Apparatus and method for co-production of bio-jet fuel and porous carbon from biomass pyrolysis with cascading catalytic activation

By using a stepwise catalytic activation method based on biomass pyrolysis, combined with a metal-acid bifunctional catalyst and plasma activation technology, the problems of easy polymerization of highly active oxygen-containing macromolecules and poor porosity of carbon materials in biomass catalytic pyrolysis have been solved, achieving the effect of efficient preparation of aviation fuel precursors and porous carbon.

CN120248919BActive Publication Date: 2026-07-03SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Filing Date
2025-03-19
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing biomass catalytic pyrolysis technologies suffer from problems such as the easy polymerization and coking of highly active oxygen-containing macromolecules, poor pore structure of carbon materials, and lack of effective correlation between pyrolysis and catalytic conversion devices, resulting in low yields of aromatics and carbon materials, making large-scale application difficult.

Method used

A step-by-step catalytic activation method based on biomass pyrolysis is adopted, including a pyrolysis catalytic bond breaking unit, a pyrolysis gas reforming unit, and an oxygen-enriched carbon material activation unit. By utilizing metal-acid bifunctional catalysts and plasma activation technology, multi-stage conversion of biomass is achieved to prepare high-quality aviation fuel precursors and porous carbon.

Benefits of technology

It improves the quality of aromatic aviation fuel and the performance of porous carbon, and solves the problems of low effective hydrogen-to-carbon ratio of biomass and severe high-temperature condensation of primary pyrolysis products in traditional technologies, thus realizing the production of high-yield aviation fuel precursors and oxygen-rich porous carbon.

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Abstract

The application discloses a device and method for producing aviation oil and porous carbon by biomass pyrolysis and catalytic activation in stages, and the device comprises a pyrolysis and catalytic bond-breaking unit, a pyrolysis gas reforming unit and an oxygen-rich carbon material activation unit. By coupling the three units, biomass is first pyrolyzed and catalytically broken to make high-activity oxygen-containing macromolecules enriched into small-molecule thermal-stable intermediates matched with the pore channels of a reforming catalyst, and then the intermediates are catalytically reformed to prepare aviation oil precursors; the non-condensable gas generated in the pyrolysis and reforming processes is used to activate biochar to prepare oxygen-rich porous carbon material and produce hydrogen-rich gas, so that the hydrogen-rich gas enters a pyrolysis and catalytic fluidized bed to participate in bond-breaking and deoxidization. Through the collaborative design of the multiple units, the problems of hydrogen deficiency in traditional biomass pyrolysis, poor carbon material quality and rapid coking of a reforming catalyst and the like can be solved, high-yield aviation oil precursors and oxygen-rich porous carbon material can be obtained, and by-products generated in the device can also be fully utilized, thereby improving the process economy.
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