Patent US6712602B2 successfully refreshed from Google Patents.
US6712602B2
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Hybrid type high pressure combustion burner employing catalyst and CST combustion with staged mixing system
Assignee: Korea Institute of Energy Research
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Filing: 2002-08-01
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Granted: 2004-03-30
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Expires: 2022-08-01
Abstract
Abstract Disclosed is a hybrid high pressure catalytic combustion burner employing catalysts and CST combustion with staged mixing systems, in which a primary combustion gas containing reacted gas of a primary gas mixture, which is formed via catalytic combustion, is subject to a secondary mixing with the primary gas mixture containing fuel and high temperature air, completing stable high temperature CST combustion at ultra lean conditions, thereby achieving high temperature combustion reducing formation of NO x .
Inventors
- 👤 Sung-Kyu Kang
- 👤 Nam-Jo Joung
- 👤 Yong-Seok Seo
- 👤 Sung-Jun Cho
- 👤 In-Soo You
- 👤 Hyun-Dong Shin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:18
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/02; F23C; F23C13/00; F23C13/02; F23C2900/00; F23C2900/13002; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
94 words
A hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion, comprising: a primary gas mixing portion for homogenous mixing of preheated air with fuel; a catalytic combustion portion for combusting the gas mixture prepared in the primary gas mixing portion via surface reaction; a secondary gas mixing portion for mixing of reacted gas via surface reaction in the catalytic combustion portion with unreacted gas which is not subject to surface reaction; and a CST combustion portion for burning the gas mixture prepared in the secondary gas mixing portion.
Claim 2
Dependent Claim
94 words
A hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion, comprising: a primary gas mixing portion for homogenous mixing of preheated air with fuel; a catalytic combustion portion for combusting the gas mixture prepared in the primary gas mixing portion via surface reaction; a secondary gas mixing portion for mixing of reacted gas via surface reaction in the catalytic combustion portion with unreacted gas which is not subject to surface reaction; and a CST combustion portion for burning the gas mixture prepared in the secondary gas mixing portion.
Claim 3
Dependent Claim
77 words
The hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion as set forth in claim 1 , wherein the primary gas mixing portion includes a gas burner or an electric heater for preheating air supplied from a nozzle, a fuel injection nozzle for injecting a fuel, a primary mixer for homogenous mixing of the preheated air with the fuel, and a honeycomb plate for regulating the flow of the mixed gas.
Claim 4
Dependent Claim
35 words
The hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion as set forth in claim 2 , wherein the primary mixer is a swirler or a linear type mixer.
Claim 5
Dependent Claim
88 words
The hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion as set forth in claim 1 , wherein the catalytic combustion portion includes: a catalytic bed which is composed of 4 layers, each layer comprising a flat plate and a corrugated sheet, the flat plate and the corrugated sheet being coated with catalysts, and the 4 layers being wound to form a snail-shaped structure; a plurality of supporters for supporting the catalytic reactor; and an annular part being supported by the supporters.
Claim 6
Dependent Claim
40 words
The hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion as set forth in claim 4 , wherein the catalytic bed has one layer composed of a sheet uncoated with catalysts on the surface.
Claim 7
Dependent Claim
39 words
The hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion as set forth in claim 1 , wherein the secondary gas mixing portion is mounted with a secondary mixer of a bent structure.
Claim 8
Dependent Claim
47 words
The hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion as set forth in claim 6 , wherein the secondary mixer has an axial angle of a vane and a swirl angle β of the vane of 30 to 70°, respectively.
Claim 9
Dependent Claim
36 words
The hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion as set forth in claim 1 , wherein the CST combustion portion includes a burner tile of horn-shaped combustion chamber.
Claim 10
Dependent Claim
35 words
The hybrid high pressure catalytic combustion burner with staged mixing systems employing catalysts and CST combustion as set forth in claim 8 , wherein the combustion chamber has a spreading angle of 10 to 45°.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-03-30 | 2007-09-29 | 2008-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-03-30 | 2011-09-29 | 2012-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-03-30 | 2015-09-29 | 2016-03-30 | $7700.00 | Window Closed / Lapsed |