CAJ | 학술논문

为了解决煤制乙二醇中1,2-丁二醇与乙二醇的分离问题，采用气相单循环法测定了绝压6.67kPa下1,2-丁二醇-乙二醇二元体系的气液平衡数据，结果发现此物系存在共沸物，共沸温度为395.67K，共沸组成为含1,2-丁二醇0.457（摩尔分率）。并用Herrington面积检验法对实验数据进行热力学一致性检验，结果表明实验数据符合热力学一致性。分别用Wilson、NRTL和UNIQUAC模型对气液平衡数据进行关联，得到了各个模型的二元交互作用参数，并对气液平衡数据的模型计算值与实验值进行比较，发现二者偏差较小，可满足工程上分离设计的需要。
위료해결매제을이순중1,2-정이순여을이순적분리문제，채용기상단순배법측정료절압6.67kPa하1,2-정이순-을이순이원체계적기액평형수거，결과발현차물계존재공비물，공비온도위395.67K，공비조성위함1,2-정이순0.457（마이분솔）。병용Herrington면적검험법대실험수거진행열역학일치성검험，결과표명실험수거부합열역학일치성。분별용Wilson、NRTL화UNIQUAC모형대기액평형수거진행관련，득도료각개모형적이원교호작용삼수，병대기액평형수거적모형계산치여실험치진행비교，발현이자편차교소，가만족공정상분리설계적수요。
In order to separate 1,2-butanediol and ethylene glycol, the method of only vapor phase circulation was used to measure the vapor-liquid equilibrium (VLE) values of the binary system 1,2-butanediol+ethylene glycol at 6.67kPa. Azeotropic behavior was found for this system:the azeotropic temperature is 395.67K and the azeotropic composition is 0.457 mole fraction 1,2-butanediol. The measured VLE data of the binary system could pass the thermodynamic consistency test according to Herington area method, and were correlated by Wilson, NRTL and UNIQUAC activity coefficient models. And all the models showed rather small deviation from the experimental results, indicating that the experimental data could be suitable for use in the industrial process design.