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17 条记录 (耗时 0.016 秒)

    Process for reducing sox emissions from catalytic cracking units
    11.
    发明授权
    Process for reducing sox emissions from catalytic cracking units 失效
    减少催化裂化装置排放的工艺

    公开(公告)号：US4259175A

    公开(公告)日：1981-03-31

    申请号：US949755

    申请日：1978-10-10

    申请人： Dennis P. McArthur

    发明人： Dennis P. McArthur

    IPC分类号： B01D53/86 ,  C10G11/18 ,  C10G11/06 ,  B01J21/20 ,  B01J37/14

    CPC分类号： B01D53/8609 ,  C10G11/18 ,  Y10S502/517

    摘要： Reduction of SO.sub.x emissions from the regenerator associated with the fluidized catalytic cracking (FCC) unit for converting hydrocarbon feedstocks into more valuable products is achieved by introducing into the FCC cycle one or more organic, aluminum-containing compounds in dissolved form. In the catalytic cracking zone, the dissolved aluminum-containing compounds are converted to aluminum compounds that deposit relatively uniformly upon the catalyst particles. Also depositing upon the catalyst particles in the catalytic cracking zone are deactivating quantities of sulfur-containing coke. When such catalyst particles are introduced into the regenerator, wherein the sulfur-containing coke present on the catalyst surfaces is removed by combustion, thereby activating the catalyst particles, the SO.sub.x so produced reacts with the deposited aluminum compounds to form one or more stable, sulfur-aluminum oxidic compounds, thus desulfurizing the regenerator flue gas.Once deposited upon the catalyst particles, the aluminum compounds alternately react with the SO.sub.x compounds produced in the regenerator and then, by passage with the recycling catalyst particles through the catalytic cracking and steam stripping zones of the FCC unit, are converted to forms active for once again removing SO.sub.x compounds. Thus, just as the catalyst particles are alternately activated and deactivated for cracking hydrocarbons, the aluminum compounds dispersed on such catalyst particles undergo similar cyclical changes in activity with respect to SO.sub.x removal.

    摘要翻译： 通过向FCC循环中引入溶解形式的一种或多种含有机铝的化合物，可将减少与流化催化裂化（FCC）单元相关联的再生器的SO x排放量转化为更有价值的产物。 在催化裂化区中，将溶解的含铝化合物转化为相对均匀地沉积在催化剂颗粒上的铝化合物。 还在催化裂化区中沉积在催化剂颗粒上的是失活量的含硫焦炭。 当这种催化剂颗粒被引入再生器中时，其中存在于催化剂表面上的含硫焦炭通过燃烧除去，从而使催化剂颗粒活化，所产生的SOx与沉积的铝化合物反应形成一种或多种稳定的硫 铝氧化化合物，从而使再生器烟道气脱硫。 一旦沉积在催化剂颗粒上，铝化合物与再生器中产生的SOx化合物交替反应，然后通过再循环催化剂颗粒通过FCC单元的催化裂化和蒸汽汽提区通过，转化为活性一次 再次去除SOx化合物。 因此，正如催化剂颗粒交替活化和失活用于裂解烃类一样，分散在这种催化剂颗粒上的铝化合物相对于除去SOx也发生相似的活性周期性变化。

    Exhaust gas conversion process and catalyst
    12.
    发明授权
    Exhaust gas conversion process and catalyst 失效
    废气转化过程和催化剂

    公开(公告)号：US4091072A

    公开(公告)日：1978-05-23

    申请号：US774595

    申请日：1977-03-07

    申请人： Dennis P. McArthur

    发明人： Dennis P. McArthur

    IPC分类号： B01D53/94 ,  B01J23/89 ,  B01J35/00 ,  B01D53/34

    CPC分类号： B01J35/0006 ,  B01D53/945 ,  B01D53/9472 ,  B01J23/89 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/20746 ,  B01D2255/20753 ,  Y02T10/22

    摘要： A multi-catalyst system is provided which is effective for the conversion of nitrogen oxides, carbon monoxide and hydrocarbons in near stoichiometric engine exhaust gases in a single conversion zone to which no additional air is admitted. The system comprises at least two separate but contiguous components. The first component comprises a porous inert support having dispersed thereon rhodium plus nickel and/or cobalt, and is essentially free of platinum and palladium. The second component comprises a porous inert support having dispersed thereon platinum and/or palladium, with or without nickel and/or cobalt, and is essentially free of rhodium.

    摘要翻译： 提供了一种多催化剂体系，其有效用于在单一的转化区域内在接近化学计量的发动机废气中转化氮氧化物，一氧化碳和碳氢化合物，而不需要额外的空气。 该系统包括至少两个单独但相邻的部件。 第一组分包括其上分散有铑加镍和/或钴的多孔惰性载体，并且基本上不含铂和钯。 第二组分包括其上分散有铂和/或钯的多孔惰性载体，具有或不具有镍和/或钴，并且基本上不含铑。

    Iridium-nickel exhaust gas conversion catalyst and process
    14.
    发明授权
    Iridium-nickel exhaust gas conversion catalyst and process 失效
    铱镍废气转化催化剂及工艺

    公开(公告)号：US3998930A

    公开(公告)日：1976-12-21

    申请号：US470680

    申请日：1974-05-17

    申请人： Dennis P. McArthur

    发明人： Dennis P. McArthur

    IPC分类号： B01D53/94 ,  B01J23/89 ,  B01D53/34

    CPC分类号： B01D53/945 ,  B01J23/892 ,  Y02T10/22

    摘要： Process and catalyst for the catalytic conversion of nitrogen oxides (NO.sub.x), unburned hydrocarbons and carbon monoxide in internal combustion engine exhaust gases. The catalyst comprises essentially a composite of nickel and a minor proportion of iridium. This composite catalyst is found to be exceptionally resistant to poisoning by sulfur and lead compounds present in the exhaust gases.

    摘要翻译： 用于内燃机废气中氮氧化物（NOx），未燃碳氢化合物和一氧化碳的催化转化的方法和催化剂。 催化剂基本上包含镍和少量铱的复合物。 发现该复合催化剂特别耐受废气中存在的硫和铅化合物的中毒。

    Catalysts for reducing CO and SO.sub.x emissions from catalytic cracking units
    15.
    发明授权
    Catalysts for reducing CO and SO.sub.x emissions from catalytic cracking units 失效
    用于减少催化裂化装置的CO和SO x排放的催化剂

    公开(公告)号：US4341661A

    公开(公告)日：1982-07-27

    申请号：US228266

    申请日：1981-01-26

    申请人： Kenneth Baron ,  Dennis P. McArthur

    发明人： Kenneth Baron ,  Dennis P. McArthur

    IPC分类号： B01J23/10 ,  B01J27/12 ,  B01J27/232 ,  C10G11/04 ,  C10G11/18 ,  B01J29/08

    CPC分类号： B01J27/12 ,  B01J23/10 ,  B01J27/232 ,  C10G11/04 ,  C10G11/18 ,  Y02P30/446

    摘要： Reduction of CO and SO.sub.x emissions from regenerators associated with cyclical fluidized catalytic cracking (FCC) units used to convert hydrocarbon feedstocks into more valuable products is achieved by introducing particles of bastnaesite into the FCC unit. The bastnaesite particles recycle with the catalyst particles successively through a catalytic cracking reaction zone, a stripping zone, and a regeneration zone. The bastnaesite particles react with SO.sub.x produced in the regeneration zone of the FCC unit, thereby lowering the SO.sub.x content of the flue gas discharged therefrom. In the catalytic cracking and stripping zones of the FCC unit, the bastnaesite particles are at least partially reactivated so that upon returning to the regeneration zone yet more SO.sub.2 is removed. The bastnaesite particles also aid in lowering CO emissions from the FCC regenerator by catalyzing the reaction between CO and oxygen to yield CO.sub.2.

    摘要翻译： 通过将碳酸盐原料颗粒引入FCC单元中，将烃原料转化为更有价值的产物，可以减少与循环流化催化裂化（FCC）单元相关的再生器的CO和SO x排放。 硫酸钠颗粒随催化剂颗粒依次通过催化裂化反应区，汽提区和再生区再循环。 渣滓矿颗粒与在FCC装置的再生区产生的SO x反应，从而降低从其排出的烟道气的SO x含量。 在FCC装置的催化裂化和汽提区域中，韧皮细颗粒至少部分地再活化，使得当返回到再生区时，还除去更多的SO 2。 通过催化CO和氧之间的反应产生二氧化碳，还可以帮助降低FCC再生器的CO排放。

    Aluminum borate catalyst compositions and use thereof in chemical conversions
    17.
    发明授权
    Aluminum borate catalyst compositions and use thereof in chemical conversions 失效
    硼酸铝催化剂组合物及其在化学转化中的用途

    公开(公告)号：US4034061A

    公开(公告)日：1977-07-05

    申请号：US591352

    申请日：1975-06-30

    申请人： Dennis P. McArthur

    发明人： Dennis P. McArthur

    IPC分类号： B01D53/94 ,  B01J21/02 ,  B01J23/755 ,  C07C1/02 ,  B01D53/34

    CPC分类号： B01D53/945 ,  B01J21/02 ,  B01J23/755 ,  C07C1/02 ,  C07C2521/02 ,  C07C2521/04 ,  C07C2523/755 ,  Y02T10/22

    摘要： Certain crystalline aluminum borate catalyst supports containing about 8-25 weight-percent of B.sub.2 O.sub.3 are found to provide unusually stable and active catalysts for high-temperature chemical conversions, particularly exhaust gas conversion, when prepared by precalcining shaped composites of alumina and boria at temperatures between about 1250.degree. and 2600.degree. F, prior to the addition thereto of active metal or metals. Calcination at below 1250.degree. F is found to yield amorphous catalysts of inferior activity, while at temperatures above 2600.degree. F drastic reductions in surface area may occur.

    摘要翻译： 发现含有约8-25重量％的B 2 O 3的某些结晶硼酸铝催化剂载体在通过在氧化铝和氧化硼的成形复合材料中预煅烧制备时，提供用于高温化学转化，特别是废气转化的异常稳定和活性的催化剂， 约1250℃和2600°F，然后加入活性金属或金属。 发现低于1250°F的煅烧产生的活性较差的无定形催化剂，而在2600°F以上的温度下，可能会发生大幅度的表面积减少。