English — Forum #723 (Page 591/642)

1. What if I forget to pick up the notice of passing the basic exam? - HCBBS Forum
2. Yi【Water pump filter & two-stage steam extraction temperature reduction and pressure regulator】 - HCBBS Forum
3. NaOH precipitation? ! - HCBBS Forum
4. In the low-pressure urea production system using the carbon dioxide stripping method, the pressure is high, but the concentration of ammonium methylate solution is not high – could it be that the packing in the distillation tower is damaged? - HCBBS Forum
5. What material is suitable for acetylene delivery pipelines? - HCBBS Forum
6. Regarding whether to install wastewater discharge systems in liquefied hydrocarbon storage areas - HCBBS Forum
7. Flame detector photocells and phototubes, photosensitive resistors - HCBBS Forum
8. What heat prevention and cooling measures does your factory take for the auxiliary equipment of boilers? - HCBBS Forum
9. Liquid space velocity - HCBBS Forum
10. How is the condensate water from the vapor seal condenser of a back-pressure centrifugal compressor utilized? - HCBBS Forum
11. Is scaling in the purified water serious? - HCBBS Forum
12. Quantitative loading - HCBBS Forum
13. Steel chimney ladder (zigzag) - HCBBS Forum
14. What to do if heat transfer oil gets mixed into the solvent? - HCBBS Forum
15. Please translate it - HCBBS Forum
16. The load on the endpoints or nozzles in C2 is very high; how to deal with this? - HCBBS Forum
17. Does the standard elliptical head for pressure vessels require a separate drawing? - HCBBS Forum
18. What is the difference between strategists and tacticians? Which type do you think your company needs more of? - HCBBS Forum
19. The media criticizes Shenhua Ningmei for using hundreds of thousands of tons of water from the Yellow River daily without releasing a single drop: Can you believe it? - HCBBS Forum
20. How to classify training materials - HCBBS Forum
21. Online hydrogen sulfide detector for coke oven gas - HCBBS Forum
22. Is the pneumatic control ball valve a single-acting cylinder or a double-acting cylinder? - HCBBS Forum
23. Selection of ASME titanium materials - HCBBS Forum
24. “The Mini-Mart of Haichuan Irrigation Co., Ltd.” – The cicadas’ chirping makes it even hotter - HCBBS Forum
25. Piping support and hanger for venting - HCBBS Forum
26. For internal acid cleaning of containers, what protective equipment do you use? - HCBBS Forum
27. Regarding the allowable start signal for the motor - HCBBS Forum
28. Questions about pressure pipelines? ? ? Regarding the transport of solids - HCBBS Forum
29. Has anyone heard of the Science and Innovation Forum? - HCBBS Forum
30. I want to travel to Tibet; has anyone who’s been there given any advice? - HCBBS Forum
31. Gas pipeline calculation - HCBBS Forum
32. Catalytic cracking reaction – regeneration equipment - HCBBS Forum
33. Relationship Marketing: How to Maintain Old Customers - HCBBS Forum
34. s7300 - HCBBS Forum
35. Leakage requirements for reciprocating cycle hydrogen compressors - HCBBS Forum
36. Who has used PV Elite? Please share your experience. - HCBBS Forum
37. Selection of concentrated sulfuric acid pipelines - HCBBS Forum
38. Methanol calculation - HCBBS Forum
39. Let’s discuss the causes of vibration in air compressor shafts - HCBBS Forum
40. What are the models and specifications of macroporous adsorption resin column devices? - HCBBS Forum
41. Safety valve, forklift inspection. Application for a work safety license - HCBBS Forum
42. Regarding the Aspen refinery - HCBBS Forum
43. Yokogawa GD402 Gas Density Meter Chinese Manual - HCBBS Forum
44. The minimum thickness of the housing after machining, excluding the corrosion allowance - HCBBS Forum
45. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 253 - HCBBS Forum
46. 【Daily Question】July 11: For a catalyst unit with parallel high and low sections, which option represents the resistance in the raw catalyst line? - HCBBS Forum
47. The effluent from the distillation tower contains hydrogen sulfide; since steam stripping is not used, what other methods are available to remove it? Thank you - HCBBS Forum
48. Let’s discuss everyone’s views on installing camera lenses in control rooms. - HCBBS Forum
49. Comparison of the advantages and disadvantages of single-stage double-suction pumps among domestic manufacturers, or market analysis of their competitiveness - HCBBS Forum
50. Surge in centrifugal refrigeration compressors - HCBBS Forum
51. How should waste liquids from coal-to-gas projects be treated? - HCBBS Forum
52. With the PVC industry in such a poor state, how can the calcium carbide process move forward once Texaco’s mercury-free plants begin operating normally? - HCBBS Forum
53. Some operational challenges and common problems in gasoline hydroetherification - HCBBS Forum
54. Questions regarding the reflux temperature at the top of the distillation tower - HCBBS Forum
55. I have some free time, but I work in a hospital; after graduation I won’t work in the chemical industry anymore - HCBBS Forum
56. Is the measurement of coke oven gas based on standard cubic meters or at room temperature? - HCBBS Forum
57. Reasons for the short-term increase in pressure difference in the cyclone separator - HCBBS Forum
58. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 247 - HCBBS Forum
59. HYSYS help - HCBBS Forum
60. The experiment was conducted by mixing gasoline with pure water in a 1:1 ratio; after shaking, the oil and water separated, and the water became opaque. It returned to its normal state after being left alone for half a day - HCBBS Forum
61. Seeking production plans for aviation lubricants and aviation hydraulic fluids - HCBBS Forum
62. Questions about the sealing gas for ice machines? - HCBBS Forum
63. Hydrogen gas leakage issue? - HCBBS Forum
64. How do you take measures to prevent freezing and maintain heat when shutting down the furnace in winter? - HCBBS Forum
65. 【Daily Question】- Every safety helmet must have the following three permanent markings (2 points for a reply, 4 points for a correct answer) - HCBBS Forum
66. For circulating water heat exchangers with different structures, how should they be put into use when establishing the circulating water system? - HCBBS Forum
67. Can activated carbon treat organic waste gas? - HCBBS Forum
68. I’m looking for a suitable company to switch to and work in the valve industry - HCBBS Forum
69. Are there any qualification exams available for registration this year? - HCBBS Forum
70. Seeking data on hydrofluoric acid concentration and freezing point - HCBBS Forum
71. It’s Thursday – why is the spam section so quiet? - HCBBS Forum
72. Does the steam supply pressure in the radiator have an impact on its performance? - HCBBS Forum
73. The second-rate companies where you work - HCBBS Forum
74. Qualification Examination for Pressure Pipeline Design Approval Personnel - HCBBS Forum
75. After the design of the lithium bromide absorption heat pump is completed, how can it be simulated? - HCBBS Forum
76. Purging plan for the device. . . - HCBBS Forum
77. One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 246 - HCBBS Forum
78. Regarding issues related to non-destructive testing: volume defects, surface defects - HCBBS Forum
79. What is the function of the HHC extractor in Linde’s cryogenic methanol wash? - HCBBS Forum
80. Precautions when adjusting the opening pressure of a safety valve - HCBBS Forum
81. Microbubble problems in airless spraying of polyurethanes - HCBBS Forum
82. How to choose radishes - HCBBS Forum
83. Use an air compressor to pressurize the tower and check whether the pressure gauge behind the bottom pump is accurate - HCBBS Forum
84. Please explain - HCBBS Forum
85. There was a general abort when the initial was discovered. How to translate this? - HCBBS Forum
86. There are also salts and acidic gases in the exhaust gas; why is falling film absorption generally used to remove them? - HCBBS Forum
87. Methanol combustion - HCBBS Forum
88. Regarding the pre-purge system for high-voltage motors - HCBBS Forum
89. How can one find out the operating pressure and design pressure of a heat exchanger? Please provide an answer! Thank you! - HCBBS Forum
90. I would like to share with you the method for calculating the flow restriction imposed by a valve on the fluid flow in a pipeline - HCBBS Forum
91. I’m new here; I hope to get information regarding spent alkaline solution as well as the ways to sell it. If any of you can help, I would be extremely grateful - HCBBS Forum
92. Does anyone know any manufacturers that produce level gauges with PTFE linings? - HCBBS Forum
93. To reduce the pressure in the distillation tower, the following is correct: - HCBBS Forum
94. Magnetic flap level gauge with purge ring? - HCBBS Forum
95. Aibojingdian Motor Protector - HCBBS Forum
96. Help: Which is more resistant to corrosion by ethylene glycol solution, copper or 304 stainless steel? - HCBBS Forum
97. What are the common types of pressure transmitters? Feel free to add more - HCBBS Forum
98. Difference between pipe characteristic tables, pipe grade tables, and pipe section material tables - HCBBS Forum
99. The trays in the vent tower are constantly washed over - HCBBS Forum
100. It’s a new order I got today; there are some things I need to ask my seniors about! ! ! ! - HCBBS Forum