Olefin Reduction of FCC Naphtha Using β-zeolite Catalyst in the Absence of Hydrogen
Abstract
In order to fulfill the requirement of environmental protection, experimentation of reducing FCC gasoline olefin content and optimization of the process operating conditions were studied in a small fixed vector. Under the action of a macroporous molecular sieve catalyst, which consists of active composition of Ni and Mo metal in β-zeolite supporter, when the reaction temperature was 140°C, reaction pressure was 2.0 MPa, and space velocity was 1.0 h-1-2.0 h-1, aromatization reactions, isomerization reactions, and hydrogen transfer reactions happened, so that the olefin, benzene, and arene in product gasoline were no more than 35%, 2.5%, and 40%, respectively. The octane number of petroleum is slightly increased. And it overcomes the disadvantage of losing octane by hydrogenation process. The catalyst could be regenerated using a multi-cycle with an average running cycle of about 96 hr. The results show that the process reaction condition is relaxation, process is non-hydrogenation, process flow is simple, technical and economic target is advanced, benefit is high, and cost is low.
Keywords: catalytic cracking; gasoline; olefin; process conditions
Authors: L. Lihua a; Z. Jinshen a
Affiliation: a School of Petroleum and Chemical Technology, Liaoning University of Petroleum and Chemical Technology, Liaoning, Fushun, China
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