Device for reducing dibenzodioxin emissions, dibenzofuran emissions and particle emissions
US8171727B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Nov 18, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A transition metal-containing catalyzer is arranged on a particle filter installed in the exhaust gas line of an internal combustion engine and cannot be separated therefrom without being destroyed. To reduce emissions, at least one molecular sieve which retains polychlorinated dibenzodioxins and polychlorinated dibenzofurans is arranged between the transition metal-containing catalyzer and the exhaust gas outlet. Further, the input side of the molecular sieve and/or the output side of the catalyzer has an oxidation activity for hydrocarbons, polychlorinated dibenzodioxins and polychlorinated dibenzofurans upstream of the molecular sieve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.