Carbon dioxide recovery device

A carbon dioxide recovery device that is configured to separate and recover carbon dioxide from a subject gas which contains the carbon dioxide, the carbon dioxide recovery device comprising:

• an adsorption unit that includes a plurality of electrochemical cells which are stacked in a cell stacking direction, wherein each of the plurality of electrochemical cells includes:
• a working electrode that is configured to adsorb the carbon dioxide from the subject gas and also desorb the carbon dioxide through an electrochemical reaction;
• and
• a counter electrode that is configured to transfer an electron between the counter electrode and the working electrode;
• a receiver that receives the adsorption unit;
• a plurality of gas inlets, each of which is provided to the receiver and is configured to introduce the subject gas into the receiver;
• and
• a plurality of doors, each of which is configured to open and close a corresponding one of the plurality of gas inlets and includes:
• a base plate that is configured to cover the corresponding one of the plurality of gas inlets;
• and
• a support coupler that is configured to support the base plate relative to the receiver, wherein:
• the plurality of gas inlets are respectively configured to introduction of the subject gas into the receiver in a corresponding direction perpendicular to the cell stacking direction of the plurality of electrochemical cells and are configured to introduce the subject gas into the receiver from all around the receiver along a circumferential direction of the receiver that is perpendicular to the cell stacking direction of the plurality of electrochemical cells.