Study on dissolution kinetics of rock salt in the construction of underground energy storage salt cavern

被引：0

作者：

Wang, Tongtao ^{[1
]}

Xie, Dongzhou ^{[2
]}

Liao, Youqiang ^{[1
]}

Xie, Kai ^{[3
]}

He, Tao ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China

[2] Wuhan Univ Technol, Sch Resources & Environm Engn, Hubei Key Lab Mineral Resources Proc & Environm, Wuhan 430070, Peoples R China

[3] PipeChina Engn Technol Innovat Co Ltd, Tianjin 300457, Peoples R China

来源：

CHEMICAL ENGINEERING SCIENCE | 2025年 / 309卷

基金：

中国博士后科学基金;

关键词：

Rock salt; Dissolution; Salt cavern; Underground energy storage; Diffusion; GAS-STORAGE; SHAPE;

D O I：

10.1016/j.ces.2025.121508

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Water solution mining is one of the ways to construct a salt cavern in rock salt formation. However, current research on the dissolution mechanism of rock salt is unclear. In this paper, the dissolution mechanism of rock salt is revealed and a kinetic model is established by a series of dissolution tests. Results show that ion diffusion is the control step of rock salt dissolution under static conditions, the surface reaction rate constant is 5 similar to 6.4 times that of the ion diffusion rate constant. The temperature increases from 20 to 50 degrees C under static conditions, the dissolving rate of rock salt increases by 20 %. The convection of solution significantly promoted the dissolution of rock salt. When the stirring speed of rock salt increases from 0 to 600 rpm, the dissolving rate of rock salt can increase by 218 %. The average relative error of the predicted dissolving rate of rock salt is 13.14 %.

引用

页数：11

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