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    • 2. 发明公开
    • FLUIDIZED-BED INCINERATOR AND METHOD OF FLUIDIZED-BED INCINERATION OF SLUDGE WITH THE SAME
    • FLÜSSIGBETT-VERBRENNUNGSANLAGE UND VERFAHREN ZURFLÜSSIGBETTVERBRENNUNGVON SCHLAMM DAMIT
    • EP2206953A4
    • 2017-05-03
    • EP08847437
    • 2008-11-06
    • METAWATER CO LTD
    • YAMADA MASAKIYANASE TETSUYAYAMAMOTO MASAYUKITAKESHITA TOMOYUKIKAMIYA KOSUKE
    • F23G5/30F23C10/20F23G7/04
    • F23G5/50F23G5/30F23G7/001F23G2202/101F23G2203/502F23G2207/30F23G2207/60F23G2900/50007F23G2900/54402F23J2215/101
    • An inside of an incinerator body 1 into which sludge is fed is divided into a lower portion, a portion above the lower portion, and a top portion in a height direction. The lower portion serves as a pyrolysis zone 3 for supplying fluidizing air having an air ratio of 1.1 or less together with fuel to thermally decompose the sludge while fluidizing the sludge. The portion above the lower portion serves as an over bed combustion zone 4 for supplying only combustion air having an air ratio of 0.1 to 0.3 to form a local high temperature place to decompose N 2 O. The top portion serves as a perfect combustion zone 5 for perfectly combusting unburned contents. The quantity of N 2 O generated during sludge incineration can be drastically reduced while maintaining the use quantity of auxiliary fuel at the same level as that of a conventional incineration method. When an auxiliary fuel reaction zone 10 for supplying only the auxiliary fuel between the pyrolysis zone 3 and the bed upper combustion zone 4 to decompose N 2 O is formed, the quantity of N 2 O generated can be further reduced.
    • 供给污泥的焚烧炉主体1的内部在高度方向上分为下部,下部以及上部。 下部作为将空气比为1.1以下的流动空气与燃料一起供给的热解区域3,在使污泥流动的同时使污泥热分解。 下部以上的部分用作整个床燃烧区4,用于仅供给空气比为0.1至0.3的燃烧空气以形成局部高温以分解N 2 O.顶部用作完全燃烧区5 完美燃烧未燃烧的内容。 污泥焚烧过程中产生的N 2 O的量可以大幅减少,同时将辅助燃料的使用量保持在与传统焚化方法相同的水平。 当仅在热解区3和床上部燃烧区4之间提供用于分解N 2 O的辅助燃料反应区10时,可以进一步减少产生的N 2 O的量。