QUASI-CHEMICAL LOCAL COMPOSITION MODEL AND ITS EXAMINATION USING ADHESIVE HARD SPHERE MIXTURES  

作　　者：吴雄武 时钧 

出　　处：《Chinese Journal of Chemical Engineering》1994年第3期19-32,共14页中国化学工程学报（英文版）

摘　　要：A local composition expression has been derived from the Guggenheim′s quasi-chemicalequation.On this basic a thermodynamic model,the quasi-chemical local composition model(QCLC)was established.To examine its capability for correlation and prediction,Baxter′s adhesivehard sphere mixtures were used,and an improved numerical method was proposed to estimate theirthermodynamic properties.By means of this method the excess properties of the mixtures composedof four kinds of adhesive hard spheres were calculated,The activity coefficients from QCLC modelwere compared with those from the Wilson,NRTL and UNIQUAC equations.Results show thatamong these models,the QCLC model is the best one for correlation and prediction.A local composition expression has been derived from the Guggenheim's quasi-chemical equation. On this basic a thermodynamic model, the quasi-chemical local composition model (QCLC) was established. To examine its capability for correlation and prediction, Baxter's adhesive hard sphere mixtures were used, and an improved numerical method was proposed to estimate their thermodynamic properties. By means of this method the excess properties of the mixtures composed of four kinds of adhesive hard spheres were calculated. The activity coefficients from QCLC model were compared with those from the Wilson, NRTL and UNIQUAC equations. Results show that among these models, the QCLC model is the best one for correlation and prediction.

关 键 词：local composition themodynamic model ADHESIVE HARD SPHERE MIXTURE activity coefficient 

分 类 号：TQ430[化学工程]