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    • 15. 发明专利
    • Process for preparing ethylene and/or propylene
    • AU2013285980A1
    • 2015-01-22
    • AU2013285980
    • 2013-07-01
    • SHELL INT RESEARCH
    • CHEWTER LESLIE ANDREWCHEN YE-MONNISBET TIMOTHY MICHAELSADASIVAN VIJAYAKUMARI SIVAKUMARVAN WESTRENEN JEROEN
    • B01J29/40B01J29/90B01J31/12C07C1/20C10G3/00
    • The present invention provides a process for preparing ethylene and/or propylene, wherein oxygenates and olefins are converted to ethylene and/or propylene over a zeolite-comprising catalyst, comprising the steps of: a) reacting in a first reactor an oxygenate feed over the zeolite-comprising catalyst at a temperature in the range of from 350 to 1000 °C and retrieving from the first reactor a first reactor effluent stream comprising gaseous products, including ethylene and/or propylene, and zeolite-comprising catalyst; b) reacting in a second reactor an olefin feed over the zeolite-comprising catalyst at a temperature in the range of from 500 to 700 °C and retrieving from the second reactor a second reactor effluent stream comprising gaseous products, including ethylene and/or propylene, and zeolite-comprising catalyst; c) providing the first and second reactor effluent stream to one or more gas/solid separators to retrieve zeolite-comprising catalyst from the first and second reactor effluent; d) providing part of the zeolite-comprising catalyst retrieved in step (c) to the first reactor; e) regenerating another part of the zeolite-comprising catalyst retrieved in step (c) by contacting the zeolite-comprising catalyst with oxygen at elevated temperatures to provide a hot regenerated zeolite-comprising catalyst; and f) providing part of the hot regenerated zeolite-comprising catalyst to the first reactor and another part of the hot regenerated zeolite-comprising catalyst to the second reactor. The invention further provides a system suitable for preparing ethylene and propylene and the use thereof.