摘要
生产乙酸乙酯的产物乙醛、乙醚采用精馏容易脱除,乙酸乙酯、乙醇、水形成二元、三元共沸物,则难以分离,共沸法和萃取精制乙酸乙酯,工艺较复杂,能耗大;复合萃取一次可得99%以上乙酸乙酯,同时可得95%以上乙醇,用水量仅为原料量的2倍,工艺简单,能耗低。本文测定乙酸乙酯、乙醇、水在甘油中的γ^∝及二元体系的VLE数据,由三对二元体系模型参数计算乙酸乙酯-水-甘油及乙酸乙酯一乙醇一甘油的VLE数据,为萃取模拟计算及试验提供基础数据。
Activity coefficients(r~∞)of ethyl acetate-ethanol-water were measured at glycerol by gas-chromatography.Model references were correlated with Wilson equation by single method.VLE data of ethyl acetate-ethanol and tehyl acetate-water were measured.VLE data of ethyl acetate-ethanol-glycerol and ethyl acetate-water-glycerol were calculated by model references of two systems.Results of measurement and calculation was provided for extraction simulation calculation of ethyl acetate-ethanol-water and ethyl acetate-ethanol.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2004年第5期653-654,共2页
Chemical Research and Application