反应温度对LB-5裂解重油制低碳烯烃影响规律的研究

Research on rule of effect of reaction temperature on LB-5 catalytic cracking heavy oil for olefin production

文中选择抗磨损性能和抗重金属性能较好的LB-5作为催化剂,在固定流化床催化裂化实验装置上,系统地考察了反应温度对重油裂解制低碳烯烃时的产物分布、及汽油族组成和辛烷值的影响。结果表明:产物中汽油的辛烷值随反应温度的升高有不同程度的增加。反应温度不同,热裂化反应、氢转移反应以及异构化反应的程度表现出不同的特点。

LB-5 of good abrasion resistance and heavy metal resistance was selected as catalyst for systematic investigation in the pilot fixed fluidized bed catalytic cracker of the effect of reaction temperature on product distribution, gasoline family composition and octane number when heavy oil is cracked for light olefin production.The result shows that, the octane number of gasoline in the product increased in varying degrees with the increasing of reaction temperature.Different reaction temperature resulted in different degrees of thermal cracking, hydrogen transfer reaction and isomerization.