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    METHOD FOR START-UP OF AN OXYGENATE-TO-OLEFIN PROCESS
    1.
    发明申请
    METHOD FOR START-UP OF AN OXYGENATE-TO-OLEFIN PROCESS 失效
    启动氧化过程的方法

    公开(公告)号：US20130245294A1

    公开(公告)日：2013-09-19

    申请号：US13606308

    申请日：2012-09-07

    申请人： Leslie Andrew CHEWTER ,  Rajaram RAMESH ,  Sivakumar SADASIVAN VIJAYAKUMARI ,  Jeroen VAN WESTRENEN

    发明人： Leslie Andrew CHEWTER ,  Rajaram RAMESH ,  Sivakumar SADASIVAN VIJAYAKUMARI ,  Jeroen VAN WESTRENEN

    IPC分类号： C07C1/22 ,  C07D301/03 ,  C07C29/48

    CPC分类号： C07C1/22 ,  C07C1/20 ,  C07C29/48 ,  C07C41/06 ,  C07C2529/40 ,  C07C2529/70 ,  C07D301/03 ,  Y02P30/42 ,  C07C11/06 ,  C07C11/04 ,  C07C43/046

    摘要： The present invention provides a method for start-up of an Oxygenate-to-Olefins process, which process comprises the steps: a) providing an oxygenate-comprising feedstock to an Oxygenate-to-Olefins reaction zone and contacting the feedstock with a zeolite-comprising catalyst at a temperature in the range of from 450 to 700° C. ° C., to obtain an reaction product containing olefins; b) separating the reaction product obtained in step a) in at least a product fraction containing ethylene and/or propylene and a product fraction containing C4+ olefins; c) recycling at least part of the C4+ olefins in the product fraction containing C4+ olefins to the Oxygenate-to-Olefins reaction zone in step (a), characterised in that upon start-up the oxygenate-comprising feedstock initially comprises a first amount of externally supplied tert-alkyl ether and subsequently the amount of externally supplied tert-alkyl ether in the oxygenate-comprising feedstock is reduced.

    摘要翻译： 本发明提供了一种启动氧化烯 - 烯烃工艺的方法，该方法包括以下步骤：a）将含氧化合物的原料提供到氧化烯 - 烯烃反应区，并使原料与沸石 - 在450-700℃的温度范围内包含催化剂，得到含有烯烃的反应产物; b）将至少含有乙烯和/或丙烯的产物级分和含有C4 +烯烃的产物级分的步骤a）中获得的反应产物分离; c）在步骤（a）中将至少部分含有C4 +烯烃的产物级分中的C4 +烯烃再循环到步骤（a）中的氧化烯 - 烯烃反应区，其特征在于，在启动时，含氧化合物原料最初包含第一量 外部供应的叔烷基醚，随后在含氧化合物的原料中外部供应的叔烷基醚的量减少。

    PROCESS FOR PREPARING ETHYLENE AND PROPYLENE
    3.
    发明申请
    PROCESS FOR PREPARING ETHYLENE AND PROPYLENE 失效
    制备乙烯和丙烯的方法

    公开(公告)号：US20130237713A1

    公开(公告)日：2013-09-12

    申请号：US13606189

    申请日：2012-09-07

    申请人： Leslie Andrew CHEWTER ,  Rajaram RAMESH ,  Jeroen VAN WESTRENEN

    发明人： Leslie Andrew CHEWTER ,  Rajaram RAMESH ,  Jeroen VAN WESTRENEN

    IPC分类号： C07C1/22 ,  C07D301/03 ,  C07C29/48

    CPC分类号： C07C1/22 ,  C07C1/20 ,  C07C4/06 ,  C07C29/48 ,  C07C2529/42 ,  C07C2529/70 ,  C07C2529/83 ,  C07C2529/85 ,  C07D301/03 ,  Y02P30/42 ,  C07C11/04 ,  C07C11/06

    摘要： The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of contacting a stream comprising C4+ olefins with a zeolite-comprising catalyst to retrieve an olefinic product stream comprising ethylene and/or propylene, and a C4+ hydrocarbon fraction, comprising paraffins, normal olefins and iso-olefins. The C4+ hydrocarbon fraction is subjected to an etherification process with wherein at least part of the iso-olefins are converted with methanol and/or ethanol to an tert-alkyl ether and an etherification product stream is retrieved and separated into an ether-enriched stream and an iso-olefin-depleted C4+ hydrocarbon stream. Part of the iso-olefin-depleted C4+ hydrocarbon stream from the process to purge part of the paraffinic C4+ hydrocarbons while another part of the iso-olefin-depleted C4+ hydrocarbon stream is recycled. The tert-alkyl ether in the ether-enriched stream is converted to ethylene and/or propylene by contacting at least part of the ether-enriched stream with a molecular sieve-comprising catalyst.

    摘要翻译： 本发明提供一种制备乙烯和/或丙烯的方法，包括以下步骤：使包含C4 +烯烃的料流与含沸石的催化剂接触以回收包含乙烯和/或丙烯的烯烃产物流和C4 +烃馏分，其包含 石蜡，正烯烃和异烯烃。 对C4 +烃馏分进行醚化处理，其中至少部分异烯烃用甲醇和/或乙醇转化成叔烷基醚，并将醚化产物流回收并分离成富醚流， 一种异烯烃贫化的C4 +烃流。 来自该方法的部分烯烃贫化的C4 +烃流，以清除部分链烷烃C4 +烃，而另一部分异烯烃贫化的C4 +烃流被回收。 通过使至少部分富含乙醚的料流与含分子筛的催化剂接触，使富醚流中的叔烷基醚转化为乙烯和/或丙烯。

    PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE
    4.
    发明申请
    PROCESS FOR PREPARING ETHYLENE AND/OR PROPYLENE 审中-公开
    制备乙烯和/或丙烯的方法

    公开(公告)号：US20130066032A1

    公开(公告)日：2013-03-14

    申请号：US13606239

    申请日：2012-09-07

    申请人： Leslie Andrew CHEWTER ,  Rajaram RAMESH ,  Sivakumar SADASIVAN VIJAYAKUMARI ,  Jeroen VAN WESTRENEN

    发明人： Leslie Andrew CHEWTER ,  Rajaram RAMESH ,  Sivakumar SADASIVAN VIJAYAKUMARI ,  Jeroen VAN WESTRENEN

    IPC分类号： C07C4/06 ,  C08F110/06 ,  C08F110/02 ,  C07C29/03 ,  C07D301/03

    CPC分类号： C07C41/06 ,  C07C4/06 ,  C07C5/2775 ,  C07C7/14891 ,  C07C2529/85 ,  C07D301/03 ,  C07C43/046 ,  C07C11/04 ,  C07C11/06 ,  C07C11/08

    摘要： The present invention provides a process for preparing ethylene and/or propylene, comprising providing a hydrocarbon stream, comprising C4+ normal and C4+ iso-olefins; subjecting the hydrocarbon stream to an etherification process wherein the iso-olefins are converted with alcohol to an tert-alkyl ether, and retrieving a first etherification product stream; separating the first etherification product stream into a first ether-enriched stream and an iso-olefin-depleted hydrocarbon stream; converting the normal olefins in the iso-olefin-depleted hydrocarbon stream to ethylene and/or propylene with a molecular sieve-comprising catalyst and retrieving an olefinic product; decomposing the tert-alkyl ether in the ether-enriched stream into alcohol and an iso-olefin; isomerising the obtained iso-olefins to normal-olefins and retrieving an normal-olefin-enriched hydrocarbon stream; and converting the normal olefins in the normal-olefin-enriched hydrocarbon stream to ethylene and/or propylene by contacting the normal-olefin-enriched hydrocarbon stream with a molecular sieve-comprising catalyst and retrieving an olefinic product.

    摘要翻译： 本发明提供一种制备乙烯和/或丙烯的方法，其包括提供包含C4 +正构和C4 +异烯烃的烃流; 使烃流进行醚化方法，其中异烯烃用醇转化成叔烷基醚，并回收第一醚化产物流; 将第一醚化产物流分离成第一醚富集流和异烯烃贫化烃流; 将含异构烯烃的烃流中的正烯烃转化成含有分子筛的催化剂的乙烯和/或丙烯，并回收烯烃产物; 将富醚流中的叔烷基醚分解成醇和异烯烃; 将获得的异烯烃异构化成正烯烃并回收正链烯烃的烃流; 以及通过使富含正烯烃的烃流与含分子筛的催化剂接触并回收烯烃产物，将富含正烯烃的烃流中的正链烯烃转化成乙烯和/或丙烯。

    SEMI-PERSISTENT RESOURCE ALLOCATION METHOD FOR UPLINK TRANSMISSION IN WIRELESS PACKET DATA SYSTEMS
    6.
    发明申请
    SEMI-PERSISTENT RESOURCE ALLOCATION METHOD FOR UPLINK TRANSMISSION IN WIRELESS PACKET DATA SYSTEMS 有权
    无线分组数据系统中上行链路传输的半密集资源分配方法

    公开(公告)号：US20080310333A1

    公开(公告)日：2008-12-18

    申请号：US11924258

    申请日：2007-10-25

    申请人： Kumar BALACHANDRAN ,  Havish KOORAPATY ,  Rajaram RAMESH

    发明人： Kumar BALACHANDRAN ,  Havish KOORAPATY ,  Rajaram RAMESH

    IPC分类号： H04B7/00

    CPC分类号： H04W72/0446 ,  H04L1/08 ,  H04L1/1812 ,  H04L1/1825 ,  H04L1/1887 ,  H04W72/0406

    摘要： A wireless telecommunications network supplies a semi-persistent resource that a wireless station can use for special purposes (such as a retransmission of packets for ARQ purposes or a control signal. The semi-persistent resource can be allocated by the system to other terminals if, e.g., a retransmission is not required. Since a retransmission is generally performed in response to a NACK received from a base station, the NACK may itself serve as a token that permits the wireless station to use the semi-persistent allocation. Thus, the technology includes, e.g., a method for resource allocation on a semi-persistent basis and efficient signaling for the usage of such allocation.

    摘要翻译： 无线电信网络提供无线站可以用于特殊目的的半持久资源，例如用于ARQ目的的分组重传或控制信号。 如果不需要再传送，则半持久资源可以由系统分配给其他终端。 由于通常响应于从基站接收到的NACK来执行重传，所以NACK本身可以用作允许无线站使用半持久分配的令牌。 因此，该技术包括例如在半持久基础上的资源分配方法和用于这种分配的使用的有效信令。