本文分两部分研究水洗对于单乙醇胺(MEA)的去除作用,一是吸收MEA气体,二是捕捉MEA液相颗粒,这两部分都从单一水滴的捕获机制开始,进而分析喷淋液滴群的吸收捕捉过程.模型计算结果表明,液滴粒径对于MEA气体吸收和颗粒捕获这两方面的影响是不同的,存在最佳的液滴粒径,使得联合脱除气体和颗粒的效率达到最高.喷淋初始速度对气体吸收和颗粒捕获过程的影响规律截然不同.在颗粒粒径0.5～10 μm的范围内,颗粒越小越难脱除.
This study investigates the MEA removal process of water-wash in two parts:one is absorbing MEA steam,the other is capturing MEA droplets.Both parts start from a single water droplet capturing process,and then consider the capture efficiency of the droplets.The results of MEA capturing process show that the water droplet diameter has different effects on capturing MEA gas and particulates.There exists an optimal droplet diameter making the highest removal efficiency when considering both MEA gas and particulates.The initial spraying velocity has an opposite effect on capturing MEA gas and particulates.The capture efficiency decreases with the decrease of the particulate diameter in range of 0.5～10 μm.
参考文献
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