Pfaudler Mixing Systems
Reduce processing times
and save costs
R E A C T O R
S Y S T E M S
Reduce processing times and save costs with
Pfaudler Mixing Systems
PFAUDLER-BALFOUR - a worldwide leader in the
manufacture of process equipment -produces
mixing systems to meet any application, process
condition, mixing operation and viscosity range.
TYPICAL FLOW PATTERNS
Pfaudler-Balfour can recommend the optimum
mixing system for specific requirements and show
how it can be modified or changed. If required, a
custom impeller or agitator can also be designed
and built.
Significant cost savings can be achieved by
“mixing and matching” impellers to:
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optimise product quality and yield
reduce mixing/process times
optimise the agitation process
maximise energy efficiencies
ensure performance effectiveness
respond to changing market conditions
Curved Blade Turbine
Pfaudler Mixing Systems
• improve product quality and yield while minimising
costs.
Optimal agitation process
The Cryo-Lock option is a complete all in one mixing
system based on a single reactor with a wide variety of
interchangeable agitator blades. This flexibility means
blade configurations can be altered to best suit the
requirements of each product.
For all mixing systems, Pfaudler can also produce
computer simulations to maximise the efficiencies in each
of the five basic processes:
• mixing/blending
• suspension
• gas absorption/dispersion
• emulsification
• heat transfer
Turbofoil Impeller
Pfaudler Mixing Systems - improve product
quality and yield while minimising costs
Reduced process times
With some products, switching to a turbofoil
blade from a standard fixed agitator can lead
to mixing times being reduced by half while
pumping capacity is almost doubled.
1
Increased
pumping capacity
Reduced
mixing time
1,0
2,5
0,8
2,0
0,6
1,5
0,4
1,0
0,2
0,5
0
0
2
3
4
5
RCI CBT PBT TBF
RCI CBT PBT TBF
Blade Type
1100 835 890 990 P/V=Constant 1100 835 890 990
6
7
Cryo-Lock® Family of Agitators
Blending
1 ANC Anchor
2 PBT Pitched Blade Turbine
3 FBT Flat Blade Turbine
4 MFI Multi-Flight Impeller
5 RCI Retreat Curve Impeller
6 TBF Turbofoil
7 CBT Curved Blade Turbine
Heat
Transfer
Emulsion
Suspension
Gas
Dispersion
Performance characteristics
1
ANC anchor
• low shear
• tangential flow
• high torque
• for higher viscosity fluids
• can operate at low liquid levels
Unlimited impeller options
Impeller and baffle
configurations can be
adapted to serve all basic
process operations. In
addition, other factors, such
as drive speed and baffle
arrangement, can be altered
to enable most impellers to
be used in more than one of
the five basic unit
operations.
5
RCI Retreat Curve Impeller
• versatile, general purpose design
• high radial flow
• wider baffling required
• insensitive to viscosity variations
• suitable for low liquid levels, small
batches
2
PBT Pitched Blade Turbine
• moderate shear (higher flowto-shear ratio)
• combined radial and axial flow
• relatively high drive speed
3
FBT Flat Blade Turbine
• high shear load
• pure radial flow
4
MFI Multi-Flight Impeller
• where single impeller is inadequate
• for high viscosity fluids
• lightweight solids in narrow vessels
6
TBF Turbofoil
• low shear forces
• high axial flow at relatively
low baffling
• low torque
• low power-consumption
7
CBT Curved Blade Turbine
• high shear
• radial flow
• wider baffling required with
low viscous fluids
Improve power and energy efficiencies
Power applications and advantages
Homogenisation
A high performance agitator Turbofoil (3.2kW) needs
35% less energy compared to an Impeller (5.1kW).
On the basis of BE 6300, SG = 1.3 and viscosity = 20cp.
Power Diagram
AE/BE/CE 6300
for SG = 1.3 and viscosity = 100cp
12
Agitator Power (KW)
Increased energy efficiencies
Effective system design means power input can be
reduced by achieving:
• optimum heat transfer
• uniform dissipation of energy and
• low energy demand.
Energy savings of up to 35 per cent have been
achieved.
10
8
6
4
2
0
0
20
40 60 80 100 120 140
Agitator Speed (rpm)
Impeller
TBF
Drive VSO 8/100
Gas-Dispersion
Replacing an Impeller (RCI) with a standard agitator
(CBT) can triple gas-absorption rates. On the basis
of 1 kW/m3, 630 m3/h instead of 220 m3/h.
Suspension
For solid particles distribution needs, the Pitched
Blade Turbine (PTB) at 4.2 kW can lead to energy
savings of 3.7 kW over the Impeller (RCI),
representing a considerable cost saving during the
year
Crystallisation
Replacing the anchor (ANC) with the double stage
Turbofoil can increase output by 30%.
Drive VSO 16/100
Minimise downtimes and maintenance costs
Safety and environmental protection
The dismountable system is corrosive resistant and
considerably reduces the risk of leakage caused by
splitting vessels and replacing gaskets. Cryo-Lock
enables gasket sizes for BE 6300 vessels to be reduced
by 2,500 mm compared to the CE 6300 versions,
resulting in a 60% reduced leakage rate at vacuum
conditions.
Performance effectiveness
Further cost efficiencies result from Cryo-Lock’s® unique
dismountable design which means the single shaft stays
in place so only the blades are changed.
Liquid nitrogen cooling enables the blade to be easily
accessed and removed quickly. Cryo-Lock impellers in a
BE vessel can be changed in less than two hours
compared to two days or more for standard impeller in a
CE vessel design.
There is also no need to replace a Cryo-Lock agitator
shaft when only the impeller has suffered damage. This
can be changed inside the cleaned reactor without
removing the shaft, drive, motor or access cover.
Replacement agitators can also be stored
economically.
Pfaudler’s Glasteel® reactor technology means vessel
and agitator life is maximised for mixing corrosive
substances.
All these factors contribute to minimal downtimes and
maintenance costs.
Total Flexibility
Pfaudler-Balfour’s mixing technology offers total flexibility.
You can respond immediately to changing market
conditions by:
• reconfiguring your Glasteel® reactor
• modifying or completely changing the mixing
operation
To find out how Cryo-Lock can save costs by
optimising product quality and yield contact:
Pfaudler-Balfour
Leven, Fife, Scotland, KY8 4RW.
Tel: (01333) 423 020
Fax: (01333) 427 432
Email: [email protected]
Website: www.pfaudlerbalfour.co.uk
TECHNICAL DATA BULLETIN NO: 97-01-02
The perfect complement to
Pfaudler Mixing Systems.
Pfaudler-ProSol
Pfaudler In-Line Drives
Next generation mixing systems
For glass and alloy
mixing systems
Pfaudler-ProSol
Pfaudler In-Line Drives
See Technical Data Bulletin
No: 97-07-01
See Technical Data Bulletin
No: 97-02-01
R E A C T O R
S Y S T E M S