| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system and method for recovering a gas which contains CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S, the system and method efficiently recovering H<SB POS="POST">2</SB>S contained in a gasified gas obtained by gasifying coal or the like by a gasifying furnace. <P>SOLUTION: The system for recovering a gas which contains CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S includes: an absorption column 13 which makes a gasified gas, which contains CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S, an introduced gas 11 and makes the introduced gas 11 contact an absorption liquid 12, which absorbs CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S, to absorb the CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S from the introduced gas 11, the gasified gas being obtained by gasifying coal or the like; an absorption liquid-regeneration column 14 which pulls out the absorption liquid 12A, which absorbs the CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S, from the bottom part 13c of the absorption column 13, and introduces the CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S from the top part 14a of the column 13, and then releases the CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S to regenerate the absorption liquid 12; a second feeding line L<SB POS="POST">2</SB>which returns the regenerated absorption liquid 12B from the regeneration column 14 to the absorption column 13; and a third feeding line L<SB POS="POST">3</SB>which pulls out the absorption liquid (semi-rich solution) 12C, which partially absorbs CO<SB POS="POST">2</SB>and H<SB POS="POST">2</SB>S, from the vicinity of the intermediate stage 13b of the absorption column 13, and introduces the semi-rich solution 12C into the vicinity of the intermediate stage 14b of the regeneration column 14. <P>COPYRIGHT: (C)2012,JPO&INPIT |
