Low temperature process for regenerating spent sulfuric acid
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United States of America Patent
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Issued Date -
Mar 13, 2008
app pub date -
Sep 8, 2006
filing date -
Sep 8, 2006
priority date (Note) -
Abandoned
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Abstract
A process for the regeneration of spent sulfuric acid comprises decomposing the spent sulfuric acid to SO.sub.2, a reducing agent, such as hydrocarbon and water, preferably in a thin film on a solid surface in the presence of a hydrocarbon reducing agent. The SO.sub.2 generated in the decomposition step is converted to SO.sub.3 in the presence of water and concentrated sulfuric acid is condensed out.
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