English — Forum #337 (Page 120/163)

1. Why does the high-pressure nitrogen cooler not frost up when the cryogenic tank is cooled by liquid nitrogen? - HCBBS Forum
2. Process for producing hydrochloric acid and silicon dioxide by washing polysilicon waste gas with water - HCBBS Forum
3. 【HVAC Version】Daily Question 20180211 - HCBBS Forum
4. Basic Process Knowledge (Multiple Choice) 20180427 - HCBBS Forum
5. What are the common problems that occur in heat transfer oil furnaces during operation? - HCBBS Forum
6. Sir, come in and take a look – what material should be used for this type of application? ? ? - HCBBS Forum
7. Inquiry about crystallization separation equipment - HCBBS Forum
8. What impurities are prohibited from entering the hydrogen purification unit? - HCBBS Forum
9. Have the pressure vessel design reviewers of the Rong Biao Wei been removed? - HCBBS Forum
10. Fundamentals of Manufacturing Processes (Multiple Choice) 201800302 - HCBBS Forum
11. 【Electrical Version】Daily Question 20180529 - HCBBS Forum
12. Help! ! Regarding the removal of trace water from dichloromethane - HCBBS Forum
13. 【Daily Question】Pump Equipment Technical Exchange Edition 20180215 - HCBBS Forum
14. Issues related to the installation of shut-off valves for control valves in hydrogen-rich two-phase fluids under high pressure; details are provided in the main text - HCBBS Forum
15. What is a low-temperature condensation system? - HCBBS Forum
16. 58% sulfuric acid flow rate - HCBBS Forum
17. Film evaporator and falling film evaporator - HCBBS Forum
18. Analysis of the causes of steam water hammer - HCBBS Forum
19. Regarding the issue of connecting a centrifugal pump (at the front) in series with a plunger pump (at the back) - HCBBS Forum
20. Basic Process Knowledge (Multiple Choice) 20180211 - HCBBS Forum
21. How long does it take for a newly built refinery unit to start operating after delivery? - HCBBS Forum
22. The phenomenon of vacuum formation in the bottom pump during normal production - HCBBS Forum
23. The combination of two valves at the pump outlet in the one standby one in use mode is open for active discussion by everyone. - HCBBS Forum
24. 【HVAC Version】Daily Question 20180221 - HCBBS Forum
25. Should I change jobs after the New Year, or stay where I am? - HCBBS Forum
26. 【HVAC Version】Daily Question 20180430 - HCBBS Forum
27. 【HVAC Version】Daily Question 20180208 - HCBBS Forum
28. How to reduce metal ions in lithium fluoride - HCBBS Forum
29. 【HVAC Version】Daily Question 20180218 - HCBBS Forum
30. What is the maximum flow rate for a DN80 medium-pressure steam pipe at 1.5 MPa? - HCBBS Forum
31. 【Mechanical Equipment Technology Edition】Daily Question 201805021: Common Faults of Screw Refrigeration Compressors (5) - HCBBS Forum
32. Calculation of the amount of natural gas required to produce one ton of acetylene - HCBBS Forum
33. Can reprocessed oil be used as a seal oil in place of the one used for starting up the catalytic cracking hot oil pump? - HCBBS Forum
34. Buried tanks: Why fill them with sand? - HCBBS Forum
35. 【HVAC Version】Daily Question 20180504 - HCBBS Forum
36. Basic Process Knowledge (Multiple Choice) 20180208 - HCBBS Forum
37. How to remove scale from plate heat exchangers - HCBBS Forum
38. Fundamentals of Manufacturing Processes (Multiple Choice) 20180516 - HCBBS Forum
39. Association textbook, page 94, Example 2.4.2-4 - HCBBS Forum
40. 【HVAC Version】Daily Question 20180411 - HCBBS Forum
41. Do basic groups tend to bind with carboxylic acid-containing organic compounds? What substance is it combined to form? - HCBBS Forum
42. Original content, just released: «What exactly is checked during an on-site safety inspection?» 》 - HCBBS Forum
43. Request the floor plan for the spraying workshop - HCBBS Forum
44. Removal of the finished styrene polymerization inhibitor - HCBBS Forum
45. Freezing prevention issues for ammonia storage tanks in winter - HCBBS Forum
46. When comparing Shanghai Huaxi, Sichuan Yalian High-Tech, and Sichuan Tianyi in terms of PSA technology for hydrogen production from methanol, what are their respective advantages and disadvantages? - HCBBS Forum
47. What is mixed with sodium hypochlorite to make household bleaching solution? - HCBBS Forum
48. Dehydrogenation of isopropanol to propylene - HCBBS Forum
49. Regarding the use of inplant software - HCBBS Forum
50. Outlet pressure of the make-up water pump and inlet pressure of the circulation pump - HCBBS Forum
51. Are there any requirements regarding the distance between factories or buildings and roads? - HCBBS Forum
52. Structure of the flare liquid separation tank and flare water seal tank? - HCBBS Forum
53. Need help with a standard - HCBBS Forum
54. Can the fire roads in a factory complex be blocked? - HCBBS Forum
55. Same as above. Investing in a chemical plant in Thailand – which design codes, construction regulations, petrochemical regulations, or ASME standards should be followed? Has anyone done this before? - HCBBS Forum
56. Pressure used for pressure testing pipelines - HCBBS Forum
57. 【HVAC Version】Daily Question 20180307 - HCBBS Forum
58. 【HVAC Version】Daily Question 20180413 - HCBBS Forum
59. What is the difference between a fixed ball and a floating ball in a ball valve? ? - HCBBS Forum
60. Zinc electrolytic acid-permeable baking plate - HCBBS Forum
61. [Mobile Equipment Technology Edition] Daily Question 20180207 Common faults in refrigeration systems (9.2) - HCBBS Forum
62. Fundamentals of Processing Technology (Multiple Choice) 20180406 - HCBBS Forum
63. The reboiler outlet contains steam rather than condensate - HCBBS Forum
64. What does s 45 u mean? - HCBBS Forum
65. Basic Process Knowledge (Multiple Choice) 20180409 - HCBBS Forum
66. Request Aspen simulation for styrene-butadiene rubber process - HCBBS Forum
67. Regarding the issue of steam condensation - HCBBS Forum
68. How to determine the compressed air flow rate - HCBBS Forum
69. 【HVAC Version】Daily Question 20180605 - HCBBS Forum
70. Spray drying system - HCBBS Forum
71. 5% hydrochloric acid concentrated to 21% - HCBBS Forum
72. Cleanroom engineering - HCBBS Forum
73. If droplets are found on the flange of the medium-pressure steam inlet check valve in the diesel hydrogenation turbine, does this mean it can be assumed that the valve cover is about to leak? - HCBBS Forum
74. Calculation of filter elements in natural gas processing plants - HCBBS Forum
75. Black rod of unknown origin; seeking advice from experts - HCBBS Forum
76. Discussion on the design approach for control valve, flow meter, and valve assembly - HCBBS Forum
77. 【HVAC Version】Daily Question 20180126 - HCBBS Forum
78. Add chemicals to the water pump to prevent cavitation? - HCBBS Forum
79. How is the size of the furnace body for the TO combustion furnace designed? - HCBBS Forum
80. Pipe flow rate of DN25 - HCBBS Forum
81. HTRI calculation passed—why not the schematic? - HCBBS Forum
82. Material sticking to the wall - HCBBS Forum
83. 【HVAC Version】Daily Question 20180408 - HCBBS Forum
84. Activated carbon - HCBBS Forum
85. Basic Process Knowledge (Multiple Choice) 20180605 - HCBBS Forum
86. 【HVAC Version】Daily Question 20171226 - HCBBS Forum
87. 【HVAC Version】Daily Question 20171213 - HCBBS Forum
88. Can process waste gas be discharged through the boiler chimney? - HCBBS Forum
89. Notice to all moderators, experts, and technical professionals in the process division regarding their salary payments for November - HCBBS Forum
90. Production process of m-aminobenzoyl aniline - HCBBS Forum
91. Can SPLM 2012 not generate a machine ID? ! - HCBBS Forum
92. Specifications for the content of metal ions in the lean methanol solution from low-temperature methanol washing - HCBBS Forum
93. Help needed - HCBBS Forum
94. 9.26 Daily Question – Fill-in-the-blank; a reward is given for every correct answer - HCBBS Forum
95. [Mechanical Equipment Technology Edition] Daily Question 20171209: Refrigeration Equipment (6) - HCBBS Forum
96. How to remove trace amounts of hydrogen sulfide from naphtha - HCBBS Forum
97. Compressor vent line. - HCBBS Forum
98. Design environment pressure - HCBBS Forum
99. Temperature distribution of the protective nitrogen in the liquid nitrogen quench tank - HCBBS Forum
100. Several issues in the design of liquid nitrogen pipelines - HCBBS Forum