English — Forum #337 (Page 106/163)

1. Which of 304 stainless steel and 316 or 316L stainless steel is more resistant to acid corrosion? - HCBBS Forum
2. What are the differences between steam evacuators, vacuum pumps, and claw-type evacuators in vacuum application? - HCBBS Forum
3. Research and Discussion on Process Issues Related to the Major Explosion Incident at Lianyungang Juxin Biotechnology Co., Ltd. on December 9 - HCBBS Forum
4. For a shell-and-tube heat exchanger, the operating temperature in the tube side is 300 degrees with a pressure of 10 MPa, while the temperature on the shell side is 50 degrees with a pressure of 0.6 MPa. What are the design temperature and pressure for the shell? - HCBBS Forum
5. The principle of the ejector - HCBBS Forum
6. May I ask if the maximum back pressure of the steam trap on the steam pipeline can reach the same level as the steam pressure? - HCBBS Forum
7. Fundamentals of Manufacturing Processes (Multiple Choice) 20180918 - HCBBS Forum
8. What is the equivalent material in China for Alloy 800H? - HCBBS Forum
9. The specific process flow for producing sulfuric acid industrially using sulfur dioxide - HCBBS Forum
10. Issues related to design qualifications - HCBBS Forum
11. What causes foaming when isothiazolinones are added to circulating water? - HCBBS Forum
12. Is the safety valve drain pipe designed for normal pressure? ? - HCBBS Forum
13. Wrapping gasket 620*540*320-Φ18 - HCBBS Forum
14. Tiazolidinedione - HCBBS Forum
15. Outlet pressure gauge - HCBBS Forum
16. Question: When calculating the wind pressure of an exhaust fan, what is the gas temperature indicated on the fan’s nameplate? 20℃ or 200℃ - HCBBS Forum
17. Biological desulfurization technology for biogas - HCBBS Forum
18. 20% waste hydrochloric acid neutralization process - HCBBS Forum
19. Wills' Mineral Processing Technology: An Introduction to the Practical Aspe - HCBBS Forum
20. 【HVAC Version】Daily Question 20180613 - HCBBS Forum
21. Wall thickness calculation results - HCBBS Forum
22. Calculation of reaction hydrogen-to-oil ratio - HCBBS Forum
23. Fluid flow display - HCBBS Forum
24. What are the advantages of using air coolers and water coolers together compared to using air coolers and water coolers separately? - HCBBS Forum
25. [Daily question] [Static Equipment Exchange Edition...Question 10] Multiple choice question on November 23, 2018... - HCBBS Forum
26. Synthesis techniques of light stabilizers 3529, 2020, 119, 4050 - HCBBS Forum
27. Oligomers keep entering the vacuum system of our unit (two screw compressors and two Roots compressors). Is there any way to remove these oligomers at the upstream stage? We’re currently using a shell-and-tube heat exchanger; the condensation collects inside the tube side, making it difficult to clean. Could everyone give some suggestions? - HCBBS Forum
28. Searching for Class A qualification in chemical engineering design - HCBBS Forum
29. The principle of oil filtration by filters - HCBBS Forum
30. Pressure pipeline - HCBBS Forum
31. Help: Throttle orifice plates for vacuum pipelines - HCBBS Forum
32. Critical pressure and critical temperature of hydrochloric acid - HCBBS Forum
33. What is the purpose of setting the jacket water temperature TIc222 for polypropylene R200? - HCBBS Forum
34. Reduce water pressure - HCBBS Forum
35. In the PID diagram, what materials do the following codes represent respectively? - HCBBS Forum
36. Does the qualified level of flaw detection affect the flaw detection ratio? - HCBBS Forum
37. The operating pressure is 30 MPa, and the set pressure is 33 MPa. Can a regular flare be connected to the outlet of the safety valve? - HCBBS Forum
38. How to start up heterogeneous azeotropic distillation? For example, the separation of tert-butanol from water - HCBBS Forum
39. Steam safety valve outlet pipe - HCBBS Forum
40. What is the correct orientation for installing this valve? - HCBBS Forum
41. Equipment layout - HCBBS Forum
42. What are the criteria for selecting pipe materials? - HCBBS Forum
43. There are calculations regarding the mixing of flue gas volumes - HCBBS Forum
44. Pump inlet - HCBBS Forum
45. Renovation of low-pressure steam generators - HCBBS Forum
46. Seeking advice on the Txy diagram for benzene/toluene - HCBBS Forum
47. Does the reaction between thionyl chloride and 2,4,6-trifluorobenzoic acid fall under the category of hazardous chemical processes subject to strict regulation? - HCBBS Forum
48. After degreasing, pickling, and passivating 316L sanitary pipes, there is still black residue left when wiped with cotton swabs! ! ! - HCBBS Forum
49. How to use a pressure relief valve - HCBBS Forum
50. Pipeline water flow rate calculation - HCBBS Forum
51. Steam pipes are inserted directly into the storage tank for heating; is it acceptable to use rubber-lined material for the tank? - HCBBS Forum
52. Are there any books that can recommend knowledge on dryer air volume and fan selection? - HCBBS Forum
53. Fundamentals of Manufacturing Processes (Multiple Choice) 20180718 - HCBBS Forum
54. Why does the gas phase recovery line bend? - HCBBS Forum
55. 【HVAC Version】Daily Question 20180619 - HCBBS Forum
56. I would like to ask whether PP material can be used as the material for equipment in areas with explosion hazards - HCBBS Forum
57. Flame arrester on the reactor vessel - HCBBS Forum
58. Basic Process Knowledge (Multiple Choice) 20180621 - HCBBS Forum
59. Complex and misleading nonsense; simple and clear reveals the truth. - HCBBS Forum
60. How much is 1 ton of low-pressure steam? - HCBBS Forum
61. Hydraulic natural gas vehicle refueling station - HCBBS Forum
62. What is the comparison of the advantages and disadvantages of heat exchange using atmospheric pressure equipment, external coils, jackets, and internal coils? - HCBBS Forum
63. Images of mechanical root cleaning - HCBBS Forum
64. How to draw clamps in a single-line diagram - HCBBS Forum
65. Chinese version of ISO15614.1-2017 standard and welding procedure qualification form template - HCBBS Forum
66. Problems in the design of high-pressure steam condensate - HCBBS Forum
67. Fuel selection for the new plant site: Natural gas & semi-coke - HCBBS Forum
68. Fundamentals of Manufacturing Processes (Multiple Choice) 20180831 - HCBBS Forum
69. Basic Process Knowledge (Multiple Choice) 20181104 - HCBBS Forum
70. Air-fuel ratio - HCBBS Forum
71. Level migration - HCBBS Forum
72. Calculation problems for flash tanks - HCBBS Forum
73. Basic Process Knowledge (Multiple Choice) 20181121 - HCBBS Forum
74. Regarding the density of materials at different temperatures - HCBBS Forum
75. Weld material verification - HCBBS Forum
76. For three-effect evaporation and crystallization of ammonium sulfate, I already have a salt collecting leg. Do I still need a cyclone? - HCBBS Forum
77. Satellite Petrochemicals - HCBBS Forum
78. How do I look up this table? - HCBBS Forum
79. Purge settings - HCBBS Forum
80. How to remove moisture from 2000 m3/h of air? - HCBBS Forum
81. hysys component input - HCBBS Forum
82. Question: The air filter element needs to be replaced when the pressure difference exceeds 0.7 bar. Where does this 0.7 bar standard come from? - HCBBS Forum
83. In what situations are PP/FRP used for hydrochloric acid storage tanks, and in what situations is FRP sufficient on its own? - HCBBS Forum
84. Why does the pressure tube need to have a certain slope? ! - HCBBS Forum
85. Can’t understand the gauge symbols - HCBBS Forum
86. Notice on the Merger of Process Area Sections - HCBBS Forum
87. Discussion on safety distances for liquid ammonia - HCBBS Forum
88. Requirements for the ventilation rate in boiler room design! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! - HCBBS Forum
89. Laboratory instruments and equipment - HCBBS Forum
90. Does anyone have past entries from the Chemical Engineering Safety Design Competition? Urgently needed, thank you - HCBBS Forum
91. Fuel oil desulfurization technology - HCBBS Forum
92. How to control the 1.0Mpa pipeline network throughout the plant - HCBBS Forum
93. How to handle excess sulfuryl chloride (several hundred kilograms)? - HCBBS Forum
94. Is it better to bury the circulating water pipes directly in the ground or to run them in trenches, in order to prevent freezing? - HCBBS Forum
95. Water quality requirements for pipeline pressure testing - HCBBS Forum
96. **Process condensate - HCBBS Forum
97. Seek absorption methods for the emission of residual phosgene and hydrogen chloride gases in exhaust gases - HCBBS Forum
98. Thoughts on the production of iron-molybdenum formaldehyde - HCBBS Forum
99. Seek advice on the separation of alcohols after they are dissolved in water - HCBBS Forum
100. Function of the acid mist collector pipeline - HCBBS Forum