SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (5): 1030-1036.DOI: 10.1016/j.cjche.2019.01.004

• Fluid Dynamics and Transport Phenomena • 上一篇    下一篇

Numerical simulation and experimental study on dissolving characteristics of layered salt rocks

Qiqi Wanyan1, Yiming Xiao2,3, Na Tang2,3   

  1. 1 China University of Petroleum-Beijing, Beijing 102249, China;
    2 College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China;
    3 Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin 300457, China
  • 收稿日期:2018-03-13 修回日期:2018-10-15 出版日期:2019-05-28 发布日期:2019-06-27
  • 通讯作者: Na Tang

Numerical simulation and experimental study on dissolving characteristics of layered salt rocks

Qiqi Wanyan1, Yiming Xiao2,3, Na Tang2,3   

  1. 1 China University of Petroleum-Beijing, Beijing 102249, China;
    2 College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin 300457, China;
    3 Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin 300457, China
  • Received:2018-03-13 Revised:2018-10-15 Online:2019-05-28 Published:2019-06-27
  • Contact: Na Tang

摘要: Underground salt cavern reservoirs are ideal spaces for energy storage. China is rich in salt rock resources with layered lacustrine sedimentary structures. However, the dissolution mechanism of layered salt rocks remains poorly understood, resulting in significant differences between the actual measurements and the designed indices for the layered salt rock water-soluble cavity-making cycle and the cavity shape. In this work, the dissolution rates of 600 groups of layered salt rocks in China under different conditions were determined experimentally. Thus, the established artificial neural network prediction model was used to assess the effects of the contents of NaCl, Na2SO4, and CaSO4 in the salt rocks, concentrations, dissolution angles, and flow rates on their dissolution rates by performing ANOVA and F-test. The results provide a theoretical basis for evaluating the dissolution rate of layered salt rocks under different conditions and for the numerical simulation of the layered salt rock water-soluble cavity-making process.

关键词: Salt cavern reservoirs, Layered salt rock, Dissolution rate, ANOVA

Abstract: Underground salt cavern reservoirs are ideal spaces for energy storage. China is rich in salt rock resources with layered lacustrine sedimentary structures. However, the dissolution mechanism of layered salt rocks remains poorly understood, resulting in significant differences between the actual measurements and the designed indices for the layered salt rock water-soluble cavity-making cycle and the cavity shape. In this work, the dissolution rates of 600 groups of layered salt rocks in China under different conditions were determined experimentally. Thus, the established artificial neural network prediction model was used to assess the effects of the contents of NaCl, Na2SO4, and CaSO4 in the salt rocks, concentrations, dissolution angles, and flow rates on their dissolution rates by performing ANOVA and F-test. The results provide a theoretical basis for evaluating the dissolution rate of layered salt rocks under different conditions and for the numerical simulation of the layered salt rock water-soluble cavity-making process.

Key words: Salt cavern reservoirs, Layered salt rock, Dissolution rate, ANOVA