Next Article in Journal / Special Issue
Systematic Selection of Green Solvents and Process Optimization for the Hydroformylation of Long-Chain Olefines
Previous Article in Journal
CFD Simulation on Hydrodynamic Behaviors of Anaerobic Granule Swarms
Previous Article in Special Issue
Theoretical Analysis of Forced Segmented Temperature Gradients in Liquid Chromatography
Open AccessFeature PaperArticle

Splitting Triglycerides with a Counter-Current Liquid–Liquid Spray Column: Modeling, Global Sensitivity Analysis, Parameter Estimation and Optimization

1
Edible Oil System Business Unit, Alfa Laval Copenhagen A/S, 2860 Søborg, Denmark
2
Process and Systems Engineering Centre (PROSYS), Technical University of Denmark (DTU), Building 227, 2800 Kgs. Lyngby, Denmark
3
Department of Chemical Engineering, University of Chemistry and Technology Prague, Technicka 5, 16628 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Processes 2019, 7(12), 881; https://doi.org/10.3390/pr7120881
Received: 28 October 2019 / Revised: 18 November 2019 / Accepted: 21 November 2019 / Published: 26 November 2019
(This article belongs to the Special Issue Advanced Methods in Process and Systems Engineering)
In this work we present the model of a counter-current spray column in which a triglyceride (tripalmitic triglyceride) is hydrolyzed by water and leads to fatty acid (palmitic acid) and glycerol. A finite volume model (FVM) of the column was developed to describe the reactive extraction process with a two-phase system and validated with an analytical model from the literature with the given data set encompassing six experimental runs. Global, variance-based (Sobol) sensitivity analysis allowed assessment of the sensitivity of the sweet water glycerol content in respect to liquid density, overall mass-transfer coefficient, reaction rate coefficient and the equilibrium ratio to rank them accordingly. Furthermore, parameter estimation with a differential evolution (DE) algorithm was performed to obtain among others the mass transfer, backmixing and reaction rate coefficients. The model was used to formulate and solve a process design problem regarding economic and sustainable performance. Multi-criteria optimization was applied via DE to minimize total annual cost (TAC) and the Eco99 indicator by varying the steam inlet flow rate and distribution over the two steam inlets as the independent variables. The model and analysis was implemented in Fortran and Python where the Fortran model can also be embedded in a process simulator such as PRO/II or Aspen. View Full-Text
Keywords: vegetable oil; hydrolysis; modeling; spray column; sensitivity analysis; parameter estimation; optimization vegetable oil; hydrolysis; modeling; spray column; sensitivity analysis; parameter estimation; optimization
Show Figures

Figure 1

MDPI and ACS Style

Jones, M.N.; Forero-Hernandez, H.; Zubov, A.; Sarup, B.; Sin, G. Splitting Triglycerides with a Counter-Current Liquid–Liquid Spray Column: Modeling, Global Sensitivity Analysis, Parameter Estimation and Optimization. Processes 2019, 7, 881.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop