Integrated gasification fuel cell(IGFC) power generation technology is a clean and efficient green coal power technology

which can be combined with CO_2 capture technology to achieve CO_2 capture of high efficiency and get ready for the subsequent utilization and storage. This paper introduces the overall process of IGFC system

including coal gasification

syngas purification

fuel cell power generation

exhaust gas combustion and waste heat recovery system. Researches on coal gasification and syngas purification units

fuel cell power generation units and overall process simulation of IGFC were summarized. Moreover

researches and development on IGFC technology and demonstration of plants in Japan

the United States and China were introduced. Furthermore

the key problems that the IGFC technology research and development needs to solve were summerized

including large power fuel cells in the long period operation

syngas purification in medium temperature and catalytic combustion technology of exhaust gas in pure oxygen. The research can provide guidance for the subsequent development and demonstration of MW-level IGFC systems.