| 摘要 |
PROBLEM TO BE SOLVED: To efficiently recover, in the separation of blast furnace gas into gases mainly composed of respective components, each gas at high recovery rate.SOLUTION: In the separation of a blast furnace gas into gases mainly composed of respective components by use of three stages of gas separation and refinement apparatuses, the blast furnace gas is separated into a gas including COand unavoidable impurity gas components (hereinafter, referred to as "impurity gas") and a gas including N, CO, Hand an impurity gas by a first stage gas separation and refinement apparatus (S1), the gas including N, CO, Hand the impurity gas which is separated by the first stage gas separation and refinement apparatus is separated into a gas including Nand the impurity gas, a gas including CO and the impurity gas, and a gas including H, Nand the impurity gas by a second stage gas separation and refinement device (S2), and a gas including Hand the impurity gas is separated from the gas including H, Nand the impurity gas, which is separated by the second stage gas separation and refinement apparatus, by a third stage separation and refinement apparatus (S3). |
