English — Forum #723 (Page 498/642)

1. What are the functions of the water distribution system in a cooling tower? - HCBBS Forum
2. What do you think– “A post-90s mother in Beijing says she can’t afford a second child and threw the baby in a trash can after giving birth”” - HCBBS Forum
3. Should the GB6479 standard be used according to its latest version for design? - HCBBS Forum
4. One Question per Day, October 13, 2015 - HCBBS Forum
5. Adjustment of the head position for the Life Insurance Division - HCBBS Forum
6. Sludge drying? - HCBBS Forum
7. What is the purpose of flow certification for safety valves? - HCBBS Forum
8. How to conduct a dynamic pressure drop experiment? - HCBBS Forum
9. As an employee in a chemical plant, what are your responsibilities regarding safe production? - HCBBS Forum
10. Welding - HCBBS Forum
11. Flame detector - HCBBS Forum
12. About sodium hydrosulfide - HCBBS Forum
13. 【Daily Question】Question from Issue 20151009 - HCBBS Forum
14. Seek help: Selection of safety valves for the following operating conditions - HCBBS Forum
15. 【Daily Question】Question from Issue 20151010 - HCBBS Forum
16. Has registration for certified fire engineers started? - HCBBS Forum
17. 【Daily Question】Question from Issue 20151013 - HCBBS Forum
18. Classification of fire hazard for mixed combustible media - HCBBS Forum
19. Question 62 of the October 15 furnace foundation: (A certain score is given to the top 40) - HCBBS Forum
20. Question: High error in determining benzene content in gas using gas chromatography - HCBBS Forum
21. Flow meters – Selection of flow velocity meters - HCBBS Forum
22. What would you do in this situation? - HCBBS Forum
23. Reliability Analysis of Key Equipment in Air Separation Units - HCBBS Forum
24. Determination of metal elements in coal quality? - HCBBS Forum
25. Recommendations for online dew point meters or online trace water analyzers - HCBBS Forum
26. Vacuum pump exhaust treatment - HCBBS Forum
27. Tank container - HCBBS Forum
28. SY-T0511 1996 \"Breather Valves for Oil Storage Tanks\" has been updated - HCBBS Forum
29. Can hot oil pipelines be worked on with open flames? Can hot oil catch fire? - HCBBS Forum
30. The necessity for chemical industry salespeople to build up a large number of clients - HCBBS Forum
31. Daily Question: October 12, 2015 – Passivation of Hydrogenation Reactors - HCBBS Forum
32. 【Daily Question】Question from Issue 20151015 - HCBBS Forum
33. The air flotation unit produces a lot of foam - HCBBS Forum
34. Sampling methods for trace mercury in natural gas - HCBBS Forum
35. A pressure reducing valve is installed on the circulating water pipeline; is it necessary to add a design filter in front of the valve? - HCBBS Forum
36. Urgently need help - HCBBS Forum
37. Briefly describe how to maintain the two most common faults in bridge cranes - HCBBS Forum
38. 【Weekly Question from October 12-18】Multiple-choice question - HCBBS Forum
39. Questions regarding the selection of conditions for detecting high-boiling substances using a gas chromatograph - HCBBS Forum
40. Effective ways of corporate training - HCBBS Forum
41. 【Daily Question No. 27】October 08, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
42. Temperature control of the desulfurization fluid in HPF ammonia-based desulfurization process - HCBBS Forum
43. Research on coal-to-methanol - HCBBS Forum
44. Could I ask an expert some questions regarding the use of the Cadworx software? Thank you! - HCBBS Forum
45. Seek domestic contact information for foreign PSA hydrogen production manufacturers - HCBBS Forum
46. 【Daily Question No. 5】October 16, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
47. The long-shaft submersible pump makes abnormal noises and shuts down - HCBBS Forum
48. Regarding the integrated filtration and drying machine - HCBBS Forum
49. Silicone oil - HCBBS Forum
50. Looking for distillation data on coal-based ethylene glycol - HCBBS Forum
51. When installing the sealant surface and condenser tank, should they be placed horizontally or vertically? - HCBBS Forum
52. Circulating water for pumps - HCBBS Forum
53. Can pro2 be used to calculate the volume of a flash tank? - HCBBS Forum
54. 【Daily Question】Question from Issue 20151013 - HCBBS Forum
55. [MTBE] Profit Analysis of MTBE Plants in Shandong Region (20151008) - HCBBS Forum
56. What can be inferred from the conversations among the 4 technicians and managers? - HCBBS Forum
57. Let’s work on Question 01-05 of Set 01 from the 2015 First-Class Constructor Examination – multiple-choice questions on Laws and Regulations - HCBBS Forum
58. Profit statistics for alkylation units (20151009-1015) - HCBBS Forum
59. Looking for a design job (Changsha, Guangzhou, or Shenzhen are all acceptable) - HCBBS Forum
60. Special items available at the convenience store of HaiChuan Irrigation Co., Ltd.: Practice questions for the 2015 First-Class Constructor Exam - HCBBS Forum
61. Regarding the sewage expansion tank - HCBBS Forum
62. Graphite plate heat exchanger - HCBBS Forum
63. It took just a few minutes to reach nearly 400 replies – is someone using a plugin? ? ? - HCBBS Forum
64. 【Daily Question】Question from Issue 20151011 - HCBBS Forum
65. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 189 - HCBBS Forum
66. 【Daily Question】Question from Issue 20151016 - HCBBS Forum
67. The content in William Ruipin’s book, starting from Chapter 7, is simply too difficult to understand - HCBBS Forum
68. Can acidic liquids be evaporated and concentrated using MVR? - HCBBS Forum
69. Basic Questions on Safety: What do you think safety science is? - HCBBS Forum
70. Where can calcium fluoride with a 60% content be used? Or can it replace fluorite? What are the requirements for impurities? - HCBBS Forum
71. Abnormal noise from the plunger pump valve disc - HCBBS Forum
72. Insulation for the manhole at the venturi of the pyrolyzer - HCBBS Forum
73. Liquid nitrogen vaporizer design consultation - HCBBS Forum
74. Does the amine solution (MDEA) pipeline need to be degreased? - HCBBS Forum
75. Seeking full analysis of oil products - HCBBS Forum
76. What is the purpose of crude methanol distillation? - HCBBS Forum
77. What are the application ranges of steam pressure reduction devices, control valves, and pressure relief valves? - HCBBS Forum
78. How are tray types classified according to the flow of their liquid phase? - HCBBS Forum
79. The ratio between the pre-pump and the main pump in a vacuum system - HCBBS Forum
80. Environmental Protection Daily Quiz 10.9: Participate for prizes; 3 wealth points for correct answers, plus an additional 2 wealth points - HCBBS Forum
81. Ask for help - HCBBS Forum
82. Propylene loading and unloading process - HCBBS Forum
83. Rashomon “The Great Nephew’s Contract Extension Incident”” - HCBBS Forum
84. Problems encountered during the start-up of dry hydrogen production! - HCBBS Forum
85. 【Daily Question】Chemical Engineering Principles 200: Completely Dry Materials (October 12) - HCBBS Forum
86. What kind of pressure is used with absolute pressure transmitters (measuring positive or negative pressure)? - HCBBS Forum
87. What is the basis for formulating a welding sequence plan? - HCBBS Forum
88. What should be noted when opening and closing the balance valve in a differential pressure flow meter filled with isolation fluid? What are the principles? - HCBBS Forum
89. 【Bizarre Safety Violations】Will there be a second season? - HCBBS Forum
90. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 194 - HCBBS Forum
91. 【Daily Question】Question from Issue 20151015 - HCBBS Forum
92. Measurement of steam trap leakage - HCBBS Forum
93. Tragedy! My QQ account has been stolen! ! ! - HCBBS Forum
94. I would like some advice on knowledge related to instruments. - HCBBS Forum
95. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 191 - HCBBS Forum
96. Joint Learning*1016: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
97. Please have a professional analyze the issues related to furnace drying for the newly built sulfur plant. Thank you - HCBBS Forum
98. Conceptual issues regarding the range and span of differential pressure transmitters - HCBBS Forum
99. Questions from Issue 20151016 - HCBBS Forum
100. 【Daily Question】Question from Issue 20151009 - HCBBS Forum