A spatially resolved model for pressure filtration of edible fat slurries

van den Akker, H.E.A.; Hazelhoff Heeres, Doedo P.; Kloek, William

doi:10.1002/aic.17307

A spatially resolved model for pressure filtration of edible fat slurries

Title

A spatially resolved model for pressure filtration of edible fat slurries

Author

van den Akker, H.E.A. (TU Delft ChemE/Transport Phenomena; University of Limerick)
Hazelhoff Heeres, Doedo P. (Student TU Delft)
Kloek, William (FrieslandCampina)

Date

2021

Abstract

A spatially resolved one dimensional pressure filtration model was developed for a slurry of edible fat crystals. The model focuses on the expression step in which a cake is compressed to force the liquid through a filter cloth. The model describes the local oil flow in the shrinking cake modeled as a porous nonlinear elastic medium existing of two phases, viz. porous aggregates and interaggregate liquid. Conservation equations lead to a set of two differential equations (vs. time and vs. a material coordinate ω) for two void ratios, which are solved numerically by exploiting a finite-difference scheme. A simulation with this model results in a spatially resolved cake composition and in the outflow velocity, both as a function of time, as well as the final solid fat contents of the cake. Simulation results for various filtration conditions are compared with experimental data collected in a pilot-plant scale filter press.

Subject

cake consolidation
fat agglomerates
food processing
numerical simulation
pressure filtration

To reference this document use:

http://resolver.tudelft.nl/uuid:54ca149e-9f5d-43d6-a780-170e84dfe527

DOI

https://doi.org/10.1002/aic.17307

ISSN

0001-1541

Source

AIChE Journal, 67 (10)

Part of collection

Institutional Repository