摘要
本文测定了顺酐-DP二元体系在100℃、110℃、120℃、130℃、140℃五组恒温P～X数据,采用Mixon间接法计算了Q函数和气相组成y。并分别用Wilson方程和NRTL方程对五套数据进行了关联和计算。结果表明NRTL方程计算值与实验值符合良好。本文对不同温度下的气液平衡数据统一进行了关联,由此计算得到的活度系数关联式的参数,可在低压到常压的范围内使用。本工作的结果,为顺酐的溶剂吸收新工艺提供了可靠的基础数据。
Isothermal vapor pressure-composition data for linary system maleic anhydride-Dp had been determined by a static equilibrium still at 100℃、 110℃、 120℃、 130℃、 140℃、 The Q function and vapor composition were calculated by Mixon's indirect method. To correlate and calculate the vapor-liquid equilibrium data showed that NRTL equation resulted in good agreement between calculated values and experimental data.A thermodynamically derived polynomial formula correlating the activity coefficients and temperatures was used to fit the experimental resulto. The parameters of the polynomials were obtained by least square method. There parameters can be recommended for the purpose of practical vapor liquid equilibrium calculations over the wide range from low pressure to ordinary pressure.
