English — Forum #647 (Page 13/34)

1. What are the reasons for an increase in the pressure in a distillation tower? How to handle it? - HCBBS Forum
2. Changes in the side-stream withdrawal volume of the single-tower pressurized sewage stripping tower - HCBBS Forum
3. Refrigeration tower bottom vapor control valve - HCBBS Forum
4. Useful tips: How is an automated control system for monitoring water tower levels controlled and implemented? - HCBBS Forum
5. What to do if there is a penetration through the negative-pressure tower in the C9 hydrogenation process? - HCBBS Forum
6. Towers and lightning rods - HCBBS Forum
7. Design issues of packed towers in Aspen - HCBBS Forum
8. Problems encountered with the exhaust gas absorption tower on the tank top - HCBBS Forum
9. What material is good for the filter screen at the bottom of the tower? - HCBBS Forum
10. How should a distillation column be designed to separate three materials with large differences in boiling points? - HCBBS Forum
11. Can the air-cooling tower of the air separation unit be removed? - HCBBS Forum
12. Fillers and catalysts in the catalytic tower used in used engine oil refining - HCBBS Forum
13. The service life of tower cranes is reduced by another 5 years, and even more so for elevators! - HCBBS Forum
14. What type of pressure transmitter is used in vacuum distillation towers? - HCBBS Forum
15. Location of the exhaust fan and spray tower - HCBBS Forum
16. Is this a sieve plate tower? - HCBBS Forum
17. Is there any software for calculating the strength of desulfurization absorption towers? - HCBBS Forum
18. Distillation column simulation modeling - HCBBS Forum
19. Problems in HYSYS simulation of hydrogen sulfide stripping towers - HCBBS Forum
20. Tower Equipment Solutions - HCBBS Forum
21. How to deal with internal blockages in the methanol/water separation tower of low-temperature methanol washing? - HCBBS Forum
22. For a tower with gas-liquid mixing, is normal pressure considered to be that of a normal-pressure storage tank? - HCBBS Forum
23. Atmospheric and vacuum distillation unit flash tower - HCBBS Forum
24. 【Purchase Request】Ethylene, hydrogen, nitrogen, hexane, dehydrating and deoxygenating purification tower equipment - HCBBS Forum
25. The impact of water in catalytic crude gasoline on the operation of the absorption tower - HCBBS Forum
26. The feed gas at the bottom of the tower enters in a zigzag pattern through the pipeline - HCBBS Forum
27. Fractionation tower reaction depth - HCBBS Forum
28. Can a stripping tower with side lines be used for extractive distillation? - HCBBS Forum
29. The purity of the product at the top of the gas separation tower is decreasing, and repeated adjustments have not been effective - HCBBS Forum
30. Regarding the issue with the nozzles of the high-tower granulator, - HCBBS Forum
31. Urgent help: Reasons for the increase in pH value in Tower 1IC and the measures taken. - HCBBS Forum
32. Synthesis tower drum - HCBBS Forum
33. Seek a simulation example (template) for a mixed-structure absorption tower (tray + packing) - HCBBS Forum
34. Discussion on the riser pressure drop of FCC-III gasoline in catalytic cracking, pressure drop in the secondary settler, and pressure drop in the secondary fractionator. - HCBBS Forum
35. How is heat and static electricity conducted within a packed tower (with steel lining and plastic coating)? Are there any good solutions? - HCBBS Forum
36. Regarding tower distillation, what are the advantages and disadvantages of reduced pressure, atmospheric pressure, and increased pressure? - HCBBS Forum
37. Issues with the feed inlet of the distillation column reflux tank - HCBBS Forum
38. decompression tower - HCBBS Forum
39. In cryogenic air separation, the liquid level in the middle of the air cooling tower does not rise; instead, it shows a downward trend. If water is added, the resistance of the air cooling tower increases, and the liquid level still does not rise. To reduce the liquid level in the middle, it is necessary to first lower the resistance. Then lower the liquid level, close the drain valve, and the liquid level in the middle will rise quickly. Half an hour later - HCBBS Forum
40. Is the gas phase the one that comes out of the bottom reboiler in the wastewater stripping tower within the DMTO unit? - HCBBS Forum
41. Catalytic fractionation tower - HCBBS Forum
42. How to determine the temperatures at various points in a vacuum distillation tower? - HCBBS Forum
43. Dear acid enthusiasts, what do you think is an appropriate concentration of acid in the drying tower? Please share your opinions - HCBBS Forum
44. Several questions regarding the radfrac of distillation columns - HCBBS Forum
45. When the feedstock becomes lighter, the bottom temperature of our distillation tower decreases, while the top temperature increases. But why does the acidic gas at the top of the reflux tank at the tower top decrease? And as the raw material becomes heavier, the bottom temperature increases while the top temperature decreases; as a result, the amount of acidic water at the top of the reflux tank increases. I would like to ask the experts: why is it acidic? - HCBBS Forum
46. Equilibrium in the air separation tower - HCBBS Forum
47. Amine liquid absorption tower - HCBBS Forum
48. Regarding tower equipment with ear-seat support for hanging floor slabs - HCBBS Forum
49. stripper trays - HCBBS Forum
50. Commissioning of the ethylene distillation tower and ethylene circulation system - HCBBS Forum
51. Gas selection for bisphenol A granulation tower - HCBBS Forum
52. Pipeline at the bottom of the reflux tank in the distillation column - HCBBS Forum
53. Questions regarding the hydraulic testing of tower equipment - HCBBS Forum
54. I need help understanding the relationship between the size of the concentration line in the low-temperature methanol wash regeneration tower and the temperature of the sulfur recovery furnace - HCBBS Forum
55. Calculation of the outlet flow rate of the gas absorption tower - HCBBS Forum
56. Does an increased feed rate to the isobutane removal column affect the purification at the top of the column? (Alkylation unit) - HCBBS Forum
57. Sending two tower units to Inner Mongolia today - HCBBS Forum
58. What is the purpose of installing a vapor line at the top of the catalytic feed tank to connect it to the distillation tower? - HCBBS Forum
59. Seeking help with the principle of mass transfer in bubble columns - HCBBS Forum
60. Dechlorination tower vacuum control - HCBBS Forum
61. How to prevent freezing of fire steam at the tops of various towers in winter - HCBBS Forum
62. What should be used as a level gauge for vacuum distillation towers? - HCBBS Forum
63. Problems with the alkylation deisobutane tower - HCBBS Forum
64. How are the process parameters and methanol flow rates for each column section in low-temperature methanol washing determined? - HCBBS Forum
65. What to do if there is a fault in the packed tower? These 20 methods are enough! - HCBBS Forum
66. Control at the outlet of the reflux pump in the overhead separator of the distillation tower - HCBBS Forum
67. Why is a composite plate of S30408 + Q345R used as the main material for the debutanization tower, with a design pressure of 2.6 MPa and a design temperature of 300 degrees? - HCBBS Forum
68. Stabilizer tower operation - HCBBS Forum
69. Seeking help with tower design drawings - HCBBS Forum
70. Distillation column separation problem - HCBBS Forum
71. Selection of material standards for tower internals - HCBBS Forum
72. We handle 800,000 tons of diesel hydroprocessing; when operating normally, the reflux tank at the top of the desulfurization tower is always full. Following technical upgrades, a line was added to send naphtha to the tank area, but the tanks there are external floating-roof tanks equipped with breather valves, which allows hydrogen sulfide to escape easily. in detail - HCBBS Forum
73. How to calculate when the number of packing sections in the SW6 tower exceeds 5? - HCBBS Forum
74. Regarding the methanol water distillation tower - HCBBS Forum
75. [Discussion Thread 34] Questions and doubts regarding the non-compressed components of tower vessels. - HCBBS Forum
76. Leak in the reboiler at the bottom of the tower - HCBBS Forum
77. The function of the bypass in the desulfurization tower of hydrocracking (high-pressure amine absorption tower) - HCBBS Forum
78. What is the purpose of the oil collection tray located on the middle tray of the diesel hydrogenation absorption/desorption tower? - HCBBS Forum
79. A woman climbed onto a 200,000-volt electricity tower and committed suicide - HCBBS Forum
80. Regarding the gas velocity in an empty distillation column - HCBBS Forum
81. 【Discussion thread 38】: What should we pay attention to when setting up and designing tower top hanging columns? - HCBBS Forum
82. Experts, does anyone have the drawings for the tower top suspension column HG/T21639-13? - HCBBS Forum
83. Is there a flow deviation in the return pipe at the top of the water cooling tower, causing no water to flow out from one of the pipes? - HCBBS Forum
84. Collect this article and learn about distillation towers, bubble cap towers, and extraction towers instantly…… - HCBBS Forum
85. Spray tower deodorization circulating liquid tank - HCBBS Forum
86. Discharge from the ammonia purification tower - HCBBS Forum
87. Discussion on the pressure control methods for distillation towers. - HCBBS Forum
88. Number of side streams in the vacuum distillation tower issue - HCBBS Forum
89. Questions regarding the calculation of lateral wind vibration in tall, oscillating towers - HCBBS Forum
90. Permanent magnet speed control is used in cooling towers - HCBBS Forum
91. Asking for help from experts, we use a float bucket with a measuring range of 1.6M for the third line of the pressure reduction tower, but it doesn’t change much. - HCBBS Forum
92. How to deal with severe water contamination in crude oil entering the tower? - HCBBS Forum
93. Backflow tower blockage - HCBBS Forum
94. Why does the tower pressure fluctuate in the absorption stabilization system? - HCBBS Forum
95. The hoisting of the nitrogen stripping tower for the methanol purification unit in the second phase of the Yanchang Jingbian project of Shaanxi Yanchang China Coal Yulin Energy Chemical was completed - HCBBS Forum
96. Hydrogen sulfide absorption tower - HCBBS Forum
97. What are the reasons for nitrogen blockage in the crude argon column and the methods for operational adjustments? Do anyone have any suggestions? - HCBBS Forum
98. Is it reasonable to require the absorption tower liquid level to be controlled at 100%? - HCBBS Forum
99. What is the reason for the significant increase in pressure in the rich liquid flash tank, caused by pressure fluctuations in the liquefied gas desulfurization tower? - HCBBS Forum
100. If too much heat is extracted from the wax oil in the coking distillation tower, what effects will it have on the properties and flow rates of the various products? - HCBBS Forum