English — Forum #723 (Page 490/642)

1. Regarding the Fenton oxidation issue - HCBBS Forum
2. Topic on internal corrosion protection (third week of October) - HCBBS Forum
3. Synthesis of m-methylchlorobenzene - HCBBS Forum
4. Can manholes be pre-installed in the side walls of the pool? Manholes similar to those on storage tanks? - HCBBS Forum
5. Causes of foaming in the extraction distillation tower (C-1001) and treatment methods - HCBBS Forum
6. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 342 - HCBBS Forum
7. 【Fantasy】Is it possible to convert the heat generated by the reaction between salt and acid into steam? - HCBBS Forum
8. Protection of heat transfer oil in winter - HCBBS Forum
9. What are the facilities for preventing environmental accidents? - HCBBS Forum
10. How to achieve anti-freezing in winter through catalytic external heat removal - HCBBS Forum
11. Looking for information on *compression compressors; thanks to all experts out there. - HCBBS Forum
12. Why are many throttling devices installed on the pipelines of refining units? - HCBBS Forum
13. Sulfide hydrogen levels have risen suddenly; what could be the cause? - HCBBS Forum
14. Let’s work on question 15-20 from the 2015 First-Class Constructor Examination, related to \"Engineering Economics\": multiple-choice questions 01-02 - HCBBS Forum
15. When recovering the latent heat from flue gas, preheating is used; how is this heat transfer temperature difference determined? - HCBBS Forum
16. 【Haichuan Irrigation Co., Ltd. Tea House】Advise reconciliation or separation? - HCBBS Forum
17. Help: Regarding different versions of Honeywell systems? - HCBBS Forum
18. How is the reaction heat for the synthesis of methanol from carbon monoxide and hydrogen calculated? - HCBBS Forum
19. Sulfur foam pump - HCBBS Forum
20. 【Daily Question】Question from Issue 20151022 - HCBBS Forum
21. Use of high-tower dust-free powder coolers - HCBBS Forum
22. To win can be interpreted in this way - HCBBS Forum
23. How can PVC roof tiles be treated to achieve a second-level fire resistance rating? - HCBBS Forum
24. [Cracking Question Bank] There are mainly two ways by which coking occurs in the radiant section tubes of cracking furnaces - HCBBS Forum
25. How can one check whether buried pipes are leaking, whether it’s due to gravity flow or under pressure? - HCBBS Forum
26. 【Daily Question】Question from the 20151023 issue - HCBBS Forum
27. The catalytic regenerator increases the superheated steam from the internal heat extractor for stripping - HCBBS Forum
28. Help calculate the outlet flow velocity after the transformation - HCBBS Forum
29. May I ask, what is the \"institute review\" in design review?” - HCBBS Forum
30. High ammonia nitrogen in the effluent - HCBBS Forum
31. Where should one determine the level of low thyroid load? - HCBBS Forum
32. Seeking expert guidance on materials - HCBBS Forum
33. The impact of multiple ground connections in a signal circuit on the signal - HCBBS Forum
34. Can those with a degree in Process Equipment and Control Engineering become certified fire engineers? - HCBBS Forum
35. Could various manufacturers provide reference standards for 65Mn steel rods used in coal grinding mills? - HCBBS Forum
36. Recruitment Information for the Coal-to-Hydrogen Unit of CNOOC Huizhou Refining and Chemicaling Project Phase II - HCBBS Forum
37. Help needed - HCBBS Forum
38. How are the left and right sides of the crude argon condenser distinguished? - HCBBS Forum
39. Regarding the preheating temperature of Cr-Mo steel tube sections - HCBBS Forum
40. Reverse-circulation axial discharge type evaporation crystallizer? - HCBBS Forum
41. Issues with flow rate of the new hydrogen compressor; those interested, please proceed - HCBBS Forum
42. Question: Relationship between the opening degree of the dampers in industrial furnaces (with natural ventilation) and negative pressure - HCBBS Forum
43. Daily Question 2015.10.27 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (multiple-choice question) - HCBBS Forum
44. A newly graduated college student, currently working in the field of coal tar hydrogenation, as an operator in a vacuum distillation unit - HCBBS Forum
45. The issue of whether painting is required for the lightning protection grounding of pipelines - HCBBS Forum
46. At a certain temperature, such as room temperature, what is the effect of sulfuric acid concentration on the corrosion rate of carbon steel? - HCBBS Forum
47. Regarding centrifuge selection! - HCBBS Forum
48. What are the latest energy-saving and emission-reduction measures for dry gas recovery, sulfur recovery, solvent regeneration, and acidic water stripping? - HCBBS Forum
49. Common pump failures and their solutions - HCBBS Forum
50. How to obtain activity points - HCBBS Forum
51. Seeking advice on the refill cycle for dry powder in dry powder fire extinguishers! ! ! - HCBBS Forum
52. On-site to control room instrument conversion - HCBBS Forum
53. How to deal with a drop in the inlet pressure of the synthesis tower? - HCBBS Forum
54. Urgently need a quality certificate for stainless steel forged flanges - HCBBS Forum
55. Process - HCBBS Forum
56. Online monitoring instruments for alkanes - HCBBS Forum
57. State-owned enterprises embark on a wave of major mergers - HCBBS Forum
58. Should a fixed-tube-sheet heat exchanger be used for media that can easily cause tube corrosion or scaling in the shell side? - HCBBS Forum
59. Problems with hydrogen production catalysts - HCBBS Forum
60. How leaders can make sound scientific decisions - HCBBS Forum
61. Regarding the tank inversion issue with screw pumps - HCBBS Forum
62. Questions regarding the reactor catalyst and feedstock - HCBBS Forum
63. Recruit 1 chief engineer for continuous chloroacetic acid production - HCBBS Forum
64. Guys, do you know that there are many chemical plants there? - HCBBS Forum
65. Looking for a job to repair safety valves over 10 years of experience - HCBBS Forum
66. 【Daily Question】Chemical Engineering Principles 210: Absorption (October 22) - HCBBS Forum
67. Principle and schematic diagram of the flue gas water seal tube in catalytic cracking - HCBBS Forum
68. Thiamine ratio - HCBBS Forum
69. An evaluation of the title of Senior General Layout Engineer – the fruit of over a decade of experience in general layout design - HCBBS Forum
70. All chapters of ISO8573-2010 version - HCBBS Forum
71. Elbow-type pressure tapping and flange-type pressure tapping are just different methods of taking pressure readings, but the basic structure of the standard orifice plate remains the same? - HCBBS Forum
72. 【Daily Question No. 35】October 19, 2015: +2 wealth for participation, +3 additional wealth for correct answers - HCBBS Forum
73. The world is so big; focus on living well in the present first. - HCBBS Forum
74. The issue of high specific consumption of circulating water - HCBBS Forum
75. Mechanical Equipment Section – September Moderator Post: Technical Team Salaries - HCBBS Forum
76. E-books on new processes for the design, manufacturing, and installation of industrial boilers (several of them are essential) - HCBBS Forum
77. 【Health Tips】Drink hyacinth bean porridge for health in autumn - HCBBS Forum
78. Fire engineer - HCBBS Forum
79. It’s really fun; sharing tips on getting lucky and finding golden eggs. - HCBBS Forum
80. Control of the stripping steam volume in the settler - HCBBS Forum
81. Help needed: clamp butterfly valve - HCBBS Forum
82. Achieve true zero-emission wastewater treatment - HCBBS Forum
83. Daily English ditty! ! - HCBBS Forum
84. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 336 - HCBBS Forum
85. Steam flow rate in the reactor with a desiccant trap - HCBBS Forum
86. In the electrolysis process, is there a difference between the anode solution and brackish water? - HCBBS Forum
87. The ammonia nitrogen level in the water after advanced treatment is actually higher than that in the water after secondary treatment – what’s the problem? - HCBBS Forum
88. Why is there a lot of white precipitate formed when using spectrophotometry to analyze drilling wastewater? - HCBBS Forum
89. Regarding the arrow direction of butterfly valves - HCBBS Forum
90. how to translate battery points - HCBBS Forum
91. 【Daily Question】Question 27: Test question from issue 20151026 (Reply +2)； For the other +3) - HCBBS Forum
92. What are the chemical reactions for synthesizing methanol? - HCBBS Forum
93. Does a rotor flow meter have a high pressure loss when in use, and does this loss vary depending on the flow rate? - HCBBS Forum
94. Existing defects of closed sampling devices - HCBBS Forum
95. Pressing of edge-banding angle steel - HCBBS Forum
96. Optimization of circulating water systems in refineries - HCBBS Forum
97. What factors affect the flow coefficient of a rotameter? - HCBBS Forum
98. Differences between SA213 and SA312 - HCBBS Forum
99. Separation system processing operations after the extraction system is changed to a circulation mode - HCBBS Forum
100. “What is the relationship among \"ecological economy,\" \"clean production,\" and \"circular economy\"? - HCBBS Forum