气升式反应器二步法生产生物柴油实验研究

以酸化油为原料,利用气升式反应器二步法生产生物柴油.通过实验优化出预酯化反应和酯交换反应的最佳工艺条件和气升式反应装置的最佳工艺参数.气升式反应器的最佳工艺操作参数为:预酯化反应,反应温度115℃,反应时间2 h,催化剂质量分数1%,甲醇通入速度6.5 L/h;酯交换反应,反应温度70℃,反应时间1 h,催化剂质量分数...

Experimental study of biodiesel production by two-step method in airlift loop reactor

With acidification oil as raw material,biodiesel was produced by two-step method in airlift loop reactor.The technological conditions of the pre-esterification reaction and the transesterification reaction were optimized,with the optimal parameters of the self-designed airlift reactor as follows: for pre-esterification reaction,reaction temperature is 115 ℃,reaction time is 2 h,catalyst mass fraction is 1% and methanol flow is 6.5 L/h;for transesterification reaction,reaction temperature is 70 ℃,reaction time is 1 h,catalyst mass fraction is 0.3% and methanol flow is 6.5 L/h.Under the optimal process conditions,the yield of transesterification to biodiesel is 88.2%.The biodiesel quality complies with the GB/T20828-2007.By comparative calculation,the airlift loop reactor can effectively reduce the cost of biodiesel production.