ENCON Evaporators
97 Eddy Road Unit 6
Manchester, NH 03102-3226
Phone: (603) 624-5110
Fax: (603) 627-9520

Waste Oil Evaporator Process Description in Evaporation and Distillation Mode

1. Wastewater is collected in a holding tank, sump, or pit and is either pumped or gravity fed into the wastewater evaporator through a 1" NPT fitting on the lid.

2. The four (4) level probes in the standard auto-fill system provide:
     a) low-low (LL) level provides on/off control for the heat source
     b) low-auto (LA) level initiates the fill sequence
     c) high-auto (HA) level stops the fill sequence
     d) high-high (HH) level is a redundant safety for the high auto level

3. As the fluid flows into the wastewater evaporator and reaches the low-low level probe, the heat source will activate

Waste Oil Evaporation and Distallation Mode Flow Diagrams

4. Fluid will continue to flow until it reaches the high-auto level probe. At this point, the feed sequence will stop.

5. As the fluid comes to a boil and the evaporation process begins, the liquid level will drop down to the low-auto level probe. The feed sequence will activate and more fluid will be fed into the wastewater evaporator until the level reaches the high-auto level probe.

6. The wastewater evaporator system will continue to cycle in this manner until either the fluid temperature controller reaches the high set point, the cycle timer counts down to zero, or there is no longer wastewater to be fed to the evaporator.

Distillation Mode Only

7. The hot water vapor created inside the evaporator is drawn through the mist eliminator by the exhaust blower and pushed through the shell and tube condenser. The water vapor is condensed and then captured as high quality distilled water in the sump located directly below the condenser support shelf.

8. The dehumidified air passes through another mist eliminator and is returned for recirculation through the evaporator tank