Disc type photo-thermal and biomass energy coupling hydrogen production system and hydrogen production method

The invention discloses a disc-type photo-thermal and biomass energy coupling hydrogen production system and a hydrogen production method. The disc-type photo-thermal and biomass energy coupling hydrogen production system comprises a disc-type light condensation and heat collection system, a high-temperature fused salt storage tank, a low-temperature fused salt storage tank, a tail gas purification device, a biomass gasifier, a gasified gas reforming tower, a hydrogen purification tower, an impurity gas burner, a fused salt reheating device, a spiral feeding device and a chimney. A plurality of disc-type light-gathering heat-collecting modules form a disc-type light-gathering heat-collecting system, molten salt is heated through the light-gathering heat-collecting system, heat is provided for biomass gasification, and heat transfer and mass transfer are enhanced through high-temperature molten salt indirect heat exchange, spiral heating tube bundle arrangement, molten salt reheating, a circulating fluidized b