English — Forum #723 (Page 586/642)

1. Handling of single-column interruption accidents in circulating gas systems - HCBBS Forum
2. Calibration of the Fisher level gauge: why does the level drop from the full scale after calibration, yet the display shows an increase in level? - HCBBS Forum
3. What to do about the mushroom cloud-shaped sludge in the secondary sedimentation tank? - HCBBS Forum
4. Issues with communication between Siemens PLC and KingView - HCBBS Forum
5. “The Kaisuan Irrigation Co., Ltd. Shop” – Books and distance can truly change a person - HCBBS Forum
6. What is the impact of varying aerobic sludge concentrations in wastewater on the removal efficiency? - HCBBS Forum
7. Why are ABB’s pressure and differential pressure transmitters less used in the oil refining industry? - HCBBS Forum
8. Instrument design for Class D clean areas - HCBBS Forum
9. High-pressure gas chamber testing of valves - HCBBS Forum
10. Questions about distillation - HCBBS Forum
11. What is the current market price of high-quality industrial white arsenic? - HCBBS Forum
12. Criteria for catalyst replacement in methanol synthesis towers - HCBBS Forum
13. What coated titanium anodes are used in the etching solution recycling industry? - HCBBS Forum
14. Operation method of the monomer feeding pump (canned motor pump) - HCBBS Forum
15. NBT 47042-2014 Horizontal Containers - HCBBS Forum
16. What type of pumps are used in hydrogenation units? - HCBBS Forum
17. In Beijing, the pass rate for the chemistry and physics exam in 2014 was less than 4% - HCBBS Forum
18. There is a slight leakage from the packing of the heat transfer oil circulation pump; the oil leaks into the bearing housing. Will the heat transfer oil cause corrosion to the bearings? - HCBBS Forum
19. Piping & Stress Analysis & Sales - HCBBS Forum
20. Discussion - HCBBS Forum
21. The thick black line in the 150 allowable stress value - HCBBS Forum
22. It seems the forum has been updated today - HCBBS Forum
23. Question 5 in the morning session of the 2010 case - HCBBS Forum
24. How much do you know about the new Three Character Classic? - HCBBS Forum
25. Please let me know what effect the water level in the storage tank has on the pressure at the outlet of the centrifugal pump - HCBBS Forum
26. Residue sampler - HCBBS Forum
27. Treated by wastewater treatment plant - HCBBS Forum
28. Is the control of centrifugal compressor units driven by steam turbines achieved using DCS? - HCBBS Forum
29. Acidic water inlet parameters - HCBBS Forum
30. What is the proportion of gaseous water in the air? - HCBBS Forum
31. The relationship between the blending of vacuum residue and regenerator bleedoff - HCBBS Forum
32. For storage tanks with a height of less than 10m, can a straight ladder be used instead of a spiral ladder? Does anyone have a reference image? - HCBBS Forum
33. Technical upgrade of compressor air valves - HCBBS Forum
34. How to select flocculants for different filter presses - HCBBS Forum
35. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 256 - HCBBS Forum
36. General inspection of pipeline components - HCBBS Forum
37. Discussion on the causes of corrosion in the wastewater stripping feed section and the ammonia-rich gas system - HCBBS Forum
38. Daily Question 2015.7.27 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question) - HCBBS Forum
39. Hydrogen chloride pressure in the salt-acid combined furnace - HCBBS Forum
40. Issues in selecting hot water pumps - HCBBS Forum
41. The leader has assigned me to work on pilot testing, but this is my first time dealing with it. What should I pay attention to during the pilot testing process? - HCBBS Forum
42. Books on evaporator design - HCBBS Forum
43. One question per day, July 24: those who answer correctly will receive a 6-wealth reward - HCBBS Forum
44. Research on Natural Gas Desulfurization by Membrane Method - HCBBS Forum
45. Explosion protection - HCBBS Forum
46. Coke oven exhaust gas - HCBBS Forum
47. Hydrophobicity control valve - HCBBS Forum
48. Problems with steam and circulating water in the jacket - HCBBS Forum
49. Seeking guidance - HCBBS Forum
50. Discussion on PP and PB - HCBBS Forum
51. Can a plug valve be used in steam pipes? - HCBBS Forum
52. SIS redundancy issue - HCBBS Forum
53. 27 pairs of rod reduction furnaces - HCBBS Forum
54. Question 41 for Professionals on the morning of the first day of 2011 - HCBBS Forum
55. Error occurred while downloading the PKS simulation machine! - HCBBS Forum
56. How to determine the appropriate air supply for an exhaust gas furnace? - HCBBS Forum
57. Selection of equipment materials for acetic acid hydrogenation reactors - HCBBS Forum
58. Question 31 from the Morning Section on Professional Knowledge in 2013 - HCBBS Forum
59. Seeking help with problems related to the demister in falling film evaporators - HCBBS Forum
60. Problems with pre-lifting media - HCBBS Forum
61. What are the advanced polymer materials? - HCBBS Forum
62. Pressure testing of high-pressure threaded locking ring heat exchanger - HCBBS Forum
63. 【Daily Question】Question from Issue 20150724 - HCBBS Forum
64. Does the entrainment of excessive liquid foam to the upper tray levels necessarily lead to flooding? - HCBBS Forum
65. Comparison between fully enclosed and semi-enclosed electric arc furnaces – the following points are summarized; friends, please add more - HCBBS Forum
66. Discussion on copper sulfate products - HCBBS Forum
67. It is recommended to allow managers to customize the reasons for scoring (fixed, not required to be entered each time) - HCBBS Forum
68. Brief introduction to soft links - HCBBS Forum
69. One-way conversion rate of methanol - HCBBS Forum
70. Who can help me download these articles? Thank you - HCBBS Forum
71. I would like to ask whether enamel can be used on sulfuric acid reaction vessels? - HCBBS Forum
72. 【Daily Question】20150718 Knowledge of water treatment in furnaces (2 wealth points for replies + additional 3 wealth points for correct answers) - HCBBS Forum
73. Hydrogenation - HCBBS Forum
74. Meaning of digits and letters in the slowly opening/slowly closing check valve DY30AX-16C - HCBBS Forum
75. Skid-mounted equipment units in the process flow diagram - HCBBS Forum
76. Talk about the user experience after this update - HCBBS Forum
77. Sulfur content in liquefied gas - HCBBS Forum
78. How to reduce the COD content of water purified by acidic vapor stripping - HCBBS Forum
79. Reward for \"Professional English in Sugar Engineering\" - HCBBS Forum
80. The hardness issue of tungsten-chromium-cobalt alloy cladding - HCBBS Forum
81. The working principle of VCM pressure swing adsorption. - HCBBS Forum
82. Air-assisted unloading and air-free unloading of reciprocating compressor unloaders - HCBBS Forum
83. Understand the production of carbon-9 resin - HCBBS Forum
84. Material of salt acid pipelines - HCBBS Forum
85. What kind of pump is suitable as a feed pump for crude oil with a low flash point? - HCBBS Forum
86. Reverse the orientation of the stainless steel ball valve positioning plate - HCBBS Forum
87. Recruiting chemical engineering designers - HCBBS Forum
88. I’m working on a project related to the flanges at both ends of the owner’s instrumentation, and it’s really frustrating; I need help - HCBBS Forum
89. Share some ways to relieve the heat - HCBBS Forum
90. Pressure tapping method for self-acting control valves - HCBBS Forum
91. Fire resistance rating of the control room - HCBBS Forum
92. What do you do when you meet the team leader and the deputy leader, with one playing the role of the strict supervisor and the other that of the lenient one? - HCBBS Forum
93. Regarding the production of Mannheim furnaces - HCBBS Forum
94. Issues with the pipe diameters and valves before, after, and in the bypass of the mass flow meter - HCBBS Forum
95. Select a pneumatic valve for the following operating conditions - HCBBS Forum
96. Why did I get 100 wealth points just for reaching 17777? . . Isn’t the trailing number 7777 supposed to be 5000? - HCBBS Forum
97. Analysis and Discussion of the Results from Catalyst Evaluation Experiments - HCBBS Forum
98. How to choose a pump - HCBBS Forum
99. As a field operator, what are you most afraid of? - HCBBS Forum
100. [Daily Question] Regarding the impact of occupational hazards on human health: correct answer earns +6 wealth points, reply earns +2 wealth points - HCBBS Forum