English — Forum #337 (Page 70/163)

1. Challenges in reverse osmosis cleaning - HCBBS Forum
2. Questions about energy conservation - HCBBS Forum
3. New process for ammonia-containing exhaust gas and liquid ammonia vaporization - HCBBS Forum
4. Complete Volume of the Chemical Engineering Encyclopedia - HCBBS Forum
5. Are plastic PE tanks now permitted for storing 30% hydrogen peroxide according to the regulations? - HCBBS Forum
6. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200318 - HCBBS Forum
7. Is it necessary to install a manual valve on the exhaust pipe of the non-condensable gas outlet of the heat exchanger? Is it better to leave it open? - HCBBS Forum
8. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200314 - HCBBS Forum
9. Could the experts here tell me? - HCBBS Forum
10. Unloading flow control - HCBBS Forum
11. Can carbon steel be used outdoors in Inner Mongolia? Plastic pipe? The temperature is so low - HCBBS Forum
12. Formaldehyde-amino resin process flow - HCBBS Forum
13. Temperature control for multiple parallel reactors - HCBBS Forum
14. Help needed! How does SW6 determine the main design parameters of the heat exchanger based on process conditions? - HCBBS Forum
15. The role of carbon wires in steelmaking - HCBBS Forum
16. Regarding external pipe corridors - HCBBS Forum
17. [Daily Question] Basic Process Knowledge (True/False: Fill in “√” for correct and “×” for incorrect) 2020.4.11 - HCBBS Forum
18. What is the typical salt output of a three-effect evaporator? - HCBBS Forum
19. Heat exchanger issues? - HCBBS Forum
20. Sulfur recovery - HCBBS Forum
21. Is it necessary to install a pressure gauge on the plate-type condenser? - HCBBS Forum
22. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200112 - HCBBS Forum
23. What do the solenoid valve arrows, F and DE in the PID diagram mean? - HCBBS Forum
24. Manual for Automation and Instrumentation Engineers - HCBBS Forum
25. Process flow diagram and plant layout diagram - HCBBS Forum
26. For sleeve thermometers, there is a deviation of about 1°C each time they are inserted and recalibrated. How can this be resolved? - HCBBS Forum
27. What considerations should be taken into account when performing open welding on heat transfer oil pipelines? Is there a standard process? - HCBBS Forum
28. A request for quotes has been issued for equipment procurement; is it still necessary to prepare a data sheet? - HCBBS Forum
29. Problems in the engineering calculations for equipment insulation - HCBBS Forum
30. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200403 - HCBBS Forum
31. How should the flow rate of liquefied hydrocarbons and flammable liquids be controlled when they enter storage tanks, and what standards must be followed? - HCBBS Forum
32. Request an ITP for the acceptance of wastewater treatment plant equipment - HCBBS Forum
33. There is a kind of reward called HaiChuan; you deserve it - HCBBS Forum
34. Is it normal that there is no temperature difference between the liquid-phase inlet of the reboiler and the gas-liquid mixture outlet? - HCBBS Forum
35. 【Synthetic Ammonia】Process Flow - HCBBS Forum
36. Do the SIS and ESD systems require high and low limit alarms to be set? - HCBBS Forum
37. How to determine the spacing for storing flammable liquids in spherical tanks - HCBBS Forum
38. In the production of chlor-alkali ion exchange membranes, if the free chlorine level in the brine is 0, how can there still be effective chlorine present? - HCBBS Forum
39. Safety valve outlet pipe - HCBBS Forum
40. Heating nitrogen with heat transfer oil – selection of shell-and-tube exchangers - HCBBS Forum
41. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200122 - HCBBS Forum
42. What is the difference between pressure displacement and purge displacement? - HCBBS Forum
43. Do I have to draw the shapes of the equipment myself in the equipment layout diagram? - HCBBS Forum
44. Seeking solid quantitative feeding equipment. - HCBBS Forum
45. Hello everyone, regarding ASME B31.3 welding procedure qualification issues, - HCBBS Forum
46. Is there anyone who can share the standard document NB/T 47003.1-2009 \"Steel Welded Atmospheric Pressure Vessels\"? - HCBBS Forum
47. The rupture disc is located upstream of the safety valve; how should the back pressure of the rupture disc be considered? - HCBBS Forum
48. Reasons for high pressure difference in coal-based ethylene glycol hydrogenation unit - HCBBS Forum
49. I would like to ask the experts: what is the difference between an axonometric diagram designed by oneself and one prepared by the construction party? - HCBBS Forum
50. The commuting issue between the control room of large factories and the equipment area - HCBBS Forum
51. What does this line at the bottom of the pool represent? - HCBBS Forum
52. Ethylene cracker and propylene cracker in ethylene cracking? - HCBBS Forum
53. [Daily Question] Basic Process Knowledge (True/False Questions) 20191130 - HCBBS Forum
54. Air separation - HCBBS Forum
55. Calculation of fuel gas consumption for furnace heating in incinerators - HCBBS Forum
56. Is there anyone who is well-versed in distillation? - HCBBS Forum
57. Baijiu factory piping diagram (with cellars) - HCBBS Forum
58. Do Class A buried storage tanks still require spray cooling? - HCBBS Forum
59. Are there any software available for calculating various equations or complex systems of equations? - HCBBS Forum
60. Why is the compensation for those working in automation and electrical engineering in design institutes generally higher than that for those in other fields, and why do they often not have to work overtime? - HCBBS Forum
61. What are the methods for finding business projects? - HCBBS Forum
62. What is an AD fan? What are the uses of AD powder? - HCBBS Forum
63. What is the working principle and effect of a transient voltage suppression diode? - HCBBS Forum
64. May I ask how to calculate whether condensate is produced after toluene in exhaust gas condenses? - HCBBS Forum
65. What property methods are required to simulate the pyrolysis of light hydrocarbons in a pyrolyzer to produce low-carbon olefins? - HCBBS Forum
66. Regarding the issue of adding barrel armor for unloading into tanks in the tank farm - HCBBS Forum
67. How far can Evonik’s carbonylation membrane reactors go? - HCBBS Forum
68. [Daily Question] Basic Process Knowledge (True/False: Fill in “√” for correct and “×” for incorrect) May 18, 2020 - HCBBS Forum
69. On the relationship between volume concentration and freezing point of propylene glycol-water mixtures - HCBBS Forum
70. Formaldehyde production process - HCBBS Forum
71. Does the drying of paint fall under the paintwork section? Does it belong to Category A? - HCBBS Forum
72. Calculation of heat exchange area for heat exchangers - HCBBS Forum
73. Feed issues in falling film evaporators - HCBBS Forum
74. [Daily Question] Basic Process Knowledge (True/False) 20190520 - HCBBS Forum
75. Seeking advice: when collecting the product in distillation operations, should it be based on achieving stability through full reflux, or should it be determined by analyzing the composition of the condensate? - HCBBS Forum
76. Salt anti-caking agent - HCBBS Forum
77. Liquid chlorine pump reflux - HCBBS Forum
78. Is a building considered to have 3 floors if it has a framework? Is it necessary to enclose the staircase and create a stairwell? Which code provision governs this? - HCBBS Forum
79. [Daily Question] Basic Process Knowledge (True/False Questions) 20190825 - HCBBS Forum
80. Regarding the isolation valves and bypasses before and after the control valve - HCBBS Forum
81. When high-pressure steam pipes enter the plant, temperature and pressure reducers need to be added. Is it necessary for the design institute to modify the drawings or for the relevant departments to... - HCBBS Forum
82. [Daily Question] Basic Process Knowledge (True/False Questions) 20190830 - HCBBS Forum
83. The full version of ASTM-2019 is now available. The file is too large to be uploaded; if anyone needs it, please leave your email address or use another method to obtain it - HCBBS Forum
84. I would like to ask the experts: how can we make full use of the heat from steam? - HCBBS Forum
85. How to choose a fan - HCBBS Forum
86. [Daily Question] Basic Process Knowledge (True/False Questions) 20190528 - HCBBS Forum
87. The standards require that tightening should not be done under pressure. But during operation, isn’t thermal tightening essentially tightening under pressure? Isn’t that a contradiction? - HCBBS Forum
88. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190923 - HCBBS Forum
89. [Daily Question] Basic Process Knowledge (True/False Questions) 20190724 - HCBBS Forum
90. Seek the large-scale production process for oxidizing phenol using hydrogen peroxide to produce hydroquinone and catechol - HCBBS Forum
91. An antioxidant needs to be added to the ethylene glycol solution of PEG2000 - HCBBS Forum
92. State of steam after pressure reduction - HCBBS Forum
93. Silicon-carbon alloy- - HCBBS Forum
94. Flame burner blockage - HCBBS Forum
95. [Daily Question] Basic Process Knowledge (True/False Questions) 20190702 - HCBBS Forum
96. Formula for calculating pipeline span - HCBBS Forum
97. Equipment catalog from the design institute - HCBBS Forum
98. A device is connected in parallel to the cooling water system of the soda sampler; I’m not sure what it’s for - HCBBS Forum
99. Calculation method for neutralization tanks - HCBBS Forum
100. Selection of demineralized water equipment - HCBBS Forum