Process for the preparation of an olefinic product from an oxygenate

    公开(公告)号:US09878963B2

    公开(公告)日:2018-01-30

    申请号:US14655345

    申请日:2013-12-24

    Abstract: The invention relates to process for the preparation of an olefinic product comprising ethylene and/or propylene from an oxygenate, the process comprising the following steps: a) an oxygenate conversion step wherein a gaseous effluent comprising olefins and a water-soluble oxygenate is obtained; b) separation of water from the effluent; c) compression of the effluent; d) acid gas removal from the compressed gaseous effluent obtained in step c), wherein the compressed gaseous effluent is treated with a caustic solution in a caustic tower; and e) separating the olefinic product from the gaseous effluent treated in step d), wherein, in a final stage in the caustic tower, water-depleted compressed gaseous effluent is treated with a water stream that is essentially free of water-soluble oxygenate and a spent water stream comprising caustic and water-soluble oxygenate is obtained, which spent water stream is withdrawn from the process.

    Processes for the preparation of an olefinic product

    公开(公告)号:US09828306B2

    公开(公告)日:2017-11-28

    申请号:US14439292

    申请日:2013-10-29

    Abstract: The invention provides a process for preparing an olefin, comprising: (a) reacting an oxygenate, in a reaction zone in the presence of a molecular sieve catalyst, at a temperature from 350 to 1000° C., to produce a effluent stream, comprising at least oxygenate, olefin, water and acidic by-products; (b) cooling the reaction effluent stream by an indirect heat exchange to a temperature greater than the dew point temperature of effluent stream; (c) further rapidly cooling the effluent stream to a temperature lower than the dew point temperature of the effluent stream by direct injection of an aqueous liquid into the effluent stream, to form a quench effluent stream; and (d) passing the quench effluent stream into a quench tower and contacting the quench effluent stream with a second aqueous liquid in the presence of at least one set of internals, to produce a quench tower gaseous stream comprising the olefin.

    Process for the preparation of an olefinic product from an oxygenate
    24.
    发明授权
    Process for the preparation of an olefinic product from an oxygenate 有权
    从含氧化合物制备烯烃产物的方法

    公开(公告)号:US09505670B2

    公开(公告)日:2016-11-29

    申请号:US14655348

    申请日:2013-12-24

    Abstract: The invention relates to a process for the preparation of an olefinic product comprising ethylene and/or propylene from an oxygenate comprising: a) an oxygenate conversion step wherein a gaseous effluent comprising olefins is obtained; b) separation of water from the effluent; c) compression of the effluent; d) acid gas removal from the effluent wherein the water-depleted compressed gaseous effluent is treated with a caustic solution in a caustic tower and a non-aqueous liquid stream comprising one or more aromatic C7+ hydrocarbons is added to the caustic solution to control the formation of red oil; and e) separating the olefinic product from the gaseous effluent treated in step d).

    Abstract translation: 本发明涉及一种从含氧化合物制备包含乙烯和/或丙烯的烯烃产物的方法,包括:a)含氧化合物转化步骤,其中获得包含烯烃的气态流出物; b)将水从流出物中分离出来; c)流出物的压缩; d)从流出物中除去酸性气体,其中将贫水的压缩气体流出物用苛性塔中的苛性碱溶液和包含一种或多种芳族C 7 +烃的非水液体流加入到苛性碱溶液中以控制形成 的红油; 和e)从在步骤d)中处理的气态流出物中分离烯烃产物。

    PROCESSES FOR THE PREPARATION OF AN OLEFINIC PRODUCT
    25.
    发明申请
    PROCESSES FOR THE PREPARATION OF AN OLEFINIC PRODUCT 有权
    制备烯烃产品的方法

    公开(公告)号:US20150299067A1

    公开(公告)日:2015-10-22

    申请号:US14439267

    申请日:2013-10-29

    Abstract: The invention provides a process for the preparation of an olefinic product, comprising:(a) reacting an oxygenate feedstock, in a reaction zone in the presence of a molecular sieve catalyst, at a temperature from 350 to 1000° C., to produce a reaction effluent stream, comprising at least oxygenate, olefin, water and acidic by-products; (b) cooling the reaction effluent stream by means of an indirect heat exchange to a temperature greater than the dew point temperature of reaction effluent stream; (c) further rapidly cooling the reaction effluent stream to a temperature lower than the dew point temperature of the reaction effluent stream by direct injection of an aqueous liquid into the reaction effluent stream, to form a first quench effluent stream; and (d) separating the first quench effluent stream into a first liquid quench effluent stream and a first gaseous quench effluent stream, comprising the olefinic product.

    Abstract translation: 本发明提供了制备烯烃产物的方法,包括:(a)在分子筛催化剂存在下,在350-1000℃的温度下使反应区中的含氧原料反应,以产生 反应流出物流,至少包含含氧化合物,烯烃,水和酸性副产物; (b)通过间接热交换将反应流出物流冷却至大于反应流出物流的露点温度的温度; (c)通过将水性液体直接注入反应流出物流中,将反应流出物流进一步快速冷却到低于反应流出物流的露点温度的温度,形成第一骤冷流出物流; 和(d)将第一骤冷流出物流分离成第一液体骤冷流出物流和包含烯烃产物的第一气态骤冷流出物流。

    Process for the preparation of a lower olefin product
    26.
    发明授权
    Process for the preparation of a lower olefin product 有权
    制备低级烯烃产物的方法

    公开(公告)号:US09133077B2

    公开(公告)日:2015-09-15

    申请号:US13727826

    申请日:2012-12-27

    Abstract: A process for the preparation of an olefin product comprising ethylene, which process comprises the steps of: a) converting an oxygenate feedstock in an oxygenate-to-olefins conversion system, comprising a reaction zone in which an oxygenate feedstock is contacted with an oxygenate conversion catalyst under oxygenate conversion conditions, to obtain a conversion effluent comprising ethylene and/or propylene; b) separating at least a portion of the propylene from the conversion effluent to form a propylene stream; c) separating the remainder of the olefins from the conversion effluent; and d) recycling at least a portion of the propylene stream to step a).

    Abstract translation: 一种制备包含乙烯的烯烃产物的方法,该方法包括以下步骤:a)将含氧化合物 - 烯烃转化体系中的含氧化合物原料转化,其包含其中含氧化合物原料与含氧化合物转化率接触的反应区 催化剂,以获得包含乙烯和/或丙烯的转化流出物; b)从转化流出物中分离至少一部分丙烯以形成丙烯料流; c)从转化流出物中分离剩余的烯烃; 和d)将至少一部分丙烯流再循环到步骤a)。

    PROCESS FOR THE PRODUCTION OF ALCOHOLS
    27.
    发明申请
    PROCESS FOR THE PRODUCTION OF ALCOHOLS 有权
    生产酒精的方法

    公开(公告)号:US20150045586A1

    公开(公告)日:2015-02-12

    申请号:US14368569

    申请日:2012-12-21

    Abstract: The present invention provides a process for the production of aldehydes and/or alcohols, which process comprises the steps of: (a) reacting an oxygenate and/or olefinic feed in a reactor in the presence of a molecular sieve catalyst to form an effluent comprising olefins, comprising propylene; (b) separating the effluent comprising olefins as obtained in step (a) into at least a first olefinic product fraction comprising propylene and a second olefinic product fraction; (c) subjecting at least part of the first olefinic product fraction as obtained in step (b) to a hydroformylation process to form aldehydes; (d) separating at least part of the aldehydes as obtained in step (c) into at least a first product fraction of aldehydes and a second product fraction of aldehydes; and (e) hydrogenating at least part of the aldehydes in the first and/or second product fraction of aldehydes as obtained in step (d) to form a first product fraction of alcohols and/or a second product fraction of alcohols; (f) recycling at least part of the first and/or second product fraction of alcohols obtained in step (e) to step (a).

    Abstract translation: 本发明提供了一种生产醛和/或醇的方法,该方法包括以下步骤:(a)在分子筛催化剂存在下使反应器中的含氧化合物和/或烯烃进料反应形成流出物,其包含 烯烃,包括丙烯; (b)将步骤(a)中获得的包含烯烃的流出物分离成至少包含丙烯和第二烯属产物馏分的第一烯烃产物级分; (c)将步骤(b)中获得的至少部分第一烯属产物级分进行加氢甲酰化过程以形成醛; (d)将步骤(c)中获得的至少一部分醛分离成至少醛的第一产物级分和醛的第二产物级分; 和(e)将步骤(d)中获得的醛的第一和/或第二产物级分中的至少部分醛氢化以形成醇的第一产物级分和/或醇的第二产物级分; (f)将步骤(e)中获得的醇的第一和/或第二产物馏分的至少一部分再循环到步骤(a)。

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