English — Forum #723 (Page 545/642)

1. Structure of submersible pumps - HCBBS Forum
2. The circulating water system uses reclaimed water as make-up water; the quality of this reclaimed water often has a pH below 7 and very low alkalinity, with a concentration ratio of 2.5 for the circulating water - HCBBS Forum
3. Problems with the centrifuge - HCBBS Forum
4. Regarding loop resistance - HCBBS Forum
5. What determines the nozzle diameter of the injector on the regeneration tank? - HCBBS Forum
6. System pickling (citric acid) - HCBBS Forum
7. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for those who participate； Question 155 - HCBBS Forum
8. What accessories are needed for an ethylene glycol storage tank? - HCBBS Forum
9. How should I provide the electrical engineering team with the necessary requirements for pipeline electric heat tracing? - HCBBS Forum
10. May I ask who has design information on ion exchange adsorption towers and scrubber towers, as well as design information on solvent extraction and mixed clarification tanks? - HCBBS Forum
11. Regarding the compressor displacement issue - HCBBS Forum
12. Chemical Engineering in Daily Life – Question 39: On an airplane, if you feel cold, would you use a small blanket to cover your upper body or your lower body? - HCBBS Forum
13. Regarding the instrument specification sheet - HCBBS Forum
14. Does anyone know which design institute was responsible for the 500,000-ton coal tar hydrogenation project at Jiuquan Iron and Steel Co., Ltd.? - HCBBS Forum
15. Chromatograph calibration cycle - HCBBS Forum
16. 【Weekly Topic】- A decrease in the sludge volume index can render the sludge inactive - HCBBS Forum
17. How many meters should the two loading and unloading nozzles for Class A flammable liquids be away from the fence? - HCBBS Forum
18. What is the purpose of providing visual inspection holes on a fixed roof? - HCBBS Forum
19. 【Weekly Topic】Slurry particle size control, focusing on 200 mesh and 325 mesh - HCBBS Forum
20. [Daily Question] Sewage Knowledge (August 24) (2 points for an answer, 4 points for a correct answer) - HCBBS Forum
21. Hot water boiler heating - HCBBS Forum
22. Steps for transformer zero shift - HCBBS Forum
23. Daily Question Challenge 8.22: 2 wealth rewards for participation, 6 wealth rewards for correct answers - HCBBS Forum
24. Is this company a **chemical manufacturing enterprise** - HCBBS Forum
25. Was there DCS in the 90s? - HCBBS Forum
26. Seeking help for two types of wastewater treatment - HCBBS Forum
27. What are some tips for reducing noise from crane reducers? - HCBBS Forum
28. Enroll in training courses for the Professional Examination for Registered Power Engineers - HCBBS Forum
29. Issue with manholes in the circulating water tank - HCBBS Forum
30. MTBE=Create a Beautiful Earth - HCBBS Forum
31. Changing careers in safety and environment - HCBBS Forum
32. Dear experts, I was wondering which chemical plants and refineries are currently in the process of being built these days? - HCBBS Forum
33. One expert opinion is a analysis of the individual and societal risks associated with the use of supplemental oxygen - HCBBS Forum
34. Weekly topic: 5 wealth points for those who answer correctly, 2 wealth points for participation； Question 161 - HCBBS Forum
35. 【Daily Question】August 28 – Knowledge about self-priming pumps (+2 for the first 80 participants, +3–8 extra for correct answers...) - HCBBS Forum
36. 【Daily Question】Question from Issue 20150827 - HCBBS Forum
37. What is the boiling point of a formaldehyde solution with a concentration of about 45%, at a pressure of 25 kPa (A)? - HCBBS Forum
38. Qinghua Overseas Projects - HCBBS Forum
39. What should be the maximum liquid level in a vertical atmospheric storage tank? - HCBBS Forum
40. What are the causes of explosions inside the zinc roasting waste heat boiler? ? - HCBBS Forum
41. Issues with sealed gland fittings - HCBBS Forum
42. Polarless control of compressor switching - HCBBS Forum
43. Use of quench water filters - HCBBS Forum
44. Chemical storage tank labeling - HCBBS Forum
45. For so-called schematic diagrams, which ones are necessary to draw? - HCBBS Forum
46. 【Daily Question】Question from Issue 20150821 - HCBBS Forum
47. Regarding the remanufacturing of the centrifugal pump foundation - HCBBS Forum
48. How to control the circulation air volume for Innovene polypropylene grades? - HCBBS Forum
49. What is the sequence for acid cleaning, pressure testing, and oil filling of the lubricating oil pipeline? - HCBBS Forum
50. Boiler Foundation Questions 7: Glossary Explanations: (A certain score will be given to the top 30) - HCBBS Forum
51. Function and diameter of the flash tank - HCBBS Forum
52. Sign-in record post from August 27, 2015 - HCBBS Forum
53. How is ion exchange resin defined? - HCBBS Forum
54. What is the purpose of Redraw in PRO/II? - HCBBS Forum
55. The issue of DCS DI input points not releasing electricity - HCBBS Forum
56. How to determine whether welding is done manually or with gas shielding based on the shape of the weld seam - HCBBS Forum
57. Seek formulation and production process for emulsifiers specific to diesel engines - HCBBS Forum
58. Transformation catalyst deactivation - HCBBS Forum
59. Design of packed towers - HCBBS Forum
60. Problems with acidic water vapor stripping for water purification - HCBBS Forum
61. Sign-in record post from August 21, 2015 - HCBBS Forum
62. Introduction to the advantages of gantry cranes with box girders - HCBBS Forum
63. Selection of heat exchangers for heat exchange stations! - HCBBS Forum
64. The impact of tower diameter on distillation towers - HCBBS Forum
65. Welding and corrosion repair measures for titanium metal - HCBBS Forum
66. Problems with the main safety entrances and exits of the factory area - HCBBS Forum
67. Nuclear power project requires pipeline stress engineers - HCBBS Forum
68. Use of high-pressure gas in heating furnaces - HCBBS Forum
69. Boiler Foundation Questions 11: Glossary Explanations: (A certain score will be given to the top 30) - HCBBS Forum
70. Why is the exhaust pressure at stage 1 high when operating at 50% load with reciprocating compression? - HCBBS Forum
71. Should the tube sections be rounded first and then inspected for defects, or vice versa? - HCBBS Forum
72. 【Basic Knowledge of Glossary Definitions for “Polymers and Materials”-028】Glossary definitions related to polymers - HCBBS Forum
73. Water supply has been stopped for 3 months; now it needs to be resumed. What should be done? - HCBBS Forum
74. What should be done if there is a current interruption when increasing the current in the electrolyzer of the caustic soda process? - HCBBS Forum
75. Seek advice on transformation design - HCBBS Forum
76. Issues related to shielded pumps - HCBBS Forum
77. What desulfurizing agents are generally used for desulfurization after the transformation? - HCBBS Forum
78. Chemical Engineering in Daily Life – Question 32: Why did our ancestors dry salt in pools rather than cooking it in pots? Standard answer already available - HCBBS Forum
79. Must the manhole flange cover of a liquid chlorine storage tank be made of forgings? - HCBBS Forum
80. Request: Drawings and calculations for a 20㎡ spiral plate heat exchanger - HCBBS Forum
81. I need professional translations for several pipe fittings - HCBBS Forum
82. I want to know what the differences are between sulfur recovery processes in coal chemical industry and petrochemical industry - HCBBS Forum
83. Non-folded conical head design - HCBBS Forum
84. Seeking methods for impurity analysis in MDI synthesis - HCBBS Forum
85. Concentration process and cost of 75% sulfuric acid? - HCBBS Forum
86. Gas tar dust content - HCBBS Forum
87. Difference between plunger valve and globe valve - HCBBS Forum
88. Deformation of the black water filter screen and screen replacement issues - HCBBS Forum
89. How to cut solid asphalt into small pieces, or transfer melted asphalt into a flask - HCBBS Forum
90. Zinc titanate information - HCBBS Forum
91. China’s policies on energy conservation and environmental protection (industrial wastewater treatment) as well as the environment during the 13th Five-Year Plan period - HCBBS Forum
92. Which domestic manufacturer produces the best orifice plate flowmeters? - HCBBS Forum
93. What aspects need to be discussed during the technical exchange of process packages when selecting them? - HCBBS Forum
94. Is it appropriate to drill again after the flange holes are misaligned and welded using screws? - HCBBS Forum
95. Schemes for the proper installation and maintenance of planetary gear reduction motors - HCBBS Forum
96. An overview of the basic knowledge regarding the oil used in single-girder cranes - HCBBS Forum
97. Severe fluctuations in negative pressure in the heating furnace! - HCBBS Forum
98. Measures for transforming the raw material structure and energy structure of nitrogen fertilizer enterprises - HCBBS Forum
99. Searching for companies specializing in clean transfer of powder particles - HCBBS Forum
100. Output of the low-pressure rotary film deaerator - HCBBS Forum