English — Forum #337 (Page 49/163)

1. Seek guidance on tower design - HCBBS Forum
2. Solve the problem of high sulfate content in the alkaline absorption output of Claus plant exhaust gases - HCBBS Forum
3. Does burning ammonia-containing waste gas increase nitrogen oxides? - HCBBS Forum
4. Help – Oil and gas processing project – Complete set of PFDs for the boiler room - HCBBS Forum
5. What is the structural relationship between carbon monoxide and hydrogen in heating furnace flue gas? - HCBBS Forum
6. Old K says every week – talking about things in the petrochemical design industry. Post 19: Understanding pump NPSH in a few words - HCBBS Forum
7. Process package design - HCBBS Forum
8. The Sinopec Hainan Refining and Chemicals project for the production of one million tons of ethylene as well as refinery expansion is progressing in an orderly manner - HCBBS Forum
9. Catalyst filling method - HCBBS Forum
10. In heat exchange equipment, if toxic/flammable materials leak into the heat exchange medium - HCBBS Forum
11. Extremely hazardous and highly hazardous media - HCBBS Forum
12. Protection measures for propyl cyanohydrin storage tanks - HCBBS Forum
13. How to calculate the evaporation rate of a distillation tower - HCBBS Forum
14. The aerial vehicle frequently experiences high pressure and stalls - HCBBS Forum
15. When driving a vehicle into an explosion-proof area to unload goods, does the vehicle need to be explosion-proof, or what safety measures are required? - HCBBS Forum
16. With the same pipe diameter at the fan outlet, can the fan’s pressure and flow rate be made infinitely high? - HCBBS Forum
17. Overall heat transfer coefficient of shell-and-tube exchangers - HCBBS Forum
18. Flow rate limits for flammable liquids in pipelines - HCBBS Forum
19. Number of packing layers in the hydrogenation reactor - HCBBS Forum
20. Prepolymer filter switch, slicing turning black – what could be the cause? - HCBBS Forum
21. I would like to ask about some issues encountered when using steam pressure regulators - HCBBS Forum
22. Is the spring of carbon dioxide coming? - HCBBS Forum
23. Introduction to the turbine shaft seal system - HCBBS Forum
24. Ethylene plant - HCBBS Forum
25. I’d like to ask everyone: my wealth value isn’t enough, so I can’t download the things I want to see. Can I buy points? - HCBBS Forum
26. What by-products are produced when propylene is hydrogenated to isopropyl alcohol? - HCBBS Forum
27. Lanzhou Fire and Rescue Brigade organized an emergency drill using its petrochemical specialty team - HCBBS Forum
28. Calcium carbide production process - HCBBS Forum
29. Schematic diagram of the segmented continuous oil refining process - HCBBS Forum
30. Process package document design: What aspects need attention in the process description? - HCBBS Forum
31. Full-pressure issue of centrifugal fans - HCBBS Forum
32. Regarding the sulfuric acid fluid categories - HCBBS Forum
33. Steam volume calculation - HCBBS Forum
34. Is it effective to use water spray to deal with a small amount of non-condensable dichloroethane in the condenser? - HCBBS Forum
35. Which system is more corrosive, hydrogen chloride gas or an aqueous solution of hydrochloric acid? - HCBBS Forum
36. Seeking help with process material codes - HCBBS Forum
37. A brief analysis of the application of enzyme-catalyzed techniques in green chemistry - HCBBS Forum
38. Can hydrofluoric acid clean oil and stains on stainless steel pipes? - HCBBS Forum
39. Reasons for the deviation between simulated and actual values in liquefied ammonia flashing - HCBBS Forum
40. I would like to ask what procedures are required to purchase pure oxygen externally and to set up a storage tank for it; is it necessary to register it as a pressure vessel? - HCBBS Forum
41. 【Haichuan Equipment Guessing Game】Guess what kind of equipment this is - HCBBS Forum
42. Old K says every week – talking about things in the petrochemical design industry. Post 27: Fitting numbers - HCBBS Forum
43. High temperature in the heat transfer oil expansion tank - HCBBS Forum
44. Can a one-way valve with a duct create negative pressure? - HCBBS Forum
45. Is the spiral press effective for treating physical-chemical sludge and biochemical sludge? Those who have used it, please share your experience. Thank you - HCBBS Forum
46. How to write program modules - HCBBS Forum
47. Why are metal pipes used for pipelines that transport flammable and explosive gases, while gas extraction pipes in coal mines are made of non-metallic materials... - HCBBS Forum
48. I would like to ask: what is the fire hazard classification for 31% hydrochloric acid? - HCBBS Forum
49. Is it necessary to perform calculations and select appropriate valves for process instrumentation bypasses? - HCBBS Forum
50. Old K says every week – talk about things in the petrochemical design industry. Post 44: There are many meetings in peacetime - HCBBS Forum
51. How to precisely control the dripping rate of a small flow rate under vacuum conditions - HCBBS Forum
52. The refining and chemical industry is experiencing a new wave of capacity expansion; basic chemical products may face oversupply within three years - HCBBS Forum
53. Online switching of turbine-driven centrifugal compressors - HCBBS Forum
54. Regarding the definition of Class B fluids in GB50316 - HCBBS Forum
55. Applications of dodecylthiol and n-dodecylthiol in lubricant additives - HCBBS Forum
56. Regarding hazardous chemical processes - HCBBS Forum
57. Ammonia synthesis tower shell temperature - HCBBS Forum
58. Selection of parallel pumps - HCBBS Forum
59. What are the common types of circulating water fillers, and what is their performance? - HCBBS Forum
60. Common toxic gas range and alarm settings - HCBBS Forum
61. HTRI Learning*Communication Channel - HCBBS Forum
62. Explosion-proof issues when vacuum pumps are connected by belts - HCBBS Forum
63. What is the maximum pressure rating for rigid PTFE gaskets? - HCBBS Forum
64. China Petroleum and Petrochemical Industry Federation announces key tasks for 2021 and plans for important meetings - HCBBS Forum
65. Destination of the safety valve outlet in the workshop - HCBBS Forum
66. May I ask where the discharge piping of the safety valve is required to be connected according to current standards? - HCBBS Forum
67. Insulation of methanol tanks - HCBBS Forum
68. Is it truly possible to achieve zero emissions in chemical production? Is it merely a theoretical possibility? - HCBBS Forum
69. How should the diameter of the safety valve on an LPG vaporizer be chosen? - HCBBS Forum
70. Is it necessary to install toxic gas alarms and related equipment for sulfur dioxide? - HCBBS Forum
71. Lao K says every week – talking about things in the petrochemical design industry. Post 43: A call to merge the HG standards with the SH standards - HCBBS Forum
72. Block diagram of the control principle for the outlet temperature of a tubular furnace - HCBBS Forum
73. What to do if there is too much heavy fraction at the top of the distillation tower? - HCBBS Forum
74. How to determine the operating pressure of the pump outlet pipeline - HCBBS Forum
75. Item description in the single-line diagram - HCBBS Forum
76. Experts, can two sets of Class A facilities (two fine chemical plants with an annual production capacity of 200 tons each) be placed in one workshop? - HCBBS Forum
77. Dispute over the pipeline material for 30% sodium cyanide solutions - HCBBS Forum
78. Regarding the slurry catalysts for full-density polyethylene in fluidized beds, how does T3/DC affect the hydrogen blending copolymerization behavior? - HCBBS Forum
79. Water cooler temperature control scheme - HCBBS Forum
80. Dangerous Chemical Reactions----Author: Wang Shibing - HCBBS Forum
81. How can the yield of epichlorohydrin produced by the glycerol method be increased? - HCBBS Forum
82. Selection of distillation column reflux method - HCBBS Forum
83. When stopping a reciprocating pump, should the stroke be reset first or should the power supply be turned off first? - HCBBS Forum
84. Demand has collapsed; storage is in urgent need! Oil prices keep plunging, with bankruptcies in the oil industry on the rise! What are the prospects for an increase in the chemical industry? - HCBBS Forum
85. What type of steel is resistant to corrosion when using 4% hydrochloric acid (with the remainder being water), at a temperature of 20–50°C? - HCBBS Forum
86. Freezing prevention issue for 20% ammonia storage tanks in the north - HCBBS Forum
87. Tianjin Bohua – Ethylbenzene production unit process - HCBBS Forum
88. Nitration reaction NOX condensation issue - HCBBS Forum
89. Corrosion resistance of Hastelloy C-276/UNS N10276 and main application environments - HCBBS Forum
90. What are the consequences of excessive liquid inlet at the top of a trough distributor? - HCBBS Forum
91. I would like to ask the experts: in the phenol propylene process, why does sulfuric acid, acting as a catalyst, have an inhibitory effect on the decomposition of CHP? - HCBBS Forum
92. Block diagram of the crude benzene refining process. - HCBBS Forum
93. Seeking help regarding the density of aqueous solutions of n-propanol at different concentrations - HCBBS Forum
94. Why is an oil and gas recovery system necessary for loading ships at the dock, when they already have one on board? ? Just use the one on the ship, isn’t it heavy here... - HCBBS Forum
95. Post on the distribution of wealth rewards for Process Area in September 2020 - HCBBS Forum
96. Comparison and selection of feed positions for stirrer tanks - HCBBS Forum
97. Millions of tons of carbon are captured each year – An overview of Sinopec Nanjing Chemical’s CCUS technology - HCBBS Forum
98. Sulfur recovery technology - HCBBS Forum
99. Can an asphalt tank be installed underground inside a factory building? - HCBBS Forum
100. Oil separator and water seal well - HCBBS Forum