Pressure swing adsorption carbon dioxide recovery device

The utility model relates to the field of carbon dioxide recovery, in particular to a pressure swing adsorption carbon dioxide recovery device which comprises a discharge chimney, a guide pipe assembly is arranged at the top of the discharge chimney, one end, away from the discharge chimney, of the guide pipe assembly is in butt joint with a pretreatment device, and a flow dividing assembly is arranged at the top of the guide pipe assembly. The top end of the shunting assembly is connected with a carbon dioxide sensor through a wire. The guide pipe assembly is arranged at the top of the discharge chimney to guide waste gas discharged from the discharge chimney, the carbon dioxide sensor is matched to detect the waste gas discharged from the discharge chimney, and when the content is detected to be too high, the electrifying unit is started to drive the baffle to block the second branch pipe, so that the waste gas is discharged from the discharge chimney. And the first branch pipe is opened, so that the effect