Looping reaction hydrogen production system and hydrogen production method

A looping reaction hydrogen production system, comprising:

• a reduction reaction device in which a metal oxide (MeO) undergoes a reduction reaction with a CO-containing reducing gas generated by a reaction of high-temperature CO2 with a carbon-based fuel to obtain a Me-containing solid product and a CO2-containing gaseous product, wherein Me represents a metal;
• a primary separation device that separates the solid product and the CO2-gaseous product from the reduction reaction device to obtain the Me, carbonous particles, and a CO2-containing reaction product syngas;
• a hydrogen production reaction device that receives the Me from the primary separation device and oxidizes the Me with steam to obtain a MeO-containing solid product and an H2-containing gaseous product;
• a secondary separation device that separates the MeO-containing solid product and the H2-containing gaseous product from the hydrogen production reaction device to obtain the MeO and the H2-containing gaseous product;
• a primary heat transfer device that receives the MeO from the secondary separation device and extraneous MeO, heating, and transporting to the reduction reaction device;
• a cooling purification device that separates the H2-containing gaseous product from the secondary separation device to obtain H2;
• a heat exchanging device connected to the primary separation device and cools the CO2-containing reaction product syngas from the primary separation device and generates a high-temperature water/steam medium,
• wherein a first outlet of the heat exchanging device is connected to a cooling refinement device in which a first portion of the CO2-containing reaction product syngas is processed to obtain CO2, and
• wherein a second outlet of the heat exchanging device is connected to a recirculation compressor in which a second portion of the CO2-containing reaction product syngas is pressurized and heated,
• and a secondary heat transfer device that receives the pressurized and heated CO2-containing reaction product syngas from the recirculation compressor and generates the high-temperature CO2.