| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a treatment technique of an exhaust combustion gas, which can use unburned carbon as an alternative of powder active carbon while suppressing cost increases. <P>SOLUTION: This is the treatment technique of the exhaust combustion gas to purification-treat the exhaust combustion gas from a furnace 3 carrying out a combustion of powdered fuel. After the powdered fuel is burned in a combustion furnace 7 in which the fuel burns for a time shorter than the time when the powdered fuel burns out, the combustion gas produced by the combustion is cooled by a cooling means 11, ashes containing the unburned carbon content accompanying the cooled combustion gas are conveyed to the upstream side of a recovery means 15 by conveying means 21, 25, and recovered by the recovery means 15. The exhaust combustion gas produced by the combustion of the powdered fuel at the furnace 3 is treated by the unburned carbon recovered by the recovery means 15. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
