English — Forum #337 (Page 35/163)

1. Number of tank groups - HCBBS Forum
2. A major project to address the carbon peak at the million-ton level is here! Seal carbon dioxide underground and bring oil to the surface! - HCBBS Forum
3. PFD diagram - HCBBS Forum
4. Domino effect analysis - HCBBS Forum
5. The HGCAD toolbar has disappeared - HCBBS Forum
6. After drying, concentrated sulfuric acid contains 75-85% sulfuric acid; how can it be purified and concentrated further? - HCBBS Forum
7. Control principle of refrigerators - HCBBS Forum
8. Latent heat of vaporization of steam - HCBBS Forum
9. How can the manhole door of a rotary kiln be opened easily when its rotation has stopped? - HCBBS Forum
10. What should the nitrogen purging supply pressure be? Is it better to use a control valve for step control, or a self-acting pressure regulator? - HCBBS Forum
11. Why is a nitrogen generator installed alongside an air compressor? - HCBBS Forum
12. Are dust concentration detectors and alarms required in the tire pyrolysis workshop and the carbon black storage area? If so, should a standard dust concentration detector or a coal mine dust detector be used? - HCBBS Forum
13. Wastewater treatment - HCBBS Forum
14. How is the flood control level for petrochemical engineering projects determined? - HCBBS Forum
15. What kind of filter should be used for fine particulate coke and tar in semi-coke wastewater? - HCBBS Forum
16. Calculation problems - HCBBS Forum
17. Various problems encountered by the low-pressure depropanizer tower during the start-up and operation of the unit. - HCBBS Forum
18. Does anyone have the Chinese version of API685? Please send it to my email address - HCBBS Forum
19. Why cannot flame and plasma cutting be used for process pipelines made of stainless steel and alloy steel? - HCBBS Forum
20. Pump cooling water recovery issue in the pump pit - HCBBS Forum
21. Heating furnace drying - HCBBS Forum
22. Analysis of the causes of compressor surge - HCBBS Forum
23. butyl acetate - HCBBS Forum
24. Welding groove shape - HCBBS Forum
25. Ventricular jet parameters? - HCBBS Forum
26. Please tell me about the falling weight experiment mentioned in 150 - HCBBS Forum
27. Acetonitrile dehydration - HCBBS Forum
28. For a 2m x 6.5m high oxidation tower with a weight of 40 tons when filled with water, does it comply with the regulations if the owner requests that no foot bolts be used? - HCBBS Forum
29. Urgent! Urgent! Urgent! ! ! Are there pipes made of PP material that are specifically anti-static? - HCBBS Forum
30. Effect of amine solution concentration on CO2 absorption - HCBBS Forum
31. PDMS piping - HCBBS Forum
32. Dear teachers, does a potassium hypochlorite solution with an effective chlorine content of 4.25%–5.75% (W/V) fall under the category of hazardous chemicals? - HCBBS Forum
33. How often should the carbon molecular sieve in a PSA nitrogen generator be replaced? - HCBBS Forum
34. Decarbonize natural gas, right? - HCBBS Forum
35. Anti-surge control for centrifugal compressors - HCBBS Forum
36. How are the basic mesh dimensions and mesh counts in GB/T5330 related to each other? - HCBBS Forum
37. Are there any manufacturers that produce MVR? There are projects seeking cooperation - HCBBS Forum
38. Where does the work output by a turbine expander take place? - HCBBS Forum
39. Flue Gas Desulfurization Process Manual - HCBBS Forum
40. Evaporation rate of water at 90 degrees Celsius - HCBBS Forum
41. Should emergency venting be included in the emergency stop function of the SIS system? - HCBBS Forum
42. The reaction vessel is stirred, and more and more solid material precipitates at the upper part where stirring takes place - HCBBS Forum
43. Properties of polyglycolic acid - HCBBS Forum
44. English-Chinese, Chinese-English Illustrated Dictionary of Chemical Engineering Processes and Equipment - HCBBS Forum
45. What are the standards used for the acceptance of coking safety facilities? - HCBBS Forum
46. Announcement of the Top 10 News Stories in the Oil and Chemical Industry for 2019 - HCBBS Forum
47. Issues regarding the spraying of fire-resistant coatings on steel structures - HCBBS Forum
48. Here, the 212-type enamel reaction kettles don’t have lubricant applied to their seals; I’m not sure why - HCBBS Forum
49. On the heat recovery issue of low-temperature flow streams - HCBBS Forum
50. Distillation tower – Inlet temperature - HCBBS Forum
51. Low-temperature ethylene, liquid ammonia, propane vaporizer - HCBBS Forum
52. The National Technical Exchange Conference on Measurement Control and Safety Management in Petrochemical Storage and Transportation Tank Areas came to a successful conclusion - HCBBS Forum
53. Tail gas treatment in the tank farm area - HCBBS Forum
54. May I ask if the distillation towers, storage tanks, etc., associated with the factory building can be located nearby outside the building? - HCBBS Forum
55. PH refers to the impact on water treatment processes - HCBBS Forum
56. What is the role of the material level in the two-reactor zone of an FCC reactor? - HCBBS Forum
57. Container material inlet style - HCBBS Forum
58. What is the difference between reboiler steam inlet control and outlet control? - HCBBS Forum
59. Process flows of two-stage catalytic cracking reactor regeneration systems equipped with heat removal facilities - HCBBS Forum
60. The pump power is too high - HCBBS Forum
61. Which parts of the pump’s piping and ductwork require mounting brackets? - HCBBS Forum
62. What is the temperature below which low-temperature steel needs to be used? - HCBBS Forum
63. National Symposium on the Petroleum and Chemical Industry Held - HCBBS Forum
64. Solubility of sodium pyrophosphate - HCBBS Forum
65. Vacuum pump calculation and puzzle solving - HCBBS Forum
66. Various calculation formulas in chemical engineering - HCBBS Forum
67. A flowchart of the production of fuel and lubricants through hydrocracking reactions, shown in one go - HCBBS Forum
68. Seeking help: What reacts with silver to produce a multicolored patina on its surface? - HCBBS Forum
69. Issues with liquid-phase side-line extraction? Could some expert take a look and check if the analysis is correct? - HCBBS Forum
70. Ventilator wind pressure - HCBBS Forum
71. Installation of skid-mounted equipment - HCBBS Forum
72. What are the schematic symbols for PID diagrams of various valves? - HCBBS Forum
73. Who has the 707 chemical tool kit with all tools, in the green version? - HCBBS Forum
74. Is cutting ethanol pipes with a hand saw considered a hot work task? - HCBBS Forum
75. Removal of nitrate from nickel sulfate solution - HCBBS Forum
76. I am a company looking for a supplier of electronic-grade sulfuric acid products - HCBBS Forum
77. Discussion on conventional crystallization equipment - HCBBS Forum
78. Schematic diagram of the conventional delayed coking process - HCBBS Forum
79. Cost advantages in the oxidation of toluene to phenol versus the oxidation of isopropylbenzene to phenol - HCBBS Forum
80. Is it necessary to install a manual globe valve at the outlet of every pipe connected to the methanol storage tank equipment? What is the basis for this? - HCBBS Forum
81. Spraying refractory coating on the skirt of towers in coal chemical plants - HCBBS Forum
82. How to prevent crystallization in 98% sulfuric acid pipelines on the utility tunnel? ? - HCBBS Forum
83. How much pressure can HDPE pipes withstand? - HCBBS Forum
84. I would like to ask if there are any requirements regarding the pipes that connect the safety valves of steam containers to the outside ? ? ? - HCBBS Forum
85. Float-type stainless steel assembled floating pad - HCBBS Forum
86. Design kickoff meeting - HCBBS Forum
87. Working Principle and Maintenance of Pressure Transmitters - HCBBS Forum
88. With the same amount of heat and identical inlet water temperature and pressure, different grades of steam are produced. How is the steam output calculated? - HCBBS Forum
89. Issues regarding the submission of reports for pressure pipelines! ! ???????????? - HCBBS Forum
90. Purification and separation of mixed aqueous solutions - HCBBS Forum
91. High-temperature pump - HCBBS Forum
92. Ceramic-lined elbow for power plants - HCBBS Forum
93. Heat exchanger fluid flow direction - HCBBS Forum
94. The difference between steel structures and platforms and supports - HCBBS Forum
95. Dry pot remaining from sulfur production - HCBBS Forum
96. Orifice plate calculation - HCBBS Forum
97. How does sodium hypochlorite produce acid? - HCBBS Forum
98. Problems with the use of butanol dehydrogenation catalysts - HCBBS Forum
99. The material for the paper has been finalized; I want to submit it to SCI/EI-indexed journals, Chinese core journals, or China Science and Technology Core Journals. Which journals should I choose? - HCBBS Forum
100. Accurate Pipe Pressure Drop Calculation Table (Excel) —— Calculation results including 5 formulas - HCBBS Forum