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Method for controlling concentration of sulfureted hydrogen in circulating hydrogen of hydrogenation unit

A hydrogenation device and cycle control technology, which is applied in the direction of hydrocarbon oil treatment control/regulation, and treatment with hydrogen-generating compounds, can solve the problems of high investment costs, achieve the effects of improving product properties, simple equipment, and prolonging the stable operation period

Active Publication Date: 2007-07-25
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

This patent has the characteristics of large desulfurization capacity and high desulfurization efficiency, and can be operated continuously, but the investment cost is relatively high

Method used

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  • Method for controlling concentration of sulfureted hydrogen in circulating hydrogen of hydrogenation unit

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example 1

[0025] Table 1 shows the relationship between the concentration of injected alkaline solvent and the removal of hydrogen sulfide. Fig. 1 is the influence of embodiment 1 hydrogen sulfide on hydrodediene. The alkaline solvent is ammonia, the concentration is the weight concentration, and the water injection volume is the same as that in normal operation, which is 4m% of the mass of the raw material oil.

[0026] Table 1 Removal of Diolefins from Gasoline Feedstock and Refined Oil

[0027] Concentration of injected alkaline solvent, wt

[0028] Process conditions: hydrogen partial pressure, 3.2MPa; hydrogen-oil volume ratio, 600v / v volume space velocity, 5.0h -1 The reaction temperature is 180°C, and the catalyst is the FH-98 hydrorefining catalyst developed by Fushun Petrochemical Research Institute and produced by Wenzhou Huahua Company.

example 2

[0029] Example 2 Diesel Hydrogenation Unit Test. The alkaline solvent is triethanolamine, the concentration is the weight concentration, and the water injection volume is 1.2 times of the normal operation water injection volume, which is 5m% of the mass of the raw material oil.

[0030] Table 2 Results of injection of alkaline solvent in diesel hydrogenation industrial unit

[0031] Concentration of injected alkaline solvent, %

[0032] Process conditions: hydrogen partial pressure, 6.4MPa; hydrogen-oil volume ratio, 500v / v volume space velocity, 2.0h -1 The reaction temperature is 360°C, and the catalyst is the FH-98 hydrorefining catalyst developed by Fushun Petrochemical Research Institute and produced by Wenzhou Huahua Company.

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Abstract

This invention relates to a method for controlling H2S concentration in circulating H2 in hydrogenation apparatus. The method comprises: continuously or intermittently adding an appropriate amount of alkaline solvent into the water-injection pump inlet of hydrogenation apparatus, neutralizing H2S in circulating H2 when ammonium salt crystal is generated, and further dissolving H2S in water phase to reduce H2S concentration to an appropriate value. The method can reduce H2S concentration in circulating H2, and improve catalyst hydrogenation activity and stability. Besides, the method also has such advantages as low cost and easy operation, and can be used in the process of high-quality clean fuel production from fraction oil by hydrogenation.

Description

technical field [0001] The invention relates to a method for controlling the concentration of hydrogen sulfide in circulating hydrogen in a hydrogenation device, in particular to the process of producing high-quality clean fuel by hydrotreating distillate oil, controlling the concentration of hydrogen sulfide in circulating hydrogen, ensuring the activity of hydrogenation catalysts, and preventing hydrogenation A method for hydrogen catalysts to lose sulfur. Background technique [0002] The sustained development of the national economy has driven the rapid development of the automobile industry and the transportation industry. At the same time, the harmful substances emitted by automobile exhaust have become the biggest public hazard of serious air pollution in cities. How to effectively control the emission of harmful substances in automobile exhaust and produce more clean fuels is an urgent problem to be solved at present. At the same time, due to the rapid increase in t...

Claims

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Application Information

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IPC IPC(8): C10G49/18C10G49/26
Inventor 方向晨刘继华李扬徐大海赵乐平牛士坤
Owner CHINA PETROLEUM & CHEM CORP
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