English — Forum #337 (Page 41/163)

1. Static pressure energy of a fluid - HCBBS Forum
2. How is the safety distance determined between Class D equipment and other installations outdoors in Class A factories (fine chemicals)? - HCBBS Forum
3. Who has a registered chemical engineer certificate? I need one - HCBBS Forum
4. Regarding the removal of impurities such as iron using hydrochloric acid - HCBBS Forum
5. Problems with PE pipe and steel pipe flanges - HCBBS Forum
6. Two air-cooled units, one running and one stopped. If there is a deviation in flow, how does it occur? And why? - HCBBS Forum
7. Fire and Explosion Prevention Technology in Petrochemical Industries, Ye Jihong, 2016 edition - HCBBS Forum
8. The pinching and narrow point problem - HCBBS Forum
9. How to avoid or reduce the accumulation of solution crystals on the walls of the crystallization cooler during operation? - HCBBS Forum
10. The function of the S-shaped bend in pipes - HCBBS Forum
11. Could everyone please analyze this? Thank you (regarding distillation towers)? - HCBBS Forum
12. Questions regarding the calculation of thermal insulation layers - HCBBS Forum
13. Regarding the issue of the relative height of the arrangement in thermal siphon reboilers - HCBBS Forum
14. What are the required road spacing requirements between an RTO and surrounding Class A, B, C factories or ordinary workshops, and which regulatory provisions should be referred to for this? - HCBBS Forum
15. How to handle the forestream fraction in batch distillation - HCBBS Forum
16. What is the internal structure of the fire dike in your factory? What kind of paint was used? How is the floor inside the fire dike constructed? - HCBBS Forum
17. Ordinary Class A warehouses are relatively small in size; can they all be converted into Class A3 or Class A4 warehouses, combining the two into one? - HCBBS Forum
18. Zero Point, Distributed Remote IO System User Manual - HCBBS Forum
19. Cooling effect of liquid throttling expansion - HCBBS Forum
20. solid melting point problem - HCBBS Forum
21. Discussion on the relative volatility of multiple components in chemical distillation. - HCBBS Forum
22. What should be the unit of flux for a filter? Can it be abbreviated? - HCBBS Forum
23. Regarding the operating environment of CSTRs. - HCBBS Forum
24. Issue of sharing one nitrogen tank for instrument air and process air - HCBBS Forum
25. How to recycle acetonitrile - HCBBS Forum
26. Permeation vaporization membrane - HCBBS Forum
27. Help needed - HCBBS Forum
28. Where can I find meteorological data, general information on the natural geography, and earthquake information for a particular factory? - HCBBS Forum
29. Definition of a fusible internal floating disk - HCBBS Forum
30. Old K says every week – talking about things in the petrochemical design industry. Post 55: Pressure representation in engineering design - HCBBS Forum
31. UHP continuous reforming catalyst regeneration process - HCBBS Forum
32. What is air blowing water? - HCBBS Forum
33. Regarding activated carbon, I would like some advice - HCBBS Forum
34. Old K says every week – Talking about things in the petrochemical design industry, Post 46: Pump selection and calculation - HCBBS Forum
35. Catalytic cracking equilibrium agents and regenerants - HCBBS Forum
36. Can polyethylene pipes be used in devices with a fire hazard? - HCBBS Forum
37. I want to create an APC tower; I’m not sure how much money it will cost approximately - HCBBS Forum
38. Why is a return pipe needed in a circulating water tank? - HCBBS Forum
39. Issues regarding the substitution of specifications for the commissioning of large and medium-sized units in the chemical industry - HCBBS Forum
40. Some 3D models of heat exchange equipment - HCBBS Forum
41. The meaning of storage and transportation of hazardous chemicals - HCBBS Forum
42. How to address sampling in the hydrogenation reactor? - HCBBS Forum
43. Dimethyl sulfoxide extraction process flow - HCBBS Forum
44. Who has materials on single-line diagrams of chemical plants? Please share them - HCBBS Forum
45. Can a safety valve and an exhaust pipe share the same outlet? - HCBBS Forum
46. Uniform regulations for professional design in Donghua - HCBBS Forum
47. 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
48. Differences in welding 304 stainless steel and ultra-low carbon 304L stainless steel - HCBBS Forum
49. Process Engineer Skills - HCBBS Forum
50. System certification for chemical enterprises - HCBBS Forum
51. Precautions for purchasing wear-resistant ceramic elbows - HCBBS Forum
52. Can a 30-ton steel-lined storage tank be placed directly on a concrete foundation without embedded steel plates or foot bolts? - HCBBS Forum
53. 158 items! Sichuan releases technical guide for green development of oil, gas and chemical industry - HCBBS Forum
54. Searching for the 2005 supplement on the chemical industry and engineering technology. - HCBBS Forum
55. Dear teachers, do the pressure gauges installed on the refrigeration water pipelines need regular inspection? - HCBBS Forum
56. How to draw a patterned steel plate platform on cadworx2015 steel structure? - HCBBS Forum
57. Which expert has the safety data sheet for ethylene cracking triphenylarene raffinate oil? - HCBBS Forum
58. What is the process of describing a catalyst, and what does catalyst reserve mean? - HCBBS Forum
59. Introduction to Chemical Engineering Calculation of Mass Transfer [by Yu Guocong and Yuan Xigang], 2011 edition - HCBBS Forum
60. What is the relationship between the maximum gas seal flow rate of the gas seal and the gas source pressure? - HCBBS Forum
61. I’d like to hear everyone’s suggestions for improvement - HCBBS Forum
62. Application of double-tube reactors in the production of diammonium phosphate and triple-composite fertilizers - HCBBS Forum
63. How to remove diethyl malonate from a mixture of two esters? - HCBBS Forum
64. May the medium discharged from the pressure relief manhole or safety valve be directly released into the atmosphere? Where do you all discharge it to? - HCBBS Forum
65. What is the fire hazard classification of urea? - HCBBS Forum
66. Elimination of internal diffusion in nanocatalysts - HCBBS Forum
67. Consultation regarding steam loss issues - HCBBS Forum
68. Safety valve relief temperature determination - HCBBS Forum
69. Seeking help with the preparation of dilute sulfuric acid - HCBBS Forum
70. Seeking help with the ternary precursor process - HCBBS Forum
71. The reason why a lot of foam is generated when VOCs pass through the sodium hypochlorite tower - HCBBS Forum
72. Process design for chlorine dioxide R8 - HCBBS Forum
73. 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
74. Integrated manual and automatic control - HCBBS Forum
75. For thread sealing at low temperatures, PTFE tape can be used for wrapping; so what is used for high-temperature thread sealing or to prevent sticking of stainless steel threads? - HCBBS Forum
76. New Organic Synthesis Chemistry Edited by Huang Xian, Wang Yanguang, and Chen Zhenchu - HCBBS Forum
77. Can galvanized steel pipes be welded on-site? What should be done if the galvanized coating is damaged? - HCBBS Forum
78. Safety and reliability assessment of chemical process engineering - HCBBS Forum
79. The ethanol double-effect distillation tower is encountering some problems; I would appreciate the advice from all the experts. - HCBBS Forum
80. For a mixture containing 1-2% benzene, about 15% hydrochloric acid, with the remaining components at 130 degrees Celsius, is it better to use tubular or porous graphite heat exchangers? - HCBBS Forum
81. Are there any simple 3D software programs? - HCBBS Forum
82. Acidification of sodium fluosilicate with concentrated sulfuric acid to produce silicon tetrafluoride and anhydrous hydrogen fluoride - HCBBS Forum
83. Typical process flow for aromatic distillation (three-tank process) - HCBBS Forum
84. Have you seen this kind of staircase corridor layout? - HCBBS Forum
85. Process of oil and gas recovery device for oil storage tanks - HCBBS Forum
86. Cobalt sulfate for aluminum removal - HCBBS Forum
87. Egypt invests $7.5 billion in a petrochemical integration project - HCBBS Forum
88. (Fine regulations) Distance from Class B and Class C warehouses to main roads - HCBBS Forum
89. Aromatic stripping oil - HCBBS Forum
90. Find the absolute roughness of steel-lined PTFE pipes - HCBBS Forum
91. Is it necessary to install a check valve on the nitrogen exhaust pipeline of the nitrogen sealing system? If I want to install one, what type of check valve should I choose to enable opening? - HCBBS Forum
92. Is a backup required for the acetylene generation gas tank? - HCBBS Forum
93. Solutions for compressor outlet pipe vibration - HCBBS Forum
94. How is the height position of the equipment brackets above and below the equipment determined? How is the equipment’s center of gravity height calculated? - HCBBS Forum
95. How was your year 2021? - HCBBS Forum
96. How to modify a wlkx file - HCBBS Forum
97. I’m seeking advice from experts: are there any good methods for treating MVR concentrate at the moment? - HCBBS Forum
98. Removal of nitrates from drinking water - HCBBS Forum
99. Diphenylmethane process - HCBBS Forum
100. Is it not acceptable to use a safety valve with a small diameter? But what problems could arise if the diameter is set too large? Larger in diameter than the safety valves of the pressure sources - HCBBS Forum