摘要
在30℃、40℃和大气压力下测定了水-甲缩醛-对二甲苯和水-甲缩醛-甲苯体系的液液相平衡数据。根据实验数据对分配系数和分离因子进行了估算,结果表明两种萃取剂对甲缩醛均具有优异的萃取能力。采用Othmer-Tobias和Hand方程对实验数据的可靠性进行了分析,两个方程的线性相关度R^2均在0.99以上,表明实验数据具有良好的可靠性。另外,采用UNIQUAC和NRTL热力学模型对数据进行了关联,结果表明估算值与实验值具有良好的一致性。
Liquid-liquid equilibria （LLE） data for the ternary systems {water ＋ methylal ＋ （p-xylene or toluene）} were measured under atmospheric pressure at 30 and 40℃. The distribution coefficient （D） and separation factor （S） were calculated according to the experimental data, which indicated that p-xylene and toluene showed excellent extraction capacity for methylal. Reliability of the experimental data was determined by Othmer-Tobias and Hand correlation equations with the linear correlation of R2〉0.99. Moreover, both UNIQUAC and NRTL models were adopted to correlate the experimental LLE data. The calculated values by the two models showed a good consistency with the measured data.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2018年第1期34-39,46,共7页
Natural Gas Chemical Industry
关键词
液液相平衡
甲缩醛
对二甲苯
甲苯
水
liquid-liquid equilibria
methylal
p-xylene
toluene
water
