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Physical modelling
and testing, with the aid of large-scale test facilities, underpins
the vast majority of FMP's research work. Whether to collect data
on equipment performance, test out concepts, or validate software
models, physical testing is essential.
Over the years,
FMP has acquired all the infrastructure required to undertake physical
modelling of stirred tank reactors at a wide range of scales including
mixing vessels up to 2.7m diameter, and specialist workshops to
construct or adapt specific models. And if that is not sufficient,
the rest of BHR Group's wide range of test
facilities can be used.
Search
our site for your specific interest, or contact
us to discuss your particular requirements.
Techniques,
Equipment and Software in Use
| Mixing
time: |
Conductivity
probes
Colourisation/decolourisation
technique
|
| Torque: |
Shaft-mounted
strain gauges
Coesfield
device
Fluid
device |
| Local
solid concentration: |
Conductivity
probes
|
| Off-bottom
suspension: |
Visual
inspection
Ultrasound
Doppler flowmeter (UDF)
|
| kLa: |
Dynamic
measurement
Steady state
H2O2 reduction technique |
| Gas
hold-up: |
Ultrasound
Doppler flowmeter (UDF) |
| Drop
size: |
Image
capture by video |
| Flow/turbulence: |
Two component
laser Doppler anemometer (LDA) (burst spectrum analyser, shaft
encoding)
|
| Flow
visualisation: |
light/laser
sheet flow visualisation |
| CFD
Codes and Computers: |
FLOW-3D
Fidap
Fluent
SGI Workstation
Access to Cray |
|
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BHRSolutions'
extensive range of equipment includes:
| Equipment |
Scale |
| Perspex
and glass vessels |
0.3-0.6m
diameter |
1.2
< H/T < 3 |
| Stainless
steel vessel |
1.8m
diameter |
H
= 1.2T |
| Concrete
vessel |
2.7m
diameter |
H
= 1.2T |
| Fibreglass |
3.9m
diameter |
H
= 1.2T |
| Impellers |
Range
of commonly used impellers in stock
- see below |
| Drives |
Range
of sizes fitted with variable speeds |
| Air
delivery |
Oil
free blower |
| Pumps,
valves, pipework etc. |
Large
range of existing equipment available |
Customised models
can also be constructed.
Agitators
We stock numerous types of agitators at different diameters to fit
our different vessels, including:
- six bladed
disk turbines
- pitched blade
turbines
- flat blade
turbines
- hydrofoils
(A310, A315, HE-3, LE20 ...)
- Pfaudler
retreat curve impellers
- disk turbines
- saw tooth
impellers
- hybrid disk
turbines
Experimental
mixing of viscous fluids
A wide range
of parameters can be measured.
| Parameter |
Batch
Systems
|
Continuous
Systems
|
| Flow |
Flow
Patterns |
Flow
Patterns |
| |
Flow/Turbulence |
Flow/Turbulence |
| Power |
Impeller
power draw (ungassed or gassed) |
Pressure
drop |
| Mixing |
Mixing
times |
Mixing
profile CoV |
| Gas
liquid mixing |
Gas
liquid mass transfer (kLa) |
Gas
liquid mass transfer (kLa) |
| Gas
hold up |
Gas
hold up |
| Bubble
sizes |
Bubble
sizes |
| Liquid-liquid
mixing |
Droplet
sizes |
Droplet
sizes |
| Reaction |
Azo-coupling |
Azo-coupling,
hydrolysis |
| Solid-liquid
mixing |
Solids
suspension |
|
| Local
solids concentration |
|
| Solids
drawdown |
|
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