Carbon dioxide dewatering and drying system and process

The system comprises an adsorption tower, a first membrane separation device and a gas-water separator, the adsorption tower is provided with an adsorption tower gas inlet and an adsorption tower gas outlet, and the first membrane separation device is provided with a first gas inlet, a first gas outlet and a first water outlet; the first gas outlet is connected with the gas outlet of the adsorption tower through each of a hot gas blowing pipeline and a cold gas blowing pipeline, a polyethylene oxide polymer membrane is arranged in the first membrane separation device, the first water outlet is connected with the first gas inlet through a first circulating pipeline, and the gas-water separator is provided with a regenerated gas inlet, a carbon dioxide outlet and a water outlet. The adsorption tower gas inlet is connected with the regenerated gas inlet through a regeneration pipeline. According to the invention, the investment cost of equipment is reduced, the occupied area is small, the utilization rate of the