US 10,435,307 B2 · Evaporator for SAGD process

Abstract

A closed loop contaminant control system for an evaporative water purification process at an oil recovery facility includes an evaporator having a water inlet, a distilled water discharge, and an oil and brine water discharge. A sump in the evaporator is divided by an oil skimming weir into a main sump and a blowdown sump, with the oil and brine water discharge located proximate the blowdown sump and the steam discharge located above the oil and brine discharge. A distillate tank receives distilled water from the evaporator and discharges the distilled water. The distillate tank has a level controller, other controllers provided for the system include a distilled water flow meter, a blowdown flow meter, a cycle controller, a total flow controller, a hardness controller, and a silica controller.

Claims19

Dependent claims

A process for evaporative water purification 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 a liquid including brine and oil in a continuous manner over the weir from the main sump into the blowdown sump in order to retard a foaming of the oil in the sump;
discharging brine from the main sump and circulating the brine to the evaporator;
discharging oil from the blowdown sump and removing the oil from the system;
and
controlling a level of liquid in the blowdown sump.

4 more elements

Dependencies are inferred from the claim text.

Evaporator for SAGD process

Life of this patent

Evaporator for SAGD process

Life of this patent

Abstract

Claims19