Hydrogenation method and system for crude benzene, pyrolysis gasoline, naphtha and stable light hydrocarbon

Through the multi-stage hydrogenation method, the treatment of crude benzene, cracked gasoline, naphtha and stable light hydrocarbons, the problem of difficult heat control of the hydrogenation reaction in the prior art is solved, and the stable control of temperature and the improvement of product yield is achieved.

CN119709266APending Publication Date: 2025-03-28濮阳市中汇新能源科技有限公司
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Patent Information

Application Number
CN202411961114.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

Prior art In the hydrogenation reaction of crude benzene, cracked gasoline, naphtha and stable light hydrocarbons, it is difficult to control the heat released by the reaction, resulting in the out of control of the reaction.

Method used

The multi-stage hydrogenation method is adopted, and the cracked gasoline and stable light hydrocarbons are treated by the first liquid phase hydrogenation device and the second liquid phase hydrogenation device, respectively, the reaction temperature is controlled, and the hydrogenation reaction is carried out with hydrogen gas using a catalyst.

Benefits of technology

The temperature of the hydrogenation reaction is effectively controlled, the yield of pure benzene is increased, energy consumption is reduced, and the utilization rate of raw materials is improved.

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Abstract

The invention belongs to the technical field of chemical hydrogenation, and particularly relates to a hydrogenation method and system for crude benzene, pyrolysis gasoline, naphtha and stable light dydrocarbon, the method comprises the following steps: mixing and filtering pyrolysis gasoline and / or stable light dydrocarbon, heating at 40-45 DEG C for 3-5 seconds, heating to 45-50 DEG C, heating for 3-5 seconds, continuously heating to 70-75 DEG C for 3-5 seconds, and filtering to obtain the crude benzene, pyrolysis gasoline, naphtha and stable light dydrocarbon. Then carrying out hydrogenation reaction with a catalyst and hydrogen in a first liquid phase hydrogenation device at 100-105 DEG C for 10-20 seconds to obtain a hydrogenated liquid material; the method is stable in production and high in benzene yield.
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