Patent · US Expired

Process for purifying flue gases from nitrogen oxides

US4847058A · kind A · utility

6Cited by

4References

21Claims

0Family size

Assignee

Eka Nobel AB · SE

Inventors

Ingemar Odenbrand · Lund, SE
Jan Brandin · Lund, SE
Lars Andersson · Sandviken, SE
Sten Lundin · Lund, SE

Key dates

Filing date	Mar 16, 1988
Grant date	Jul 11, 1989
Priority date	—
Expiry date	Mar 16, 2008

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D53/8625
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Nitrogen oxide containing flue gases are purifyed by being subjected to an oxidation/reduction by means of a catalyst material, which comprises vanadium pentoxide on a support material. The purification is carried out in two separate steps, at which the content of nitrogen oxide in the flue gases are oxidized by means of a mordenite catalyst in the first step and are reduced by means of a catalyst of vanadium pentoxide on an acidic support material in the second step.

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