Emulsions of crude glycerin from biodiesel processing with fuel oil for industrial heating.
Emulsions of crude glycerin from biodiesel processing with fuel oil for industrial heating.
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DOI：
10.1021/jf304883t
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发表时间：
2013-02
影响因子：
6.1
通讯作者：
Hannah E Mize;Anthony J. Lucio;Cassie J. Fhaner;F. Pratama;L. Robbins;D. S. Karpovich
中科院分区：
文献类型：
--
作者：
Hannah E Mize;Anthony J. Lucio;Cassie J. Fhaner;F. Pratama;L. Robbins;D. S. Karpovich
将生物柴油生产中的粗甘油用作取暖燃料有相当大的兴趣。在这项工作中，粗甘油被乳化成燃料油，以解决点火和持续燃烧的困难。以几种牌号的甘油和两种牌号的燃料油为原料，采用直接乳化法和相转化乳化法制备乳化液。我们的发现揭示了将甘油乳化成油所需的独特表面活性剂；这些要求取决于几种污染物的水平，包括水、灰分和Mong(物质有机非甘油)中的成分。与燃料油中的水相比，燃料油中的粗甘油的稳定乳状液需要更高的亲水-亲脂平衡。生物柴油催化剂中的高浓度盐类通常会阻碍乳状液的稳定性。胶束的几何紧密堆积经过精心平衡，以机械方式稳定乳状液，同时为泵送和燃油喷射提供低粘度。相转化乳化法比直接乳化法得到的乳状液更稳定。乳化液作为废油燃烧器的燃料进行了成功的试验。
There is considerable interest in using crude glycerin from biodiesel production as a heating fuel. In this work crude glycerin was emulsified into fuel oil to address difficulties with ignition and sustained combustion. Emulsions were prepared with several grades of glycerin and two grades of fuel oil using direct and phase inversion emulsification. Our findings reveal unique surfactant requirements for emulsifying glycerin into oil; these depend on the levels of several contaminants, including water, ash, and components in MONG (matter organic non-glycerin). A higher hydrophile-lipophile balance was required for a stable emulsion of crude glycerin in fuel oil compared to water in fuel oil. The high concentration of salts from biodiesel catalysts generally hindered emulsion stability. Geometric close-packing of micelles was carefully balanced to mechanically stabilize emulsions while also enabling low viscosity for pumping and fuel injection. Phase inversion emulsification produced more stable emulsions than direct emulsification. Emulsions were tested successfully as fuel for a waste oil burner.