Abstract:
A carbon dioxide separation recovery method includes: bringing a particulate carbon dioxide adsorbent and a treatment target gas containing carbon dioxide into contact with each other to make the carbon dioxide adsorbent adsorb the carbon dioxide contained in the treatment target gas; and bringing the carbon dioxide adsorbent which has adsorbed the carbon dioxide and superheated steam into contact with each other to desorb the carbon dioxide from the carbon dioxide adsorbent and thereby regenerate the carbon dioxide adsorbent, and recovering the desorbed carbon dioxide. A saturation temperature of the superheated steam which is brought into contact with the carbon dioxide adsorbent is not more than a temperature of the carbon dioxide adsorbent which contacts the superheated steam. The regenerated carbon dioxide adsorbent is utilized for adsorption of the carbon dioxide again without being subjected to a drying step.
Abstract:
A carbon dioxide collection and utilization system including: a regeneration unit that produces, from a solid material in or on which carbon dioxide is absorbed or adsorbed, a gas containing the carbon dioxide, and regenerates the solid material; a reactor into which the gas containing the carbon dioxide produced in the regeneration unit and hydrogen are introduced and which produces steam and at least one selected from the group consisting of synthetic fuel, methane, and methanol; and a steam introduction line that introduces at least part of the steam produced in the reactor, into the regeneration unit.
Abstract:
Disclosed are a carbon dioxide separating material comprising a polyamine carrier in which a polyamine having at least two isopropyl groups on one or more of the nitrogen atoms is loaded on a support, and a method for separating or recovering carbon dioxide using the carbon dioxide separating material.