English — Forum #723 (Page 453/642)

1. Inspection of heat exchanger tubes - HCBBS Forum
2. Which standard specifies that storage tanks should have nameplates and numbers? - HCBBS Forum
3. ★Specialized Examination for Chemical Engineering ★ — One question per day (2015-11-23) — Points are awarded for participation - HCBBS Forum
4. Reasons for the high shaft power of screw compressors - HCBBS Forum
5. Why is an elliptical manhole with dimensions of 300x400 installed at the head of the low-pressure steam drum, instead of a circular manhole? - HCBBS Forum
6. In the end, we still missed it - HCBBS Forum
7. Evergrande wins the AFC Champions League - HCBBS Forum
8. What type of connection should be used for pipes and valves carrying flammable, explosive, toxic, or harmful liquids? - HCBBS Forum
9. That youth of bygone times - HCBBS Forum
10. What to do if dirt always gets stuck to the float in a float flow meter? - HCBBS Forum
11. Regarding the issue where the INTOUCH alarm time becomes January 1, 1970 - HCBBS Forum
12. 【Daily Question】Question from the 20151119 issue - HCBBS Forum
13. 【Daily Question】November 24, 2015: Participation +2 Wealth； +3 to 8 wealth for correct answers - HCBBS Forum
14. Environmental Protection Daily Quiz 11.16: Participate for prizes; 3 correct answers and another 3 prizes will be given - HCBBS Forum
15. What is the reason for the high COS content in the carbon dioxide product gas produced by low-temperature methanol washing? - HCBBS Forum
16. What should be considered regarding the piping connections and material selection for liquid oxygen systems? - HCBBS Forum
17. Why are the heat exchange tubes in fixed-tube-sheet heat exchangers of fixed length? - HCBBS Forum
18. 【Active Participation for Joint Improvement 11.19-25】+2 for participation, +3~10 for correct answers - HCBBS Forum
19. How to obtain the volume percentage of a stream in HYSYS? - HCBBS Forum
20. Joint Learning*1118: +2 wealth for participation, +9 wealth for correct answers - HCBBS Forum
21. What are the common insulation materials used for pipes? How to choose the thickness? - HCBBS Forum
22. 【Daily Question】Question 45: Test question from issue 20151119 (Reply +2)； For the other +3) - HCBBS Forum
23. What is the absorption of productive poisons? - HCBBS Forum
24. The bulk commodities market is sluggish, and industrial gases are on a downward trend – what lies ahead? - HCBBS Forum
25. What are the technical trends in the development of cooling towers? - HCBBS Forum
26. Environmental Protection Daily Quiz 11.8: Participate for prizes; 3 correct answers earn an additional 3 prizes - HCBBS Forum
27. Under what circumstances is it necessary to install a condenser on a differential pressure flow meter? - HCBBS Forum
28. What is the function and principle of the subcooler in an LNG cryogenic tank? - HCBBS Forum
29. Issues regarding tower pressure and temperature control in distillation columns - HCBBS Forum
30. Is there anything for treating CO in exhaust gases? - HCBBS Forum
31. 【Daily Question】Chemical Engineering Principles 234: Packed Absorber Tower (November 15) - HCBBS Forum
32. Function of the balance line in the compressor balance chamber - HCBBS Forum
33. Should I stay? - HCBBS Forum
34. 【Popular Science on Polymers and Materials】--011 Ironing Clothes + zdl1966 - HCBBS Forum
35. 【Weekly Question from November 9-15】Multiple-choice Questions - HCBBS Forum
36. 【Daily Question】Question from Issue 20151106 - HCBBS Forum
37. The principle of catalytic reactions? - HCBBS Forum
38. 【Popular Science on Polymers and Materials】--030 Talking about the polymer materials in our clothing +ljtjbx - HCBBS Forum
39. I’ve been thinking about creating a display section for defective products recently - HCBBS Forum
40. Personnel requirements for design institutes to upgrade to Class A qualification in the chemical, petrochemical, and pharmaceutical industries - HCBBS Forum
41. Problems in the shaping of pressure-bearing components in low-temperature pressure vessels - HCBBS Forum
42. 【Daily Question】November 9, 2015: Boiler true/false questions (3 wealth points for a reply; +3 to 8 additional wealth points for a correct answer) - HCBBS Forum
43. What alcohol-related plants has Chengda Engineering Company built? - HCBBS Forum
44. I would like to inquire about the usage of the multi-functional water pump control valve JD745X-10 - HCBBS Forum
45. Is there any experienced worker who knows the installation sequence for electric valves and manual valves? - HCBBS Forum
46. Motor and thermal protection issues - HCBBS Forum
47. Utilization of flue gas heat from 1 million tons of delayed coking heaters - HCBBS Forum
48. The wedge-shaped flow meter on the gasifier grate shows obvious signs of cavitation; please analyze the cause - HCBBS Forum
49. Under what circumstances is an isolator needed for a differential pressure flow meter? - HCBBS Forum
50. 18 years of experience in the chemical industry, capable of solving problems. Job hunting. - HCBBS Forum
51. One question per day (1111) - HCBBS Forum
52. Equipment shaking - HCBBS Forum
53. Is there a large discrepancy between the readings from an online COD monitor and those obtained using the potassium permanganate method? - HCBBS Forum
54. Okay, okay - HCBBS Forum
55. Use a complexing agent for polysilicon other than B - HCBBS Forum
56. Is a thermal insulation ring needed for horizontal containers? - HCBBS Forum
57. Principles of Chemical Engineering in Daily Life – Ice Flower Glass in Rural Winters - HCBBS Forum
58. Sunlight affects the octane rating of gasoline - HCBBS Forum
59. 【Daily Question】Question from Issue 20151106 - HCBBS Forum
60. Regarding the automatic weighing and cutting system for liquid chlorine cylinder packaging, as well as the plant ventilation system - HCBBS Forum
61. I have a question: Can Aspen Plus 7.3 open HYSYS simulation files? The suffix is hsc - HCBBS Forum
62. 【Daily Question】Question from Issue 20151112 - HCBBS Forum
63. 【Daily Question】 November 19th: What should be done to the gas before lighting the heating furnace? ? ? ? Analysis - HCBBS Forum
64. 【Popular Science Tips on Polymers and Materials】--029 Popular science tips on the commonly mentioned \"plasticizers\" and \"softeners\" + ljtjbx - HCBBS Forum
65. What is the heat source in the regenerator during catalytic cracking? - HCBBS Forum
66. The surface of the sight glass in the salt acid synthesis furnace is dirty, preventing proper observation of the flame; seek a solution. - HCBBS Forum
67. What is moist air? How do wet cooling towers cool circulating water? - HCBBS Forum
68. What is a circulating cooling water refrigeration system? - HCBBS Forum
69. 【Boiler Weekly Question from November 16-23】Multiple-choice Questions - HCBBS Forum
70. What will be displayed on a horn-shaped radar level gauge if the horn is facing upward? - HCBBS Forum
71. What are the process parameters for the circulating compressor position? - HCBBS Forum
72. Standard description of centrifugal pump components - HCBBS Forum
73. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 216 - HCBBS Forum
74. How to detect leaks in the internals of a methanol tower? - HCBBS Forum
75. How to install Haichuan Forum on an iPhone - HCBBS Forum
76. Can’t TEMA equipment flanges be used with SA105 if they exceed a certain weight? - HCBBS Forum
77. Selection of explosion-proof lighting for painting operations in new tanks - HCBBS Forum
78. Regarding the issue of crude benzene slag discharge - HCBBS Forum
79. Similarities and differences between magnetic suspension centrifugal fans and air suspension centrifugal fans - HCBBS Forum
80. Effect of salt on the bottom temperature of a distillation column. - HCBBS Forum
81. Where does the air from pneumatic valves escape? - HCBBS Forum
82. What happens if the outlet remains closed after the centrifugal pump starts? - HCBBS Forum
83. Environmental impact assessment fee - HCBBS Forum
84. Treatment of high-concentration saline water - HCBBS Forum
85. Urgent! Ultrasound Flow Meter Manual - HCBBS Forum
86. (Basic knowledge) What are the three types of combustion that occur in the combustion process of circulating fluidized bed boilers? - HCBBS Forum
87. Odor control in circulating water and water treatment technologies in gas production workshops - HCBBS Forum
88. Urgently need test questions and question banks for methanol-to-hydrogen plants - HCBBS Forum
89. High-score process for hydrogenation - HCBBS Forum
90. How to deal with water dripping from the bottom of the furnace during the lining process of a heating furnace? - HCBBS Forum
91. How do you prevent freezing and condensation in winter? - HCBBS Forum
92. Regarding the steam drive and electric drive of air separation turbines - HCBBS Forum
93. Bypass valve from air to dirty nitrogen pipe - HCBBS Forum
94. In industry, what is the typical CO2 content in the lean liquid at the bottom of the MDEA regeneration tower? Urgent. . . - HCBBS Forum
95. What are the hazards of excessively high superheated steam temperature in circulating fluidized bed boilers? - HCBBS Forum
96. 【Daily Question】November 12, 2015 – Boiler True/False Questions (3 wealth points for replying; +3 to 8 additional wealth points for correct answers) - HCBBS Forum
97. Chattering about 3D printing technology – can it be used to print a wife? - HCBBS Forum
98. Come on, let’s discuss what happens when there is a \"temperature spike\" in the residue hydrogenation unit - HCBBS Forum
99. Everyone, take question 67-2: Multiple-choice question 53 from the 2015 First-Class Constructor Examination in \"Project Management\"; there will be a reward for those who answer it correctly - HCBBS Forum
100. Vacuum pump working fluid - HCBBS Forum