English — Forum #337 (Page 69/163)

1. What do dry weight and operating weight in a chemical injection skid mean? - HCBBS Forum
2. Process for producing hexamethylenediamine by hydrogenation of hexanitronic acid using low-pressure method - HCBBS Forum
3. What factors affect the spheroidization effect of ballizing agents used in casting? - HCBBS Forum
4. Is a drain valve needed between the pressure gauge and the root valve? - HCBBS Forum
5. Sudden increase in pressure caused by temperature in a closed pipeline - HCBBS Forum
6. How to select the calculation pressure of the shell wall thickness calculation formula in shell and tube heat exchangers? - HCBBS Forum
7. There are various issues regarding the classification of production processes that pose fire hazards within factory buildings - HCBBS Forum
8. Question for assistance: How can carbon steel pipes lined with glass scales be connected to glass fiber pipes? Are there any relevant standards available? Seek guidance from experts - HCBBS Forum
9. Differences between the Kellogg and Cassali processes for ammonia synthesis - HCBBS Forum
10. What process is suitable for the liquefaction of pure oxygen and pure nitrogen under shaking conditions? - HCBBS Forum
11. Ethylene compression, alkali washing, oxidation of waste alkali - HCBBS Forum
12. [Daily Question] Environmental Protection Knowledge (Multiple Choice) 20200706 - HCBBS Forum
13. A comprehensive analysis of why ORC power generation chooses turbine expanders over screw expanders - HCBBS Forum
14. Question regarding the unloading of liquid ammonia tank trucks - HCBBS Forum
15. [Daily Question] Basic Process Knowledge (True/False: Fill in “√” for correct and “×” for incorrect) 2020.5.11 - HCBBS Forum
16. Steam purging - HCBBS Forum
17. Corrosion protection and iron removal for chlorine pipelines. - HCBBS Forum
18. Brief understanding of petrochemical storage and transportation system design - HCBBS Forum
19. Refrigeration limit temperature of lithium bromide units - HCBBS Forum
20. Can the senior engineer title certificates issued by various provinces and cities be used nationwide? - HCBBS Forum
21. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200408 - HCBBS Forum
22. Does the qualification for storing and transporting petroleum and chemical products enable the design of flares for petrochemical plants? - HCBBS Forum
23. Operating Procedures for Synthetic Ammonia Production at Inner Mongolia Yiding Casali - HCBBS Forum
24. How to choose a double-faced mechanical seal for a deaerator equipped only with a bubble generator - HCBBS Forum
25. [Daily Question] Basic Process Knowledge (True/False: Fill in “√” for correct and “×” for incorrect) April 24, 2020 - HCBBS Forum
26. Downstream products of neopentyl glycol - HCBBS Forum
27. Classification of hydraulic presses according to application characteristics - HCBBS Forum
28. What is the relationship between heating plans and steam balance? - HCBBS Forum
29. Compressor layout - HCBBS Forum
30. Fundamentals of Processing Technology (Multiple Choice) 2020.5.28 - HCBBS Forum
31. What is the difference between Scifinder and Reaxys databases? How to purchase a login account and obtain one? - HCBBS Forum
32. [Daily Question] Basic Process Knowledge (True/False: Fill in “√” for correct and “×” for incorrect) May 10, 2020 - HCBBS Forum
33. Crude oil buffer tank residence time - HCBBS Forum
34. [Daily Question] Basic Process Knowledge (True/False) 20191116 - HCBBS Forum
35. PLC can control it - HCBBS Forum
36. Share: This is how manufacturers of silicon-barium-calcium inoculants for casting make effective choices! - HCBBS Forum
37. What’s it like to study the major in petrochemical production technology? - HCBBS Forum
38. What are the requirements for directly releasing hydrogen into the atmosphere? - HCBBS Forum
39. Judgment criteria for the waterproof performance of waterproof boat-shaped switches - HCBBS Forum
40. How to determine the fire hazard of ethylene glycol aqueous solutions? ? - HCBBS Forum
41. May I ask, in which areas are the design institutes for pesticides and chemical engineering, as well as those for steel engineering, particularly strong? - HCBBS Forum
42. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200118 - HCBBS Forum
43. [Daily Question] Basic Process Knowledge (True/False Questions) 201912 9 - HCBBS Forum
44. Phase diagram of water-salt system - HCBBS Forum
45. For water gas that isn’t subjected to conversion, the cos value is around 200 mg/cubic meter. Is there any similar process in the hydrodesulfurization technique? I’d appreciate some insights on this - HCBBS Forum
46. Can Hastelloy C replace nickel materials? - HCBBS Forum
47. I’m seeking help from experts regarding the calculation of heat loss in greenhouses and pipelines - HCBBS Forum
48. Ask for help - HCBBS Forum
49. Is it necessary to install a water injection system for fully pressurized liquefied butane storage tanks? - HCBBS Forum
50. What pipe diameter is suitable for the DN250 circulating water bypass (anti-freezing line)? - HCBBS Forum
51. Yin-yang bed regeneration concentration - HCBBS Forum
52. Development of gasoline and diesel - HCBBS Forum
53. Wishing everyone a happy New Year - HCBBS Forum
54. Can someone please translate the name of the material? - HCBBS Forum
55. Kill the novel coronavirus - HCBBS Forum
56. Safety relief issues in high-pressure reactors - HCBBS Forum
57. Discussion on the issues related to chiller installation in ammonia synthesis plants - HCBBS Forum
58. Issues with the single-line production capacity of Zhejiang Petrochemical’s DMC-PC - HCBBS Forum
59. Noise in hydraulic systems and methods to eliminate it - HCBBS Forum
60. Can lime neutralization be carried out by adding dry powder directly in the neutralization tank? Is there any problem with that? - HCBBS Forum
61. For the thermometer on the pipeline, what is the minimum pipe diameter it can be installed on? ? - HCBBS Forum
62. Plug valve - HCBBS Forum
63. Bamboo charcoal is produced by burning moso bamboo, from which bamboo vinegar is extracted - HCBBS Forum
64. Is evaporation crystallization feasible for sodium hydroxide waste liquid? How much can be earned from the concentration? - HCBBS Forum
65. Can PE pipes be used as buried sleeves? - HCBBS Forum
66. Is there a cracked version of CADworks? Can it be used? - HCBBS Forum
67. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200303 - HCBBS Forum
68. LPG loading flow rate - HCBBS Forum
69. Is the volatility of dichloromethane still high at minus 15 degrees Celsius? What should be done if frost forms on the heat exchanger? - HCBBS Forum
70. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200219 - HCBBS Forum
71. Discussion on GB/T 3533-2013 \"Construction and Acceptance of Water Supply and Drainage in Petrochemical Industries\" - HCBBS Forum
72. There are dozens of workshops, and with so many products produced, how should the amount of wastewater generated and its composition be calculated in order to determine the appropriate treatment methods? - HCBBS Forum
73. Is it required to have a relevant operation certificate for any installation that involves pressure pipelines or pressure vessels? - HCBBS Forum
74. Questions regarding hydrogen fluoride hazard sources - HCBBS Forum
75. Is Hebei really going to achieve ultra-low emissions this year? - HCBBS Forum
76. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200228 - HCBBS Forum
77. [Daily Question] Basic Process Knowledge (Multiple Choice) 20191105 - HCBBS Forum
78. Under what circumstances should sealed welding not be used? - HCBBS Forum
79. entropy - HCBBS Forum
80. 98 Sulfuric acid unloading problem - HCBBS Forum
81. JTS 158-2019 \"Code for Fire Protection Design of Oil, Gas and Petrochemical Terminals\" (Final Edition) (Updated) - HCBBS Forum
82. [Daily Question] Basic Process Knowledge (True/False: Fill in “√” for correct and “×” for incorrect) April 14, 2020 - HCBBS Forum
83. Brief description of air separation operation problems and solutions 3(3) - HCBBS Forum
84. For 10,000 m3/h of waste gas at room temperature, what is the best method for dehumidification (to a moisture content of less than 30%)? - HCBBS Forum
85. Wastewater treatment methods - HCBBS Forum
86. The shielded pump does not operate - HCBBS Forum
87. Can a project proceed without a process package? - HCBBS Forum
88. Ammonia absorber - HCBBS Forum
89. In the classification standards for pressure vessels, does the design pressure refer to gauge pressure or absolute pressure? - HCBBS Forum
90. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200328 - HCBBS Forum
91. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200123 - HCBBS Forum
92. Replace the calcium chloride aqueous solution with an ethylene glycol aqueous solution? - HCBBS Forum
93. What is the meaning of the closed line in the dimensioning of layout drawings? - HCBBS Forum
94. Basic Process Knowledge (True/False Questions: Fill in “√” for correct answers and “×” for incorrect ones) 2020.5.27 - HCBBS Forum
95. The sealing performance of the tetrafluoro stirrer is poor; I would like to ask the experts for advice on how to address this issue - HCBBS Forum
96. What are the differences between switching power supplies and power boards? - HCBBS Forum
97. What manufacturing process is used for polypropylene in Ningbo Jinfafa New Materials? - HCBBS Forum
98. PTFE+15% ceramic powder mixture - HCBBS Forum
99. How does vacuum level affect the degree of change in boiling point? - HCBBS Forum
100. [Daily Question] Basic Process Knowledge (Multiple Choice) 20200312 - HCBBS Forum