Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
Bioresour Technol. 2013 May;136:730-4. doi: 10.1016/j.biortech.2013.03.081. Epub 2013 Mar 20.
A conventional trickle bed reactor and its modified type both packed with Ca/Al composite oxide-based alkaline catalysts were studied for biodiesel production by transesterification of rapeseed oil and methanol. The effects of the methanol usage and oil flow rate on the FAME yield were investigated under the normal pressure and methanol boiling state. The oil flow rate had a significant effect on the FAME yield for the both reactors. The modified trickle bed reactor kept over 94.5% FAME yield under 0.6 mL/min oil flow rate and 91 mL catalyst bed volume, showing a much higher conversion and operational stability than the conventional type. With the modified trickle bed reactor, both transesterification and methanol separation could be performed simultaneously, and glycerin and methyl esters were separated additionally by gravity separation.
采用传统滴流床反应器及其改进型，均填充 Ca/Al 复合氧化物碱性催化剂，通过菜籽油与甲醇的酯交换反应生产生物柴油。在常压和甲醇沸腾状态下，考察了甲醇用量和油流量对 FAME 产率的影响。两种反应器的油流量对 FAME 产率均有显著影响。在 0.6mL/min 的油流量和 91mL 催化剂床体积下，改进型滴流床反应器的 FAME 产率保持在 94.5%以上，转化率和操作稳定性均明显高于传统型。采用改进型滴流床反应器，可同时进行酯交换反应和甲醇分离，甘油和甲酯通过重力分离进一步分离。
