English — Forum #723 (Page 519/642)

1. Instrument Electrical Repair Technician - HCBBS Forum
2. What is the typical concentration of VOCs in the foul gases from wastewater treatment plants? - HCBBS Forum
3. How to lower the boiling points of toluene, acetic acid, and butanol - HCBBS Forum
4. Why can’t some blocks be moved when stretched? - HCBBS Forum
5. How to determine the quality of water entering an reverse osmosis membrane? - HCBBS Forum
6. The hydroprocessing unit has an absorption and stabilization section; the crude naphtha product contains a high level of hydrogen sulfide - HCBBS Forum
7. One Question per Day, September 14, 2015 - HCBBS Forum
8. In petrochemical regulations, how should the fire separation distance for liquid ammonia storage tanks be determined? - HCBBS Forum
9. Where to buy brass pipes - HCBBS Forum
10. Equipment for purchase! ! ! - HCBBS Forum
11. Selection of drip pipeline flow meter - HCBBS Forum
12. Definition of oil and gas tank farms - HCBBS Forum
13. 【Daily Question】Question from Issue 20150917 - HCBBS Forum
14. Hydrogen supply for hydrogen production plant - HCBBS Forum
15. When crystallizing PEG products, a large amount of buildup forms at the bottom of the crystallization tank, blocking the valves - HCBBS Forum
16. High-pressure float level gauge - HCBBS Forum
17. Those who are proficient in MECS waste acid regeneration technology, please come in - HCBBS Forum
18. How to view sleeping at work - HCBBS Forum
19. How to calculate the stiffness of a pipe - HCBBS Forum
20. Installation of safety valves - HCBBS Forum
21. What are the requirements for hydraulic cylinders when various valves in the coal pulverization pressurized gasification coal lock operate? - HCBBS Forum
22. The difference between HCV and HV - HCBBS Forum
23. Solving for the liquid level in an ammonia tank using a differential pressure transmitter - HCBBS Forum
24. I still can’t figure out the difference in thickness between the tube sheet and the tube sheet flange - HCBBS Forum
25. When in a vacuum state, is it necessary to perform calculations regarding the use of container flanges for pressure vessels? - HCBBS Forum
26. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 310 - HCBBS Forum
27. How to conduct individual unit tests before putting sewage treatment facilities into operation - HCBBS Forum
28. Fan Bingbing’s family background is quite remarkable! - HCBBS Forum
29. 【Daily Question】Wastewater Knowledge - 9.23 (2 points for a reply, 4 points for a correct answer) - HCBBS Forum
30. Heat loss settings in Aspen - HCBBS Forum
31. Does the DN100 straight-through single-seat valve allow only a differential pressure of 120 kPa? - HCBBS Forum
32. Big news! The industrialized technology for co-processing extended petroleum and kerosene has passed **evaluation** - HCBBS Forum
33. High-pressure magnetic flap level gauge - HCBBS Forum
34. wonderware intouch 2014 patch01 - HCBBS Forum
35. Confusion regarding dew point (condensation) and partial pressure - HCBBS Forum
36. How does a reaction turbine expand in the rotor blade cascade? What is the principle of expansion? - HCBBS Forum
37. One post per day on occupational health - HCBBS Forum
38. Regarding the power plant bidding plan - HCBBS Forum
39. Issues with unboxing Shengyu compressors - HCBBS Forum
40. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 178 - HCBBS Forum
41. Applications of differential pressure transmitters in oil depot metering - HCBBS Forum
42. Practices in food-grade workshops - HCBBS Forum
43. Comparison of the advantages and disadvantages of the \"washing method\" and \"pressure swing adsorption method\" for concentrating and purifying biogas to produce biomethane - HCBBS Forum
44. Problems with the four lanes of tracks - HCBBS Forum
45. The issue of the distillation tower having a smaller diameter at the top and a larger diameter at the bottom - HCBBS Forum
46. Selection of steel material for the blind flange at the liquid level gauge port of natural gas pipeline separators - HCBBS Forum
47. One question per day to learn about occupational health - HCBBS Forum
48. Does the MDEA decarburization equipment require post-weld heat treatment? - HCBBS Forum
49. Seven Philosophies of Cats - HCBBS Forum
50. On the design of jacketed containers - HCBBS Forum
51. Chemical Engineering in Daily Life – Question 71: Is it correct to add alkaline powder to porridge? - HCBBS Forum
52. Toluene separation - HCBBS Forum
53. In saltwater, what is brine? What is brine? - HCBBS Forum
54. Are you all interested in having wedding anniversaries? - HCBBS Forum
55. How much do you know about the Flash player? - HCBBS Forum
56. Sign-in record post from September 15, 2015 - HCBBS Forum
57. About entrepreneurship - HCBBS Forum
58. Standardization of overhead cranes in liquid chlorine warehouses - HCBBS Forum
59. What is the future of coal chemical industry? - HCBBS Forum
60. Calculation of bottom feed gas volume in atmospheric and vacuum distillation units? ? Urgent help needed! ! - HCBBS Forum
61. Are underground oil storage tanks considered pressure vessels? - HCBBS Forum
62. Is it possible to detect the content of sublimated sulfur in the flue gas from sulfur incineration furnaces? - HCBBS Forum
63. Backfire occurs in the burner during shutdown - HCBBS Forum
64. Which design institutes have worked on the production of MTP from 1 million tons equivalent of methanol? - HCBBS Forum
65. What are the main reactions in F-T synthesis in coal indirect liquefaction? - HCBBS Forum
66. Please recommend several manufacturers of olefin aromatization catalysts - HCBBS Forum
67. Issues regarding turbine-driven centrifugal compressors - HCBBS Forum
68. Seeking advice on the issue of side extraction of butadiene - HCBBS Forum
69. One post per day on occupational health - HCBBS Forum
70. Yunnan Travel Sharing - HCBBS Forum
71. The issue of the amount of crude argon gas - HCBBS Forum
72. Principles for selecting corrosion/abrasion monitoring points on in-service process pipelines - HCBBS Forum
73. 【College Activities】023+Unforgettable School’s Braised Pork+*anpangpang - HCBBS Forum
74. What are some quick and simple methods for treating wastewater with high COD levels? - HCBBS Forum
75. Should I change jobs? Which field has a promising future? - HCBBS Forum
76. Transmitter negative drift - HCBBS Forum
77. Regarding high-frequency reciprocating testing machines - HCBBS Forum
78. Determination of gas composition in the acid water tank roof - HCBBS Forum
79. Environmental Protection Daily Question 9.13: Participate for prizes, and extra rewards for correct answers! - HCBBS Forum
80. How to control two frequency converters with a 4–20mA signal - HCBBS Forum
81. Reaction temperature - HCBBS Forum
82. cladding - HCBBS Forum
83. Are there significant differences in the analysis results between domestic fluorescent sulfur and imported fluorescent sulfur? ? - HCBBS Forum
84. Mid-Autumn Festival benefits - HCBBS Forum
85. Environmental Protection Daily Question 9.12: Participation is rewarded, and an additional prize is given for correct answers! - HCBBS Forum
86. What issues should be considered in crane design? - HCBBS Forum
87. What about the profit calculation for upgrading gasoline from National IV to National V? Could National V gasoline become a new source of profit growth? - HCBBS Forum
88. Welding issues after surfacing heat treatment - HCBBS Forum
89. In the AO treatment process, large amounts of duckweed grow in the anoxic tank - HCBBS Forum
90. For double-cone rotary vacuum dryers, how should the solvent that has been dried and evaporated be handled? - HCBBS Forum
91. How to check pipe supports? - HCBBS Forum
92. Regarding the head capacity of centrifugal pumps - HCBBS Forum
93. What happened to the online rewards? - HCBBS Forum
94. Did it become expired by becoming a regular member instead of a team member? - HCBBS Forum
95. Reference books on evaporation crystallization - HCBBS Forum
96. What exactly is being removed in denitrification? - HCBBS Forum
97. Does anyone know in what situations long-neck flanges and integral flanges can be used? - HCBBS Forum
98. Discuss the factors that affect the vacuum in steam turbines. - HCBBS Forum
99. Making gas from coke with pure oxygen – those who are experienced in this area, feel free to share their insights! - HCBBS Forum
100. 【Daily Question】Question from Issue 20150918 - HCBBS Forum