Catalytic conversion method for deeply reducing gasoline olefin

The invention discloses a catalytic conversion method for deeply reducing gasoline olefin, and mainly solves the problems of low heavy oil conversion degree, excessive gasoline cracking, small gasoline olefin reduction amplitude and the like in the existing technology for reducing gasoline olefin th...

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Bibliographische Detailangaben
Hauptverfasser: WANG ZHIFENG, LIU CHAOWEI, GAO XIONGHOU, HOU KAIJUN, ZHANG ZHONGDONG, KO YOUNG-BOK, MENG FANFANG, YOO SO-YOUNG, REN SHIHONG, LIU TAO
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a catalytic conversion method for deeply reducing gasoline olefin, and mainly solves the problems of low heavy oil conversion degree, excessive gasoline cracking, small gasoline olefin reduction amplitude and the like in the existing technology for reducing gasoline olefin through catalytic cracking. The method comprises the following steps: inputting a high-temperature catalyst into a riser reactor, sequentially contacting with olefin-rich pre-hydrogenation catalytic light gasoline, aromatic raffinate oil and a preheated catalytic raw material, vaporizing, reacting, separating, pre-hydrotreating, cutting, and uniformly mixing hydrogenation catalytic heavy gasoline with the pre-hydrogenation catalytic light gasoline to obtain a catalytic semi-finished product gasoline. The catalytic conversion method provided by the invention has the characteristics that the yield of gasoline and propylene is increased, the heavy oil conversion degree is high, the olefin content of a catalytic semi-fin