Patent · US Expired

Method for the catalytic removal of nitrogen oxides from exhaust gases by means of a reducing agent

US4963332A · kind A · utility

74Cited by

1References

5Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Reinhold Brand · Hanau, DE
Bernd Engler · Hanau, DE
Peter Kleine-Moellhoff · Alzenau, DE
Edgar Koberstein · Alzenau, DE

Key dates

Filing date	Jul 25, 1989
Grant date	Oct 16, 1990
Priority date	—
Expiry date	Jul 25, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for the removal of nitrogen oxides contained in exhaust gases of an optionally fluctuating composition with a temperature of 0.degree.-600.degree. C. by means of catalytic reduction at a preselected stoichiometric ratio between the concentration of reducing agent and the concentration of nitrogen oxide in which the reducing agent is dosed in a pulsed manner.

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