Catalyst charge design
US8178068B2 · kind B2 · utility
0Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2004 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Mar 22, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/63
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.