CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Supercritical carbon dioxide separation of fish oil ethyl esters by means of a continuous countercurrent process with an internal reflux

Marco Maschietti (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik) ; A. Pedacchia
Journal of Supercritical Fluids (0896-8446). Vol. 86 (2014), p. 76-84.
[Artikel, refereegranskad vetenskaplig]

The continuous countercurrent fractionation of fish oil ethyl esters using supercritical carbon dioxide is studied, modelling a process with internal reflux generated by a thermal gradient at the top stage. A methodology for process design is proposed and applied to determine the relationships between the temperature at the top stage (T-1), the number of theoretical stages (N), and the solvent to feed ratio (S IF), with the aim of providing a quantitative comparison with the external reflux process. The internal reflux process is viable and, for stated process specifications (mass fraction and recovery of C20 + C22 ethyl esters of 95%), provides comparable or better results than the external reflux process. For example, operating at 13.3 MPa and 50 degrees C, and keeping T-1 in the range (66-70) degrees C, the specifications are attained with N and S/F in the range 16-30 and 88-120, respectively. (C) 2013 Elsevier B.V. All rights reserved.

Nyckelord: Supercritical fluid, Fish oil ethyl esters, Continuous countercurrent, process, Internal reflux, Peng-Robinson equation of state, Omega-3, FATTY-ACID ESTERS, VAPOR-LIQUID-EQUILIBRIA, PHASE-EQUILIBRIA, TEMPERATURE-GRADIENT, FLUID CO2, FRACTIONATION, SOLUBILITY, OMEGA-3-FATTY-ACIDS, SQUALENE, RATIO



Denna post skapades 2014-06-16.
CPL Pubid: 199235

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik (2005-2014)

Ämnesområden

Kemi

Chalmers infrastruktur