English — Forum #723 (Page 482/642)

1. A/0 retention time and assistance regarding the sludge thickening tank - HCBBS Forum
2. Precautions for starting the pump - HCBBS Forum
3. Summary Materials on Hydrorefining, Word Version (3) - HCBBS Forum
4. What are the common faults of tower-type equipment? - HCBBS Forum
5. Alcohol content and classification of hazardous materials - HCBBS Forum
6. Question 67 on Boiler Foundations, October 20: (A certain score will be given to the top 40) - HCBBS Forum
7. Wastewater treatment - HCBBS Forum
8. What are the commonly used parameters for environmental quality assessment? - HCBBS Forum
9. The flow rate of the isolation gas for the dry gas seal of the turbine compressor is normal; what’s the reason for oil being present in the cylinder drainage lines? - HCBBS Forum
10. Loading of light oil products - HCBBS Forum
11. Rotary flow meter - HCBBS Forum
12. Some issues in using the hydrolysis-acidification + A/O process for treating wastewater with high COD and high ammonia nitrogen levels - HCBBS Forum
13. Hydraulic testing of jacketed vessels - HCBBS Forum
14. ☆☆☆The complete set of documents for a large-scale project - HCBBS Forum
15. Who knows if there will be a restructuring meeting? When will it open this year? - HCBBS Forum
16. Oil Price Morning Report: Crude oil futures drop sharply - HCBBS Forum
17. Clogging of nozzles in the burner slurry channel - HCBBS Forum
18. The booster has stopped – how can the re-contact pressure be adjusted? - HCBBS Forum
19. Joint Learning*1020: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
20. How to manage troublemakers within a company? - HCBBS Forum
21. Briefly describe the structure of the Lurgi tube methanol synthesis reactor. - HCBBS Forum
22. Why is hydraulic calculation required for air ducts? - HCBBS Forum
23. Differences among seawater desalination, softening, and desalting technologies - HCBBS Forum
24. What are the components of target management for safe production? - HCBBS Forum
25. How to define the production of hazardous chemicals - HCBBS Forum
26. How to improve people’s social and workplace psychology: A huge boost in charisma - HCBBS Forum
27. Why is it reasonable to use an orifice plate to measure flow rate, with the orifice plate installed in front of the control valve? - HCBBS Forum
28. What are the basic procedures for starting up and shutting down the pre-hydrogenation system (using reformer hydrogen)? - HCBBS Forum
29. Temperature - HCBBS Forum
30. Are there vortex pumps suitable for low flow rates? How is it working on-site? Which are the better manufacturers for producing vortex pumps? - HCBBS Forum
31. Are you serious about your child’s education? - HCBBS Forum
32. “It’s not the elderly who can’t be helped - HCBBS Forum
33. Looking for books on hydrocracking - HCBBS Forum
34. May I ask whether a magnetic flap level gauge can be used for the side level gauge of a tank containing viscous fluids? - HCBBS Forum
35. What are the reasons that shorten the lifespan of pre-hydrogenation catalysts? How can the service life of pre-hydrogenation catalysts be extended? - HCBBS Forum
36. The ratio of rigid hangers to spring hangers in pipelines - HCBBS Forum
37. What are the characteristics of the three types of containers? - HCBBS Forum
38. Sharing on boiler industry salary levels - HCBBS Forum
39. Problems with the gear pump circulation system - HCBBS Forum
40. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 334 - HCBBS Forum
41. Reform of the refined oil pricing mechanism - HCBBS Forum
42. Looking for manufacturers of customizable Y-type tees - HCBBS Forum
43. A very basic question: How to simulate the physical properties of water vapor? - HCBBS Forum
44. Sign-in record post from October 22, 2015 - HCBBS Forum
45. 【Daily Question】Question from Issue 20151021 - HCBBS Forum
46. Control of ammonia nitrogen parameters in low-temperature condensed liquid through transformation and aeration - HCBBS Forum
47. Is it necessary for those studying chemical engineering to take the certified fire protection exam? - HCBBS Forum
48. Recruitment for petrochemical engineers - HCBBS Forum
49. A major earthquake in the construction market! The Ministry of Housing and Urban-Rural Development is implementing new regulations starting today! - HCBBS Forum
50. Types and materials of liquid chlorine pipeline isolation valves – Everyone is welcome to vote - HCBBS Forum
51. What is the thickness of the outer circular hole spacing for 64-kilogram flanges? - HCBBS Forum
52. The light gasoline etherification unit can increase the conversion rate of olefins through etherification - HCBBS Forum
53. 【Daily Question】Question from Issue 20151022 - HCBBS Forum
54. The design institute for the alcohol-ether plant in Jiangsu - HCBBS Forum
55. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 335 - HCBBS Forum
56. Time for water in a full DN300 pipe to freeze at -10 degrees Celsius - HCBBS Forum
57. The relationship between bellows and valves - HCBBS Forum
58. What is the effect of the pressure in the pre-distillation tower on the distillation process? - HCBBS Forum
59. What are the necessary conditions for bubble coking in delayed coking? - HCBBS Forum
60. 【Daily Question】Question for Issue 20151026 - HCBBS Forum
61. What are wetting fillers and wetting devices? What is his role? - HCBBS Forum
62. At what temperature should a pressure vessel be equipped with insulation? - HCBBS Forum
63. The reactor has its feed cut off; how should the distillation system handle this? - HCBBS Forum
64. 【Daily Question】10.21 True or False: The concept of green oil - HCBBS Forum
65. Can a company that is upgrading or expanding a new project, located near its existing facility, obtain a safety production license on its own as a branch office? - HCBBS Forum
66. Regarding the National VI standards and the composition of new formula gasoline, which devices will become popular? - HCBBS Forum
67. Fenton reactor fabrication - HCBBS Forum
68. Problems with fixed-bed hydrodesulfurization of residue oil. - HCBBS Forum
69. Uses of valeraldehyde - HCBBS Forum
70. Looking to purchase urea without formaldehyde? It’s best to choose manufacturers from the southwest region; urea dust will also work - HCBBS Forum
71. 【Daily Question】10.26 True or False: Apart from being switched off according to established procedures, all alarm interlocks must remain active at all times - HCBBS Forum
72. What precautions should be taken when using liquid chlorine? - HCBBS Forum
73. Distribution of the hazardous chemical industry in 13 cities in Jiangsu - HCBBS Forum
74. Regarding the issues with flocculation sedimentation tanks - HCBBS Forum
75. 【Daily Question】Question from Issue 20151020 - HCBBS Forum
76. Can prefabricated concrete tanks store crude oil? - HCBBS Forum
77. What is a water distribution system? What are the water distribution methods? - HCBBS Forum
78. FAQs on Safety Valves - HCBBS Forum
79. The temperature of the stripping tower cannot be increased - HCBBS Forum
80. How is the total weight of a distillation tower calculated? - HCBBS Forum
81. What are the reasons for an increase in the inlet pressure of the synthesis tower? - HCBBS Forum
82. Will the mechanical seal cooling water (softened water) enter the medium inside the pump? - HCBBS Forum
83. Question 71 on Boiler Foundations, October 24: (A certain score will be given to the top 40) - HCBBS Forum
84. 【Ethylene Question Bank】What are the tasks of each section in ethylene separation? - HCBBS Forum
85. Please discuss the methods for handling solid catalyst waste - HCBBS Forum
86. “Breakthrough achieved in the treatment process of coal chemical industry wastewater using \"ED ion-exchange membrane concentration + crystallization for salt separation\" - HCBBS Forum
87. I would like to ask how the filling level of liquid in a vehicle tanker is controlled? - HCBBS Forum
88. Which desulfurization method is commonly used in large-scale coal chemical industries nowadays? - HCBBS Forum
89. What are the causes of cracks in the shell of tower equipment? - HCBBS Forum
90. Which model is good for a 3M canister when in contact with mercaptoethanol? - HCBBS Forum
91. 【Daily Question No. 8】October 21, 2015: +2 wealth for participation, +3 additional wealth for correct answers - HCBBS Forum
92. Registered firefighters have arrived; is registration for chemical safety professionals far off? - HCBBS Forum
93. Common problems in weighing and packaging lines - HCBBS Forum
94. How to Handle Colleague Relationships Properly: When Workplace Friendship Fades - HCBBS Forum
95. Issues related to the recycling of cooling water in centrifugal pumps - HCBBS Forum
96. Is the treatment plan for potato starch wastewater feasible? - HCBBS Forum
97. I need a schematic diagram and a structural diagram of a bubble dryer. - HCBBS Forum
98. Under what circumstances is it necessary to have redundant input (output) cards for DCS and SIS? - HCBBS Forum
99. Catalytic energy-saving measures - HCBBS Forum
100. Questions from Issue 20151023 - HCBBS Forum