气升式反应器微藻生长模拟

G. Lara, L. Moreno, Yendery Ramírez, L. Cisternas
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引用次数: 1

摘要

采用计算流体动力学(CFD)方法对气升式微藻生长反应器的流动动力学进行了模拟。该模型应用于反应器的运行和优化,给出了不同空气注入流量下的液体运动和二氧化碳轨迹的有价值的图像。该模型的一个新颖之处在于空气和二氧化碳在不同的位置被注入。在反应器的底部注入空气,在反应器的下坡区域注入CO2,以获得较长的CO2路径,改善其传递。结果表明,建模是控制反应堆运行的有效工具;例如,避免微藻的沉积或探测二氧化碳浓度极低区域的存在。
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Modeling an Airlift Reactor for the Growing of Microalgae
The flow dynamics of an airlift reactor for the growing of microalgae is modeled using Computational Fluid Dynamics (CFD). The model is applied to the operation and optimization of the reactor, giving a valuable picture of the liquid movement and carbon dioxide trajectory at different air injection flow rates. A novel aspect of the model is that air and carbon dioxide are injected at separated locations. Air is injected at the bottom of the reactor and CO2 injection takes place in the downcomer region of the reactor to obtain longer CO2 paths, improving its transference. The results show modeling is a useful tool in the control of the reactor operation; for example, in avoiding the sedimentation of microalgae or for detecting the existence of zones with extremely low CO2 concentrations.
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