English — Forum #647 (Page 11/34)

1. Regarding the leakage issue of the manual control valve (cold valve) in the air separation distillation column - HCBBS Forum
2. [Discussion Thread 52] Methods to Prevent Deformation During the Transportation of Tower Containers - HCBBS Forum
3. Is there hydrogen sulfide in the overhead gas of the depentanizer in a continuous reforming unit? - HCBBS Forum
4. How to address high resistance in the final cooling tower - HCBBS Forum
5. The sulfide content in the water purified by the stripping tower is not up to standard - HCBBS Forum
6. The problem of large openings in circular towers - HCBBS Forum
7. Determine the appropriate reflux ratio for the distillation column - HCBBS Forum
8. Desulfurization tower adjustment - HCBBS Forum
9. Is the chilled water level in the middle of the air-cooled tower related to the tower’s resistance? - HCBBS Forum
10. HCL absorption tower simulation problem - HCBBS Forum
11. What is the effect of lowering the position of the reflux line on the distillation column? - HCBBS Forum
12. Question: With a drop in column pressure, how does the top temperature change? What if the tower pressure rises? - HCBBS Forum
13. Chlorine measurement at the exhaust outlet of the waste gas scrubber in the vinyl chloride plant - HCBBS Forum
14. Five steps for the maintenance of cooling towers and chiller units - HCBBS Forum
15. What is the principle behind the liquid accumulation tank in the middle of a distillation tower? Will it become empty if I pull it out from the middle? - HCBBS Forum
16. Maintenance plan for benzene removal tower - HCBBS Forum
17. Hydraulical calculation software for the adjacent tower? - HCBBS Forum
18. The benzene washing towers are connected in series, making it difficult to control the temperature of the gas exiting these towers - HCBBS Forum
19. The temperature at the top of the stabilizer is high! ! ! - HCBBS Forum
20. Causes of wall perforation in flue gas desulfurization quench towers - HCBBS Forum
21. How to deal with the large amount of sediment at the bottom of the desulfurization tower - HCBBS Forum
22. Renovation of gas desulfurization tower - HCBBS Forum
23. Cooling tower noise control and reduction - HCBBS Forum
24. Design of methyl acrylate distillation tower - HCBBS Forum
25. Operation of Weihua Group’s urea granulation tower dust control project commenced - HCBBS Forum
26. Why is the temperature in the upper tower lower than that in the lower tower? Is it the function of the liquid from the lower column to act on the throttle valve in the upper column? - HCBBS Forum
27. What is the minimum bottom temperature in the naphtha deoxygenation column in degrees Celsius? - HCBBS Forum
28. Issues regarding the design calculations for tower-type containers - HCBBS Forum
29. Seeking assistance with online acid cleaning of air-cooled towers and water-cooled towers - HCBBS Forum
30. Propylene side backpressure interlock in high-pressure depropanization tower - HCBBS Forum
31. Function of the exhaust gas water scrubber tower - HCBBS Forum
32. What is an appropriate ratio of heat exchange area to catalyst loading in a methanol synthesis tower? - HCBBS Forum
33. The pressure in the catalytic stabilizer won’t rise – what could be the reason? - HCBBS Forum
34. What material is suitable for upgrading the bottom reboiler of the wastewater stripping tower? - HCBBS Forum
35. On the control of the top pressure in the iron-molybdenum-formaldehyde tower - HCBBS Forum
36. Dilution line for the corrosion inhibitor line at the top of the butane stripping tower - HCBBS Forum
37. The liquid level in the middle of the air cooling tower is not long, and the instrument is fine. - HCBBS Forum
38. Selection of the orifice size for the nitrogen inlet throttle plate in the distillation tower - HCBBS Forum
39. What is the reason for the clogging of the ammonia evaporation tray? - HCBBS Forum
40. Please ask for help regarding the abnormal problem of periodic large fluctuations in liquid level, temperature, and pressure in the distillation tower! - HCBBS Forum
41. Regarding the material selection for the internal components of methanol synthesis towers, what material is generally used for the heat exchange tubes (water-cooled plates)? - HCBBS Forum
42. Problems in the double-tower steam stripping process for desulfurization and denitrification of wastewater - HCBBS Forum
43. Who has the drawings for a methanol synthesis tower? - HCBBS Forum
44. Process design for three-column distillation of 150,000 tons per year of methanol - HCBBS Forum
45. Spray drying tower - HCBBS Forum
46. The oil level of the cooling tower fan fluctuates significantly - HCBBS Forum
47. In the Tianjin University textbook, in section 5.5-9 on absorption processes, when the desorption factor S is kept constant, the composition Y1 of solute A in the gas phase entering the tower increases... - HCBBS Forum
48. Interlock between the electric valve of the cooling tower inlet pipe and the start/stop of the pump - HCBBS Forum
49. Seeking advice on oil contamination in the wastewater from the atmospheric and vacuum distillation towers - HCBBS Forum
50. Top circulation or cold reflux is used respectively to control the temperature at the top of the fractionation tower; regarding the efficiency of diesel and gasoline separation, which of the following statements is correct? - HCBBS Forum
51. The air-cooling tower for the Shenhua Yulin project was successfully lifted into place - HCBBS Forum
52. What is the required level of benzene content in the liquefied gas at the top of the reformation depentanizer? - HCBBS Forum
53. Absorber level - HCBBS Forum
54. I would like to ask fellow experts how the vapor tower in the separation tower achieves sealed discharge during the shutdown of the plant - HCBBS Forum
55. Why is the acid content in the products from the two towers in the methanol online process normal while the acid content in the final product is above the specified limit, and what are the solutions? - HCBBS Forum
56. Why is it easy to cause tower flooding when the temperature at the outlet of the heating furnace is low? - HCBBS Forum
57. The exhaust dust is gone; the tail end of the granulation tower is no longer there - HCBBS Forum
58. I don’t understand the reason for phase miscibility in the extraction tower. - HCBBS Forum
59. The liquid level in section C of the low-temperature methanol wash shift gas scrubber will not drop. How did everyone handle it? - HCBBS Forum
60. Lifting of the ethylene oxide refining tower at Yangzi Petrochemical - HCBBS Forum
61. Tilt of the coking tower when water is supplied for coking - HCBBS Forum
62. The reprocessed oil undergoes heat exchange, a process commonly referred to as \"second stage\". What determines the amount of material in this second stage and the temperature for returning it to the tower? How is the amount of material in this stage determined? - HCBBS Forum
63. The importance of intelligent diagnosis for cooling tower fan failures - HCBBS Forum
64. The 2# propylene tower of Sinochem Quanzhou Ethylene and Refining Renovation and Expansion Project was successfully hoisted - HCBBS Forum
65. Material of pipeline from high-temperature hot water pump outlet to washing tower - HCBBS Forum
66. Understanding the differences between the crime of serious labor safety accidents and the crime of serious liability accidents from the perspective of tower crane falling object accidents - HCBBS Forum
67. Distillation tower diameter - HCBBS Forum
68. What are the typical alarm values for high pressure difference at the inlet and outlet of the air cooling tower in an air separation unit, as well as the alarm value for low outlet pressure? - HCBBS Forum
69. Adding alkali solution to the acidic water stripping tower can effectively reduce the ammonia nitrogen content in the purified water. Could anyone explain its principle? - HCBBS Forum
70. Practical part of chemical process design - valve setting tower and heat exchanger - HCBBS Forum
71. The foundation bolts of the tower are buried too shallowly - HCBBS Forum
72. Cooling tower fan blade adjustment - HCBBS Forum
73. Summary of the Commissioning of the High-Efficiency Purification and Recovery System for Off-Gases from the Urea Granulation Tower at Yuntianhua with an Annual Production Capacity of 500,000 Tons - HCBBS Forum
74. What type of trays are used in wastewater stripping? - HCBBS Forum
75. Why is the temperature at the bottom of the extraction tower also need to be controlled? - HCBBS Forum
76. Issue of tray opening ratio in the stripping tower - HCBBS Forum
77. Regarding the carbonyl sulfide emission standards for exhaust gas scrubbers - HCBBS Forum
78. Why does the concentration of light components in the bottom liquid increase when the pressure in the distillation column rises? - HCBBS Forum
79. A sudden increase in the reflux ratio causes imbalance in the distillation column - HCBBS Forum
80. Dear experts, I’m wondering how to make this T-203 tower converge; it needs to be submitted the day after tomorrow. Please offer some guidance or help with making modifications. Thank you! - HCBBS Forum
81. Consultation on absorption tower installations - HCBBS Forum
82. Phenomena of packing blockage in distillation towers and their treatment - HCBBS Forum
83. The issue of converting the negative pressure at the top of the vacuum tower to absolute pressure - HCBBS Forum
84. I can’t understand why, in the stripper feed heat exchanger, the cold fluid flows through the tube side entering from above and exiting from below, while the product at the bottom of the tower flows through the shell side entering from below and exiting from above - HCBBS Forum
85. The hydrocracking unit’s fractionation tower is equipped with a bottom steam extraction column - HCBBS Forum
86. How to fix the spray piping inside the desulfurization tower to the tower wall - HCBBS Forum
87. Desulfurization tower verification - HCBBS Forum
88. Selection of large-scale ammonia synthesis tower type - HCBBS Forum
89. The function of the floating valve in the tower - HCBBS Forum
90. CAD diagram of the internal structure of the ammonia vaporization tower - HCBBS Forum
91. Regarding MD trays - HCBBS Forum
92. Feasibility study on eliminating the air-cooled tower - HCBBS Forum
93. Expert, please provide a solution to avoid the ethane tower. - HCBBS Forum
94. Which manufacturers are generally used for the exchanger at the exit of the synthesis tower? - HCBBS Forum
95. How can static electricity be dissipated and heat dissipation be ensured in the packing layer of a steel-lined plastic tower? The tower is a pressure vessel - HCBBS Forum
96. Cleaning of cryogenic nitrogen distillation column - HCBBS Forum
97. What is the single column cycle of fractionation system? There are also two towers connected together, - HCBBS Forum
98. On the corrosion problem of ammonia distillation towers - HCBBS Forum
99. How to solve the problems of tower sticking and flattened particles during high-temperature granulation in tall towers - HCBBS Forum
100. May I ask, what material is this tower made of? - HCBBS Forum