Patent · US Active

Multi-stage process for purifying carbon dioxide and producing acid

US7927573B2 · kind B2 · utility

2Cited by
52References
17Claims
0Family size

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Inventors

Key dates

Filing dateSep 22, 2009
Grant dateApr 19, 2011
Priority date—
Expiry dateSep 22, 2029

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02P20/151
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Carbon dioxide is purified by processes employing NOx-rich sulfuric acid that can be formed by removal of SO2 from the carbon dioxide.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.