棉籽油催化裂化制取轻质燃料油的研究

Light fuel oil production from cottonseed oil by catalytic cracking

以棉籽油为原料,采用催化裂化工艺制取轻质燃料油,考察了反应温度、剂油比、反应时间对棉籽油催化裂化制取轻质燃料油的影响。以燃料油产率最大值为目标函数,利用响应面法优化操作变量,并建立了棉籽油催化裂化制取燃料油的数学模型,其计算结果与试验数据吻合良好;试验结果表明适宜的反应条件为:反应温度426℃,反应时间50 s,剂油比7.8∶1(m/m);在此条件下有机馏分(≤360℃)产率65.6%,汽油馏分(≤205℃)产率33.7%,气体产率11.6%;制备的燃料油馏分可以作为石化汽油、柴油的调和组分。

Light fuel oil was produced from cottonseed oil by catalytic cracking technology. The effects of reaction temperature, ratio of catalyst to oil and time on products yield were studied. The response surface methodology was used to optimize the operating variables for maximum yield of fuel oil in the liquid product obtained. The mathematical model of light fuel oil production was then constructed. The results showed that the predicted results of the mathematical model was in agreement with the experimental data. The optimum conditions were as flollows ： reaction temperature 426 ℃, reaction time 50 s, and mass ratio of catalyst to oil 7.8： 1. Under the optimum conditions, the yields of organic fraction （ ≤ 360 ℃ ）, gasoline （ ≤ 205 ℃ ） ,and gas were 65.6% ,33.7% and 11.6%, respectively. Light fuel oils prepared by catalytic cracking can be used as gasoline and diesel additive.