English — Forum #337 (Page 36/163)

1. What is the difference between a technical specification sheet and a data sheet? - HCBBS Forum
2. Selection of heating methods for small crude oil tanks - HCBBS Forum
3. Can a breather valve also function as an emergency release valve? - HCBBS Forum
4. In order to calculate the bursting disc selection for a section of high-pressure pipeline, it is necessary to check the critical temperature and critical pressure of the polymer medium. - HCBBS Forum
5. Distance of Class C warehouse from the factory boundary wall - HCBBS Forum
6. High-power cables are equipped with circulating water; how is the amount of water required calculated? - HCBBS Forum
7. Reactor motor current - HCBBS Forum
8. Are there any minimum and maximum requirements for the height of the equipment brackets (their position above and below the equipment)? - HCBBS Forum
9. Why does the backwashing of the recirculating water side filter cause the other 2 units to operate as well? - HCBBS Forum
10. Process flow diagram DY - HCBBS Forum
11. Is there such a thing in the industry as a simplified process package, that is, a reduced-scope Process Design Package? - HCBBS Forum
12. On the selection of desulfurization processes for the graphitization industry, carbon industry, and power plant industry - HCBBS Forum
13. Is it possible to separate water, propionaldehyde, and isobutyraldehyde? - HCBBS Forum
14. Water pump head calculation - HCBBS Forum
15. On the heat of solution of sodium hydroxide in water - HCBBS Forum
16. May I ask whether it is the piping department responsible for installing the pressure guide tubes of instruments, such as those of pressure transmitters, or is it the instrument control team that handles this task? - HCBBS Forum
17. Could the senior colleagues please explain the meaning of some of the legends in Figure 8, \"Pipeline Layout Examples\", of HG/T 20519-2009? - HCBBS Forum
18. At room temperature, what is the solubility of nitrogen dioxide and its Henry’s law constant? - HCBBS Forum
19. How to convert 3MPA, -4℃ liquid ammonia to 0MPa, -33℃ with a liquid ammonia flow rate of 55t/h - HCBBS Forum
20. Utilization of steam condensate - HCBBS Forum
21. thiopropionic acid - HCBBS Forum
22. RULES OF THUMB FOR CHEMICAL ENGINEERS - HCBBS Forum
23. Does a flame arrester need to have an explosion protection rating, such as the rating BS 5501?； IIA, IIB, IIC. - HCBBS Forum
24. PID tuning - HCBBS Forum
25. In the torch diagram, which one is the eternal flame and what is the other? - HCBBS Forum
26. Inclined tube settler - HCBBS Forum
27. Flow diagram of high-pressure two-stage full-circulation hydrocracking reaction system - HCBBS Forum
28. Please ask an expert in thermal conduction furnaces to help answer this, thank you - HCBBS Forum
29. What should be the purge flow rate for steam pipelines? - HCBBS Forum
30. Natural gas chemical industry value chain - HCBBS Forum
31. When using a nitrogen-purged storage tank for the first time, is it necessary to fill it with nitrogen before charging materials? How long will the replacement be needed? Are there any regulations? - HCBBS Forum
32. What impact does the feed position in a distillation tower have on distillation? - HCBBS Forum
33. Aspen heat exchanger calculations - HCBBS Forum
34. Big news! 2nd Petrochemical Industry Industrial Internet Conference – Report Collection - HCBBS Forum
35. “Let’s learn the standards together” — Petrochemical Standard 2.0.21 - HCBBS Forum
36. Seeking manufacturers of catalysts for furan hydrogenation to produce **furan. - HCBBS Forum
37. Flowchart review - HCBBS Forum
38. How is the gas flow rate calculated during pipeline purging? - HCBBS Forum
39. Issues related to coiled tube heat exchangers - HCBBS Forum
40. How to address the deliquescence issue with solid feedstocks - HCBBS Forum
41. Regarding the hydrostatic pressure of the liquid column in the reactor vessel - HCBBS Forum
42. Handbook for the Design and Selection of Petrochemical Equipment: Heat Exchangers - HCBBS Forum
43. Why can’t methyltrimethoxysilane be found in Aspen? - HCBBS Forum
44. Regarding the location of chemical industrial parks and residential areas - HCBBS Forum
45. Regarding analysis and testing - HCBBS Forum
46. What is the purpose of the instrument air pipeline connected to the motor of the hydrogen compressor? - HCBBS Forum
47. How to draw a tuning fork level switch in a PID diagram? - HCBBS Forum
48. Is there any distance requirement specified in the 2018 version of the Petrochemical Regulations regarding the distance between accident ponds and open-flame areas? - HCBBS Forum
49. Liquid ammonia storage tanks require 2 sets of level gauges – how should one make a choice? - HCBBS Forum
50. Is it necessary to provide heat tracing and insulation for a 60% methanol solution in outdoor environments in the north? - HCBBS Forum
51. Comparison of different steam heater processes in chemical plants - HCBBS Forum
52. Is the RO product water acidic, while the concentrated water is alkaline? - HCBBS Forum
53. Which one has higher requirements: demineralized water, pure water, process water, or cleaning circulating water? - HCBBS Forum
54. Let's take a look at whether there are any problems with the processing technology of steel-lined graphite towers? - HCBBS Forum
55. Classification principles for plugging leaks under pressure - HCBBS Forum
56. Unloading of acidic and alkaline liquids - HCBBS Forum
57. I hope the expert can help calculate the heat exchange efficiency - HCBBS Forum
58. PROCESS CONTROL_ MODELING, DESIGN AND SIMULATION - B. WAYNE BEQUETTE - HCBBS Forum
59. What is the difference between under-tank loading and splash loading? - HCBBS Forum
60. Summary of Chemical Process Standards [Chemical Process and Production Standards and Specifications] List (no attachments) - HCBBS Forum
61. May I ask if silicone oil can be used in pressure gauges for Class A explosion-proof areas? - HCBBS Forum
62. Free enthalpy and entropy table query software - HCBBS Forum
63. Exchange on methods for removing heavy metals from water bodies - HCBBS Forum
64. Comprehensive treatment (incineration) of three types of waste from newly built factories. - HCBBS Forum
65. Elbow bending radius - HCBBS Forum
66. Specializing in refined oil production and chemical processing: Daqing Refining & Chemical’s integrated approach highlights its advantages - HCBBS Forum
67. Do tank trucks have measures to prevent negative pressure? - HCBBS Forum
68. Torch pipeline main - HCBBS Forum
69. Seeking to purchase or partner with a Class B design institute with relevant qualifications - HCBBS Forum
70. Work started in February – how are things going for everyone else? - HCBBS Forum
71. Phosphorus trichloride, phosphorus oxytrichloride, phosphorus pentachloride process packages - HCBBS Forum
72. The nominal pressure requirement for pipeline components used for flammable and toxic media must be greater than or equal to PN16. Is there such a regulation? - HCBBS Forum
73. A typical example of principle-based innovation: An overview of innovation cases in liquid ring vacuum pumps - HCBBS Forum
74. Signing ceremony held for Huitong Shares’ project to produce 350,000 tons of polylactic acid per year, with a total investment of 8.6 billion yuan - HCBBS Forum
75. Who has DMAC (dimethylacetamide) technology? - HCBBS Forum
76. The sequence for turning off the burner and extinguisher nozzles in the heating furnace is different from normal operation - HCBBS Forum
77. How to purge the pressure guiding tube of an oxygen pipeline flow meter? - HCBBS Forum
78. Seek a solution - HCBBS Forum
79. Which one is more resistant to chloride ions: cast iron, carbon steel, or stainless steel? - HCBBS Forum
80. Corrosion issues with mixed acids - HCBBS Forum
81. Hello everyone, is the fire hazard associated with ammonia evaporators (with an ammonia concentration of 20%) classified as Class V or Class B? - HCBBS Forum
82. Phthalic anhydride off-gases from adjacent processes—catalytic incinerator - HCBBS Forum
83. Electrochemical devices replacing traditional chemicals - HCBBS Forum
84. Polypropylene molecular chain scission problem - HCBBS Forum
85. Hello everyone, I would like to ask whether the pressure rating of ammonia pipelines must be 25 kilograms or higher - HCBBS Forum
86. Six key features of energy savings in steam systems - HCBBS Forum
87. Identification of welding joint coefficient - HCBBS Forum
88. Anticorrosion - HCBBS Forum
89. Steam pipeline purging plan - HCBBS Forum
90. In which products or industries can hydrogen sulfide gas be used? - HCBBS Forum
91. Regeneration of the alkali scrubber tower - HCBBS Forum
92. Cyclohexylamine technology transfer and related technical services - HCBBS Forum
93. What causes the water in the drum boiler of the acidic gas incinerator to turn red? ? - HCBBS Forum
94. Nozzle name - HCBBS Forum
95. Decarburization of Q235 at high temperatures? - HCBBS Forum
96. Flow diagram of catalytic cracking energy recovery system - HCBBS Forum
97. Can a RO roll-type membrane used in water treatment only allow water to enter from the side, with pure water exiting from the center and concentrated water exiting from the other side? - HCBBS Forum
98. Service life of lightning rods - HCBBS Forum
99. Knowledge sharing on moving bed vaporizers - HCBBS Forum
100. How should the stability of the mixed exhaust gases be ensured? - HCBBS Forum