English — Forum #723 (Page 560/642)

1. Which certificate is the most useful? - HCBBS Forum
2. Seek the electronic version of “Questions and Answers on Flue Gas Desulfurization, Dust Removal, and Nitrogen Oxide Removal Technologies in Catalytic Cracking”, authored by Gong Wangxin - HCBBS Forum
3. Pressure vessel safety accessories - HCBBS Forum
4. Which software is used for the hydraulic calculations of extraction towers (liquid-liquid extraction)? - HCBBS Forum
5. 【Daily Question】August 10 – Judgment on balance methods for rotor vibration (80 points for participation + 2 points, plus 3–8 points for correct answers)…… - HCBBS Forum
6. Accident Handling 19: What are the causes of blockage in the return feeder of a circulating fluidized bed boiler? - HCBBS Forum
7. Steam heat storage tank - HCBBS Forum
8. Liquid level control method for thin-film evaporators - HCBBS Forum
9. Leak detection of heating coils inside containers - HCBBS Forum
10. Regarding design institutes for alkylation - HCBBS Forum
11. High-throughput tube, high-throughput tube heat exchanger, overview - HCBBS Forum
12. Chit-chat---Bedding supplies - HCBBS Forum
13. What viscosity of lubricant base oil can be produced from hydrocracking tail oil - HCBBS Forum
14. Why is the catalyst in the tower installed in sections? Can’t it be installed all at once? - HCBBS Forum
15. 【Daily Question】August 19 – Multiple-choice question: Distillation tower (2 wealth points for a reply, plus 3–8 wealth points for a correct answer) - HCBBS Forum
16. Which company can supply DN30 double-layer multi-wave stainless steel bellows? - HCBBS Forum
17. 【Daily Question】Chemical Engineering Principles 138: Stagnant Flow (August 11) - HCBBS Forum
18. How to import and view project configurations in the Foxboro 8.3 virtual machine - HCBBS Forum
19. The settlement ratio has dropped to just 20; the supernatant is very clear, and the effluent also meets the standards with clear water. Under microscopic examination, it seems there are fewer microorganisms than before... - HCBBS Forum
20. Who has dealt with the chain connection of the DCS? It has been removed, but the pump still doesn’t start. Who knows what the reason is? - HCBBS Forum
21. How can high-temperature heat exchangers be prevented from leaking? - HCBBS Forum
22. Regarding the significant fluctuations in coke ash content - HCBBS Forum
23. Given the levels of sodium ions and chloride ions in water, how can the sodium chloride content be determined? I need the guidance of experts! - HCBBS Forum
24. Note: Real exam questions from 2010, Knowledge section, afternoon session, question 64 - HCBBS Forum
25. How to distinguish the upper part from the upper corner in a cable tray assembly? - HCBBS Forum
26. What material is used for sodium chloride? - HCBBS Forum
27. Does storing the DMTO catalyst under high carbon content have any impact on the catalyst itself and its subsequent use? - HCBBS Forum
28. What should new employees in the process systems department of a design institute do? - HCBBS Forum
29. 【Daily Question】20150817 – Coal-related knowledge (2 wealth points for replies, plus additional 3 wealth points for correct answers) - HCBBS Forum
30. What does the inlet recycled hydrogen concentration refer to in the calculation of the hydrogen partial pressure in a hydrogenation unit? ? - HCBBS Forum
31. Installation methods for high-pressure ball valves, quick connectors, and sleeve-type pipe fittings - HCBBS Forum
32. Recommendations for domestic natural gas stove manufacturers - HCBBS Forum
33. Shenhua’s coal-to-olefins projects - HCBBS Forum
34. How can line breaking be achieved in an excLE cell? Are there any shortcut keys? - HCBBS Forum
35. Does anyone have a download link for the Chinese version of AUTOCAD for WINDOWS 7? - HCBBS Forum
36. Please talk about how to clean the sulfolane storage tanks in various plants - HCBBS Forum
37. 【Daily Question】2015.08.17 Cover (Top 100 replies + 2 wealth points; extra 3–8 wealth points for correct answers) - HCBBS Forum
38. Reasons for vibration during equipment operation - HCBBS Forum
39. The air tank in front of the coal grinder’s pneumatic clutch and related equipment are severely contaminated with water; how to resolve this issue? - HCBBS Forum
40. On the establishment of safety management organizations in parent companies and subsidiaries - HCBBS Forum
41. The issue of CO2 removal in low-temperature processes - HCBBS Forum
42. Major and minor accidents that have occurred during the operation of space furnaces, Shell furnaces, and Texaco furnaces, as well as the processes for identifying and dealing with such accidents - HCBBS Forum
43. Who knows what the dew point temperature of 3.5 MPa steam is - HCBBS Forum
44. How to remove tar from the equipment - HCBBS Forum
45. Emergency nitrogen storage tank for air separation - HCBBS Forum
46. Issue of distance between buried tanks and roadsides - HCBBS Forum
47. Bizarre proofs keep appearing – how can you prove that you’ve worked hard? - HCBBS Forum
48. What is the difference between C/S network mode and peer-to-peer C/S network mode? - HCBBS Forum
49. Chemical companies from all over gather in Shanghai! ICIF 2015, the 14th China International Chemical Industry Exhibition (Shanghai) - HCBBS Forum
50. Five steps to stop losing track of literature - HCBBS Forum
51. May I ask what distance is referred to as the submersion depth of a submersible pump? - HCBBS Forum
52. Accident Handling 17: What are the factors that affect the wear of the tube walls in the heating surfaces of circulating fluidized bed boilers? - HCBBS Forum
53. What is the preferred gasification technology for coal-based fuel gas? - HCBBS Forum
54. 【Daily Question】August 17: Judgment on pump vibration (first 80 participants get +2; those who answer correctly receive an additional 3–8 units of wealth) - HCBBS Forum
55. The output of the gas steam boiler is far from sufficient. Please analyze - HCBBS Forum
56. Seeking expert help to solve it - HCBBS Forum
57. Considering the chemical plant explosion in Tianjin, is it necessary to create disaster recovery backups for some of the records in the control system? - HCBBS Forum
58. 【Daily Question】How to correctly associate directed and undirected directions - HCBBS Forum
59. 8 years of experience in pressure vessel design, seeking a job - HCBBS Forum
60. How to deal with a high settling ratio in the aerobic tank - HCBBS Forum
61. What furnace type to choose for coal-to-hydrogen production? - HCBBS Forum
62. The function of the return condensate valve when heating the material and when stopping the heating process - HCBBS Forum
63. Welding process for nickel-based alloy composite tanks - HCBBS Forum
64. Oxygen-to-coal ratio issue? - HCBBS Forum
65. I would like to ask the experts about methods for temperature control in jacketed reactors. - HCBBS Forum
66. Pilot study on polymethoxymethane (DMMn) - HCBBS Forum
67. Methanol Weekly Topic: What are the reasons for high levels of congeners? 2015.08.09--08.16 - HCBBS Forum
68. 【Basic Knowledge of Terminology Explanations for “Polymers and Materials”-023】Terminology explanations related to polymers - HCBBS Forum
69. 【Daily Practice 1】Boiler Multiple-Choice Questions 1 (Scores will be given to the top 30.) ） - HCBBS Forum
70. Water pressure of 800# valve - HCBBS Forum
71. Invest in companies that produce chemical-related equipment - HCBBS Forum
72. Regarding the Grich grid, I hope you can help answer it~ - HCBBS Forum
73. 【Daily Question】August 16: Tail combustion in catalytic cracking regenerator - HCBBS Forum
74. Can loading at the road level of the refined oil depot be carried out on both sides of the fueling island, with the front of the vehicle facing away from the depot area and away from the exit? - HCBBS Forum
75. Boiler foundation questions: Glossary explanations (a certain score will be given to the top 30) - HCBBS Forum
76. Can the defatted alkaline solution be discharged on-site after being neutralized with acid to achieve a pH of 8? - HCBBS Forum
77. The specific meaning of the controller suffix in Eastern Simulation accident handling - HCBBS Forum
78. What is a common materials station? How exactly should it be set up? - HCBBS Forum
79. Sign-in record post from August 15, 2015 - HCBBS Forum
80. Fire separation distances for oil and gas pipelines within petrochemical enterprises - HCBBS Forum
81. What exactly is a process? - HCBBS Forum
82. After being left for an extended period, the color of the ammonia-vaporized wastewater begins to turn black - HCBBS Forum
83. Natural gas light hydrocarbon recovery process - HCBBS Forum
84. What are the stages of coagulation? What are the functions? - HCBBS Forum
85. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 281 - HCBBS Forum
86. How to choose a laminating machine - HCBBS Forum
87. Production standards for diaphragm pressure gauges - HCBBS Forum
88. What are the common faults of rotor pumps? - HCBBS Forum
89. Water content in C4 - HCBBS Forum
90. 【Daily Question】Principles of Chemical Engineering 145: Water Vapor Partial Pressure in Air (August 18) - HCBBS Forum
91. What precautions should be taken when storing standard solutions? - HCBBS Forum
92. how to translate spool - HCBBS Forum
93. What type of filtration method does an activated carbon filter belong to, and describe its filtration mechanism? - HCBBS Forum
94. Seeking help with the replacement of pressure gauges and details regarding calibration; those who have participated in skill competitions, please offer some advice - HCBBS Forum
95. What serious consequences could arise if hydrogen leaks and catches fire, with the fire department using foam to extinguish it? - HCBBS Forum
96. Chemical Engineering in Daily Life - Question 10 - Standard answers available - HCBBS Forum
97. Distillation recovery concentration and energy consumption - HCBBS Forum
98. I have a question about valves that I don’t quite understand; I hope an expert can help answer it - HCBBS Forum
99. Ammonia solution issue - HCBBS Forum
100. Let’s discuss the measures to prevent corrosion in heat exchangers - HCBBS Forum