A method for hydroconversion of coal tar by fast pyrolysis

CN122326263APending Publication Date: 2026-07-03CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Application Number
CN202610688711.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-18
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing technologies for the rapid pyrolysis of coal tar with high toluene insoluble content suffer from problems such as the need for deep pretreatment, low catalyst conversion efficiency, and poor resistance to coking.

Method used

A hydrogenation reaction was carried out in a gas-liquid-solid three-phase suspension reactor using a composite system of oil-soluble molybdenum-based catalyst and oil-soluble nickel-based catalyst. The composite catalytic system of oil-soluble molybdenum-based catalyst and oil-soluble nickel-based catalyst enabled the effective conversion of solid insoluble substances with low catalyst dosage.

Benefits of technology

This technology enables the efficient conversion of coal tar with high toluene insoluble content, simplifies the process, reduces costs, improves conversion efficiency, and enhances the economic value of the product.

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Abstract

The application discloses a kind of quick pyrolysis coal tar's hydrogen conversion method, belong to coal tar hydrogenation technical field.The toluene insoluble content of quick pyrolysis coal tar heavy component is 35wt%-40wt%, this method uses oil-soluble molybdenum-based organic precursor and oil-soluble nickel-based organic precursor complex catalyst system, in the presence of hydrogen and vulcanizing agent in gas-liquid-solid three-phase suspension reactor Hydrogenation reaction, wherein the total amount of catalyst metal is 50-200ppm, the mass ratio of molybdenum and nickel in catalyst is 0.5-2:1.The application realizes the efficient conversion of high insoluble coal tar without deashing or filtering pretreatment of raw materials, greatly simplifies process flow, reduces processing cost, has the advantages of low catalyst dosage, high conversion efficiency and high solid content system.
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