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Feasibility analysis on the debrining for compressed air energy storage salt cavern with sediment

Author

Listed:
  • Xie, Dongzhou
  • Jiang, Tingting
  • Ren, Gaofeng
  • Chi, Ziqi
  • Cao, Dongling
  • He, Tao
  • Liao, Youqiang
  • Zhang, Yixuan

Abstract

Using the sediment void to store gas is a promising solution for the construction of compressed air energy storage (CAES) salt cavern with high impurity. However, it remains debatable whether the pressure loss of brine in the sediment can notably affect debrining. In this paper, the in-situ sediments are obtained, and their porosity, moisture content after debrining and permeability are measured. A model of debrining in salt cavern with sediment is built. The model prediction error of injection gas pressure is less than 0.34 %. A criterion for the feasibility evaluation of debrining for CAES salt cavern with sediment is proposed. The results show that the porosity of the in-situ sediment is 47.9 %. When the sediment volume reaches 98 % of the cavern volume, the pressure loss of brine in the sediment and the maximum gas pressure are less than 3.1 MPa and 17 MPa, respectively. The sediment has good permeability, it is feasible to debrine in salt cavern with sediment. It is suggested that the debrining rate and the tubing diameter increase to more than 120 m3/h and 0.14 m, respectively. This study provides valuable guidance for the debrining in salt caverns with sediment.

Suggested Citation

  • Xie, Dongzhou & Jiang, Tingting & Ren, Gaofeng & Chi, Ziqi & Cao, Dongling & He, Tao & Liao, Youqiang & Zhang, Yixuan, 2024. "Feasibility analysis on the debrining for compressed air energy storage salt cavern with sediment," Renewable Energy, Elsevier, vol. 237(PA).
    • Handle: RePEc:eee:renene:v:237:y:2024:i:pa:s0960148124015970
    DOI: 10.1016/j.renene.2024.121529
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