Services | Modernizations | Filtration
Outotec Power Wash for
Outotec Larox® RT, RT-GT, RB-SV
Outotec Power Wash for
Outotec Larox RT, RT-GT, RB-SV:
Optimized process results
Outotec Power Wash reduces cloth clogging and
Benefits
„„ Power wash unit installed
„„ Reduced cloth clogging
prolongs the lifetime of the cloth, enabling more
„„ Improved cake washing
efficient cake washing and higher filter performance.
„„ Higher capacity
Efficient cloth washing is a crucial step in the filtration
process as it helps to prevent cloth clogging. However,
traditional fan spray wash systems are not always
efficient enough.
Thanks to technological improvements, Outotec Larox
OEM filter cloths have higher mechanical strength,
which means that more powerful washing mechanisms
can be applied.
„„ Optimized process results
„„ Minimized operating costs
„„ Maximized availability
Additional washing for improved results
Outotec Power Wash is an additional, oscillating ­high
pressure cloth wash unit, developed for Outotec Larox
RT (Pannevis) Horizontal Vacuum Belt Filters for
enhanced cloth washing.
The Power Wash uses a shower system with needle jet
nozzles which achieve optimal wash results in one go.
More efficient washing improves process results in many
ways. Reduced cloth clogging keeps the performance
and capacity of the belt filter at a high level. Cake
washing is improved and lower cake moisture content
can be achieved.
Efficient washing helps reduce operating costs by
prolonging the lifetime of the filter cloth, thus reducing
both downtime and cloth change frequency. In most
cases, Outotec Power Wash reduces the overall wash
water consumed by the belt filter. .
System summary
Other options
The Power Wash unit consists of a shower system, an
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Brush cleaning for shower system
oscillator device, an additional sieve for the filtration
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Inverter control for high pressure
of the washing water, and an optional high pressure
pump (enabling pump pressure and
pump.
The optional high pressure pump is designed to provide
washing water pressure from 20 up to 100 bar, and
a flow rate of 120 l/min. The correct pressure will be
determined according to the filter cloth and process
conditions.
The shower system unit is installed in the feed end of
the filter, and operated via the OIU of the filter or the
plant automation system. Washing technology is based
on oscillating high velocity nozzles (needle jet). The
needle is directed according to the weave of the cloth to
guarantee the best wash result.
The installation is quick and easy, requiring a maximum
downtime of only 8 hours. During the installation, the
unit is adjusted to meet the specific process conditions
and requirements.
wash water volume adjustments)
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Oscillation frequency converter
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Vat for collection of the washing water
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Filter Performance Level Reduction due to Cloth Clogging
Restored performance (with Power Wash)
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Filter Performance Level (%)
90
80
Original performance
70
60
50
Filter
Filter
With Power Wash, the original
performance level of the cloth
(and of the filter) can be restored.
The washing frequency depends
on the process conditions and cloth
clogging speed. It can be once /shift,
once / day or even once / week.
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30
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Time
Case study on water savings
The overall water saving: 63 m 3 /week (19 %)
According to a case study made by Outotec on a Outotec
In this case study:
Larox RT 2100 filter, adding the Outotec Power Wash
unit achieved important savings in the overall water
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Power Wash washing pressure was 20 bar
consumption.
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Power Wash water usage was 7.2 m3/h
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Power Wash washing time 3h / wash
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Power Wash frequency once per week
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Normal wash water usage 2 m3/h -> 336 m3/week
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Normal wash water usage after installation of the
(21 m3/week)
Outotec Power Wash 1.5 m /h -> 252 m /week
3
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3
Total wash water usage (including water used
by the Outotec Power Wash) -> 273 m3/week
Short payback time
The payback time based on references in Finland has
Outotec provides custom modernizations for all Outotec
been approximately one year (calculated based on cloth
installations. These modernizations help improve
usage only). If improved process results are taken into
equipment
account the pay-back time is much shorter.
results. Please c­ontact your local Outotec office for
performance,
more information.
availability
and
process
Finland, September 2012.
Outotec develops and provides technology solutions for the sustainable use of Earth’s natural
resources. As the global leader in minerals and metals processing technology, Outotec has developed
over decades several breakthrough technologies. The company also offers innovative solutions for
the chemical industry, industrial water treatment and the utilization of alternative energy sources.
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