Steam generation from low quality feedwater

Details Steam generation from low quality feedwater Steam generation from low quality feedwater

E - Fixed Constructions

21

B

122/37

E21B 43/24 (2006.01)

Patent

CA 1166531

ICR 6362 -19- Abstract of the Disclosure Steam is produced from low quality feedwater. A feedwater stream and a superheated steam stream are intro- duced into a contactor vessel where the superheated steam is contacted with the feedwater thereby producing saturated steam in the contactor vessel and precipitating minerals from the feedwater in the contactor vessel. The produced steam is withdrawn from the contactor vessel and divided into a primary stream and a secondary stream. The pri- mary stream of produced steam is flowed to a use terminal such as a well for injecting the same into a subsurface formation as part of a steam flood system or such as a steam turbine. The secondary stream of steam is super- heated and recycled to the contactor vessel. Waste water containing the solid minerals precipitated from the feed- water within the contactor vessel is withdrawn from the contactor vessel through a waste water discharge conduit.

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