Process for catalytically converting C10 and higher olefins to C9 and
lower olefins
    4.
    发明授权
    Process for catalytically converting C10 and higher olefins to C9 and lower olefins 失效
    将C10和更高级烯烃催化转化为C9和低级烯烃的方法

    公开(公告)号:US5120893A

    公开(公告)日:1992-06-09

    申请号:US580659

    申请日:1990-09-11

    IPC分类号: C07C4/06

    摘要: The present invention provides a highly selective catalytic cracking process for the conversion of feedstocks containing a predominant content of C.sub.10 and higher mixed olefins into C.sub.9 and lower olefin products at efficiencies of greater than 20%. said products further characterized in that the content C.sub.6 to C.sub.9 olefins is maximized while the content of C.sub.2 to C.sub.4 olefins is minimized. The process involves contacting an olefin feedstock mixture containing at least about 50 weight %, more preferably at least about 70 weight %, of C.sub.10 and higher olefins under cracking conditions with a catalyst selected from the group consisting of amorphous precipitated silica, selected crystalline silicates and aluminosilicates, namely beta, mordenite and ZSM-5 types, as well as ion exchanged or acid variants thereof. Cracking conditions include a temperature within the range of from about 250.degree. up to about 450.degree. C., pressures from atmospheric up to about 300 psig and a space velocity within the range of from about 0.5 up to about 4 wt/wt/hour.

    摘要翻译: 本发明提供了一种高选择性催化裂化方法,用于将含有主要含量的C10和更高混合烯烃的原料转化成C9和低级烯烃产物,效率大于20%。 所述产物的特征还在于C6至C9烯烃含量最大,而C2至C4烯烃的含量最小。 该方法包括在裂化条件下将含有至少约50重量%,更优选至少约70重量%的C 10和更高级烯烃的烯烃原料混合物与选自以下的催化剂接触:无定形沉淀二氧化硅,选择的结晶硅酸盐和 铝硅酸盐,即β,丝光沸石和ZSM-5类型,以及离子交换或其酸变体。 开裂条件包括在约250℃至约450℃范围内的温度,从大气压至约300psig的压力和约0.5至约4重量/重量/小时范围内的空间速度。