METHOD FOR PRODUCING PRODUCT OLEFINS BY CATALYTIC DEHYDRATION OF SUITABLE REACTANTS

    公开(公告)号:US20170190636A1

    公开(公告)日:2017-07-06

    申请号:US15314183

    申请日:2015-05-28

    IPC分类号: C07C1/24 C07C1/20

    摘要: The invention relates to a method for producing product olefins by catalytic dehydration of suitable reactants, comprising the steps of feeding a educt stream comprising an alcohol-water mixture into a dehydration unit, wherein the alcohol-water mixture comprises at least one alcohol and water, and converting the reactants contained in the educt stream in the dehydration unit by catalytic dehydration to a mixed reaction product stream, the dehydrating conditions in the dehydration unit being selected such that the dehydration of the alcohol comprises only a low conversion of at least one alcohol used to the desired at least one product olefin, such that the unreacted at least one alcohol in the mixed reaction product stream comprises an alcohol content ranging from 20 wt %-80 wt %.

    Process and plant for producing olefins
    67.
    发明申请

    公开(公告)号:US20170088482A1

    公开(公告)日:2017-03-30

    申请号:US15117044

    申请日:2015-02-06

    IPC分类号: C07C1/20 C07C4/04

    摘要: A method (100) for producing olefins is proposed, wherein a first gas mixture (b) is produced by means of a steam cracking process (1) and a second gas mixture (s) is produced by means of an oxygenate-to-olefin process (2), the first gas mixture (b) and the second gas mixture (s) each containing at least hydrocarbons with one to four carbon atoms. It is proposed that from the first gas mixture (b) a first fraction (h) is formed which contains at least the great majority of the hydrocarbons with four carbon atoms previously contained in the first gas mixture (b), from the second gas mixture (s) a second fraction (y) is formed which contains at least the great majority of the hydrocarbons with four carbon atoms previously contained in the second gas mixture (s), and that the hydrocarbons contained in the second fraction (y) and previously in the second gas mixture (s) are predominantly subjected in the steam cracking process (1) to cracking conditions under which any n-butane present is reacted by less than 92%. The invention further relates to an apparatus for this purpose.