US5725616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for combustion of hydrocarbons
Assignee: Kvaerner Technology and Research Ltd
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Filing: 1992-12-11
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Granted: 1998-03-10
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Expires: 2012-12-11
Abstract
Abstract In order to enrich natural gas or other hydrocarbon gases with hydrogen, thus reducing the carbon content and thereby achieving a reduction or elimination of the discharge of carbon dioxide during combustion of the gases, a pyrolytic process is conducted in the feed stream for the natural gases or hydrocarbon gases which are to be burned. The gas is passed through a reactor in which it is decomposed at least partially into a carbon constituent and a hydrogen constituent. The carbon constituent is removed to a desired level. Any remaining constituent together with the hydrogen constituent is conveyed to the combustion process while the removed carbon constituent is conveyed out of the process for separate application. The pyrolytic process can be carried out on the entire stream or only a partial stream.
Inventors
- 👤 Steinar Lynum
- 👤 Kjell Haugsten
- 👤 Ketil Hox
- 👤 Jan Hugdahl
- 👤 Nils Myklebust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:39
CPC Classifications
C; C10; C10K; C10K3/00; C01; C01B; C01B3/00; C01B3/02; C01B3/22; C01B3/24; C09; C09C; C09C1/00; C09C1/44; C09C1/48; B; B01; B01J; B01J19/00; B01J19/0006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A method of reducing the discharge of carbon dioxide from a process using the combustion of natural gas or hydrocarbon gas to generate energy, the steps comprising, prior to the process for combustion, feeding substantially all of the said gas to a decomposition reactor including a plasma torch to subject said gas to a pyrolytic process of the type that yields hydrogen and undecomposed gas and then removing the carbon from the hydrogen and the undecomposed gas so that the gas stream exiting the decomposition reactor is substantially hydrogen and undecomposed gas.
Claim 2
Independent Claim
92 words
A method of reducing the discharge of carbon dioxide from a process using the combustion of natural gas or hydrocarbon gas to generate energy, the steps comprising, prior to the process for combustion, feeding substantially all of the said gas to a decomposition reactor including a plasma torch to subject said gas to a pyrolytic process of the type that yields hydrogen and undecomposed gas and then removing the carbon from the hydrogen and the undecomposed gas so that the gas stream exiting the decomposition reactor is substantially hydrogen and undecomposed gas.
Claim 3
Dependent Claim
24 words
The method as claimed in claim 1 including the step of recycling hydrogen produced in the decomposition reactor to the decomposition reactor plasma torch.
Claim 4
Independent Claim
129 words
A method of reducing the discharge of carbon dioxide from a process using the combustion of one of natural gas and hydrocarbon gas to generate energy, the steps comprising, prior to the process for combustion, feeding the entire amount of the gas to the inlet of a decomposition reactor and through the said reactor to the outlet of the reactor, said decomposition reactor including a plasma torch and including the step of subjecting said gas to a pyrolytic process with said plasma torch to yield hydrogen, carbon and undecomposed gas and then removing said carbon from the hydrogen and undecomposed gas so that the gas stream exiting the outlet of aid decomposition reactor is substantially hydrogen fuel and feeding the hydrogen fuel and undecomposed gas to a combustion process.
Claim 5
Independent Claim
129 words
A method of reducing the discharge of carbon dioxide from a process using the combustion of one of natural gas and hydrocarbon gas to generate energy, the steps comprising, prior to the process for combustion, feeding the entire amount of the gas to the inlet of a decomposition reactor and through the said reactor to the outlet of the reactor, said decomposition reactor including a plasma torch and including the step of subjecting said gas to a pyrolytic process with said plasma torch to yield hydrogen, carbon and undecomposed gas and then removing said carbon from the hydrogen and undecomposed gas so that the gas stream exiting the outlet of aid decomposition reactor is substantially hydrogen fuel and feeding the hydrogen fuel and undecomposed gas to a combustion process.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-09 | 2001-09-08 | 2002-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-09 | 2005-09-08 | 2006-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-09 | 2009-09-08 | 2010-03-10 | $7700.00 | Window Closed / Lapsed |