Rectification and purification device for producing carbon dioxide

The utility model discloses a rectification purification device for producing carbon dioxide, which comprises an adsorption cylinder, a liquefying box and a base, the liquefying box is fixedly arranged at the top of the base, the adsorption cylinder is fixedly arranged at the top of the liquefying box, a pump body is fixedly arranged on one side of the liquefying box, and the pump body is fixedly arranged on the other side of the liquefying box. And the other side of the liquefying box is movably provided with a double-outer-wire gauge air pressure valve, one side of the pump body is fixedly provided with a rectifying tower, the output end of the rectifying tower is fixedly provided with a cooling box, and the bottom of the cooling box is fixedly provided with a shell. The liquefying box is fixedly arranged at the top of the base, a flange plate can be used for being connected with an external gas conveying pipeline, then an activated carbon adsorption layer is used for filtering and deodorizing carbon dioxid