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    • 3. 发明授权
    • Process for preparing ethylene and propylene
    • 制备乙烯和丙烯的方法
    • US08704027B2
    • 2014-04-22
    • US13606189
    • 2012-09-07
    • Leslie Andrew ChewterRajaram RameshJeroen Van Westrenen
    • Leslie Andrew ChewterRajaram RameshJeroen Van Westrenen
    • C07C2/00
    • C07C1/22C07C1/20C07C4/06C07C29/48C07C2529/42C07C2529/70C07C2529/83C07C2529/85C07D301/03Y02P30/42C07C11/04C07C11/06
    • 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.
    • 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。
    • 9. 发明申请
    • PROCESS FOR THE REGENERATION OF A CATALYST
    • 催化剂再生方法
    • US20130225394A1
    • 2013-08-29
    • US13597471
    • 2012-08-29
    • Jose Atilio QUEVEDO ENRIQUEZLeslie Andrew ChewterJeroen Van Westrenen
    • Jose Atilio QUEVEDO ENRIQUEZLeslie Andrew ChewterJeroen Van Westrenen
    • B01J29/90
    • B01J29/90C07C1/20Y02P20/584Y02P30/42C07C11/02
    • Process for the regeneration of an at least partially coked molecular sieve catalyst comprising introducing the at least partially coked catalyst into a regenerator; introducing into the regenerator an oxygen-containing gas to regenerate at least part of the at least partially coked catalyst, thereby producing a gaseous mixture and at least partially regenerated catalyst; recovering part of the at least partially regenerated catalyst; analysing the at least partially regenerated catalyst to control the burning rate of the coke present on the at least partially coked catalyst in the regenerator by adjusting one or more conditions of the regeneration of the at least partially coked catalyst on the basis of the analysis of the at least partially regenerated catalyst; and separating at least partially regenerated catalyst and at least part of the gaseous mixture as obtained in step (b).
    • 一种用于再生至少部分焦化的分子筛催化剂的方法,包括将至少部分焦化的催化剂引入再生器中; 向所述再生器中引入含氧气体以再生所述至少部分焦化的催化剂的至少一部分,由此产生气态混合物和至少部分再生的催化剂; 回收所述至少部分再生的催化剂的一部分; 分析所述至少部分再生的催化剂以通过基于对所述至少部分再生催化剂的分析来调节所述至少部分焦化的催化剂的再生的一个或多个条件来控制存在于所述再生器中的所述至少部分焦化的催化剂上的焦炭的燃烧速率 至少部分再生催化剂; 以及分离至少部分再生的催化剂和步骤(b)中获得的至少部分气态混合物。