CARBON-DIOXIDE RECOVERY APPARATUS, AND CARBON-DIOXIDE RECOVERY METHOD

摘要

In regenerating carbon dioxide capturing material, the amount of regeneration gas supplied to a carbon dioxide recovery column is reduced for higher energy efficiency and shortened regeneration time. A carbon dioxide recovery apparatus includes a carbon dioxide sorbing column, a heating unit, and first, second, and third channels. The carbon dioxide sorbing column contains a carbon dioxide capturing material. The heating unit heats the carbon dioxide capturing material. A carbon-dioxide-containing gas is introduced via the first channel into the carbon dioxide sorbing column. The regeneration gas is introduced via the second channel into the carbon dioxide sorbing column. A gaseous mixture containing a gas desorbed from the carbon dioxide capturing material is recovered via the third channel. The heating unit preheats the carbon dioxide capturing material, and then the regeneration gas is introduced into the carbon dioxide sorbing column to recover carbon dioxide from the carbon dioxide capturing material.

主权项

1. A carbon dioxide recovery apparatus comprising:
a carbon dioxide sorbing column that contains a carbon dioxide capturing material; a heating unit that heats the carbon dioxide capturing material; a channel that introduces a carbon-dioxide-containing gas into the carbon dioxide sorbing column; a channel that introduces a regeneration gas into the carbon dioxide sorbing column; and a channel that recovers a gaseous mixture containing a gas desorbed from the carbon dioxide capturing material, wherein the heating unit preheats the carbon dioxide capturing material, and, after the preheating, the regeneration gas is introduced into the carbon dioxide sorbing column to recover carbon dioxide from the carbon dioxide capturing material.