English — Forum #337 (Page 40/163)

1. Determination of the basic parameters of the spray granulation dryer - HCBBS Forum
2. Are all stop valves hard-sealed? What about gate valves? - HCBBS Forum
3. A yellowed book in my collection: 【Process Specifications for Fat Amine Production Equipment】 - HCBBS Forum
4. Experts, those who provide good answers regarding whether benzene is a source of highly toxic emissions will be greatly thanked. - HCBBS Forum
5. Is it feasible to fill gas cylinders using liquefied petroleum gas tank trucks? - HCBBS Forum
6. Is a parking lot considered a building or a structure? What is the required distance from Class A factories, and which regulations should be referred to? - HCBBS Forum
7. Filler types in packed towers - HCBBS Forum
8. What will happen to the pneumatic valves in the event of a sudden power outage and a disruption in the supply of instrument air? - HCBBS Forum
9. Discussion on double-valve piping issues - HCBBS Forum
10. Post on the distribution of wealth rewards in Process Area from March to May 2021 - HCBBS Forum
11. Do storage tanks for flammable and explosive substances need to be designed as pressure vessels? - HCBBS Forum
12. Organic Chemistry [Edited by Li Yanmei, Zhao Shengyin, Wang Lanying] 2011 edition - HCBBS Forum
13. Vacuum level and vacuum measurement - HCBBS Forum
14. Can storage tanks used to hold flammable and explosive materials be equipped with overflow ports and bottom drain ports as required by the specifications? - HCBBS Forum
15. Carbon Emission Manager 2022.2.17 - HCBBS Forum
16. The steam main pipe branches off to each tower (which are considered pressure vessels). The steam main pipe already has a safety valve. Is it still necessary to install a safety valve on each tower? - HCBBS Forum
17. Water hammer noise in U-tube heat exchangers - HCBBS Forum
18. Air separation: How is the flow rate of process argon calculated? Please provide the calculation method - HCBBS Forum
19. Some discussions about the control room? - HCBBS Forum
20. Seeking help: Problem with blockage at the lime feeding port - HCBBS Forum
21. The pump body rotates normally at low speeds, but there is a vibration issue at high speeds - HCBBS Forum
22. Seeking advice on the calculations for pressure-reduced gas supply in CNG trailers - HCBBS Forum
23. Experts, any questions regarding the installation of toxic gas alarms? Thank you - HCBBS Forum
24. How is the oil and gas recovery device used during unloading? - HCBBS Forum
25. Evaluation for the professional title of registered engineer - HCBBS Forum
26. Updates on Wanhua (Fujian)’s 400,000 tons/year MDI project: investment of 3 billion yuan - HCBBS Forum
27. Are 316L and 304 stainless steels resistant to formic acid and acetic acid? - HCBBS Forum
28. Who has a template for a monthly work summary from a chemical plant? I’d appreciate it if you could share it, thank you! - HCBBS Forum
29. Questions about the bottom-of-tower circulation rate - HCBBS Forum
30. Save money with a screw pump - HCBBS Forum
31. Compressed air pipeline diameter - HCBBS Forum
32. Calculation of vibration sieve mesh size - HCBBS Forum
33. Experts from safety associations have recommended that drawings indicate hydrogen-related areas – how should this be addressed? - HCBBS Forum
34. Phase-out date for hexabromocyclododecane - HCBBS Forum
35. Process of high-low parallel catalytic cracking reaction regeneration system - HCBBS Forum
36. Hydrogen gas cylinders Workshop - HCBBS Forum
37. Chemical Equipment Catalog: Reactors/Tower Equipment/Heat Exchangers/Tanks, Metering Tanks - HCBBS Forum
38. Highly recommended! Second Petrochemical Industry Industrial Internet Conference – Collection of Parallel Session Reports - HCBBS Forum
39. Mandatory renovation, upgrading, and phasing out! **Define the energy efficiency benchmarks and baseline levels for 14 key chemical industry sectors - HCBBS Forum
40. Sulfur self-preservation logic - HCBBS Forum
41. Collection of Papers from the 3rd Southwest Regional Forum on Automation and Safety Instrumentation System Upgrades in Hazardous Chemical Enterprises - HCBBS Forum
42. Doubts regarding the evaluation of tube sheet fillet welds in ISO 15614 - HCBBS Forum
43. Seeking advice on pipeline installation issues in the raw material tank area - HCBBS Forum
44. Corrosion prevention methods and insulation methods - HCBBS Forum
45. Typical process flow diagram for hydrorefining - HCBBS Forum
46. -Separation of mixed solutions of acetic acid and formaldehyde - HCBBS Forum
47. The sludge in the A2O aerobic tank has turned black; after a day of aeration, it remains black. What should be done? - HCBBS Forum
48. Is there any specification that specifies whether a dust removal system should be installed in the powder unpacking system? - HCBBS Forum
49. Digital and analog pH electrodes - HCBBS Forum
50. Methyl octabromide - HCBBS Forum
51. Check-in for help - HCBBS Forum
52. Seeking help with pipeline pressure testing issues - HCBBS Forum
53. Supplementary Volume to the Comprehensive Book on Safety Technology for Hazardous Chemicals - HCBBS Forum
54. Foamy oil under the low-pressure washing tower of polypropylene - HCBBS Forum
55. May I ask what the specific fire protection requirements for control valves are, and what accessories are needed? - HCBBS Forum
56. Small software for calculating pipeline pressure drop - HCBBS Forum
57. What material is used for the embedded sleeves in the tanks for hydrochloric acid wastewater? Are there plastic sleeves for passing through walls? Or it has preservatives - HCBBS Forum
58. What is the mechanism by which membranes are damaged by silicon and boron contamination? ? - HCBBS Forum
59. What is this device? - HCBBS Forum
60. Effect of the temperature in the cold high-pressure separator of the hydrogenation unit on pH - HCBBS Forum
61. Why is this? - HCBBS Forum
62. Fluid mechanics problems - HCBBS Forum
63. The pumps in the lubricating oil tank area are located within the cofferdam - HCBBS Forum
64. May I ask whether the small pipeline that supplies instrument air to the pneumatic valve is the responsibility of the piping department or the instrument control team? - HCBBS Forum
65. Tungsten Metallurgy, Central South University Press, Li Honggui, electronic version - HCBBS Forum
66. What do the analysis results mean? - HCBBS Forum
67. Is it possible to remove the small amount of salicylic acid crystals entrained in the mother liquor by washing and filtration? - HCBBS Forum
68. Thermodynamic Models for Industrial Applications _ From Classical and Advanced Mi*ng Rules to Association Theories —... - HCBBS Forum
69. Hello everyone, how do I draw a flow meter in a piping axis view? Are there any relevant diagrams available for reference? - HCBBS Forum
70. Seeking help with calculating the heat exchange area – what size is required? - HCBBS Forum
71. What is the flange standard for the ends of steel-lined enamel pipes? Is there a WN-RF model? - HCBBS Forum
72. The importance of process packages in chemical engineering design - HCBBS Forum
73. What are the criteria for being classified as a chemical enterprise? - HCBBS Forum
74. How can outdoor steel structure pools and pipes in northern Hebei be protected from freezing? - HCBBS Forum
75. Reply device - HCBBS Forum
76. Epichlorohydrin saponification process - HCBBS Forum
77. Yanchang Petroleum and Topsoo form a joint company; the 600-ton new catalyst project is set to begin construction - HCBBS Forum
78. Is there anyone who can repair control system components or has information on this topic? - HCBBS Forum
79. Deep processing and utilization of coal? - HCBBS Forum
80. On the piping diagram, what does BOP EL refer to: the bottom elevation of the outer diameter of the pipe or the inner bottom elevation? - HCBBS Forum
81. Selection of insulation material for tanks - HCBBS Forum
82. Container support and head problems - HCBBS Forum
83. I asked several manufacturers of graphite heat exchangers – can’t these graphite heat exchangers be made into pressure vessels for vapor condensation? - HCBBS Forum
84. Molecular sieve membrane dehydration technology - HCBBS Forum
85. Requesting help in downloading literature - HCBBS Forum
86. May I ask whether a plant that produces chlorine through the electrolysis of sodium chloride should be classified as Category A? Is explosion protection needed? - HCBBS Forum
87. Setting of the emergency valve position for the pump return switch valve - HCBBS Forum
88. How are shifts arranged in the foreign chemical industry? - HCBBS Forum
89. Guys, could you give some advice on how to use this pulley? - HCBBS Forum
90. What are the advantages of PDMS piping over some of the current domestic software? - HCBBS Forum
91. Water injection system - HCBBS Forum
92. How to extinguish chemical plant fires quickly from a perspective of intrinsic safety - HCBBS Forum
93. . Regarding pressure vessel issues - HCBBS Forum
94. Energy Conservation Association - HCBBS Forum
95. Food Biotechnology: A Communicator’s Guide to Improving Understanding - HCBBS Forum
96. Diatomite is used as a filter aid for activated carbon filtration and decolorization - HCBBS Forum
97. Zinc extraction from iron-zinc-containing waste acid - HCBBS Forum
98. How to prevent liquid ammonia from entering the flare system during startup/shutdown or in case of emergencies - HCBBS Forum
99. What standards are followed for the handover during the construction of chemical industry projects? - HCBBS Forum
100. Can a flame arrester be installed horizontally with the pipes aligned horizontally? Are there any hidden risks? - HCBBS Forum