Mars surface carbon dioxide trapping and converting system and method thereof

The invention discloses a system and a method for capturing and converting carbon dioxide on the surface of Mars. The carbon dioxide trapping system based on the adsorption principle is designed on the basis of the low-temperature characteristics of the Mars atmosphere, efficient trapping of carbon dioxide in the Mars atmosphere is achieved through the rotating wheel adsorber, Sabatier reaction heat serves as a regenerative heat source of the rotating wheel adsorber, an additional heating system does not need to be arranged, and the cost is low. Efficient coupling of a carbon dioxide capturing system and a conversion system is achieved, and the methane propellant needed by return type Mars exploration can be continuously obtained. A cooling condenser and a water collector which utilize cold energy of atmosphere of Mars are further designed in the system, separation of carbon dioxide and water vapor in regenerated gas is achieved, an additional water vapor adsorber does not need to be arranged, and meanwhile c