I want to model the supercritical separation process in aspen plus. This involves phase behavior modeling of supercritical CO2-Solid and supercritical CO2-Liquid systems. I know how to use Aspen Plus. But, never, performed such type of modeling at high pressure.
Please suggest to me some guide resource where step-by-step instructions are provided for doing this job. I made initial attempts by regressing experimental VLE data for getting optimized binary interaction parameter but no luck. I don't know what else I am missing. Thanks for your help.
Dear Wahab Maqbool,
SFE process simulation modelling is based on the concept of theoretical stages in which the extractor is split into a cascade of flash modules. Each stage of the column is assumed as a single flash at fixed temperature and pressure. Using the modular structure of the Aspen Plus® , a rigorous sequential simulation for the process was implemented using flash separator unit available in Aspen Plus® version 10.2.1 to model the cascade of flash modules. The process flow diagram of the SC-CO2 extraction column is attached in Figure . A variation of the number of theoretical stages and other process variables provide information on the number of theoretical stages depending on the purity of the products, and for different operating conditions. Using the developed RKA thermodynamic model and the steady-state equilibrium-stage extractor model described previously, different SFE schemes were applied to explore the feasible operating domains for the production of refined quality palm oil using super critical CO2.
A very important aspect of simulation is choosing the correct thermodynamic model. Ideally, it would be great if you have the VLE data at the operating conditions and then you can check this data against the predictions from the simulator.
Please find attached herewith related articles,
regards,
Prem Baboo
https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&cad=rja&uact=8&ved=0ahUKEwjO6ovcj9TKAhUFI44KHdBiDooQFgg6MAU&url=http%3A%2F%2Fwww.scielo.br%2Fscielo.php%3Fscript%3Dsci_arttext%26pid%3DS0104-66322000000400039&usg=AFQjCNFuh8Rfd7Df9LBEY0VsrFmQji80JQ&sig2=T_9ko7Ji3AWSEir-SUS1Pw
Article Advancement in Neem oil Extraction Process
such simulations are previously conducted in
http://www.jmcampbell.com/tip-of-the-month/?s=dense
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