Extraction of ASO from spent sulfuric acid using liquid SO 2

Details Extraction of ASO from spent sulfuric acid using liquid SO 2 Extraction of ASO from spent sulfuric acid using liquid SO 2

2008-12-12

2011-12-27

Bullock, In Suk (Department: 1772)

Chemistry of hydrocarbon compounds

Saturated compound synthesis

By condensation of a paraffin molecule with an olefin-acting...

C585S721000, C585S730000, C585S731000, C502S022000, C502S024000, C502S028000, C502S036000, C502S517000

Reexamination Certificate

active

08084661

ABSTRACT:
A process for the regeneration of spent sulfuric acid including contacting spent sulfuric acid containing acid soluble oils (ASO) with sulfur dioxide to extract at least a portion of the ASO from the spent sulfuric acid into the sulfur dioxide. The sulfuric acid phase having a reduced ASO content and a sulfur dioxide phase containing at least a portion of the ASO may be recovered. The resulting sulfuric acid and sulfur dioxide phases may be further separated to recover ASO, sulfur dioxide, and sulfuric acid.

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