| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flue gas desulfurization apparatus allowing enhancement of desulfurization performance of a position of an inlet duct introducing exhaust gas from a boiler furnace in time of both oxygen combustion and air combustion, and to provide an oxygen combustion system using the same. <P>SOLUTION: The inlet duct 1 for the exhaust gas provided on the upstream side of spray nozzles of this desulfurization apparatus 3 is divided into an upper inlet duct 30 and a lower inlet duct 31, a first porus plate 32 is provided over the whole cross section of an exhaust gas flow passage between the upper inlet duct 30 and the lower inlet duct 31, dumpers 34, 35 changing over the exhaust gas supplied to the two inlet ducts 30, 31 are provided, a second porus plate 33 is added on the downstream side of the upper inlet duct 30 and on the upstream side of the spray nozzles in some cases, and the exhaust gas is supplied into the flue gas desulfurization apparatus 3 from the upper inlet duct 30 in time of the air combustion and from the lower inlet duct 31 in time of the oxygen combustion to enhance SO<SB POS="POST">2</SB>removal performance. <P>COPYRIGHT: (C)2013,JPO&INPIT |
