English — Forum #337 (Page 111/163)

1. Hydrogenation of coal tar; Type 2 reprocessed coal tar, with a initial boiling point of 200 and a final boiling point of 365. However, it is red in color – why is that? - HCBBS Forum
2. Problems with the tube sheet and vessel flanges of U-tube heat exchangers - HCBBS Forum
3. 【HVAC Version】Daily Question 20180204 - HCBBS Forum
4. What factors affect the pressure drop of heat exchangers? - HCBBS Forum
5. 【HVAC Version】Daily Question 20180306 - HCBBS Forum
6. PSA analysis gas - HCBBS Forum
7. Basic Process Knowledge (Multiple Choice) 20180521 - HCBBS Forum
8. When purchasing steel plates, should I go by weight or thickness? How can I get steel plates of the thickness I want? - HCBBS Forum
9. The effect of propane in low-temperature alkylsulfonation - HCBBS Forum
10. What about the changes after steam pressure reduction? - HCBBS Forum
11. The flange wall thickness is slightly greater than that of the pipe wall; special attention must be paid to this during welding - HCBBS Forum
12. 【Appreciation by Experts】Southern Song Dynasty, Xu Yugong’s “Plum Blossoms and Bamboo in the Snow” – Join the voting for Haichuan’s Top 10 Members - HCBBS Forum
13. 【HVAC Version】Daily Question 20180203 - HCBBS Forum
14. Issues related to the calculation of steam condensation - HCBBS Forum
15. 【HVAC Version】Daily Question 20180402 - HCBBS Forum
16. The process of water evaporation from flue gas - HCBBS Forum
17. Fundamentals of Manufacturing Processes (Multiple Choice) 20180410 - HCBBS Forum
18. Fundamentals of Processing Technology (Multiple Choice) 20180405 - HCBBS Forum
19. MSDS for ammonium bisulfate - HCBBS Forum
20. 【HVAC Version】Daily Question 20180508 - HCBBS Forum
21. How to determine the diameter of cross-line pipes - HCBBS Forum
22. 【HVAC Version】Daily Question 20180505 - HCBBS Forum
23. Data sheet for gear pump - HCBBS Forum
24. What material is generally used for pipes in frozen saline? What should be the inlet and return water temperatures for frozen saline? - HCBBS Forum
25. For desulfurization wastewater containing lime sludge with a solid content of 4% and chloride ions at 20,000 ppm, what type of valve is suitable? - HCBBS Forum
26. Is it possible to add a pressure guide tube behind the explosion-proof membrane? Are there any installation standards? - HCBBS Forum
27. At the outlet of a diaphragm compressor, can the outlet buffer tank be replaced by increasing the diameter of the outlet pipeline? - HCBBS Forum
28. Process package depth - HCBBS Forum
29. Document No. 32014-68 issued by the Chief Safety Officer: Liquid level in tank areas - HCBBS Forum
30. Manufacturers for opening holes under pressure - HCBBS Forum
31. Heat exchanger calculation - HCBBS Forum
32. Catalyst loading is carried out at the beginning of operation. Depending on the size of the plant, it is necessary to determine how to control the amount of catalyst stored in the coking tank, the secondary reactor, and the settler – and roughly how much catalyst should be loaded - HCBBS Forum
33. Two issues that remain unclear in the ethyl acetate solvent recovery process - HCBBS Forum
34. Will the circulating hot ethanol enter the expansion tank? - HCBBS Forum
35. Has anyone ever seen a filter installed at the outlet of a centrifugal pump? - HCBBS Forum
36. Collection of Self-Control Standards – Premium Sharing 2018 - HCBBS Forum
37. Adiabatic expansion and throttling expansion - HCBBS Forum
38. 【HVAC Version】Daily Question 20180129 - HCBBS Forum
39. How to determine the diameter of the safety valve bypass line - HCBBS Forum
40. Fundamentals of Processing Technology (Multiple Choice) 20180522 - HCBBS Forum
41. Methacraldehyde - HCBBS Forum
42. Request for legend for process piping and instrumentation diagrams - HCBBS Forum
43. [Mechanical Equipment Technology Edition] Daily Question 201805029: Refrigeration Systems – Refrigeration Parameters (3) - HCBBS Forum
44. 【HVAC Version】Daily Question 20180410 - HCBBS Forum
45. Fundamentals of Manufacturing Processes (Multiple Choice) 20180403 - HCBBS Forum
46. 【HVAC Version】Daily Question 20180507 - HCBBS Forum
47. Basic Process Knowledge (Multiple Choice) 20180525 - HCBBS Forum
48. Principles for installing steam pipeline supports - HCBBS Forum
49. 【HVAC Version】Daily Question 20180503 - HCBBS Forum
50. [Mechanical Equipment Technology Edition] Daily Question 201801030: Common Faults in Refrigeration Systems (8.6) - HCBBS Forum
51. 【HVAC Version】Daily Question 20180608 - HCBBS Forum
52. Incorrectly drawn schematic diagram - HCBBS Forum
53. Production process of solution-polymerized styrene-butadiene rubber - HCBBS Forum
54. Regarding natural gas heating - HCBBS Forum
55. Who produces DBP using non-acidic catalysts? - HCBBS Forum
56. MVR compressor: issue of converting saturated steam to superheated steam - HCBBS Forum
57. How is the total transportation cost included in the estimate calculated, and what does it cover? ? Is there an authoritative explanation? - HCBBS Forum
58. How to upload a picture? How to upload a picture from the computer desktop? - HCBBS Forum
59. 【HVAC Version】Daily Question 20180506 - HCBBS Forum
60. Can the utility station N2 be powered by plant air instead? - HCBBS Forum
61. What do the materials DIPA and S2PA used for the HBr pump in a certain process package refer to? - HCBBS Forum
62. [Mobile Equipment Technology Edition] Daily Question 20180408 Screw Refrigeration Compressor Gas Transmission Volume Adjustment Mechanism (8) - HCBBS Forum
63. Is it necessary to install an explosion-proof wall between the 15% ammonia solution tank and the building? - HCBBS Forum
64. Fundamentals of Manufacturing Processes (Multiple Choice) 20180330 - HCBBS Forum
65. Discussion on the layout principles of process pipelines - HCBBS Forum
66. The compressed air pressure is 25 MPa, there are no corrosive substances, and the pipe temperature is 55°C. How should the pipe material be selected? Is 20 carbon steel suitable? - HCBBS Forum
67. S22053 welding - HCBBS Forum
68. Design drawings for molten salt chlorination furnaces and boiling chlorination furnaces, as well as companies that manufacture related equipment - HCBBS Forum
69. How to calculate the pressure loss in a double-pipe system? ? - HCBBS Forum
70. Will mixing the same medium at different temperatures under the same pressure cause water hammer or damage to the pipelines? - HCBBS Forum
71. The inlet pressure is 10 MPa and the outlet pressure is 10.5 MPa; is it a high-pressure pump or a normal-pressure pump? - HCBBS Forum
72. What is the purpose of the small coil surrounding the gauge, such as on a pressure gauge? - HCBBS Forum
73. 【HVAC Version】Daily Question 20180406 - HCBBS Forum
74. Fundamentals of Manufacturing Processes (Multiple Choice) 20180614 - HCBBS Forum
75. Do all steam heat exchangers require the installation of steam traps, and what are the standard criteria for this? - HCBBS Forum
76. Should I make the tee myself (by digging a hole) or buy one ready-made? ? What are the advantages and disadvantages of each? - HCBBS Forum
77. Three-phase separator - HCBBS Forum
78. 200,000-ton coal tar deep processing production line. Does anyone have any relevant technical materials on this topic? Please send me some so I can study it - HCBBS Forum
79. Design of parking lot for hazardous chemicals transport vehicles - HCBBS Forum
80. Find the norm - HCBBS Forum
81. Where can I find research and development additives for samples! - HCBBS Forum
82. Are there any specialized books on specialty gases? - HCBBS Forum
83. Where are the chemical plants in China that produce brominated butyl rubber? - HCBBS Forum
84. Divide into control consultation - HCBBS Forum
85. What is the optimal temperature for dehydration of C4 mixed feedstock? - HCBBS Forum
86. Revisions to 3 energy industry standards such as NB/T 47013.2-2015 \"Non-destructive testing of pressure equipment – Part 2: Radiographic testing\"... - HCBBS Forum
87. Are there any pure substances whose liquid density is greater than their solid density, other than water? - HCBBS Forum
88. Is the process package for the newly built skid-mounted facility required to undergo design review? - HCBBS Forum
89. Problems with steam ejectors - HCBBS Forum
90. LNG cryogenic tank testing plant design - HCBBS Forum
91. [Mechanical Equipment Technology Edition] Daily Question 20180403: Gas flow regulation mechanism of screw refrigeration compressors (6) - HCBBS Forum
92. Why is it necessary to install heating in the circulating water bypass of the C4 unit cooler? - HCBBS Forum
93. Production of methyl methacrylate via a two-step process using isobutylene - HCBBS Forum
94. Install temperature measurement devices on the boiler - HCBBS Forum
95. What are the current slag removal methods for boilers in China? - HCBBS Forum
96. Buffer tank pressure control valve - HCBBS Forum
97. [Mechanical Equipment Technology Edition] Daily Question 201804028: Common Faults of Screw Refrigeration Compressors (4) - HCBBS Forum
98. 1. The discharge temperature and pressure will increase, but will the temperature drop be greater or smaller after passing through the cooling water heat exchanger? 2. Will this cause the suction temperature in the suction tank closest to the discharge end to decrease? Please help! - HCBBS Forum
99. Some questions regarding the circulating water pump; seeking answers - HCBBS Forum
100. Looking for information on sugar hydrocracking - HCBBS Forum