A method and system for nh3 / electric-hydrogen-electric conversion

Pure hydrogen is generated by NH3 chemical looping hydrogen production technology to supply PEMFC fuel cells, and unconverted fuel in SOFC fuel cells is used for combustion or combined cycle power generation, which solves the problem of high energy consumption in hydrogen separation and improves the power generation efficiency of ammonia fuel cell power generation system.

CN122166715APending Publication Date: 2026-06-09GUANGDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG UNIV OF TECH
Filing Date
2026-03-09
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The high energy consumption of hydrogen separation in existing ammonia fuel cell power generation systems leads to low power generation efficiency.

Method used

The NH3 chemical chain hydrogen production technology is adopted, which generates pure hydrogen in the reduction and steam reactor through Fe3O4 oxygen carrier, and directly supplies it to the PEMFC fuel cell for power generation. It also utilizes the unconverted fuel of SOFC fuel cell for combustion or combined cycle power generation, avoiding the need for hydrogen separation unit and residual ammonia removal unit, thus achieving high-efficiency energy utilization.

Benefits of technology

It improves the power generation efficiency of PEMFC fuel cells, avoids some of the energy consumption of H2/N2 separation through chemical looping hydrogen production, enhances power generation efficiency, and realizes the cascade utilization of fuel.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention belongs to the field of fuel cell power generation technology, specifically relating to an NH3 / electricity-hydrogen-electricity conversion method and system. This invention produces pure hydrogen that can be directly used in PEMFC fuel cell power generation through NH3 chemical looping hydrogen production technology. Simultaneously, it utilizes an SOFC fuel cell to further convert unconverted fuel from the PEMFC fuel cell and the unconverted fuel from the chemical looping hydrogen production process into electricity. The unconverted fuel from the SOFC fuel cell is then used to burn with high-temperature air to heat the reduction reactor, or the combustion of the unconverted fuel from the SOFC fuel cell with high-temperature air is used to generate electricity through a combined cycle and electrically heat the reduction reactor. Addressing the problems of high hydrogen separation energy consumption and low system power generation efficiency in existing ammonia fuel cell power generation systems, this invention avoids some of the H2 / N2 separation energy consumption through chemical looping hydrogen production, while gradually utilizing unconverted fuel to improve power generation efficiency.
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