Selectively removing undesirably sized catalyst particles from a reaction system
    21.
    发明授权
    Selectively removing undesirably sized catalyst particles from a reaction system 有权
    从反应体系中选择性地除去不期望的尺寸的催化剂颗粒

    公开(公告)号:US07090081B2

    公开(公告)日:2006-08-15

    申请号:US10656673

    申请日:2003-09-05

    IPC分类号: B07B7/00 C07C1/00

    摘要: The present invention provides various processes for selectively removing undesirably sized catalyst particles from a reaction system. In one embodiment, a plurality of catalyst particles, having a first median particle diameter, is withdrawn from the reaction system and is directed to a separation unit such as a counter flow cyclone separator. In the separation unit, the particles are separated into a small catalyst stream and a large catalyst stream, the small catalyst stream having a second median particle diameter less than the first median particle diameter, and the large catalyst stream having a third median particle diameter greater than the first median particle diameter. At least a portion of the small or large catalyst stream is then directed back to the reaction system in order to maintain a desirable particle size distribution therein.

    摘要翻译: 本发明提供了用于从反应体系中选择性除去不期望的尺寸的催化剂颗粒的各种方法。 在一个实施方案中,具有第一中值粒径的多个催化剂颗粒从反应体系中排出并被引导至分离单元如逆流旋风分离器。 在分离单元中,将颗粒分离成小的催化剂流和大的催化剂流,小的催化剂流具有小于第一中值粒径的第二中值粒径,并且大的催化剂流具有较大的第三中值粒径 比第一个中值粒径。 然后将至少一部分小或大的催化剂流引导回反应体系,以便在其中保持所需的粒度分布。

    Catalyst pretreatment with C4-C7 olefins in an oxygenate to olefins reaction system
    22.
    发明授权
    Catalyst pretreatment with C4-C7 olefins in an oxygenate to olefins reaction system 失效
    催化剂在含氧化合物到烯烃反应体系中用C4-C7烯烃预处理

    公开(公告)号:US07057083B2

    公开(公告)日:2006-06-06

    申请号:US10712952

    申请日:2003-11-12

    IPC分类号: C07C1/00

    摘要: This invention relates to processes for converting oxygenates to olefins that include a step of pretreating molecular sieve used in the conversion reaction with a C4–C7 olefin composition, which contains one or more C4–C7 olefins. Fresh or regenerated molecular sieve, which is low in carbon content, is contacted or pretreated with the olefin composition to form a hydrocarbon co-catalyst within the pore structure of the molecular sieve, and the pretreated molecular sieve containing the co-catalyst is used to convert oxygenate to a lighter olefin product.

    摘要翻译: 本发明涉及将含氧化合物转化为烯烃的方法,其包括用C 4 -C 7烯烃组合物预处理转化反应中使用的分子筛的步骤,其中含有一个 或更多的C 4 -C 7烯烃。 碳含量低的新鲜或再生分子筛与烯烃组合物接触或预处理,以在分子筛的孔结构内形成烃助催化剂,并将含有助催化剂的预处理分子筛用于 将含氧化合物转化为较轻的烯烃产物。

    Catalyst pretreatment with dimethyl ether in an oxygenate to olefins reaction system
    24.
    发明授权
    Catalyst pretreatment with dimethyl ether in an oxygenate to olefins reaction system 失效
    催化剂预处理用二甲醚在含氧化合物到烯烃反应体系中

    公开(公告)号:US07045672B2

    公开(公告)日:2006-05-16

    申请号:US10712668

    申请日:2003-11-12

    IPC分类号: C07C1/00

    摘要: This invention relates to processes for converting oxygenates to olefins and olefins to polyolefins. The processes include a step of pretreating molecular sieve used in the conversion of oxygenate to olefin with a dimethyl ether composition. Fresh or regenerated molecular sieve, which is low in carbon content, is contacted or pretreated with the dimethyl ether composition to form a hydrocarbon co-catalyst within the pore structure of the molecular sieve, and the pretreated molecular sieve containing the co-catalyst is used to convert oxygenate to a lighter olefin product.

    摘要翻译: 本发明涉及将含氧化合物转化为烯烃和烯烃到聚烯烃的方法。 该方法包括用二甲基醚组合物预处理用于将含氧化合物转化为烯烃的分子筛的步骤。 碳含量低的新鲜或再生分子筛与二甲醚组合物接触或预处理,以在分子筛的孔结构内形成烃助催化剂,并使用含有助催化剂的预处理分子筛 将含氧化合物转化为较轻的烯烃产物。