Development of catalytic combustion and CO2 capture and conversion technology

Abstract

Abstract Changes are needed to improve the efficiency and lower the CO 2 emissions of traditional coal-fired power generation, which is the main source of global CO 2 emissions. The integrated gasification fuel cell (IGFC) process, which combines coal gasification and high-temperature fuel cells, was proposed in 2017 to improve the efficiency of coal-based power generation and reduce CO 2 emissions. Supported by the National Key R&D Program of China, the IGFC for near-zero CO 2 emissions program was enacted with the goal of achieving near-zero CO 2 emissions based on (1) catalytic combustion of the flue gas from solid oxide fuel cell (SOFC) stacks and (2) CO 2 conversion using solid oxide electrolysis cells (SOECs). In this work, we investigated a kW-level catalytic combustion burner and SOEC stack, evaluated the electrochemical performance of the SOEC stack in H 2 O electrolysis and H 2 O/CO 2 co-electrolysis, and established a multi-scale and multi-physical coupling simulation model of SOFCs and SOECs. The process developed in this work paves the way for the demonstration and deployment of IGFC technology in the future.