Summary Post on Urea Technology Exchange (I)--------Urea Synthesis Process
Thread Content
Learning from the experiences of other regions, we have compiled together all the posts related to technical exchanges on the urea synthesis process within the nitrogen fertilizer sector; please take a look. (Click the title directly to access the hyperlink) 1. Reasons for the decrease in production despite an increased opening degree of the liquid valve in the synthesis tower: http://bbs.hcbbs.com/thread-367888-1-1.html 2. How to improve the conversion rate of the urea synthesis tower: http://bbs.hcbbs.com/thread-112834-1-1.html 3. How to enhance the conversion efficiency in urea synthesis: http://bbs.hcbbs.com/thread-382657-1-1.html 4. Equipment diagrams of the urea synthesis tower: http://bbs.hcbbs.com/thread-382964-1-1.html 5. Precautions during operation after the transformation to a full-circulation dual-high-pressure system: http://bbs.hcbbs.com/thread-380368-1-2.html 6. Problem of steam leakage from the exhaust vents of the urea synthesis tower: http://bbs.hcbbs.com/thread-369086-1-3.html 7. Which books cover the design of cyclone plates and non-traditional downcomer plates? http://bbs.hcbbs.com/thread-191823-1-3.html 8. Views on explosions in urea synthesis towers (in the context of full-circulation liquid systems): http://bbs.hcbbs.com/thread-376306-1-3.html 9. Please share your insights on corrosion and protection measures for high-pressure equipment used in urea production: http://bbs.hcbbs.com/thread-375562-1-3.html 10. Why do cracks appear at the ends of the liquid ammonia pipes in the material transfer lines? http://bbs.hcbbs.com/thread-356223-1-4.html 11. How do cracks on the back side of the urine tower lining occur, and how can they be detected? http://bbs.hcbbs.com/thread-373680-1-4.html 12. Measures to take in case of overpressure in the high-pressure coil system http://bbs.hcbbs.com/thread-192906-1-4.html 13. How to deal with crystallization inside the high-pressure washer? http://bbs.hcbbs.com/thread-295842-1-4.html 14. The size of the heat exchange area in high-pressure washers http://bbs.hcbbs.com/thread-337767-1-4.html 15. What are the reasons for frequent overheating of the liquid outlet temperature in stripping towers? (CO2 stripping method) http://bbs.hcbbs.com/thread-366667-1-4.html 16. Reasons for liquid presence in the gas exiting the high-efficiency scrubber http://bbs.hcbbs.com/thread-285445-1-4.html 17. Issues related to urea production using the CO2 stripping method, as well as matters concerning load adjustment http://bbs.hcbbs.com/thread-311969-1-4.html 18. Application of new radar level gauges in urea synthesis towers/stripping towers http://bbs.hcbbs.com/thread-124855-1-5.html 19. Structural classification of urea synthesis towers http://bbs.hcbbs.com/thread-102753-1-5.html 20. Discussions on the check valves at the bottom of urea synthesis towers http://bbs.hcbbs.com/thread-353641-1-5.html 21. Distribution of trays inside urea synthesis towers http://bbs.hcbbs.com/thread-295696-1-5.html 22. Reasons for pressure changes in urea synthesis towers http://bbs.hcbbs.com/thread-319595-1-5.html 23. The site where urea synthesis towers are lifted into place http://bbs.hcbbs.com/thread-344200-1-5.html 24. Optimal amount of O2 to add to the CO2 used as raw material in urea synthesis http://bbs.hcbbs.com/thread-367620-1-5.html 25. Methods for detecting leaks in urea synthesis towers http://bbs.hcbbs.com/thread-323257-1-6.html 26. Temperature differences in urea synthesis towers (full circulation of aqueous solutions) http://bbs.hcbbs.com/thread-330864-1-6.html 27. A near-explosion incident in a urea synthesis tower (prizes for those who provide information) http://bbs.hcbbs.com/thread-149592-1-6.html 28. Problems with piping related to CO2 stripping in urea production http://bbs.hcbbs.com/thread-288938-1-6.html 29. Improvements related to oxygen addition in urea production http://bbs.hcbbs.com/thread-350836-1-6.html 30. Methods for dealing with scaling in stripping towers? ? ? http://bbs.hcbbs.com/thread-364549-1-6.html 31. Where does stress corrosion occur mainly in the urea stripping tower? http://bbs.hcbbs.com/thread-366584-1-6.html 32. Temperature-induced passivation in high-pressure sections http://bbs.hcbbs.com/thread-317626-1-6.html 33. Summary of experiences regarding temperature-induced passivation in the 300,000-ton CO2 stripping process for urea production http://bbs.hcbbs.com/thread-124888-1-6.html 34. How to determine whether a high-pressure ammonium methanate pump is operating unstably by listening to its sound? http://bbs.hcbbs.com/thread-365309-1-6.html 35. Reasons for vibration in the pipeline at the outlet of the ammonium methanate pump and intense vibration at the inlet of the scrubber in the CO2 stripping process http://bbs.hcbbs.com/thread-365868-1-6.html 36. Temperature-induced passivation in the CO2 stripping process http://bbs.hcbbs.com/thread-343013-1-6.html 37. Information related to the control of H/C and N/C ratios in urea produced by the CO2 stripping process (under preparation) http://bbs.hcbbs.com/thread-345139-1-7.html 38. One CO2 compressor supplying two urea synthesis towers (with full water solution circulation) http://bbs.hcbbs.com/thread-364865-1-7.html 39. Issues related to the water-to-carbon ratio in the CO2 stripping process http://bbs.hcbbs.com/thread-346856-1-7.html 40. The stripping process, principles, structure, and functions of the CO2 stripping tower http://bbs.hcbbs.com/thread-361299-1-7.html 41. What is the best method for lining replacement in urea synthesis towers, according to experts? http://bbs.hcbbs.com/thread-361299-1-7.html 42. Plans for dealing with leaks in the tubes of ammonium methanate condensers or stripping towers http://bbs.hcbbs.com/thread-318700-1-7.html 43. How to handle situations where leaks cannot be detected in urea synthesis towers http://bbs.hcbbs.com/thread-261521-1-7.html 44. Discussion on the composition of the gas phase inside urea synthesis towers during shutdown periods http://bbs.hcbbs.com/thread-309859-1-7.html 45. Information regarding the start-up and shutdown of urea synthesis towers http://bbs.hcbbs.com/thread-362807-1-8.html 46. Detection of nitrogen gas during leak testing in urea synthesis towers http://bbs.hcbbs.com/thread-339611-1-8.html 47. What are the reasons behind the explosion of explosion-proof plates in high-pressure water systems? http://bbs.hcbbs.com/thread-359591-1-8.html 48. Request for instructions on the use of urea synthesis towers in aqueous solutions. http://bbs.hcbbs.com/thread-351646-1-9.html 49. How often is product discharged from a CO2 stripping unit? http://bbs.hcbbs.com/thread-230856-1-9.html 50. Imbalance in the ammonia-to-carbon ratio http://bbs.hcbbs.com/thread-283060-1-9.html 51. Locations of pressure measurement points in the high-pressure system for CO2-based urea production http://bbs.hcbbs.com/thread-307478-1-9.html 52. What standards are required for the design of urea towers? http://bbs.hcbbs.com/thread-183593-1-10.html 53. Determining high/low values of H/C and N/C in urea production using the CO2 stripping method http://bbs.hcbbs.com/thread-203931-1-10.html 54. What are the national standards regarding nickel content in the urine-like fluid at the outlet of urea synthesis towers using the full aqueous solution circulation method, ammonia stripping, or CO2 stripping methods? http://bbs.hcbbs.com/thread-98496-1-10.html 55. Conditions of use of the trays in urea towers http://bbs.hcbbs.com/thread-341896-1-10.html 56. The high-pressure system in the CO2 stripping process http://bbs.hcbbs.com/thread-292229-1-11.html 57. The shut-off valve at the outlet of the urea synthesis tower http://bbs.hcbbs.com/thread-287639-1-11.html 58. Service life of the hook bolts in urea towers http://bbs.hcbbs.com/thread-339928-1-11.html 59. Operation of urea synthesis towers (using full aqueous solution circulation) http://bbs.hcbbs.com/thread-324111-1-11.html 60. Topic 4 on the full aqueous solution circulation method: Analysis of reasons for overpressure in urea synthesis towers and corresponding treatment measures (large reward available) http://bbs.hcbbs.com/thread-310276-1-11.html 61. N/C analyzer http://bbs.hcbbs.com/thread-319601-1-11.html 62. Corrosion in urea synthesis towers http://bbs.hcbbs.com/thread-338645-1-11.html 63. Regarding high-pressure ammonium methoxide injectors http://bbs.hcbbs.com/thread-234510-1-11.html 64. Structures of liquid distributors and gas distributors in stripping towers http://bbs.hcbbs.com/thread-337500-1-11.html 65. Information on urea synthesis towers http://bbs.hcbbs.com/thread-335778-1-11.html 66. Liquid seal at the outlet of urea synthesis towers using the CO2 stripping method http://bbs.hcbbs.com/thread-329004-1-11.html 67. Gas output from the high-pressure scrubber http://bbs.hcbbs.com/thread-214460-1-11.html 68. Urea synthesis towers (using full aqueous solution circulation) http://bbs.hcbbs.com/thread-335596-1-11.html 69. Discussion on the size of urea synthesis towers and their actual production capacity http://bbs.hcbbs.com/thread-327473-1-11.html 70. Oxygen addition in urea production http://bbs.hcbbs.com/thread-186374-1-13.html 71. How to control the temperature of the liquid exiting the stripping tower http://bbs.hcbbs.com/thread-322963-1-13.html 72. Determination of the absorption pressure for gas output at 203°C in CO2-based urea production http://bbs.hcbbs.com/thread-314407-1-13.html 73. Issues related to liquid level control in stripping towers using the CO2 stripping method http://bbs.hcbbs.com/thread-312997-1-14.html 74. A collection of topics for papers on urea production http://bbs.hcbbs.com/thread-105620-1-14.html 75. Criteria for inspecting and assessing the safety of urea synthesis towers http://bbs.hcbbs.com/thread-313261-1-14.html 76. Issues related to the pressure difference before and after high-pressure ammonium methoxide injectors in the CO2 stripping method http://bbs.hcbbs.com/thread-292779-1-14.html 77. Issues related to the inlet gas temperature in urea synthesis towers using the CO2 stripping method http://bbs.hcbbs.com/thread-272426-1-14.html 78. What are the causes of corrosion in urea synthesis towers? http://bbs.hcbbs.com/thread-306125-1-15.html 79. Issues related to oxygen addition in urea extraction using CO2 http://bbs.hcbbs.com/thread-299292-1-15.html 80. How to prevent explosions in urea high-pressure washers http://bbs.hcbbs.com/thread-101308-1-15.html 81. What is the impact of the oxygen content in CO2 gas used for urea extraction on production? http://bbs.hcbbs.com/thread-300748-1-15.html 82. In the urea synthesis method using CO2 stripping, how does the CO2 stripping tower function? http://bbs.hcbbs.com/thread-302859-1-15.html 83. Reasons for the excessively high outlet temperature of the carbon dioxide urea stripping tower and solutions http://bbs.hcbbs.com/thread-302874-1-15.html 84. Brief explanation of the principle of the CO2 stripping tower http://bbs.hcbbs.com/thread-302898-1-15.html 85. Failure analysis of cracked urea towers http://bbs.hcbbs.com/thread-53564-1-16.html 86. Commissioning of carbon dioxide systems http://bbs.hcbbs.com/thread-296962-1-16.html 87. Analysis of reasons for oil contamination in the CO2 stripping tower and corresponding countermeasures http://bbs.hcbbs.com/thread-114613-1-16.html 88. Safety issues related to urea synthesis towers http://bbs.hcbbs.com/thread-195290-1-16.html 89. Information on the four key components of urea production systems http://bbs.hcbbs.com/thread-290473-1-16.html 90. The high-pressure system for CO2 stripping of urea http://bbs.hcbbs.com/thread-294256-1-17.html 91. Interlock information related to the urea production process http://bbs.hcbbs.com/thread-258199-1-17.html 92. How does the high-pressure carbon dioxide scrubber work? http://bbs.hcbbs.com/thread-237673-1-17.html 93. Is a valve installed at the outlet of the leak detection port in the urea synthesis tower? http://bbs.hcbbs.com/thread-288774-1-17.html 94. What is the structure of the urea synthesis tower and how does the material flow within it? http://bbs.hcbbs.com/thread-285409-1-18.html 95. Key operating points of urea synthesis towers in aqueous solutions and analysis of the conditions inside the towers http://bbs.hcbbs.com/thread-287934-1-18.html 96. On the operation of high-pressure injectors in the stripping process http://bbs.hcbbs.com/thread-195758-1-18.html 97. I would like to ask everyone: what medium is used for leak detection in the urea synthesis towers at your plants? http://bbs.hcbbs.com/thread-284492-1-18.html Where are the high-pressure injectors used for the stripping of urea with 980,000 and 300,000 tons of carbon dioxide produced? http://bbs.hcbbs.com/thread-142887-1-18.html 99. Overpressure protection in the urea synthesis tower http://bbs.hcbbs.com/thread-280584-1-19.html 100. Control of oxygen addition amount http://bbs.hcbbs.com/thread-278440-1-19.html This post was last edited by lxq700918 on 2009-2-7 23:27 ]
Continued: 101. Full-circulation aqueous solution method for urea synthesis towers http://bbs.hcbbs.com/thread-248376-1-20.html 102. How to adjust the top and bottom temperatures of urea synthesis towers? http://bbs.hcbbs.com/thread-192952-1-20.html 103. High nickel content in the liquid obtained through gas lift http://bbs.hcbbs.com/thread-269838-1-20.html 104. Fees for inspecting urea synthesis towers in different regions http://bbs.hcbbs.com/thread-255634-1-22.html 105. Discussion on regular inspections of urea synthesis towers http://bbs.hcbbs.com/thread-234439-1-22.html 106. Procedures for tightening bolts on high-pressure equipment in urea synthesis towers http://bbs.hcbbs.com/thread-255614-1-22.html 107. Issues related to starting up urea synthesis towers http://bbs.hcbbs.com/thread-244255-1-22.html 108. What measures can be taken to prevent corrosion of the four high-pressure devices in the carbon dioxide gas lift unit? http://bbs.hcbbs.com/thread-230554-1-23.html 109. Temperature control of water in the carbon dioxide stripping process for urea production http://bbs.hcbbs.com/thread-240145-1-23.html 110. Is oxygen-enriched or pure oxygen used in the air used for preventing corrosion of urea? http://bbs.hcbbs.com/thread-247986-1-23.html 111. Issues regarding dehydrogenation in urea! http://bbs.hcbbs.com/thread-228921-1-23.html 112. Is the interior of the full-circulation aqueous solution urea synthesis tower empty? http://bbs.hcbbs.com/thread-187177-1-24.html 113. Comparison between the full-circulation aqueous solution method and the CO2 stripping method http://bbs.hcbbs.com/thread-191894-1-24.html 114. How to optimize the process in urea production using the CO2 stripping method? http://bbs.hcbbs.com/thread-233877-1-24.html 115. Selection of level gauges for the bottom liquid in the stripping tower http://bbs.hcbbs.com/thread-238240-1-24.html 116. Corrosion prevention issues in urea synthesis towers http://bbs.hcbbs.com/thread-206450-1-25.html 117. Investigation into the production capacity and key equipment specifications of the CO2 stripping process! http://bbs.hcbbs.com/thread-230397-1-25.html 118. What are the reasons for the excessive temperature of the liquid outlet from the carbon dioxide stripping tower in the urea plant, and how should it be addressed? http://bbs.hcbbs.com/thread-137240-1-25.html 119. [Reward Offered] How to modify the high-pressure section using the full-circulation aqueous solution method? http://bbs.hcbbs.com/thread-191431-1-25.html 120. Does the concentration of monomethyl liquid affect the temperature in the synthesis tower? http://bbs.hcbbs.com/thread-205964-1-26.html 121. Why are the temperatures at the top and bottom of the synthesis tower adjusted in this way? (Reward for replies) http://bbs.hcbbs.com/thread-202525-1-26.html 122. New insights into explosions in urea synthesis towers http://bbs.hcbbs.com/thread-215108-1-26.html 123. Reasons for the sudden drop in the outlet temperature of the high-efficiency scrubber http://bbs.hcbbs.com/thread-177025-1-26.html 124. Why does the liquid coming out of the gas tower at low conversion rates have an elevated temperature? http://bbs.hcbbs.com/thread-117445-1-26.html 125. Is the interior of the urea synthesis tower hollow? http://bbs.hcbbs.com/thread-188046-1-26.html 126. Could you help me identify the names of several components in the CADA diagram of this urea synthesis tower? http://bbs.hcbbs.com/thread-208593-1-26.html 127. Where can I find foreign-language materials related to urea synthesis towers? http://bbs.hcbbs.com/thread-210574-1-26.html 128. Measures to improve the purity of CO2 in the raw gas used for urea synthesis http://bbs.hcbbs.com/thread-208853-1-27.html 129. What components are found inside a urea synthesis tower? http://bbs.hcbbs.com/thread-193376-1-27.html 130. Information related to urea synthesis towers http://bbs.hcbbs.com/thread-185382-1-28.html 131. Issues related to ammonia leakage in high-pressure equipment such as urea synthesis towers http://bbs.hcbbs.com/thread-122241-1-28.html 132. Is insulation material also used around the base of the urea synthesis tower? What is the full name of the “Huasiyuan General Design”? http://bbs.hcbbs.com/thread-195914-1-28.html 133. How long does urea stay inside the tower during synthesis? http://bbs.hcbbs.com/thread-188074-1-28.html 134. What is the opening degree of the outlet valve of the high-efficiency scrubber in the carbon dioxide stripping process? http://bbs.hcbbs.com/thread-129420-1-28.html 135. Is there an insulation layer outside the urea synthesis tower? http://bbs.hcbbs.com/thread-191839-1-28.html 136. Maintenance of the urea synthesis tower http://bbs.hcbbs.com/thread-182803-1-29.html 137. How is the temperature distributed across the layers of the urea synthesis tower when those layers are covered with insulation? http://bbs.hcbbs.com/thread-192689-1-29.html 138. Is there a standard to follow for determining the spacing between the layers in a urea synthesis tower? http://bbs.hcbbs.com/thread-191154-1-29.html 139. How to deal with blockages in high-pressure pipeline systems? http://bbs.hcbbs.com/thread-176898-1-29.html 140. The equilibrium in the urea synthesis process http://bbs.hcbbs.com/thread-174903-1-29.html 141. Leak detection in urea synthesis towers http://bbs.hcbbs.com/thread-183256-1-29.html 142. Does anyone have the piping diagram for the high-pressure urea production system using the CO2 stripping method? http://bbs.hcbbs.com/thread-143299-1-31.html 143. Request for help~~~ Analysis of the causes of scaling in urea ammonia stripping towers http://bbs.hcbbs.com/thread-147265-1-32.html 144. Service life of urea synthesis towers http://bbs.hcbbs.com/thread-66706-1-32.html 145. Elevation requirements for high-pressure equipment used in urea CO2 stripping processes http://bbs.hcbbs.com/thread-143266-1-32.html 146. How many types of urea towers are there?? http://bbs.hcbbs.com/thread-139033-1-32.html 147. Selection of the surface quality of heat exchange tubes in high-pressure ammonium methoxide condensers used in CO2 stripping units http://bbs.hcbbs.com/thread-139217-1-32.html 148. Could anyone provide me with information related to urea synthesis towers? ! http://bbs.hcbbs.com/thread-138618-1-32.html 149. What are the lining materials for urea synthesis towers? http://bbs.hcbbs.com/thread-91535-1-32.html 150. When should methylamine solution be added after a short shutdown in urea production using the full-circulation aqueous solution method? http://bbs.hcbbs.com/thread-134242-1-32.html 151. Seeking information on the anti-corrosion and insulation requirements for urea granulation towers. http://bbs.hcbbs.com/thread-130740-1-33.html 152. How should the low-pressure startup process be carried out in the CO2 stripping method, and what issues need to be considered? http://bbs.hcbbs.com/thread-126450-1-33.html 153. Issues related to the time required to seal a urea tower; please provide detailed information!!!! http://bbs.hcbbs.com/thread-105176-1-33.html 154. Please share information on pressure relief during the shutdown of urea synthesis towers. http://bbs.hcbbs.com/thread-107097-1-33.html 155. Under what conditions does the temperature difference between the liquid and gas exiting the high-pressure condenser decrease? http://bbs.hcbbs.com/thread-122524-1-33.html 156. The temperature of the liquid exiting the high-pressure washer. http://bbs.hcbbs.com/thread-119278-1-33.html 157. Questions regarding the selection of heat exchange tubes for high-pressure heat exchange equipment in CO2 stripping urea production plants. http://bbs.hcbbs.com/thread-120961-1-33.html 158. Operating temperatures in the CO2 stripping method. http://bbs.hcbbs.com/thread-107400-1-34.html 159. Can anyone provide information on nitrogen leak detection for synthesis towers? http://bbs.hcbbs.com/thread-115539-1-34.html 160. Why is an excess of ammonia used in the urea synthesis reaction? http://bbs.hcbbs.com/thread-113341-1-34.html 161. What changes occur when the ratio of H2O to CO2 increases in urea production? http://bbs.hcbbs.com/thread-112823-1-34.html 162. How can we determine whether the ratios of NH3/CO2 and H2O/CO2 are appropriate in urea production? http://bbs.hcbbs.com/thread-112831-1-34.html 163. Does anyone have information on the operation of Hainan Fudao high-pressure pool-type condensers? http://bbs.hcbbs.com/thread-105169-1-34.html 164. What is the minimum load at which the carbon dioxide stripping method can operate? http://bbs.hcbbs.com/thread-103912-1-35.html 165. Issues related to temperature-induced passivation in high-pressure systems. http://bbs.hcbbs.com/thread-101386-1-35.html 166. Issues related to limiting ferrite in welds of urea equipment and pipes (316L mod). http://bbs.hcbbs.com/thread-101707-1-35.html 167. Leak detection in stripping towers. http://bbs.hcbbs.com/thread-72317-1-36.html 168. Protecting synthesis towers. http://bbs.hcbbs.com/thread-368219-1-37.html 169. Correct parameters for the empirical formula relating to CO2 equilibrium conversion rate. http://bbs.hcbbs.com/thread-364354-1-38.html Posts as of February 6, 2009; all have been compiled now. Please check them out.
1 How to improve the conversion rate of urea synthesis towers 1 2 Nitrogen fertilizer process technology discussion forum guaotian 2007-11-29 29 / 10472009-2-7 00:23 by cb2008 2 Parallel operation of urea synthesis towers Nitrogen fertilizer process technology discussion forum Pei Yuming 2009-2-6 2 / 392009-2-6 18:05 by Durian 3 Equipment diagrams of urea synthesis towers Nitrogen fertilizer process technology discussion forum jindin312 2009-2-5 4 / 862009-2-6 12:14 by Panzhou Wuhu 4 Problem of steam leakage from the exhaust vents of urea synthesis towers Nitrogen fertilizer process technology discussion forum Canghai Yisi Zi 2009-1-9 9 / 2102009-2-6 11:42 by gongyeqing 5 Level measurement in urea synthesis towers and stripping towers Nitrogen fertilizer process technology discussion forum Zhou Ding Shengs 2008-5-28 3 / 2542009-2-6 11:37 by Jamy 6 Reasons for the phenomenon where increasing the opening degree of the liquid level valve in the synthesis tower results in a decrease in production Nitrogen fertilizer process technology discussion forum Durian 2009-1-8 8 / 1602009-2-6 10:45 by luomadadi116 7 What is the manufacturing process for urea synthesis towers? You tell me! Nitrogen Fertilizer Process Technology Exchange Area zhang*aobin 2009-1-7 1 / 712009-1-30 14:50 by lxq700918 8 Views on the explosion of urea synthesis towers (full aqueous solution circulation) Nitrogen Fertilizer Process Technology Exchange Area liujie 2009-1-20 2 / 962009-1-30 14:40 by lxq700918 9 Application of new radar level gauges in urea synthesis towers/strippers Nitrogen Fertilizer Process Technology Exchange Area zhanghua 2007-12-20 13 / 7362009-1-17 21:15 by lxq700918 10 Structural classification of urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area Safety Officer 2007-11-7 4 / 5842009-1-16 14:18 by Suifeng Qianru 11 Distribution of trays inside urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area wjrchina 2008-10-21 9 / 3882009-1-16 14:14 by Suifeng Qianru 12 Reasons for pressure changes in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area wuguangju 2008-11-14 22 / 6522009-1-14 20:14 by nmzhb 13 Lifting site of urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area Canghai Yisu Zi 2008-12-11 7 / 2562009-1-14 16:03 by prendent 14 Problems with using a single machine or pump to supply two urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area aluo169 2008-6-5 15 / 8902009-1-13 09:32 by cb2008 15 Methods for detecting leaks in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area wuguangju 2008-11-19 8 / 3142009-1-11 15:38 by Xiangle Mengle 16 Temperature difference in urea synthesis towers (full aqueous solution circulation) Nitrogen Fertilizer Process Technology Exchange Area wuguangju 2008-11-27 3 / 2162009-1-11 14:49 by sdyfc 17 Urea synthesis tower nearly exploded (prize for participants) 1 2 3 4 Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-2-1 86 / 29832009-1-11 14:41 by 100002 18 Let’s share the conversion rates of various process synthesis towers Nitrogen Fertilizer Process Technology Exchange Area Suifeng Qianru 2009-1-7 2 / 872009-1-8 12:22 by 1025199692 19 One CO2 compressor supplying two urea synthesis towers (full aqueous solution circulation) Nitrogen Fertilizer Process Technology Exchange Area wuguangju 2009-1-4 8 / 1582009-1-7 09:04 by cj1 20 Experts, what is the best method for lining replacement in urea synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area Suifeng Qianru 2008-12-30 7 / 1822009-1-4 12:35 by Suifeng Qianru 21 How to handle cases where leak detection in urea synthesis towers fails Nitrogen Fertilizer Process Technology Exchange Area mmzzff 2008-9-4 19 / 5652009-1-2 22:05 by Damo Guying yjx 22 Discussion on the composition of the gas phase space during shutdown of urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area wuguangju 2008-11-4 1 / 2102009-1-2 15:22 by ty0ty00 23 On starting and stopping urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area ty0ty00 2009-1-1 4 / 1132009-1-2 14:48 by dxbao 24 Detection of nitrogen gas during leak testing in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area lxq700918 2008-12-5 14 / 3442009-1-2 07:35 by Diao Ying Kuang Dao 25 Does anyone have SHS 05026-2004 “Maintenance and Repair Procedures for Urea Synthesis Towers Using Full Aqueous Solution Circulation”? Discussion Area for Nitrogen Fertilizer Process Technologies
cuizhu2005, 2008-12-22, 4 / 170
2008-12-29, 11:10 by cuizhu2005
26 Request for help: User manual for the aqueous urea synthesis tower
Discussion Area for Nitrogen Fertilizer Process Technologies
cuizhu2005, 2008-12-18, 1 / 88
2008-12-18, 14:01 by wxf3379
27 Issues related to ammonia synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
quanquan3306, 2008-12-11, 0 / 77
2008-12-11, 12:49 by quanquan3306
28 Full aqueous solution recycling method and ammonia stripping/CO2 stripping. What is the national standard for nickel content in the urea solution exiting the urea synthesis tower?
Discussion Area for Nitrogen Fertilizer Process Technologies
chengfr, 2007-10-25, 13 / 621
2008-12-10, 08:48 by sdyfc
29 Stop valve at the outlet of the urea synthesis tower
Discussion Area for Nitrogen Fertilizer Process Technologies
gfktxl, 2008-10-12, 19 / 526
2008-12-7, 22:42 by mol100
30 Operation of urea synthesis towers (full aqueous solution recycling method)
Discussion Area for Nitrogen Fertilizer Process Technologies
wuguangju, 2008-11-19, 5 / 245
2008-12-6, 23:33 by Wandering Across Lakes
30 Special topic on the full aqueous solution recycling method: Cause analysis and countermeasures for overpressure in urea synthesis towers (generous rewards offered)
Discussion Area for Nitrogen Fertilizer Process Technologies
jindin312, 2008-11-5, 5 / 256
2008-12-6, 11:00 by qiwu9981
32 Corrosion in urea synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
guohui2008, 2008-12-4, 1 / 179
2008-12-5, 09:03 by lxq700918
33 Regarding urea synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
bruceshen113, 2008-12-2, 6 / 202
2008-12-4, 15:24 by bruceshen113
34 Liquid seal at the outlet of CO2 stripping synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
stamic, 2008-11-25, 9 / 262
2008-12-3, 21:19 by mol100
35 Urea synthesis towers (full aqueous solution recycling method)
Discussion Area for Nitrogen Fertilizer Process Technologies
wuguangju, 2008-12-2, 4 / 159
2008-12-2, 18:16 by Pastoral Poet
36 Discussion on the size and actual production capacity of urea synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
wwwppm, 2008-11-23, 9 / 336
2008-12-2, 16:01 by cthlj2007
37 Basis for inspection and safety assessment of urea synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
wischen, 2008-11-8, 2 / 257
2008-11-8, 09:27 by zhangxanfu
38 What are the causes of corrosion in urea synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area wjrchina 2008-10-31 13 / 311 2008-11-4 08:13 by msj279 39 Safety issues related to urea synthesis towers 1 2 Nitrogen Fertilizer Process Technology Exchange Area 9oveyou 2008-4-25 28 / 1030 2008-10-23 23:33 by Dongfang Huazhu Should a valve be installed at the outlet of the leak detection port of a urea synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-10-14 6 / 2492008-10-16 23:29 by jetlee_78 What is the structure of the urea synthesis tower and how does the material flow within it? Nitrogen Fertilizer Process Technology Exchange Area sdyfc 2008-10-9 6 / 3232008-10-14 09:04 by Jin Douzi Er 42 Key points for operating urea synthesis towers using aqueous solutions and analysis of the conditions inside the towers Nitrogen Fertilizer Process Technology Exchange Area sdyfc 2008-10-13 1 / 2132008-10-13 22:51 by Liuluojun 43 How to prevent the internal components of synthesis towers from being crushed during startup and shutdown, and how to protect those components? Nitrogen Fertilizer Process Technology Discussion Area ggusers 2008-10-11 2 / 1542008-10-11 18:44 by ggusers 44 I would like to ask everyone: what medium is used for leak detection in the urea synthesis towers at your plants? Nitrogen Fertilizer Process Technology Exchange Area xlxlgw 2008-10-8 10 / 1982008-10-10 09:11 by Zhang Zhiyuan 45 Overpressure protection for urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area LZ Gas Station 2008-10-1 9 / 2612008-10-5 21:54 by ty0ty00 46 Seeking advice on temperature issues in synthesis towers Nitrogen Fertilizer Process Technology Exchange Area quanquan3306 2008-10-4 1 / 1832008-10-5 08:15 by gfktxl 47 Synthesis towers Nitrogen Fertilizer Process Technology Exchange Area yuzhou 2008-9-27 3 / 2042008-9-28 17:24 by Chen (Old account; this account is not to be used) 48 Urea synthesis tower using full water solution circulation Nitrogen Fertilizer Process Technology Exchange Area Mingquan 2008-8-14 3 / 2492008-9-23 21:20 by liubing138 49 How to adjust the top and bottom temperatures of a urea synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-4-22 12 / 7372008-9-22 19:53 by chengfr 50 Costs associated with inspections of synthesis towers across different regions Nitrogen Fertilizer Process Technology Exchange Area ZHANG487 2008-8-27 0 / 1432008-8-27 16:45 by ZHANG487 51 Discussion on regular inspections of urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area jindin312 2008-7-14 6 / 3092008-8-27 16:40 by ZHANG487 52 Issues related to starting up urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area xxjjcc 2008-8-5 19 / 4802008-8-22 06:00 by zhanghua 53 Is the inside of a urea synthesis tower using full water solution circulation empty? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-4-13 5 / 2312008-7-29 13:39 by cnoockb 54 Corrosion prevention in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area wwq 2008-5-15 4 / 3952008-7-10 17:31 by Process Engineering 55 Does the concentration of Methylamine Affect the temperature of the synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-5-14 7 / 5422008-6-12 11:52 by yunliyu 56 Why are the top and bottom temperatures of a synthesis tower adjusted in this way? (Reward for reply) Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-5-8 6 / 7192008-6-7 10:25 by qbbbxt 57 New insights into explosions in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area lcs000212 2008-6-3 0 / 2472008-6-3 10:31 by lcs000212 58 Is the inside of a urea synthesis tower empty? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-4-15 9 / 4142008-5-29 13:48 by Anti-Japanese War 20 Years 59 Could you help me identify the names of several components in the CADA diagram of this urea synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-5-20 3 / 3872008-5-26 10:57 by xhhym 60 Where can I find foreign-language materials related to urea synthesis towers? Nitrogen Fertilizer Process Technology Discussion Forum WZTII 2008-5-24 0 / 1472008-5-24 03:35 by WZTII 61 Does anyone have diagrams of the synthesis tower? (For the Kellogg process.) Nitrogen Fertilizer Process Technology Discussion Forum zuiaiqin17 2008-5-23 0 / 1532008-5-23 17:49 by zuiaiqin17 62 What components are inside a urea synthesis tower? Nitrogen Fertilizer Process Technology Discussion Forum WZTII 2008-4-22 9 / 4452008-5-12 16:58 by aluo169 63 Topics related to the urea synthesis tower Nitrogen Fertilizer Process Technology Discussion Forum wwt19850427 2008-4-11 15 / 6962008-5-9 20:10 by wwt19850427 64 Issues regarding ammonia leakage in high-pressure equipment such as urea synthesis towers Nitrogen Fertilizer Process Technology Discussion Forum ldingyou 2007-12-15 7 / 4202008-5-8 08:39 by ck0285730 65 Is insulation material also used around the skirt portion of the urea synthesis tower? What is the full name of the “Huasi Fourth Research Institute Standard Design”? Nitrogen Fertilizer Process Technology Discussion Forum WZTII 2008-4-27 2 / 2362008-4-29 20:03 by cj1 66 Is there an insulation layer on the outside of the urea synthesis tower? Nitrogen Fertilizer Process Technology Discussion Forum WZTII 2008-4-20 7 / 2292008-4-22 11:32 by ymleng 67 Maintenance of the urea synthesis tower Nitrogen Fertilizer Process Technology Discussion Forum ty0ty00 2008-4-7 12 / 3192008-4-22 11:32 by ldingyou 68 Is there a standard to follow when determining the spacing between the trays in a urea synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-4-19 1 / 1732008-4-19 12:04 by htnyf 69 Leak detection in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area 20 years of resistance 2008-4-8 3 / 3422008-4-9 02:19 by zhanghua 70 Service life of urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area fwd8197266 2007-7-28 14 / 56112008-1-24 15:16 by wycasia 71 What keywords should be used online when designing urea synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-1-12 0 / 2012008-1-12 10:35 by WZTII 72 Can anyone provide me with information related to urea synthesis towers? ! Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-1-11 3 / 2592008-1-11 23:22 by WZTII 73 Liner materials for urea synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area xjs740 2007-9-26 13 / 28362008-1-4 19:51 by zhujun7903 74 Internal layout of synthesis towers Nitrogen Fertilizer Process Technology Exchange Area asdf1934 2007-12-27 7 / 3762007-12-29 15:15 by mydeng 75 Let’s discuss the pressure relief process when shutting down urea aqueous solution synthesis towers Nitrogen Fertilizer Process Technology Exchange Area nwm321759 2007-11-17 1 / 2282007-12-20 22:39 by ty0ty00 76 Information on synthesis towers used in chemical plants across the country Nitrogen Fertilizer Process Technology Exchange Area ckx8966 2007-12-5 3 / 2692007-12-5 17:35 by wxf3379 77 Can anyone provide information on nitrogen leak detection for synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area titicaca2006 2007-12-4 0 / 1672007-12-4 13:27 by titicaca2006 78 Protecting synthesis towers Nitrogen Fertilizer Process Technology Exchange Area 1025199692 2009-1-8 1 / 772007-2-3 23:04 by A rabbit that wanders around 79 Which book contains information on the calculation of process dimensions for urea synthesis towers??? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-4-20 2 / 2662007-2-3 18:11 by lxq700918
cuizhu2005, 2008-12-22, 4 / 170
2008-12-29, 11:10 by cuizhu2005
26 Request for help: User manual for the aqueous urea synthesis tower
Discussion Area for Nitrogen Fertilizer Process Technologies
cuizhu2005, 2008-12-18, 1 / 88
2008-12-18, 14:01 by wxf3379
27 Issues related to ammonia synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
quanquan3306, 2008-12-11, 0 / 77
2008-12-11, 12:49 by quanquan3306
28 Full aqueous solution recycling method and ammonia stripping/CO2 stripping. What is the national standard for nickel content in the urea solution exiting the urea synthesis tower?
Discussion Area for Nitrogen Fertilizer Process Technologies
chengfr, 2007-10-25, 13 / 621
2008-12-10, 08:48 by sdyfc
29 Stop valve at the outlet of the urea synthesis tower
Discussion Area for Nitrogen Fertilizer Process Technologies
gfktxl, 2008-10-12, 19 / 526
2008-12-7, 22:42 by mol100
30 Operation of urea synthesis towers (full aqueous solution recycling method)
Discussion Area for Nitrogen Fertilizer Process Technologies
wuguangju, 2008-11-19, 5 / 245
2008-12-6, 23:33 by Wandering Across Lakes
30 Special topic on the full aqueous solution recycling method: Cause analysis and countermeasures for overpressure in urea synthesis towers (generous rewards offered)
Discussion Area for Nitrogen Fertilizer Process Technologies
jindin312, 2008-11-5, 5 / 256
2008-12-6, 11:00 by qiwu9981
32 Corrosion in urea synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
guohui2008, 2008-12-4, 1 / 179
2008-12-5, 09:03 by lxq700918
33 Regarding urea synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
bruceshen113, 2008-12-2, 6 / 202
2008-12-4, 15:24 by bruceshen113
34 Liquid seal at the outlet of CO2 stripping synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
stamic, 2008-11-25, 9 / 262
2008-12-3, 21:19 by mol100
35 Urea synthesis towers (full aqueous solution recycling method)
Discussion Area for Nitrogen Fertilizer Process Technologies
wuguangju, 2008-12-2, 4 / 159
2008-12-2, 18:16 by Pastoral Poet
36 Discussion on the size and actual production capacity of urea synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
wwwppm, 2008-11-23, 9 / 336
2008-12-2, 16:01 by cthlj2007
37 Basis for inspection and safety assessment of urea synthesis towers
Discussion Area for Nitrogen Fertilizer Process Technologies
wischen, 2008-11-8, 2 / 257
2008-11-8, 09:27 by zhangxanfu
38 What are the causes of corrosion in urea synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area wjrchina 2008-10-31 13 / 311 2008-11-4 08:13 by msj279 39 Safety issues related to urea synthesis towers 1 2 Nitrogen Fertilizer Process Technology Exchange Area 9oveyou 2008-4-25 28 / 1030 2008-10-23 23:33 by Dongfang Huazhu Should a valve be installed at the outlet of the leak detection port of a urea synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-10-14 6 / 2492008-10-16 23:29 by jetlee_78 What is the structure of the urea synthesis tower and how does the material flow within it? Nitrogen Fertilizer Process Technology Exchange Area sdyfc 2008-10-9 6 / 3232008-10-14 09:04 by Jin Douzi Er 42 Key points for operating urea synthesis towers using aqueous solutions and analysis of the conditions inside the towers Nitrogen Fertilizer Process Technology Exchange Area sdyfc 2008-10-13 1 / 2132008-10-13 22:51 by Liuluojun 43 How to prevent the internal components of synthesis towers from being crushed during startup and shutdown, and how to protect those components? Nitrogen Fertilizer Process Technology Discussion Area ggusers 2008-10-11 2 / 1542008-10-11 18:44 by ggusers 44 I would like to ask everyone: what medium is used for leak detection in the urea synthesis towers at your plants? Nitrogen Fertilizer Process Technology Exchange Area xlxlgw 2008-10-8 10 / 1982008-10-10 09:11 by Zhang Zhiyuan 45 Overpressure protection for urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area LZ Gas Station 2008-10-1 9 / 2612008-10-5 21:54 by ty0ty00 46 Seeking advice on temperature issues in synthesis towers Nitrogen Fertilizer Process Technology Exchange Area quanquan3306 2008-10-4 1 / 1832008-10-5 08:15 by gfktxl 47 Synthesis towers Nitrogen Fertilizer Process Technology Exchange Area yuzhou 2008-9-27 3 / 2042008-9-28 17:24 by Chen (Old account; this account is not to be used) 48 Urea synthesis tower using full water solution circulation Nitrogen Fertilizer Process Technology Exchange Area Mingquan 2008-8-14 3 / 2492008-9-23 21:20 by liubing138 49 How to adjust the top and bottom temperatures of a urea synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-4-22 12 / 7372008-9-22 19:53 by chengfr 50 Costs associated with inspections of synthesis towers across different regions Nitrogen Fertilizer Process Technology Exchange Area ZHANG487 2008-8-27 0 / 1432008-8-27 16:45 by ZHANG487 51 Discussion on regular inspections of urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area jindin312 2008-7-14 6 / 3092008-8-27 16:40 by ZHANG487 52 Issues related to starting up urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area xxjjcc 2008-8-5 19 / 4802008-8-22 06:00 by zhanghua 53 Is the inside of a urea synthesis tower using full water solution circulation empty? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-4-13 5 / 2312008-7-29 13:39 by cnoockb 54 Corrosion prevention in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area wwq 2008-5-15 4 / 3952008-7-10 17:31 by Process Engineering 55 Does the concentration of Methylamine Affect the temperature of the synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-5-14 7 / 5422008-6-12 11:52 by yunliyu 56 Why are the top and bottom temperatures of a synthesis tower adjusted in this way? (Reward for reply) Nitrogen Fertilizer Process Technology Exchange Area qiwu9981 2008-5-8 6 / 7192008-6-7 10:25 by qbbbxt 57 New insights into explosions in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area lcs000212 2008-6-3 0 / 2472008-6-3 10:31 by lcs000212 58 Is the inside of a urea synthesis tower empty? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-4-15 9 / 4142008-5-29 13:48 by Anti-Japanese War 20 Years 59 Could you help me identify the names of several components in the CADA diagram of this urea synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-5-20 3 / 3872008-5-26 10:57 by xhhym 60 Where can I find foreign-language materials related to urea synthesis towers? Nitrogen Fertilizer Process Technology Discussion Forum WZTII 2008-5-24 0 / 1472008-5-24 03:35 by WZTII 61 Does anyone have diagrams of the synthesis tower? (For the Kellogg process.) Nitrogen Fertilizer Process Technology Discussion Forum zuiaiqin17 2008-5-23 0 / 1532008-5-23 17:49 by zuiaiqin17 62 What components are inside a urea synthesis tower? Nitrogen Fertilizer Process Technology Discussion Forum WZTII 2008-4-22 9 / 4452008-5-12 16:58 by aluo169 63 Topics related to the urea synthesis tower Nitrogen Fertilizer Process Technology Discussion Forum wwt19850427 2008-4-11 15 / 6962008-5-9 20:10 by wwt19850427 64 Issues regarding ammonia leakage in high-pressure equipment such as urea synthesis towers Nitrogen Fertilizer Process Technology Discussion Forum ldingyou 2007-12-15 7 / 4202008-5-8 08:39 by ck0285730 65 Is insulation material also used around the skirt portion of the urea synthesis tower? What is the full name of the “Huasi Fourth Research Institute Standard Design”? Nitrogen Fertilizer Process Technology Discussion Forum WZTII 2008-4-27 2 / 2362008-4-29 20:03 by cj1 66 Is there an insulation layer on the outside of the urea synthesis tower? Nitrogen Fertilizer Process Technology Discussion Forum WZTII 2008-4-20 7 / 2292008-4-22 11:32 by ymleng 67 Maintenance of the urea synthesis tower Nitrogen Fertilizer Process Technology Discussion Forum ty0ty00 2008-4-7 12 / 3192008-4-22 11:32 by ldingyou 68 Is there a standard to follow when determining the spacing between the trays in a urea synthesis tower? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-4-19 1 / 1732008-4-19 12:04 by htnyf 69 Leak detection in urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area 20 years of resistance 2008-4-8 3 / 3422008-4-9 02:19 by zhanghua 70 Service life of urea synthesis towers Nitrogen Fertilizer Process Technology Exchange Area fwd8197266 2007-7-28 14 / 56112008-1-24 15:16 by wycasia 71 What keywords should be used online when designing urea synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-1-12 0 / 2012008-1-12 10:35 by WZTII 72 Can anyone provide me with information related to urea synthesis towers? ! Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-1-11 3 / 2592008-1-11 23:22 by WZTII 73 Liner materials for urea synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area xjs740 2007-9-26 13 / 28362008-1-4 19:51 by zhujun7903 74 Internal layout of synthesis towers Nitrogen Fertilizer Process Technology Exchange Area asdf1934 2007-12-27 7 / 3762007-12-29 15:15 by mydeng 75 Let’s discuss the pressure relief process when shutting down urea aqueous solution synthesis towers Nitrogen Fertilizer Process Technology Exchange Area nwm321759 2007-11-17 1 / 2282007-12-20 22:39 by ty0ty00 76 Information on synthesis towers used in chemical plants across the country Nitrogen Fertilizer Process Technology Exchange Area ckx8966 2007-12-5 3 / 2692007-12-5 17:35 by wxf3379 77 Can anyone provide information on nitrogen leak detection for synthesis towers? Nitrogen Fertilizer Process Technology Exchange Area titicaca2006 2007-12-4 0 / 1672007-12-4 13:27 by titicaca2006 78 Protecting synthesis towers Nitrogen Fertilizer Process Technology Exchange Area 1025199692 2009-1-8 1 / 772007-2-3 23:04 by A rabbit that wanders around 79 Which book contains information on the calculation of process dimensions for urea synthesis towers??? Nitrogen Fertilizer Process Technology Exchange Area WZTII 2008-4-20 2 / 2662007-2-3 18:11 by lxq700918
1 Title section: Author’s reply/View last post 2 The vent volume of the high-pressure washer is high; experts are requested to help analyze this issue. Nitrogen fertilizer process technology discussion forum, lml8203, 2009-3-4. 12 / 18. 2009-3-13 10:20, posted by cj13. Application of the full-circulation water solution method in high-pressure systems. Nitrogen fertilizer process technology discussion forum, cuiwk, 2009-3-12. 3 / 49. 2009-3-13 09:11, posted by lxq7009184. If the “O” ring of a high-pressure injector is damaged, what problems will occur in the high-pressure system? (CO2 stripping) Nitrogen fertilizer process technology discussion forum lxq700918 2009-2-146 / 201209-3-11 14:03 by Fan Zhou Wu Hu5 Problems with backflow caused by high-pressure ammonia pumps Nitrogen fertilizer process technology discussion forum ck0285730 2008-12-3021 / 398209-3-11 08:28 by msj2796 What is the purpose of washing and recovering the exhaust gas from the high-pressure urea synthesis process in two steps using CO2 stripping? Nitrogen Fertilizer Process Technology Discussion Forum lxq700918 2009-2-23 1/712 2009-3-10 21:56 by *aohong307: The bolts at the liquid inlet end of the urea high-pressure methanol pump’s check valve often break; please advise, experts. Nitrogen Fertilizer Process Technology Discussion Forum lyqbb 2009-3-34/972 2009-3-10 21:41 by 10251996928: Analysis of the advantages and disadvantages of using high-pressure liquid ammonia heaters. Nitrogen Fertilizer Process Technology Discussion Forum lxq700918 2009-2-27 3/99 2009-3-3 14:03 by liao12837. Last edited by Fan Zhou Wu Hu on 2009-3-13 23:30.]
Haha! I managed to do it on a small scale! Give myself a like:victory: :victory: :victory: The last edit of this post was made by Fan Zhou Wu Hu on 2009-3-13 at 23:42.]
There are so many. Save them for now and check them later