Study on prediction of elemental sulfur solubility by gas-liquid-solid three-phase model

ZHANG Mingdi; ZHANG Guangdong; MO Chaoping

doi:10.12434/j.issn.2097-2547.20220267

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Study on prediction of elemental sulfur solubility by gas-liquid-solid three-phase model

- Study on prediction of elemental sulfur solubility by gas-liquid-solid three-phase model
- 作者机构：
  
  1. 中国石化西南油气分公司勘探开发研究院,四川,成都,610041
  2. 西南石油大学石油与天然气工程学院,四川,成都,610500
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20220267
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ZHANG Mingdi, ZHANG Guangdong, MO Chaoping. Study on prediction of elemental sulfur solubility by gas-liquid-solid three-phase model. [J]. Low-Carbon Chemistry and Chemical Engineering
DOI：

ZHANG Mingdi, ZHANG Guangdong, MO Chaoping. Study on prediction of elemental sulfur solubility by gas-liquid-solid three-phase model. [J]. Low-Carbon Chemistry and Chemical Engineering DOI： 10.12434/j.issn.2097-2547.20220267.

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。

Abstract

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.

关键词

单质硫溶解度气液固预测模型

Keywords

elemental sulfursolubilitygas-liquid-solidprediction model

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Department of Chemical Engineering, Tsinghua University

天津大学化工系

Department of Chemical Engineering,TianjinUniversity

Institute of Coal Chemistry State Key Laboratory of Coal Conversion, Shanxi Institute of Coal Chemistry,Chinese Academy of Sciences Taiyuan

School of Chemical Engineering,South China University of Technology

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