Selective conversion of oxygenate to propylene using moving bed technology and a hydrothermally stabilized dual-function catalyst
    16.
    发明授权
    Selective conversion of oxygenate to propylene using moving bed technology and a hydrothermally stabilized dual-function catalyst 有权
    使用移动床技术和水热稳定的双功能催化剂选择性地将含氧化合物转化为丙烯

    公开(公告)号:US07408092B2

    公开(公告)日:2008-08-05

    申请号:US10988136

    申请日:2004-11-12

    Abstract: The average propylene cycle selectivity of an oxygenate to propylene (OTP) process using a dual-function oxygenate conversion catalyst is substantially enhanced by the use of a combination of: 1) moving bed reactor technology in the hydrocarbon synthesis portion of the OTP flow scheme in lieu of the fixed bed technology of the prior art; 2) a hydrothermally stabilized and dual-functional catalyst system comprising a molecular sieve having dual-function capability dispersed in a phosphorus-modified alumina matrix containing labile phosphorus and/or aluminum anions; and 3) a catalyst on-stream cycle time of 400 hours or less. These provisions stabilize the catalyst against hydrothermal deactivation and hold the build-up of coke deposits on the catalyst to a level which does not substantially degrade dual-function catalyst activity, oxygenate conversion and propylene selectivity, thereby enabling maintenance of average propylene cycle yield near or at essentially start-of-cycle levels.

    Abstract translation: 使用双功能含氧化合物转化催化剂的含氧化合物对丙烯(OTP)方法的平均丙烯循环选择性通过使用以下组合来显着增强:1)OTP流程图的烃合成部分中的移动床反应器技术 现有技术的固定床技术的代替; 2)水热稳定和双功能催化剂体系,其包含具有分散在含有不稳定磷和/或铝阴离子的磷改性氧化铝基质中的双功能能力的分子筛; 和3)催化剂在流循环时间为400小时以下。 这些规定稳定催化剂以防止水热失活,并将催化剂上焦炭沉积物的积聚保持在基本上不降低双功能催化剂活性,含氧化合物转化率和丙烯选择性的水平,从而使维持平均丙烯循环产率接近或 基本上是循环周期的水平。

    Process for polymerization of alpha-olefin
    18.
    发明申请
    Process for polymerization of alpha-olefin 失效
    α-烯烃聚合方法

    公开(公告)号:US20040230014A1

    公开(公告)日:2004-11-18

    申请号:US10816895

    申请日:2004-04-05

    Inventor: Katsutoshi Kougo

    Abstract: The object of the present invention is to provide a polyolefin polymerization method which prevents fine particles of polymer from scattering from a fluidized bed in a gas phase polymerization reactor. This object is achieved by a process for polymerization of null-olefin in multi-stage polymerization process and in at least two serially arranged polymerization reactors including a gas phase polymerization reactor, the process comprising; drawing out polyolefin particles from a polymerization reactor, and transferring the polyolefin particles into the interior of fluidized bed of a gas phase polymerization reactor of the next stage.

    Abstract translation: 本发明的目的是提供一种聚烯烃聚合方法,其防止聚合物细颗粒在气相聚合反应器中从流化床散射。 该目的通过多级聚合方法中的α-烯烃聚合方法和包括气相聚合反应器在内的至少两个串联排列的聚合反应器中实现。 从聚合反应器中抽出聚烯烃颗粒,并将聚烯烃颗粒转移到下一阶段的气相聚合反应器的流化床的内部。

    Process for converting coal into fuel cell quality hydrogen and sequestration-ready carbon dioxide
    19.
    发明授权
    Process for converting coal into fuel cell quality hydrogen and sequestration-ready carbon dioxide 失效
    将煤转化为燃料电池质量的氢和封存的二氧化碳的方法

    公开(公告)号:US06669917B2

    公开(公告)日:2003-12-30

    申请号:US09917801

    申请日:2001-07-31

    Inventor: Richard K. Lyon

    Abstract: A process for burning coal to produce substantially pure hydrogen for use in fuel cells, together with “sequestration ready” carbon dioxide and a stream of oxygen depleted air for powering gas turbines, characterized by using a combination of two fluidized bed reactors and a third transfer line reactor, the first reactor being supplied with coal particles or “char” and fluidized with high temperature steam; the second reactor being fluidized with high temperature steam and the third reactor being fluidized by compressed air. Solids circulated among these three reactors include a mixture of materials containing calcium compounds (present as CaO, CaCO3 and mixtures thereof) and iron compounds (present as FeO, Fe2O3 and mixtures thereof). The coal is gasified by the steam in the presence of CaO to produce CaCO3 and relatively pure hydrogen for use in fuel cells per a CO2 acceptor process. Because only part of the coal char input to the first reactor is gasified to produce hydrogen, the remainder can be burned to supply thermal energy necessary to regenerate the CaCO3 back to CaO. Carbon in the middle bed fluidized bed reactor reacts with Fe2O3 in the third reactor and the temperature in the middle fluidized bed reactor is sufficiently high to decompose CaCO3 back into CaO.

    Abstract translation: 一种用于燃烧煤以生产用于燃料电池的基本上纯的氢的方法,以及“隔离准备好”的二氧化碳和用于为燃气轮机供电的耗氧空气流,其特征在于使用两个流化床反应器和第三次转移 第一反应器供应煤颗粒或“炭”并用高温蒸汽流化; 第二反应器用高温蒸汽流化,第三反应器被压缩空气流化。 在这三个反应器中循环的固体包括含有钙化合物(以CaO,CaCO 3及其混合物存在)和铁化合物(以FeO,Fe 2 O 3及其混合物存在)的材料的混合物。 煤在CaO的存在下被蒸汽气化以产生CaCO 3和相对纯的氢气,用于每个CO2受体过程的燃料电池。 由于仅输入到第一反应器的煤焦炭的一部分被气化以产生氢气,所以其余部分可被燃烧以提供再生CaCO3所需的热能回到CaO。 中间床流化床反应器中的碳与第三反应器中的Fe 2 O 3反应,中流化床反应器中的温度足够高以将CaCO3分解成CaO。

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