II. International Seminar Desalination Antofagasta / Chile 1 Influence of Pumps and Energy Recovery Systems on the Specific Energy Consumption in Seawater Reverse Osmosis Facilities Uwe Dortmund (Presenter) Wolfgang Kochanowski Stephan Bross Gerhard Schwarz KSB Aktiengesellschaft 67227 Frankenthal (D)
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II. International Seminar Desalination Antofagasta / Chile1
Influence of Pumps and Energy Recovery Systems on the Specific Energy Consumption in
KSB perfectly matches all components to create one hydraulic system that markedly minimizes energy consumption.
As easy as one, two, three: the key components
II. International Seminar Desalination Antofagasta / Chile11
5. Session Title = Operation and Maintenance of Desalination Plants
SalTec®:Working Principle
-The Pressure Exchanger operates trouble free controlled by the speeds of the recirculation pump and the step motor controlled rotating valve
- KSB is the only manufacturer to recreate the toughconditions of a desalination plant in its own labs
HP Feed Outlet
LP
HP
Step Motor
LP Feed Inlet
LP Brine Outlet
HP Brine Inlet
v = 1.02 m/s
v = 0.98 m/s
Check Valves
Rotating Valve
HP Feed Outlet
LP
HP
Step Motor
LP Feed Inlet
LP Brine Outlet
HP Brine Inlet
v = 1.02 m/s
v = 0.98 m/s
Check Valves
Rotating Valve
II. International Seminar Desalination Antofagasta / Chile12
5. Session Title = Operation and Maintenance of Desalination Plants
Reduction of Water Costs with KSB’s SalTec®
Save on energy and water, for low life cycle costs
Virtually loss-free energy recoveryMixing by volume of flow, ≤1,0% through pressure exchanger
Constantly high efficiency during long term operationIdeally matched components from one single sourceNo efficiency drop over timeAutomatic adjustment to changed operating conditionsConstant salt concentration upstream the membrane
High operational availabilityAnti corrosive duplex stainless steel materialNo vibrations, less noise
Low investment costsAll components from one single sourceWear-free operation because of
- low speed- SIC bearings
No lubrication requiredNo hydraulic drive system requiredNo risk of site contamination from oilWide operating range
Saltec-System:= Keep specific energy consumption down to low levels= lowest life cycle costs
II. International Seminar Desalination Antofagasta / Chile13
5. Session Title = Operation and Maintenance of Desalination Plants
Features of Advanced High Pressure Feed Pump Design HGM-ROProven hydraulics from KSB boiler feed
pumps guarantee highest efficiencies
Medium-lubricated axial bearing for start-up / stop
Feet and flange for
main tie bolts separate
Balancing by patented, self-
adjusting balancing device
ensures highest efficiencies
4 Due to static pressure
difference acting on the shaft,
reliable in operation as well as
in transient operating conditions.
4 Compact design
4 Disassembly / reassembly
from either side
4 Wetted metallic parts
made of duplex material
Dry shaft
Axial inlet:
4 Minimum
NPSH
required
4 only one
mechanical
seal
required
Medium-lubricated
radial bearings:4 extremely short distance
between bearings for
maximal smooth running
4 no oil/grease necessary
4 reduced maintenance
II. International Seminar Desalination Antofagasta / Chile14
5. Session Title = Operation and Maintenance of Desalination Plants