Selective conversion of oxygenate to propylene using moving bed technology and a hydrothermally stabilized dual-function catalyst
    1.
    发明申请
    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:US20060106270A1

    公开(公告)日:2006-05-18

    申请号:US10988136

    申请日:2004-11-12

    IPC分类号: C07C1/00

    摘要: 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.

    摘要翻译: 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 REMOVAL OF OXYGENATES FROM A PARAFFIN STREAM
    2.
    发明申请
    PROCESS FOR REMOVAL OF OXYGENATES FROM A PARAFFIN STREAM 有权
    从PARAFFIN STREAM中除去氧化剂的方法

    公开(公告)号:US20060247481A1

    公开(公告)日:2006-11-02

    申请号:US11457889

    申请日:2006-07-17

    IPC分类号: C07C2/02

    摘要: The present invention comprises a process for removal of oxygenates from a paraffin-rich or olefin-rich paraffin stream which comprises passing a feed stream, comprising one or more C10 to C15 feed paraffins or C10 to C15 olefin-rich paraffin stream and one or more oxygenates through an adsorbent bed comprising one or more adsorbents selected from silica gel, activated alumina and sodium x zeolites to remove essentially all of said oxygenates; and recovering said paraffins. A second adsorbent bed may be employed to more thoroughly remove these oxygenates.

    摘要翻译: 本发明包括从富含链烷烃或富烯烃的石蜡流中除去含氧化合物的方法,该方法包括将含有一个或多个C 10的进料流通入C 15 通过吸附床将含有一种或多种选自硅胶,活性氧化铝和吸附剂的吸附剂的烷烃或C 10向富含C 15的富烯烃链烷烃流和一种或多种含氧化合物进料, 钠x沸石以除去基本上所有的含氧化合物; 并回收所述石蜡。 可以使用第二吸附剂床来更彻底地除去这些含氧化合物。

    Olefinic feedstock treatment processes
    4.
    发明申请
    Olefinic feedstock treatment processes 有权
    烯烃原料处理工艺

    公开(公告)号:US20070203387A1

    公开(公告)日:2007-08-30

    申请号:US11313071

    申请日:2005-12-20

    IPC分类号: C07C7/12 C07C5/327

    CPC分类号: C07C15/107 C07C2/66

    摘要: Aromatic by-products are sorbed from mono-olefin-containing feedstocks of olefins having from about 6 to 22 carbon atoms per molecule that contain aromatic by-products having from 7 to 22 carbon atoms per molecule. A benzene-containing regenerant displaces and desorbs the aromatic by-products from the sorbent and a regeneration effluent is provided. The regeneration effluent is treated in a regeneration effluent distillation system to provide a benzene-rich stream and an aromatic by-products-containing stream. The latter is subjected to benzene-forming conditions and recycled to the regeneration effluent distillation system where benzene is recovered.

    摘要翻译: 芳族副产物被从每分子含有约6至22个碳原子的含单烯烃的原料中吸收,每分子含有7至22个碳原子的芳族副产物。 含苯的再生剂从吸附剂中取代并解吸芳族副产物,并提供再生流出物。 再生流出物在再生流出物蒸馏系统中处理以提供富含苯的流和含芳香族副产物的流。 后者经受苯形成条件并再循环至回收苯的再生流出物蒸馏系统。

    Conversion of oxygenate to propylene with selective hydrogen treatment of heavy olefin recycle stream
    5.
    发明申请
    Conversion of oxygenate to propylene with selective hydrogen treatment of heavy olefin recycle stream 有权
    通过选择性氢处理重质烯烃循环流将含氧化合物转化为丙烯

    公开(公告)号:US20060063956A1

    公开(公告)日:2006-03-23

    申请号:US10946605

    申请日:2004-09-21

    IPC分类号: C07C1/00

    摘要: The average cycle propylene selectivity of an oxygenate to propylene (OTP) process using one or more fixed or moving beds of a dual-function oxygenate conversion catalyst with recycle of one or more C4+ olefin-rich fractions is substantially enhanced by the use of selective hydrotreating technology on these C4+ olefin-rich recycle streams to substantially eliminate detrimental coke precursors such as dienes and acetylenic hydrocarbons. This hydrotreating step helps hold the build-up of detrimental coke deposits on the catalyst to a level which does not substantially degrade dual-function catalyst activity, oxygenate conversion and propylene selectivity, thereby enabling a substantial improvement in propylene average cycle yield. The propylene average cycle yield improvement enabled by the present invention over that achieved by the prior art using the same or a similar catalyst system but without the use of the hydrotreating step on the C4+ olefin-rich recycle stream is of the order of about 1.5 to 5.5 wt-% or more.

    摘要翻译: 使用一种或多种双功能含氧化合物转化催化剂的固定床或移动床的含氧化合物对丙烯(OTP)方法的平均循环丙烯选择性,其中一个或多个C 4+ / SUP>富烯烃级分通过使用选择性加氢处理技术在这些富含C 4 O 4的富烯烃循环物流上基本上消除有害的焦炭前体,例如二烯 和炔烃。 该加氢处理步骤有助于将催化剂上的有害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,从而可以显着提高丙烯平均循环产率。 本发明的丙烯平均循环产率提高超过了现有技术使用相同或类似的催化剂体系而不使用加氢处理步骤在C 4+ / SUP>富烯烃再循环料流约为1.5〜5.5重量%以上。

    Integrated oxygenate conversion and product cracking
    6.
    发明申请
    Integrated oxygenate conversion and product cracking 有权
    综合含氧化合物转化和产物开裂

    公开(公告)号:US20070129588A1

    公开(公告)日:2007-06-07

    申请号:US11293934

    申请日:2005-12-05

    IPC分类号: C07C1/00 B01J8/02 B01J8/08

    摘要: Improved processing of an oxygenate-containing feedstock for increased production or yield of light olefins. Such processing involves oxygenate conversion to olefins and subsequent cracking of heavier olefins wherein at least a portion of the products from each of the reactors is elevated in pressure, using a common compressor, prior to being routed to a common product fractionation and recovery section. In one particular embodiment, the cracked product gas can be treated to remove acid gas therefrom. In another embodiment, the olefin cracking reactor is a moving bed reactor.

    摘要翻译: 改进含氧化合物原料的加工,以提高轻质烯烃的生产或产率。 这种处理涉及含氧化合物转化为烯烃并随后开裂较重的烯烃,其中使用普通的压缩机将来自每个反应器的产物的至少一部分在压力下升高,然后被送至共同的产物分馏和回收段。 在一个具体实施方案中,可以处理裂化产物气体以从其中除去酸性气体。 在另一个实施方案中,烯烃裂解反应器是移动床反应器。