Non-thermal plasma reactor for lower power consumption
US6482368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2000 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Dec 19, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/47
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dielectric barrier discharge non-thermal plasma reactor system and method for treating a combustion exhaust stream includes admitting an exhaust stream into a non-thermal plasma reactor having at least one segmented non-thermal plasma element including a plurality of individually energizable electrodes defining a plurality of corona volumes. In a preferred embodiment, the individually energizable electrodes are progressively smaller in size in the exhaust flow direction to provide optimum plasma volume variation. Individually energizable electrodes are selectively activated to effect variable corona volumes for treating an exhaust stream. Additional electrode segments may be activated such as during periods of high exhaust flow. The segmented elements may comprise a variety of shapes, such as C-shaped elements, I-shaped elements, planar elements, swept-shaped elements, inter-digitized elements prepared from comb-shaped elements. The system and method are particularly suitable for gas pretreatment and regeneration of a downstream diesel particulate filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.