English — Forum #723 (Page 487/642)

1. 2015 Chemical Engineering Examination - HCBBS Forum
2. In a delayed coking unit, the coking filtration water contains coke dust – what is its density? - HCBBS Forum
3. Melting point of methanol - HCBBS Forum
4. How long can the battery in your device last - HCBBS Forum
5. What are the reasons for a decrease in the inlet pressure of the synthesis tower? - HCBBS Forum
6. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 339 - HCBBS Forum
7. Regarding the registration for the use of pressure vessels - HCBBS Forum
8. Is it possible to use the residual pressure from the reverse osmosis concentrate stream to directly discharge the concentrate into other devices for further treatment? - HCBBS Forum
9. What are remote output and built-in display mode? How to set it up? - HCBBS Forum
10. Problems with the S7 300. . . - HCBBS Forum
11. Regarding the equipotential bonding terminal box for bathroom renovation - HCBBS Forum
12. Questions regarding ultrasonic testing of the circumferential butt welds of φ325*7 steel pipes - HCBBS Forum
13. What is the function of a single-tube heat exchanger? - HCBBS Forum
14. Is it considered qualified to fill an 80-square-meter reactor with nitrogen for leak testing? - HCBBS Forum
15. Inspection and replacement of heat exchangers - HCBBS Forum
16. Weekly Topic Summary for the Fertilizer Sector (continuously being updated) - HCBBS Forum
17. 【Catalytic Reforming Mix】Vote now for the Best Member of October to win cash rewards - HCBBS Forum
18. Methods to convert CAD to PDF - HCBBS Forum
19. Cable selection - HCBBS Forum
20. Distillation column operation - HCBBS Forum
21. 【Daily Question】Question from Issue 20151026 - HCBBS Forum
22. 【Daily Question】Question from the 20151021 issue - HCBBS Forum
23. Equipment lubrication - HCBBS Forum
24. Seeking help with the selection of gas absorption model methods and the fitting of binary interaction parameters - HCBBS Forum
25. Meteorology, liquid chromatography operations - HCBBS Forum
26. What causes localized deformation of the shell of tower equipment? - HCBBS Forum
27. VP MODBUS communication deviation - HCBBS Forum
28. Graphite heat exchanger - HCBBS Forum
29. 12Cr1MoV and stainless steel (304) - HCBBS Forum
30. Briefly describe the principle of a turbine flowmeter? - HCBBS Forum
31. On the pressure resistance issue of dissimilar welding between stainless steel and carbon steel - HCBBS Forum
32. As a newcomer to security management, what areas should I learn? - HCBBS Forum
33. \"Specifications for the Detection of Volatile Organic Compound Leaks in Petrochemical Plants\" Q/SH0546-2012, please help - HCBBS Forum
34. **Notice from the National Development and Reform Commission on Raising Domestic Finished Oil Prices - HCBBS Forum
35. Regarding high scores in hot conditions, high scores in cold conditions, - HCBBS Forum
36. How to recover a forum login password? - HCBBS Forum
37. Why can’t the liquid-liquid separation of water, o-chlorotoluene, and o-chlorobenzonitrile be simulated in ASPEN? - HCBBS Forum
38. The thrust clearance of the hot oil pump is small - HCBBS Forum
39. Sign-in record post from October 24, 2015 - HCBBS Forum
40. How is the Youwen DCS? - HCBBS Forum
41. Selection of flue gas valves behind the boiler - HCBBS Forum
42. High-low selection problem - HCBBS Forum
43. Want to learn *Aspen a bit - HCBBS Forum
44. One post per day - HCBBS Forum
45. 【Daily Question】Question from Issue 20151017 - HCBBS Forum
46. Daily Question 2015.10.21 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (multiple-choice question) - HCBBS Forum
47. Previously, PAM was added to electroplating wastewater to facilitate sludge precipitation; now, ferric chloride is added first, followed by PAM, and then the sludge settles and floats to the surface. Why is that? - HCBBS Forum
48. For centrifugal pumps suffering from cavitation, when a frequency converter is installed to reduce the speed, on what basis do the flow rate and head decrease? - HCBBS Forum
49. Practical exam for chemical plant control operators? - HCBBS Forum
50. What does H2 refer to in dⅡct4, which only contains H2? - HCBBS Forum
51. Reasons for the low suction pressure and low suction temperature in ammonia refrigerators - HCBBS Forum
52. Seeking advice on the tolerance settings for tearing flow strands in Aspen - HCBBS Forum
53. Which three equilibria are controlled by the distillation column? - HCBBS Forum
54. 【Daily Question】Question for Issue 20151024 - HCBBS Forum
55. What brand of valves are CASH ACME? - HCBBS Forum
56. Can low-temperature tank trucks be used to fill with liquid argon as storage tanks? - HCBBS Forum
57. Domestic manufacturers of phenanthone? - HCBBS Forum
58. What are the symptoms of hydrogen sulfide poisoning in UASB? What is the tolerance level? - HCBBS Forum
59. Issues with the installation of spherical tank tie rods - HCBBS Forum
60. What are the types of safety investment? - HCBBS Forum
61. 【Petrochemical Deep Processing Segment】Vote now for the Best Member of October! - HCBBS Forum
62. What are some good places to take the elderly for a relaxing outing? - HCBBS Forum
63. I’ve just started learning *Aspen recently, and I encountered a problem example; I hope experts can guide me on how to approach it. - HCBBS Forum
64. Chemical pipeline design for water treatment - HCBBS Forum
65. Where are blowers for heat transfer oil gas stoves generally used? - HCBBS Forum
66. Possible reasons for the high aromatic content in the raffinate oil and corresponding solutions - HCBBS Forum
67. Use a yield reactor to calculate the exit temperature - HCBBS Forum
68. Guidelines for the Standardized Management of Industrial Hazardous Waste Generating Units--5 - HCBBS Forum
69. 【Daily Question】Question from Issue 20151026 - HCBBS Forum
70. What are the principles of hazard control? - HCBBS Forum
71. Is the converter in a hydrogen production plant considered a special type of equipment? - HCBBS Forum
72. Crude oil forecast for this week (20151019) - HCBBS Forum
73. Is the high-pressure gas vent pressure relief valve suitable? - HCBBS Forum
74. If everything is completely unrestricted, how many children would you have? - HCBBS Forum
75. 【Daily Question】Question from the 20151021 issue - HCBBS Forum
76. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 337 - HCBBS Forum
77. Survey on the current actual implementation of environmental protection efforts in enterprises? - HCBBS Forum
78. As the pressure at the top of the stabilizer increases, how does the temperature at the top change? - HCBBS Forum
79. 10 common dietary characteristics of long-lived people - HCBBS Forum
80. What is a good decolorizing agent for treating pesticide wastewater? - HCBBS Forum
81. Case analysis: What’s your opinion on the incident where a man who spat on Shanghai Metro passengers was beaten? - HCBBS Forum
82. Occupational health monitoring data from natural gas-based hydrogen production facilities - HCBBS Forum
83. What is the potential aromatic content of the reformed feedstock? - HCBBS Forum
84. How to repair shell cracks in tower-type equipment? - HCBBS Forum
85. Let’s work on questions 69-70, the multiple-choice questions on laws and regulations from the 2015 First-Class Constructor Examination, question 14, part 2015 - HCBBS Forum
86. Explain the working principle of filtered water? - HCBBS Forum
87. Issues related to welding operations powered by generators - HCBBS Forum
88. What are the energy-saving and emission-reduction measures for gasoline hydrogenation units, naphtha aromatization units, aromatic hydrocarbon plants, diesel hydrogenation units, and dry gas hydrogen production units? - HCBBS Forum
89. Waste heat boilers and heat transfer oil boilers - HCBBS Forum
90. Metal pretreatment process - sandblasting - HCBBS Forum
91. What are the requirements for the quality of samples taken for hot work analysis? - HCBBS Forum
92. Operation of the distillation tower - HCBBS Forum
93. 【Daily Question】Question from Issue 20151023 - HCBBS Forum
94. What is the purpose of oil interconnection during the first startup of the reforming unit? - HCBBS Forum
95. Does the thickness of polyethylene-propylene composite membranes include the non-woven fabric? - HCBBS Forum
96. Material selection for coke oven gas heaters - HCBBS Forum
97. English translation of turbine booster - HCBBS Forum
98. Mother liquor water pH value - HCBBS Forum
99. Joint Learning*1019: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
100. What are the requirements for the venting pipes of liquid pipelines containing toxic substances? - HCBBS Forum