English — Forum #439 (Page 3/43)

1. When are the daily questions usually released? - HCBBS Forum
2. 【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 091 - HCBBS Forum
3. How to handle winding tube heat exchangers effectively during shutdown for maintenance and after cleaning, in order to prevent any residual cleaning solution from remaining in dead zones - HCBBS Forum
4. Control of the acid value in aviation fuel products - HCBBS Forum
5. What should be the appropriate flow rate of hydrogen in the pipeline? - HCBBS Forum
6. Wax oil sample analysis - HCBBS Forum
7. What is the typical hydrogen-to-oil ratio for gasoline and diesel hydroprocessing, as well as for diesel hydroprocessing? What is an appropriate level for hydrogen sulfide in the recycled hydrogen during operation? - HCBBS Forum
8. 【Daily Question】Hydrogen production and hydrogenation technology version 20190615 - HCBBS Forum
9. Design specifications for on-site vent pipes - HCBBS Forum
10. The difference between deionized water and deoxygenated water - HCBBS Forum
11. Investment in hydrogen production via water electrolysis - HCBBS Forum
12. The plant is shut down today. Could you advise on the precautions to take during the process of introducing hot hydrogen along with oil, as well as during constant-temperature hydrogen removal? - HCBBS Forum
13. On the naphthenic hydrocarbon content and smoke point of jet fuel - HCBBS Forum
14. [Q&A Question 213] 2017.08.01 - HCBBS Forum
15. Discuss methods for controlling methane in the conversion gas of the conversion furnace - HCBBS Forum
16. 【Q&A Question 119】April 29, 2018 - HCBBS Forum
17. Where does the desorbed gas from the PSA unit of the dry gas/natural gas hydrogen production plant go? Has anyone experienced an interlock in the converter due to a PSA flushing control valve that wouldn’t close properly? Converter interlock.. - HCBBS Forum
18. What causes the reactor to suddenly experience pressure buildup at the start of operation? Please give me some advice, masters - HCBBS Forum
19. 【Daily Question】Hydrogen production and hydrogenation technology version 20191227 - HCBBS Forum
20. Carbon deposition treatment of conversion catalysts - HCBBS Forum
21. Calculate the catalyst loading in each section of the reactor based on the composition of the feed gas, the type of catalyst, and relevant process design parameters - HCBBS Forum
22. May I ask what the composition is of Light Hydrocarbon No. 1, and why it is immiscible with methanol? - HCBBS Forum
23. How should the emergency venting system be used properly when the pressure under high-load conditions gets out of control? - HCBBS Forum
24. How to deal with a high pressure difference between the inlet and outlet of the hydrofining reactor in a hydrocracking unit? - HCBBS Forum
25. Laboratory analysis time and hot work time - HCBBS Forum
26. 【Daily Question】Hydrogen production and hydrogenation technology version 20191203 - HCBBS Forum
27. What are the effects of excessive sulfur content in a hydrogenation system? - HCBBS Forum
28. Water-hydrogen engine - HCBBS Forum
29. 【Daily Question】Hydrogen production and hydrogenation technology version 20191205 - HCBBS Forum
30. Reaction conversion rate, yield, selectivity, reaction rate - HCBBS Forum
31. 【Daily Question】Hydrogen production and hydrogenation technology version 20200511 - HCBBS Forum
32. Compressor selection - HCBBS Forum
33. Will fuel gas catch fire spontaneously at 750 degrees? - HCBBS Forum
34. Heating furnace interlock issues - HCBBS Forum
35. 【Daily Question No. 017】2017.01.17 - HCBBS Forum
36. [Q&A Question 067] 2018.03.08 - HCBBS Forum
37. Technical agreement regarding HAZOP, LOPA, and SIL classification for hydrogenation units - HCBBS Forum
38. 【Daily Question】Hydrogen production and hydrogenation technology version 20200507 - HCBBS Forum
39. Installation of pressure transducers for measuring steam flow rate - HCBBS Forum
40. 【Daily Question】Hydrogen production and hydrogenation technology version 20191113 - HCBBS Forum
41. Centrifugal compressor efficiency - HCBBS Forum
42. Hydrogenation unit shutdown - HCBBS Forum
43. 【Q&A Question 162】2018.06.11 - HCBBS Forum
44. Shutdown of the high-pressure hydrocracking unit - HCBBS Forum
45. 【Daily Question No. 301】November 03, 2018 - HCBBS Forum
46. 【Daily Question No. 075】March 16, 2017 - HCBBS Forum
47. Why is gravel laid under the pipe racks in petroleum chemical plants? - HCBBS Forum
48. Is the inlet control valve of the feed gas compressor in the hydrogen production plant a pressure-controlled valve or a flow-controlled valve? - HCBBS Forum
49. 【Daily Question Question 334】December 18, 2017 - HCBBS Forum
50. 【Daily Question Question 237】2017.08.25 - HCBBS Forum
51. Pre-sulfidation issue of pre-hydrogenation catalysts - HCBBS Forum
52. 【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 019 - HCBBS Forum
53. 【Daily Question】Hydrogen production and hydrogenation technology version 20190628 - HCBBS Forum
54. I’m a recent graduate in chemical engineering, a complete novice, and have just started working in the residue hydrogenation and dry fractionation role - HCBBS Forum
55. \"2017 Work Summary: Maintenance Equipment Management for Cracking Units\" (Statistics completed) - HCBBS Forum
56. [E-book] Hydrogenation Unit Studies* Notes – Chapter 8: Discussion on Single-unit Commissioning - HCBBS Forum
57. Pilot-scale operation of a gas-liquid-solid three-phase continuous hydrogenation reactor was successful - HCBBS Forum
58. The issue of gaskets to be used in liquid chlorine pipelines. - HCBBS Forum
59. Petroleum resin - HCBBS Forum
60. What does a failed Dr. Gasoline test in a hydrogenation unit relate to? - HCBBS Forum
61. 【Daily Question Question 322】2017.12.06 - HCBBS Forum
62. 【Q&A Question 107】April 17, 2018 - HCBBS Forum
63. 【Daily Question Question 330】December 14, 2017 - HCBBS Forum
64. The design institute will come tomorrow to guide us in starting up the fluidized bed - HCBBS Forum
65. Antiscalant for wax oil hydrogenation - HCBBS Forum
66. Programmable valve for pressure swing adsorption - HCBBS Forum
67. Second-hand water electrolysis hydrogen production equipment - HCBBS Forum
68. How does adsorption time affect the recovery rate? - HCBBS Forum
69. [Q&A Question 267] 2017.09.25 - HCBBS Forum
70. 【Daily Question No. 134】May 14, 2017 - HCBBS Forum
71. 【Q&A Question 076】March 17, 2018 - HCBBS Forum
72. What to do if there is a high pressure difference in the hydrodesulfurization dry gas tower for gasoline and diesel, caused by clogged packing? - HCBBS Forum
73. When the level gauge in the sedimentation tank of the thermal hydrocracking unit for gasoline processing was put into use, the liquid level in this unit fluctuated significantly - HCBBS Forum
74. 【Q&A Question 315】November 29, 2017 - HCBBS Forum
75. Control system for alkaline water hydrogen production system - HCBBS Forum
76. Excessive reduction of medium-temperature catalyst - HCBBS Forum
77. In refining and hydrogenation processes, what level should the hydrogen sulfide content in the recycled hydrogen be controlled at? - HCBBS Forum
78. 【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 061 - HCBBS Forum
79. [Q&A Question 108] 2017.04.18 - HCBBS Forum
80. What is the optimal operating temperature for PSA for the best adsorption effect? - HCBBS Forum
81. 【Daily Question No. 053】2017.02.22 - HCBBS Forum
82. What SIL documents are required to apply for SIL certification? - HCBBS Forum
83. Cyclic hydrogen compressor shutdown - HCBBS Forum
84. Is there any equipment for processing straight-run oil alone? - HCBBS Forum
85. 【Q&A Question 308】November 22, 2017 - HCBBS Forum
86. Boiling bed hydrogenation - HCBBS Forum
87. Operating temperature for tubular container - HCBBS Forum
88. Interlock for preheating recovery system of heating furnace - HCBBS Forum
89. Hydrogen purity - HCBBS Forum
90. Who has question banks on diesel, gasoline hydrogenation, and dry gas hydrogen production? Please share them! Thank you - HCBBS Forum
91. Which large hydrocrackers currently use the post-mixing process? - HCBBS Forum
92. Handling procedures for “hydrogen interruption” and “hydrogen reduction by half” in diesel hydrogenation units - HCBBS Forum
93. Book help - HCBBS Forum
94. 【Q&A Question 082】March 23, 2017 - HCBBS Forum
95. 【Daily Question】Hydrogen production and hydrogenation technology version 20200112 - HCBBS Forum
96. I would like to ask: if the feedstock for the diesel hydrogenation unit is a mixture of diesel and coker diesel, what could be the reasons why the quality of the refined diesel produced by the hydrogenation unit does not reach 95 points? - HCBBS Forum
97. 【Q&A Question 210】2018.08.04 - HCBBS Forum
98. Dry point of heavy naphtha - HCBBS Forum
99. 【Daily Question Question 321】2017.12.05 - HCBBS Forum
100. 【Daily Question】Hydrogen production and hydrogenation technology version 20191115 - HCBBS Forum