Future of efficient power generation: Innovative systems combining chemical looping gasification and solid oxide fuel cell.

Abstract

As urbanization accelerates, the substantial increase in municipal solid waste (MSW) presents significant challenges for effectively managing and converting this waste into renewable energy. This paper explores an innovative system that integrates chemical looping gasification (CLG) and solid oxide fuel cell (SOFC) technologies to achieve efficient power generation. The SOFC system operates at 3 bar and 900 °C, with a power generation capacity of 9.3 MW and an efficiency of 57%. The accompanying cryogenic air separation system consumes 4.177 MW and produces 99.52% pure oxygen at a rate of 25,000 kg/h. Additionally, a dual-pressure reheating cycle waste heat boiler generates steam at 80 °C with a flow rate of 45,500 kg/h, providing 6.326 MW of power. Through optimization of each component, the overall system efficiency reaches 55.53%, with CO₂ concentration in the exhaust exceeding 92.94%, achieving nearly zero carbon emissions. The system also generates nitrogen and industrial/domestic water, offering new solutions for urban waste management and renewable energy utilization, thereby advancing the achievement of sustainability goals.