Research and Development of Highly Efficient Sequestration System of CO_2 at the Deep Ocean Using Large-Scale Structure of Turbulent Bubbly Flows

利用大尺度湍流气泡流结构的深海CO_2高效封存系统研究与开发

• 批准号: 13355008
• 负责人: SAITO Takayuki
• 金额: $ 33.86万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13355008/
• 关键词: CO_2; Turbulent multiphase flow; Turbulent bubbly flow; Large-scale structure; Technology for mitigating the global warming; Deep sea sequestration; Gas Lift effect; Mass transfer; 大規模組織構造; 気泡群; 海洋固定; 地球温暖化; GLADシステム; 光ファイバー; 気液二相流; ガスリフトポン

On the basis of experimental and numerical approaches to elucidate large-scale structure and multi-scale structure of the turbulent bubbly flows in a large-diameter pipe, we have obtained the following results on the characteristics of large-scale GLAD System (Gas Lift Advanced Dissolution System for CO_2) as well as its environmental and cost performance:1)ExperimentsWe have elucidated the large-scale structure of the turbulent bubbly flows in a turbulence water vessel using PIV (Particle Image Velocimetry), LDA (Laser Doppler Anemometer) and 4-Tip Optical-fiber Probe newly developed by our research group as follows:a)The turbulent bubbly flows have the large-scale structure by superimpose the buoyancy flow induced by the bubble swarms onto the large-scale structure of the liquid-phase single phase flow.b)The coupling mechanism between the interface motion of a member bubble of the swarms and the motion of its surrounding liquid have been elucidated form a viewpoint of the local-scale … More structure.c)The coupling mechanism between mass transfer and the interface motion of a CO_2 bubble have been elucidated.2)ModelingWe have established a model of the bubble swarm motipn considered the large-scale structure of the turbulent bubbly flows:a)The region of a surrounding liquid flow induced, by the buoyancy of an individual single bubble is of about two times of the bubble diameter.b)The flow of the upper side of the bubble swarm is well approximated by the surrounding liquid flow induced by the buoyancy of an individual single bubble.c)Characteristic frequency components is caused mainly by the interface motion of the bubble and the center-of-gravity motion of the bubble.3)Numerical simulationWe have analyzed the large-scale structure of the turbulent bubbly flows using both DNS and LES methods. On the basis of the numerical analysis, we have grasped characteristics of the GLAD system using improved DEM.4)Prototype systemWe have developed prototype GLAD system of 149 mm in pipe diameter and 40 m in height. We have confirmed the system performance, environmental acceptability and the cost. Furthermore, we demonstrated its pumping performance using the 200-m scale test facility of the GLAD system. Less

本文通过实验和数值方法研究了大直径管内湍流泡状流的大尺度结构和多尺度结构，得到了大尺度GLAD系统的特性（CO_2气升式先进溶解系统）及其环境性能和性价比：1）实验研究利用PIV技术对湍流水槽中的泡状流进行了大尺度结构的研究利用本课题组新近开发的粒子图像测速仪（Particle Image Velocimetry）、激光多普勒测速仪（Laser Doppler Anemometer）和四端光纤探针（4-Tip Optical Fiber Probe）等仪器，研究了湍流泡状流的大尺度结构：a）将泡群诱导的浮力流叠加到液相单相流的大尺度结构上，使湍流泡状流具有大尺度结构; B）从局部尺度的角度阐明了泡群中单个气泡的界面运动与周围液体运动的耦合机制 ...更多信息 （2）模型建立了考虑湍流泡状流大尺度结构的气泡群运动模型：a）引起的周围液体流的区域，由单个气泡的浮力产生的浮力约为气泡直径的两倍。B）气泡群上侧的流动很好地近似于由单个气泡的浮力引起的周围液体流动。c）特征频率分量主要是由气泡的界面运动和气泡的重心运动引起的。3）数值模拟采用DNS和LES两种方法分析了湍流泡状流的大尺度结构。在数值分析的基础上，掌握了改进DEM的GLAD系统的特点。4）原型系统研制了管径为149 mm，高度为40 m的GLAD原型系统。我们已经确认了系统的性能，环境可接受性和成本。此外，我们证明了其泵送性能使用200米规模的GLAD系统的测试设施。少

项目成果

R.F.Mudde, T.Saito: "Hydrodynamical similarities between bubble column and bubbly pipe flow"Journal of Fluid Mechanics. 437. 203-228 (2001)

R.F.Mudde、T.Saito：“气泡塔和气泡管流之间的流体动力学相似性”流体力学杂志。

S.Kosugi, K.Niwa, T.Saito, T.Kajishima, K.Hamaogi: "Design factors in gas-lift advanced dissolution (GLAD) system for CO2 sequestration into the ocean"Chemical Engineering Science. Vol.56No.21-22. 6205-6210 (2001)

S.Kosugi、K.Niwa、T.Saito、T.Kajishima、K.Hamaogi：“用于将 CO2 封存到海洋的气升高级溶解 (GLAD) 系统的设计因素”化学工程科学。

K.Tsuchiya, H.Fukuta: "Critical Roles Played by an Oscillating Bubble in Bubble-Surface Phenomena"Multiphase Science and Technology. (in print). (2004)

K.Tsuchiya、H.Fukuta：“振荡气泡在气泡表面现象中发挥的关键作用”多相科学与技术。

Takayuki Saito, Takeo Kajishima, Katsumi Tsuchiya: "Local and Global Scale Structure of Bubbly Flows in GLAD (Gas Lift Advanced Dissolution System"Experimental Thermal and Fluid Science. (巻号未定)(掲載予定). (2004)

Takayuki Saito、Takeo Kajishima、Katsumi Tsuchiya：“GLAD（气体举升高级溶解系统”实验热与流体科学中气泡流的局部和全局尺度结构。（卷和期待定）（待出版）。（2004 年）

土屋活美, 石田俊樹, 齋藤隆之: "光ファイバープローブを用いた気泡計測の信頼性評価"化学工学論文集. Vol.29,No.3. 333-338 (2003)

Katsumi Tsuchiya、Toshiki Ishida、Takayuki Saito：“使用光纤探针测量气泡的可靠性”《化学工程学报》第 29 卷，第 333-338 期（2003 年）。