English — Forum #337 (Page 72/163)

1. Class C workshops are equipped with Class A intermediate warehouses - HCBBS Forum
2. Properties of water and water vapor - HCBBS Forum
3. Control method of exhaust fan - HCBBS Forum
4. Emissions from batch hydrogenation reactions in fine chemical industry. - HCBBS Forum
5. Liquefied hydrocarbon pipeline valves cannot be installed on risers; please provide the source and reason. - HCBBS Forum
6. Regarding the amount of released gas - HCBBS Forum
7. Issues regarding the layout of the two-stage cooling process - HCBBS Forum
8. Reactor vent pipe - HCBBS Forum
9. New classification of industrial pipe grades - HCBBS Forum
10. How is the minimum return flow rate of a centrifugal pump to the tank calculated? The normal flow rate is 10 m3/h; when selecting a pump, the flow rate to the return tank also needs to be taken into account... - HCBBS Forum
11. How to detect trace water in anhydrous hydrogen fluoride, and what methods can be used to remove it? - HCBBS Forum
12. Modification of foam pipes in acetic acid storage tanks - HCBBS Forum
13. The pressure relief and discharge issue of screw pumps - HCBBS Forum
14. Should ventilation systems be installed in warehouses storing Class A hazardous chemicals? - HCBBS Forum
15. Issues related to operating costs in industrial wastewater treatment - HCBBS Forum
16. Guys, how is the maximum filling capacity of atmospheric-pressure tank trucks calculated? - HCBBS Forum
17. [Daily Question] Basic Process Knowledge (True/False) 20190627 - HCBBS Forum
18. [Daily Question] Basic Process Knowledge (True/False Questions) 20190904 - HCBBS Forum
19. In MTO product gas, what causes an increase in medium-aldehyde compounds, and how should it be adjusted? - HCBBS Forum
20. Three books on distillation design and production control - HCBBS Forum
21. What is the formula for calculating the change in pressure with temperature when a closed container is filled with liquid? - HCBBS Forum
22. [Daily Question] Basic Process Knowledge (True/False Questions) 20190902 - HCBBS Forum
23. Why does the exhaust from a chloromethane vaporizer appear green? - HCBBS Forum
24. Issues regarding the insulation and temperature maintenance of styrene storage tanks - HCBBS Forum
25. Hydrocyanic acid series products - HCBBS Forum
26. Why are explosion vents installed on the exhaust pipelines of environmental protection equipment - HCBBS Forum
27. Sharing of pipeline numbering and labeling rules. - HCBBS Forum
28. The gas exiting the safety valve is dehydrogenated of H2S. - HCBBS Forum
29. For the first start-up, the purge flow rate must be at least 20, and the washing flow rate must be at least 1.5 m/s. How is this flow rate measured? - HCBBS Forum
30. I need help with questions regarding the cost estimation in chemical engineering - HCBBS Forum
31. Hydrogen and chlorine pipelines must use double-headed bolts - HCBBS Forum
32. [Daily Question] Basic Process Knowledge (True/False) 20190524 - HCBBS Forum
33. Requirements for weld spacing - HCBBS Forum
34. [Daily Question] Basic Process Knowledge (True/False Questions) 20190723 - HCBBS Forum
35. For a pressure vessel at normal pressure that contains Class A flammable materials, are there any special procedures required for such a vessel? - HCBBS Forum
36. Under what circumstances are the natural gas vent pipes at the drilling site ignited? - HCBBS Forum
37. May I ask under what circumstances is it not necessary to install a fire dike? ? Especially when it comes to Class A and B liquids - HCBBS Forum
38. Regarding TSG D0001, the Technical Regulations for the Safety Inspection of Pressure Pipelines - HCBBS Forum
39. Why must gasification produce methane, rather than supplying water gas directly? - HCBBS Forum
40. Can butterfly valves be used in pipelines for transporting combustible gases? - HCBBS Forum
41. [Haichuan Eye-Opening] Environmentally friendly lamps in ancient China - HCBBS Forum
42. Is it possible to use superheated steam to heat molten salts? - HCBBS Forum
43. Some issues in the methanol distillation layout - HCBBS Forum
44. Discussion on the issue of wastewater gasification - HCBBS Forum
45. The adsorbent has absorbed 10 kg of methanol, and nitrogen is planned to be used for purging. What conditions should be controlled to use the least amount of nitrogen possible... - HCBBS Forum
46. Reflections on whether a certain material is prone to dust explosions - HCBBS Forum
47. Problem with calculating hydrogen partial pressure? Please, experts, come and help answer! - HCBBS Forum
48. Which stainless steel grade has better resistance to chloride ions? How much chloride can 304 withstand? - HCBBS Forum
49. Nolion announces acquisition of China’s leading alkyl metal producer - HCBBS Forum
50. What is the difference between structures and buildings? ? How to tell the difference? What’s your opinion on the example listed? ? - HCBBS Forum
51. Petrochemical Regulations 2018 Edition: Liquefied Hydrocarbons - HCBBS Forum
52. What is the market situation for calcium chloride solutions? - HCBBS Forum
53. [Daily Question] Basic Process Knowledge (True/False) 20190907 - HCBBS Forum
54. What software is used to create a 3D model that can also be animated? - HCBBS Forum
55. Advantages and disadvantages of adding fans to sulfur recovery exhaust gas - HCBBS Forum
56. What are the main disadvantages of using electric heating compared to steam heating for the desorption of molecular sieves? - HCBBS Forum
57. Discussion on the salt content criteria for feedwater quality in once-through boilers and DC boilers - HCBBS Forum
58. Understand flashing and dispel misconceptions about hydrophobicity - HCBBS Forum
59. Distance between liquefied hydrocarbon pump and storage tank - HCBBS Forum
60. Microgas-producing in onychomycosis - HCBBS Forum
61. Safety facilities for methyl tert-butyl ether tanks - HCBBS Forum
62. Regarding Class A intermediate warehouses in Class C workshops as specified in the Building Code - HCBBS Forum
63. I would like to ask: Anaerobic treatment of wastewater produces a small amount of methane, which mixes with other malodorous gases from the sewage treatment plant - HCBBS Forum
64. When designing the cooling side of a heat exchanger, should water flow be controlled through the inlet water or the return water? - HCBBS Forum
65. Alarm values for temperature and level of coal tar storage tanks - HCBBS Forum
66. So where is the foundation elevation indicated on the drawing? - HCBBS Forum
67. Pneumatic diaphragm pump suction height - HCBBS Forum
68. How to optimize the recovery and reuse of steam condensate - HCBBS Forum
69. Pump head - HCBBS Forum
70. The principle why dry powder and sand cannot be used to extinguish sodium chlorate fires - HCBBS Forum
71. Basic design - HCBBS Forum
72. Is there anyone expert in heat transfer calculations? A major issue regarding the calculation of heat exchange area! - HCBBS Forum
73. What type would be suitable for a gas flow meter with a range of 0-50 m3/h? - HCBBS Forum
74. Corrosion resistance of PPR pipes - HCBBS Forum
75. What to do if the cooling effect at the site is poor and there is leakage every day? - HCBBS Forum
76. [Daily Question] Basic Process Knowledge (Multiple Choice) 20191023 - HCBBS Forum
77. Dust collector selection and air volume calculation issues - HCBBS Forum
78. How is the number of saddles determined based on the specifications of a horizontal storage tank? - HCBBS Forum
79. After the outdoor ground surface is hardened, it needs to be resistant to acids and alkalis – what kind of anti-corrosion material is suitable? - HCBBS Forum
80. Is it because one has designed an engineering project that they can no longer be involved in its procurement and construction? - HCBBS Forum
81. The distillation separation problem of ethanol-water-chlorobenzene - HCBBS Forum
82. Material needs to be added during the reaction process, but what if air gets mixed in? - HCBBS Forum
83. Packing factor of structured packing - HCBBS Forum
84. Determination of the offset amount for sliding pipe supports in steam pipelines - HCBBS Forum
85. ASTM B166-2011 Chinese Version - HCBBS Forum
86. I would like to consult the experts regarding the sealing materials for hydrogen pipeline connections - HCBBS Forum
87. [Daily Question] Basic Process Knowledge (True/False Questions) 20190711 - HCBBS Forum
88. Selection of extractant - HCBBS Forum
89. explosion - HCBBS Forum
90. [Daily Question] Basic Process Knowledge (True/False) 20190502 - HCBBS Forum
91. What welding materials should be chosen for fittings made of ASTM A216 WCB material in welding processes? - HCBBS Forum
92. [Daily Question] Basic Process Knowledge (True/False Questions) 20190809 - HCBBS Forum
93. The control valves on the process flow diagram are not clearly identified; there is a diagram - HCBBS Forum
94. Do flowchart P&IDs, equipment layout diagrams, and piping layout diagrams have English abbreviations? - HCBBS Forum
95. 【Series Discussions on School Establishment, Review in HaiChuan】Responsibilities and Weightings of Establishment, Review, and Approval in Design Institutes - HCBBS Forum
96. Plate heat exchanger plate design issues - HCBBS Forum
97. Help: Is it necessary to install an on-site thermometer in epoxy storage tanks? - HCBBS Forum
98. A starting point for the production of hydrogen through the reaction of sodium with water - HCBBS Forum
99. Questions about air separation - HCBBS Forum
100. Solving the process of using maleic anhydride waste to produce fumaric acid - HCBBS Forum