CaO/Al2O3复合催化剂催化裂解大豆油制备烃类燃料的研究

摘要

The physical mixing catalyst CaO/Al2O3 was applied in soybean oil by catalytic pyrolysis for hydrocarbon fuel production.The single factor experimental method was used to investigate the effect of cracking temperature,mass space velocity,m(CaO)/m(Al2O3)on cracking products in a fixed bed reactor.The results indicated that the optimum reaction conditions are cracking temperature of 510 ℃,space velocity of 10.00 h 1,and m(CaO)/m(Al2O3)of 2:8.Under the optimal conditions,the liquid yield reaches 71.00％00.The content of hydrocarbon in pyrolysis oil is over 80.96％00 with kinetic viscosity(20 ℃)of 3.1 mm2/s,the acid value of 4.1 mgKOH/g,and the oxygen content of 2.37％00,resulting in calorific value of 44.79 kJ/g.%以物理混合法制备复合催化剂CaO/Al2O3,采用单因素实验法,在固定床反应器以大豆油为原料进行CaO/Al2O3复合催化剂催化裂解大豆油制备烃类燃料的研究,考察裂解温度、空速、m(CaO)/m(Al2O3)对裂解产物的影响.结果表明:在裂解温度为510℃、质量空速为10.00 h-1、m(CaO)/m(Al2O3)为2:8的条件下,裂解液收率为71.00％;裂解油组成中烃类质量分数高达80.96％,裂解油的运动黏度(20℃)为3.1 mm2/s,酸值为4.1 mg KOH/g,氧质量分数为2.37％,热值达44.79 kJ/g.