English — Forum #337 (Page 93/163)

1. Temperature measurement under vacuum conditions - HCBBS Forum
2. Distillation separation of 1,2-dichloropropane and chloroform (30%-40%) - HCBBS Forum
3. [Daily Question] [Static Equipment Exchange Edition...Question 111] Adapted multiple choice question on April 21, 2019...all the best - HCBBS Forum
4. What to do if the circulating water temperature is high? - HCBBS Forum
5. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190130 - HCBBS Forum
6. The temperature is negative during reactor purging - HCBBS Forum
7. HG20559-93 Specifications for the Design of Piping and Instrumentation Diagrams (HG20559.1~7-93 including appendices) - HCBBS Forum
8. Issue of explosion protection classification for Category C media; request to temporarily make it the top topic of discussion~ - HCBBS Forum
9. 【Daily Question】 【AC Version for Static Equipment...Question 61】 March 2, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
10. MDEA Dry Gas Desulfurization Shutdown Plan - HCBBS Forum
11. What kind of filter is suitable for filtering salicylic acid crystals, for the purpose of crystallization filtration? - HCBBS Forum
12. Please provide papers or information on the progress in the development of sulfur-resistant methanation catalysts - HCBBS Forum
13. 【Daily Question】 【AC Version for Static Equipment...Question 94】 April 4, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
14. Standards for energy consumption quotas of methanol-to-hydrogen plants - HCBBS Forum
15. 【Daily Question】 【AC Version for Static Equipment...Question 20】 January 20, 2019 – True/False Multiple Choice Question...Making Continuous Progress - HCBBS Forum
16. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190128 - HCBBS Forum
17. After the water circulation in the vacuum system, what method can be used to remove all the water? - HCBBS Forum
18. Discussion on piping for the separation and connection system - HCBBS Forum
19. 【Daily Question】 【AC Version for Static Equipment...Question 62】 March 3, 2019 Revised multiple-choice questions...Better tomorrow - HCBBS Forum
20. [Daily Question] Basic Process Knowledge (True/False Questions) 20190402 - HCBBS Forum
21. 【Daily Question】 【AC Version for Static Equipment...Question 118】 April 28, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
22. 【Daily Question】 【AC Version for Static Equipment...Question 64】 March 5, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
23. Chimney calculation - HCBBS Forum
24. The concentration process of spent sulfuric acid is not working well - HCBBS Forum
25. Is dichloromethane gas easy to condense? How should dichloromethane be stored, and how can the dichloromethane vapor produced be recovered? - HCBBS Forum
26. Seeking methods to deactivate methanol synthesis catalysts - HCBBS Forum
27. Seek the production process for anhydrous sodium acetate product - HCBBS Forum
28. 【Daily Question】 【AC Version for Static Equipment...Question 21】 January 21, 2019 – True/False Question...May all your wishes come true - HCBBS Forum
29. The application of rotary evaporators in high-vacuum distillation - HCBBS Forum
30. Magnesium separation from aluminum ash - HCBBS Forum
31. Problems with the use of grating plates and patterned steel plates in the production facilities of LPG deep processing enterprises - HCBBS Forum
32. Fundamentals of Processing Technology (Multiple Choice) 20181128 - HCBBS Forum
33. Questions regarding the establishment of explosion-proof areas - HCBBS Forum
34. Please help me guys, is the meter in the red box the condenser? Why add a slanted haircut? ? - HCBBS Forum
35. What are the reasons for sand leakage in quartz sand filters? At the bottom, from top to bottom, there is a graded sand cushion + dome-shaped porous plate - HCBBS Forum
36. The issue of pipeline diameter at the control valves at both ends of the flow meter - HCBBS Forum
37. What does this diagram mean? - HCBBS Forum
38. Is the calculation method for steam jet pumps applicable to air ejectors? - HCBBS Forum
39. Methods for querying or calculating molecular diameter - HCBBS Forum
40. About oxygen in pipes - HCBBS Forum
41. [Daily Question] Basic Process Knowledge (True/False Questions) 20190310 - HCBBS Forum
42. Accidents that occur due to anti-condensation and anti-freezing measures in winter! - HCBBS Forum
43. China’s largest and most advanced coal-based ethylene glycol production facility comes online - HCBBS Forum
44. The parameters of the ammonia-vapour wastewater are not up to standard - HCBBS Forum
45. What is the role of HAZOP analysis in the process design process? - HCBBS Forum
46. Useful info: A comprehensive analysis of various waste gas treatment technologies in a very long PPT – save it now if you need it! - HCBBS Forum
47. 【Daily Question】 【AC Version for Static Equipment...Question 58】 February 27, 2019 Match the items...Everything is going well - HCBBS Forum
48. When steam and water are heated directly or through a steam-water mixer, noise and vibration are quite high. Is there any way to address this? - HCBBS Forum
49. Process issues and precautions regarding molten salt heating furnaces - HCBBS Forum
50. Is it necessary to perform a hydrogen leak test before the device is put into operation for the first time? - HCBBS Forum
51. Seeking guidance - HCBBS Forum
52. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190301 - HCBBS Forum
53. Overall explosion protection issue of the equipment - HCBBS Forum
54. Welding defects - HCBBS Forum
55. 【Daily Question】【AC Version for Static Equipment...Question 63】March 4, 2019 – True/False Multiple Choice Question...Everything is going well - HCBBS Forum
56. What type of pump is suitable for pumping ion exchange resin, so as not to damage the resin? - HCBBS Forum
57. The pH is around 1; the main components are sulfuric acid, sodium sulfate, and salicylic acid. The temperature is around 40°C – can 304 material be used? - HCBBS Forum
58. 1 - HCBBS Forum
59. [Daily Question] [Static Equipment Exchange Edition...Question 113] Adapted multiple choice question on April 23, 2019...all the best - HCBBS Forum
60. Saturated vapor pressure and atmospheric pressure - HCBBS Forum
61. I would like to ask the experts: when are the auxiliary materials used for heat retention and insulation (round steel, angle steel, support rings) applied? ... - HCBBS Forum
62. The container has water in it - HCBBS Forum
63. Hydraulic test - HCBBS Forum
64. 【Daily Question】 【AC Version for Static Equipment...Question 110】 April 20, 2019 – Revised multiple-choice questions...Everything is going well - HCBBS Forum
65. Powder conveying - HCBBS Forum
66. Does electrodialysis need to operate under pressure? ? ? Are there any process flow diagrams for electrodialysis? - HCBBS Forum
67. [Daily Question] Basic Process Knowledge (Fill-in-the-blank) 20190214 - HCBBS Forum
68. What is the minimum net positive suction head that a centrifugal pump must have? - HCBBS Forum
69. Seeking assistance in determining the fire hazard classification for workshops with explosive dusts - HCBBS Forum
70. May I ask whether materials such as Q235B can be used in highly or moderately toxic media? Which standards address this aspect? - HCBBS Forum
71. Why is insulation needed here? ? ? - HCBBS Forum
72. 2,6-dimethyl-4-heptanone and 4,6-dimethyl-2-heptanone - HCBBS Forum
73. Where is the best location to install the ultrafiltration membrane in a reverse osmosis pure water system? - HCBBS Forum
74. Is there a standard for the thickness of pipe joints? - HCBBS Forum
75. Does the production of polyphenylene sulfide fall under polymerization processes? - HCBBS Forum
76. What are the intelligent office management systems used by engineering company design institutes? - HCBBS Forum
77. How can a mixed solution of sodium sulfate and sodium chloride be used to completely separate the two salts? - HCBBS Forum
78. Is a bypass pipe necessary for heat exchangers? - HCBBS Forum
79. Has anyone ever tried nitration? - HCBBS Forum
80. What is the by-product of this reaction? - HCBBS Forum
81. If you roughly know the flow rate of a gas or liquid, how can you estimate the pipe diameter? Is there a difference between gases and liquids? - HCBBS Forum
82. How to use Aspen to simulate solid-liquid phase reactions - HCBBS Forum
83. Feed inlet location - HCBBS Forum
84. 【Daily Question】【AC Version for Static Equipment...Question 34】February 3, 2019 – True/False Multiple Choice...Thank you for voting - HCBBS Forum
85. May I ask what are some well-known manufacturers of evaporators? ? - HCBBS Forum
86. Complete Introduction to Valve Knowledge_-_(Chinese).ppt - HCBBS Forum
87. Chromium particles - HCBBS Forum
88. [Daily Question] Basic Process Knowledge (True/False) 20190325 - HCBBS Forum
89. Natural gas conversion to hydrogen - HCBBS Forum
90. Complete set of CAD design and construction drawings for pickling and phosphating wastewater treatment plant - HCBBS Forum
91. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190122 - HCBBS Forum
92. SAD Design Analysis Qualification - HCBBS Forum
93. Specification requirements for isolation valves on Class A and Class B storage tanks - HCBBS Forum
94. Calculation of material storage volume in process units - HCBBS Forum
95. Fundamentals of Manufacturing Processes (Multiple Choice) 20181216 - HCBBS Forum
96. Can a gas heating furnace guide the flue gases away using a fan to reduce the required safety distance? - HCBBS Forum
97. In the design of safety valves, regulations regarding the rupture of the heat exchanger tube bundle state that when the pressure on the low-pressure side is 2/3 lower than that on the high-pressure side, it should be considered as an emergency scenario - HCBBS Forum
98. Gas stations: Install a solid explosion-proof wall between the fuel filling area and the gas filling area! Can it be counted as two stations? - HCBBS Forum
99. For a pressure vessel originally designed to hold hydrogen at 10 MPa, is it feasible to modify it for use with nitrogen? Is approval required? - HCBBS Forum
100. Deionized water, deoxygenated water - HCBBS Forum