发明名称 |
EXHAUST GAS TREATMENT SYSTEM AND EXHAUST GAS TREATMENT METHOD |
摘要 |
Provided is an air pollution control system including: a denitration apparatus 12 that is configured to remove nitrogen oxides in a flue gas 18 discharged from a boiler 11; an air heater 13 that is configured to recover heat of the flue gas 18 after denitration; a precipitator 14 that is configured to remove soot and dust contained in the flue gas after heat recovery in the form of collected dust ash 16; a desulfurization apparatus 15 that is configured to remove sulfur oxides contained in the flue gas 18 after dust removal using limestone slurry 20 which is an absorbent; a dehydrator 32 that is configured to remove gypsum 31 from absorber slurry discharged from the desulfurization apparatus 15; a spray drying apparatus 50 provided with a spray unit that is configured to spray dehydrated filtrate 33 as desulfurization wastewater supplied from the dehydrator 32; a flue gas introduction line L 11 through which a branch gas 18a branched from the flue gas 18 is introduced to the spray drying apparatus 50; a flue gas supply line L 12 through which flue gas 18b returns to a main flue gas duct, the flue gas 18b being obtained after the dehydrated filtrate is dried by the spray drying apparatus; and a powder supply apparatus 60 that is configured to supply a powder 61 to the flue gas introduction line L 11 . |
申请公布号 |
EP2959959(A1) |
申请公布日期 |
2015.12.30 |
申请号 |
EP20130875542 |
申请日期 |
2013.11.18 |
申请人 |
MITSUBISHI HITACHI POWER SYSTEMS, LTD. |
发明人 |
FUKUDA, TOSHIHIRO;KAGAWA, SEIJI;SATOU, JUN;OKINO, SUSUMU |
分类号 |
B01D53/50;B01D1/18;B01D53/77;C02F11/12;F23J15/00;F26B3/12 |
主分类号 |
B01D53/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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