an overview of crossflow filtration technology crossflow … · 2017-03-12 · an overview of...
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CROSSFLOW FILTRATION TECHNOLOGY
Tamanend Wine ConsultingAn Overview of Crossflow Filtration Technology
MEMBRANE TECHNOLOGY
a “proven technology”
food and dairy industry,
water purification
treatment of liquid fluent streams,
Increasing presence into
pharmaceutical
biotechnological
industries purifying products of high value and low volume
and wine
HEALTH BASIS OF CROSSFLOW FILTRATION
Filter aids have been classified as hazardous
materials
Provokes lung diseases due to PM10
Environmental effects due to sludge
deposition
CROSSFLOW FILTER - BUSINESS BASIS
DE/Kieselguhr disposal costs likely to rise due to hazardous
human and environmental concerns
Europe currently 60 to 120 €
Going to 600 €
Environmental effects due to filter cake production creating
public relations issues
Reduced labor per liter filtered
More flexible capacity
Reduced number of filtrations
CFF/TFF ADVANTAGES
Wine Quality
Single Filtration Step minimizes wine movement
Sterile level clarity improves wine sanitation
Improve subsequent wine treatments
Heat Stability
Brighter wine – Transfer direct to cold stabilization
Cold stability
More efficient
Fining
Faster more compact lees
REPRESENTATIVE UNITS
Romfil (Euromachines USA US Dist.)
Padovan (ATP US Dist.)
Vaslin Bucher (Gusmer Cellulo US Dist.)
Velo (Scott Labs US Dist.)
Koch
Pall
Sartarious
CROSSFLOW VS DEAD HEAD FILTRATION
FILTRATION CURVE DYNAMICS
CROSSFLOW SURFACE EFFECTS
CFF/TFF ADVANTAGES II
Cost Savings
Filtration process requires less operator time
Single step from 1% solids 0.2 micron saves two
standard filtration steps
Can operate on 22 hour day reducing filtered unit
cost and need to upsize
SIZE REJECTION CHART
MICROFILTRATION ULTRAFILTRATION
NANOFILTRATION REVERSE OSMOSIS
From Armourtech.co.nz
MEMBRANE CUTOFF
SYMMETRIC/ASYMMETRIC
symmetric
membrane pore diameter equal through cross
section
membrane thickness causes resistance to mass
transfer
membrane acts as a selective barrier.
SYMMETRIC/ASYMMETRIC II
Asymmetric
pore size at the surface is small relative to cross section
skin (thin top of the layer) determines selective barrier.
large particles do not enter body of the membrane
high permeation rate of a very thin membrane
high selectivity of a dense membrane
SYMMETRIC/ASYMMETRIC III
Asymmetric II
Selectivity result of membrane
pore sieving
hydrophilic-hydrophobic interactions
membrane charge
Construction in two parts
Skin 1 to 2 μ
Body porus 200 to 500 μ
SYMMETRIC/ASYMMETRIC
Symmertric – Top View
• Symmetric Xs Section
Symmetric Top View
SYMMETRIC/ASYMMETRIC
Asymmetric
• Asymmetric cross section
MEMBRANE PHYSICS
PinTMP Pp+=
MEMBRANE PHYSICS
PinTMP
PoutPp
+
2=
MEMBRANE DYNAMICS
MEMBRANE DYNAMICS
MEMBRANE CONFIGURATIONS
Conventional Configurations
Polymeric membranes
Spiral
Tubular/Hollow fiber
Plate and Frame
Inorganic Membranes
Tubular
Specialized and Proprietary
SPIRAL WOUND
TUBULAR POLYMERIC MODULES
CERAMIC TUBULAR MODULES
MODES OF OPERATION
Batch Operation
Simple Batch
Without recirculation
With recirculation
Fed Batch
Without recirculation
With recirculation
Continuous Operation
Single Stage
Multiple Stage
PROCESS SCHEMATIC
MODES OF OPERATION
SIMPLE BATCH WITH RECIRCULATION
CONTINUOUS WITH RECIRCULATION
MULTIPLE STAGE
REPRESENTATIVE SYSTEM
REPRESENTATIVE SYSTEMS
REPRESENTATIVE SYSTEMS
CROSSFLOW FILTRATION TECHNOLOGY
Tamanend Wine ConsultingThank you for coming