氧化钙催化小桐子油裂化制备燃料油试验优化

Experimental Optimization of Preparation of Fuel Oil by Calcium Oxide Catalyzed Cracking of Jatropha curcas Oil

为获取氧化钙催化小桐子油裂化制备燃料油的最优工艺条件,以产率和酸值为试验指标,以反应温度、催化剂粒径和质量空速为试验因素进行3因素3水平正交试验,对试验结果进行综合平衡分析,得到最佳制备条件为:反应温度490℃,催化剂粒径2.5~5mm,质量空速为1.56h-1,在此条件下液态烃类的产率可达64.38%,产物酸值为1.3mgKOH/g。氧化钙作为催化剂得到的液体产物酸值较低,其主要成分为烯烃、烷烃和醇类,具有良好的燃烧性能。

In order to obtain optimal process conditions for preparation of fuel oil by calcium oxide catalyzed by Jatropha curcas oil cracking,the three-factor and three-level orthogonal tests were carried out with reaction temperature,catalyst particle size and mass space velocity as experimental factors based on yield and acid value. The comprehensive equilibrium analysis of the test results showed that the optimal preparation conditions were reaction temperature 490 ℃,catalyst particle size 2. 5 ~ 5 mm,and mass space velocity 1. 56 h-1,under which the yield of liquid hydrocarbons could reach 64. 38% and acid value of the product was 1. 3 mg KOH/g. The acid value of the liquid product obtained by using calcium oxide as a catalyst was low,and its main components were olefins,alkanes and alcohols,which had good combustion performance.