CAJ | 학술논문

采用平衡釜法测定了三元体系（环己烷＋正庚烷＋N，N-二甲基甲酰胺）在常压不同温度（30，40，50℃）下的液液相平衡数据。实验数据用Bachaman及Othmer-Tobias进行可靠性关联，关联结果表明数据的可靠性较好，根据实验结果绘制了三元相图。对不同温度下的液液平衡实验数据，分别用NRTL和UNIQUAC活度系数方程进行了关联，求得方程的二元交互作用系数，关联结果表明NRTL和UNIQUAC方程对该体系适用较好。由实验数据计算得到衡量N，N-二甲基甲酰胺抽提性能的参数（分配系数、分离因子、选择性系数）。
채용평형부법측정료삼원체계（배기완＋정경완＋N，N-이갑기갑선알）재상압불동온도（30，40，50℃）하적액액상평형수거。실험수거용Bachaman급Othmer-Tobias진행가고성관련，관련결과표명수거적가고성교호，근거실험결과회제료삼원상도。대불동온도하적액액평형실험수거，분별용NRTL화UNIQUAC활도계수방정진행료관련，구득방정적이원교호작용계수，관련결과표명NRTL화UNIQUAC방정대해체계괄용교호。유실험수거계산득도형량N，N-이갑기갑선알추제성능적삼수（분배계수、분리인자、선택성계수）。
Liquid-liquid equilibrium (LLE) data were measured for ternary system (n-heptane-cyclohexane-N,N-dimethylformamide) at atmospheric pressure and different temperatures (30, 40, 50 ℃).The experimental data were correlated using the Bachman and the Othmer-Tobias correlation , and the results showed a good correlation . Complete phase diagrams were obtained by tie-line data and determining solubility .The universal quasichemical activity coefficient ( UNIQUAC) and the non-random two-liquid equation ( NRTL) were used to predict the phase equilibrium in the system by the interaction parameters from the experimental data .It shows that UNIQUAC and NRTL used for LLE can provide a good correlation .The separation factors , distribution coefficients and selectivity were obtained according to the experimental data .