English — Forum #723 (Page 523/642)

1. Issues related to pH meter selection and the process - HCBBS Forum
2. What is the purpose of returning a stream of crude methanol from the saturated tower top in methanol synthesis? - HCBBS Forum
3. Energy consumption statistics and calculation in production workshops - HCBBS Forum
4. Have you come across any chemical companies in Qingdao? - HCBBS Forum
5. Is benzene suitable for measuring with radar level gauges? - HCBBS Forum
6. 【Daily Question】Question from Issue 20150918 - HCBBS Forum
7. Looking for instructions for a biological deodorization device - HCBBS Forum
8. Control valve - HCBBS Forum
9. Analysis of the reasons for crane hook rotation - HCBBS Forum
10. Consultation on exams - HCBBS Forum
11. Treatment methods for liquefied gas storage tanks - HCBBS Forum
12. Inspection issues with the furnace tubes in the hydrogenation feed furnace - HCBBS Forum
13. Can flange bolts be tightened under pressure during a hydrostatic test? - HCBBS Forum
14. Signed for and on behalf of – how to translate this - HCBBS Forum
15. 13 Five Coal Chemical Industry Plans - HCBBS Forum
16. What are the differences between quality certification in the chemical industry and biopharmaceuticals? - HCBBS Forum
17. Comprehensive utilization and treatment of catalytic slurry - HCBBS Forum
18. Discussion on the daily question regarding the structural formula of ethylene - HCBBS Forum
19. MSDS for coal tar processed products - HCBBS Forum
20. Why is alkaline desulfurization technology generally used for flue gas desulfurization in forced draft systems, rather than the ammonia-based method that is commonly employed in boilers?... - HCBBS Forum
21. Reformation pre-hydrogenation - HCBBS Forum
22. During the Mid-Autumn Festival and National Day holidays, how much overtime pay can you get? - HCBBS Forum
23. 【Daily Question】 September 23: What is the step voltage that the human body can tolerate? ? ? - HCBBS Forum
24. Bearing classification, principles, and applications in practical equipment (including animations) - HCBBS Forum
25. The Super Bounty Section event is now in full swing! ! - HCBBS Forum
26. Operating/design pressure of 28% ammonia water storage tanks and operating pressure of transport tankers - HCBBS Forum
27. Share 10 recommended online English learning websites - HCBBS Forum
28. 【Environmental Management Divider>> Please upgrade after management is complete】Upgrade Express – Freelancer Bounties welcome! - HCBBS Forum
29. Axial force distribution problem in boiler feed water pumps - HCBBS Forum
30. To what extent should closed-loop water be replaced or partially refreshed? - HCBBS Forum
31. Regarding the preparation of project drawings - HCBBS Forum
32. 【Daily Question】Question from Issue 20150922 - HCBBS Forum
33. First-time usage guide for the heat-free regeneration desiccant dryer - HCBBS Forum
34. Blind flanges for inlet and outlet pipelines of the cold box - HCBBS Forum
35. What is the color of the water coming from a rusty pipe? - HCBBS Forum
36. The issue of fixing the metal wall temperature of the tube sheet - HCBBS Forum
37. What is the significance of carrying out safety production education and supervision over illegal activities in this area? - HCBBS Forum
38. Reducer issues - HCBBS Forum
39. Structure and main technical principles of flue gas recovers and flue gas economizers - HCBBS Forum
40. Regarding ground shorting - HCBBS Forum
41. disulfides - HCBBS Forum
42. Joint Study*: Categorized according to the different heat dissipation methods of heating systems - HCBBS Forum
43. Does the quench water in the gasifier serve as a jacket for cooling? - HCBBS Forum
44. Inquiry regarding instrument manufacturers - HCBBS Forum
45. BUG for receiving rewards online - HCBBS Forum
46. Is it necessary to publish papers to apply for the senior engineer title in the mechanical field in Beijing? - HCBBS Forum
47. Will the content of the Registered Chemical Engineer exam change? - HCBBS Forum
48. When dilute salt acid solutions are used to absorb ammonia to produce ammonium chloride, how much is the heat of reaction? - HCBBS Forum
49. September 17: Boiler Foundation, Question 34 – True/False Questions 6: (A certain score will be given to the top 40) - HCBBS Forum
50. Briefly describe the characteristics of marine pollution. - HCBBS Forum
51. Assembly problem - HCBBS Forum
52. Consultation: Domestic production capacity of coal-based ethylene glycol. Coal-to-ethylene glycol project and progress. - HCBBS Forum
53. 【Daily Question】9.21 Reply +2； To +3 - HCBBS Forum
54. 【Daily Question】9.18 Reply +2； To +3 - HCBBS Forum
55. How to select chromium-molybdenum steel resistant to hydrogen corrosion - HCBBS Forum
56. Steam coil leakage inside the large liquid sulfur tank - HCBBS Forum
57. Why is a fan installed at the top of the exhaust tower used to absorb chlorine gas emissions? - HCBBS Forum
58. Is the instability of a rigid cylinder under external pressure elastic or inelastic? - HCBBS Forum
59. Post management review activities - HCBBS Forum
60. 【Weekly Topic】Destination of Amine Solution During Shutdown for Maintenance - HCBBS Forum
61. Environmental Protection Daily Question 9.14: Participation earns a prize; correct answers earn an additional reward - HCBBS Forum
62. Seeking information on heating furnaces - HCBBS Forum
63. Which P&ID drawing software has statistical functions? - HCBBS Forum
64. 11. How to determine whether high turbidity is caused by an excessive dosage of chemicals or by an insufficient dosage. - HCBBS Forum
65. Problems with valves for toluene and benzyl chloride - HCBBS Forum
66. September 19: Boiler Foundation, Question 36 – True/False Questions 8: (A certain score will be given to the top 40) - HCBBS Forum
67. Seeking help due to shutdown of water washing tower - HCBBS Forum
68. Regarding the issue of the piston rod rising? - HCBBS Forum
69. What is the role of coal water slurry dispersants that are often added during the preparation of coal water slurry? - HCBBS Forum
70. Dear experts, if anyone has any materials on fan maintenance, please send them to me. Thank you! - HCBBS Forum
71. Hiring piping engineers - HCBBS Forum
72. 【Weekly Topic】Determinants of the height of a gasifier - HCBBS Forum
73. For pressure pipelines carrying flammable and explosive media, can supports be welded directly to the pipeline? - HCBBS Forum
74. What are the methods for producing methanol? - HCBBS Forum
75. Can the combustion process be simulated in Hysys to control steam temperature and fuel quantity? - HCBBS Forum
76. What documents are needed for the trial production acceptance? - HCBBS Forum
77. Potash alkali production in fixed-alkali boilers - HCBBS Forum
78. 【Daily Question】Chemical Engineering Principles 176: Equilibrium Curves (September 18) - HCBBS Forum
79. Why should new resins be pre-treated before use? - HCBBS Forum
80. What should employees do when their company is on the verge of bankruptcy - HCBBS Forum
81. Daily Question, September 20, 2015 (EIA Discussion): 3 wealth points for replies, plus 5 wealth points for correct answers (single-choice question) - HCBBS Forum
82. The pump cannot be rotated during the heating-up process of a heat pump; then when is it appropriate to rotate the pump? - HCBBS Forum
83. Need help? - HCBBS Forum
84. Difference between flange sizes SO25 and DN25 - HCBBS Forum
85. Weekly topic: 5 Wealth points for those who answer correctly, 2 Wealth points for participation； Question 177 - HCBBS Forum
86. ABBA DCS historical server restart error - HCBBS Forum
87. Regarding the issue of step-over tripping - HCBBS Forum
88. I have already obtained a senior professional title; what would be a good next step to take in terms of exams? - HCBBS Forum
89. Daily Question, 2015.9.19 (EIA Discussion): 3 Wealth points as a reward for replying, plus 5 Wealth points for the correct answer (single-choice question) - HCBBS Forum
90. You can claim rewards online – isn’t it possible to do so twice a day? - HCBBS Forum
91. 【Daily Question】Chemical Engineering Principles 177: Extraction Separation (September 19) - HCBBS Forum
92. Market conditions for liquid sulfur dioxide and compressor manufacturers - HCBBS Forum
93. Problem of unstable oil pressure in single-stage diaphragm compressors - HCBBS Forum
94. Reheating issue of cold box refrigerant - HCBBS Forum
95. How to operate infrared spectrometer software? - HCBBS Forum
96. Issues related to the labyrinth seal of compressors? - HCBBS Forum
97. What is falling film? - HCBBS Forum
98. Issues with vacuum pump motor power and speed! - HCBBS Forum
99. What are the requirements for sealing equipment after an LNG plant stops operating? - HCBBS Forum
100. Daily Question, 2015.9.18 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question) - HCBBS Forum