Conversion of Dimethylether to Propylene using Moving Bed Technology
    51.
    发明申请
    Conversion of Dimethylether to Propylene using Moving Bed Technology 有权
    使用移动床技术将二甲醚转化成丙烯

    公开(公告)号:US20080242910A1

    公开(公告)日:2008-10-02

    申请号:US12115788

    申请日:2008-05-06

    IPC分类号: C07C1/20

    摘要: The average cycle propylene selectivity of an oxygenate to propylene (OTP) process using one or more fixed beds of a dual-function oxygenate conversion catalyst is substantially enhanced by the use of moving bed reactor technology in the hydrocarbon synthesis portion of the OTP flow scheme in lieu of fixed bed technology coupled with the selection of a catalyst on-stream cycle time of 200 hours or less. Those provisions 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 propylene average cycle yield at essentially start-of-cycle levels. The propylene average cycle yield improvement enabled by the present invention over that achieved by the fixed bed system of the prior art using the same or a similar catalyst system 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固定床的含氧化合物对丙烯(OTP)方法的平均循环丙烯选择性通过在OTP流动方案的烃合成部分中使用移动床反应器技术而显着增强 固定床技术的替代加上选择催化剂在线循环时间为200小时以下。 这些规定将催化剂上的焦炭沉积物积聚到不会显着降低双重功能催化剂活性,含氧化合物转化率和丙烯选择性的水平,从而在基本上循环水平的初始阶段维持丙烯平均循环产率。 通过使用相同或相似的催化剂体系的现有技术的固定床系统实现的本发明的丙烯平均循环产率提高约为1.5至5.5重量%或更多。

    Purge Gas Streams to Stagnant Zones within Oxygenate-to-Olefin Reactor
    52.
    发明申请
    Purge Gas Streams to Stagnant Zones within Oxygenate-to-Olefin Reactor 有权
    将气流吹入含氧烯烃反应器内的停滞区域

    公开(公告)号:US20080207973A1

    公开(公告)日:2008-08-28

    申请号:US12116253

    申请日:2008-05-07

    IPC分类号: C07C1/00 B01J8/04

    摘要: The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor the oxygenates with a catalyst to produce light olefins and wherein the reactor comprises at least two zones, a first zone wherein gas circulates at a faster rate than a second zone wherein a gas circulates at a slower rate; and inserting a quantity of inert gas into the second zone to increase circulation of any materials located in said second zone. The invention prevents accumulation of undesirable by-products within stagnant zones within the reactor and reduces the amount of coke deposited on catalyst or on surfaces within these zones.

    摘要翻译: 本发明包括将含氧化合物转化为烯烃的方法,包括在反应器内使含氧化合物与催化剂接触以产生轻质烯烃,并且其中反应器包括至少两个区域,第一区域,其中气体以比第二区域更快的速率循环 其中气体以较慢的速率循环; 以及将一定数量的惰性气体插入所述第二区域以增加位于所述第二区域中的任何材料的循环。 本发明防止不期望的副产物在反应器内的停滞区内积聚,并减少沉积在催化剂上或在这些区域内的表面上的焦炭的量。

    Process for removal of oxygenates from a paraffin stream
    53.
    发明授权
    Process for removal of oxygenates from a paraffin stream 有权
    从石蜡流中除去含氧化合物的方法

    公开(公告)号:US07368618B2

    公开(公告)日:2008-05-06

    申请号:US11457889

    申请日:2006-07-17

    IPC分类号: C07C5/327

    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的进料流送入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。

    Catalytic reforming process with multiple zones
    54.
    发明授权
    Catalytic reforming process with multiple zones 失效
    催化重整过程与多个区域

    公开(公告)号:US5885439A

    公开(公告)日:1999-03-23

    申请号:US963739

    申请日:1997-11-04

    申请人: Bryan K. Glover

    发明人: Bryan K. Glover

    CPC分类号: C10G59/02

    摘要: A hydrocarbon feedstock is catalytically reformed in a sequence comprising a first bifunctional-catalyst reforming zone, a zeolitic-reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic zeolite, and a terminal bifunctional catalyst reforming zone. The process combination permits higher severity, higher aromatics yields and/or increased throughput relative to the known art, and is particularly useful in connection with moving-bed reforming facilities with continuous catalyst regeneration.

    摘要翻译: 烃原料以包含第一双官能催化剂重整区,含有包含铂族金属和非酸性沸石的催化剂的沸石重整区和末端双官能催化剂重整区的顺序进行催化重整。 相对于已知技术,该方法组合允许更高的苛刻度,更高的芳族化合物产率和/或增加的产量,并且在连续催化剂再生的移动床重整设备中特别有用。

    Process for producing diisopropyl ether from propane
    55.
    发明授权
    Process for producing diisopropyl ether from propane 失效
    从丙烷生产二异丙醚的方法

    公开(公告)号:US5750800A

    公开(公告)日:1998-05-12

    申请号:US556117

    申请日:1995-11-09

    IPC分类号: C07C5/333 C07C41/05 C07C41/00

    摘要: An integrated process to produce diisopropyl ether from propane has been developed. In a first reaction zone the propane in a feedstock, after any hydrocarbons containing four or more carbon atoms are removed from the feedstock via fractionation, is dehydrogenated in the presence of a dehydrogenation catalyst to form propylene. After removing hydrogen, the propane and propylene mixture generated in the first reaction zone is separated into a propane enriched stream and a propylene enriched stream where the propylene enriched stream contains at least 65 mass % propylene. The propane enriched stream is recycled to the feedstock fractionation unit, and the propylene of the propylene enriched stream is reacted with water in a second reaction zone in the presence of an acidic catalyst to form isopropyl alcohol which is concurrently reacted with propylene to produce diisopropyl ether. A portion of the second reaction zone effluent is recycled to the second reaction zone, and the remainder may be collected or further separated to provide a high purity diisopropyl ether product. A variant to produce high purity propylene as well as diisopropyl ether is also discussed.

    摘要翻译: 已经开发了从丙烷生产二异丙醚的综合方法。 在第一反应区中,原料中的丙烷在含有四个或更多个碳原子的烃通过分馏从原料中除去后,在脱氢催化剂存在下脱氢形成丙烯。 除去氢气后,在第一反应区产生的丙烷和丙烯混合物分离成富丙烷流和富丙烯流,其中富含丙烯的料流含有至少65质量%的丙烯。 将富丙烷流再循环至原料分馏装置,在酸性催化剂存在下,使丙烯富集物流的丙烯与第二反应区中的水反应形成异丙醇,同时与丙烯反应产生二异丙醚 。 第二反应区流出物的一部分再循环至第二反应区,其余部分可以被收集或进一步分离以提供高纯度的二异丙醚产物。 还讨论了生产高纯度丙烯以及二异丙基醚的变体。

    Screenless internals for radial flow reactors
    56.
    发明授权
    Screenless internals for radial flow reactors 有权
    径向流动反应器的无屏蔽内部件

    公开(公告)号:US08747768B2

    公开(公告)日:2014-06-10

    申请号:US12711278

    申请日:2010-02-24

    IPC分类号: B01J8/12

    CPC分类号: B01J8/12 B01J8/008 B01J8/085

    摘要: An apparatus for contacting a bed of particulate material with a cross flowing fluid, which maintains the bed of particulate material within a retention volume. The apparatus includes partitions for retaining particles, with apertures disposed within the partitions. The apertures are covered by louvers that extend above the edges of the apertures to prevent solid particles from spilling through inlet apertures.

    摘要翻译: 用于使颗粒材料床与交叉流动流体接触的装置,其将颗粒材料床保持在保持体积内。 该装置包括用于保持颗粒的分隔物,孔中设置在隔板内。 这些孔由在孔的边缘上方延伸的百叶窗覆盖以防止固体颗粒溢出入口孔。