2008•Journal of Liaoning University of Petroleum & Chemical TechnologyRequires access

Aromatization for FCC Naphtha Fraction on Modified HZSM-5 Catalysts

Feng Zhi-gang

Abstract

HZSM-5 was modified by different method,and the aromatization performances of different modified HZSM-5 catalysts were investigated with a continuous fixed reactor using FCC gasoline(75～120 ℃fraction).The experimental results show that order in stability of catalysts is HZSM-5Zn/HZSM-5Zn/HZSM-5(hydrothermal)ZnSn/HZSM-5ZnP/HZSM-5ZnSn/HZSM-5(hydrothermal)ZnP/HZSM-5(hydrothermal).The hydrothermal treated ZnP/HZSM-5 catalyst has better decreasing olefins and aromatization activity and stability.Under reaction temperature 430 ℃,pressure 0.1 MPa,liquid hour space velocity 1 h-1,the olefins conversion rate in feedstock is 83.55%,olefins content and aromatics content in the liquid product are 7.28% and 81.96%,respectively.Especially the content of toluene in the liquid product is up to 29.36%.

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Key concepts: Naphtha, Aromatization, Catalysis, Hydrothermal circulation, Space velocity, Toluene, Fraction (chemistry), Materials science