Abstract
A possible low energy alternative to solvent extraction processes for kerosene dearomatisation to meet product specifications of low aromatic content in jet fuels/superior kerosene, is the liquid surfactant membrane (LSM) process as demonstrated in several recent papers. However, for design of separation equipment by this process, predictive mass transfer models are required. The present study shows that the analytical solution to the transient diffusion equation as developed by Vorstmann and Thijssen for liquid-liquid extraction can be used to predict the extraction rate of kerosene aromatics through LSM. The parameters required in the model calculations can be measured experimentally or can be estimated independently. The calculations are based on the assumption that the kerosene aromatics can be represented by a model hydrocarbon, 1-methylnaphthalene. The model should prove a useful tool in design/simulation calculations for a kerosene LSM refining process.
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