English — Forum #723 (Page 528/642)

1. Notation for different materials of gaskets - HCBBS Forum
2. Change of specialty for intermediate engineer - HCBBS Forum
3. 【Basic Theory】At what pH or above does hydrogen peroxide exhibit reducibility? - HCBBS Forum
4. I want to go back to Shandong to work - HCBBS Forum
5. Distillation tower feed line diameter - HCBBS Forum
6. 【Daily Question】Question from Issue 20150921 - HCBBS Forum
7. What should be done regarding the exhaust gas from the salt and acid storage tanks? - HCBBS Forum
8. Difficulties in phosphorus removal in wastewater treatment - HCBBS Forum
9. Seek literature - HCBBS Forum
10. Chemical Engineering in Daily Life – Question 70: How to prevent colds? - HCBBS Forum
11. I don’t understand, please help - HCBBS Forum
12. 【Daily Question】Issue 20150916 Test - HCBBS Forum
13. Discussion on the selection of crystallization amplification - HCBBS Forum
14. What should be considered when replacing the drum of a crane? - HCBBS Forum
15. Debate on pouring used lubricating oil on valve screws. - HCBBS Forum
16. Introduce the five operational advantages of truck cranes - HCBBS Forum
17. How to reduce the sulfur content in petroleum coke - HCBBS Forum
18. Is dichloroethane generated during the PVC production process? - HCBBS Forum
19. Jilin Hongtai New Energy’s 150,000 tons per year coal tar hydrogenation plant is expected to come online by the end of the year - HCBBS Forum
20. Help: Simulation of a methanol recovery tower - HCBBS Forum
21. Material selection for buried water supply pipes - HCBBS Forum
22. Boiler water issues - HCBBS Forum
23. Mass flow meter - HCBBS Forum
24. Can pipeline alignment be done by heating? - HCBBS Forum
25. The 95 porcelain columns in the electrostatic precipitator often break – what is the reason? What solutions are there then? Thank you - HCBBS Forum
26. Haichuan Freelancer’s large-scale “public welfare” event shines brilliantly! 【Security Management Divider>> Please upgrade after management is complete】 - HCBBS Forum
27. Fluid flow velocity in the inlet and outlet pipes of the compressor - HCBBS Forum
28. Granulators, emulsifiers, mixing tanks, roll presses, crushers, feeders, and chemical pumps and valves - HCBBS Forum
29. Calculation of air compressor air volume - HCBBS Forum
30. Could any expert share some learning materials on Aspen FlareNet? - HCBBS Forum
31. I want to take the exam to become a registered chemical engineer; I’m looking for information and guidance - HCBBS Forum
32. Should the crew’s accumulator be repressurized while the oil is in circulation, or after the machine has stopped and all oil has been returned? - HCBBS Forum
33. Mid-Autumn Festival benefits are here! - HCBBS Forum
34. Seeking help with tank issues - HCBBS Forum
35. Fan speed - HCBBS Forum
36. As the children and parents are getting older, seeking job opportunities in the field of chemical instrumentation and automation in Tai’an and Jining areas of Shandong Province - HCBBS Forum
37. The vibration amplitude of the heat exchanger is high; how to address this? - HCBBS Forum
38. Seeking advice on heat transfer issues in heat exchangers - HCBBS Forum
39. During the operation of the gasifier, a CO concentration of 100 ppm was detected in the burner cooling water separation tank - HCBBS Forum
40. Origin of the 2B requirement for the surface of stainless steel materials - HCBBS Forum
41. New student registration, my thoughts. - HCBBS Forum
42. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for those who participate； Question 179 - HCBBS Forum
43. What is the concept of a “three-digit narrow band” in digital display regulators? - HCBBS Forum
44. Is signing in possible only by leaving a message? L - HCBBS Forum
45. Methanol: Weekly topic – Reasons for the deactivation of methanol shift catalysts and specific symptoms - HCBBS Forum
46. Potassium dihydrogen phosphate---viscosity - HCBBS Forum
47. Question: How can plate heat exchangers address the crystallization issue? - HCBBS Forum
48. How to choose flanges and bolts - HCBBS Forum
49. Compressor fault analysis and diagnosis - HCBBS Forum
50. Learn Together*: +2 wealth for participation, +5 wealth for correct answers - HCBBS Forum
51. For austenitic stainless steel pipes, the hardness measured after heat treatment is 187 – where does this value come from? - HCBBS Forum
52. Selection of exhaust gas absorption tower - HCBBS Forum
53. How to calculate the pressure when a chlorine water seal is broken - HCBBS Forum
54. Division of responsibilities for work related to work safety among member agencies of the State Council’s Work Safety Commission - HCBBS Forum
55. Oil-free lubrication modification for CO2 compressors - HCBBS Forum
56. Dust explosion prevention issues for carbon black - HCBBS Forum
57. Does water in the seal oil have the same impact on different heavy oil pumps? - HCBBS Forum
58. schneider citect 2015 - HCBBS Forum
59. How to deal with malfunctions in bridge cranes - HCBBS Forum
60. How to address the high noise from the speed increase gearbox of the reaction feed pump? - HCBBS Forum
61. Why doesn’t the United States pursue large-scale **? - HCBBS Forum
62. What exactly is the air supply requirement for a positive-pressure explosion-proof box? - HCBBS Forum
63. Can high-speed pumps only use non-integrated seals? - HCBBS Forum
64. What is the difference between grapes and raisins? - HCBBS Forum
65. Bleaching with colored urea solution - HCBBS Forum
66. Coking process in the coke tower of a coking unit - HCBBS Forum
67. Effect of air cooler design temperature on heat exchange area - HCBBS Forum
68. Is there a significant difference between the freezing point and melting point, as well as the bubble point and dew point, of a pure substance? - HCBBS Forum
69. Are there any regulations regarding the residence time of pressure vessels? Please ask an expert to explain it - HCBBS Forum
70. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 172 - HCBBS Forum
71. What are the main environmental problems facing the world today? - HCBBS Forum
72. Chemical Engineering in Daily Life – Question 69: How to fill a glass of beer smoothly? - HCBBS Forum
73. How do you handle the situation of buried drills during coking unit decoking? ? ? ? ? - HCBBS Forum
74. One Question per Day, September 12, 2015 - HCBBS Forum
75. Seeking advice on calculating the power consumption of sulfuric acid pumps - HCBBS Forum
76. Rewards from China’s most powerful festival - HCBBS Forum
77. Daily Question: September 4, 2015 - HCBBS Forum
78. Issues related to simulating reactors for methanol utilization kinetics - HCBBS Forum
79. Questions for Issue 20150910 - HCBBS Forum
80. 【Daily Question】Question from Issue 20150907 - HCBBS Forum
81. Official information on registered examinations for survey and design fields - HCBBS Forum
82. Solving problems related to the MTL5575 type safety barrier - HCBBS Forum
83. Should one buy a *machine for the child to learn with? - HCBBS Forum
84. Utilization of the heat generated by ion membrane electrolysis of wet chlorine gas - HCBBS Forum
85. Mass flow meter brands - HCBBS Forum
86. Why is the minimum thickness that can be detected by diffraction time difference ultrasonic testing 12 mm? - HCBBS Forum
87. Calculation of pipe weld equivalent - HCBBS Forum
88. 【Daily Question No. 4】September 03, 2015: +2 wealth for participation, +3 additional wealth for a correct answer - HCBBS Forum
89. Which manufacturer is better for total organic carbon analyzers? - HCBBS Forum
90. In the urea production process using carbon dioxide stripping, how can the temperature differences at various points on the walls of the synthesis tower be better controlled? - HCBBS Forum
91. Methods for removing calcium using mirabilite - HCBBS Forum
92. Selection of pressure gauge, with aniline as the medium to be measured - HCBBS Forum
93. FF instrument cannot communicate - HCBBS Forum
94. One question per day to learn about occupational health - HCBBS Forum
95. Regarding vacuum tubes - HCBBS Forum
96. Seek help: Design criteria for the limestone powder silo in desulfurization projects and design of equipment supports - HCBBS Forum
97. What are your plans for the three-day long holiday at the convenience store of HaiChuan Irrigation Co., Ltd.? - HCBBS Forum
98. Why can’t a water seal be used for safety isolation in confined space operations? - HCBBS Forum
99. Advantages and disadvantages of vertical heat exchangers and horizontal heat exchangers - HCBBS Forum
100. Can a stop valve be connected directly to a Y-filter? - HCBBS Forum