Exhaust gas purifying apparatus and method of using the same
US7181903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2004 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | May 14, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2570/22
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to an exhaust gas purifying apparatus comprising a plasma reactor containing at least one of a H2O adsorbent and a HC adsorbent; and a NOx adsorbent located downstream of said plasma reactor. Further, the present invention relates to an exhaust gas purifying apparatus comprising a plasma reactor containing at least one of a H2O adsorbent and a HC adsorbent, and a NOx adsorbent. Still further, the present invention relates to a method using the present apparatus. According to the present apparatus, by generating plasma in the plasma reactor, H2O trapped on the H2O adsorbent is activated to be a strong oxidant such as OH radical and O radical, and HC trapped on the HC adsorbent is activated to be radicals, lower HCs, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.