Solubility of SO2 in Water from 263.15 to 393.15 K and from 10 to 300 bar: Quantitative Raman Spectroscopic Measurements and PC-SAFT Prediction
Solubility of SO2 in Water from 263.15 to 393.15 K and from 10 to 300 bar: Quantitative Raman Spectroscopic Measurements and PC-SAFT Prediction
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SO2 在 263.15 至 393.15 K 和 10 至 300 bar 范围内的水中溶解度：定量拉曼光谱测量和 PC-SAFT 预测
DOI：
10.1021/acs.iecr.9b06242
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发表时间：
2020
影响因子：
4.2
通讯作者：
Wang Zhe
中科院分区：
文献类型：
--
作者：
Zhou Qian;Guo Huirong;Yang Panrui;Wang Zhe
二氧化硫（SO2）是一种酸性气体污染物，它与CO2共存时会加速水岩反应。SO2在水中的溶解度是了解其传输和反应行为的基础。然而，到目前为止，很少有文献报道的SO2在水中的溶解度在宽的温度和压力条件下。在本研究中，定量拉曼光谱技术被用来确定SO2在水中的溶解度在温度从263.15到393.15 K和压力从10到300 bar。基于扰动链统计缔合流体理论，建立了一个预测高温高压下SO2在水中溶解度的状态方程。结果表明：在压力温度（P-T）条件下，当SO2处于气相时，SO2在水中的溶解度随压力的增加而增加，温度对其影响较小;在压力温度条件下，当SO2处于液相时，SO2在水中的溶解度随温度的增加而显著增加。
Sulfur dioxide (SO2), a kind of acid gas pollutant, can accelerate the reaction of water and rock when it is cosequestered with CO2. The solubility of SO2in water is essential to understand the transport and reaction behavior. However, until now, little literature was reported about the solubility of SO2in water within wide temperature and pressure conditions. In this study, quantitative Raman spectroscopic technology was employed to determine the solubility of SO2in water at temperatures from 263.15 to 393.15 K and pressures from 10 to 300 bar. A perturbed chain statistical associating fluid theory-based equation of state was developed to predict the solubility of SO2in water at high pressures and temperatures. The results show that the solubility of SO2in water increases with the increase of pressure at the pressure and temperature (P–T) condition when SO2is in the gas-phase region, but the temperature has less effect on it. At theP–Tcondition when SO2is in the liquid phase, the solubility of SO2increases significantly with the increase of temperature.