| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fluidized-bed processing system that can greatly reduce nitrous oxide (N<SB POS="POST">2</SB>O) content in a combustion exhaust gas discharged out of facilities, and a method of removing N<SB POS="POST">2</SB>O in the fluidized-bed combustion exhaust gas. <P>SOLUTION: This fluidized-bed processing system includes: a circulation fluidized-bed boiler 11 that performs fluidized-bed combustion processing of fuel F (biomass fuel F<SB POS="POST">1</SB>, coal fuel F<SB POS="POST">2</SB>petroleum coke fuel F<SB POS="POST">3</SB>), a heat transfer part 13 that collects heat of combustion exhaust gas 12 discharged from the circulation fluidized-bed boiler 11, an air preheater 15 disposed on the slipstream side of the heat transfer part 13 for preheating air 14 to be supplied to the circulation fluidized-bed boiler 11, a bag filter 16 (or a dust collector) disposed on the slipstream side of the air preheater 15 for removing dust in the combustion exhaust gas 12, at least one or more superheaters (superheater 13<SB POS="POST">a1</SB>, 13<SB POS="POST">a2</SB>) for the heat transfer part 13, and at least one or more coal economizers (coal economizers 13<SB POS="POST">b1</SB>, 13<SB POS="POST">b2</SB>); and in addition at least one or more first still standing catalyst parts 17 in the heat transfer part 13, which removes N<SB POS="POST">2</SB>O in the combustion exhaust gas 12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
