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Maximization of energy recovery inside supersonic separator in the presence of condensation and normal shock wave

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  • Shooshtari, S.H. Rajaee
  • Shahsavand, A.

Abstract

Natural gases provide around a quarter of energy consumptions around the globe. Supersonic separators (3S) play multifaceted role in natural gas industry processing, especially for water and hydrocarbon dew point corrections. These states of the art devices have minimum energy requirement and favorable process economy compared to conventional facilities. Their relatively large pressure drops may limit their application in some situations. To maximize the energy recovery of the dew point correction facility, the pressure loss across the 3S unit should be minimized. The optimal structure of 3s unit (including shock wave location and diffuser angle) is selected using simultaneous combination of normal shock occurrence and condensation in the presence of nucleation and growth processes. The condense-free gas enters the non-isentropic normal shock wave. The simulation results indicate that the normal shock location, pressure recovery coefficient and onset position strongly vary up to a certain diffuser angle (β = 8°) with the maximum pressure recovery of 0.88 which leads to minimum potential energy loss. Computational fluid dynamic simulations show that separation of boundary layer does not happen for the computed optimal value of β and it is essentially constant when the inlet gas temperatures and pressures vary over a relatively broad range.

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  • Shooshtari, S.H. Rajaee & Shahsavand, A., 2017. "Maximization of energy recovery inside supersonic separator in the presence of condensation and normal shock wave," Energy, Elsevier, vol. 120(C), pages 153-163.
    • Handle: RePEc:eee:energy:v:120:y:2017:i:c:p:153-163
    DOI: 10.1016/j.energy.2016.12.060
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    References listed on IDEAS

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    1. Yang, Yan & Wen, Chuang & Wang, Shuli & Feng, Yuqing, 2014. "Theoretical and numerical analysis on pressure recovery of supersonic separators for natural gas dehydration," Applied Energy, Elsevier, vol. 132(C), pages 248-253.
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    Cited by:

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    2. Liu, Yang & Cao, Xuewen & Chong, Daotong & Yang, Wen & Zhao, Ziyuan & Bian, Jiang, 2023. "Effects of energy conversion under shock wave on the effective liquefaction efficiency in the nozzle during natural gas dehydration," Energy, Elsevier, vol. 283(C).
    3. Bian, Jiang & Cao, Xuewen & Yang, Wen & Song, Xiaodan & Xiang, Chengcheng & Gao, Song, 2019. "Condensation characteristics of natural gas in the supersonic liquefaction process," Energy, Elsevier, vol. 168(C), pages 99-110.
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    5. Bian, Jiang & Cao, Xuewen & Teng, Lin & Sun, Yuan & Gao, Song, 2019. "Effects of inlet parameters on the supersonic condensation and swirling characteristics of binary natural gas mixture," Energy, Elsevier, vol. 188(C).
    6. Liu, Yang & Cao, Xuewen & Guo, Dan & Cao, Hengguang & Bian, Jiang, 2023. "Influence of shock wave/boundary layer interaction on condensation flow and energy recovery in supersonic nozzle," Energy, Elsevier, vol. 263(PA).
    7. Ding, Hongbing & Zhang, Yu & Sun, Chunqian & Yang, Yan & Wen, Chuang, 2022. "Numerical simulation of supersonic condensation flows using Eulerian-Lagrangian and Eulerian wall film models," Energy, Elsevier, vol. 258(C).

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