| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a separation method for blast furnace gas capable of efficiently recovering each gas in the separation of blast furnace gas into gases mainly composed of respective components. <P>SOLUTION: In the separation method for blast furnace gas, when separating the blast furnace gas discharged from a blast furnace top into gases mainly composed of components by using a two-stage gas separation purifying device, the blast furnace gas is separated into a gas comprising carbon dioxide and unavoidable impurity gas components, and a gas comprising nitrogen, a carbon monoxide, and unavoidable impurity gas components by the first stage gas separation purifying device S1, and the gas comprising nitrogen, the carbon monoxide, and the unavoidable impurity gas components separated by the first stage gas separation purifying device is separated into a gas comprising nitrogen and unavoidable impurity gas components, and gas comprising a carbon monoxide and unavoidable impurity gas components by the second stage gas separation purifying device S2. <P>COPYRIGHT: (C)2009,JPO&INPIT |
