English — Forum #723 (Page 574/642)

1. An explanation of the welding coefficient of 0.85 – for educational purposes - HCBBS Forum
2. Why is the atomic weight of hydrogen 1? - HCBBS Forum
3. Weekly question: Regarding the process of activating the ESD accident suppression system for Reactor No. 2, provide evaluations or suggestions; a reward of 5 to 15 wealth points will be given - HCBBS Forum
4. Cold and hot forming of end caps – let’s discuss it! ! - HCBBS Forum
5. Why has the required condensation temperature **decreased**? - HCBBS Forum
6. the meaning of live - HCBBS Forum
7. 【Daily Question】Chemical Engineering Principles 135: Henry’s Law Constant (August 9) - HCBBS Forum
8. Manufacturing technical requirements for A335P91 - HCBBS Forum
9. Why is continuous discharge necessary for the circulating water tank? - HCBBS Forum
10. 【Weekly Topic】20150804 What are the factors affecting the desulfurization efficiency of circulating fluidized bed boilers? (Participation rewards available) - HCBBS Forum
11. Sales of high-purity 4-iodobiphenyl – what are the downstream products? - HCBBS Forum
12. Circulating water cooling - HCBBS Forum
13. What should I do if I can’t access the forum when logging in with my QQ account? - HCBBS Forum
14. How is the nitrogen filling pressure for the accumulator in PLAN53B determined? - HCBBS Forum
15. Does anyone know someone from Shandong Haike? What’s the actual situation with Haiko Company? - HCBBS Forum
16. Seek equipment or manufacturers for quench tower + dry spray system + drying tower after incineration of hazardous materials - HCBBS Forum
17. The meaning of filler codes in the Sulcol software - HCBBS Forum
18. Question 21, Morning Session of Professional Knowledge, 2014 - HCBBS Forum
19. Problems with low-load operation of expansion compressors - HCBBS Forum
20. Post on salary payment for the touring team in July 2015 - HCBBS Forum
21. Tianjin University Practice Test (1), Question 20 - HCBBS Forum
22. Installation relationship of flowmeter and control valve - HCBBS Forum
23. Regarding the commissioning of ammonia purification via wastewater stripping - HCBBS Forum
24. Are there any design specifications for the ash discharge pipelines in cement kilns? - HCBBS Forum
25. Can a storage tank for 50% methanol aqueous solution be made with a diameter of 4200 mm and a height of 10500 mm? - HCBBS Forum
26. Installation of the fixing frame - HCBBS Forum
27. The packing in the circulating water plant has collapsed – how to deal with it? - HCBBS Forum
28. Cyclic hydrogen compressor piping - HCBBS Forum
29. Advantages of pre-lifting of dry gas - HCBBS Forum
30. Types of Samsung air compressors - HCBBS Forum
31. Regulations on Special Maintenance Management for the Operation of Large-scale Units in Refining and Chemical Enterprises - HCBBS Forum
32. Comparative discussion on the HPPO process - HCBBS Forum
33. Are there any project details requiring distillation towers or efficient packing inside towers? - HCBBS Forum
34. The temperature of the crystallizer in the caustic soda plant is increasing - HCBBS Forum
35. The issue of nitrogen purging or vacuuming for liquefied gas transport vehicles prior to leaving the factory - HCBBS Forum
36. Main steam flow transmitter - HCBBS Forum
37. Regulations on Continuous Inspection by Workers in Refining and Chemical Enterprises - HCBBS Forum
38. Analysis of LiF production process - HCBBS Forum
39. What should be done with the natural gas market? - HCBBS Forum
40. What are the analysis methods for hydrogen purity? To detect at the 5N level - HCBBS Forum
41. Some questions regarding the corrosion rate of concentrated sulfuric acid - HCBBS Forum
42. May I ask which expert has API RP 932B? - HCBBS Forum
43. What projects require an environmental impact assessment - HCBBS Forum
44. Welding issues with post-weld heat treatment equipment - HCBBS Forum
45. Regarding the painting pretreatment of seamless steel pipes - HCBBS Forum
46. 【Daily Question】2015.08.06 Stainless steel structure types (2 wealth points for a reply; +3–8 additional wealth points if the answer is correct) - HCBBS Forum
47. 【Daily Question】Basic knowledge of coking: +6 wealth for correct answers, +2 wealth for participation. Question 6 from 201507 - HCBBS Forum
48. How to carry out preventive maintenance on mechanical pumps? - HCBBS Forum
49. I’m asking all the experts here: are there any materials on PLC diagrams and an introduction to electrical systems? - HCBBS Forum
50. What is the fee for the design of fine chemical projects, as a percentage of the investment? - HCBBS Forum
51. Operating procedures for phosphorus trichloride - HCBBS Forum
52. Dosage of reverse osmosis scale inhibitor and scale inhibitor clogging - HCBBS Forum
53. Just like for registered civil engineers (road engineering), will most of the certification exams be suspended for a year this year? - HCBBS Forum
54. Why do copper-based catalysts need to be deeply reduced? - HCBBS Forum
55. Quantity of reciprocating compressor spare parts - HCBBS Forum
56. What quotas are used for the construction of petrochemical pipelines? ---Solved - HCBBS Forum
57. Value of the heat transfer coefficient - HCBBS Forum
58. Can 345 be used at temperatures over 350 degrees in a pressure vessel at atmospheric pressure? - HCBBS Forum
59. Carbon dioxide removal issue - HCBBS Forum
60. The distance between the conversion furnace and the natural gas compressor in natural gas-based hydrogen production plants - HCBBS Forum
61. SCR catalyst activity evaluation device - HCBBS Forum
62. Schematic diagram of the installation of a directly-mounted pressure transmitter in the instrument panel - HCBBS Forum
63. Do LNG plants need to be equipped with refrigeration workers? - HCBBS Forum
64. Requirements for installing buffer tubes on pressure gauges - HCBBS Forum
65. When heating from 280°C to 310°C, can saturated water vapor at 330°C be used as a utility? - HCBBS Forum
66. Is it better to switch a coal-fired heat transfer oil furnace to natural gas or biomass fuel? - HCBBS Forum
67. Question 51, Morning Session, Professional Knowledge, 2012 - HCBBS Forum
68. Container material sticking to the walls: solutions - HCBBS Forum
69. What physical concept does BEP of a centrifugal pump represent? - HCBBS Forum
70. Scaling in the downcomer and upcomer loops of the Texaco gasifier - HCBBS Forum
71. Selection issues for oxygen control valves - HCBBS Forum
72. Urgently need bellows made of PTFE for valves… - HCBBS Forum
73. 【Daily Question】20150801 Valve operation knowledge (2 wealth points for replying, +3 wealth points for getting it right) - HCBBS Forum
74. Selection of packing for small valves below DN25 in hydrocracking? - HCBBS Forum
75. Find a classic image of an accident involving the outlet pipeline of a safety valve - HCBBS Forum
76. 【Daily Question】Question from Issue 20150807 - HCBBS Forum
77. How to improve spoken language skills - HCBBS Forum
78. Support design at both ends of the control valve in engineering design - HCBBS Forum
79. Safety level of chemicals - HCBBS Forum
80. 【Daily Question】- Distance setting for the eye washer (2 points for a reply, 4 points for the correct answer) - HCBBS Forum
81. What are the forums for domestic polypropylene process equipment? - HCBBS Forum
82. 【Basic Knowledge of Terminology Explanations for “Polymers and Materials”-002】Terminology explanations related to plastic processing - HCBBS Forum
83. Reasons for low pressure drop in packed towers - HCBBS Forum
84. High-pressure reaction in a reactor - HCBBS Forum
85. Will a reduction in the CO2 component among the raw materials used for methanol synthesis affect the methanol synthesis reaction? - HCBBS Forum
86. Questions regarding the setting of sampling valves - HCBBS Forum
87. 【Daily Question】Question from Issue 20150804 - HCBBS Forum
88. Do the inlet and outlet valves need to be closed before starting a turbine compressor? - HCBBS Forum
89. How to deal with hand vibration interference in compressed air measurements? - HCBBS Forum
90. 【Daily Question】August 4: What is the phenomenon of overfilling that occurs when the liquid level control in a boiler’s drum fails? - HCBBS Forum
91. Safe distance for LNG unloading - HCBBS Forum
92. Are there any acid water storage tanks made of stainless steel used in China? Solve? ? ? ? - HCBBS Forum
93. How to make steamed pork in rice flour - HCBBS Forum
94. 【Daily Question】Question from Issue 20150806 - HCBBS Forum
95. How to determine whether a container is under positive pressure or negative pressure - HCBBS Forum
96. 【Basic Knowledge of Reaction Mechanisms for the “Polymer” Major - 003】Basic Knowledge of the Polymer PTA Reaction Mechanism - HCBBS Forum
97. Conflict between fire safety inspections and safety inspections - HCBBS Forum
98. Regulations on the Management of Automated Interlock Protection in Refining and Chemical Enterprises - HCBBS Forum
99. Looking for the AutoCAD software package - HCBBS Forum
100. Xiaobai would like to ask which industries make frequent use of instruments such as pressure transmitters and temperature transmitters - HCBBS Forum