English — Forum #723 (Page 577/642)

1. Blockage at the cone bottom of the primary tar separator - HCBBS Forum
2. 【Daily Question】August 6 – Reasons for pump vibration (First 80 participants get +2 points; an additional 3–8 points for correct answers)…… - HCBBS Forum
3. The pressure in the tube side of the heat exchanger is greater than the pressure in the shell side - HCBBS Forum
4. Does anyone have a tutorial for the Bolliger boiler software? ! - HCBBS Forum
5. Does the reflux volume of each column in the atmospheric and vacuum distillation sections affect the product quality? - HCBBS Forum
6. Quinoline distillation problem - HCBBS Forum
7. Can the variable frequency speed control of a pump only reduce the speed? Can’t it be upgraded in frequency? - HCBBS Forum
8. Heat exchanger cleaning: Scaling in heat exchangers and treatment methods - HCBBS Forum
9. Sources of occupational disease hazards and control methods - HCBBS Forum
10. The debate over collapse - HCBBS Forum
11. Does anyone know which technology is used by Shandong Jincheng Petrochemical for the production of needle coke? - HCBBS Forum
12. Should boiler standard manholes be used on pressure vessels? - HCBBS Forum
13. Regarding the full range of pressure difference at the slag outlet of the gasifier - HCBBS Forum
14. For the air swirl disc design in front of the burner, should one focus on the gas flow rate or the flow velocity? - HCBBS Forum
15. 【Daily Question】August 07, 2015 - HCBBS Forum
16. Relationship between catalyst carbon content and regeneration coking rate - HCBBS Forum
17. Energy management system - HCBBS Forum
18. Who can recommend manufacturers of sulfur furnaces? - HCBBS Forum
19. Reflux ratio of the reboiler at the bottom of the distillation column - HCBBS Forum
20. Analyze the reasons for the increased backwashing frequency of the side filter tank? How to handle it? - HCBBS Forum
21. Changes in the state of mixed refrigerants - HCBBS Forum
22. Common English abbreviations used in the engineering bidding process, along with their full forms & Chinese translations - HCBBS Forum
23. The issue of dissolved oxygen in flammable liquids - HCBBS Forum
24. How is the composite rigid plate material for the tower’s cylinder generally selected? - HCBBS Forum
25. How to claim safety expenses when production has stopped - HCBBS Forum
26. 【Daily Question】Chemical Engineering Principles 131: Distillation Operations (August 5) - HCBBS Forum
27. Cyclic hydrogen compressor shutdown - HCBBS Forum
28. Seeking help with some issues related to Tricon - HCBBS Forum
29. Which technology is used in Henan Nenghua Anyang’s 200,000 tons per year ethylene glycol project? - HCBBS Forum
30. Density meter selection - HCBBS Forum
31. Valve leakage class - HCBBS Forum
32. Issues with the version of the standards used in product production? - HCBBS Forum
33. 【Daily Question】Chemical Engineering Principles 132: Distillation Columns (August 6) - HCBBS Forum
34. Analysis of the Frontiers and Development Trends in Polymer Materials Research - HCBBS Forum
35. Negative pressure in the atmospheric pressure tower - HCBBS Forum
36. safety distance - HCBBS Forum
37. Baseline noise of phase chromatograph (FID detector) - HCBBS Forum
38. Questions regarding single-tube mass flow meters - HCBBS Forum
39. One question per day (top 20 get +2 wealth automatically) - HCBBS Forum
40. Survey and statistics on urea hydrolysis systems - HCBBS Forum
41. Do people who change jobs frequently get promoted quickly? - HCBBS Forum
42. Which company has clean waste sulfuric acid at around 30% concentration? - HCBBS Forum
43. Regarding throttling - HCBBS Forum
44. MIBK technology - HCBBS Forum
45. How to check if the amount of water added during hydrogenation is sufficient? Is the test item ammonium salts? What is the indicator? - HCBBS Forum
46. Installation method of the Y-type filter in the steam trap bank of the condensate recovery system - HCBBS Forum
47. How is corrosion at the welds of a tower usually repaired? - HCBBS Forum
48. I have a few questions regarding forced thermosiphon heat exchangers; please ask an expert for help - HCBBS Forum
49. Share a sentence I learned - HCBBS Forum
50. Seeking a heat exchanger process design firm - HCBBS Forum
51. How to study case analysis for safety engineers?* - HCBBS Forum
52. I am planning to purchase a Roots blower. What is the noise level like once a sound insulation enclosure is installed? - HCBBS Forum
53. Treatment of third phases in hydrometallurgy - HCBBS Forum
54. How high a temperature can the human body tolerate? - HCBBS Forum
55. What are the causes of excessive Na ions in steam, and what impacts does it have? - HCBBS Forum
56. Why aren’t the images uploaded to Haichuan automatically annotated with the Haichuan logo? - HCBBS Forum
57. How do circulating fluidized bed boilers prevent the steam drum from going ‘dry’ in the event of a loss of plant power? - HCBBS Forum
58. Online inspection of buried double-layer pipelines in gas stations - HCBBS Forum
59. Application areas of pneumatic diaphragm pumps - HCBBS Forum
60. Analysis of the reasons for increased steam flow and decreased vacuum in steam turbines - HCBBS Forum
61. Roof fan - HCBBS Forum
62. Regarding the use of the Mengmoke demister - HCBBS Forum
63. Pump body vibration - HCBBS Forum
64. Basis for selecting piping materials in the low-temperature methanol washing process - HCBBS Forum
65. Oxygen tank cleaning - HCBBS Forum
66. 【Daily Question】2015.07.30 Scope of monitoring (first 100 replies + 2 wealth points; additional 3–8 wealth points for correct answers) - HCBBS Forum
67. What is the impact of ammonia in gas on PSA? Thank you - HCBBS Forum
68. How to ensure the quality of chemical translation and produce a high-quality translation of chemical texts? - HCBBS Forum
69. Assessment of the degree of poisoning by toxic and harmful gases in the workplace - HCBBS Forum
70. The impact of the 2015 new policies on environmental impact assessment and approval processes - HCBBS Forum
71. I would like to ask about the methods for adjusting the travel of control valves - HCBBS Forum
72. How is the business of styrene at Xinyang Technology? - HCBBS Forum
73. Weekly topic: 8 wealth points for those who answer correctly, 2 wealth points for participation； Question 129 - HCBBS Forum
74. 【Daily Question】Chemical Engineering Principles 125: Water Absorbing CO2 from the Air (July 30) - HCBBS Forum
75. Looking for videos on submersible sewage pump repair - HCBBS Forum
76. Problems with temperature measuring instruments - HCBBS Forum
77. I would like to ask if anyone has experience operating parallel air compressors? - HCBBS Forum
78. Disagreements regarding the startup procedure of the compressor - HCBBS Forum
79. Weighing of the mixing tank Weighing of the mixing tank Weighing of the mixing tank - HCBBS Forum
80. 【Daily Question】August 2: H2/CH4 ratio in the dry gas of the catalytic cracking unit - HCBBS Forum
81. Teacher Mirook, where are you? May I ask what the vibration acceleration standards are required for preventive maintenance? - HCBBS Forum
82. 【Basic Knowledge of Terminology Explanations for “Polymers and Materials”-008】Terminology explanations related to polymers - HCBBS Forum
83. Regarding signing in to claim prizes - HCBBS Forum
84. Catalysis – frequent evacuation of the liquefied gas pump due to instability - HCBBS Forum
85. Daily Question 2015.8.7 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question) - HCBBS Forum
86. I need help from experts to calculate calories. Given that the flow rate of the regenerated gas is 75,000 standard cubic meters and its temperature is 175 degrees, how can the heat amount be calculated? - HCBBS Forum
87. YTQZD series high-temperature gas purification systems - HCBBS Forum
88. Switching from processing straight-run gasoline to processing catalytic reformate did not yield good results - HCBBS Forum
89. Alkali solution pipeline on the oxygen side of water electrolysis for hydrogen production - HCBBS Forum
90. Selection of material for 40%*ao acid valves - HCBBS Forum
91. Emerson DELTA V - HCBBS Forum
92. 【Daily Question】August 1: Three-way valve for the distillation column bottom slurry in the catalytic cracking unit - HCBBS Forum
93. Emerson Headhunting Company: Urgently seeking an Electrical and Instrumentation Engineer with excellent English skills - HCBBS Forum
94. China Coking Industry Magazine - HCBBS Forum
95. 【Basic Knowledge of Glossary Definitions for “Polymers and Materials”-014】Glossary definitions related to polymers - HCBBS Forum
96. Saturated steam jet pressure reduction - HCBBS Forum
97. List of First-Class Enterprises for Standardization of Safe Chemical Production in the Second Batch - HCBBS Forum
98. Why is a one-way throttle valve added to the steam valve? - HCBBS Forum
99. What kind of ink is used to print on plastic bags by these heroes? - HCBBS Forum
100. What does the 21 in the heat exchanger model AJ21S mean? - HCBBS Forum