English — Forum #337 (Page 3/163)

1. What is the difference between the emergency relief valve and the safety valve of an atmospheric pressure vessel? - HCBBS Forum
2. Why does 68-70% sulfuric acid appear green? - HCBBS Forum
3. 【Ten Years of Rapid Development in Chemical Engineering Equipment】2300-2025: Saiding smokeless lump coal pressurized moving bed gasification technology (JM-S furnace) - HCBBS Forum
4. Issues related to Fenton treatment of electroplating wastewater - HCBBS Forum
5. Seeking help regarding components in LNG - HCBBS Forum
6. Flow rate issue - HCBBS Forum
7. [Daily Question] Basic Process Knowledge (Multiple Choice) 20190910 - HCBBS Forum
8. 【HVAC Version】Daily Question 20180601 - HCBBS Forum
9. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200218 - HCBBS Forum
10. Does anyone know the azeotropic boiling point of nitric acid aqueous solution mixture? - HCBBS Forum
11. One Question per Day ---------- Multiple-choice Questions on Basic Process Knowledge (September 14) - HCBBS Forum
12. The application of GreenSoft in epoxy soybean oil acrylate coatings - HCBBS Forum
13. Do metal materials volatilize at high temperatures? - HCBBS Forum
14. 【Frontiers in HaiChuan Chemical Technology】New strategy at Dalian Institute of Chemical Physics enables efficient synthesis of methanol from carbon dioxide via hydrogenation - HCBBS Forum
15. Which brand is generally used for explosion-proof flashlights in factories? - HCBBS Forum
16. Sodium fermetate - HCBBS Forum
17. 11.03 Daily Question – Multiple-choice; a reward is given for every correct answer - HCBBS Forum
18. Ion-exchange membrane caustic soda technology - HCBBS Forum
19. Help! ! ! What methods can be used to address bridging and arching phenomena during material transportation? - HCBBS Forum
20. Discussion on heat transfer in microchannels - HCBBS Forum
21. Regarding pneumatic valves and electromagnetic flowmeters used for hazardous media, are there any differences in process interfaces between WN-RF and PLRF? - HCBBS Forum
22. Unit conversion problems - HCBBS Forum
23. LPG vehicles have a large amount of residual liquid left after loading, which cannot be emptied - HCBBS Forum
24. [Mechanical Equipment Technology Edition] Daily Question 20171019: Protection Devices for Refrigeration Equipment - HCBBS Forum
25. Within what range can the flow rate and head of a centrifugal pump vary while keeping the current within acceptable limits? - HCBBS Forum
26. [Daily Question] Basic Process Knowledge (True/False) 2020.6.23 - HCBBS Forum
27. With the arrival of summer, how can one determine the thermal efficiency of heat exchangers? - HCBBS Forum
28. Production capacity planning and supply-demand pattern of the alicyclic diol 1,4-cyclohexanedimethanol (CHDM) - HCBBS Forum
29. Is a safety assessment required when establishing a factory in the food industry? - HCBBS Forum
30. 【 Daily Topic】【 Quality Version 20170117】 - HCBBS Forum
31. Code for Process Design of Petrochemical Plants - HCBBS Forum
32. Let’s analyze the manufacturing process together - HCBBS Forum
33. Problems with valve settings in steam pipelines - HCBBS Forum
34. 【Daily Topic】【Storage & Transportation Version 20170117】 - HCBBS Forum
35. 【HVAC Version】Daily Question 20180401 - HCBBS Forum
36. General layout safety distance - HCBBS Forum
37. [Civil Engineering Version] Daily Question 20180505 - HCBBS Forum
38. Daily Practice — Copying the “Stele of Lord Huangfu” - HCBBS Forum
39. When the turbine is shut down, the vacuum is broken - HCBBS Forum
40. Basic Process Knowledge (True/False Questions) 20171127 - HCBBS Forum
41. 【Ten Years of Rapid Development in Chemical Equipment】From 2015 to 2026, Yihua will build China’s first project that converts hydrogen sulfide waste gas generated in coal chemical processes into dimethyl sulfoxide, a product with high added value - HCBBS Forum
42. 【HVAC Version】Daily Question 20180103 - HCBBS Forum
43. Control scheme for the top temperature of the distillation tower and the liquid level in the reflux tank - HCBBS Forum
44. What is a photoinitiator, and what are its main processes and applications? - HCBBS Forum
45. Are PN10 nominal pressures still used for chemical industry metal pipes these days? - HCBBS Forum
46. 【Piping Valve Technical Edition – Daily Question on Common Piping Errors】20170806 - HCBBS Forum
47. Lithium phosphate - HCBBS Forum
48. Centrifuge vibration issue - HCBBS Forum
49. Looking for the user manual for the plate and frame filter press BYA40/1000-UK - HCBBS Forum
50. Should the power distribution for the sewage treatment plant be designed as a secondary load? ? What regulations specify it? - HCBBS Forum
51. In the PID diagram - HCBBS Forum
52. Which one has higher control precision, a pneumatic control valve or an electric control valve? ? - HCBBS Forum
53. One Question per Day----------True or False Questions on Basic Process Knowledge (January 11) - HCBBS Forum
54. Problems with extractive distillation of ethyl acetate - HCBBS Forum
55. Why does the exhaust from a chloromethane vaporizer appear green? - HCBBS Forum
56. 【Wisdom comes from hard work】05 Bookshelf - HCBBS Forum
57. Fundamentals of Processing Technology (Multiple Choice) 20171204 - HCBBS Forum
58. Basic Process Knowledge (Multiple Choice) 20180707 - HCBBS Forum
59. The distillation separation problem of ethanol-water-chlorobenzene - HCBBS Forum
60. Seven stages of chemical engineering technology from concept to industrialization (Issue 67/100) – Special sections on fire protection, environmental protection, and occupational health - HCBBS Forum
61. In China, apart from Sinopec’s Qiange Oil Refining Plant and the device for producing **furan from furfural, what other facilities exist? - HCBBS Forum
62. Breather valve and safety valve on atmospheric pressure tanks - HCBBS Forum
63. Regarding PID flowcharts - HCBBS Forum
64. Reflections on whether a certain material is prone to dust explosions - HCBBS Forum
65. Removal of rust from precision workpieces and dissolution of metal surface oxidation - HCBBS Forum
66. Seek a template for technical improvement plans - HCBBS Forum
67. Old K says every week – talking about things in the petrochemical design industry. Post 47: Energy conservation and emission reduction require reducing waste and optimizing society... - HCBBS Forum
68. A question for a beginner - HCBBS Forum
69. 【Frontiers in HaiChuan Chemical Technology】Dalian Institute of Chemical Physics develops highly robust reconfigurable cellulose photonic hydrogels - HCBBS Forum
70. New progress achieved in Jiangsu’s project to produce green methanol from bio-based carbon dioxide - HCBBS Forum
71. Law of conservation of energy - HCBBS Forum
72. Basic Process Knowledge (Multiple Choice) 20171224 - HCBBS Forum
73. Dimension specifications for steel reactors and storage tanks under 50m3 - HCBBS Forum
74. Electrical fire monitoring system design diagram - HCBBS Forum
75. 【Frontiers in HaiChuan Chemical Technology】Nanda Development’s technology for the value-added recycling of waste concrete through immersion in calcium hydroxide solution has won an award - HCBBS Forum
76. Is it economical and reasonable to use seawater for heat exchange with the closed-loop water system in chemical enterprises located by the sea? - HCBBS Forum
77. Regular inspection of pressure pipelines within the installed device after delivery - HCBBS Forum
78. What is the fire hazard classification of urea? - HCBBS Forum
79. Understanding PSA purification technology in one article - HCBBS Forum
80. Regarding the control of oil flow rate into the tank - HCBBS Forum
81. I would like to ask: what problems might arise if a refrigerant at -25°C is used to cool hot water to room temperature? Will the cooler freeze over? - HCBBS Forum
82. 10.31--bak version daily topics - HCBBS Forum
83. Fundamentals of Manufacturing Processes (True/False Questions) 20171123 - HCBBS Forum
84. Cooling of gas during washing - HCBBS Forum
85. Could you advise me on what size of columns to choose based on the load magnitude? Choose the appropriate size based on the load... - HCBBS Forum
86. How is the discharge capacity of the safety valve in the synthetic methanol process determined? - HCBBS Forum
87. [Weekly Image] Catalytic Coking Reformate Blending Version (Third Image of April 2017) - HCBBS Forum
88. Hydrochloric acid storage tank design - HCBBS Forum
89. What is the role of the starting fuel gas in the vacuum system of vacuum distillation? - HCBBS Forum
90. In MTO product gas, what causes an increase in medium-aldehyde compounds, and how should it be adjusted? - HCBBS Forum
91. Insulation issue of the inner head in the skirt of insulation equipment - HCBBS Forum
92. Hydroxypropyl distarch phosphate - HCBBS Forum
93. How to calculate the wetted area of a heat exchanger under fire conditions - HCBBS Forum
94. Requirements for the dikes surrounding acid and alkali tank areas - HCBBS Forum
95. The project for producing aviation kerosene from carbon dioxide via hydrogenation, developed jointly by Beiyuan Group and Xi’an University, has completed laboratory trials and is now in the pilot production phase - HCBBS Forum
96. Demand for methane chloride process - HCBBS Forum
97. Why does subcooled liquid hardly suffer from cavitation when pumped? - HCBBS Forum
98. What does a 10-ton boiler mean in the context of waste heat utilization? - HCBBS Forum
99. Hello everyone, I would like to ask whether a dichloromethane storage tank requires a nitrogen blanket - HCBBS Forum
100. Sulfur recovery technology - HCBBS Forum