English — Forum #337 (Page 6/163)

1. What kind of pump is suitable for adding alkali (as crystallization may occur)? - HCBBS Forum
2. Is it necessary to use a metal gasket between the nut of high-voltage equipment and the equipment itself? - HCBBS Forum
3. Old K says every week – talking about things in the petrochemical design industry. Post 27: Fitting numbers - HCBBS Forum
4. Project collaboration - HCBBS Forum
5. 【Daily Topic】【HVAC Version 20170614】 - HCBBS Forum
6. Is the pressure drop significant for variable diameters? - HCBBS Forum
7. For gas-fired heat transfer oil boilers, is it necessary to install a flame arrester on the natural gas pipeline feeding the boiler? - HCBBS Forum
8. In SW's ethylene process, how are nitrogen oxides in the hydrogen tank formed? - HCBBS Forum
9. Let’s talk about how to carry out engineering design – [Video] A series on why engineering design drawings aren’t that easy to draw! Issue 1 - HCBBS Forum
10. Coal chemical synthesis gas low-temperature methanol washing process package - HCBBS Forum
11. The alkylsulfur content continues to not decrease - HCBBS Forum
12. Problems encountered in ammonia nitrogen testing - HCBBS Forum
13. Experience Sharing in Chemical Process and Control - HCBBS Forum
14. Seeking help with the ternary precursor process - HCBBS Forum
15. Regarding the ice machine oil pump bypass problem - HCBBS Forum
16. Consultation regarding steam loss issues - HCBBS Forum
17. Plug valve - HCBBS Forum
18. 10%~20% of the methanol mother liquor is used to recover methanol, which is then distilled to 99% purity - HCBBS Forum
19. Location of polymerization inhibitor addition in the styrene distillation system - HCBBS Forum
20. Problems with the pressure gauge - HCBBS Forum
21. How to determine the fire hazard of ethylene glycol aqueous solutions? ? - HCBBS Forum
22. How should the foundation for a plastic storage tank be constructed? How to prevent storage tanks from shifting or being affected by wind, etc.? - HCBBS Forum
23. 【 Daily Topic】【 Quality Version 20170102】 - HCBBS Forum
24. 【Daily Question】 【AC Version for Static Equipment...Question 31】 January 31, 2019 – True/False Question...Good snow predicts a good harvest - HCBBS Forum
25. Regarding the set pressure of the safety valve - HCBBS Forum
26. Under what circumstances can it lead to a decrease in temperature in the side-line product collection tank and an increase in temperature at the top of the tower? - HCBBS Forum
27. If there are 5 tons of methanol in the pores of the packing in a packed tower, and it is purged with saturated steam at 0.3 MPa, with a safety valve installed on the steam pipeline, then: - HCBBS Forum
28. Is it necessary to install cofferdams around the reactors in petrochemical plants? Under what circumstances should cofferdams, fire dikes, etc. be installed? - HCBBS Forum
29. Hydraulic radius of circular pipes - HCBBS Forum
30. Design issues for the nitration reaction, a high-risk process - HCBBS Forum
31. How much power is generated - HCBBS Forum
32. Does the chlor-alkali industry produce sodium hypochlorite? Sodium hydroxide must be at the anode; then what is at the cathode?... - HCBBS Forum
33. On the drying and packaging of antioxidant 1035 - HCBBS Forum
34. What is the maximum actual operating temperature that FRPP pipes can reach over a long period of time? - HCBBS Forum
35. Issues with mouse barriers in the active pharmaceutical ingredient workshop - HCBBS Forum
36. Regarding the issue of fire separation distances - HCBBS Forum
37. Special gas station/factory operations - HCBBS Forum
38. Let’s have an article about the achievements of a technical expert - HCBBS Forum
39. What factors affect the pressure drop of heat exchangers? - HCBBS Forum
40. 350CMH, 50Pa, what type of fan should be used? ! - HCBBS Forum
41. 【JST-073】Air separation installation---One-on-one discussion office for air separation technology experts - HCBBS Forum
42. I would like to ask why hydrogen needs to go through methanation first? ? ? ? ? ? ? ? ? ? - HCBBS Forum
43. 【Frontiers of HaiChuan Chemical Technology】Chinese Academy of Sciences develops AI agents in the field of materials science - HCBBS Forum
44. 【Frontiers of HaiChuan Technology】Dalian Institute of Chemical Physics’ “New Technology for Producing 1,2-Dichloroethane from Ethylene Glycol” Passes Scientific and Technological Achievement Evaluation - HCBBS Forum
45. Liquefied natural gas loading crane in Hebi - HCBBS Forum
46. Hydrochloric acid deep-lysis boiling breaker - HCBBS Forum
47. The temperature difference of the heat source for this heat exchanger is small (it drops from 120°C to around 100°C, which is less than 100°C); therefore, this heat exchanger can only make use of steam’s… - HCBBS Forum
48. Should there be one or two safety valves? - HCBBS Forum
49. OCC catalytic cracking to produce olefins - HCBBS Forum
50. Post on the distribution of wealth rewards for Process Area in July 2020 - HCBBS Forum
51. I’d like to hear everyone’s suggestions for improvement - HCBBS Forum
52. Long-distance pipeline - HCBBS Forum
53. Regarding the extruded branch pipe - HCBBS Forum
54. How to calculate the instrument air and nitrogen sealing volume? - HCBBS Forum
55. 【Ten Years of Rapid Development in Chemical Processing Equipment】2360–2025: First domestic epoxy resin certificate for membrane-type LNG carriers issued - HCBBS Forum
56. Determination of fire compartments - HCBBS Forum
57. Who produces DBP using non-acidic catalysts? - HCBBS Forum
58. Is this 45 degree angle pointing upwards? - HCBBS Forum
59. Is it necessary to install a minimum flow valve on the recirculation pipe at the outlet of the feed water pump? - HCBBS Forum
60. Elliptical heads are joined together; what is the minimum width for such joints? - HCBBS Forum
61. Vapor pressure at boiling point - HCBBS Forum
62. 8.24-Answer questions daily to win rewards and gain knowledge (Pharmaceutical Engineering Technology Edition) - HCBBS Forum
63. 【Daily Topic】【Engineering Version 20170118】 - HCBBS Forum
64. Check valve behind the nitrogen-sealed self-regulating valve - HCBBS Forum
65. Searching for pilot plant process design companies - HCBBS Forum
66. 【HVAC Version】Daily Question 20180503 - HCBBS Forum
67. Describe the complexed iron desulfurization technology - HCBBS Forum
68. Take a look at what process this is (answer: MTP) - HCBBS Forum
69. According to clause 5.2.17 of the petrochemical regulations, the plant control room can be located within the plant; does the plant include the manufacturing building? - HCBBS Forum
70. Xiaobai asks for advice - HCBBS Forum
71. The possibility of superheated methanol vapor carrying water in the stripping tower - HCBBS Forum
72. Blowout discs for electronic gas circuits - HCBBS Forum
73. Carbon dioxide content at the outlet of the air purification unit for air separation, as well as the acetylene and hydrocarbon contents in the main condensation evaporator. - HCBBS Forum
74. Regarding the liquid nitrogen outlet pipeline - HCBBS Forum
75. Experts in CAD for process flow diagrams needed - HCBBS Forum
76. Regarding French fire protection standards and GB50016, can we choose either one? When checking the fire protection facilities in this factory building, we found many issues that do not comply with the \"GB50016 Code for Fire Protection Design of Buildings\". The design team said it belongs to the installation industry, and factories like ours are related to nuclear power - HCBBS Forum
77. Installation direction of Y-type filter - HCBBS Forum
78. Class C factories are arranged in groups - HCBBS Forum
79. Fundamentals of Manufacturing Processes (Multiple Choice) 20171210 - HCBBS Forum
80. May I ask, does it mean that for steel-lined plastic pipes, one can first install the carbon steel pipe and then insert a layer of plastic pipe inside it? - HCBBS Forum
81. Is insulation only required for the inlet pipeline of reciprocating compressors? Isn’t a centrifugal one needed? - HCBBS Forum
82. How can one determine whether condensation can occur when using condensate water for cooling at 42? - HCBBS Forum
83. Regarding the treatment of methamine wastewater, since methamine is classified as Category A, does that mean the entire factory building also has to be classified as Category A? - HCBBS Forum
84. Evaporator operating liquid level height - HCBBS Forum
85. Schematic design diagram of the condenser and vacuum system for solvent concentration and recovery - HCBBS Forum
86. What do dry weight and operating weight in a chemical injection skid mean? - HCBBS Forum
87. What is the difference between panel-mounted instruments, instruments installed behind a panel, and rack-mounted instruments? ? - HCBBS Forum
88. Ethylene compression, alkali washing, oxidation of waste alkali - HCBBS Forum
89. 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
90. Temperature-entropy diagram thought - HCBBS Forum
91. Do hazardous waste items fall under the category of hazardous chemicals in the \"Catalogue of Hazardous Chemicals\" (2015 edition)? - HCBBS Forum
92. Seek Sinopec documents - HCBBS Forum
93. Can a safety valve on a pressure vessel be installed on a short pipe connected to the vessel? - HCBBS Forum
94. How to design steam condensation - HCBBS Forum
95. 【Ten Years of Rapid Development in Chemical Equipment】2258–2025: Innovations in next-generation anthraquinone carrier technologies enable doubling of production capacity in hydrogen peroxide manufacturing - HCBBS Forum
96. Platform countertop style - HCBBS Forum
97. Dear netizens, which chemical processes that are under strict supervision are included in the chemical reaction equations below? - HCBBS Forum
98. Someone with extensive experience – please use your knowledge to guess: the location is that of a remote pressure transmitter - HCBBS Forum
99. 【HVAC Version】Daily Question 20180117 - HCBBS Forum
100. 【JST-046】Condensing steam turbine operation expert one-to-one help office - HCBBS Forum