摘要
预测单质硫在酸性气体中的溶解度,现有模型多基于实验建立的半经验公式,不适用于较宽的温度和压力范围,且考虑因素较少。基于传统状态方程,以PR方程为原型,对方程斥力项进行修正;拟合单质硫溶解度实验结果,获得状态方程的热力学参数。将修正后模型的预测结果与32个实验值进行比较,平均相对误差为4.01%。结果表明,该模型可在没有相关实验数据的情况下,用于预测单质硫在酸性气体中的溶解度。
The models used to predict the solubility of elemental sulfur in acid gas are mostly based on semi empirical formulas established by experiments,which are not applicable to a wide range of temperature and pressure,and few factors are considered.Based on the traditional equation of state,the PR equation was used as a prototype,and the repulsion term of the equation was modified.The thermodynamic parameters of the equation of state were obtained by fitting the experimental results of elemental sulfur solubility.Comparing the prediction results of the modified model with 32 experimental values,the average relative error is 4.01%.The results show that the model can be used to predict the solubility of elemental sulfur in acid gas without relevant experimental data.
作者
张明迪
张广东
莫超平
ZHANG Mingdi;ZHANG Guangdong;MO Chaoping(Exploration and Production Research Institute,Southwest Oil and Gas Company,SINOPEC,Chengdu 610041,Sichuan,China;Petroleum Engineering School,Southwest Petroleum University,Chengdu 610500,Sichuan,China)
出处
《低碳化学与化工》
CAS
北大核心
2023年第4期147-153,共7页
Low-Carbon Chemistry and Chemical Engineering
基金
国家自然科学基金(51474181)。
关键词
单质硫
溶解度
气液固
预测模型
elemental sulfur
solubility
gas-liquid-solid
prediction model
