English — Forum #723 (Page 611/642)

1. Regarding the replacement of Hastelloy B3 tubular heat exchangers? - HCBBS Forum
2. Surge mechanism of axial flow fans - HCBBS Forum
3. What does the integration time mean in Aspen Dynamic? - HCBBS Forum
4. June 2015 – PPT Version: Overprint Management Subsidy - HCBBS Forum
5. Activity in the compound fertilizer segment - HCBBS Forum
6. Recovery of low-flow, high-concentration hydrogen sulfide - HCBBS Forum
7. Technical specifications and parameters of emergency power supply - HCBBS Forum
8. Can ammonia pipelines use electric heat tracing? Are there any regulatory requirements in this regard? - HCBBS Forum
9. 1. Coal-fired boilers can increase load quickly; can circulating fluidized bed boilers do the same? - HCBBS Forum
10. What are the biggest disadvantages of cylindrical storage tanks and spherical storage tanks? How to avoid it? - HCBBS Forum
11. After the equipment is overhauled, does the heat exchanger in the circulating water system need to have its oxide film treatment done again? - HCBBS Forum
12. Opening ratio of sieve trays in the vacuum distillation tower - HCBBS Forum
13. Find FEP. PTFE Operating Procedures - HCBBS Forum
14. Methods for extinguishing a fire caused by magnesium powder - HCBBS Forum
15. Some questions regarding the storage of butyl acrylate; seeking advice from experts~ - HCBBS Forum
16. 【Weekly Topic】-007-How to Improve the Coagulation Effect in Physical and Chemical Processes - HCBBS Forum
17. Why is it called hydraulic calculation - HCBBS Forum
18. The heating and boiling process of a liquid mixture - HCBBS Forum
19. Water used for 10T steam boilers - HCBBS Forum
20. Haichuan Spirit - HCBBS Forum
21. Hello everyone, a newcomer seeking help - HCBBS Forum
22. The entire post about interest rate cuts was also deleted by me - HCBBS Forum
23. A physical chemistry problem; let’s discuss it together - HCBBS Forum
24. Food Topic 20 – Today is the Start of Heat; what are the dietary customs in different regions? ? Let’s talk about it! - HCBBS Forum
25. How to select the control valves for regulating the pressure of natural gas entering the atmospheric-pressure furnace and the temperature of crude oil? - HCBBS Forum
26. Can industrial softened water and deoxygenated water be used for bathing? - HCBBS Forum
27. Some questions regarding oil loading jacks - HCBBS Forum
28. How should the amount of non-condensable gas in MVR evaporation be determined? - HCBBS Forum
29. I would like to ask what the difference is between the fork switch and the overflow switch in the loading system - HCBBS Forum
30. Summer vacation has arrived, and I want to use this time to study English seriously. The few resources that my senior shared with me are really good - HCBBS Forum
31. Is it still necessary to wrap PTFE tape when installing gasketing? - HCBBS Forum
32. Time relay controls the pneumatic control valve - HCBBS Forum
33. On data acquisition networking for Siemens systems - HCBBS Forum
34. Some high-pressure heat exchangers have bases in the form of guide rails – what are the advantages of that? - HCBBS Forum
35. Aspen7.2 gives incorrect results when running files generated by others - HCBBS Forum
36. Wet oxidation, catalytic wet oxidation - HCBBS Forum
37. The Roots vacuum pump has collided with its cylinder; seeking help - HCBBS Forum
38. Emerson Consulting: Urgently seeking Sales Manager and Sales Engineer - HCBBS Forum
39. I’ve been confused lately; the new manager doesn’t like me... - HCBBS Forum
40. Issues regarding the vibration of the boiler feed water pump - HCBBS Forum
41. What is the difference between inverters and thyristor modules? - HCBBS Forum
42. The issue of excessive oily components in water-based polyurethane emulsions - HCBBS Forum
43. How to calculate the stroke of a pneumatic globe valve? What is the unit? - HCBBS Forum
44. inside - HCBBS Forum
45. Does hydrogen fluoride gas corrode stainless steel? - HCBBS Forum
46. Cooling water temperature - HCBBS Forum
47. Is it accurate to measure wall thickness using ultrasound when there is a medium inside the pipeline? - HCBBS Forum
48. 【Weekly Topic】(34) July 4, 2015: What is hardness? Into how many categories? - HCBBS Forum
49. The impact of reaction depth on the product - HCBBS Forum
50. Environmental protection facilities in accident conditions - HCBBS Forum
51. Severe smoking from the coal furnace door due to high-pressure ammonia water - HCBBS Forum
52. May 2015 Outstanding Original Technology Theme Selection Contest (Advanced Selection Stage for the Technology Category) - HCBBS Forum
53. Is electroadsorption water treatment technology reliable? - HCBBS Forum
54. Screw compressor balance line pressure? ? ? - HCBBS Forum
55. In what situations can separation be achieved without distillation? - HCBBS Forum
56. Effect of oxygen-coal ratio on Texaco gasifier - HCBBS Forum
57. Request for the Comprehensive Report on On-site Investigations of Losses in Oil Refining Processes - HCBBS Forum
58. Instructions for Configuration and Commissioning of E+H Electromagnetic Flowmeters and Mass Flowmeters - HCBBS Forum
59. Seeking a design firm for formaldehyde production processes - HCBBS Forum
60. Usage method of the purge flow meter - HCBBS Forum
61. 【Daily Question】June 26: When was China’s first set of catalytic cracking units put into use? - HCBBS Forum
62. PVC market trends on July 1 - HCBBS Forum
63. What is a valve with an actuating mechanism called? - HCBBS Forum
64. Are there any explosion-proof personal radiation dose alarms and monitoring devices available at home and abroad? - HCBBS Forum
65. 【Daily Question】July 7: When the catalytic unit is operating normally, what should be the correct opening degrees of the primary and secondary air valves in the auxiliary combustion chamber? - HCBBS Forum
66. Prohibited content; do not violate the rules - HCBBS Forum
67. What measures can be taken in actual operation to reduce the combustible content in the fly ash of circulating fluidized bed boilers? - HCBBS Forum
68. Gasoline hydrogenation diene addition - HCBBS Forum
69. Who wants to take a look and see what kind of valve this motorized valve is? - HCBBS Forum
70. Are there any specifications for the installation of emergency equipment and facilities in refined oil storage facilities? - HCBBS Forum
71. Air-cooled compressor to water-cooled - HCBBS Forum
72. How to transmit the pump operation signal from the electrical system to the instruments - HCBBS Forum
73. Operation Procedures for Adding Cetane Number Improvers - HCBBS Forum
74. Induction fan speed Converter negative pressure - HCBBS Forum
75. Transformer drying treatment methods - HCBBS Forum
76. I still love you. But I choose to leave - HCBBS Forum
77. Could you recommend some domestic flow meter manufacturers that offer good value for money? - HCBBS Forum
78. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 106 - HCBBS Forum
79. Can the Rockets sign a strong center to form a twin-tower lineup with World of Warcraft? - HCBBS Forum
80. 【Daily Question】June 29 – Impeller of centrifugal pump (First 80 participants + 2 extra points for each correct answer; 3–8 wealth points additionally) - HCBBS Forum
81. Equipment material selection - HCBBS Forum
82. Can Class C liquids be stirred using compressed air? - HCBBS Forum
83. What is the steam density at each grade? - HCBBS Forum
84. 【Daily Question】July 1st What is a device merging tee valve usually used to regulate? - HCBBS Forum
85. Gasification, low oxygen purity - HCBBS Forum
86. The coal-to-hydrogen plant at Jiujiang Petrochemical has achieved handover - HCBBS Forum
87. Chemical industry qualification exam - HCBBS Forum
88. There is a special instrument that I want to replicate; are there companies specialized in this? - HCBBS Forum
89. Gas detectors: What is the market situation and future prospects? - HCBBS Forum
90. Methods for fixing oil leakage in reducers - HCBBS Forum
91. Urgently need a schematic diagram of the internal structure of the air-cooled tower - HCBBS Forum
92. Does anyone have any lecture videos or materials on catalysis that they could share? - HCBBS Forum
93. Is a horizontal silencer suitable for use in steam venting systems to meet regulatory requirements? - HCBBS Forum
94. Let’s discuss the issues in low-temperature methanol washing operations - HCBBS Forum
95. When the machine is started up under hot conditions, can the shell-and-tube heat exchanger be used for cooling at the same time? - HCBBS Forum
96. 【Daily Question】2015.06.27 Non-destructive testing (2 wealth points for replying, plus 3–8 additional wealth points for a correct answer) - HCBBS Forum
97. What is the typical level of combustible content in the fly ash of circulating fluidized bed boilers? - HCBBS Forum
98. How to determine the flatness of a composite tube sheet - HCBBS Forum
99. The level of the double-flange level gauge is always at 100% - HCBBS Forum
100. Why does a high temperature of the lubricating oil in the compressor’s oil circuit lead to low oil pressure? - HCBBS Forum