Patent US3463928A successfully refreshed from Google Patents.
US6920836B2
Expired / Lapsed
US
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Regeneratively cooled synthesis gas generator
Assignee: Gas Technology Institute
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Filing: 2003-10-02
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Granted: 2005-07-26
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Expires: 2023-10-02
Abstract
Abstract A coolant liner for a carbonaceous fuel (coal or petcoke) gasification vessel including a ceramic composite panel and a method of cooling a vessel. The panel includes at least two layers of woven yarns of fibrous material and walls extending between the layers. Accordingly, the layers and the walls define coolant channels that extend in a warp direction. Moreover, one of the layers may be less than about 0.08 inches thick. Materials used to create the composite panel may include alumina, chromia, silicon carbide, and carbon. Additionally, the liners may be shaped in an arc or have coolant channels which vary in diameter in the warp direction. Additionally, the liner may abut a structural closeout of the vessel. The coolant liner provides a significantly more durable component than previously employed liners and is especially well suited to demanding service environments.
Inventors
- 👤 Kenneth M. Sprouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:15
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/72; C10J3/74; C10J3/76; F; F23; F23M; F23M5/00; F23M5/08; C10J2200/00; C10J2200/09; F23M2900/00; F23M2900/05004
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
78 words
A coolant liner for a carbonaceous fuel gasification vessel, comprising: a ceramic composite panel including at least two layers of woven yarns of fibrous material, the ceramic composite panel having a coefficient of thermal expansion approximately equal to a coefficient of thermal expansion of solidified slag produced within the gasification vessel; and wherein the layers of fibrous material include walls extending between the layers, the layers and the walls defining coolant channels that extend in a warp direction.
Claim 2
Dependent Claim
78 words
A coolant liner for a carbonaceous fuel gasification vessel, comprising: a ceramic composite panel including at least two layers of woven yarns of fibrous material, the ceramic composite panel having a coefficient of thermal expansion approximately equal to a coefficient of thermal expansion of solidified slag produced within the gasification vessel; and wherein the layers of fibrous material include walls extending between the layers, the layers and the walls defining coolant channels that extend in a warp direction.
Claim 3
Dependent Claim
25 words
The coolant liner according to claim 1 , wherein one of the at least two layers comprises a thickness of less than about 0.08 inches.
Claim 4
Dependent Claim
17 words
The coolant liner according to claim 1 , wherein the vessel further comprises a regeneratively cooled reactor.
Claim 5
Dependent Claim
19 words
The coolant liner according to claim 3 , wherein the fibrous material further comprises one of silica and chromia.
Claim 6
Dependent Claim
14 words
The coolant liner according to claim 1 , wherein the panel further comprises alumina.
Claim 7
Dependent Claim
37 words
The coolant liner according to claim 1 , wherein the panel is configured to withstand a change in temperature from an ambient temperature to approximately 2000° F. (1093° C.) in less than approximately 5 seconds without cracking.
Claim 8
Dependent Claim
19 words
The coolant liner according to claim 1 , wherein the panel further comprises one of silicon carbide and carbon.
Claim 9
Dependent Claim
33 words
The coolant liner according to claim 1 , further comprising a layer of the solidified slag formed by liquefied slag produced within the gasification vessel striking and adhering to the ceramic composite panel.
Claim 10
Dependent Claim
30 words
The coolant liner according to claim 1 , wherein the ceramic composite panel coefficient of thermal expansion equals between approximately 1×10 −6 inch/inch-degree F. and approximately 3×10 −6 inch/inch-degree F.
Claim 11
Dependent Claim
19 words
The coolant liner according to claim 1 , wherein a diameter of the channels varies in the warp direction.
Claim 12
Dependent Claim
15 words
The coolant liner according to claim 1 , wherein the panel abuts a metal closeout.
Claim 13
Dependent Claim
124 words
A carbonaceous fuel gasification vessel, comprising: a ceramic composite coolant liner including at least two layers of woven yarns of fibrous material and walls extending between the layers, the layers and the walls defining coolant channels that extend in a warp direction; a layer of solidified slag formed by liquefied slag produced within the gasification vessel striking and adhering to the ceramic composite coolant liner, wherein the ceramic composite coolant liner has a coefficient of thermal expansion approximately equal to a coefficient of thermal expansion of solidified slag so that the layer of solidified slag provides a protective barrier against spalling of the ceramic composite coolant liner; and a pressure retaining structure abutting the coolant liner for retaining a pressure developed in the vessel.
Claim 14
Dependent Claim
124 words
A carbonaceous fuel gasification vessel, comprising: a ceramic composite coolant liner including at least two layers of woven yarns of fibrous material and walls extending between the layers, the layers and the walls defining coolant channels that extend in a warp direction; a layer of solidified slag formed by liquefied slag produced within the gasification vessel striking and adhering to the ceramic composite coolant liner, wherein the ceramic composite coolant liner has a coefficient of thermal expansion approximately equal to a coefficient of thermal expansion of solidified slag so that the layer of solidified slag provides a protective barrier against spalling of the ceramic composite coolant liner; and a pressure retaining structure abutting the coolant liner for retaining a pressure developed in the vessel.
Claim 15
Dependent Claim
24 words
The vessel according to claim 12 , wherein one of the at least two layers has a thickness of less than about 0.08 inches.
Claim 16
Dependent Claim
13 words
The vessel according to claim 12 , further comprising a regeneratively cooled reactor.
Claim 17
Dependent Claim
19 words
The vessel according to claim 14 , wherein the fibrous material further comprises one of silica and silicon carbide.
Claim 18
Dependent Claim
14 words
The vessel according to claim 12 , wherein the coolant liner further comprises alumina.
Claim 19
Dependent Claim
18 words
The vessel according to claim 12 , wherein the coolant liner further comprises one of chromia and carbon.
Claim 20
Dependent Claim
37 words
The vessel according to claim 12 , wherein the coolant liner is configured to withstand a change in temperature from an ambient temperature to approximately 2000° F. (1093° C.) in less than approximately 5 seconds without cracking.
Claim 21
Dependent Claim
35 words
The vessel according to claim 12 , wherein the coolant liner is configured to withstand a change in temperature from an ambient temperature to approximately 2000° F. (1093° C.) in approximately 2 seconds without cracking.
Claim 22
Dependent Claim
30 words
The vessel according to claim 12 , wherein the ceramic composite coolant liner coefficient of thermal expansion equals between approximately 1×10 −6 inch/inch-degree F. and approximately 3×10 −6 inch/inch-degree F.
Claim 23
Dependent Claim
19 words
The vessel according to claim 12 , wherein a diameter of the coolant channels varies in the warp direction.
Claim 24
Independent Claim
131 words
A method of cooling a carbonaceous fuel gasification vessel, comprising: retaining a pressure in the vessel with a pressure retaining structure; abutting the pressure retaining structure with a ceramic composite coolant liner which includes at least two layers of woven yarns of fibrous material and walls extending between the layers, the layers and the walls defining coolant channels that extend in a warp direction; forming a layer of solidified slag on the ceramic composite coolant liner, wherein the ceramic composite coolant liner has a coefficient of thermal expansion approximately equal to a between approximately 1×10 −6 inch/inch-degree F. and approximately 3×10 −6 inch/inch-degree F. so that the layer of solidified slag provides a protective barrier against erosion of the ceramic composite coolant liner; and flowing a coolant through the coolant channels.
Claim 25
Independent Claim
131 words
A method of cooling a carbonaceous fuel gasification vessel, comprising: retaining a pressure in the vessel with a pressure retaining structure; abutting the pressure retaining structure with a ceramic composite coolant liner which includes at least two layers of woven yarns of fibrous material and walls extending between the layers, the layers and the walls defining coolant channels that extend in a warp direction; forming a layer of solidified slag on the ceramic composite coolant liner, wherein the ceramic composite coolant liner has a coefficient of thermal expansion approximately equal to a between approximately 1×10 −6 inch/inch-degree F. and approximately 3×10 −6 inch/inch-degree F. so that the layer of solidified slag provides a protective barrier against erosion of the ceramic composite coolant liner; and flowing a coolant through the coolant channels.
Claim 26
Dependent Claim
27 words
The method according to claim 22 , further comprising limiting the thickness of one of the at least two layers to less than about 0.08 inches thick.
Claim 27
Dependent Claim
27 words
The method according to claim 22 , further comprising reacting the coolant with the contents of the vessel after the coolant has flowed through the coolant channels.
Claim 28
Dependent Claim
39 words
The method according to claim 22 , wherein the ceramic composite coolant liner is configured to withstand a change in temperature from an ambient temperature to approximately 2000° F. (1093° C.) in less than approximately 5 seconds without cracking.
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) | 2008-07-25 | 2009-01-24 | 2009-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-07-25 | 2013-01-24 | 2013-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-07-25 | 2017-01-24 | 2017-07-26 | $7700.00 | Window Closed / Lapsed |