喻健良;刘长远;闫兴清;曹琦;刘少荣;

• 1:大连理工大学化工学院

摘要(Abstract)：

为解决CO_2捕集、利用及封存过程中，输运管道断裂泄漏引起的危险性难以预测的问题，首先，采用计算流体动力学模拟技术，获取高压管道内超临界CO_2泄漏的扩散特征和危险范围。然后，将射流过程中产生的干冰对扩散区域远场流动的影响附加到平流扩散过程的释放速率和释放温度中，构建高压管道内超临界CO_2泄漏扩散数值模型，并依据试验结果验证模型的可靠性及精度。最后，归纳不同泄漏口直径下CO_2物质的量分数和温度的分布特征。结果表明，泄漏口直径为50 mm、100 mm和233 mm时，轴向危险距离分别为40 m、80 m、130 m,径向危险范围距离分别为2 m、4 m、8 m。

关键词(KeyWords)： 安全工程;管道运输;超临界CO_2;泄漏特性;计算流体动力学

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 喻健良;刘长远;闫兴清;曹琦;刘少荣;

DOI: 10.13637/j.issn.1009-6094.2021.0159

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