含水乙醇柴油稳定性影响因素的研究

为解决乙醇乳化柴油极易分层的问题,本文以磁力搅拌器、机械搅拌仪为乳化设备,用0#柴油与含水乙醇为原料制备含水乙醇柴油微乳液,通过实验研究了乳化剂HLB值(亲水、亲油平衡值)、乳化剂含量、含水量、乙醇(95%-体积比)含量对含水乙醇柴油微乳液稳定性的影响。试验结果表明混合燃料的稳定性随含水量与乙醇(95%)量的增加而降低;随乳化剂含量的变化稳定性各有不同,且在乳化剂含量为1%左右时稳定性较好;通过增加乳化剂HLB值可在保证微乳液稳定性的前提下提高含水量和乙醇含量;乙醇含量为9%,乳化剂HLB值为3.5,乳化剂含量为1%时,混合燃料的稳定性最好。本文的研究结果对乙醇乳化柴油的配制具有重要的指导意义。

The Study on Effect Factors of the Aqueous Ethanol Diesel Stability

To solve the unstability question of the aqueous ethanol diesel, authors prepared them by mixing some kinds of alcohol and 0# diesel. Magnetic stirrer and mechanical stirring apparatus were used as emulsify equipment in this paper. Factors influence the stability of the aqueous ethanol diesel, such as hydrophilic-lipophilic balance （HLB） value, the ability of water loving or diesel loving, the content of emulsifier, water and alcohol（95%） were investigated through experiments. The result shows the stability of aqueous ethanol diesel goes down with the content of alcohol（95%）increases. The stability differs with different content of emulsifier further. The aqueous ethanol diesel gets the better stability when the content of emulsifier is about 1%. When the content of water or alcohol（95%） goes up the aqueous ethanol diesel keeps stable by increasing the HLB value of emulsifier yet. The aqueous ethanol diesel gets the best stability when the content of alcohol（95%）is 9%, emulsifier is 1% and the HLB value of emulsifier is 3.5.This study has a guiding significance for making up a aqueous ethanol diesel.