Low temperature plasma enhanced coal fluidized bed hydro-pyrolysis apparatus and method

The low-temperature plasma-enhanced coal fluidized bed hydropyrolysis device utilizes low-temperature plasma to activate hydrogen-rich gas and stabilize free radicals during coal pyrolysis, solving the problems of low tar yield and high energy consumption in traditional coal pyrolysis and hydropyrolysis, and achieving efficient tar production and resource utilization.

CN122214029APending Publication Date: 2026-06-16TAIYUAN UNIVERSITY OF TECHNOLOGY +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TAIYUAN UNIVERSITY OF TECHNOLOGY
Filing Date
2024-12-16
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Traditional coal pyrolysis technology suffers from low tar yield and poor quality, while hydropyrolysis technology is characterized by complex hydrogen production processes, high costs, harsh activation conditions, and mass transfer problems, resulting in low efficiency.

Method used

A low-temperature plasma-enhanced coal fluidized bed hydropyrolysis device is used. A discharge region is formed in the reaction tube by a low-temperature plasma generator, which activates hydrogen-rich gas to generate low-temperature plasma. The free radicals in the plasma are used to stabilize the free radicals generated during coal pyrolysis and prevent the secondary pyrolysis of tar to generate semi-coke.

Benefits of technology

It improved tar yield and quality, reduced semi-coke formation, lowered energy consumption and operating costs, optimized hydrogen activation and utilization efficiency, matched the optimal temperature range for coal pyrolysis, and enhanced the conversion efficiency and economic value of coal resources.

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Abstract

The application discloses a low-temperature plasma reinforced coal fluidized bed hydrogenation pyrolysis device and method, and belongs to the field of coal pyrolysis technology. The low-temperature plasma reinforced coal fluidized bed hydrogenation pyrolysis device comprises a reaction tube body, a heating furnace, a product collecting device and a low-temperature plasma generator. The lower end of the reaction tube body is provided with a feeding port for hydrogen-rich gas carrying coal powder to enter. The lower end of the product collecting device is connected with the upper end of the reaction tube body in a butt joint mode, and the upper end of the product collecting device is provided with a discharging pipe. The low-temperature plasma generator can form a discharge area in the reaction tube body, and can activate part of the hydrogen-rich gas in the discharge area to generate low-temperature plasma. Free radicals in the low-temperature plasma can stabilize free radicals generated in the coal pyrolysis process. The application can effectively solve the problems of harsh activation conditions and high energy consumption of hydrogen-rich gas in the traditional hydrogenation pyrolysis, effectively reduce the generation of semi-coke, and improve the tar yield.
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