English — Forum #723 (Page 618/642)

1. The issue of salt content in wastewater? - HCBBS Forum
2. At what temperature should the temperature of the water wall coil gasifier drop before the pump can be stopped? - HCBBS Forum
3. May I ask: Are saddle supports and ring supports used as supports for steel horizontal vessels? - HCBBS Forum
4. Fixed tube sheet heat exchanger - HCBBS Forum
5. After grinding the weld seam inside the container, is it a problem if a fine boundary can still be seen between the weld seam and the base material? - HCBBS Forum
6. Were the first zongzi thrown into the Miluo River sweet or salty? - HCBBS Forum
7. Issues regarding the reboiler inlet - HCBBS Forum
8. Boiler material - HCBBS Forum
9. How should “as-built standard” be translated? - HCBBS Forum
10. Is it necessary to install filters in the oil product discharge area? - HCBBS Forum
11. During constant-pressure and constant-temperature dehydration, does an excessively high liquid level in the three towers be detrimental to the dehydration process? - HCBBS Forum
12. Does toluene carbonize under high-temperature, anaerobic conditions? - HCBBS Forum
13. Is the chlorine buffer tank a pressure vessel in the production of sodium hypochlorite? - HCBBS Forum
14. What container is best for storing sample residues - HCBBS Forum
15. Daily Question June 15, 2015 (Safe Communication): 3 Wealth points for replies, 5 Wealth points for correct answers; participation comes with rewards - HCBBS Forum
16. Where does the backwash water from refineries usually go? - HCBBS Forum
17. Several questions about shielded metal arc welding - HCBBS Forum
18. Buy a centrifuge - HCBBS Forum
19. 【Daily Question】June 22: To improve the blast resistance index, which other components are not currently added to gasoline in China? - HCBBS Forum
20. Settings for BLOWDOWN - HCBBS Forum
21. The content of gas washing oil in crude benzene affects the formation of sulfur foam - HCBBS Forum
22. Excessive pressure drop in the spray tower - HCBBS Forum
23. Which brand offers high-quality dry screw pumps, and please provide specific examples of their practical applications - HCBBS Forum
24. Summary of submissions for HaiChuan Chemical Network’s [Father’s Day] essay competition - HCBBS Forum
25. Seeking information on the price of imported alkane isomerization catalysts – how much per ton? What is the price of reforming catalysts as well? - HCBBS Forum
26. Question 5 in the morning session of the 2011 case - HCBBS Forum
27. 40W LED explosion-proof lights for coal washing plants; 60W LED explosion-proof lights for chemical plants. How to choose explosion-proof lighting fixtures in areas with high hazards? - HCBBS Forum
28. Problems in distillation in atmospheric pressure columns: the phenomenon of simple processes becoming complex - HCBBS Forum
29. Daily Question June 16, 2015 (EIA Discussion): 3 wealth points for replies, plus 5 wealth points for correct answers - HCBBS Forum
30. Daily Question June 14, 2015 (Safe Communication): 3 wealth points for replies, 5 wealth points for correct answers; participation comes with rewards - HCBBS Forum
31. What standards do aluminum O-rings comply with, and what are the specific hardness requirements? - HCBBS Forum
32. Recommendations for carbon dioxide compressors - HCBBS Forum
33. [New Energy Applications] – “Photoactive” graphene material that can be used in fuel-free spacecraft - HCBBS Forum
34. Daily Question, June 12, 2015 (Safe Communication): 3 Wealth points as a reward for replying, 5 Wealth points for correct answers; participation comes with rewards - HCBBS Forum
35. Have you used gas-lubricated bearings? - HCBBS Forum
36. Double-acting cut-off valve - HCBBS Forum
37. Six traditional Chinese herbs should always be kept at home for daily use - HCBBS Forum
38. Have you gotten your power certificate this year? - HCBBS Forum
39. Starting method of burner cooling water pump - HCBBS Forum
40. Common problems with the slurry pump in catalytic units - HCBBS Forum
41. Working as an operator in a formaldehyde factory is harmful to health - HCBBS Forum
42. What disease is this? - HCBBS Forum
43. How is the liquid yield in catalytic reforming calculated? - HCBBS Forum
44. How is Hunan Anchun High-Tech Co., Ltd.? - HCBBS Forum
45. How to avoid flash explosions during grinding in a grinder - HCBBS Forum
46. Selection of process isolation diaphragm and filling fluid when selecting Rosemount pressure sensors - HCBBS Forum
47. How can one determine whether a condensing steam turbine has high or low power output? - HCBBS Forum
48. Why do some air coolers have air intake covers while others don’t? - HCBBS Forum
49. The flow rate in the hydrogen pipeline is too low - HCBBS Forum
50. Technologies related to rotary kilns - HCBBS Forum
51. Boiling point of propylene glycol methyl ether acetate under negative pressure - HCBBS Forum
52. Artificial trans fats are harmful to health; their use will be banned - HCBBS Forum
53. What would you do if you worked at such a design firm? - HCBBS Forum
54. On the calculation of the external temperature of a flat-wall heat-conducting wall - HCBBS Forum
55. Discussion on dust prevention, gas prevention, and protection against dust and gases! ! ! - HCBBS Forum
56. 8-character blind flange - HCBBS Forum
57. What are the factors that affect the ash content in slurry? - HCBBS Forum
58. The particle size distribution of coal slurry? - HCBBS Forum
59. Is anyone working with waterproof coatings? - HCBBS Forum
60. Seeking information on the process for producing methyl acetal from methanol - HCBBS Forum
61. Question 1 of the afternoon session on specialized knowledge in chemical engineering, 2014 - HCBBS Forum
62. The solid content in heavy oil catalytic slurry varies from high to low - HCBBS Forum
63. 2133333333 - HCBBS Forum
64. Industrial waste acid treatment technology - HCBBS Forum
65. Selection of material grades for medium-pressure steam - HCBBS Forum
66. DCS and MCC control of pumps - HCBBS Forum
67. High-pressure nitrogen pipeline purging - HCBBS Forum
68. Regarding the external insulation of mechanical pumps? - HCBBS Forum
69. Is it permissible to weld a grounding wire to the base after the pump has been installed, and what are the consequences? - HCBBS Forum
70. uop. Regeneration 3.5 - HCBBS Forum
71. Selection of level gauge for concentrated sulfuric acid storage tank - HCBBS Forum
72. The issue of the vibration level of the pipeline - HCBBS Forum
73. Questions regarding the Certified Safety Engineer exam in 2015 - HCBBS Forum
74. Caprolactam production distribution - HCBBS Forum
75. Balance valves in five-valve assemblies and three-valve assemblies - HCBBS Forum
76. Jokes about the Rockets’ player signings - HCBBS Forum
77. Some expert, please tell me what all these parameters are... - HCBBS Forum
78. Reasons for the high gas flow rate - HCBBS Forum
79. How to improve the quality of sodium hypochlorite with low effective chlorine content - HCBBS Forum
80. Let’s discuss the issue of leak prevention for unit instruments - HCBBS Forum
81. Recruiting personnel for boiler design, process engineering, and production - HCBBS Forum
82. Recommendations for books on process and instrumentation applications in the pharmaceutical industry - HCBBS Forum
83. A newcomer’s report on air separation – here is a summary article - HCBBS Forum
84. What are the advantages of having an extension for the pipe gallery, and what is the current mainstream approach? - HCBBS Forum
85. Introduction to the main features of CNC machine tools - HCBBS Forum
86. Issues with connecting the Molex SST-PB3-CLX Profibus-DP communication module to a computer - HCBBS Forum
87. Inconel 600’s resistance to salt and acid corrosion - HCBBS Forum
88. Issues regarding the replacement of the boiler installation, modification, and maintenance license? - HCBBS Forum
89. Is the basic exam for registered chemical engineers easy to pass? - HCBBS Forum
90. Which is the best self-acting control valve for lubricating oil systems? - HCBBS Forum
91. 【Weekly Topic】- 005- Is it necessary to establish a control table for wastewater operation parameters - HCBBS Forum
92. Questions about the relay dry contacts and 24V contacts? - HCBBS Forum
93. In the manufacturing of static equipment containers, there is such a comment regarding the technical requirements put forward to us by foreigners. - HCBBS Forum
94. The impeller inlet of the centrifugal pump has a pre-rotation speed - HCBBS Forum
95. Today is my grandfather’s birthday; I’m giving away some money here in search of blessings (as my funds are limited, each person can receive it only once) - HCBBS Forum
96. Can one register for the Note-taking and Chemistry exam across provinces? - HCBBS Forum
97. Considerations for human resource management in corporate acquisitions - HCBBS Forum
98. Issues with filtration and washing after the Grignard reaction - HCBBS Forum
99. Problems with the improper installation of the exhaust port in orifice plate flowmeters - HCBBS Forum
100. Axial displacement of Nisshiki Seikatsu pumps - HCBBS Forum