Gas mixture separation system and gas mixture separation method

The embodiment of the invention relates to a mixed gas separation system and a mixed gas separation method, the mixed gas separation system comprises a gas circulation pipeline, a first adsorption bed, a second adsorption bed, a third adsorption bed and a plurality of switch valves, and the plurality of switch valves are arranged to enable mixed gas to enter the system after the mixed gas enters the system. Two of the first adsorption bed, the second adsorption bed and the third adsorption bed are used for adsorbing mixed gas, the other adsorption bed is used for desorbing, and desorbed gas is discharged out of the system from a desorbed gas outlet of the gas circulation pipeline. By means of the system, the usage amount of alloy powder in the adsorption bed can be reduced, the powder utilization rate is increased, and the production cost is reduced. 本申请的实施例涉及混合气分离系统以及混合气分离方法，其包括：气体流通管路、第一吸附床、第二吸附床、第三吸附床以及多个开关阀，多个开关阀被设置成使得混合气进入到系统后，第一吸附床、第二吸附床、第三吸附床中的两个对混合气进行吸附，剩余一个吸附床解吸，解吸气体由所述气体流通管路的解吸气体出口排出系统。通过本申请的系统，可以降低