| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a recovery method and recovery equipment of a CO<SB>2</SB>gas in which a heat source in a cement manufacturing facility is effectively used, and thereby the CO<SB>2</SB>gas generating in the cement equipment can be separated and collected at the high concentration. <P>SOLUTION: The recovery method comprises as follows. A cement raw material before calcination extracted from a preheater 3 of a cement manufacturing facility is supplied to a mixing calciner 12, and a part of a hot cement clinker discharged from a cement kiln 1 is introduced into the mixing calciner 12, thereby holding the inside of the mixing calciner 12 at higher than a calcination temperature and calcining the cement raw material before the calcination, thereafter at least the cement raw material is returned to the preheater 3 or cement kiln 1, and the CO<SB>2</SB>gas generated in the mixing calciner 12 is collected. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
