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:
May. 15, 2012
Filed:
Apr. 27, 2004
Sean Alexander Axon, Cleveland, GB;
Duncan Roy Coupland, High Wycombe, GB;
Brian Thomas Horner, Cambridgeshire, GB;
John Ridland, County Durham, GB;
Ian Carmichael Wishart, Oxon, GB;
Sean Alexander Axon, Cleveland, GB;
Duncan Roy Coupland, High Wycombe, GB;
Brian Thomas Horner, Cambridgeshire, GB;
John Ridland, County Durham, GB;
Ian Carmichael Wishart, Oxon, GB;
Johnson Matthey PLC, London, GB;
Abstract
A catalyst charge for ammonia oxidation, including the Andrussow process, comprises a first stage ammonia oxidation catalyst capable of oxidizing 20 to 99% of designed ammonia throughput, to produce a first stage product gas comprising unreacted ammonia, oxygen and nitrogen oxides, and a second stage ammonia oxidation catalyst capable of completing the oxidation of unreacted ammonia. Low levels of nitrous oxide are produced an extended campaign lengths may be seen.