Abstract—Supercritical fluids (SCF) are the fluids at the temperature and pressure above the critical temperature and critical pressure respectively. One of the important applications of these fluids is the precipitation of micro to nano range of particles. The aim of this work is to develop a mathematical model of the droplet moving in a supercritical carbon dioxide environment. The solvent chosen in this study is ethanol. The two film theory is used to calculate the mass transfer rate of carbon dioxide and solvent. Due to the mass transfer phenomena, the size of the droplet changes as it moves downwards in a chamber. The density of the droplet is also changing because its composition is changing. The droplet diameter, carbon dioxide mole fraction and moles of carbon dioxide & ethanol are calculated.
Index Terms—Supercritical, antisolvent, carbon dioxide,ethanol, droplet.
The authors are with the Department of Chemical Engineering, Jaypee University of Engineering and Technology, Guna– 473226, India (tel.:+91-7544-267310; fax: +91-7544-267011; e-mail: rahul.kumar@juet.ac.in,rahul.iitrahul@gmail.com, hari.mahalingam@juet.ac.in,kk.tiwari@juet.ac.in).
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Cite: Rahul Kumar, Hari Mahalingam, and Krishnakant Tiwari, "Modeling of Droplet Composition in Supercritical Antisolvent Process: Part A," International Journal of Chemical Engineering and Applications vol. 3, no. 6, pp. 456-460, 2012.
