基于双子乳化剂的微乳化柴油配比优化

Optimization of Formula on Micro-emulsified Diesel Based on Gemini Emulsifier

为了研究双子乳化剂对微乳化柴油稳定性的影响,以Minitab软件设计单因素试验、Plackett-Burman试验、爬坡试验、Box-Behnken试验,通过Box-Behnken试验数据,建立响应面模型,通过Minitab软件中的寻优模块,对试验结果寻优,得到最优的试验配方(体积分数):复配乳化剂比例2.13%,蓖麻油比例1.02%,柴油比例80.85%,HLB值6.56,葡萄糖水溶液16%,溶液中葡萄糖质量分数18.68%。试验结果表明:利用双子乳化剂制备的微乳化柴油稳定时间为292.6h,通过试验验证得到的稳定时间为286h,与理论误差为4.7%,较传统乳化剂稳定时间提高大约10%,复配乳化剂的比例减少12%,助溶剂比例减少5%,溶液中的葡萄糖比例提高9%,且制备的微乳化柴油颜色澄清透明。

In order to study the effects of gemini emulsifier on the stability of emulsified diesel, the single factor test, Placket Burman test, Slope-climbing test and Box Behnken test were designed with Minitah software. The response surface model was built based on Box-Behnken test data and the optimal test formula was acquired with the best value searching module of Minitab software. The ingredients of 2.13 % compound emulsifier, 1.02 % castor oil, 80.85 % diesel and 16 % glucose aqueous solution （18.68% mass fraction of glucose） and the HLB value of 6.56 formed the optimal formula of emulsified solution. The results showed that the only 4.7% difference between 292.6 h theoretical stability time and 286 h testing stability time proved the sta- bility of prepared micro-emulsified diesel. Compared with the traditional emulsifier, the stability time improved by 10%, the proportion of compound emulsifier and cosolvent reduced by 12% and 5% respectively, the amount of dissolved glucose in- creased by 9 %, and the prepared emulsified diesel was more transparent.