海底封存CO_(2)泄漏过程的气泡羽流数值模拟  

Modeling for Bubble Plume of CO_(2) Leakage from Ocean Storage

作　　者：张海滨 卢迪 王永昌 田文爽 宋学行[2] 赵陆海波 ZHANG Haibing;LU Di;WANG Yongchang;TIAN Wenshuang;SONG Xuehang;ZHAO Luhaibo(CNOOC Energy Conservation and Emission Reduction Center,Tianjin 300452,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China)

机构地区：[1]中国海洋石油集团有限公司节能减排监测中心,天津300452 [2]中国科学院上海高等研究院,上海201210

出　　处：《当代化工》2024年第12期2973-2981,共9页Contemporary Chemical Industry

基　　金：中海油能源发展股份有限公司重大科技专项项目(项目编号:2021286)。

摘　　要：碳捕获和储存(CCS)技术被认为是减少发电厂和钢铁厂大量CO_(2)排放的可行替代方案。CO_(2)储存是CCS的一部分,目的是将排放的CO_(2)保存在海底深处的地质区域。这种储存的CO_(2)的泄漏可能形成CO_(2)气泡羽流,导致pH降低和海洋环境的CO_(2)分压增加,引起海洋酸化等问题。将基于计算流体动力学两种多相流模型(Volume of Fluid-VOF模型和欧拉双流体模型),结合气泡群体平衡模型,模拟了CO_(2)气泡在海水中流动扩散、破碎、聚合过程,由此预测CO_(2)泄漏过程中羽流中CO_(2)气泡的上升速度和尺寸分布,从而预测海洋封存CO_(2)泄漏过程。Carbon capture and storage(CCS)technology is seen as a potentially alternative to reducing the massive CO_(2) emissions from power plants and steel mills.Carbon dioxide storage is part of CCS,which aims to keep emitted carbon dioxide in geological areas deep under the sea.This leakage of stored carbon dioxide can lead to CO_(2) bubbles plumes,leading to the lower pH,the partial pressure of carbon dioxide rising and the ocean acidification.In this paper,two types of multiphase flow models(Volume of Fluid-VOF model and Euler model)in the computational fluid dynamic method,were used to describe the dynamic behavior of CO_(2) bubble plumes caused by CO_(2) storage leakage in the ocean.The population balance model(PBM)was used to simulate the flow diffusion,coalescence,breakup processes of CO_(2) bubbles in seawater,so as to calculate the rise velocity and size distribution of CO_(2) bubbles plume,predicting the process of CO_(2) leakage in sea storage.

关 键 词：海底封存CO_(2) 气泡羽流 CFD模型 群体平衡模型 

分 类 号：TQ02[化学工程]