US5746984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system with emissions storage device and plasma reactor
Assignee: Low Emissions Technologies Research and Development Partnership
•
Filing: 1996-06-28
•
Granted: 1998-05-05
•
Expires: 2016-06-28
Abstract
Abstract An exhaust system for a combustion system, comprising a storage device for collecting NO x , hydrocarbon, or particulate emissions, or mixture of these emissions, and a plasma reactor for destroying the collected emissions is described. After the emission is collected in by the storage device for a period of time, the emission is then destroyed in a non-thermal plasma generated by the plasma reactor. With respect to the direction of flow of the exhaust stream, the storage device must be located before the terminus of the plasma reactor, and it may be located wholly before, overlap with, or be contained within the plasma reactor.
Inventors
- 👤 John W. Hoard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:39
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/32; B01D53/323; B01D53/34; B01D53/92; B01D53/94; B01D53/9445; B01D53/9454; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088; F; F01; F01N; F01N13/00; F01N13/009; F01N3/00; F01N3/08; F01N3/0807; F01N3/0828; F01N3/0842; F01N3/0892; B01D2257/00; B01D2257/40; B01D2257/404; B01D2258/00; B01D2258/01; B01D2258/012; B01D2258/014; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40088; B01D2259/45; B01D2259/4525; B01J2219/00; B01J2219/08; B01J2219/0894; F01N2240/00; F01N2240/28; F01N2250/00; F01N2250/12; F02; F02B; F02B1/00; F02B1/02; F02B1/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
An exhaust system for a combustion process, comprising: (a) a storage device with means for collecting from an exhaust stream at least one member selected from the group consisting of hydrocarbon, particulate, and NO x emissions, and mixtures thereof; (b) a plasma reactor capable of generating a non-thermal plasma; and (c) means for alternating between collection of the emissions in the storage device and destruction of the collected emissions in the plasma reactor, wherein, with respect to the direction of flow of the exhaust stream, the storage device is located before the terminus of the plasma reactor.
Claim 2
Dependent Claim
97 words
An exhaust system for a combustion process, comprising: (a) a storage device with means for collecting from an exhaust stream at least one member selected from the group consisting of hydrocarbon, particulate, and NO x emissions, and mixtures thereof; (b) a plasma reactor capable of generating a non-thermal plasma; and (c) means for alternating between collection of the emissions in the storage device and destruction of the collected emissions in the plasma reactor, wherein, with respect to the direction of flow of the exhaust stream, the storage device is located before the terminus of the plasma reactor.
Claim 3
Dependent Claim
17 words
An exhaust system according to claim 1, wherein the storage device is located before the plasma reactor.
Claim 4
Dependent Claim
17 words
An exhaust system according to claim 1, wherein the storage device is located within the plasma reactor.
Claim 5
Dependent Claim
18 words
An exhaust system according to claim 1, wherein the plasma reactor is an electrified packed bed plasma reactor.
Claim 6
Dependent Claim
19 words
An exhaust system according to claim 4, wherein the storage device comprises the packing material of the plasma reactor.
Claim 7
Dependent Claim
18 words
An exhaust system according to claim 5, wherein the packing material comprises means for adsorbing NO x .
Claim 8
Dependent Claim
21 words
An exhaust system according to claim 1, wherein the storage device comprises means for collecting NO x in an oxidizing atmosphere.
Claim 9
Dependent Claim
17 words
An exhaust system according to claim 1, further comprising a catalytic converter downstream of the plasma reactor.
Claim 10
Dependent Claim
16 words
An exhaust system according to claim 1, further comprising an engine upstream of the storage device.
Claim 11
Dependent Claim
22 words
An exhaust system according to claim 9, wherein the engine is selected from the group consisting of gasoline engines and diesel engines.
References Cited (Backward Citations)
EP0366876A1
Cited
US5458748A
Cited
US5505909A
Cited
JPH05115746A
Cited
JPH0615143A
Cited
JPH06106025A
Cited
JPH06163210A
Cited
JPH06178914A
Cited
JPH06251821A
Cited
JPH06269635A
Cited
US5401372A
Cited
JPH07316084A
Cited
US5492678A
Cited
JPH07116460A
Cited
US5456807A
Cited
US5534659A
Cited
US5490973A
Cited
US5603893A
Cited
US5609736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-04 | 2001-11-03 | 2002-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-04 | 2005-11-03 | 2006-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-04 | 2009-11-03 | 2010-05-05 | $7700.00 | Window Closed / Lapsed |