Date of Publication:2022-10-07

Journal:Huagong Xuebao/CIESC Journal

Volume:71

Issue:12

Page Number:5430-5442

ISSN No.:0438-1157

Abstract:Leakage of supercritical CO2 long-distance pipelines may cause significant accidents such as pipeline fracture propagation, human injury and medium loss. Therefore, it is of great significance to further study the variation of thermodynamic parameters in the process of pipeline leakage. At present, there is insufficient research on the leakage characteristics of supercritical CO2 pipelines, and it is necessary to conduct a detailed literature review and analysis. This paper introduces the research background and significance of CO2 pipeline leakage characteristics. The experimental, theoretical analysis and numerical simulation of the decompression process, near-field jet expansion and far-field diffusion of CO2 pipeline at home and abroad are reviewed in detail. Finally, this paper summarizes the current research deficiencies of supercritical CO2 pipeline leakage characteristics, and prospects the future research direction. © 2020, Editorial Board of CIESC Journal. All right reserved.

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