English — Forum #337 (Page 75/163)

1. Seeking advice on the calculation of safe discharge volumes - HCBBS Forum
2. Problems with the installation of breather manholes on storage tanks - HCBBS Forum
3. Is it necessary to implement the two key points and one major SIS system? - HCBBS Forum
4. MVR commissioning - HCBBS Forum
5. For strength testing, airtightness testing, and leakage testing – is it sufficient to conduct just one of them? - HCBBS Forum
6. Citric acid science* - HCBBS Forum
7. Equipment for concentrating sulfuric acid after nitration - HCBBS Forum
8. Analysis of typical problems in steam transmission pipelines - HCBBS Forum
9. Crystallization on the wall - HCBBS Forum
10. Do you handle the export of construction equipment? ! - HCBBS Forum
11. Desulfurization technology - HCBBS Forum
12. Help needed regarding acrylonitrile-related issues - HCBBS Forum
13. I would like to ask: For Class A process units, it is necessary to install pipe racks around them. What should be the fire separation distance between these pipe racks and the process unit area? - HCBBS Forum
14. Power cables and wires should not be laid on gas pipelines and supports - HCBBS Forum
15. Flow rate issues for general gases and liquids - HCBBS Forum
16. How to specify the design conditions for the safety valve outlet pipeline - HCBBS Forum
17. Does concentrated sulfuric acid react with dimethyl ether? - HCBBS Forum
18. I would like to ask the experts here: where can I find data on the physical properties of isopropylbenzene at different temperatures? Including (density, viscosity, specific heat capacity, etc.) - HCBBS Forum
19. PSE burst disc - HCBBS Forum
20. 【Process Engineering Division – Pipeline and Valve Technology Exchange Forum – Daily Question – Questions 05-22】 - HCBBS Forum
21. For a solvent tank with nitrogen sealing, designed at a pressure of 0.08 MPa, what should be the pressure used for testing? Is a gas-tightness test still needed? - HCBBS Forum
22. [Daily Question] Basic Process Knowledge (True/False Questions) 20190808 - HCBBS Forum
23. On the rational selection of pipe materials - HCBBS Forum
24. Regarding the fire hazard classification in the fire protection code GB50160 - HCBBS Forum
25. What is the room in a chemical plant where cabinets are placed called? - HCBBS Forum
26. Safety Valve Calculation Table - HCBBS Forum
27. [Discussion Thread] [Daily Question] Basic Process Knowledge (True/False Questions) 20190716 - HCBBS Forum
28. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190909 - HCBBS Forum
29. [Daily Question] Basic Process Knowledge (True/False Questions) 20190516 - HCBBS Forum
30. Can the set pressure of the breathing valve be equal to the operating pressure of the storage tank? ? How should the design pressure of the storage tank be determined? Set as.. - HCBBS Forum
31. Liquids with a high flash point and a Class C hazard also have an explosive limit. - HCBBS Forum
32. Efficiency calculation of single-stage back-pressure steam turbines - HCBBS Forum
33. Analysis of the reasons for the unexpected decrease in steam flow rate - HCBBS Forum
34. Must a micro-positive pressure nitrogen-sealed storage tank be equipped with a safety valve? - HCBBS Forum
35. Are coders really that great? With high salaries and a good working environment, is there any need to continue working in other industries? - HCBBS Forum
36. Issues regarding flue gas heating in bag filters to prevent bag clogging - HCBBS Forum
37. Throttle orifice plates and orifice plate flow meters in the basic pump unit mode - HCBBS Forum
38. For steel-lined control valves and flow meters used in PVC-C pipes, how should they be supported? How is a pneumatic cut-off valve supported when installed on a vertical pipe? - HCBBS Forum
39. Improving the operation of the gas separation unit through process simulation to reduce its energy consumption - HCBBS Forum
40. [Daily Question] Basic Process Knowledge (True/False) 20190714 - HCBBS Forum
41. [Daily Question] Basic Process Knowledge (True/False Questions) 20190527 - HCBBS Forum
42. Calculation of safe flow velocity - HCBBS Forum
43. Seeking help from excellent powder equipment companies - HCBBS Forum
44. Why is air separation always provided in the form of a complete package design? - HCBBS Forum
45. Determination at the pipeline level - HCBBS Forum
46. The practical application of silicon slag in steelmaking and casting in the smelting process! - HCBBS Forum
47. How to design an emergency discharge system for a reaction vessel - HCBBS Forum
48. How should the amount of waste gas generated be determined for open collection tanks, outdoor workshops, and vacuum pumps? - HCBBS Forum
49. Equipment design temperature and temperature under special conditions - HCBBS Forum
50. How can matrix asphalt reduce ash content? Help! - HCBBS Forum
51. Detection - HCBBS Forum
52. Selection of reactor agitator type - HCBBS Forum
53. For the first start-up of a chemical plant, can the sequence of gas purging and water washing be adjusted? - HCBBS Forum
54. Solutions for treating non-condensable gases as ammonia - HCBBS Forum
55. Is the theoretically calculated temperature drop of insulated pipes similar to the actual temperature drop? - HCBBS Forum
56. In the evaporation system, the issue of vacuum pumping capacity - HCBBS Forum
57. Is there any standard that provides an accurate definition of combustible liquids and flammable liquids? - HCBBS Forum
58. What is the relationship between molar enthalpy, mass enthalpy, molar entropy, and mass entropy? - HCBBS Forum
59. The pressure gauge is labeled as a high-temperature resistant one, but its temperature range is indicated as -20/+80°C. Can it be used at 200°C? - HCBBS Forum
60. CMP (CORROSION MANAGEMENT PROGRAM) - HCBBS Forum
61. How to deal with the viscous substance formed when liquid sulfur dioxide in a cylinder vaporizes - HCBBS Forum
62. LiCl recovery manufacturers - HCBBS Forum
63. Desulfurization synergist - HCBBS Forum
64. There are so many types of silicon carbide used in casting – I actually didn’t know any of them! - HCBBS Forum
65. Aeration is not required for iron and manganese removal; the new filter media process is provided here for your reference. - HCBBS Forum
66. [Daily Question] Basic Process Knowledge (True/False) 20190703 - HCBBS Forum
67. Classification of explosive hazard areas - HCBBS Forum
68. What grade do fire-resistant materials made of carbon steel such as Q235A, Q235B, and 304 steel belong to? What is this for? - HCBBS Forum
69. Is it okay for the pipe support to extend outside the bracket? - HCBBS Forum
70. Blowout discs for electronic gas circuits - HCBBS Forum
71. Positive pressure leakage test during testing: The effect of humidity inside the container on temperature and pressure changes - HCBBS Forum
72. WET FGD DESIGN MANUAL Professional information on desulfurization sharing - HCBBS Forum
73. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190915 - HCBBS Forum
74. Coal type requirements for gas generators - HCBBS Forum
75. Diagram of the circulating water intake well – what does that spherical object in the diagram represent? - HCBBS Forum
76. Dear experts, issue regarding the location for adding chemicals to the steam drum of the heating furnace - HCBBS Forum
77. According to Table 5.2.1 of the petrochemical regulations, there is no requirement for a distance between offices and control rooms; does this mean that the fire protection requirements regarding spaces between buildings as stipulated in building codes do not need to be met? - HCBBS Forum
78. Regarding the installation of shut-off valves upstream and downstream of the control valve without providing a bypass - HCBBS Forum
79. Check manual name - HCBBS Forum
80. Should a bypass be installed for the steam trap piping? - HCBBS Forum
81. Is the thermal engineering field important in refinery design institutes? - HCBBS Forum
82. Non-destructive testing sampling ratio issue - HCBBS Forum
83. [Daily Question] Basic Process Knowledge (True/False) 20190710 - HCBBS Forum
84. The factory price of silicon-aluminum-barium-calcium is insanely low; saving a little money ends up costing you a lot! - HCBBS Forum
85. Does liquid ethane belong to the category of petroleum and natural gas? What are the relevant classification criteria? - HCBBS Forum
86. Vacuum evaporation, tube diameter selection - HCBBS Forum
87. The glyoxal product turns yellow after production; I would appreciate it if experts could analyze the reason for this - HCBBS Forum
88. May I ask? - HCBBS Forum
89. PID diagram for motor operation - HCBBS Forum
90. Can the double-alkali method for desulfurization use sodium hydroxide and calcium carbonate? - HCBBS Forum
91. Can an explosion vent be installed on the storage tank? What is the detonation pressure of the blast relief disc? - HCBBS Forum
92. We have a sulfurization reactor; I’m not sure if a safety valve is necessary - HCBBS Forum
93. The pH of the water produced by RO membrane water treatment is too low - HCBBS Forum
94. I would like to ask the experts: with the hydraulic oil station’s condenser remaining unchanged, does a larger water volume result in a better cooling effect? - HCBBS Forum
95. [Process Engineering Division – Pipeline and Valve Technology Exchange Forum – Daily Question – Questions 05–14] - HCBBS Forum
96. How to prevent heat exchange tubes from freezing in low-temperature fluid heat exchange - HCBBS Forum
97. Discussion on the installation of safety valves and rupture discs in atmospheric pressure reactors - HCBBS Forum
98. Questions regarding design temperature and design pressure - HCBBS Forum
99. Why does the temperature decrease in the Aspen simulation after adding a splitter? - HCBBS Forum
100. Sulfuric acid tank overflow and venting - HCBBS Forum