COMBINED POWER GENERATION SYSTEM

摘要

PURPOSE: A composite power generating system is provided to have a relatively high efficiency and a relatively high carbon dioxide capturing rate by connecting a natural gas synthesis device and a fuel battery device. CONSTITUTION: A composite power generating system comprises a natural gas synthesis device that generates a synthetic gas from a gasifier (110) using coal and oxygen and synthesizes methane through a methanation reactor (160); a fuel battery device (200) that generates electric energy from a methane-containing fuel supplied from the natural gas synthesis device; and a power generating device that generates electric energy by using the fluid discharged from the fuel battery device. The natural gas synthesis device further comprises a first reactor (140) that produces hydrogen and carbon dioxide through water gas shift reaction and a second reactor (150) that separates carbon dioxide and a sulfide through physical and chemical separation.