关小旭,李朋,张砚,乔玖春,李岩,刘炳森

• 1:成都理工大学能源学院
• 2:中国石油大学(华东)石油工程学院
• 3:中国石油西南油气田分公司川西北气矿
• 4:中国石油长庆油田第四采油厂

摘要(Abstract)：

为了应用Chrastil缔合模型准确地计算元素硫在酸性气体中的溶解度,以现有文献中元素硫在酸性气体中的溶解度实验数据为依据,对前人采用的2种Chrastil模型系数拟合方法的Chrastil模型预测硫溶解度的效果进行了分析。结果表明:采用第一种拟合方法得到的Chrastil模型系数不能用来进行元素硫溶解度预测;而采用方法二得出的模型系数,可以预测溶解度随气体密度的变化趋势,但其预测误差偏大。为此,针对第二种拟合方法提出了一种计算Chrastil模型系数的改进拟合方法(二重变量循环法)。实例应用结果表明:在所研究的温度压力范围内,改进后的拟合方法使Chrastil缔合模型在预测精度上有较大幅度的提高,拟合的相对误差小于5%。

关键词(KeyWords)： 元素硫的溶解性;酸性气体;Chrastil缔合模型

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 关小旭,李朋,张砚,乔玖春,李岩,刘炳森

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