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Applied Sciences
Volume 15
Issue 10
10.3390/app15105323
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Design and Performance Analysis of a Composite Separator with Enhanced De-Bonding Efficiency of Gas Hydrate-Bearing Sediments

by
Xing Fang
1,
Yufa He
1,*,
Zhong Li
1,
Guorong Wang
2 and
Shunzuo Qiu
3
1
State Key Laboratory of Offshore Natural Gas Hydrate, CNOOC Research Institute Co., Ltd, Beijing 100192, China
2
Department of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
3
Department of International Applied Technology, Yinbin University, Yibin 644001, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2025, 15(10), 5323; https://doi.org/10.3390/app15105323 (registering DOI)
Submission received: 10 March 2025 / Revised: 5 May 2025 / Accepted: 8 May 2025 / Published: 9 May 2025
(This article belongs to the Section Fluid Science and Technology)
Versions Notes

Featured Application

The conclusions of this study can be applied to the marine natural gas hydrate solid-fluidization mining process, specifically to the sand removal process of the in situ separator, in order to enhance downhole de-sanding efficiency, improve natural gas hydrate extraction efficiency, and reduce extraction costs.

Abstract

In the marine natural gas hydrate solid-fluidization mining process, current separation devices are insufficient in de-bonding the hydrate cementation between sand particles, affecting the hydrate collection efficiency. To address this issue, a composite separator was designed in this study that is used to restrict the axial movement of cemented particles, thereby achieving the goal of enhanced de-bonding efficiency. A combined computational fluid dynamics–discrete element method simulation method was used to verify the de-bonding performance of this composite separator on weakly cemented hydrate particles with different sizes and to study the influence of the spiral flow channel structural parameters and inlet types on the de-bonding performance.
Keywords: natural gas hydrate; structural optimization; CFD–DEM coupled analysis; gas hydrate bearing sediments; de-sand natural gas hydrate; structural optimization; CFD–DEM coupled analysis; gas hydrate bearing sediments; de-sand

Share and Cite

MDPI and ACS Style

Fang, X.; He, Y.; Li, Z.; Wang, G.; Qiu, S. Design and Performance Analysis of a Composite Separator with Enhanced De-Bonding Efficiency of Gas Hydrate-Bearing Sediments. Appl. Sci. 2025, 15, 5323. https://doi.org/10.3390/app15105323

AMA Style

Fang X, He Y, Li Z, Wang G, Qiu S. Design and Performance Analysis of a Composite Separator with Enhanced De-Bonding Efficiency of Gas Hydrate-Bearing Sediments. Applied Sciences. 2025; 15(10):5323. https://doi.org/10.3390/app15105323

Chicago/Turabian Style

Fang, Xing, Yufa He, Zhong Li, Guorong Wang, and Shunzuo Qiu. 2025. "Design and Performance Analysis of a Composite Separator with Enhanced De-Bonding Efficiency of Gas Hydrate-Bearing Sediments" Applied Sciences 15, no. 10: 5323. https://doi.org/10.3390/app15105323

APA Style

Fang, X., He, Y., Li, Z., Wang, G., & Qiu, S. (2025). Design and Performance Analysis of a Composite Separator with Enhanced De-Bonding Efficiency of Gas Hydrate-Bearing Sediments. Applied Sciences, 15(10), 5323. https://doi.org/10.3390/app15105323

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