Oxygenate to olefin process
    37.
    发明授权
    Oxygenate to olefin process 有权
    氧化烯到烯烃工艺

    公开(公告)号:US06965057B2

    公开(公告)日:2005-11-15

    申请号:US10807818

    申请日:2004-03-24

    摘要: The invention relates to a process for converting an oxygenate feedstock into an olefin product stream comprising (a) contacting an oxygenate feedstock with a molecular sieve catalyst in a reactor under conditions effective to convert the feedstock into an olefin product stream and to form carbonaceous deposits on the catalyst; (b) contacting at least a portion of the catalyst having said carbonaceous deposits with an oxygen containing gas under conditions effective to obtain a regenerated catalyst having a reduced carbonaceous deposit level and having an increased molecular oxygen content; (c) removing at least 60% by volume of said molecular oxygen from the regenerated catalyst based upon the total volume of molecular oxygen; (d) returning said regenerated catalyst to said reactor; and (e) repeating steps (a)–(d).

    摘要翻译: 本发明涉及一种将含氧化合物原料转化成烯烃产物流的方法,该方法包括(a)在有效将原料转化成烯烃产物流并形成碳质沉积物的条件下,使反应器中的含氧化合物原料与分子筛催化剂接触 催化剂; (b)在有效获得具有降低的碳沉积物水平并且具有增加的分子氧含量的再生催化剂的条件下使至少一部分具有所述碳质沉积物的催化剂与含氧气体接触; (c)基于分子氧的总体积从再生催化剂中除去至少60体积%的所述分子氧; (d)将所述再生催化剂返回到所述反应器; 和(e)重复步骤(a) - (d)。

    Di-isopropyl ether synthesis and dry product recovery
    38.
    发明授权
    Di-isopropyl ether synthesis and dry product recovery 失效
    二异丙醚合成和干燥产物回收

    公开(公告)号:US5986148A

    公开(公告)日:1999-11-16

    申请号:US101111

    申请日:1993-08-02

    IPC分类号: C07C41/05 C07C41/00

    CPC分类号: C07C41/05 Y02P20/582

    摘要: An improved process for production of diisopropyl ether by conversion of hydrocarbon feedstock containing propene, propane and C.sub.2 -- light gas components. The overall process steps include, (optionally) prefractionating fresh feedstock containing propene, propane and C.sub.2 -- light gas components to provide a reactor feedstream rich in propene; contacting the feedstock and water in a catalytic reactor with acidic catalyst under olefin hydration and etherification conditions; and recovering from the catalytic reactor a liquid reactor effluent stream containing diisopropyl ether, isopropanol, water, unreacted propene, propane, oligomer and C.sub.2 -- light gas components. DIPE product containing C.sub.6 + oligomer is recovered by separating the liquid effluent stream in a stripper column, and extracting the DIPE-rich liquid with water. An improved separation process is employed for removing water to provide DIPE liquid product substantially free of water.

    摘要翻译: 通过转化含有丙烯,丙烷和C2轻质气体成分的烃原料来改进制备二异丙醚的方法。 总体工艺步骤包括(任选地)预分馏含有丙烯,丙烷和C 2-轻质气体成分的新鲜原料,以提供富含丙烯的反应器进料流; 在烯烃水合和醚化条件下,用酸性催化剂在催化反应器中使原料和水接触; 并从催化反应器中回收含有二异丙基醚,异丙醇,水,未反应的丙烯,丙烷,低聚物和C2轻质气体组分的液体反应器流出物流。 通过分离汽提塔中的液体流出物流,并用水萃取富含DIPE的液体,回收含有C6 +低聚物的DIPE产物。 采用改进的分离方法去除水以提供基本上不含水的DIPE液体产物。

    Di-isopropyl ether production
    39.
    发明授权
    Di-isopropyl ether production 失效
    二异丙醚生产

    公开(公告)号:US5324865A

    公开(公告)日:1994-06-28

    申请号:US20964

    申请日:1993-02-22

    摘要: A process for production of diisopropyl ether by conversion of hydrocarbon feedstock containing propene, propane and C.sub.2 - light gas components, including the steps of: optionally, prefractionating fresh feedstock containing propene, propane and C.sub.2 - light gas components to provide a reactor feedstream rich in propene; contacting the feedstock and water in a catalytic reactor with acidic catalyst under olefin hydration and etherification conditions; and recovering from the catalytic reactor a liquid reactor effluent stream containing diisopropyl ether, isopropanol, water, unreacted propene, propane and C.sub.2 - light gas components. Improved operation is achieved by separating the liquid effluent stream in a vertical stripper column; recovering an overhead vapor stream containing propene, propane and C.sub.2 - light gas components from the stripper column; cooling the overhead vapor stream to provide a reflux stream rich in condensed propene and propane; removing the C.sub.2 - light gas components from condensed; recycling the reflux stream to an upper contact portion of the stripper column; and recovering a predominantly C3 recycle stream from the upper contact portion of the stripper column. Optionally, the C3 recycle stream may be passed to the to the prefractioning step for propene enrichment with fresh feedstock.

    摘要翻译: 通过转化含有丙烯,丙烷和C2轻质气体组分的烃原料来生产二异丙醚的方法,包括以下步骤:任选地,将含有丙烯,丙烷和C2-轻质气体组分的新鲜原料预分馏,从而提供富含 丙烯 在烯烃水合和醚化条件下,用酸性催化剂在催化反应器中使原料和水接触; 并从催化反应器中回收含有二异丙基醚,异丙醇,水,未反应的丙烯,丙烷和C2-轻质气体组分的液体反应器流出物流。 通过在垂直汽提塔中分离液体流出物流来实现改进的操作; 从汽提塔回收含有丙烯,丙烷和C2轻质气体组分的塔顶蒸气流; 冷却塔顶蒸气流以提供富含缩合丙烯和丙烷的回流; 将C2轻质气体组分从冷凝中除去; 将回流流循环到汽提塔的上接触部分; 并从汽提塔的上部接触部分回收主要为C3的循环物流。 任选地,可以将C3循环流传递至用于用新鲜原料进行丙烯富集的预分馏步骤。