Carbon dioxide capture equipment

Abstract

The present invention provides a carbon dioxide capture system that can absorb and separate carbon dioxide without using thermal energy, and that can reliably capture the carbon dioxide that needs to be recovered. [Solution] The carbon dioxide recovery equipment 1 of the embodiment comprises an electrolysis device 10 that electrolyzes an alkali metal chloride aqueous solution, an absorption device 20 that absorbs carbon dioxide from a gas containing carbon dioxide using an absorption solution containing an alkali metal hydroxide aqueous solution produced in the electrolysis device 10 to produce a carbon dioxide absorption aqueous solution, a separation device 40 that reacts the carbon dioxide absorption aqueous solution with chlorine gas produced in the electrolysis device 10 to separate carbon dioxide from the carbon dioxide absorption aqueous solution and also produces an alkali metal chloride aqueous solution, and a control device 110 equipped with a current value calculation unit 142 that calculates the current value to be supplied to the electrolysis device 10 based on the flow rate of carbon dioxide introduced into the absorption device 20.

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