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。

    Process for selective removal of cyclic urea from hindered amine gas
treating solution
    7.
    发明授权
    Process for selective removal of cyclic urea from hindered amine gas treating solution 失效
    从受阻胺气体处理溶液中选择性除去环状脲的方法

    公开(公告)号:US4180548A

    公开(公告)日:1979-12-25

    申请号:US972500

    申请日:1978-12-22

    摘要: A cyclic urea reaction product forms as a by-product of a hindered amine acid gas scrubbing process and results in an ultimate buildup of the material in the circulating amine scrubbing solution. The buildup of this material has a deleterious effect on acid gas removal rates and accordingly, results in inefficient acid gas removal. In the process of the present invention, the cyclic urea degradation product is removed from the circulating solution by employing a selective precipitation of the cyclic urea followed by filtration. The selective precipitation is carried out by cooling the circulating solution to a particular temperature level such that the cyclic urea comes out of solution while the other components remain in solution.

    摘要翻译: 环状尿素反应产物形成为受阻胺酸气洗涤工艺的副产物,并导致该循环胺洗涤溶液中物质的最终累积。 这种材料的积累对酸性气体去除速率具有有害的影响,因此导致无效的酸性气体去除。 在本发明的方法中,通过使用环状尿素的选择性沉淀,然后过滤,从循环溶液中除去环状脲分解产物。 通过将循环溶液冷却至特定的温度水平进行选择性沉淀,使得环状脲从溶液中排出,而其它组分保留在溶液中。

    High surface purity heat transfer solids for high temperature fluidized
bed reactions
    8.
    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。

    Process for converting cyclic urea to corresponding diamine in a gas
treating system
    9.
    发明授权
    Process for converting cyclic urea to corresponding diamine in a gas treating system 失效
    在气体处理系统中将环脲转化为相应的二胺的方法

    公开(公告)号:US4282194A

    公开(公告)日:1981-08-04

    申请号:US122589

    申请日:1980-02-19

    IPC分类号: B01D53/14 B01D53/52 B01D53/34

    摘要: Acidic gases such as carbon dioxide are removed from a normally gaseous mixture including the acidic component by contacting the gaseous mixture in an absorption zone with an acid absorbing scrubbing solution comprising a basic alkali metal compound and an activator for the compound, during which process at least a portion of the activator is converted to a cyclic urea. The solution is then transferred to the desorption zone to remove at least a portion of the absorbed acidic component. At least a portion of the partially desorbed scrubbing solution containing the cyclic urea is transferred from the desorption zone to a thermal conversion zone maintained at an elevated temperature wherein at least a portion of the cyclic urea is converted back to the activator. A portion of the scrubbing solution from the thermal conversion zone, relatively rich in the acidic component is vaporized and returned to the desorption zone, and another portion, relatively lean in the acidic component, is returned from the thermal conversion zone to the absorption zone.

    摘要翻译: 通过使吸收区中的气体混合物与包含碱性碱金属化合物和化合物的活化剂的吸酸洗涤溶液接触,将酸性气体如二氧化碳从包括酸性组分的常规气态混合物中除去,在该过程中至少 活化剂的一部分转化为环状脲。 然后将溶液转移到解吸区以除去至少一部分吸收的酸性组分。 含有环状尿素的部分解吸附的洗涤溶液的至少一部分从解吸区转移到保持在高温下的热转化区,其中至少一部分环脲转化回活化剂。 相对富含酸性组分的来自热转化区的洗涤溶液的一部分被蒸发并返回到解吸区,并且酸性组分中相对贫的另一部分从热转化区返回到吸收区。

    Process, and apparatus, for the injection of preheated oxygen into a
high temperature reactor
    10.
    发明授权
    Process, and apparatus, for the injection of preheated oxygen into a high temperature reactor 失效
    工艺和设备,用于将预热的氧气注入高温反应器

    公开(公告)号:US5588974A

    公开(公告)日:1996-12-31

    申请号:US416622

    申请日:1995-04-04

    摘要: Process, and apparatus, for the production of hydrogen and carbon monoxide in a reactor, preferably one containing a bed of a particulate solids catalyst, or catalyst and solids diluent, by contacting and reacting within the reaction zone a low molecular weight hydrocarbon feed, steam and oxygen, or a low molecular weight hydrocarbon feed and oxygen, at high temperature. An oxygen stream preheated to high temperature is fed via a nozzle inlet, or inlets, into the reactor, while the hydrocarbon and steam, or hydrocarbon, is fed via a different nozzle inlet, or inlets, into the reactor. Preferred oxygen nozzle designs are constituted of nickel-chromium-iron alloys, especially Inconel 600, and Inconel alloys of the 600 series generally. The oxygen nozzle is comprised of a tubular body with inlet, and outlets of special design, which renders the nozzle especially useful in the intensely hot oxygen environment.

    摘要翻译: 方法和装置,用于在反应器中生产氢气和一氧化碳,优选含有颗粒固体催化剂床或催化剂和固体稀释剂的氢气和一氧化碳,通过在反应区内使低分子量烃进料,蒸汽 和氧气,或低分子量烃进料和氧气。 预热到高温的氧气流通过喷嘴入口或入口进料到反应器中,而烃和蒸汽或烃通过不同的喷嘴入口或入口进料到反应器中。 优选的氧气喷嘴设计由镍 - 铬 - 铁合金,特别是Inconel 600和一般600系列的Inconel合金构成。 氧气喷嘴由具有入口的管状体和特殊设计的出口组成,其使得喷嘴在强热的氧气环境中特别有用。