公开(公告)号：US20150307411A1

公开(公告)日：2015-10-29

申请号：US14368547

申请日：2012-12-21

Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. ,  SHELL OIL COMPANY

Inventor： Ye Mon CHEN ,  Timothy Michael NISBET ,  Sivakumar SADASIVAN VIJAYAKUMARI ,  Jeroen WESTRENEN

IPC: C07C1/20 ,  C07C4/06

CPC classification number: C07C1/20 ,  C07C4/06 ,  C07C2529/40 ,  Y02P30/42 ,  C07C11/04 ,  C07C11/06

Abstract: The present invention provides a process for preparing ethylene and/or propylene, comprising the steps of providing an oxygenate feed comprising oxygenate and C4 olefins to a first reaction zone; contacting the oxygenate feed with a first zeolite-comprising catalyst and retrieving from the first reaction zone a first effluent stream comprising at least C2 to C5 olefins; separating the first effluent stream into at least: a first product stream comprising C2 and/or C3 olefins; a second fraction comprising C4 olefins; a third fraction comprising C5 olefins; and recycling at least part of the second fraction to the first reaction zone as part of the oxygenate feed; providing an olefinic feed comprising C5 olefins to a second reaction zone, wherein the olefinic feed comprises at least part of the third fraction; and contacting in the second reaction zone the olefinic feed with a second zeolite-comprising catalyst at a temperature in the range of from 500 to 700° C. and retrieving from the second reaction zone a second effluent stream comprising at least C2 to C3 olefins.

Abstract translation: 本发明提供一种制备乙烯和/或丙烯的方法，包括以下步骤：向第一反应区提供含氧化合物和C 4烯烃的含氧化合物进料; 使含氧化合物进料与第一含沸石催化剂接触并从第一反应区回收包含至少C 2 -C 5烯烃的第一流出物流; 将第一流出物流分离成至少：包含C2和/或C3烯烃的第一产物流; 包含C4烯烃的第二级分; 包含C5烯烃的第三级分; 并且将至少部分第二级分再循环到第一反应区作为含氧化合物进料的一部分; 向第二反应区提供包含C5烯烃的烯烃进料，其中所述烯烃进料包含所述第三馏分的至少一部分; 并且在第二反应区中使烯属进料与第二含沸石催化剂在500-700℃的温度下接触，并从第二反应区回收包含至少C2-C3烯烃的第二流出物流。