Method for cleaning exhaust gas containing nitrogen oxides
US5645804A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1995 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2610/1453
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The method of cleaning an exhaust gas containing nitrogen oxides including disposing an exhaust gas cleaner comprising a heat-resistant, porous body, which may support a catalyst consisting essentially of (a) at least one of alkali metal elements; (b) at least one of elements selected from the group consisting of Cu, Co, Mn and V, (c) at least one of rare earth elements, in a flow path of the exhaust gas, spraying a liquid hydrocarbon into a stream of the exhaust gas on the upstream side of the exhaust gas cleaner, thereby causing atomized and gasified hydrocarbon to function as a reducing agent for reducing the nitrogen oxides in the exhaust gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.