English — Forum #336 (Page 30/51)

1. 【Daily Question】Theoretical Foundation 2020.06.15 - HCBBS Forum
2. 【Daily Question】Theoretical Foundation 2020.12.17 - HCBBS Forum
3. Drain pipe on the storage tank - HCBBS Forum
4. Can reaction engineering textbooks assume a “multiphase” scenario by default? - HCBBS Forum
5. How can I inquire about the inspection certificate for flange forgings? - HCBBS Forum
6. Introduction to manufacturers of biological deodorization equipment - HCBBS Forum
7. How much heat is released when 1 kg of HCl is dissolved in water? - HCBBS Forum
8. 【Daily Question】Theoretical Foundation 2020.12.11 - HCBBS Forum
9. Removal of linear moieties from silicone rings - HCBBS Forum
10. Can equipment in a chemical plant pass through the floor of a fire compartment? - HCBBS Forum
11. 【Daily Question】Theoretical Foundation 2020.07.09 - HCBBS Forum
12. How to select power based on material viscosity - HCBBS Forum
13. Expansion tank issues - HCBBS Forum
14. What is the abbreviation for HMB? Mass balance? - HCBBS Forum
15. If it is not a hazardous chemical, does that mean there is no need to consider fire hazards? - HCBBS Forum
16. Heilongjiang Province is conducting thorough inspections of safety hazards related to hazardous chemicals – what are the “six measures”? - HCBBS Forum
17. Selection of water pump pipe diameter - HCBBS Forum
18. Method for determining the setting pressure of safety valves in pressure vessels - HCBBS Forum
19. Material allowance for pipeline design - HCBBS Forum
20. 【Daily Question】Theoretical Foundation 2020.07.08 - HCBBS Forum
21. The pH values of the calcium chloride and sodium tetraborate solutions actually turned acidic - HCBBS Forum
22. Iron ions in pyrazole - HCBBS Forum
23. Must propylene oxide pipelines use stainless steel bolts? - HCBBS Forum
24. What material should be used for pipes to transport sodium aluminate solution? - HCBBS Forum
25. Understanding of the pinch point problem - HCBBS Forum
26. Application for the export permit for hazardous goods of Category 3 and required documents - HCBBS Forum
27. Will the water formed by the condensation of steam inside the heat exchange tubes obstruct the flow of steam? - HCBBS Forum
28. 【Daily Question】Theoretical Foundation 2021.1.14 - HCBBS Forum
29. Aluminum pipes are used for pipelines carrying 97% concentrated nitric acid. What standards should be followed for selecting the pipe diameter, flanges, and gaskets? - HCBBS Forum
30. Are lubricant formulating companies considered hazardous chemical enterprises? - HCBBS Forum
31. How dangerous is the chemical industry? - HCBBS Forum
32. I have a question for everyone: the smaller the heat state parameter q of the distillation column feed, does it mean that more theoretical plates are required in the stripping section? - HCBBS Forum
33. Main components of a centrifuge - HCBBS Forum
34. I have a middle school-level question - HCBBS Forum
35. 【Daily Question】Theoretical Foundation 2020.11.19 - HCBBS Forum
36. 【Daily Question】Theoretical Foundation 2020.08.21 - HCBBS Forum
37. Sinopec Refining and Chemical Engineering Construction Standards “Specifications for Process Design of Fuel Systems + SDEP-SPT-PE2008” - HCBBS Forum
38. 【Daily Question】Theoretical Foundation 2021.03.04 - HCBBS Forum
39. Why is a connection needed between the end of the main inlet pipe for the chilled water circulation and the main return pipe? - HCBBS Forum
40. Fixed-bed design: What should be the ratio of catalyst particle size? ? - HCBBS Forum
41. [Daily Question] Theoretical Basis 2021.1.22 - HCBBS Forum
42. Concentration calculation - HCBBS Forum
43. 【Daily Question】Theoretical Foundation 2021.1.24 - HCBBS Forum
44. Decomposition of 2-nitrobutane or other reaction principles - HCBBS Forum
45. 【Daily Question】Theoretical Foundation 2020.10.18 - HCBBS Forum
46. 【Daily Question】Theoretical Foundation 2021.03.24 - HCBBS Forum
47. When hazardous waste aluminum ash reacts with moisture in the air to produce a small amount of ammonia, is it necessary to use a toxic gas detector? - HCBBS Forum
48. Regarding the identification of combined devices - HCBBS Forum
49. 【Daily Question】Theoretical Foundation 2020.07.14 - HCBBS Forum
50. How to maintain the effectiveness of fan filters - HCBBS Forum
51. Storage tank, Category D and E, liquid caustic soda - HCBBS Forum
52. How to calculate the economic feasibility analysis for the warehouse - HCBBS Forum
53. Do fluorinated carbon steel pipes fall under the category of industrial metal pipes – pressure pipes? - HCBBS Forum
54. Deaerator dissolved oxygen - HCBBS Forum
55. Advanced sulfuric acid processing technology - HCBBS Forum
56. 【Daily Question】Theoretical Foundation 2020.06.01 - HCBBS Forum
57. 【Daily Question】Theoretical Foundation 2021.1.21 - HCBBS Forum
58. Should dichloromethane detection be carried out as part of toxic gas detection or flammable gas detection? - HCBBS Forum
59. The condenser or heat exchanger requires a negative pressure; how should a centrifugal fan or water ring vacuum pump be selected? - HCBBS Forum
60. What type should be used for spraying fire-resistant coatings on steel structures in the coal chemical industry? - HCBBS Forum
61. PV elite software issues - HCBBS Forum
62. At temperatures above 900°C, is water still in a molecular state? - HCBBS Forum
63. How can hazardous materials warehouses prevent fires? This article will tell you - HCBBS Forum
64. Liquefied gas supply station calculation and selection table - HCBBS Forum
65. Plugin installation - HCBBS Forum
66. Aspen simulates CO2 absorption - HCBBS Forum
67. What are the dangers of hydrochloric acid? What should be noted when transporting hydrochloric acid? - HCBBS Forum
68. Is it necessary to install a gas holder? - HCBBS Forum
69. Take a look at the supplementary questions next to a few questions - HCBBS Forum
70. Pipe shaft, vertical pipe, main pipe, branch pipe - HCBBS Forum
71. Are there anyone who has designed pressure vessels according to Russian standards? - HCBBS Forum
72. 【Daily Question】Theoretical Foundation 2020.05.30 - HCBBS Forum
73. 【Daily Question】Theoretical Foundation 2021.1.29 - HCBBS Forum
74. Pressure difference before and after the flame arrester - HCBBS Forum
75. Long-term/short-term temperature resistance of metal materials - HCBBS Forum
76. Can methanol entrained in carbon dioxide gas be separated using membranes? - HCBBS Forum
77. Old K says every week – talking about things in the petrochemical design industry; Post 3: The development of drafting techniques in design firms - HCBBS Forum
78. Eliminating air locking in centrifugal pumps through cold material recirculation - HCBBS Forum
79. For PN40 pipes, should an RF (convex) seal face be used instead of an FF (full-flat) seal face? - HCBBS Forum
80. Low-temperature desulfurization, with sulfuric acid as a by-product - HCBBS Forum
81. 【Daily Question】Theoretical Foundation 2020.07.02 - HCBBS Forum
82. Urgently seeking a process flow diagram for the sulfur melting section in sulfuric acid production with control points - HCBBS Forum
83. 【Daily Question】Theoretical Foundation 2021.1.23 - HCBBS Forum
84. Conversion of viscosity units - HCBBS Forum
85. pid problem - HCBBS Forum
86. Selection of liquid chlorine medium materials - HCBBS Forum
87. 【Daily Question】Theoretical Foundation 2020.08.19 - HCBBS Forum
88. What is the maximum temperature that 14Gr1MoR can withstand at 450°C? - HCBBS Forum
89. Flange form selection - HCBBS Forum
90. 【Daily Question】Theoretical Foundation 2020.04.29 - HCBBS Forum
91. 【Daily Question】Theoretical Foundation 2020.08.11 - HCBBS Forum
92. Treatment of ultra-pure water - HCBBS Forum
93. Design Manual for the Purification and Production of Coke Oven Gas - HCBBS Forum
94. Chemical Metallurgy and Materials – why are these three specialties grouped together? - HCBBS Forum
95. Is trace heating required for the breather valve on the sulfolane storage tank? - HCBBS Forum
96. 【Daily Question】Theoretical Foundation 2021.03.01 - HCBBS Forum
97. Composition of a fully automatic centrifuge - HCBBS Forum
98. Science Popularization | How to distinguish between hazardous chemicals and dangerous goods? You’ll understand after reading it! - HCBBS Forum
99. Given a value, the valve closes completely when the cumulative value is reached and stays fully open otherwise – what type of control is this? - HCBBS Forum
100. 【Daily Question】Theoretical Foundation 2020.05.18 - HCBBS Forum