English — Forum #723 (Page 451/642)

1. Background knowledge on the controversial oil blending and oil quality - HCBBS Forum
2. What is the impact of the reflux ratio on distillation operations? - HCBBS Forum
3. Reasons for the overly fast flocculation speed of PAM and PAC and solutions - HCBBS Forum
4. New low-temperature storage tank put into operation - HCBBS Forum
5. Differences between desulfurization of gasoline and liquefied petroleum gas - HCBBS Forum
6. Ethylene oxide compressor - HCBBS Forum
7. The issue of painting the hydrogen main pipe and the wet chlorine main pipe - HCBBS Forum
8. Issues with reconditioning the UOP regeneration section - HCBBS Forum
9. 【The “Post-Oil Era” May Arrive Late】 - HCBBS Forum
10. Everyone, take question 70-2015 from the First-Class Constructor Examination’s \"Project Management\" section – it’s a multiple-choice question numbered 56; there will be a reward for those who answer it correctly - HCBBS Forum
11. Which type of catalyst market is currently performing well in China? - HCBBS Forum
12. RS485 communication issues - HCBBS Forum
13. Problem with taking the square root of differential pressure measurement? - HCBBS Forum
14. How to put a jet pump into operation - HCBBS Forum
15. Is the electrical industry mainly focused on power generation? - HCBBS Forum
16. 【Daily Question】11.19 Multiple-choice question: The bending of furnace tubes in heating furnaces mainly occurs at - HCBBS Forum
17. Questions regarding the design specifications for SHT3007 petrochemical storage and transportation tank areas - HCBBS Forum
18. Regarding the issue of gauge pressure meter migration - HCBBS Forum
19. Prolonged sitting harms the kidneys – how can working women strengthen their kidneys? - HCBBS Forum
20. Reformation catalyst chlorine content - HCBBS Forum
21. When accelerating the flocculation of suspended solids in flue gas desulfurization wastewater, is it necessary to add both a flocculant and a coagulant simultaneously? - HCBBS Forum
22. Urgently seeking the testing methods for the desulfurization solution in the ammonia-based desulfurization process of coke oven gas - HCBBS Forum
23. 【Daily Question】Question from Issue 20151117 - HCBBS Forum
24. 【Daily Question】11.18 True or False: If the dry point of a distillate is high, then its freezing point is also high - HCBBS Forum
25. Besides centrifugal pumps, are there positive-displacement pumps for shielded pumps? - HCBBS Forum
26. The issue of burying salt and acid pipelines under highways - HCBBS Forum
27. 【Popular Science Tips on Polymers and Materials】--32 “Resin glasses”: Polymeric materials used in glasses worn on the eyes + People watching the sea - HCBBS Forum
28. What is the function of the pre-distillation tower and what are its main parameters? - HCBBS Forum
29. What does it feel like to forget your phone at home? - HCBBS Forum
30. Knowledge on glass lining failure and repair of glass-lined reactors - HCBBS Forum
31. What do the blast disc and clamp model numbers represent? - HCBBS Forum
32. Handling of expired bounties - HCBBS Forum
33. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 221 - HCBBS Forum
34. What is the purpose of tertiary treatment in general municipal wastewater treatment plants? - HCBBS Forum
35. Replace the nozzle - HCBBS Forum
36. Axis vibration problem - HCBBS Forum
37. 【Daily Question】November 23, 2015: Theoretical model for calculating tube sheet strength (first 60 participants + 2 rewards) - HCBBS Forum
38. pH control of hydrofluoric acid wastewater - HCBBS Forum
39. Coefficient of friction - HCBBS Forum
40. 【Daily Question】November 23rd Reply +2； To +3 - HCBBS Forum
41. 【Daily Question】11.20 True or False Question - HCBBS Forum
42. Axial flow conical suction chamber - HCBBS Forum
43. The world is embracing the energy revolution; shale gas could disrupt the oil and gas market - HCBBS Forum
44. I would like to ask everyone for the application data of 13X-APG-Ⅲ type molecular sieves - HCBBS Forum
45. Selection of equipment flanges under vacuum conditions - HCBBS Forum
46. On “Tea and Being a Person”” - HCBBS Forum
47. What are the corrosion inhibitors for closed-loop cooling water systems? - HCBBS Forum
48. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 222 - HCBBS Forum
49. What is the difference between 【Control Cables】 and 【Computer and Instrument Cables】? - HCBBS Forum
50. Solutions to the conflict between flange insulation in the production process to prevent coulombic corrosion and anti-static bonding - HCBBS Forum
51. It is very important to take good care of the laptop power adapter. - HCBBS Forum
52. Static electricity alarm - HCBBS Forum
53. Can the water flow rate be estimated just by knowing the pressure difference and pipe diameter? - HCBBS Forum
54. I have a question regarding the installation foundation for high-speed dispersers - HCBBS Forum
55. Who has the full text of the paper titled “Design of a Plant for the Annual Production of 30,000 Tons of Caprolactam”? - HCBBS Forum
56. How do the pneumatic valves on the equipment work? - HCBBS Forum
57. Interference in the 4-20mA signal feedback from on-site instruments (causes and solutions) - HCBBS Forum
58. What are some good manufacturers of gas separation membranes? - HCBBS Forum
59. Method for replacing the riser tube installed on the focal side - HCBBS Forum
60. Color of lubricating oil - HCBBS Forum
61. Civil Engineering Structure Discussion Area ---- [Daily Question] Question from the 20151117 issue - HCBBS Forum
62. Where are there regenerative coke ovens with two or three heating sections? Where is negative pressure benzene removal available? - HCBBS Forum
63. 【11.19-25 Weekly Question】+1 to Wealth, +5~20 to Wealth if correct - HCBBS Forum
64. I would like to ask how the amount of compressed air required for SNCR denitration is calculated - HCBBS Forum
65. Are the employee dormitories in chemical plants considered civilian buildings? - HCBBS Forum
66. Integrated continuous wastewater treatment system - HCBBS Forum
67. Current Status and Trends in Energy Conservation for General Machinery Products - HCBBS Forum
68. What should employees do if they develop an occupational disease? - HCBBS Forum
69. Environmental Protection Daily Quiz: November 18 – Participate for prizes; 3 correct answers and you’ll get another 3 as a reward - HCBBS Forum
70. hydrocracking - HCBBS Forum
71. Everything that passes by counts as a sight - HCBBS Forum
72. Looking for a motion simulation video of a double-acting control valve (with the air path shown) - HCBBS Forum
73. Gum tube for loading the gas-water separation and initial tar separation unit - HCBBS Forum
74. Electrodesalination water injection - HCBBS Forum
75. Problems with calculation results - HCBBS Forum
76. What are fire protection technical measures? - HCBBS Forum
77. 【Coal-to-Natural Gas】(Weekly Topic 11/16-11/22) What are the current projects under construction or already in operation for converting coke oven gas into natural gas? - HCBBS Forum
78. One question per day (1124) - HCBBS Forum
79. The issue of gums in oils - HCBBS Forum
80. The boiler is leaking - HCBBS Forum
81. How to learn the routine maintenance of field instruments within one or two months - HCBBS Forum
82. 【Daily Question】Question from Issue 20151119 - HCBBS Forum
83. Inventory of the valves used in coal-to-oil production - HCBBS Forum
84. 【Weekly Topic】The height-to-diameter ratio issue in different types of gasifiers - HCBBS Forum
85. Is there any SIS system in which all DI points are isolated using relays (or isolators)? - HCBBS Forum
86. 【Weekly Question】+9 for correct answers, +2 for participation； Close this post on Sunday - HCBBS Forum
87. What is low-NOx boiling combustion? - HCBBS Forum
88. Speculations on professional exams - HCBBS Forum
89. Working methods at chemical engineering design institutes - HCBBS Forum
90. Methods for repairing surface corrosion on stainless steel - HCBBS Forum
91. After graduating from undergraduate studies and starting work, how should one learn chemical engineering English?* - HCBBS Forum
92. Is this sulfuric acid system turned on? ? - HCBBS Forum
93. Evaporation volume issues in spray drying towers - HCBBS Forum
94. Is nitrogen purging necessary before starting up a chemical plant? Are there any regulatory requirements? - HCBBS Forum
95. Are mass flow meter sensors that delicate? - HCBBS Forum
96. Flowmeter calibration procedure - HCBBS Forum
97. [Share Tencent News] It would take 50 billion to possibly relocate a state-owned chemical company - HCBBS Forum
98. Methanol Weekly Topic: What are the differences between methanol centrifugal compressors and reciprocating compressors? 2015.11.16--11.23 - HCBBS Forum
99. Calculation and analysis of the molecular weight of cycle hydrogen in gasoline hydrorefining - HCBBS Forum
100. Liquid nitrogen washing section - HCBBS Forum