Filter for treating a particle-carrying gaseous stream
US4416674A · kind A · utility
22Cited by
12References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1982 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Mar 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Filter for treating a gas such as the exhaust gas stream from a diesel engine, which exhaust gas often conveys carbon particles into the atmosphere. The treating filter comprises a casing holding a plurality of serially arranged filter beds. The latter are comprised of monolith ceramic discs, and are maintained in spaced apart relationship by spacer rings to define a turbulation chamber between adjacent beds. Said beds are provided with an oxidation catalyst to promote incineration of the retained particles. The beds further serve to reinforce and support a non-rigid filtering media contained within the respective chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.