METHOD AND DEVICE FOR PRODUCING LOWER OLEFINS FROM OXYGENATES

摘要

The invention relates to a method and device for producing at least one lower olefin from a first reaction mixture (11) containing oxygenates by reaction on a catalyst (20) to a second reaction mixture (21) containing olefins and paraffins. The second reaction mixture (21) is guided through a separation system (300) in which a first product flow (31) containing the at least one olefin and at least one paraffin-enriched fraction (321) are removed and at least part of the remaining product flow (322) is returned to the catalyst (20).