English — Forum #337 (Page 61/163)

1. Which wastewater cannot be treated using MVR evaporation? - HCBBS Forum
2. What are the commonly used standards in chemical engineering design? - HCBBS Forum
3. Based on these data, can the oxygen content in the deaerator outlet water reach 7 μg/L? ? ? - HCBBS Forum
4. Seeking hydrazine hydrate production, technology, and design firms - HCBBS Forum
5. One doesn’t know the composition and content of the mixture to be separated and purified, nor does one know what needs to be separated and recovered - HCBBS Forum
6. I need help: can butt-weld flanges be used for PE pipe flanges? - HCBBS Forum
7. Market information on chemical products: ways to find it - HCBBS Forum
8. Is evaporation crystallization feasible for sodium hydroxide waste liquid? How much can be earned from the concentration? ? - HCBBS Forum
9. Regarding the issue of restoring the floating disk of an internal floating disk tank to its suspended position - HCBBS Forum
10. Polymerization inhibitors to prevent acrylic acid polymerization - HCBBS Forum
11. Seeking the English abbreviation for diesel hydroprocessing unit - HCBBS Forum
12. Is this in compliance with the standards? - HCBBS Forum
13. Do the guys from the design institute have any side jobs? It’s hard to make money from design work - HCBBS Forum
14. Cooling issues of shielded pumps - HCBBS Forum
15. [Daily Question] Basic Process Knowledge (True/False) 20191126 - HCBBS Forum
16. Discussion on the recycling of waste hydrochloric acid - HCBBS Forum
17. Distance between Class B equipment and control room - HCBBS Forum
18. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200222 - HCBBS Forum
19. Hydroprocessing Processes and Engineering, Second Edition - HCBBS Forum
20. Ammonia tank replacement - HCBBS Forum
21. Can a negative pressure be connected to the outlet side of the safety valve? - HCBBS Forum
22. What is coal chemical engineering? - HCBBS Forum
23. Does a shell-and-tube heat exchanger (using 0.3MPA saturated steam and water) require insulation? - HCBBS Forum
24. Can the design pressure of the outlet pipeline of the safety valve at a CNG refueling station be at atmospheric pressure? - HCBBS Forum
25. How to install a reflux mirror? - HCBBS Forum
26. Ammonia-based desulfurization technology (Jiangnan Environmental Protection) - HCBBS Forum
27. Treatment of organic volatile exhaust gases - HCBBS Forum
28. Seeking advice on the installation of emergency relief valves and safety valves in tanks Category A B, Category B A, Category C A, as well as in liquefied hydrocarbon storage tanks - HCBBS Forum
29. Are there two formulas for calculating the nominal wall thickness of pipes? - HCBBS Forum
30. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200109 - HCBBS Forum
31. On the calculation of safety valve discharge volume - HCBBS Forum
32. How to draw a thermal equilibrium diagram - HCBBS Forum
33. Manual for the Design and Selection of Petrochemical Equipment – Steels for Petrochemical Equipment - HCBBS Forum
34. Who has the SEI American standard pipe grade table? Please share it, thanks - HCBBS Forum
35. Issues regarding enclosed factories in GB51283-2020 - HCBBS Forum
36. Charges for Hazard and Operability Analysis and SIL Analysis - HCBBS Forum
37. Heat transfer coefficient K of wound tube heat exchanger - HCBBS Forum
38. [Daily Question] Basic Process Knowledge (True/False Questions) 20191111 - HCBBS Forum
39. Level gauge - HCBBS Forum
40. What material should be used for flame arresters on acidic exhaust gases (such as small amounts of hydrochloric acid, hydrogen bromide, dichloroethane, etc.)? - HCBBS Forum
41. Industrial production of sodium cyanate - HCBBS Forum
42. An explosion caused by a liquid oxygen leak. - HCBBS Forum
43. High and low pressure venting at CNG filling stations - HCBBS Forum
44. Oil tank breathing relationship - HCBBS Forum
45. In a factory building, how much area can one ton of steam supply? - HCBBS Forum
46. Is it useful to treat the spent cation and anion resins from mixed-bed demineralization units? - HCBBS Forum
47. Difference between two-pin and three-pin boat switches - HCBBS Forum
48. Seek equipment for sodium trichloroisocyanurate - HCBBS Forum
49. Why are there different grades for the same bolt material and size? - HCBBS Forum
50. Temperature drop issues in saturated steam and superheated steam - HCBBS Forum
51. What are the ways to prevent siphoning in gas and liquid pipelines? - HCBBS Forum
52. [Daily Question] Environmental Protection Knowledge (Multiple Choice) 20200703 - HCBBS Forum
53. [Daily Question] Basic Process Knowledge (True/False) 20191113 - HCBBS Forum
54. Distance between overhead coal gas pipelines and buildings - HCBBS Forum
55. I would like to ask that since the design of petrochemical enterprises follows petrochemical regulations, the architectural and structural design of process units should comply with building fire protection regulations... - HCBBS Forum
56. Transformation of crystallization in the stripping gas line - HCBBS Forum
57. Start-up of catalytic fractionation - HCBBS Forum
58. Discussion on the cross-sectional area of the collection main pipe for the vent pipes behind the explosion-proof membranes of multiple containers! - HCBBS Forum
59. Can one undertake the design of a new factory for projects that fall outside their qualified scope without having the relevant qualifications? - HCBBS Forum
60. Unloading at Class A plant area - HCBBS Forum
61. The feeding and commissioning of the Hengyi Brunei PMB project was successful on the first attempt - HCBBS Forum
62. Pressure balance line - HCBBS Forum
63. When should pipe supports and hangers be unlocked during construction? - HCBBS Forum
64. Combination of safety valves and burst discs as safety devices – requirements regarding the distance between them. - HCBBS Forum
65. Who has the formula for calculating the density of multi-component mixed gases? Thank you first! - HCBBS Forum
66. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200111 - HCBBS Forum
67. Fluidized bed reactor - HCBBS Forum
68. 【JST-201】One-on-one discussion thread: TianDa distillation technology and process packages - HCBBS Forum
69. [Daily Question] Basic Process Knowledge (True/False) 20191120 - HCBBS Forum
70. Which reaction vessels require manual liquid discharge - HCBBS Forum
71. [Daily Question] Basic Process Knowledge (True/False: Fill in “√” for correct and “×” for incorrect) May 6, 2020 - HCBBS Forum
72. Distillation vacuum boiling point environment feeding problem - HCBBS Forum
73. Introduction to the manufacturing process of non-woven fabric - HCBBS Forum
74. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200217 - HCBBS Forum
75. Technical Specifications and Safety Measures for Pressurized Plugging of Steel Pipes - HCBBS Forum
76. Have you ever used ethylene glycol as the heating medium? Is there any problem with heating to 150℃? - HCBBS Forum
77. How to separate methyl acetate from **furan azeotropes - HCBBS Forum
78. Could some expert help analyze whether the following titanium dioxide was produced by the sulfate method or the chloride method? - HCBBS Forum
79. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200104 - HCBBS Forum
80. This book - HCBBS Forum
81. Where can I check the toxicity and flash point? - HCBBS Forum
82. Can the alkali slag tank and the oil scum tank in the wastewater treatment plant be located in the same tank area? - HCBBS Forum
83. Is it easy to get into the solvent recycling industry? - HCBBS Forum
84. May I ask whether a PP-lined manhole with a diameter of 500 must have an opening of 450? It says that people need to go in for spark testing - HCBBS Forum
85. During the steam sterilization process, is it necessary to maintain pressure? Can steam be allowed to enter and exit continuously? How to use steam sterilization for equipment at atmospheric pressure - HCBBS Forum
86. I’m a complete beginner who wants to become an individual trader in the chemical industry – are there any websites or other resources you can recommend? Thank you all. - HCBBS Forum
87. [Daily Question] Basic Process Knowledge (Multiple Choice) 20191230 - HCBBS Forum
88. Desulfurization and denitrification, process equipment manuals, engineering examples..... - HCBBS Forum
89. Can anyone help me see the coal-to-methanol gasification flow chart? - HCBBS Forum
90. For 0.2MPa saturated steam cooled by circulating water, what is a suitable value for the K factor of stainless steel in shell-and-tube heat exchangers? - HCBBS Forum
91. [Daily Question] Basic Process Knowledge (True/False Questions) 20191115 - HCBBS Forum
92. Working principle of the start-up valve for Hangqi condensing steam turbines - HCBBS Forum
93. What are the factors that affect the absorption rate of carbonizers? - HCBBS Forum
94. Why does subcooled liquid hardly suffer from cavitation when pumped? - HCBBS Forum
95. Ownership of mobile platforms - HCBBS Forum
96. Anti-clogging performance of plate corrugated structured packing and Pall rings, stepped rings - HCBBS Forum
97. [Daily Question] Basic Process Knowledge (Multiple Choice) 20191027 - HCBBS Forum
98. How to recycle the 0.6 MPa excess low-pressure steam in the system - HCBBS Forum
99. Calculation of equipment exhaust airflow - HCBBS Forum
100. What are the requirements to enter a design institute? - HCBBS Forum