Method and apparatus for selective catalytic reduction of NOx
US7776280B2 · kind B2 · utility
7Cited by
134References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 2005 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Jun 17, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus comprises parallel first and second exhaust gas passageways, a urea injection system, a hydrolysis catalyst, and an SCR catalyst. The urea injection system is configured to inject urea into the first exhaust gas passageway. The hydrolysis catalyst is positioned in the first exhaust gas passageway to generate ammonia at least partially from urea injected into the first exhaust gas passageway by the urea injection system. The SCR catalyst is positioned downstream to reduce NOx with the generated ammonia. An associated method is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.