Process for regenerating spent sulfuric acid

Details Process for regenerating spent sulfuric acid Process for regenerating spent sulfuric acid

2005-12-14

2008-03-18

Vanoy, Timothy C. (Department: 1793)

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

C423S525000, C423S526000, C423S528000, C423S529000, C423S531000

Reexamination Certificate

active

07344692

ABSTRACT:
A process for the regeneration of sulfuric acid contaminated with hydrocarbons and water to produce pure concentration acid comprising: contacting sulfuric acid contaminated with hydrocarbons and water with oxygen and elemental sulfur in the presence of a vanadium containing catalyst in a reaction zone, maintaining at least a portion of the acid in the liquid phase, converting hydrocarbon to carbon oxides and water, and converting sulfur and sulfurdioxide to sulfurtrioxide, separating the reactor effluent into a vapor stream and a liquid stream and cooling and partially condensing of the vapor stream to concentrate clean acid.

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