The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 1988
Filed:
Oct. 24, 1986
Applicant:
Inventors:
Torsten Schmidt, Berlin, DE;
Robert Walter, Langenhagen, DE;
Assignee:
Kali-Chemie Aktiengesellschaft, Hanover, DE;
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C01B / ;
U.S. Cl.
CPC ...
423239 ; 423235 ;
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.