English — Forum #723 (Page 319/642)

1. 【Daily Topic】【Production Version 20160324】 - HCBBS Forum
2. How can the amount of steam generated by heating and evaporating wastewater be estimated? - HCBBS Forum
3. One question per day; those who answer correctly receive 5 wealth points, and those who participate receive 2 wealth points； Question 268 - HCBBS Forum
4. Which companies are involved in the treatment of flue gases from hazardous waste incinerators? - HCBBS Forum
5. How to remove the dense Fe3O4 (irregularities) on the high-pressure sealing surface? - HCBBS Forum
6. Seek help with the selection of low-temperature valves and the choice of flange gaskets for pairing - HCBBS Forum
7. Seeking help with a welding process issue regarding C276+16Mn - HCBBS Forum
8. Is it normal for the hydrogen pipeline to have paint on its surface? - HCBBS Forum
9. Is it possible to lay nitrogen pipelines on the ground? - HCBBS Forum
10. Dear colleagues and experts, what does a certificate for an intermediate level engineer in instrumentation look like? - HCBBS Forum
11. Working late into the night; posting this as a reminder - HCBBS Forum
12. 【Daily Topic】【Production Version 20160321】 - HCBBS Forum
13. Solid waste treatment - HCBBS Forum
14. Difference between double-needle double-tube pressure gauges and double-needle double-tube differential pressure gauges - HCBBS Forum
15. How to close all layers with one click - HCBBS Forum
16. Can the design pressure of a container be determined based on the hydrostatic pressure? - HCBBS Forum
17. Issues regarding the level gauge settings on the same device - HCBBS Forum
18. Control of phosphates and carbonates - HCBBS Forum
19. Which are the reputable domestic companies that produce high-pressure reciprocating pumps? - HCBBS Forum
20. Pipeline flow rate - HCBBS Forum
21. honeywell pks - HCBBS Forum
22. Questions regarding pipeline flaw detection - HCBBS Forum
23. I’m seeking advice from everyone – are there any good methods for dealing with pipeline vibration in reciprocating pumps? - HCBBS Forum
24. Purify low-methane parking - HCBBS Forum
25. Building pipeline connection methods - HCBBS Forum
26. Water purification agent polyaluminum - HCBBS Forum
27. Regarding instrument drawings, interlock diagrams, and other design drawings - HCBBS Forum
28. What should I do if QQ quick login doesn’t work? - HCBBS Forum
29. One Question per Day on Synthetic Ammonia (Series 46) - HCBBS Forum
30. Materials related to the operation and maintenance of ground torches - HCBBS Forum
31. What is the specific difference between the compactness and sealing performance of pressure vessels? - HCBBS Forum
32. First-hand accounts of how engineering and technical personnel escaped poverty quickly - HCBBS Forum
33. 【Weekly Topic】【 HVAC Version 20160316】 - HCBBS Forum
34. Deionized water; there is a carbon remover behind the cation exchange column. But what if the carbon removal effect is not good? - HCBBS Forum
35. May I ask where exactly the flexible connectors for the pump inlet and outlet are installed? - HCBBS Forum
36. Spectrophotometer for the determination of total nitrogen content in water - HCBBS Forum
37. 【Daily Topic】【Electrical Edition 20160325】 - HCBBS Forum
38. 【Joint Study*】【Civil Engineering Version 20160329】 - HCBBS Forum
39. 【Daily Question】 Hydrogenation Sector 2016 03 18 Multiple Choice - HCBBS Forum
40. Which one has more severe cavitation, an axial flow pump or a centrifugal pump? I don’t quite understand it; I’m seeking help from the experts here. - HCBBS Forum
41. How to remove impurities from products - HCBBS Forum
42. What is the best way to handle vacuum formation on the top of a storage tank? - HCBBS Forum
43. Regarding the methanol discharge from the methanol washing system, the replacement plan - HCBBS Forum
44. 【Daily Question】3.23 Multiple-choice Question: The main hazards caused by the direct starting of a three-phase asynchronous motor refer to ( ). - HCBBS Forum
45. Issues with the explosion protection rating of thermocouples? - HCBBS Forum
46. Can caustic soda and lime be used together in acid-base neutralization? - HCBBS Forum
47. VPSA oxygen separation system, pipeline pressure testing - HCBBS Forum
48. Discussion on post prefix classification - HCBBS Forum
49. Cascade control problem - HCBBS Forum
50. In Aspen8.8, how to establish an extractive distillation process - HCBBS Forum
51. Seeking assistance in purchasing auxiliary materials for wet production - HCBBS Forum
52. Order No. 40 of the General Administration – “Interim Provisions on the Supervision and Management of Major Hazardous Chemicals” - HCBBS Forum
53. What is the main function of the stripping steam in the hydrogen sulfide stripping tower? - HCBBS Forum
54. Pre-sulfurization of hydrofining catalysts - HCBBS Forum
55. Oil leakage from the weld occurs during the oil cloud process - HCBBS Forum
56. Y-joints and T-joints - HCBBS Forum
57. How should the pressure rating be selected for mechanical seal selection? - HCBBS Forum
58. Lug-type butterfly valve connection issues - HCBBS Forum
59. How to choose a check valve for pipes at 0.04 MPa - HCBBS Forum
60. Seek help in analyzing the spectral characteristics of pipeline stress - HCBBS Forum
61. 【Daily Question】Chemical Engineering Principles 343: Thermal Equipment (March 19) - HCBBS Forum
62. What is a good choice for a level gauge to measure bromine levels? - HCBBS Forum
63. Handling pump cavitation - HCBBS Forum
64. Dichloromethane - HCBBS Forum
65. (Weekly Topic) Is it feasible to publish a series on ‘History’s Today’ accidents (4th week of March)? - HCBBS Forum
66. The status of biogas resources in China - HCBBS Forum
67. Is the distance between the fire dike and the outer wall of the tank half of the height of the tallest tank, or should the height of the tank foundation also be taken into account? - HCBBS Forum
68. Reasons for negative pressure in the flash tower - HCBBS Forum
69. Don’t factories basically use float level gauges anymore? - HCBBS Forum
70. Control and adjustment of product quality in atmospheric and vacuum distillation units - HCBBS Forum
71. 【Episode 3 of the 2016 Family Debate Series】Should one have private money? - HCBBS Forum
72. Propylene content in syngas from a fixed-bed reactor - HCBBS Forum
73. Allowable stress of 17-4PH material - HCBBS Forum
74. Synthetic ammonia question bank - HCBBS Forum
75. Selection of drain valves - HCBBS Forum
76. Compulsory inspection of pressure gauges - HCBBS Forum
77. Sealing test of the combined soft packing for water pumps - HCBBS Forum
78. Could you please advise on how to solve swaged (2") meter run? - HCBBS Forum
79. Sulfur Daily Question, April 1------Earn 5 wealth points for participation, 10 wealth points for correct answers - HCBBS Forum
80. Candidates who took the 2015 First-Class Constructor exam – do they still need to go through a qualification review if they take the exam again in 2016? - HCBBS Forum
81. Insulation and heating for magnetic flap level gauges - HCBBS Forum
82. What are the factors that affect the outlet temperature of the burner cooling water in GE gasification technology? - HCBBS Forum
83. [Video] AR-MAX1 3D animation by MAN Turbo - HCBBS Forum
84. 【Daily Topic】【Electrical Edition 20160328】 - HCBBS Forum
85. Angle steel L90x8/-140 – what does this “-140” mean? - HCBBS Forum
86. 【Joint Study*】【Electrical Version 20160317】 - HCBBS Forum
87. May I ask, does the calculation of the weir plate height and dimensions in a three-phase separator fall under mechanical engineering calculations or process engineering calculations? - HCBBS Forum
88. ASME pressure vessel impact issues - HCBBS Forum
89. Major 2014, 6:10 p.m. – Regarding strainers - HCBBS Forum
90. UPS and EPS? - HCBBS Forum
91. Intrinsic safety system issues - HCBBS Forum
92. Regarding the issue of oil and gas recovery - HCBBS Forum
93. Photochemical reactor - HCBBS Forum
94. What is the gas supply system in a catalytic cracking regenerator? - HCBBS Forum
95. Is it necessary to install a demister or mist trap in the separator? - HCBBS Forum
96. Sign-in record post from March 24, 2016 - HCBBS Forum
97. Does anyone know what property methods are used for the heat exchange section in medium-pressure methanol synthesis at 11 Mpa? - HCBBS Forum
98. 【Joint Study*】【Civil Engineering Version 20160318】 - HCBBS Forum
99. What is the status of the Training Center of the China National Institute of Standardization? - HCBBS Forum
100. Understanding of the regulations - HCBBS Forum