English — Forum #337 (Page 37/163)

1. Questions regarding the design of the gasoline tank vent pipeline at gas stations? - HCBBS Forum
2. The bottom label is white after opening CAD2014 - HCBBS Forum
3. I recommend a useful software - HCBBS Forum
4. Who has data on the throttling expansion coefficient (Joule-Thomson coefficient) of hydrogen? Could you provide it? Thank you - HCBBS Forum
5. Applications of ceramic membranes in the preparation of nanocatalysts and nanopowders - HCBBS Forum
6. May I ask whether it is in compliance with the regulations to pump Class A and B flammable liquids, stored in 200 kg barrels, into the storage tanks in the workshop? - HCBBS Forum
7. Fluorobenzene plant - HCBBS Forum
8. May I ask whether the number of stages of water spray absorption required for exhaust gas is related to the solubility of the components in the exhaust gas? How to determine how many levels of spraying are needed? - HCBBS Forum
9. High-pressure shift process for coal water slurry - HCBBS Forum
10. Discussion on Installation and Construction Issues of Low-temperature Gate Valves in Olefin Projects - HCBBS Forum
11. I would like to ask: Since height A in bracket G1 of standard HG21692 is not specified, can this height take any value? Is there a maximum height limit? - HCBBS Forum
12. Newcomer - HCBBS Forum
13. Changes in steam temperature after pressure reduction - HCBBS Forum
14. I would like to ask fellow sailors: why is it required that the angle of the air legs not exceed 45 degrees or 30 degrees? - HCBBS Forum
15. How is a medium with minor hazard (Category IV) defined? - HCBBS Forum
16. Q&A on Catalytic Cracking Technology - HCBBS Forum
17. The orientation issue of the medium inside the tower - HCBBS Forum
18. Selection of flow restriction orifice plates - HCBBS Forum
19. May I ask whether carbon steel and plastic can be used for outdoor pipes and valves in areas with temperatures of minus 20 degrees Celsius? - HCBBS Forum
20. The importance of engineering design work - HCBBS Forum
21. May I ask whether the hazardous solid waste sludge generated by the filter press can be stored in the filter press room? - HCBBS Forum
22. The ultrafiltration operation cycle is short; the system gets clogged too quickly. What could be the reason? Please help, experts – give some advice - HCBBS Forum
23. The flow rate of compressed air is 10-15 m/s. Is there a relationship between the pipe size and the flow rate? - HCBBS Forum
24. Seeking advice on the use of chemical tea plants - HCBBS Forum
25. Comparison of heating methods - HCBBS Forum
26. Thank you very much - HCBBS Forum
27. Those who have been involved in the construction of large-scale installations, please share your insights - HCBBS Forum
28. How can a SOLIDWORKS 2020 model be converted into a CAD 3D drawing? What are the model formats that can be opened with CAD? - HCBBS Forum
29. Interlock issue related to pressure difference in wastewater thermal pyrolysis - HCBBS Forum
30. Are there any requirements for setting up a temporary storage tank for steam condensate? Can a atmospheric pressure storage tank be used? Is it necessary to keep it sealed? - HCBBS Forum
31. Perry-s-chemical-Engineer-s-handbook-Section-4 - HCBBS Forum
32. Average relative volatility of the distillation column - HCBBS Forum
33. Petrochem Process Handbook Petrochem Process HB - HCBBS Forum
34. Intelligent process design software is online, it’s what I want - HCBBS Forum
35. Excuse me, in the absence of a torch, where should the vent port of the safety valve be directed? - HCBBS Forum
36. Does the flange sealing surface need to be coated with grease? - HCBBS Forum
37. Announcement by the State Administration for Market Regulation on the Issuance of the «Technical Regulations for Boiler Safety» (No. 45, 2020) - HCBBS Forum
38. When determining the location for a flammable liquid detector, does wind direction need to be taken into account? Are there any standards for this? - HCBBS Forum
39. Wrap gasket material - HCBBS Forum
40. Wet oxidation - HCBBS Forum
41. Process flow diagram - HCBBS Forum
42. MDEA corrosion mechanism - HCBBS Forum
43. Elbow multiple - HCBBS Forum
44. If there is a sudden power outage across the entire plant, will the DCS program stop working? What emergency measures should be taken in the factory area? - HCBBS Forum
45. Have you ever done RTO design? - HCBBS Forum
46. By how much does the flash volume of a high-temperature, high-pressure liquid increase after depressurization? - HCBBS Forum
47. Chemical reaction - HCBBS Forum
48. List of Process Information Encyclopedia 23.5 [Basic Theory of Chemical Engineering] (no attachments) - HCBBS Forum
49. How do concrete plants transport concrete and how is it measured? - HCBBS Forum
50. Are facilities for treating VOCs through catalytic oxidation (CO) considered equipment involving open flames? - HCBBS Forum
51. What is the insulation code for UW? - HCBBS Forum
52. Can the safety department and the environmental protection department in hazardous chemicals enterprises be merged, and can the same person serve as the head of both departments? - HCBBS Forum
53. Can liquid chlorine and solid light be stored in the same warehouse? - HCBBS Forum
54. Seeking cooperation for sodium cyanide manufacturing - HCBBS Forum
55. Seeking advice on the selection of steam pressure for boiler deaeration - HCBBS Forum
56. Modern Petrochemical Technology: Methods, Manufacturing and Applications; 2021 by Santi Kulprathipanja - HCBBS Forum
57. Adiabatic temperature rise - HCBBS Forum
58. Is the nitrogen seal valve installed on top of the storage tank or on the ground of the tank? Can it be installed on the riser? - HCBBS Forum
59. Is there a theoretical basis for why the cetane number of n-alkanes is higher than that of isomeric alkanes? The pattern below is merely experimentally determined; is there any reason for this? - HCBBS Forum
60. Hebei Yigao’s world’s largest cellulose ethanol project has been successfully commissioned! - HCBBS Forum
61. On the study of catalyst kinetics - HCBBS Forum
62. Which one, PE or PP, can handle methanol (at room temperature to -45 degrees Celsius)? - HCBBS Forum
63. Who can provide information on the technologies related to methylamine, DMF (dimethylformamide), DMAC (dimethylacetamide), NMP (pyrrolidone), and sodium methoxide - HCBBS Forum
64. Flue gas waste heat power generation or steam boiler - HCBBS Forum
65. Instrument interference issue - HCBBS Forum
66. For 6 kg of saturated steam containing 1-5% hydrochloric acid, what materials are suitable for the steam valves and pipes? - HCBBS Forum
67. Where are the regulatory standards specifying the distance requirements between loading arms and Class A factories, warehouses, roads, civil buildings, Class A and B plant areas, tank farms, etc.? - HCBBS Forum
68. Seek a treatment process for ammonia-nitrogen wastewater with high COD that is friendly to the operating environment - HCBBS Forum
69. Maximum designed inventory in the production unit - HCBBS Forum
70. Production of ultra-pure water - HCBBS Forum
71. Blowout pressure setting - HCBBS Forum
72. Small LNG liquefaction plant with a processing capacity of 25,000. - HCBBS Forum
73. Regarding the CDP series standard catalog - HCBBS Forum
74. I would like to ask the experienced colleagues: what are the standards for using carbon steel, stainless steel, and fluorinated coatings in pipes? - HCBBS Forum
75. Pump flow is too high - HCBBS Forum
76. Function of the outlet flushing oil line of the diesel hydrocracking feed pump. - HCBBS Forum
77. Why is a return pipe needed in a circulating water tank? - HCBBS Forum
78. In the heat transfer oil furnace room, is it possible to install a vaporizer to prevent the light oil from vaporizing next to the oil storage tank? - HCBBS Forum
79. I would like to ask further: for the safety valves on hot water system pipes, how is the discharge capacity of these safety valves calculated? - HCBBS Forum
80. Seeking advice on how to insulate a steel-lined PTFE storage tank It’s in the northeast, with temperatures of minus thirty to forty degrees. - HCBBS Forum
81. Schematic flow diagram of the residue hydroprocessing process - HCBBS Forum
82. How do international companies refer to their operators? - HCBBS Forum
83. Can deionized water be prepared using hot water? - HCBBS Forum
84. How should electrical equipment be inspected and maintained during holidays, and what precautions are necessary? - HCBBS Forum
85. The ammonia content in the condensate of the conversion system is high - HCBBS Forum
86. Switching of liquid ring vacuum pump - HCBBS Forum
87. Hydrogenation of dimethyl oxalate to methyl glycolate - HCBBS Forum
88. Dimethyl ether - HCBBS Forum
89. Ground Torch Operation Record Sheet - HCBBS Forum
90. Is this design approach of using only variable-frequency pumps to control flow without regulating valves now mature? - HCBBS Forum
91. Regarding Atlas air compressor failures - HCBBS Forum
92. How to handle hydrogen exhaust gas - HCBBS Forum
93. Installation settings of the safety valve - HCBBS Forum
94. How to conduct a gas-tightness test on high-pressure natural gas pipelines inside a station - HCBBS Forum
95. The on-site temperature transmitter has an on-site digital display, but there is no signal in the control room. What could be the reason? - HCBBS Forum
96. I would like to ask what the chemical formula and structural formula of 1,3-dioxaoctane are - HCBBS Forum
97. Regarding the on-site use of the pH meter, please ask someone who knows the answer to help! ! - HCBBS Forum
98. Help with pump hydraulic calculation problem - HCBBS Forum
99. Installation height of oxygen detection alarm - HCBBS Forum
100. How to prevent explosions in Roots blowers used for oil and gas recovery? - HCBBS Forum