Process for the elimination of silica and other impurities in fluidized
bed syn gas production
    2.
    发明授权
    Process for the elimination of silica and other impurities in fluidized bed syn gas production 失效
    在流化床合成气生产中消除二氧化硅和其他杂质的方法

    公开(公告)号:US5421841A

    公开(公告)日:1995-06-06

    申请号:US301207

    申请日:1994-09-06

    IPC分类号: C01B3/44

    CPC分类号: C01B3/44

    摘要: A process for the production of syn gas (hydrogen and carbon monoxide) by reaction at high temperature between low molecular weight hydrocarbons, steam and oxygen in an impurities-containing refractory lined reaction zone. The lined reaction zone is pretreated with steam, or with steam and a reducing gas, e.g. a mixture of steam and hydrogen to leach out, react with, and transport the impurities, i.e., the reaction products of silica, or silica plus phosphorus or sulfur, or silica plus phosphorus and sulfur, from the reaction zone. Steam alone may be used to leach out, convert the silica to gaseous silicic acid, and remove same from the reaction zone; and then the hydrocarbons, steam and oxygen feeds are introduced into the reaction zone to produce syn gas.

    摘要翻译: 通过在含杂质的耐火材料衬里反应区中的低分子量烃,蒸汽和氧气之间的高温反应生产合成气(氢气和一氧化碳)的方法。 衬里的反应区用蒸汽或蒸汽和还原气体例如预处理。 蒸汽和氢气的混合物从反应区浸出,反应和输送杂质,即二氧化硅或二氧化硅与磷或硫或二氧化硅加磷和硫的反应产物。 可以单独使用蒸汽浸出,将二氧化硅转化为气态硅酸,并从反应区除去; 然后将烃,蒸汽和氧气进料引入反应区以产生合成气。

    Particulate solids for catalyst supports and heat transfer materials
    3.
    发明授权
    Particulate solids for catalyst supports and heat transfer materials 失效
    用于催化剂载体和传热材料的颗粒状固体

    公开(公告)号:US5476877A

    公开(公告)日:1995-12-19

    申请号:US346973

    申请日:1994-11-29

    摘要: A particulate, precalcined low silica content zirconia, especially one stabilizer with yttria, is useful as a catalyst support or as a heat transfer solids component for conducting chemical reactions at high temperature, in oxidizing, reducing or hydrothermal conditions, especially in syn gas operations. An admixture of precalcined particulate low silica content zirconia, particularly a low silica content yttria-stabilized zirconia, is employed in a preferred embodiment as a heat transfer solid, in concentrations ranging generally from about 10 wt. % to about 99.9 wt. % with a particulate catalyst notably a nickel-on-alumina catalyst, in concentration ranging generally from about 0. 1 wt. % to about 90 wt. %. Such an admixture provides a particularly useful catalytic contact mass in high temperature oxidizing, reducing and hydrothermal environments, notably in conducting synthesis gas generation operations. This type of bed promotes continuous, highly efficient heat and mass transfer within the reacting gas phase. The presence of the heat transfer solid as a bed component maintains excellent bed fluidization characteristics, suppressing the normal tendency of the catalyst to sinter or agglomerate; tendencies which promote defluidization of the bed. Moreover, the heat transfer particles of the bed are highly attrition resistant, and are chemically compatible with the catalyst particles of the admixture.

    摘要翻译: 颗粒状预煅烧的低二氧化硅含量的氧化锆,特别是具有氧化钇的一种稳定剂,可用作催化剂载体或用作在高温,氧化,还原或水热条件下进行化学反应的传热固体组分,特别是在合成气操作中。 预先煅烧的颗粒状低二氧化硅含量的氧化锆,特别是低二氧化硅含量氧化钇稳定的氧化锆的混合物在优选的实施方案中用作传热固体,浓度通常为约10重量% %至约99.9wt。 %的颗粒催化剂,特别是镍 - 氧化铝催化剂,其浓度范围通常为约0.1重量% %至约90wt。 %。 这种混合物在高温氧化,还原和水热环境中特别是在进行合成气生成操作中提供特别有用的催化接触物质。 这种类型的床促进在反应气相内的连续,高效的热和质量传递。 作为床成分的传热固体的存在保持了优异的床流化特性,抑制了催化剂烧结或附聚的正常趋势; 促进床层流变的趋势。 此外,床的传热颗粒是高度耐磨性的,并且与混合物的催化剂颗粒化学相容。

    Synthesis gas from particulate catalysts, and admixtures of particulate
catalysts and heat transfer solids
    4.
    发明授权
    Synthesis gas from particulate catalysts, and admixtures of particulate catalysts and heat transfer solids 失效
    颗粒催化剂的合成气,颗粒催化剂和传热固体的混合物

    公开(公告)号:US5348717A

    公开(公告)日:1994-09-20

    申请号:US60332

    申请日:1993-05-11

    摘要: A process utilizing a particulate catalyst, or particulate catalyst admixed with particulate heat transfer solids for conducting high temperature fluidized bed syn gas operations. Hydrogen and carbon monoxide are produced from a low molecular weight hydrocarbon by contact thereof, at high temperature in the presence of oxygen, or steam and oxygen, with a fluidized bed comprising said particulate solids. In one of its forms, barium hexaluminate is employed as a heat transfer solid, in concentrations ranging generally from about 10 wt. % to about 99.9 wt. %, in admixture with a particulate catalyst containing a metal, or metals, component catalytic for the production of hydrogen and carbon monoxide from low molecular weight hydrocarbons contacted with a fluidized bed of the catalyst at high temperature hydrothermal conditions. The catalyst, suitably one having a barium hexaluminate carrier component, is employed in concentration ranging generally from about 0.1 wt. % to about 90 wt. %. Such an admixture provides a particularly useful catalytic contact mass for conducting fluidized bed synthesis gas generation operations. This type of bed promotes continuous, highly efficient heat and mass transfer within the reacting gas phase. The presence of the catalyst having a barium hexaluminate carrier component, or barium hexaluminate heat transfer solid as a bed component maintains excellent bed fluidization characteristics, suppressing the normal tendency of the catalyst to sinter or agglomerate; tendencies which promote defluidization of the bed. Moreover, the heat transfer particles of the bed are highly attrition resistant, and are chemically compatible with the catalyst particles of the admixture.

    摘要翻译: 一种利用颗粒催化剂或与颗粒状传热固体混合的颗粒催化剂进行高温流化床合成气操作的方法。 氢和一氧化碳通过与低分子量烃在氧气或蒸气和氧气的存在下在高温下与其接触而产生,其中包含所述颗粒固体的流化床。 在其一种形式中,采用六铝酸钡作为传热固体,其浓度通常为约10wt。 %至约99.9wt。 %,与含有金属或金属的颗粒催化剂的混合物,催化剂用于在高温水热条件下与催化剂的流化床接触的低分子量烃生产氢气和一氧化碳。 合适地使用具有六铝酸钡载体组分的催化剂的浓度通常为约0.1重量% %至约90wt。 %。 这种混合物提供用于进行流化床合成气产生操作的特别有用的催化接触物质。 这种类型的床促进在反应气相内的连续,高效的热和质量传递。 作为床成分的具有六铝酸钡载体成分或六铝酸钡传热固体的催化剂的存在保持了优异的床流化特性,抑制了催化剂烧结或附聚的正常趋势; 促进床层流变的趋势。 此外,床的传热颗粒是高度耐磨性的,并且与混合物的催化剂颗粒化学相容。

    High surface purity heat transfer solids for high temperature fluidized
bed reactions
    5.
    发明授权
    High surface purity heat transfer solids for high temperature fluidized bed reactions 失效
    高表面纯度的传热固体用于高温流化床反应

    公开(公告)号:US5360778A

    公开(公告)日:1994-11-01

    申请号:US60378

    申请日:1993-05-11

    摘要: High surface purity heat transfer solids are formed, suitably by washing and treating particulate refractory inorganic solids, notably alumina, which contains as impurities up to about 0.5 wt. % silicon and/or up to about 500 wppm boron, with an acid, or dilute acid solution sufficient to reduce the concentration of silicon and boron in the outer peripheral surface layer of the particles, e.g., as measured inwardly toward the center of a particle to a depth of about 50 .ANG. using X-ray photoelectron spectroscopy, to no greater than about 5 atom percent silicon and boron, preferably about 2 atom percent silicon and boron, based on the total number of cations within said outer peripheral surface layer, thereby reducing the tendency of said particles to sinter and agglomerate in the conversion of said hydrocarbon to hydrogen and carbon monoxide in a fluidized bed synthesis gas operation vis-a-vis particles otherwise similar except that the particles are not treated with the acid. The tendency of the particles to sinter and agglomerate is further reduced by the additional removal of sodium, iron, calcium, and titanium impurities from the outer peripheral surface layer of the particles. Preferably the latter named impurities, or impurities other than silicon and boron, are reduced to a concentration below about 20 atom %, more preferably to a concentration below about 15 atom %, in the outer surface layer of the particles.

    摘要翻译: 适当地通过洗涤和处理颗粒耐火无机固体,特别是氧化铝来形成高表面纯度的热传递固体,其含有高达约0.5wt。 %硅和/或高达约500wppm的硼,与酸或稀酸溶液相比足以降低颗粒外周表面层中硅和硼的浓度,例如向内朝向颗粒中心测量 基于所述外周表面层中的阳离子总数,使用X射线光电子能谱测量至约50AHZ的深度,不大于约5原子%的硅和硼,优选约2原子%的硅和硼,由此 降低了所述颗粒在流化床合成气操作中将所述烃转化为氢气和一氧化碳的过程中所述颗粒烧结和附聚的倾向,除了颗粒不用酸处理之外,颗粒否则相似。 通过从颗粒的外周表面层另外去除钠,铁,钙和钛杂质,进一步降低了颗粒烧结和附聚的倾向。 优选地,后者称为杂质或除了硅和硼之外的杂质,在颗粒的外表面层中被还原成低于约20原子%,更优选低于约15原子%的浓度。

    Structurally modified alumina supports, and heat transfer solids for
high temperature fluidized bed reactions
    6.
    发明授权
    Structurally modified alumina supports, and heat transfer solids for high temperature fluidized bed reactions 失效
    结构改性的氧化铝载体和用于高温流化床反应的传热固体

    公开(公告)号:US5395406A

    公开(公告)日:1995-03-07

    申请号:US60371

    申请日:1993-05-11

    摘要: A structurally modified alumina useful as a catalyst support, or heat transfer solid for fluidized bed synthesis gas processing. A Group IIA metal, or metals, particularly magnesium and barium, is composited with a particulate alumina to provide a catalyst support, or alumina heat transfer solid, having increased resistance to sintering and agglomeration; properties which promote defluidization of the bed in conducting fluidized bed reactions at high temperatures. The particles of preference are represented by formulas (1) and (2), a composite particle being represented by formula (1), as follows:M.sub.x Al.sub.2 O.sub.3+x (1)with the core of the particle being represented by formula (2), as follows:M.sub.y Al.sub.2 O.sub.3+y (2)where in formulas (1) and (2) M is a Group IIA metal, x is a number ranging from about 0.01 to about 0.4 and is representative of the number of moles of the metal M per mole of Al.sub.2 O.sub.3 y is a number equal to or greater than zero, and x is greater than y.

    摘要翻译: 用作催化剂载体的结构改性氧化铝,或用于流化床合成气处理的传热固体。 IIA族金属或金属,特别是镁和钡与颗粒氧化铝复合以提供具有增加的耐烧结和附聚性能的催化剂载体或氧化铝传热固体; 促进床在高温下进行流化床反应的流化的性质。 优选的颗粒由式(1)和(2)表示,复合颗粒由式(1)表示,如下:颗粒的核心由式(2)表示的M x Al 2 O 3 + x(1) 如下:MyAl2O3 + y(2)其中式(1)和(2)中的M是IIA族金属,x是约0.01至约0.4的数,代表每个金属M的摩尔数 摩尔的Al 2 O 3 y是等于或大于零的数,x大于y。

    High surface purity heat transfer solids for high temperature fluidized
bed reactions
    7.
    发明授权
    High surface purity heat transfer solids for high temperature fluidized bed reactions 失效
    高表面纯度的传热固体用于高温流化床反应

    公开(公告)号:US5496531A

    公开(公告)日:1996-03-05

    申请号:US276071

    申请日:1994-07-15

    摘要: High surface purity heat transfer solids are formed, suitably by washing and treating particulate refractory inorganic solids, notably alumina, which contains as impurities up to about 0.5 wt. % silicon and/or up to about 500 wppm boron, with an acid, or dilute acid solution sufficient to reduce the concentration of silicon and boron in the outer peripheral surface layer of the particles, e.g., as measured inwardly toward the center of a particle to a depth of about 50 .ANG. using X-ray photoelectron spectroscopy, to no greater than about 5 atom percent silicon and boron, preferably about 2 atom percent silicon and boron, based on the total number of cations within said outer peripheral surface layer, thereby reducing the tendency of said particles to sinter and agglomerate in the conversion of said hydrocarbon to hydrogen and carbon monoxide in a fluidized bed synthesis gas operation vis-a-vis particles otherwise similar except that the particles are not treated with the acid. The tendency of the particles to sinter and agglomerate is further reduced by the additional removal of sodium, iron, calcium, and titanium impurities from the outer peripheral surface layer of the particles. Preferably the latter named impurities, or impurities other than silicon and boron, are reduced to a concentration below about 20 atom %, more preferably to a concentration below about 15 atom %, in the outer surface layer of the particles.

    摘要翻译: 适当地通过洗涤和处理颗粒耐火无机固体,特别是氧化铝来形成高表面纯度的热传递固体,其含有高达约0.5wt。 %硅和/或高达约500wppm的硼,与酸或稀酸溶液相比足以降低颗粒外周表面层中硅和硼的浓度,例如向内朝向颗粒中心测量 基于所述外周表面层中的阳离子总数,使用X射线光电子能谱测量至约50AHZ的深度,不大于约5原子%的硅和硼,优选约2原子%的硅和硼,由此 降低了所述颗粒在流化床合成气操作中将所述烃转化为氢气和一氧化碳的过程中所述颗粒烧结和附聚的倾向,除了颗粒不用酸处理之外,颗粒否则相似。 通过从颗粒的外周表面层另外去除钠,铁,钙和钛杂质,进一步降低了颗粒烧结和附聚的倾向。 优选地,后者称为杂质或除了硅和硼之外的杂质,在颗粒的外表面层中被还原成低于约20原子%,更优选低于约15原子%的浓度。

    Particulate solids for catalyst supports and heat transfer materials
    8.
    发明授权
    Particulate solids for catalyst supports and heat transfer materials 失效
    用于催化剂载体和传热材料的颗粒状固体

    公开(公告)号:US5395813A

    公开(公告)日:1995-03-07

    申请号:US60334

    申请日:1993-05-11

    摘要: A particulate, precalcined low silica content zirconia, especially one stabilized with yttria, is useful as a catalyst support or as a heat transfer solids component for conducting chemical reactions at high temperature, in oxidizing, reducing or hydrothermal conditions, especially in syn gas operations. An admixture of precalcined particulate low silica content zirconia, particularly a low silica content yttria-stabilized zirconia, is employed in a preferred embodiment as a heat transfer solid, in concentrations ranging generally from about 10 wt. % to about 99.9 wt. %, with a particulate catalyst, notably a nickel-on-alumina catalyst, in concentration ranging generally from about 0.1 wt. % to about 90 wt. %. Such an admixture provides a particularly useful catalytic contact mass in high temperature oxidizing, reducing and hydrothermal environments, notably in conducting synthesis gas generation operations. This type of bed promotes continuous, highly efficient heat and mass transfer within the reacting gas phase. The presence of the heat transfer solid as a bed component maintains excellent bed fluidization characteristics, suppressing the normal tendency of the catalyst to sinter or agglomerate; tendencies which promote defluidization of the bed. Moreover, the heat transfer particles of the bed are highly attrition resistant, and are chemically compatible with the catalyst particles of the admixture.

    摘要翻译: 颗粒状预煅烧的低二氧化硅含量的氧化锆,特别是用氧化钇稳定的氧化锆,可用作催化剂载体或用作在高温,氧化,还原或水热条件下进行化学反应的传热固体组分,特别是在合成气操作中。 预先煅烧的颗粒状低二氧化硅含量的氧化锆,特别是低二氧化硅含量氧化钇稳定的氧化锆的混合物在优选的实施方案中用作传热固体,浓度通常为约10重量% %至约99.9wt。 %的颗粒催化剂,特别是镍 - 氧化铝催化剂,其浓度通常为约0.1wt。 %至约90wt。 %。 这种混合物在高温氧化,还原和水热环境中特别是在进行合成气生成操作中提供特别有用的催化接触物质。 这种类型的床促进在反应气相内的连续,高效的热和质量传递。 作为床成分的传热固体的存在保持了优异的床流化特性,抑制了催化剂烧结或附聚的正常趋势; 促进床层流变的趋势。 此外,床的传热颗粒是高度耐磨性的,并且与混合物的催化剂颗粒化学相容。

    High performance alumina heat transfer solids for high temperature
fluidized bed synthesis gas reactions
    9.
    发明授权
    High performance alumina heat transfer solids for high temperature fluidized bed synthesis gas reactions 失效
    高性能氧化铝传热固体用于高温流化床合成气反应

    公开(公告)号:US5360777A

    公开(公告)日:1994-11-01

    申请号:US60395

    申请日:1993-05-11

    摘要: Alumina heat transfer solids are admixed with a catalyst, or catalysts, and used in conducting high temperature fluidized bed reactions, particularly in a process for the production of hydrogen and carbon monoxide from a low molecular weight hydrocarbon by contact with a fluidized bed of catalyst and said heat transfer solids at high temperature in the presence of oxygen, or steam, or both oxygen and steam. The particulate heat transfer solids are characterized as having a performance index, PI, greater than 20, preferably greater than 40, as characterized by the formula PI=[(i).times.(ii).times.(iii).times.(iv)].sup.-1 where (i) the peripheral outer surface of the particle contains

    摘要翻译: 将氧化铝传热固体与催化剂或催化剂混合,并用于进行高温流化床反应,特别是在通过与催化剂流化床接触从低分子量烃生产氢气和一氧化碳的方法中, 所述传热固体在高温下在氧气或蒸汽,氧气和蒸汽两者的存在下。 颗粒传热固体的特征在于具有大于20,优选大于40的性能指数PI,其特征在于PI = [(i)x(ii)x(iii)x(iv)] -1 其中(i)颗粒的周边外表面含有<5原子%(Si + B)作为杂质,和(ii)<20原子%的Na,Fe,Ca和Ti作为杂质,其中(Si + B)足以在工艺条件下迁移并污染颗粒的外表面层。 此外,(iii)颗粒的堆积密度范围为约1.2g / cc至约2.5g / cc,和(iv)颗粒的Davison磨损指数不大于约12。

    Hydrothermal alkali metal recovery process
    10.
    发明授权
    Hydrothermal alkali metal recovery process 失效
    水热碱金属回收工艺

    公开(公告)号:US4159195A

    公开(公告)日:1979-06-26

    申请号:US864061

    申请日:1977-12-23

    申请人: LeRoy R. Clavenna

    发明人: LeRoy R. Clavenna

    摘要: In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered from the particles by treating them with a calcium or magnesium-containing compound in the presence of water. The treating process is carried out under conditions such that the calcium or magnesium-containing compound reacts with water insoluble constituents of the alkali metal residues such as alkali metal aluminosilicates to produce an aqueous solution containing water soluble alkali metal constituents. The aqueous solution is recycled to the gasification process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. The process permits increased recovery of alkali metal constituents, thereby decreasing the overall cost of the gasification process by reducing the amount of makeup alkali metal compounds necessary.

    摘要翻译: 在产生含有碱金属残留物的固体颗粒的含碱金属的催化剂存在下进行的煤气化操作或类似的转化方法中,通过用含钙或镁的化合物处理从颗粒中回收碱金属成分 在水的存在下。 处理过程在使含钙或镁的化合物与碱金属铝硅酸盐等碱金属残基的水不溶性成分反应以产生含有水溶性碱金属成分的水溶液的条件下进行。 水溶液再循环到气化过程中,其中碱金属组分用作至少一部分含碱金属的催化剂的碱金属组分。 该方法允许增加碱金属成分的回收率,从而通过减少所需的碱金属化合物的量来降低气化过程的总体成本。