English — Forum #439 (Page 9/43)

1. What causes the reactor to suddenly experience pressure buildup at the start of operation? Please give me some advice, masters - HCBBS Forum
2. Salt formation in the recycle hydrogen desulfurization tower - HCBBS Forum
3. Catalyst for the hydrogenation of phenol to cyclohexanol - HCBBS Forum
4. The metallographic inspection of the elbow on the large cover of the hydrogenation reactor shows severe spheroidization; is it necessary to replace it? - HCBBS Forum
5. Who can send me a copy of the production operation record sheet for hydrogen production using natural gas, the equipment inspection sheet, and the shift handover record sheet? - HCBBS Forum
6. 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
7. What standards are used to precisely regulate the feed gas for hydrogen production from natural gas? - HCBBS Forum
8. High methanol content at the bottom of the wash tower in methanol-to-hydrogen process - HCBBS Forum
9. Are there any friends who have passed the safety assessment exam? - HCBBS Forum
10. 【Ten Years of Great Development in Chemical Equipment】 From 3088 to 2026, China’s first demonstration project for producing high-quality synthetic crude oil by coupling green hydrogen with low-grade heavy oil will be launched - HCBBS Forum
11. How to increase the adsorption pressure and decrease the desorption pressure when the components of the feed gas and the temperature remain constant - HCBBS Forum
12. Hydroisomerization dewaxing technology - HCBBS Forum
13. For a full-cycle process, what are the requirements for the circulating oil? - HCBBS Forum
14. Question regarding the reduction of dry gas hydrogen production catalysts - HCBBS Forum
15. Fluctuations in the bottom liquid level of the distillation column in the diesel hydrorefining unit - HCBBS Forum
16. 【Ten Years of Great Development in Chemical Engineering Equipment】 The world’s first complete set of equipment for the continuous hydrogenation synthesis of special amine materials using single-atom catalysis at a scale of 10,000 tons per year—developed between 2968 and 2026—has been put into operation - HCBBS Forum
17. NUCUU’s advanced technologies - HCBBS Forum
18. Hydrogen pressure reduction equipment - HCBBS Forum
19. Shutdown of the high-pressure hydrocracking unit - HCBBS Forum
20. World’s largest electrolytic water hydrogen production project unveiled; chemical giant Baofeng Energy makes a splash in the hydrogen sector - HCBBS Forum
21. Seeking help with AspenHYSYS simulation for hydrocracking processes - HCBBS Forum
22. Hydrogenation filter - HCBBS Forum
23. Recruiting quality inspection engineers for pressure vessel manufacturing - HCBBS Forum
24. Diesel hydrogenation - HCBBS Forum
25. 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
26. How to ensure the quality of metal wound gaskets. - HCBBS Forum
27. Has the hydrocracking unit of Panjin Haoye Chemical been put into operation? - HCBBS Forum
28. [Haichuan Hydrogen Energy] Current Development Status and Economic Analysis of Hydrogen Production Technologies Using Fossil Feedstocks - HCBBS Forum
29. Regarding the installation of wall valves in tower systems - HCBBS Forum
30. Compressor selection - HCBBS Forum
31. Outlet buffer tank of the new hydrogen machine - HCBBS Forum
32. On the naphthenic hydrocarbon content and smoke point of jet fuel - HCBBS Forum
33. Do hydrogen production and refueling station projects need to obtain a safety production license for hazardous chemicals? - HCBBS Forum
34. Which are the reliable manufacturers for producing hydrogen via water electrolysis at a rate of 1000–2000 Nm3/H? - HCBBS Forum
35. Whole hydrogen production unit delivered as a package - HCBBS Forum
36. Natural gas hydrogen production process package manufacturers - HCBBS Forum
37. Discussion on Questions Regarding Hydrogenation Catalyst Regeneration - HCBBS Forum
38. What is the purpose of placing the control valve assembly on the feed line as close as possible to the tower’s feed inlet? - HCBBS Forum
39. stripper - HCBBS Forum
40. Analysis of gas combustion issues in natural gas-based hydrogen production plants - HCBBS Forum
41. Hazard factors and preventive measures during the shutdown of hydrogenation units - HCBBS Forum
42. Operating temperature for tubular container - HCBBS Forum
43. Liquid level control scheme for the buffer tank of diesel and gasoline blended hydrogenation feedstock oil - HCBBS Forum
44. Does the Ningxia Coal Synthetic Oil Plant have a hydrocracking unit? - HCBBS Forum
45. 【Haichuan Chemical Valve Management】Series Posts--What Exactly Is Valve Cavitation? How to solve it? - HCBBS Forum
46. Blockage at the inlet of the oily wastewater pump - HCBBS Forum
47. 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
48. Abnormality handling of the circulating hydrogen separation tank - HCBBS Forum
49. Breakthrough achieved in pure-free electrolytic hydrogen production from gas field produced water at Dongfang Electric Research Institute - HCBBS Forum
50. Reason for not injecting water before the second-stage hydrogenation condenser in the pyrolysis gasoline hydrogenation unit - HCBBS Forum
51. Cyclic hydrogen compressor shutdown - HCBBS Forum
52. Is there any equipment for processing straight-run oil alone? - HCBBS Forum
53. The nation’s first CCER methodology in the hydrogen energy sector has been officially released - HCBBS Forum
54. Automatic backwash filter for diesel hydrogenation - HCBBS Forum
55. Request detailed operating procedures for hydrogen production from natural gas - HCBBS Forum
56. A milestone has been reached in China’s demonstration project for green hydrogen integration with million-ton-scale coal-to-oil production; the Qingshuiying hydrogen production plant in Ningxia has now produced over a thousand tons of hydrogen in total - HCBBS Forum
57. Will the pressure tapping pipe on the 3.5MPa steam pipeline get clogged? - HCBBS Forum
58. How is heat exchange carried out for the hydrogenated refined diesel as it comes out of the transfer pump? - HCBBS Forum
59. New hydrogen compressor compression ratio - HCBBS Forum
60. Drum and air induction interlock - HCBBS Forum
61. What is the function of the rectification section in a distillation column? - HCBBS Forum
62. Treating \"heavy\" materials as if they were light: the function of slurry-bed hydroprocessing of crude oil residues in producing \"blood\" - HCBBS Forum
63. 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
64. Zhejiang Petrochemical’s 5 million tons of residue hydroprocessing project - HCBBS Forum
65. Control system for alkaline water hydrogen production system - HCBBS Forum
66. Implementation Plan for the General Operator Certification Program for Hydrogenation Units in Chemical Enterprises - HCBBS Forum
67. HAZOP analysis - HCBBS Forum
68. Pilot-scale operation of a gas-liquid-solid three-phase continuous hydrogenation reactor was successful - HCBBS Forum
69. 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
70. On the ideal gas law - HCBBS Forum
71. How to purify hydrogen from refinery exhaust containing high amounts of C5 - HCBBS Forum
72. Inlet/Outlet Device Isolation Valve Platform - HCBBS Forum
73. May I ask why there is Cl in the new hydrogen? - HCBBS Forum
74. Hydrogen specification requirements for hydrogen after desulfurization in the hydrogenation unit - HCBBS Forum
75. Direct feed control between units - HCBBS Forum
76. How to thoroughly purge the low-pressure section of a gasoline and diesel hydrogenation unit to the distillation tower - HCBBS Forum
77. A safety valve needs to be installed in a negative pressure tower, right? - HCBBS Forum
78. PSA pressure swing adsorption - HCBBS Forum
79. Nitrogen in the circulating hydrogen compressor tank - HCBBS Forum
80. Solving corrosion problems in hydrogenation units - HCBBS Forum
81. Reusing the temperature of the oil and gas at the top of the tower – a solution to the high temperature of such oil and gas in summer? - HCBBS Forum
82. The issue of gaskets to be used in liquid chlorine pipelines. - HCBBS Forum
83. Is vacuum desorption or passive desorption better for pressure swing adsorption? - HCBBS Forum
84. Seeking similar devices for comparison. - HCBBS Forum
85. There are really no more questions; just pick any one – a question related to the quality of hydrogen - HCBBS Forum
86. Selection of diol catalyst reduction method (high hydrogen, low hydrogen) - HCBBS Forum
87. The residue hydrogenation reactor uses a dense-phase packing, resulting in an excessive increase in bed pressure drop. - HCBBS Forum
88. Using a \"heavy\" element as if it were light: the distributor in the slurry-bed residue hydrogenation reactor for refining processes - HCBBS Forum
89. Hydrocracking Unit Technical Manual 2019, compiled by Bie Dongsheng - HCBBS Forum
90. Placement of the variable-frequency fan in the air cooler - HCBBS Forum
91. Does water-coal slurry gasification, which is part of petrochemical projects, fall under coal chemical industry? - HCBBS Forum
92. When starting up the reaction system, should the new hydrogen generator be started first or the hydrogen circulation pump? What is the answer? - HCBBS Forum
93. International Hydrogen Energy Committee: China dominates global green hydrogen production capacity“****” - HCBBS Forum
94. After the natural gas flow control valve is reduced, does the frequency of the natural gas compressor need to be lowered as well? - HCBBS Forum
95. Is 2Cr13 suitable for the piston rod of a hydrogen sulfide-containing 2% cyclic hydrogen compressor? - HCBBS Forum
96. Jingmen Petrochemical’s 600,000 tons/year high-pressure hydrogenation project for naphthenic specialty oils has been mechanically completed - HCBBS Forum
97. Analysis indicators for hydrogen production and purified water - HCBBS Forum
98. The recycle hydrogen desulfurization tower in hydrocracking often foams - HCBBS Forum
99. Centrifugal compressor efficiency - HCBBS Forum
100. Hydrogenation unit shutdown - HCBBS Forum