English — Forum #723 (Page 10/642)

1. Is it necessary to install automatic sprinklers in the duty dormitory building as in a hotel? - HCBBS Forum
2. Electrical safety books - HCBBS Forum
3. Silane venting - HCBBS Forum
4. Current operating status of coal-based ethylene glycol - HCBBS Forum
5. Seeking new projects; investment can reach 100 million yuan - HCBBS Forum
6. PLC power supply - HCBBS Forum
7. What are the typical ranges for the flash point, ignition point, and auto-ignition point of Changyi No.1 oil? - HCBBS Forum
8. Precision media filter - HCBBS Forum
9. How should one prepare for the professional certification exam for the first time? - HCBBS Forum
10. Operation of the reboiler in the fractionation tower - HCBBS Forum
11. 【Daily Question】2015.07.13 Pitting (Top 100 replies +2 points, plus 3-8 additional points for correct answers) - HCBBS Forum
12. 【Daily Question】Question from Issue 20151023 - HCBBS Forum
13. I would like to ask what products come out of the top and bottom of the distillation tower after the crude methanol is distilled - HCBBS Forum
14. Desulfurization treatment of coal charging flue gas and coke discharge flue gas - HCBBS Forum
15. Thermoflow software - HCBBS Forum
16. Metal pretreatment process - sandblasting - HCBBS Forum
17. How to use a falling film evaporator in Aspen Plus? - HCBBS Forum
18. Mother liquor water pH value - HCBBS Forum
19. Fluctuations in the control valve of the Siemens positioner - HCBBS Forum
20. How are the diameter and height of the desulfurization tower in a dry desulfurization unit determined, and how is the weight of the desulfurizing agent determined? - HCBBS Forum
21. 【Daily Question】Chemical Engineering Principles 191: Absorbents (October 3) - HCBBS Forum
22. 【Weird Safety Hazards Season 2】Summary Post - HCBBS Forum
23. 【Popular Science on Polymers and Materials】--A detailed explanation of the functions of additives in polymer materials; worth sharing as popular science content +ljtjbx - HCBBS Forum
24. What is the principle behind the pressure stabilizing tank next to the steam turbine? - HCBBS Forum
25. Design issues of natural circulation reboilers - HCBBS Forum
26. Issues regarding the welding of reinforcement rings - HCBBS Forum
27. Solid particles during sedimentation separation: formulas for the volume and surface area of spherical particles - HCBBS Forum
28. For environmental protection projects, how can an oil-water separation tank be designed by referring to the design of an oil-water separator? - HCBBS Forum
29. 【Picture of the Day】2016 11 11 What is the main device in this picture? - HCBBS Forum
30. Various pressures related to heat exchangers - HCBBS Forum
31. Application of the CWL-M type centrifugal extractor solvent extraction method in the deep processing of tea - HCBBS Forum
32. A friend from abroad wants to start a boiler factory and is seeking advice from experts in the boiler industry - HCBBS Forum
33. Discussion on HCN treatment issues in the purification section? - HCBBS Forum
34. Ferrous sulfate – benefits for gardening - HCBBS Forum
35. What are the differences between personal and corporate verification on Sina Weibo? - HCBBS Forum
36. Moisture analysis - HCBBS Forum
37. Are the flanges installed at the inlets and outlets on chemical processing vessels considered equipment flanges or pipeline flanges? - HCBBS Forum
38. Briefly describe the role of the reflux liquid in the distillation separation process? - HCBBS Forum
39. 【Daily Topic】【Engineering Version 20160913】 - HCBBS Forum
40. Dear sea friends, how should we understand this concept of NPSH regarding centrifugal pumps? - HCBBS Forum
41. Joint Learning*1119: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
42. Coking in the large oil and vapor line at the top of the coke tower - HCBBS Forum
43. What pressure is required for the purge gas source for new plant pipelines, and what are the precautions? - HCBBS Forum
44. Control of dissolved oxygen levels in industrial circulating water - HCBBS Forum
45. 【Joint Study*】【Civil Engineering Version 20160220】 - HCBBS Forum
46. Pressure density issues when using vortex flowmeters to measure gases - HCBBS Forum
47. Posting can earn participation points - HCBBS Forum
48. 【New Energy Development】Riverbed Power Station: A new approach utilizing tidal energy - HCBBS Forum
49. ★Haichuan’s “Thanksgiving Season” Grand Event ★ Please have regional managers submit high-quality event posts - HCBBS Forum
50. Profits from downstream products of propylene - HCBBS Forum
51. Seeking knowledge regarding nitrogen generators - HCBBS Forum
52. Sometimes the sulfur content in the oil we purchase from outside exceeds the specified limits; how should we deal with this? Are there any related additives? - HCBBS Forum
53. Share your golden egg-breaking records!~~~ - HCBBS Forum
54. 【Daily Question】Question from Issue 20150922 - HCBBS Forum
55. 【Daily Question】 2016 07 13 Hydrogenation Sector - HCBBS Forum
56. Regarding the issue of coke oven flue gas volume - HCBBS Forum
57. Urea: Will capacity really be reduced so quickly? - HCBBS Forum
58. Ask about how to prepare materials for on-site steel structure construction - HCBBS Forum
59. Do floating-head heat exchangers need to be equipped with exhaust and drain ports? - HCBBS Forum
60. I would like to ask about the method for separating toluene from n-hexane - HCBBS Forum
61. 1,2-cyclohexanediol glycidyl ether - HCBBS Forum
62. 【Daily Question】2.11 Classification of Corrosion-Resistant Materials (Reply +3 points; correct answer earns additional +3 to -8 points) - HCBBS Forum
63. Non-contact online pH measurement method - HCBBS Forum
64. Does the nitrogen in syngas need to be removed in the coal-to-methanol process? - HCBBS Forum
65. Diaphragm valves with a standard structure are not suitable for vacuum systems - HCBBS Forum
66. 【Picture of the Day】2016 05 05 What is the device in this picture? - HCBBS Forum
67. Can a fire dike for storage tanks be designed in a circular shape? - HCBBS Forum
68. Strengthening of equal-diameter branch pipes during main pipeline welding - HCBBS Forum
69. How much aromatic compounds can be extracted (produced) from a batch of naphtha? - HCBBS Forum
70. Can EDTA undergo complexation reactions under acidic conditions? - HCBBS Forum
71. Are there ball valves that can withstand temperatures of 1000–1200 degrees Celsius? - HCBBS Forum
72. Sign-in record post from December 20, 2015 - HCBBS Forum
73. Tables corresponding to the ratio D/d of the tower diameter to the nominal diameter of the packing - HCBBS Forum
74. Is the R2 license exam easy? - HCBBS Forum
75. Could some expert please tell me about the structure of Dura tubes? - HCBBS Forum
76. 【Daily Question】Question from Issue 20151109 - HCBBS Forum
77. The serious poisoning incident on \"10·18\" at Runheng Chemical Co., Ltd., Guangrao County, Dongying City, Shandong Province - HCBBS Forum
78. Seeking help regarding the error message in PDMS single-tube diagram - HCBBS Forum
79. Why does the temperature at the bottom of the tower decrease? - HCBBS Forum
80. molecular machines - HCBBS Forum
81. Classification of pressure vessels - HCBBS Forum
82. A tribute to the great watchmaker - HCBBS Forum
83. 【Daily Question No. 158】June 29, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
84. Seek electronic version of GB151-2014 interpretation - HCBBS Forum
85. Regarding the selection of accident quench water valves - HCBBS Forum
86. Around the time of my son’s middle school entrance exams, my dad’s job - HCBBS Forum
87. Pump purging issue - HCBBS Forum
88. Daily Water Treatment Question (11.28) - HCBBS Forum
89. What temperature can the nitrogen temperature reach after the liquid nitrogen vaporizer? - HCBBS Forum
90. What is the enterprise’s load? - HCBBS Forum
91. Turbine rotor positioning issue - HCBBS Forum
92. Problems with the remote control signal valve - HCBBS Forum
93. Regarding the secondary drying of sulfur production furnaces in sulfur recovery - HCBBS Forum
94. Current standards for hot-rolled lightweight steel - HCBBS Forum
95. Regarding the issues of hydrodesulfurization of kerosene and the upgrade to National V low-freezing-point standards, what is the sulfur content in kerosene after hydrogenation? - HCBBS Forum
96. Frontline managers should manage safety with the \"five hearts\" - HCBBS Forum
97. 【Daily Question No. 116】February 18, 2016: +2 wealth for participation, +3 wealth for a correct answer - HCBBS Forum
98. What are the main responsibilities of equipment technicians in the Equipment Engineering Department of the petrochemical industry? - HCBBS Forum
99. Purify low-methane parking - HCBBS Forum
100. On the selection of inlet filters for piston compressors - HCBBS Forum