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61. 发明授权

US06276287B1 Iron compound catalyst for inhibiting generation of dioxin and incineration process of municipal solid waste using the same 失效
标题翻译：用于抑制二恶英产生的铁化合物催化剂和使用其的城市固体废物的焚烧处理
公开(公告)号：US06276287B1
公开(公告)日：2001-08-21
申请号：US09303405
申请日：1999-05-03
申请人： Tomoyuki Imai , Toshiki Matsui , Yasuhiko Fujii , Satoshi Hatakeyama , Kojiro Tsutsumi , Tomoko Okita , Hiroshi Inoue , Tatsuaki Baba , Masaki Ishihara , Takashi Okamura
发明人： Tomoyuki Imai , Toshiki Matsui , Yasuhiko Fujii , Satoshi Hatakeyama , Kojiro Tsutsumi , Tomoko Okita , Hiroshi Inoue , Tatsuaki Baba , Masaki Ishihara , Takashi Okamura
IPC分类号： F23B700
CPC分类号： B01J23/745 , B01D53/8662
摘要： An iron compound catalyst for inhibiting the generation of dioxin of the present invention, comprise iron oxide particles, iron oxide hydroxide particles or mixed particles thereof having a catalytic activity capable of converting not less than 15 % of carbon monoxide into carbon dioxide when 2.8×10−4 mol of iron oxide particles obtained by heat-treating said iron compound catalyst in air at a temperature of 800° C. for 15 minutes, are instantaneously contacted with 6.1×107 mol of carbon monoxide at a temperature of 250° C. at a space velocity (SV) of 42,400 h−1 in an inert gas atmosphere using a pulse catalytic reactor, the iron oxide particles or said iron oxide hydroxide particles having an average particle size of 0.01 to 2.0 &mgr;m, a BET specific surface area of 0.2 to 200 m2/g, a phosphorus content of not more than 0.02 % by weight, a sulfur content of not more than 0.6 % by weight and a sodium content of not more than 0.5 % by weight. Such an iron compound catalyst enables complete combustion of the municipal solid waste and decomposition of dioxin precursors even at a low combustion temperature in intermittently operated incinerators such as mechanical batch incinerators or semi-continuous incinerators, and can inhibit the generation of dioxin due to a memory effect upon low-temperature combustion at the start-up or shut-down of the incinerators, without large-scale incinerator renovation or plant and equipment investment.
摘要翻译：用于抑制本发明的二恶英的产生的铁化合物催化剂包含具有能够将不少于15％的一氧化碳转化为二氧化碳的催化活性的氧化铁颗粒，铁氧化物氢氧化物颗粒或其混合颗粒，当2.8×10 -3时，在800℃的空气中将所述铁化合物催化剂热处理15分钟获得的4摩尔氧化铁颗粒在空气中在250℃的温度下与6.1×10 7摩尔一氧化碳瞬时接触使用脉冲催化反应器的惰性气体气氛中的4200h-1的速度（SV）为4200h -1，平均粒径为0.01〜2.0μm的氧化铁粒子或氧化铁氢氧化物粒子，BET比表面积为0.2〜200 m 2 / g，磷含量不大于0.02重量％，硫含量不大于0.6重量％，钠含量不大于0.5重量％。这种铁化合物催化剂即使在间歇操作的焚烧炉例如机械分批焚化炉或半连续焚烧炉中的低燃烧温度下也可以完全燃烧城市固体废物和二恶英前体的分解，并且可以抑制由记忆产生的二恶英对焚化炉启动或关闭时的低温燃烧产生影响，无需大型焚化炉更新或设备投资。

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