English — Forum #337 (Page 77/163)

1. Dimethyl ether co-production of sodium methoxide - HCBBS Forum
2. Are the sections on occupational safety and health and occupational diseases considered one single section? - HCBBS Forum
3. Should I go for air separation or desulfurization and denitration? - HCBBS Forum
4. Purification of plant extracts using multiple macroporous resin columns in series - HCBBS Forum
5. Questions regarding the design temperature and pressure on the high-pressure side of ammonia refrigeration systems – seeking assistance - HCBBS Forum
6. A problem with an evaporator - HCBBS Forum
7. What is the difference between the inner tube and the outer tube? Is the steam in the inner tube different from that in the outer tube? The piping work for the inner pipes is handled by the piping specialty, while that for the outer pipes is done by the thermal engineering specialty. Why isn’t this work assigned to just one specialty? - HCBBS Forum
8. Are there any requirements for the length of a tubular heat exchanger? How long can it be at most? Looking for relevant information - HCBBS Forum
9. Burnt out in the pyrolysis furnace? - HCBBS Forum
10. Where can I buy the \"Economic Evaluation Parameters for Investment Projects of China National Petroleum Corporation (2018)\"? - HCBBS Forum
11. [Daily Question] Basic Process Knowledge (True/False Questions) 20190729 - HCBBS Forum
12. What does this diagram mean? ? - HCBBS Forum
13. Specifications of intermediate water tank - HCBBS Forum
14. In chemical engineering design institutes, thermal engineers also draw pipelines; which field has more prospects, thermal engineering or piping work? - HCBBS Forum
15. [Daily Question] Basic Process Knowledge (True/False) 20190430 - HCBBS Forum
16. What are the differences between chemical operation manuals and operation procedures? - HCBBS Forum
17. 【Identify the Process from the Image】What is the purpose of introducing nitrogen into this electric heater? - HCBBS Forum
18. [Daily Question] Basic Process Knowledge (True/False) 20190717 - HCBBS Forum
19. I would like to ask about the use of small amounts of dilute nitric acid in the production of caprolactam - HCBBS Forum
20. Issues with duplex stainless steel 2205? - HCBBS Forum
21. Feasibility Study Report on the Glyoxylate Project - HCBBS Forum
22. What are the reasons for high carbon dioxide levels in the mother liquor system? - HCBBS Forum
23. Are the inlet and outlet pipes of the steam pipeline safety valve designed to prevent burns? - HCBBS Forum
24. Help: Chinese version of ISO 9692-1-2013 - HCBBS Forum
25. How to remove unpleasant odors at the ammonia loading site? - HCBBS Forum
26. According to Article 3 in point (4) of the explanation for clause 3.1.1, oxidizers that do not fall under Category A are secondary oxidizers, that is, non-strong oxidizers - HCBBS Forum
27. [Daily Question] Basic Process Knowledge (True/False) 20190626 - HCBBS Forum
28. How is the fire separation distance determined between Class A installations and ordinary Class V evaporator equipment areas? It’s not a combined unit; it is divided into... - HCBBS Forum
29. Problems with the installation of inlet and outlet valves on heat exchangers - HCBBS Forum
30. [Daily Question] Basic Process Knowledge (True/False) 20190608 - HCBBS Forum
31. What type of throttling device is this? - HCBBS Forum
32. Regarding the use of nitrogen blanketing for Class A liquid storage tanks, is there any specification regarding the volume of the gas space at the top of the tank? That is, what liquid level should be maintained normally... - HCBBS Forum
33. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190918 - HCBBS Forum
34. Pneumatically controlled automatic valve - HCBBS Forum
35. How are oil and water separated in a reflux tank? - HCBBS Forum
36. For flammable and explosive production equipment, is it necessary to use nitrogen sealing for all devices during normal operation? - HCBBS Forum
37. Does the defoaming blade need to be placed above the liquid surface? Or is there a specific height requirement from the liquid surface? - HCBBS Forum
38. Low-temperature Claus process for sulfur recovery - HCBBS Forum
39. [Daily Question] Basic Process Knowledge (True/False) 20190821 - HCBBS Forum
40. The issue of setting up maintenance areas when arranging equipment! - HCBBS Forum
41. [Daily Question] Basic Process Knowledge (True/False) 20190612 - HCBBS Forum
42. How to paint in high temperatures - HCBBS Forum
43. May I ask a question? - HCBBS Forum
44. Liquid hammer phenomenon? - HCBBS Forum
45. I need an expert to help identify what material the following alloy grade is made of - HCBBS Forum
46. How to calculate the safety valve for high-temperature hot water pipes? I would appreciate some guidance from those with experience! - HCBBS Forum
47. Corrosion protection of buried pipelines - HCBBS Forum
48. The normal pressure in the heat exchanger during steam purging is 0.1 MPA, but when the outlet valve is closed, the pressure can reach 0.3 MPA.... - HCBBS Forum
49. Has anyone designed or used spray drying equipment? - HCBBS Forum
50. Can't float level gauges be used in Class A and B liquid storage tanks? - HCBBS Forum
51. Which code specifies the location of a firewall between the transformer room and the distribution room? - HCBBS Forum
52. I hope the experts here can offer some guidance - HCBBS Forum
53. Differences between GB5044 and hgb20660 - HCBBS Forum
54. The diameter of the pump suction pipe should not be too large - HCBBS Forum
55. Question: Selection of standards for pressure vessel supports - HCBBS Forum
56. Focus on monitoring hazardous processes - HCBBS Forum
57. Determination of operating pressure in pipeline data sheets - HCBBS Forum
58. Why do design institutes these days insist on compliance with recommended standards? - HCBBS Forum
59. [Daily Question] Basic Process Knowledge (True/False) 20190801 - HCBBS Forum
60. Which materials require a heating expansion safety valve? - HCBBS Forum
61. Which type of heat exchanger is suitable for cooling gas? ? Isn’t it very difficult to cool gases? - HCBBS Forum
62. Rainwater drainage method - HCBBS Forum
63. Issues regarding the dimensioning of the plant layout plan - HCBBS Forum
64. What should be done regarding the accident emergency pool? - HCBBS Forum
65. Questions about design specifications - HCBBS Forum
66. [Daily Question] Basic Process Knowledge (True/False) 20190804 - HCBBS Forum
67. [Daily Question] Basic Process Knowledge (True/False Questions) 20190822 - HCBBS Forum
68. What is the fire hazard classification for 50% hydrogen peroxide, and what are the criteria used for such classification? - HCBBS Forum
69. Liquid level and circulation rate - HCBBS Forum
70. The Dilemma of Private Enterprises in Titanium Welded Tubes - HCBBS Forum
71. What type of heat exchanger is used for suspensions containing small solid particles? - HCBBS Forum
72. What causes the yellowing of finished glyoxal products? - HCBBS Forum
73. [Daily Question] Basic Process Knowledge (True/False) 20190704 - HCBBS Forum
74. Thoughts on Reading “Chemical Process Design” IV —— Heat Exchanger Networks - HCBBS Forum
75. Will the pump experience cavitation under these operating conditions, experts? - HCBBS Forum
76. Heat transfer coefficient of gas-to-gas heat exchange - HCBBS Forum
77. I would like to ask what the current market price of alkylbenzenes is? What was the average price in 2019? - HCBBS Forum
78. Since many interfaces on the pilot plant equipment require hoses, what type of connectors would be suitable? - HCBBS Forum
79. A question regarding major hazard sources, Table 2, W5.1 - HCBBS Forum
80. Vacuum concentration - HCBBS Forum
81. Problems with large fillet welds in storage tanks - HCBBS Forum
82. [Daily Question] Basic Process Knowledge (True/False) 20190613 - HCBBS Forum
83. Selection of a pilot distillation column - HCBBS Forum
84. [Daily Question] Basic Process Knowledge (True/False) 20190522 - HCBBS Forum
85. Discussion on plant buildings and equipment - HCBBS Forum
86. Is it easy to make explosion-proof distribution boxes? Is ventilation to maintain positive pressure needed? - HCBBS Forum
87. Is it safe to heat toluene to around 55°C? Can it run for a long time - HCBBS Forum
88. What causes abnormal noises in the return water pipeline of the heat exchanger’s circulating water system? - HCBBS Forum
89. [Daily Question] Basic Process Knowledge (True/False Questions) 20190523 - HCBBS Forum
90. Adiponitrile price - HCBBS Forum
91. [Daily Question] Basic Process Knowledge (True/False) 20190812 - HCBBS Forum
92. Calculation of the transmembrane pressure difference for MBR membranes - HCBBS Forum
93. Formulas for calculating the liquid level and volume in horizontal tanks - HCBBS Forum
94. Melting heat of V2O5 - HCBBS Forum
95. [Daily Question] Basic Process Knowledge (True/False) 20190831 - HCBBS Forum
96. Applications of triethyl orthoformate - HCBBS Forum
97. What is the molecular weight distribution and approximate molecular weight of polypropylene? - HCBBS Forum
98. Issues with the refrigerant process layout in vertical coolers - HCBBS Forum
99. [Daily Question] Basic Process Knowledge (True/False Questions) 20190610 - HCBBS Forum
100. I wonder why the section for standard AC is gone - HCBBS Forum