Hydrogen combustion system based on carbon dioxide as cycle fluid

The invention relates to the technical field of hydrogen combustion systems, and discloses a hydrogen combustion system based on carbon dioxide as a cycle fluid. According to the technical scheme, the device comprises a prime mover system device, hydrogen serves as fuel to be combusted in the prime mover system device, high-temperature flue gas is generated after combustion, and the high-temperature flue gas comprises trace oxygen, carbon dioxide and water; the waste heat utilization device, the gas-liquid separator, the flue gas analysis device and the first gas mixer are connected with the prime motor system device, and the first gas mixer is provided with a carbon dioxide and oxygen inlet and used for introducing carbon dioxide and oxygen and mixing the carbon dioxide and the oxygen with separated flue gas so as to adjust the proportion of the oxygen and the carbon dioxide and generate circulating flue gas; and the circulating flue gas is guided into the gas inlet end of the prime mover system device to be