Removing mercury from crude oil using a stabilizer column
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United States of America Patent
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Sep 20, 2016
Grant Date -
Apr 23, 2015
app pub date -
Aug 14, 2014
filing date -
Oct 17, 2013
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Abstract
Methods, systems and designs are provided for removing mercury from crudes. Crude oil is heated to a temperature above 100° C. in a stabilization column for a time sufficient to convert all of the forms of mercury in the oil into the elemental mercury form. The elemental mercury is then stripped from the crude oil by flashing, or preferably by gas stripping with a gas injected at the bottom of the column. Either process transfers the elemental mercury from the oil phase into the gas phase. Elemental mercury can then be removed from the gas phase by methods such as condensation, precipitation, or absorption either alone or in combination.
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