Co2 recovery method and co2 recovery device

Abstract

Provided is a CO2 recovery method including: a heat exchange step of exchanging heat between water and a CO2-containing target gas having a temperature of 100° C. or more to lower the temperature of the target gas to less than 100° C. and to generate water vapor from the water; an adsorption step of adsorbing, on an adsorbent, CO2 in the target gas, the temperature of which has been lowered by the heat exchange step; a detachment step of detaching the CO2 from the adsorbent by contacting the water vapor obtained in the heat exchange step with the adsorbent having the CO2 adsorbed by the adsorption step, to transfer the CO2 into the water vapor; and a separation step of separating the CO2 from the CO2-containing water vapor obtained in the detachment step.

Dependencies are inferred from the claim text.