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    • 6. 发明申请
    • EXHAUST GAS TREATING APPARATUS AND METHOD
    • 排气处理设备及方法
    • US20100183493A1
    • 2010-07-22
    • US12602420
    • 2008-04-30
    • Katsumi NochiMasashi KiyosawaShintaro Honjo
    • Katsumi NochiMasashi KiyosawaShintaro Honjo
    • B01D53/56B01D53/86
    • B01D53/8625B01D53/64B01D2251/206B01D2251/502B01D2257/30B01D2257/602F23J15/003F23J15/02F23J2215/10F23J2215/60
    • An exhaust gas treating apparatus removes nitrogen oxides and mercury in an exhaust gas from a boiler by use of an ammonia denitration catalyst, the exhaust gas treating apparatus including: an ammonium chloride powder feed unit 101 for feeding ammonium chloride, in powder form, into any one of or both of a vicinity of an entrance of an economizer 15 provided to a combustion gas flue of the boiler and an economizer bypass unit 15a, the fed ammonium chloride in powder form being sublimed by a combustion gas, to thereby feed hydrogen chloride and ammonia into the flue 102; and an ammonium chloride liquid feed unit 110 for feeding ammonium chloride, in liquid form, into any one of or both of a vicinity of the entrance of the economizer 15 and the economizer bypass unit 15a, the ammonium chloride liquid feed unit 110 also being capable of feeding ammonium chloride, vaporization of the fed ammonium chloride in liquid form by the combustion gas also allowing hydrogen chloride and ammonia to be fed into the flue 102.
    • 废气处理装置通过使用氨脱硝催化剂从锅炉除去来自锅炉的废气中的氮氧化物和汞,该废气处理装置包括:将粉末状的氯化铵供给到粉末状的氯化铵粉末供给单元101 提供给锅炉的燃烧气体烟道的节能器15的入口附近的一个或两个以及经济器旁路单元15a,由燃烧气体升华的粉末形式的进料氯化铵,从而进料氯化氢和 氨进入烟道102; 以及用于将液体形式的氯化铵供给到节能器15和节能器旁路单元15a的入口附近的任意一个或两个的氯化铵液体供给单元110,氯化铵液体供给单元110也能够 进料氯化铵,通过燃烧气体将液体形式的进料氯化铵蒸发,同时还允许将氯化氢和氨进料到烟道102中。
    • 9. 发明申请
    • Flue gas denitration catalyst and preparation process thereof
    • 烟气脱硝催化剂及其制备方法
    • US20050054523A9
    • 2005-03-10
    • US10705365
    • 2003-11-10
    • Shigeru NojimaKozo IidaYoshiaki ObayashiKatsumi NochiMasashi Kiyosawa
    • Shigeru NojimaKozo IidaYoshiaki ObayashiKatsumi NochiMasashi Kiyosawa
    • B01D53/94B01D53/86B01J23/00B01J23/30B01J35/04B01J37/02
    • B01D53/8631B01D53/8628B01J23/002B01J23/30B01J35/04B01J37/0238
    • Provided are a flue gas denitration catalyst having high denitration activity and capable of suppressing a side reaction, that is, oxidation of SO2; and a preparation process of the catalyst. The flue gas denitration catalyst comprises TiO2, WO3 and V2O5. In the surface layer of the catalyst within 200 μm from the surface thereof, V2O5 is supported on a carrier containing TiO2 and WO3. The supported amounts of V2O5 range from 0.4 to 5 wt. % based on the weight of the surface layer and range from 0.1 to 0.9 wt. % based on the total weight of the catalyst. The V2O5 thus supported has a crystallite size of less than 10 nm as measured by X-ray diffraction. The catalyst can be available by preparing a mixture containing TiO2 and WO3 and having V2O5 supported on the surface of an extruded product of the prepared mixture by a vapor phase method. The catalyst can be also available by having V2O5 supported on a powder of the prepared mixture by a vapor phase method and having the resulting powder supported on the surface of a formed product.
    • 本发明提供一种脱硝活性高,能够抑制副反应即SO2氧化的烟道气脱硝催化剂。 和催化剂的制备方法。 烟气脱硝催化剂包括TiO 2,WO 3和V 2 O 5。 在催化剂的表面200μm以内的表面层中,将V 2 O 5负载在含有TiO 2和WO 3的载体上。 V2O5的负载量为0.4〜5wt。 %,基于表层的重量,为0.1-0.9wt。 %,基于催化剂的总重量。 如此支持的V 2 O 5通过X射线衍射测得的微晶尺寸小于10nm。 催化剂可以通过制备含有TiO 2和WO 3的混合物并且通过气相法将V 2 O 5负载在所制备的混合物的挤出产品的表面上来获得。 催化剂也可以通过使V 2 O 5通过气相法在制备的混合物的粉末上负载并将所得粉末负载在成形产品的表面上来获得。