Thermodynamic calculation of cloud point temperatures and wax phase compositions of refined hydrocarbon mixtures

摘要: Abstract Hydrocarbon vapor-liquid equilibria have been extensively investigated by theoretical as well experimental view points. Much less attention has paid to the multi-component solid-liquid equilibria, where solid phase consists of wax constituents. Molecules containing long-chain alkyl (or methylene) groups form a at temperatures or below cloud point, even if fusion constituents are point. Most work on formation and few published calculation methods very empirical applicable only specific cases. The purpose this paper is present new thermodynamic correlations for prediction point compositions precipitated waxes over wide temperature range from about 210 320K. considered homogeneous amorphous mixture, which does not undergo second higher order transitions. accurate measurements especially difficult tasks low such data show appreciable scatter. Even with uncertainties in measurement model correlation presented appears be within ±3K average most refined hydrocarbon fuels.