Iron compound catalyst for inhibiting generation of dioxin
    3.
    发明授权
    Iron compound catalyst for inhibiting generation of dioxin 失效
    用于抑制二恶英产生的铁化合物催化剂

    公开(公告)号:US06800587B2

    公开(公告)日:2004-10-05

    申请号:US09840878

    申请日:2001-04-25

    IPC分类号: B01J2370

    CPC分类号: B01J23/745 B01D53/8662

    摘要: An iron compound catalyst for inhibiting the generation of dioxin contains iron oxide particles, iron oxide hydroxide particles or mixed particles 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 the iron compound catalyst in air at a temperature of 800° C. for 15 minutes, are instantaneously contacted with 6.1×10−7 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 the iron oxide hydroxide particles have 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. This iron compound catalyst enables complete combustion of 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 dioxin generation of 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: 用于抑制二恶英产生的铁化合物催化剂含有氧化铁颗粒,氧化铁氢氧化物颗粒或具有能够将不少于15%的一氧化碳转化为二氧化碳的催化活性的混合颗粒,当2.8×10 -4摩尔的氧化铁颗粒 在800℃的温度下将空气中的铁化合物催化剂热处理15分钟,通过空速(SV)在温度250℃下与6.1×10 -7摩尔一氧化碳瞬时接触而获得, 在惰性气体气氛中使用脉冲催化反应器,所述氧化铁颗粒或铁氧化物氢氧化物颗粒的平均粒径为0.01〜2.0μm,BET比表面积为0.2〜200m2 / 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如机械分批焚化炉或半连续焚烧炉中也能在低燃烧温度下,能完全燃烧城市固体废物和二恶英前体的分解,并且可以抑制由于记录效应低的二恶英生成 - 焚烧炉启动或关闭时的温度燃烧,无需大型焚烧炉更新或设备和设备投资。

    Iron compound catalyst for inhibiting generation of dioxin and incineration process of municipal solid waste using the same
    4.
    发明授权
    Iron compound catalyst for inhibiting generation of dioxin and incineration process of municipal solid waste using the same 失效
    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

    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。

    Catalyst for decomposing organohalogen compound
    5.
    发明授权
    Catalyst for decomposing organohalogen compound 失效
    用于分解有机卤素化合物的催化剂

    公开(公告)号:US06271168B1

    公开(公告)日:2001-08-07

    申请号:US09667304

    申请日:2000-09-25

    IPC分类号: B01J3100

    摘要: A composite catalyst for decomposing an organohalogen compound of the present invention, comprises composite particles comprising: iron compound particles having an average particle size of 0.01 to 2.0 &mgr;m, a phosphorus content of not more than 0.02% by weight based on the weight of the particles, a sulfur content of not more than 0.3% by weight based on the weight of the particles, and a sodium content of not more than 0.3% by weight based on the weight of the particles; and an amine compound, said composite catalyst having a catalytic activity capable of decomposing not less than 50% by weight of monochlorobenzene when 50 mg of a mixture comprising iron oxide particles obtained by heat-treating said iron compound particles at a temperature of 300° C. for 60 minutes in air, and the amine compound, is instantaneously contacted with 5.0×10−7 mol of monochlorobenzene at a temperature of 300° C. at a space velocity of 150,000 h−1 in an inert gas atmosphere using a pulse catalytic reactor.

    摘要翻译: 用于分解本发明的有机卤素化合物的复合催化剂包括复合颗粒,其包含:平均粒度为0.01至2.0μm的铁化合物颗粒,基于颗粒重量的磷含量不超过0.02重量% ,基于颗粒重量,不超过0.3重量%的硫含量,并且基于颗粒重量,钠含量不超过0.3重量%; 所述复合催化剂具有催化活性,当通过在300℃的温度下热处理所述铁化合物颗粒而获得的50mg包含氧化铁颗粒的混合物时,能够分解不低于50重量%的一氯苯。 在惰性气体气氛下,使用脉冲催化反应器,使空气中的胺化合物在300℃,150,000h -1的空速下与5.0×10-7mol的一氯苯瞬间接触。

    Method for treating organohalogen compound-containing soil or ash
    6.
    发明授权
    Method for treating organohalogen compound-containing soil or ash 失效
    用于处理含有有机卤化物的土壤或灰分的方法

    公开(公告)号:US06459012B1

    公开(公告)日:2002-10-01

    申请号:US09953442

    申请日:2001-09-17

    IPC分类号: A62D300

    摘要: A process for treating an organohalogen compound-containing soil or ash of the present invention, comprises: mixing the organohalogen compound-containing soil or ash with an organohalogen compound-decomposition catalyst composed of a composite catalyst comprising an amine compound and iron compound particles, and having an average particle size of 0.01 to 2.0 &mgr;m, a phosphorus content of not more than 0.02% by weight, a sulfur content of not more than 0.3% by weight and a sodium content of not more than 0.3% by weight; and having an apparent density (&rgr;a) of not more than 0.8 g/ml and a catalytic activity capable of decomposing not less than 50% by weight of monochlorobenzene; and heat-treating the obtained mixture at a temperature of 150 to 600° C. The method for treating an organohalogen compound-containing soil or ash in order to effectively decompose dioxins and dioxin precursors such as aromatic organohalogen compounds or aliphatic organohalogen compounds, e.g., trichloroethylene and dichloromethane, which are contained in the soil or ash.

    摘要翻译: 一种处理本发明的含有机卤素化合物的土壤或灰分的方法,包括:将含有机卤化合物的土壤或灰分与由包含胺化合物和铁化合物颗粒的复合催化剂组成的有机卤素化合物分解催化剂混合,以及 平均粒径为0.01〜2.0μm,磷含量不大于0.02重量%,硫含量不大于0.3重量%,钠含量不大于0.3重量% 并且具有不大于0.8g / ml的表观密度(rhoa)和能够分解不少于50重量%的一氯苯的催化活性; 在150至600℃的温度下对所得混合物进行热处理。用于处理含有机卤素化合物的土壤或灰分的方法,以有效分解二恶英和二恶英前体,例如芳族有机卤素化合物或脂族有机卤素化合物,例如三氯乙烯 和二氯甲烷,它们含在土壤或灰分中。

    Method of decoloring colored concrete
    10.
    发明授权
    Method of decoloring colored concrete 失效
    消色色混凝土的方法

    公开(公告)号:US5993536A

    公开(公告)日:1999-11-30

    申请号:US018330

    申请日:1998-02-04

    IPC分类号: C04B14/30 C04B40/00 C09C1/36

    摘要: A method of decoloring a colored concrete, comprises adding to the colored concrete, a decoloring pigment comprising a titanium oxide pigment, or a titanium oxide pigment and a pigment having a complementary color relative to color of the colored concrete. Such method can decolore the color of the colored concrete residue which attaches to or remains in production facilities in order to return a color thereof to that of an ordinary plain concrete, without works or treatments for washing-out or removing the colored concrete residue which attaches to or remains in the production facilities, in which the works or treatments are required in the case where the production facilities are used for the production of an ordinary plain concrete after the colored concrete has been produced therein, and without works or treatments for purifying a waste water generated upon washing-out or removing the residue and for making the waste water harmless; and a pigment used therefor.

    摘要翻译: 一种脱色有色混凝土的方法,包括向有色混凝土中加入一种脱色颜料,该颜料包含二氧化钛颜料或二氧化钛颜料和相对于着色混凝土的颜色具有互补色的颜料。 这种方法可以将附着在或留在生产设施中的着色混凝土残留物的颜色去衍生,以便将其颜色返回到普通普通混凝土的颜色,而不用于清除或除去附着的有色混凝土残留物的作业或处理 在生产设施中使用或保留在生产设备用于生产有色混凝土后的普通普通混凝土生产设备的情况下的工程或处理,以及没有用于净化有色混凝土的工作或处理 在清洗或除去残渣并使废水无害化时产生的废水; 和用于其的颜料。