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    Catalytically dehydrogenating alkylated aromatic hydrocarbons
    3.
    发明授权
    Catalytically dehydrogenating alkylated aromatic hydrocarbons 失效
    催化脱氢芳烃芳烃

    公开(公告)号：US3660510A

    公开(公告)日：1972-05-02

    申请号：US3660510D

    申请日：1970-03-30

    Applicant: BASF AG

    Inventor： KINDLER HUBERT ,  SINGLE WINFRIED

    IPC: C07C1/00 ,  C07C5/333 ,  C07C15/44 ,  C07C67/00 ,  C07C15/10

    CPC classification number: C07C5/333 ,  C07C5/3332 ,  C07C15/40

    Abstract: METHOD OF CATALYTICALLY DEHYDROGENATING AN ALKYLATED AROMATIC HYDROCARBON HAVING AT LEAST TWO CARBON ATOMS IN A SIDE-CHAIN TO A VINYLAROMATIC HYDROCARBON BY RAPIDLY PASSING THROUGH A CATALYST ZONE A FEEDSTOCK WHICH HAS BEEN HEATED TO THE REACTION TEMPERATURE AND HAS BEEN OBTAINED BY MIXING A PREHEATED MIXTURE CONTAINING THE ALKYLATED AROMATIC HYDROCARBON AND OPTIONALLY STEAM AND OPTIONALLY THE VINYLAROMATIC HYDROCARBON WITH STEAM HEATED TO A TEMPERATURE ABOVE THE TEMPERATURE OF REACTION. THE PREHEATED MIXTURE HAS A TEMPERATURE OF FROM 400* TO 620* C. AND THE STEAM HEATED TO ABOVE THE REACTION TEMPERATURE HAS A TEMPERATURE OF FROM 820* TO 1,100* C. AND THE RESULTING FEEDSTOCK HAS A BLEND TEMPERATURE OF FROM 550* TO 700* C., THE TIME TAKEN FOR MIXING THE PREHEATED MIXTURE WITH THE HEATED STEAM BEING LESS THAN 0.1 SECOND WHILE THE RESIDENCE TIME OF THE RESULTING FEEDSTOCK BETWEEN THE MIXING POINT AND THE POINT OF ENTRY INTO THE CATALYST ZONE IS LESS THAN 0.2 SECOND. THE PRODUCTS ARE IMPORTANT MONOMERS AND COMONOMERS.

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