A condensate polisher for a district heating plant in Michigan was shipped last week.
|Dual Skid-Mounted Condensate Polisher for District Heating Plant in Michigan|
Utility District Heating
|Water treatment application:||Condensate Polisher to scavenge trace hardness and iron|
|Expected savings:||Loss prevention keeping heat transfer surfaces clean and reliable for years of trouble free operation|
|Operating conditions:||Flow through the units|
|System configuration:||Dual Parallel. On-Board Controller has a relay to indicate start and stop of regeneration process on each polisher vessel. |
The plants in house DCS system then ramps down the flow rate to each condensate polisher based upon regeneration schedule and times
|Materials of construction:||Pressure vessels are 304 stainless steel with 125 psig ASME code stamped|
All face piping is welded and flanged Schedule 40 SS 304ss welded to B31.1 standards
|Valve and actuators type||All automated valves are Bray valve Lug style for 150 ANSI flanges.|
Actuators are Bray pneumatic.
|Control philosophy:||The utility didn’t want to reinvent a control scheme within their DCS, so the off the shelf controllers are being used locally to control both units. |
System parameters like individual tank flow and regeneration status are outputted to the plants DCS system.