Comparison of Predictive Models for Determination of Supercritical Fluids Solubility in Heavy Oils

Sustainable process-product development & green chemistry

SCF as Solvent Substitutes (T1-8P)

Mr Carlos Campos
Federal University of Rio de Janeiro
PEQ / COPPE / UFRJ
PEQ/COPPE/UFRJ, Cidade Universitária, CT, Bl.G, Sala 201, 21949-900, Rio de Janeiro, Brasil.
Brazil

Prof Fernando Pellegrini Pessoa
Federal University of Rio de Janeiro
Dpt. of Chemical Engineering
Centro de Tecnologia, Bloco E, Sala 209
Cidade Universitária, Ilha do Fundão
CEP 21949-900
Rio de Janeiro, RJ, Brasil
Brazil

Dr Angela Uller
UFRJ
PEQ / COPPE / UFRJ

Brazil

Mr Pedro Falcão
UFRJ
PEQ / COPPE / UFRJ

Brazil

Keywords: SCF solubility, predictive, UNIFAC, SAFT, cubic EOS

In this work a comparison between two predictive methods and cubic equations of state to calculate supercritical fluids solubility in heavy oils is presented. The first thermodynamic model is based on activity coefficient which is calculated by a group-contribution method (UNIFAC) and the second one is based on SAFT approach. Both predictive methods show better results than cubic EOS in comparison with experimental data for the systems containing supercritical fluids and oil fractions under investigation.

See the full pdf manuscript of the abstract.

Presented Monday 17, 13:30 to 15:00, in session SCF as Solvent Substitutes (T1-8P).