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    Process for producing olefins
    9.
    发明授权
    Process for producing olefins 有权
    烯烃生产方法

    公开(公告)号：US07279012B2

    公开(公告)日：2007-10-09

    申请号：US10882722

    申请日：2004-07-01

    申请人： Keith H. Kuechler ,  Jeffrey L. Brinen ,  Philip Andrew Ruziska

    发明人： Keith H. Kuechler ,  Jeffrey L. Brinen ,  Philip Andrew Ruziska

    IPC分类号： C07C7/00

    CPC分类号： C07C11/06 ,  C07C11/04 ,  Y02P30/42 ,  Y02P30/48

    摘要： A process for producing olefins comprises providing a vapor product stream from an oxygenate to olefin reaction, the vapor product stream comprising C2 to C4 olefins, C2 to C6 carbonyl compounds and water. The vapor product stream is cooled to provide a first vapor effluent stream comprising no more than 10 wt. % water, and a liquid water-rich stream. The first vapor effluent stream, and a first wash flash vapor stream, are compressed from a first pressure to a second pressure greater than said first pressure to form a second vapor effluent stream, which is then cooled to form a cooled second effluent stream that is at least partially in the vapor state. At least part of the cooled second effluent stream is washed with a liquid alcohol-containing stream, at a third pressure greater than the first pressure but not greater than the second pressure, to produce a wash liquid stream, which comprises C3 and C4 olefins, and a wash vapor stream, which contains less C2 to C6 carbonyl compounds than the first vapor effluent stream. The wash liquid stream is exposed to a pressure of at least the first pressure but less than the third pressure to form a first wash flash liquid stream and the first wash flash vapor stream, the first wash flash vapor stream being provided for compression with the first vapor effluent stream.

    摘要翻译： 制备烯烃的方法包括提供从含氧化合物到烯烃反应的蒸汽产物流，所述蒸气产物流包含C 2至C 4烯烃，C 2 - / C 1 -C 6羰基化合物和水。 蒸气产物流被冷却以提供包含不超过10wt。 ％的水和富含液体的水。 第一蒸汽流出物流和第一洗涤闪蒸蒸气流从第一压力被压缩至大于所述第一压力的第二压力，以形成第二蒸气流出物流，然后将其冷却以形成冷却的第二流出物流，其为 至少部分处于蒸汽状态。 至少部分冷却的第二流出物流用含液体醇的流在大于第一压力但不大于第二压力的第三压力下洗涤，以产生洗涤液体流，其包含C 3 和C 4 O 3烯烃，以及与第一蒸气相比含有较少C 2 -C 6羰基化合物的洗涤蒸汽流 流出物流。 洗涤液体流暴露于至少第一压力但小于第三压力的压力以形成第一洗涤闪蒸液流和第一洗涤闪蒸蒸气流，第一洗涤闪蒸蒸气流被提供用于与第一 蒸汽流出物流。

    Recovery of ethylene and propylene from a methanol to olefin reaction system
    10.
    发明授权
    Recovery of ethylene and propylene from a methanol to olefin reaction system 有权
    乙烯和丙烯从甲醇回收到烯烃反应体系

    公开(公告)号：US07074971B2

    公开(公告)日：2006-07-11

    申请号：US10383204

    申请日：2003-03-06

    申请人： Cor F. Van Egmond ,  Jeffrey L. Brinen

    发明人： Cor F. Van Egmond ,  Jeffrey L. Brinen

    IPC分类号： C07C41/42

    CPC分类号： C07C7/04 ,  C07C11/04 ,  C07C11/06

    摘要： The present invention provides new highly-efficient separation processes and systems for separating polymerization-grade ethylene and propylene from an initial effluent stream comprising ethane, ethylene, propylene, dimethyl ether, and one or more of propane, acetylene, methyl acetylene, propadiene, methane, hydrogen, carbon monoxide, carbon dioxide and C4+ components. In one embodiment, the initial effluent stream is provided from a methanol-to-olefin reaction system. It has been discovered that the best separation of these components is realized when DME is selectively removed in a first separation step, followed by separation of the remaining components in additional separation steps.

    摘要翻译： 本发明提供了用于从包含乙烷，乙烯，丙烯，二甲醚和丙烷，乙炔，甲基乙炔，丙二烯，甲烷中的一种或多种的初始流出物流分离聚合级乙烯和丙烯的新的高效分离方法和系统 ，氢气，一氧化碳，二氧化碳和C4 +组分。 在一个实施方案中，初始流出物流由甲醇 - 烯烃反应系统提供。 已经发现，当在第一分离步骤中选择性除去DME，然后在另外的分离步骤中分离剩余组分时，实现这些组分的最佳分离。