English — Forum #723 (Page 608/642)

1. Individual job application, 13 years of work experience - HCBBS Forum
2. Seeking information related to electrolyzer tube assemblies - HCBBS Forum
3. When ozone is used to treat pollutants in pharmaceutical wastewater, the COD initially decreases; why does it increase later on? - HCBBS Forum
4. Isolation chamber of double-end mechanical seal - HCBBS Forum
5. How to detect sodium thiolate in the caustic solution regenerated from liquefied gas desulfurization using fiber membranes - HCBBS Forum
6. Calculation of moisture in alkali vapor - HCBBS Forum
7. Online monitoring of the pH value of water extracted with MTBE - HCBBS Forum
8. 【Daily Question】 July 2 What does the air distribution in a plant’s heating furnace affect? - HCBBS Forum
9. University teachers applying for the registered chemical engineer professional examination - HCBBS Forum
10. The countless complexities of online romances - HCBBS Forum
11. Four components of coker residue oil - HCBBS Forum
12. For AEO, AES, and polyoxyethylene ethers, are there any indicators for residual ethylene oxide and dioxane in the production process or in the testing of the final products? - HCBBS Forum
13. Is there anyone who knows how to redesign the piping jacks? - HCBBS Forum
14. Calculation of the average temperature of coke oven chimneys - HCBBS Forum
15. What is the deviation in the purity analysis of MTBE by chromatography? - HCBBS Forum
16. Is it appropriate to hold an award ceremony after a leak and fire at a chemical plant’s facility have been resolved through emergency repairs? - HCBBS Forum
17. Is it necessary to go back to school for a master’s degree given the current market situation? - HCBBS Forum
18. What material is best for a chloroform distillation kettle? - HCBBS Forum
19. Can it also help with registration? - HCBBS Forum
20. Goodbye, or no longer to be seen - HCBBS Forum
21. Safety measures for hot work in tank areas - HCBBS Forum
22. Daily Question 2015.7.4 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question) - HCBBS Forum
23. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 243 - HCBBS Forum
24. Weekly topic: 5 Wealth points for correct answers, 2 Wealth points for participation； Question 97 - HCBBS Forum
25. Which is more expensive, steel containers or concrete containers? ! - HCBBS Forum
26. HYSYS V8.4 optimizer (resolved) - HCBBS Forum
27. Temperature distribution inside the distillation column - HCBBS Forum
28. Poly carbonate membrane dehydration design - HCBBS Forum
29. Analysis of the reasons for high pressure difference in the hydrogenation unit bed - HCBBS Forum
30. Chow Tai Fook applies for〖Haichuan Technician〗 - HCBBS Forum
31. Catalyst for green production process of o-ethoxyphenol and o-methoxyphenol - HCBBS Forum
32. I hope the seniors can donate some books to me - HCBBS Forum
33. Method for determining the acid value of heat transfer oil - HCBBS Forum
34. Variable-frequency centrifugal pump - HCBBS Forum
35. Here we go again, a question on physical chemistry; let’s discuss it together - HCBBS Forum
36. Epoxy resin catalyst mechanism - HCBBS Forum
37. Introduction to the various specifications and uses of common valves - HCBBS Forum
38. Fenton questions regarding chromium-containing wastewater - HCBBS Forum
39. Seeking help with the issue of air flotation causing substances to come to the surface - HCBBS Forum
40. KBR ROSE process package patent fees - HCBBS Forum
41. How to estimate binary interaction parameters when HYSYS calls the Aspen fluid package? - HCBBS Forum
42. Plate heat exchanger temperature difference - HCBBS Forum
43. What are the differences between the D-series solvent oil hydrogenation unit and the alkylation unit? - HCBBS Forum
44. Ventricular-type steam trap - HCBBS Forum
45. Should one go to college or not? - HCBBS Forum
46. Isopropylbenzene, phenol issues - HCBBS Forum
47. Is there no notification when a post receives a reply? - HCBBS Forum
48. Let’s discuss how to address the high temperature of exhaust gases in the reduction furnace - HCBBS Forum
49. Do you know what material 312546Mn is? - HCBBS Forum
50. Removal of internal burrs from galvanized welded steel pipes - HCBBS Forum
51. Discussion on the injection method of corrosion inhibitors at the tower top - HCBBS Forum
52. Those with relevant qualifications in Hebei can now obtain the certificates - HCBBS Forum
53. Color selection for oxygen hoses and acetylene hoses - HCBBS Forum
54. The difference between COD and BOD - HCBBS Forum
55. Where has the home version of the debate competition gone? - HCBBS Forum
56. Whether the pipeline can be buried underground - HCBBS Forum
57. Help needed with selecting paint for equipment; a beginner seeking advice. . . - HCBBS Forum
58. Why is urea added to large buses? - HCBBS Forum
59. Debugging process and precautions for PLC systems in industrial boilers - HCBBS Forum
60. Formation of aerobic granular sludge - HCBBS Forum
61. Regarding SSC and HIC tests for fittings - HCBBS Forum
62. What does a pinless butterfly valve refer to, as mentioned by customers in the context of pneumatic butterfly valves? - HCBBS Forum
63. There is that coking company that uses super centrifuges - HCBBS Forum
64. How is the pressure of high-temperature nitrogen reduced? - HCBBS Forum
65. Who has the project department management system? It’s driving me crazy - HCBBS Forum
66. What are the precautions for air-cooled towers during chemical cleaning with circulating water? ? ? - HCBBS Forum
67. Temperature control issues in packed extraction towers - HCBBS Forum
68. 【Daily Question】Wastewater Knowledge-109 (June 26) (2 points for answering, 4 points for a correct answer) - HCBBS Forum
69. Definitions and differences between powder pipelines and slurry pipelines! - HCBBS Forum
70. Reason for the decrease in outlet pressure after replacing the fixed-frequency pump with a variable-frequency pump - HCBBS Forum
71. 【Daily Question】Principles of Chemical Engineering 093: Settling Velocity of Dust Particles (June 28) - HCBBS Forum
72. The stock market is in a terrible state – will anyone jump to their death tomorrow? - HCBBS Forum
73. The moisture content in the gas after desulfurization using MDEA is above the specified limit - HCBBS Forum
74. After completing the monthly production cost analysis, my mood becomes gloomy for several days for no apparent reason. - HCBBS Forum
75. What does pressure refer to in the design? - HCBBS Forum
76. What is the average scale of CNOOC’s refineries? - HCBBS Forum
77. Pipe materials are also hard to dry - HCBBS Forum
78. How to perform the welding of 2205 duplex stainless steel - HCBBS Forum
79. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 108 - HCBBS Forum
80. Soot blowing procedures and precautions for the convection section of a heating furnace - HCBBS Forum
81. Causes of damage to mechanical parts and treatment methods - HCBBS Forum
82. Regarding the handling of “resource sharing posts” - HCBBS Forum
83. 25 positive sentences - HCBBS Forum
84. Issues regarding the calculation of the relief volume of safety valves in case of a fire - HCBBS Forum
85. Is a control valve flange grade of PN16 suitable for butylene? - HCBBS Forum
86. Lubricating-type decompression and deep drawing-type decompression - HCBBS Forum
87. What is the purpose of adding a covering agent to salt acid? What are the components of the coating agent? - HCBBS Forum
88. The pipeline distance is long; is there an automatic inspection method? - HCBBS Forum
89. Seeking help regarding the output jump issue of pressure transmitters! - HCBBS Forum
90. 1 - HCBBS Forum
91. The gas-phase load of the tower, and the acid gas flow rate? - HCBBS Forum
92. Methods to prevent aging of PVC pipes? - HCBBS Forum
93. Operating temperature of glass lining adhesive - HCBBS Forum
94. Instrument isolation regarding plant purging - HCBBS Forum
95. Brands of imported and domestic ultrasonic flowmeters - HCBBS Forum
96. Can Q235B flat steel be used for pressure vessels, namely for vessel shells and heads? - HCBBS Forum
97. Sources and control of nitrogen oxides in the exhaust gas from acid waste regeneration units - HCBBS Forum
98. Conditions for branch pipe connection - HCBBS Forum
99. The significance of replacing burners in the gasification furnace and its impact on subsequent processes - HCBBS Forum
100. What is a tangential pipe connection - HCBBS Forum