English — Forum #723 (Page 439/642)

1. (Basic knowledge) Into which categories is the fluidization state divided at different gas flow velocities? - HCBBS Forum
2. Help! ! ! What are the tasks of a safety officer in a chemical plant? ? ? - HCBBS Forum
3. Issues related to the bottom ring pipe of the fractionation tower - HCBBS Forum
4. What are the components of pre-treatment cleaners for circulating water? - HCBBS Forum
5. What are the differences in application areas and functions between expansion joints and flexible connections (the rubber type)? - HCBBS Forum
6. Heat exchangers designed according to GB151 using materials that meet ASTM standards - HCBBS Forum
7. What are the principles of reliability management? - HCBBS Forum
8. Which brand of imported safety valves is the cheapest - HCBBS Forum
9. What is the heat resistance temperature of the tube bundle in a heat exchanger? - HCBBS Forum
10. Yokogawa CS3000 Chinese documentation - HCBBS Forum
11. Regarding the bromine solution standard solution - HCBBS Forum
12. Can the BEU type heat exchanger have its shell side fixed? - HCBBS Forum
13. Those who need a project can come talk to me - HCBBS Forum
14. Regarding the issues related to the equipment for alkylation and isomerization units as well as the overall plant setup, including various operational parameters and technical specifications! - HCBBS Forum
15. 【Daily Question】Question from the 20151126 issue - HCBBS Forum
16. Previously, I was involved in safety and fire protection work. I’ve started to get involved in environmental protection now, and I’m a bit confused. Could someone with more experience give me some advice? - HCBBS Forum
17. Why does the SNCR process lead to the formation of N2O during operation? - HCBBS Forum
18. What should be considered in steam pipeline design? - HCBBS Forum
19. Why can air-cooled vacuum pumps discharge directly into the atmosphere - HCBBS Forum
20. The pressure of the secondary steam entering the second effect due to evaporation is too high - HCBBS Forum
21. Problems related to the use of valves in liquefied gases - HCBBS Forum
22. Help: How to define work at heights? - HCBBS Forum
23. Issue of the maximum allowable operating pressure - HCBBS Forum
24. Solubility of hydrogen in liquid ammonia - HCBBS Forum
25. What is the explosion limit? - HCBBS Forum
26. One question per day (1129) - HCBBS Forum
27. What is the number of air changes per hour in the chlorine dioxide generation room? What is the basis? - HCBBS Forum
28. Standard for power distribution cabinets in chemical plants** - HCBBS Forum
29. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from Issue 20151202 - HCBBS Forum
30. Treatment of ammonia-vaporized waste liquid by reverse osmosis - HCBBS Forum
31. I need help: Will PTFE (polytetrafluoroethylene) be corroded upon prolonged contact with acrylonitrile-based media? - HCBBS Forum
32. Which chemical companies generate waste alkali? - HCBBS Forum
33. Regarding the selection of level gauges - HCBBS Forum
34. I try to break the golden egg every day, but I can’t do it today; it’s not possible. Why? - HCBBS Forum
35. Heat exchanger leak detection - HCBBS Forum
36. Analysis of the Current Status and Development Trends of China’s Coal Chemical Industry - HCBBS Forum
37. 【Daily Question】11.26 Multiple-choice question: When the furnace tubes of a heating furnace rupture, what phenomenon will inevitably occur? - HCBBS Forum
38. Can an external-mounted level gauge be used to measure coal tar? - HCBBS Forum
39. Which one is more resistant to acids (alkali acids, sulfuric acid), enamel or graphite? And which one is more resistant to alkalis (liquid caustic)? - HCBBS Forum
40. 【Daily Question】November 29, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
41. End-to-end dimension issues of API599 plug valves - HCBBS Forum
42. There is a seal leakage in the slag breaker – are there any good solutions? - HCBBS Forum
43. 【Picture of the Day】12.5 What is the name of the device in this picture? What is its function? - HCBBS Forum
44. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 232 - HCBBS Forum
45. Safety education animation for visitors to chemical plants* - HCBBS Forum
46. 【Picture of the Day】12.3: What is the name of this device on top of the storage tank? Those who answer correctly will receive 10 wealth points! - HCBBS Forum
47. Effect of coal slurry particle size distribution on gasification - HCBBS Forum
48. Internal leakage in the discharge valve of the acidic water ammonia crystallizer - HCBBS Forum
49. Heat exchanger area - HCBBS Forum
50. Flue gas desulfurization in steel plant sintering and pelletizing processes - HCBBS Forum
51. The function of baffle plates - HCBBS Forum
52. Question regarding the function of the hot gas bypass pipe in mixed refrigerant compressors - HCBBS Forum
53. 【Mechanical Zone】Sharing on equipment anti-freezing measures – your participation is welcome - HCBBS Forum
54. How much bleach is needed for wastewater containing 100mg per liter of **? - HCBBS Forum
55. Welding procedure qualification - HCBBS Forum
56. Environmental Protection Daily Quiz 12.1: Participate for prizes; 3 answers correct and you’ll get another 3 prizes - HCBBS Forum
57. Sulfur dioxide levels in coke oven chimneys meet the standards - HCBBS Forum
58. Regarding the failure of the isolation valve in the tank area to operate - HCBBS Forum
59. Looking for Christmas card templates - HCBBS Forum
60. Composite plate groove inspection - HCBBS Forum
61. What are the specific requirements for inspecting the equipment foundation before lifting tower-type equipment? - HCBBS Forum
62. Chemical plant inspection system - HCBBS Forum
63. DCS configuration - HCBBS Forum
64. The pH value issue of water purified by sewage stripping - HCBBS Forum
65. Seek high-precision local remote temperature transmitters - HCBBS Forum
66. Why is it necessary to align the pipe ends before lifting? - HCBBS Forum
67. Design standards for centrifugal pumps - HCBBS Forum
68. What is the form of liquefied gas in the delayed coking stabilizer? - HCBBS Forum
69. What are receiver instruments? - HCBBS Forum
70. What is the English translation for bag unloading machine? - HCBBS Forum
71. Valve code identification - HCBBS Forum
72. Does anyone know where there are gas separation units under construction? - HCBBS Forum
73. Are automatic fire alarm systems required in the power distribution room and transformer room? - HCBBS Forum
74. Help, what does “replacing the warranty” for a small turbine mean? - HCBBS Forum
75. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for those who participate； Question 227 - HCBBS Forum
76. Describe in detail the process of desulfurization and alkali replacement in delayed coking - HCBBS Forum
77. 【Daily Question】Question from Issue 20151130 - HCBBS Forum
78. What causes excessive foam to be generated in the aerobic tank? - HCBBS Forum
79. Just starting out in the workplace, full of life’s uncertainties! I seek advice from those who are more experienced! - HCBBS Forum
80. Purification and recovery of hydrocyanic acid - HCBBS Forum
81. A man spent 100 days collecting fog and dust to make bricks – what do you think? - HCBBS Forum
82. An Overview of the Current Development Status of Adhesives for Metals - HCBBS Forum
83. Vacuum system design - HCBBS Forum
84. 【Daily Question】Dec 1, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
85. Tank accessories - HCBBS Forum
86. Regarding centrifugal extractors - HCBBS Forum
87. When iron forms a colloid in water, what methods can be used to remove it? - HCBBS Forum
88. Register for the Basic Chemical Engineering Exam - HCBBS Forum
89. Classic quotes from 2015: I don’t hate you, because I don’t want to remember you - HCBBS Forum
90. There is a translation related to the distribution of thermocouples in reactors; I can’t understand it. Please help - HCBBS Forum
91. What does the mechanical operation test of a centrifugal pump include? - HCBBS Forum
92. Who knows which are the well-known domestic overhead crane manufacturers? - HCBBS Forum
93. 【Daily Question】Question from Issue 20151204 - HCBBS Forum
94. 【Daily Question】 December 2: What is the common voltage rating for low-voltage motors used in conjunction with fuel oil production units and pumps? ? - HCBBS Forum
95. Does anyone know someone from Ronghui Chemicals? - HCBBS Forum
96. Statistics on methanol projects that were under construction, in operation, or shut down in China in 2015, along with their production capacities – feel free to leave your comments! - HCBBS Forum
97. I have a question regarding the flanges for large-diameter pipes with a pressure rating of PN4.0MPA or higher! - HCBBS Forum
98. FRP injector for oxidation tank - HCBBS Forum
99. Outdoor-mounted dashboard - HCBBS Forum
100. “The “cycle-free methanation process technology” has reached the international advanced level - HCBBS Forum