Oil recovery process including a high solids crystallizer for treating evaporator blowdown
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United States of America Patent
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Apr 3, 2018
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May 28, 2015
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Jun 2, 2014
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Abstract
An oil recovery process is provided where an oil-water mixture is recovered from an oil-bearing formation. Oil is separated from the oil-water mixture to yield produced water. The produced water is typically subjected to a pre-treatment process. After pre-treatment, the produced water is directed to an evaporator that evaporates at least some of the produced water and produces steam and an evaporator blowdown. The evaporator blowdown is directed to a dual stage crystallizer that concentrates the evaporator blowdown.
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