English — Forum #723 (Page 309/642)

1. How to clean the tar deposited at the bottom of the coal gas pipelines before and after the blower? - HCBBS Forum
2. Daily Question, March 30, 2016: Deethanizer Control - HCBBS Forum
3. Can the exergy loss of a device be negative? - HCBBS Forum
4. 【Daily Question】Chemical Engineering Principles 351: Carbon Remover (March 30) - HCBBS Forum
5. 【Weekly Topic】【Storage & Transportation Version 20160330】 - HCBBS Forum
6. Material selection for copper tube heat exchangers - HCBBS Forum
7. On the treatment of phosphate wastewater - HCBBS Forum
8. Regarding the pipeline purging issue in heat transfer oil furnaces - HCBBS Forum
9. ★Haichuan’s “Thanksgiving Season” Grand Event ★ Please have regional managers submit high-quality event posts - HCBBS Forum
10. What is the impact of the high-temperature inlet temperature on operation? - HCBBS Forum
11. Seeking help with flashing - HCBBS Forum
12. 【Daily Question】20160406 Pressure testing of containers (First 50 participants get +2 wealth points) - HCBBS Forum
13. Control of steam flow rate in the tower top reboiler - HCBBS Forum
14. How should the drain guides for steam pipelines in utility tunnels be arranged to facilitate liquid drainage? - HCBBS Forum
15. Why are two flow meters installed between the rich and lean amine liquid heat exchanger and the amine liquid regeneration tower? - HCBBS Forum
16. Seeking help with the interlock logic related to control valves - HCBBS Forum
17. I would like to ask about the fire protection spacing requirements for the condensate tanks installed due to the inevitable low points along the flare pipe - HCBBS Forum
18. What are the reasons for the wear of conveyor rollers? - HCBBS Forum
19. Does anyone know how to set up a BB RTU controller? - HCBBS Forum
20. What is the amazing temperature sensing ring for calibrating the temperature in high-temperature furnaces? - HCBBS Forum
21. 【Daily Question】2016 04 05 Hydrogenation Sector Multiple-choice Question - HCBBS Forum
22. How is the pressure control in each stage of a triple-effect evaporator used to create a pressure gradient across the three stages? - HCBBS Forum
23. What causes changes in the cold filter point? Thank you - HCBBS Forum
24. Reviewing the Old to Discover the New (Series 7) - HCBBS Forum
25. Sign-in record post from April 10, 2016 - HCBBS Forum
26. I would like to ask whether carbon disulfide is considered a highly penetrating toxic substance, and whether it is necessary to use a high-neck flange Is strong permeability the key? - HCBBS Forum
27. Are there any companies in China that specialize in process simulation like Aspen? - HCBBS Forum
28. Why does heat generation occur when iron oxide powder is mixed with lead soot and lead paste to form pellets? - HCBBS Forum
29. Corrosion when graphite wound gaskets come into contact with carbon steel? - HCBBS Forum
30. Regarding questions about high-temperature dechlorination in the reforming pre-hydrogenation section, everyone is welcome to share their views - HCBBS Forum
31. Bearing overheating issue in multi-stage centrifugal pumps - HCBBS Forum
32. 【Weekly Topic】【Storage & Transportation Version 20160408】 - HCBBS Forum
33. 【Daily Question】 Hydrogenation Sector 2016 04 03 Multiple Choice - HCBBS Forum
34. 【Chat】Everyone is welcome to share information about the equipment in your workshop - HCBBS Forum
35. 【Daily Topic】【Production Version 20160406】 - HCBBS Forum
36. Aspen is seeking help - HCBBS Forum
37. 【Daily Topic】【Quality Version 20160330】 - HCBBS Forum
38. I would like to ask my colleagues: did your company conduct ammonia leak checks during the maintenance of the high-pressure equipment in its urea production facility? If an ammonia leak test was not performed... - HCBBS Forum
39. How to apply for an assistant chemical engineer position? - HCBBS Forum
40. Hydrogen dew point - HCBBS Forum
41. Is the range of the pressure gauge on the equipment taken into account with regard to the set pressure of the safety valve? - HCBBS Forum
42. About spherical tanks - HCBBS Forum
43. On LNG production from coke oven gas - HCBBS Forum
44. Steam mixing problem at different pressure levels - HCBBS Forum
45. Sulfur Daily Question, April 9------5 wealth for participation, 10 wealth for correct answers - HCBBS Forum
46. New moderator here; I’m sharing my resources with all the fellow users. Thank you for your support to the original poster! - HCBBS Forum
47. Regarding the selection of magnetic pump - HCBBS Forum
48. The temperature of the high-temperature liquid drops after passing through the valve. - HCBBS Forum
49. 【Weekly Topic】【HVAC Version 20160401】 - HCBBS Forum
50. Feed and reflux positions for azeotropic dehydration - HCBBS Forum
51. Production of sodium hypochlorite in the chlor-alkali industry - HCBBS Forum
52. Design questions regarding the nitrogen system - HCBBS Forum
53. One Question per Day on Synthetic Ammonia (Series 63) - HCBBS Forum
54. 【Joint Study*】【Civil Engineering Version 20160331】 - HCBBS Forum
55. Sulfur Forum is seeking a dedicated moderator - HCBBS Forum
56. The development project for a 3,000-ton-class space furnace by the China Aerospace Science and Technology Corporation has been approved - HCBBS Forum
57. Problems with valve rust and maintenance - HCBBS Forum
58. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 479 - HCBBS Forum
59. Leakage issues with explosion relief valves in gas (oil, pulverized coal) boilers - HCBBS Forum
60. Chemical cleaning of pipes, degreasing of pipes, acid cleaning of pipes, standards for chemical cleaning processes of pipes - HCBBS Forum
61. What is the pre-stretch amount of the compensator? - HCBBS Forum
62. Top 10 Most Influential Safety Production Documents of 2015 - HCBBS Forum
63. Why is the toughening effect of current silicon-based powders not significant? - HCBBS Forum
64. 【Daily Question】April 01, 2016: What is the chemical composition of petroleum? - HCBBS Forum
65. I would like to ask, what is the relationship between the flange diameter and the size of the gasket? - HCBBS Forum
66. 【Daily Topic】【Production Version 20160405】 - HCBBS Forum
67. 【Mechanical Division】Post on assessments of management and technical teams sowie payment of salaries and bonuses for March 2016 - HCBBS Forum
68. How does a cryogenic compression air dryer work? - HCBBS Forum
69. On galvanic corrosion of valve pipelines on oil production platforms - HCBBS Forum
70. sec-butyl acetate - HCBBS Forum
71. The days after I met hcbbs in 2006 - HCBBS Forum
72. Calibration issues with Rosemount 3051 pressure gauges - HCBBS Forum
73. Integrated device for carbon adsorption, desorption, and electrolysis in gold mining - HCBBS Forum
74. So “Turtle” = Oogway - HCBBS Forum
75. On the design standards for low-temperature shell-and-tube heat exchangers - HCBBS Forum
76. How to fix the slow performance of Pro2 after reinstalling the computer? - HCBBS Forum
77. Process flow diagram and equipment list for 100,000–200,000 tons/year nitro compound fertilizer production - HCBBS Forum
78. Pipeline flow calculation problem - HCBBS Forum
79. Which are the companies involved in wet-process zinc production? - HCBBS Forum
80. Wastewater treatment and resource utilization technologies for large-scale farms - HCBBS Forum
81. One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 280 - HCBBS Forum
82. Oil leakage from the crankcase filling port of a reciprocating compressor - HCBBS Forum
83. Environmental Protection Daily Tip 4.07: Reward for participation is 5 points, plus another 5 points for answering correctly - HCBBS Forum
84. Patent licensing fee - HCBBS Forum
85. Compensation for the liquid level gauge in the double-chamber balance vessel of the boiler drum - HCBBS Forum
86. Welding of SW6 tube sheets to tubes in the strength calculation of U-tubes - HCBBS Forum
87. In the convection section of a tubular furnace, ordinary steam is heated to become superheated steam; after being transported for a certain distance, its temperature drops back to that of ordinary steam? - HCBBS Forum
88. What are the differences in the application of the Claus process in refineries and coal chemical industries? - HCBBS Forum
89. Troubleshooting of biogas stoves - HCBBS Forum
90. 【Alkylation】The alkylation reaction is incomplete, resulting in a high amount of olefins in the subsequent isobutane removal column and n-butane removal column. How to solve this? . - HCBBS Forum
91. What type of deaerator is suitable for fuel and gas boilers with a capacity of 10 tons or less? Analysis? Filter? Thermal deaeration? - HCBBS Forum
92. Sign-in record post from April 4, 2016 - HCBBS Forum
93. May I ask if ball valves with fluoroplastic sealing surfaces can be used in negative pressure conditions? - HCBBS Forum
94. The flash vaporization unit adds a sealed chamber - HCBBS Forum
95. Electrodialytic emulsion layer wastewater treatment - HCBBS Forum
96. About filter element manufacturers - HCBBS Forum
97. I’m sharing with everyone some methods to improve English skills and some American TV shows - HCBBS Forum
98. 【Chemical Industry News】Can diesel be used to make white oil? Urgently need technology - HCBBS Forum
99. 【Shale Gas Market】Everything About Shale Gas - HCBBS Forum
100. One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 282 - HCBBS Forum