Evaporator for sagd process

A process for retarding foaming in an evaporative water purification system utilized in an oil recovery facility, comprising:

• providing an evaporator, including a sump, and a weir;
• employing the weir to divide the sump into a main sump and a blowdown sump;
• flowing brine including oil over the weir from the main sump into the blowdown sump;
• discharging the brine from the main sump and circulating the brine to the evaporator exchanger;
• and,
• discharging oil from the blowdown sump and removing same from the system.

A closed loop contaminant control system for an evaporative water purification process for an oil recovery facility, the system comprising:

• an evaporator including a sump, a water inlet, a steam and distilled water discharge, an oily water discharge and a brine water discharge, an oil skimming well disposed in the sump and dividing the sump into a main sump and a blowdown sump, wherein the brine water discharge communicates with the main sump and the oily water discharge communicates with said blowdown sump;
• a distillate tank adapted to receive the steam and distilled water from said evaporator and adapted to discharge distilled water and steam at two separate locations wherein said distillate tank has a level controller for controlling 1) the energy supplied to the evaporator and 2) distilled water production;
• and,
• a wash tray located in the distillate tank, the wash tray adapted for washing the steam before a discharge of the steam from the distillate tank.