Treating oxygenate containing feedstreams in the conversion of oxygenates to olefins
    5.
    发明授权
    Treating oxygenate containing feedstreams in the conversion of oxygenates to olefins 有权
    在含氧化合物转化为烯烃的过程中,处理含氧化合物的进料流

    公开(公告)号:US07385100B2

    公开(公告)日:2008-06-10

    申请号:US11787337

    申请日:2007-04-16

    Abstract: This invention is directed to removing contaminants from an oxygenate-containing feedstream for an oxygenate to olefin reaction system. Oxygenate feeds used in the conversion of oxygenates to olefins, and which contain contaminants, are heated to form a vapor stream and a liquid stream. The heating is conducted so that a majority of the metalloaluminophosphate molecular sieve catalyst contaminants is contained in the liquid stream. The vapor stream is separated from the liquid stream, and the separated vapor stream is contacted with the metalloaluminophosphate molecular sieve catalyst to form olefin product. The heating of the feedstream and the separation of the vapor stream can be carried out in one or more stages.

    Abstract translation: 本发明涉及从用于含氧化合物到烯烃反应体系的含氧化合物的进料流中除去污染物。 用于将含氧化合物转化为烯烃并且含有污染物的氧化物进料被加热以形成蒸汽流和液体流。 进行加热,使得大部分金属铝磷酸盐分子筛催化剂污染物被包含在液体流中。 将蒸汽流与液体流分离,并将分离的蒸汽流与金属铝磷酸盐分子筛催化剂接触以形成烯烃产物。 进料流的加热和蒸汽流的分离可以在一个或多个阶段中进行。

    Olefin conversion catalyst regeneration
    8.
    发明授权
    Olefin conversion catalyst regeneration 失效
    烯烃转化催化剂再生

    公开(公告)号:US5405814A

    公开(公告)日:1995-04-11

    申请号:US72379

    申请日:1993-06-07

    CPC classification number: C07C41/05 C07C41/09 Y02P20/584

    Abstract: An olefin hydration catalyst is regenerated with a non-oxidizing light gas, such as hydrogen. Light olefins, especially propylene, are converted to a mixture of alcohol(s), such as isopropanol (IPA) and ether(s), such as diisopropylether (DIPE) by contacting a feed containing the olefin with water and/or alcohol with the olefin hydration catalyst. Regeneration conditions include temperatures of from about 150.degree. C. to about 550.degree. C., pressures below about 1000 psig (6900 kPa). Lower pressures of regeneration unexpectedly demonstrated more effective catalyst regeneration through greater coke removal.

    Abstract translation: 烯烃水合催化剂用非氧化性轻质气体如氢气再生。 通过使含有烯烃的进料与水和/或醇接触,将轻质烯烃,特别是丙烯转化成醇,如异丙醇(IPA)和醚,如二异丙基醚(DIPE))的混合物, 烯烃水合催化剂。 再生条件包括约150℃至约550℃的温度,低于约1000psig(6900kPa)的压力。 更低的再生压力意外地通过更大的焦炭去除表明更有效的催化剂再生。

    Catalytic olefin hydration for ether production
    9.
    发明授权
    Catalytic olefin hydration for ether production 失效
    用于生产乙烯的催化烯烃水合物

    公开(公告)号:US5162591A

    公开(公告)日:1992-11-10

    申请号:US557241

    申请日:1990-07-25

    CPC classification number: C07C41/05 C07C41/06

    Abstract: A process for production of dialkyl ether by hydration and etherification of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a catalytic reaction zone with porous solid metallosilicate acidic catalyst under olefin hydration and etherification conditions. Improvement is achieved by recovering a first fluid effluent stream from the reaction zone; splitting the first fluid effluent stream into a liquid product recovery stream and a fluid recycle stream; and passing the fluid recycle stream consisting essentially of olefin, alcohol and ether in effluent stream proportions for feeding to the reaction zone along with fresh olefinic feedstock and fresh water, wherein the amount of fluid recycle stream is sufficient to maintain a homogeneous single fluid reaction phase in the reaction zone.

    Abstract translation: 在烯烃水合和醚化条件下,通过使催化反应区中的烯属原料和水与多孔固体金属硅酸盐酸性催化剂接触,通过使包含至少一种低级烯烃的烯烃原料进行水合和醚化来生产二烷基醚的方法。 通过从反应区回收第一流体流出物流来实现改善; 将第一流体流出物流分解成液体产物回收流和流体循环流; 并将基本上由烯烃,醇和醚组成的流体循环料流以流出物流的比例通过,以与新鲜的烯烃原料和淡水一起进料到反应区,其中流体循环流的量足以保持均匀的单一流体反应相 在反应区。

    Zeolite catalysis process for conversion of diene-containing olefins to
aromatic hydrocarbons
    10.
    发明授权
    Zeolite catalysis process for conversion of diene-containing olefins to aromatic hydrocarbons 失效
    用于将含二烯烃烯烃转化为芳族烃的沸石催化方法

    公开(公告)号:US4751339A

    公开(公告)日:1988-06-14

    申请号:US6089

    申请日:1987-01-23

    CPC classification number: C07C15/00 C07C2/00 C07C2529/40 Y02P20/584

    Abstract: A technique for continuous conversion of diene-containing aliphatic hydrocarbon feedstock to heavier hydrocarbon products wherein the feedstock is contacted at elevated temperature under endothermic high severity reaction conditions with a fluidized bed of acidic zeolite fine catalyst particles, comprising methods and means for:maintaining the fluidized catalyst bed in a vertical reactor having a turbulent reaction zone by passing vapor upwardly through the reaction zone at a velocity greater than dense bed transition velocity to a turbulent regime and less than transport velocity for the average catalyst particle;feeding a continuous stream of feedstock into the reaction zone, said feedstream comprising sufficient C.sub.3.sup.+ alkanes to require net endothermic reaction conditions;withdrawing a portion of coked catalyst from the reaction zone, oxidatively regenerating the withdrawn catalyst, heating the catalyst substantially above process temperature in the fluidized bed reactor, and returning hot regenerated catalyst to the reaction zone at a rate to control catalyst activity and reaction temperature under conditions of reaction severity to effect feedstock conversion to an aromatics-rich hydrocarbon effluent stream; andseparating an aromatics-rich product from the fluidized bed effluent stream.Aromatics yield is increased by recovering a recycle stream comprising C.sub.5.sup.+ aliphatic hydrocarbons from the fluidized bed effluent stream for further conversion in the fluidized bed to increase aromatics product yield.

    Abstract translation: 一种用于将含二烯烃的脂族烃原料连续转化为较重烃产物的技术,其中原料在吸热高度苛刻度的反应条件下在升高的温度下与酸性沸石细催化剂颗粒的流化床接触,包括以下步骤: 催化剂床在具有湍流反应区的立式反应器中,通过使蒸气向上通过反应区,速度大于致密床转变速度至湍流状态且小于平均催化剂颗粒的输送速度; 将连续的原料流送入反应区,所述进料流包含足够的C3 +烷烃以需要净吸热反应条件; 将一部分焦化催化剂从反应区中取出,氧化再生催化剂,在流化床反应器中将催化剂加热至高于工艺温度,并将热再生催化剂返回到反应区,以控制催化剂活性和反应温度 使原料转化成富含芳烃的烃流出物流的反应条件; 以及从流化床流出物流中分离富含芳烃的产物。 通过从流化床流出物流中回收包含C5 +脂族烃的再循环料流以在流化床中进一步转化以提高芳族化合物产物产率来提高芳族化合物产率。

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