A device for preparing green aviation coal by circulating fluidized bed gasification-fischer-tropsch synthesis

By combining a circulating fluidized bed gasifier with a cyclone separator, solid particles are captured and recycled multiple times. Combined with medium-temperature conversion and green hydrogen supplementation, the problems of catalyst deactivation and equipment slagging in biomass gasification-Fischer-Tropsch synthesis are solved, and efficient green jet fuel production is achieved.

CN122352149APending Publication Date: 2026-07-10XINJIANG TECH INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XINJIANG TECH INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Filing Date
2026-03-26
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In the existing biomass-based gasification-Fischer-Tropsch synthesis technology route, high tar content leads to rapid catalyst deactivation, alkali metals and chlorine elements cause equipment slagging and corrosion, and hydrogen-carbon ratio instability affects synthesis efficiency, resulting in system instability and inefficiency.

Method used

A circulating fluidized bed gasifier combined with a cyclone separator is used to capture solid particles and recycle them multiple times. The hydrogen-to-carbon ratio of the syngas is adjusted through medium-temperature conversion and green hydrogen supplementation. Energy utilization is optimized by combining an energy integration network. A pretreatment modification system is used to adjust the ash melting characteristics of biomass, thereby achieving efficient regulation of syngas and energy recovery.

Benefits of technology

Significantly improves carbon conversion rate, avoids equipment slagging, ensures stable operation, adjusts the hydrogen-to-carbon ratio of syngas to the optimal range, improves Fischer-Tropsch synthesis efficiency, and achieves low-carbon jet fuel production throughout its entire life cycle.

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Abstract

The application provides a device for preparing green aviation coal by circulating fluidized bed gasification-Fischer-Tropsch synthesis, and relates to the technical field of green aviation coal preparation. In the device, a circulating fluidized bed reactor gasifies provided biomass to generate first synthesis gas; a cyclone separator separates solid particles carried in the first synthesis gas, sends the solid particles back to the circulating fluidized bed reactor, and sends the first synthesis gas after separation of the solid particles into a medium-temperature shift system; the medium-temperature shift system shifts the first synthesis gas at a medium temperature to adjust the hydrogen-carbon ratio of the first synthesis gas for the first time; a mixer mixes the first synthesis gas after the medium-temperature shift with hydrogen to adjust the hydrogen-carbon ratio of the first synthesis gas for the second time, and obtains second synthesis gas; a synthesis adjustment system adjusts the second synthesis gas; a Fischer-Tropsch synthesis reactor performs Fischer-Tropsch synthesis reaction on the second synthesis gas to obtain a hydrocarbon mixture; a fractionation system fractionates the hydrocarbon mixture to obtain heavy components; and a hydrogenation isomerization cracking system performs hydrogenation isomerization cracking treatment on the heavy components to obtain green aviation coal.
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