SLIDE 1
1
agenda
2
motivation extraction column design single-drop behavior
sedimentation mass transfer
Highly Viscous Systems Maria C. Quaresima, Markus Schmidt, Andreas - - PowerPoint PPT Presentation
Highly Viscous Systems Maria C. Quaresima, Markus Schmidt, Andreas - - PowerPoint PPT Presentation
Solvent Extraction Design for Highly Viscous Systems Maria C. Quaresima, Markus Schmidt, Andreas Pfennig mariachiara.quaresima@uliege.be Products, Environment, and Processes (PEPs) Department of Chemical Engineering Universit de Lige,
SLIDE 2
SLIDE 3
motivation
3
sources: fossil-based
bio-based
higher oxygen content lower vapor pressure higher viscosity pilot-plant based design is time consuming,
expensive
design based on lab-scale experiments
and simulations
SLIDE 4
the ReDrop concept
4
SLIDE 5
ReDrop simulation
5
SLIDE 6
single-drop sedimentation
6
2800 100 100 50 DN 200 camera nozzle for producing droplets rising droplet 1350 50 50 50 100 100 100
SLIDE 7
sedimentation EFCE system
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- M. Henschke, A.Pfennig, AIChE J., 45, 10 (1999).
1 2 3 4 5 6 7 20 40 60 80 100 120 140
rigid interface ideally mobile interface
T = 20 °C, n-butylacetate (d) + water (c) without mass transfer, Hoting (1996)
- ur experiments
terminal velocity in mm/s drop diameter in mm
SLIDE 8
single-drop sedimentation
8
rigid drop circulating drop
- scillating drop
deformed drop
dSW αSW a16 a15
- M. Henschke, A.Pfennig, AIChE J., 45, 10 (1999).
1 2 3 4 5 6 7 20 40 60 80 100 120 140
terminal velocity in mm/s drop diameter in mm
SLIDE 9
single-drop sedimentation
9
4 adjustable parameters: dSW a15 a16 αSW
system αSW Henschke d: n-butyl acetate c: water 10 Kalem et al. d: isododecane + D2EHPA c: water + Zn + H2SO4 2 Adinata d: toluene + paraffin c: water + PEG 5
SLIDE 10
increasing viscosity of EFCE system
10
continuous phase dispersed phase water n-butyl acetate + polyethylene glycol (PEG) + paraffin oil acetone
SLIDE 11
sedimentation velocity
11
αSW dSW
low viscous system
10 2.39
this system
5.44 4.28
d: n-butyl acetate, viscosity 0.797 mPas c: water + PEG, viscosity 7.928 mPas
T=20°C
Henschke model
2 4 6 15 30 45 60 75 90
sedimentation velocity in mm/s drop diameter in mm
SLIDE 12
single-drop mass transfer
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SLIDE 13
ATPS mass transfer
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- F. Buchbender, M. Schmidt, T. Steinmetz, A. Pfennig,
- Chem. Ing. Tech., 84, (4) 540-546 (2012)
10 20 30 40 50 60 70 0.9 1
dimensionless driving concentration difference y + residence time in s
exp calc diameter 1.24 mm 1.42 mm 1.56 mm c: phosphate buffer, viscosity 2.145 mPas d: PEG, viscosity 9.250 mPas mass-transfer component: protein albumin
SLIDE 14
conclusions and perspectives
viscosity influence on mass transfer fitting of models parameter further investigation of viscosity
dependency
implementing adapted models in
simulation
14
SLIDE 15
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