摘要
Absorption of gaseous species into stationary droplets is a fundamental interest of mass transfer between liquid droplets and ambient gas, which plays a key role in atmospheric environment control and many industrial applications. In this paper, two different considerations including equilibrium and non-equilibrium relations at the interface are used to analyze and predict the absorption time for a physical absorption at a relatively low solubility of gas. For the equilibrium pattern, in the beginning period of absorption, the mass transfer rate is considerably rapid and afterward becomes slower and slower and finally comes to almost zero as the droplet concentration closes to the saturated value. Differently, when the non-equilibrium model is adopted, the interfacial concentration increases gradually with the bulk concentration of liquid droplet, and the absorption rate mildly decelerates with the increase of bulk one throughout the process, which leads to a longer absorption time. Based on the diffusion equation of species, the concentration distribution within the droplet at different times is computed. A solution for CO2 absorption into a small water droplet is given.
进静止微滴的气体的种类的吸收是在液体微滴和周围的气体之间的传质的基本兴趣，它在大气的环境控制和许多工业应用起一个关键作用。在这篇论文，在接口包括平衡和非平衡关系的二不同考虑被用来在相对低的溶解度 ofgas.For 为物理吸收分析并且预言吸收时间平衡模式在吸收的开始的时期，传质率是更加快速的并且后来越来越慢变得并且最后作为集中关上到浸透的价值的微滴来到几乎零。不同地，当非平衡模特儿被收养时，界面浓度与液体微滴的体相浓度逐渐地增加，并且吸收速率温和地随在整个这个过程的体积一的增加速度，它导致一更长的吸收时间。基于种类的散开方程，在在不同时间的微滴以内的集中分发是 computed.A 答案因为进小水微滴的 CO_2absorption 被给。
基金
Supported by the National Natural Science Foundation of China (No. 20176036).
