张永春

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:大连工学院

学位:学士

所在单位:化工学院

学科:工业催化. 化学工艺

办公地点:大连理工大学西校区化工实验楼B221

联系方式:凌工路2号大连理工大学西校区化工实验楼B221,116023 tel:041184986322,email:zalidy5518@vip.sina.com

电子邮箱:zhangyc@dlut.edu.cn

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当前位置: 张永春教授 >> 科学研究 >> 论文成果

Large-scale release and dispersion of CO2: Experiments and simulation

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论文类型:会议论文

发表时间:2015-11-08

收录刊物:EI、Scopus

页面范围:246-253

摘要:Carbon capture and sequestration (CCS) has emerged as a viable technique to mitigate climate change, reduce greenhouse gases and ocean acidification, and to enhance oil or gas recovery. An important part of the CCS chain is pipeline transport of dense-phase carbon dioxide (CO2) from large point sources to suitable storage sites. Since CO2 is an asphyxiating gas, deliberate or accidental leaks from pipelines represent a serious hazard, and realistic consequence modelling of such scenarios is of paramount importance for safety. This paper presents results from numerical simulations of an industrial-scale pipeline release and the subsequent dispersion of CO2 in the atmosphere. The experiment and flow model development was part of the CO2PipeHaz project in the European Commission's Seventh Framework Programme for Research and Technological Development (FP7). The length and internal diameter of the pipeline used in the experimental setup was 260 m and 0.233 m, respectively. Pure CO2 was discharged through a 0.05 m diameter orifice located 0.5 m above ground at the end section of the pipeline. The initial temperature was 20   C and the initial pressure 53 bar. The measurements included wind speed, wind direction and temperature of the CO2 plume. Comparison between experimental results and numerical simulations with the computational fluid dynamics (CFD) software FLACS shows good agreement. The numerical study provides useful insight into the dispersion behaviour of the CO2 plume, and highlights the sensitivity towards the use of various turbulence models, surface roughness and wind conditions. The paper represents a significant contribution to the understanding of hazards associated with pipeline transport of carbon dioxide.