| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for efficiently separating and recovering carbon dioxide gas from a by-product gas discharged from an iron mill.SOLUTION: When a by-product gas Cdischarged from an iron mill is introduced into adsorption columns 1 to 3 charged with an adsorbent, carbon dioxide in a blast furnace gas Cis adsorbed on the adsorbent, and the carbon dioxide adsorbed on the adsorbent is desorbed and recovered by reducing the internal pressure of the adsorption columns 1 to 3, prior to introducing the blast furnace gas Cinto the adsorption columns 1 to 3, carbon monoxide gas contained in the blast furnace gas Cis burned. |
