摘要
A method to select solvent for extractive distillation is proposed by UNIFAC group contribution. Solventselectivity can be divided into two parts: the partial combinatorial solvent selectivity and the partial residual solventselectivity. The properties of partial combinatorial and residual solvent selectivity are demonstrated. In most cases,the partial residual solvent selectivity is predominant. The candidate groups of solvent can be selected by groupinteraction parameter using UNIFAC group interaction parameter table as a guide.
A method to select solvent for extractive distillation is proposed by UNIFACgroup contribution. Solvent selectivity can be divided into two parts: the partial combinatorialsolvent selectivity and the partial residual solvent selectivity. The properties of partialcombinatorial and residual solvent selectivity are demonstrated. In most cases, the partial residualsolvent selectivity is predominant. The candidate groups of solvent can be selected by groupinteraction parameter using UNIFAC group interaction parameter table as a guide.
关键词
官能团
萃取精馏
溶剂选择
UNIFAC
群体交互参数
solvent selection
solvent selectivity
UNIFAC
group contribution
extractive distillation