Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing copper sulfide
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United States of America Patent
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Mar 3, 2015
Grant Date -
Apr 8, 2010
app pub date -
Sep 29, 2009
filing date -
Oct 2, 2008
priority date (Note) -
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Abstract
The present invention is a process for desulfurizing hydrocarbon feedstreams with alkali metal compounds and regenerating the alkali metal compounds via the use of a copper sulfide reagent. The present invention employs the use of a copper sulfide reagent to convert alkali metal hydrosulfides in the generation or regeneration of the alkali hydroxide compounds which may be utilized in a desulfurization process for hydrocarbon feedstreams. Additionally, in preferred embodiments of the processes disclosed herein, carbonates which form as byproducts of the desulfurization process, and are non-regenerable with copper sulfide, are removed from the alkali hydroxide stream.
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