Process and apparatus for treating combustion exhaust gas
US6863874B1 · kind B1 · utility
51Cited by
9References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1999 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Oct 4, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system and method for the control of emissions from a diesel engine exhaust, comprises a catalyst (14) to convert NO to NO2, a filter (16) to trap soot and hold it for combustion with the NO2, and a NOx absorber (28), with means to regenerate the NOx absorber by injecting reductant or other reactant (injector 18) upstream of the absorber, and at least during regeneration, passing the exhaust gases leaving the absorber through a three-way catalyst (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.