热化学循环耦合化学链循环除氧的多能联产系统

As concerns about climate change continue to grow, the conundrum of how to produce carbon-neutral fuel needs to be addressed. This paper proposes a multi-energy co-generation system with solar thermochemical cycle based on chemical-looping cycle oxygen removal, which uses chemical-looping cycle to absorb oxygen generated by thermochemical cycle to improve the reduction degree of oxygencarrier Through the combined cooling, heating and power system, the high-temperature thermal energy generated by chemical-looping cycle is utilized in a cascade manner to output electricity, cold energy and low-grade thermal energy. The results show that NiO/Ni is more suitable as oxygencarrier in chemical-looping cycle. When the pressure ratio of chemical-looping cycle is 5 and the thermal chemical cycle reduction temperature is 1500^◦C, the solar utilization efficiency and exergy efficiency reached 28.5% and 23.5% respectively, and when the reduction temperature rose to 1600^◦C, these efficiencies rose to 32.2% and 25.5% respectively. The use of multi-energy cogeneration system can save 57.4% of methane and reduce carbon emissions. Theoretical calculation shows that if the energy supply of the multi-energy cogeneration system is completely relied on, the annual energy consumption per capita of Beijing and Shanghai residents needs 12.1 m² and 7.3 m² of concentrating area.