A fixed-bed reactor for lignin pyrolysis

CN224271118UActive Publication Date: 2026-05-26JIMEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIMEI UNIV
Filing Date
2025-05-29
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing lignin pyrolysis equipment lacks gas-liquid coupling control and a high-temperature catalytic platform, making it impossible to complete the entire process of pyrolysis-deoxygenation-reconstruction-coupling in a single device. The product distribution is unstable, which limits the experimental conversion efficiency and the possibility of industrial scale-up.

Method used

The gas supply unit and liquid feed unit are used to control the input of gaseous and liquid raw materials respectively. Combined with a two-stage heating reaction design, the synchronous and precise supply of gaseous and liquid raw materials and reaction control are achieved through a plunger pump and a vaporizer. High-temperature resistant quartz tubes and catalytic beds are used to improve reaction efficiency.

Benefits of technology

It achieves high controllability of the reaction process, stable product distribution, is suitable for experimental platforms, has good adjustability and safety, and facilitates product analysis.

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Abstract

This utility model relates to a fixed-bed reactor for lignin pyrolysis, comprising a gas supply unit, a liquid feed unit, a plunger pump, a vaporizer, a first heating furnace, a second heating furnace, and a gas-liquid separator. The gas supply unit is connected to the first heating furnace, the liquid feed unit is connected to the plunger pump, the output end of the plunger pump is connected to the inlet of the vaporizer, and the outlet of the vaporizer is sequentially connected to the first and second heating furnaces. The second heating furnace is connected to the gas-liquid separator. This device can achieve rapid or slow pyrolysis of lignin in an inert gas atmosphere and, with the aid of a catalyst bed, complete selective deoxygenation and coupling reconstruction reactions at high temperatures, providing an experimental basis for the research and preparation of green aviation fuel.
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Citation Information

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