Patent · US Expired

Process for catalytic treatment of exhaust gases

US4732743A · kind A · utility

22Cited by

7References

14Claims

0Family size

Assignee

Kali-Chemie Aktiengesellschaft · DE

Inventors

Torsten Schmidt · Chemnitz, DE
Robert J. Walter · Thousand Oaks, US

Key dates

Filing date	Oct 24, 1986
Grant date	Mar 22, 1988
Priority date	—
Expiry date	Oct 24, 2006

Classification

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

Abstract

A process and apparatus for removing nitrogen oxides (NO.sub.x) from an exhaust gas by catalytic reduction in the presence of added ammonia in which at temperatures of up to 300.degree. C. the exhaust gas is mixed with the ammonia in such a way that their residence time together before contacting the catalyst is at most one second.

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