English — Forum #723 (Page 454/642)

1. Seeking advice on fuel issues for atmospheric and vacuum distillation heaters - HCBBS Forum
2. 【Daily Question】November 13, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
3. [Fun facts about polymers and materials] --016 Fun facts about the “non-woven fabric” materials around us +ljtjbx - HCBBS Forum
4. Sour gas with oil - HCBBS Forum
5. Will next year really be even worse than this one? When will economic integration take place? - HCBBS Forum
6. Issues with the check valves installed on the nitrogen pipelines used for driving or zero-hour purging - HCBBS Forum
7. Is the shaft diameter of the mechanical seal the same as the inner diameter of the shaft sleeve? - HCBBS Forum
8. Seeking help with aromatic extraction unit - HCBBS Forum
9. 【Daily Question】Question for 20151109 - HCBBS Forum
10. 【Daily Question】Question from Issue 20151110 - HCBBS Forum
11. Environmental Protection Daily Quiz: Participate on 11.15 for prizes; 3 correct answers earn an additional 3 prizes - HCBBS Forum
12. [Environment, Health & Safety Section] Technical Team Promotion Application for October 2015 - HCBBS Forum
13. One question per day - HCBBS Forum
14. How is salt-added extractive distillation used for ethanol-water separation in industry? - HCBBS Forum
15. The tensile strength of the pipes exceeds the specified limit; can this batch of material be used? - HCBBS Forum
16. Why is the average hydrogen partial pressure in the reactor 10-15% lower than the hydrogen partial pressure at the reactor inlet? - HCBBS Forum
17. There is too much water in the fuel tank of the methanol synthesis gas compressor. - HCBBS Forum
18. Regarding catalysts - HCBBS Forum
19. Sign-in record post dated November 16, 2015 - HCBBS Forum
20. Have you understood the deeper meaning of the story? - HCBBS Forum
21. I’d like to ask, do you think there are enough staff for the positions? - HCBBS Forum
22. Part-time job in chemical equipment design (heat exchangers, vessels) - HCBBS Forum
23. Vacant houses and safety distances - HCBBS Forum
24. What are the hazards of not using ion exchange resin for a long time? - HCBBS Forum
25. Synthetic route of chlormequat chloride (CCC) - HCBBS Forum
26. What is security? How do you understand it? - HCBBS Forum
27. Translation of pump - HCBBS Forum
28. Search for and arrange affiliation for the intermediate automatic control engineer title certificate - HCBBS Forum
29. 【Daily Question No. 24】November 12, 2015: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
30. There is a question regarding the most appropriate water temperature for burner cooling water - HCBBS Forum
31. Chemistry qualification exam - HCBBS Forum
32. deuterium lamp - HCBBS Forum
33. Methods for dealing with expired high- and low-expansion fire foam liquids - HCBBS Forum
34. Atmospheric residue and vacuum wax oil - HCBBS Forum
35. What did everyone buy at the convenience store of HaiChuan Irrigation Co., Ltd. on Double 11 today? - HCBBS Forum
36. Common frustrating operations in organic synthesis - HCBBS Forum
37. Specifications for the overpressure hydrostatic test pressure of boilers - HCBBS Forum
38. Regarding the issue of abnormal total phosphorus in circulating water - HCBBS Forum
39. Dingwu class liquid storage tanks - HCBBS Forum
40. What is the principle of a servo amplifier? - HCBBS Forum
41. Various accidents that have occurred in sulfur plants over the past few years - HCBBS Forum
42. Which manufacturer produces high-quality bellows globe valves? - HCBBS Forum
43. 【Daily Question】 November 9th: The more stages a pump has, what happens to its flow rate? ? ? ? ? - HCBBS Forum
44. Variation of adiabatic furnace exit temperature and hot spot temperature - HCBBS Forum
45. What is the purpose of the process for controlling the liquid level in the [chlorine scrubber]? - HCBBS Forum
46. I need help with some questions regarding the liquefaction and separation of refrigerants - HCBBS Forum
47. Crack propagation rate - HCBBS Forum
48. 【Daily Question】Question from Issue 20151111 - HCBBS Forum
49. One post per day (prize-winning quiz) - HCBBS Forum
50. A bit confusing issue with welding work - HCBBS Forum
51. 【Daily Question】Question for 20151110 - HCBBS Forum
52. Alkylation unit losses - HCBBS Forum
53. 【Daily Question】November 6: Three types of sealing (first 80 participants + 2 extra points for correct answers; 3–8 wealth points additional) - HCBBS Forum
54. What are the differences in pressure between atmospheric vessels and pressure vessels? - HCBBS Forum
55. Seek the production process for sodium method bleaching powder - HCBBS Forum
56. Factors affecting the ash fusion point and slagging tendency of coal - HCBBS Forum
57. Why is a fixed ball valve chosen at the lower leg piping connection? - HCBBS Forum
58. LNG production from coke oven gas with co-production of methanol: the issue of liquid nitrogen pre-cooling for LNG storage tanks - HCBBS Forum
59. Regarding the fire hazard classification of hydrogen peroxide - HCBBS Forum
60. There is an additional partition groove on the tube sheet; what is the best way to deal with this? - HCBBS Forum
61. Help! ! ! ! Help! ! ! How to calibrate a diaphragm gauge - HCBBS Forum
62. When can calcium chloride be used in water treatment? - HCBBS Forum
63. In what applications are large-diameter pneumatic triple unions used? - HCBBS Forum
64. What is flooding in tower equipment? - HCBBS Forum
65. (High-pressure vessels) What are the design standards for high-pressure vessels? - HCBBS Forum
66. In a wet hydrogen sulfide environment with high concentrations, what type of pipeline should be used? - HCBBS Forum
67. 【Daily Question】Multiple-choice question 11.7 Valves dedicated to austenitic stainless steel equipment or pipelines that do not require maintenance - HCBBS Forum
68. Shanxi’s first alkylation unit was officially put into operation - HCBBS Forum
69. Energy conservation and emission reduction in daily life (I) - HCBBS Forum
70. Issues regarding fixed-roof storage tanks and submersible level gauges - HCBBS Forum
71. For the Y-type filter on the liquid ammonia pipeline, what type of gasket is suitable to use at the lower outlet of the filter? - HCBBS Forum
72. Limited boost from CP; domestic gas still has a long way to go - HCBBS Forum
73. What are the exposure conditions for occupational hazards? - HCBBS Forum
74. 【Daily Question】Question from Issue 20151109 - HCBBS Forum
75. Fluid mechanics problems - HCBBS Forum
76. Environmental Protection Daily Quiz 11.12: Participate for prizes; 3 correct answers and another 3 prizes will be given - HCBBS Forum
77. Discussion on the definition of flow velocity in the outlet pipe of acetylene compressors - HCBBS Forum
78. 【Daily Question】11.10 Multiple-choice question: Gas analysis must be conducted on towers and storage vessels before hot work is carried out; when the total amount of flammable gases ≯（ - HCBBS Forum
79. Prospects for the 13th Five-Year Plan: Where lies the path to innovation in coal chemical industry? - HCBBS Forum
80. What is the type of frequency control signal for the pump? - HCBBS Forum
81. Intelligent automated instrument control - HCBBS Forum
82. Under what circumstances is it necessary to install a gas collector on a differential pressure flow meter? - HCBBS Forum
83. 【Daily Question】Question from Issue 20151111 - HCBBS Forum
84. Let’s discuss how to translate this - HCBBS Forum
85. Coating production process - HCBBS Forum
86. Design pressure of the acetonitrile solvent tank - HCBBS Forum
87. What are the routine inspection items for a reciprocating compressor? - HCBBS Forum
88. Seeking samples for Johnson network - HCBBS Forum
89. Bedding testing----many well-known brands have been affected” - HCBBS Forum
90. 【Daily Question】What is the comparison between the vaporization rate of a thermal siphon reboiler and that of a tank reboiler on November 6th? - HCBBS Forum
91. thermocouple - HCBBS Forum
92. Heat network heater calculation - HCBBS Forum
93. May I ask what procedures and formats are used for project registration, such as fire safety inspections? - HCBBS Forum
94. What type are the sulfur pressure gauges used by marine friends? Is it useful? - HCBBS Forum
95. Explosion and fire at the polyethylene wax plant of Marcus Oil & Chemical Company in the United States - HCBBS Forum
96. Catalytic closed-system start-up and shutdown plan - HCBBS Forum
97. 【Popular Science Tips on Polymers and Materials】--013 Popular Science Tips on the Everyday Uses of Plastic Bags + ljtjbx - HCBBS Forum
98. 【Daily Question】11.16 Multiple-choice question: When ferrous sulfide comes into contact with air, it will undergo ( ) - HCBBS Forum
99. 【Daily Question】Question from Issue 20151110 - HCBBS Forum
100. 【Daily Question】Question from 20151113 - HCBBS Forum