中文摘要：

针对酸性气体中元素硫溶解度的实验测定既困难又危险的问题，运用化工热力学和超临界流体相平衡原理，建立了元素硫在超临界酸性气体中的溶解度半理论、半经验缔合模型。结果表明，该模型能很好地关联实验数据，绝对平均偏差（AAD）的最大值为5．12％、平均值为3．12％；在等温条件下，AAD的最大值为5．43％、平均值为3．01％，明显提高了元素硫的溶解度关联精度，可满足工程需求。

英文摘要：

In order to solve the problem that the solubility measurement of elemental sulfur in sour gases was very difficult and dangerous, based on chemical engineering thermodynamics and phase equilibrium theory of supercritical fluid, a new semi-theoretical and semi-empirical association model for calculating solubility of elemental sulfur in sour gas was established. The comparison with experimental data of literatures showed that the established association model was in good accordance with experimental data, in which the maximal absolute average discrepancy （AAD） was 5.12% （5.43% in isothermal conditions）, and the average absolute average discrepancy was 3.12% （3. 01% in isothermal condition）, so that the accuracy was greatly improved, meeting the engineering needs sufficiently.