Patent US3849258A successfully refreshed from Google Patents.
US3849258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recuperative coke oven
Assignee: Bergwerksverband GmbH
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Filing: 1972-12-29
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Granted: 1974-11-19
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Expires: 1992-12-29
Abstract
Abstract A recuperative coke oven having chambers, each of which is located between two heating walls containing flues in groups communicating for heat exchange between a low calorie gas and/or air and the combustion gas. The flue groups are disposed across the width of the heating walls. The ascending flues are located adjacent the neighboring chambers, and each group of flues is associated with a recuperator containing cells for a low calorie gas and/or air and combustion gas. Flow control means which can be simultaneously but independently operated are provided for each cell.
Inventors
- 👤 C Flockenhaus
- 👤 H Echterhoff
- 👤 W Simonis
- 👤 K Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:22
CPC Classifications
C; C10; C10B; C10B5/00; C10B5/10; C10B5/20; C10B5/02; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
237 words
A recuperative coke oven comprising: a plurality of oven chambers; heating walls located on opposite sides of each of said oven chambers, each of said heating walls separating adjacent of said oven chambers; each of said heating walls having therein a plurality of flue groups, said flue groups being aligned in a row extending in the longitudinal direction of the respective heating wall; each of said flue groups comprising first, second and third separate flues arranged side-by-side across the width of the respective heating wall and in a direction transverse to said longitudinal direction thereof; said first and second flues of each of said flue groups being ascending flues aNd being located adjacent the neighboring of said oven chambers separated by the said respective heating wall, and said third flue being a descending flue positioned between said first and second flues; each of said flue groups having positioned therebelow a recuperator having cells in communication with said flues of said flue group; separate means connected to each of said cells of each said recuperator for supplying to said recuperator and to the respective said first and second flues a low calorie gas and/or air and for withdrawing from said recuperator and from the respective said third flue a combustion gas; and separate flow control means operably connected to each of said cells for independently controlling the flow through each of said separate means for supplying and withdrawing.
Claim 2
Dependent Claim
237 words
A recuperative coke oven comprising: a plurality of oven chambers; heating walls located on opposite sides of each of said oven chambers, each of said heating walls separating adjacent of said oven chambers; each of said heating walls having therein a plurality of flue groups, said flue groups being aligned in a row extending in the longitudinal direction of the respective heating wall; each of said flue groups comprising first, second and third separate flues arranged side-by-side across the width of the respective heating wall and in a direction transverse to said longitudinal direction thereof; said first and second flues of each of said flue groups being ascending flues aNd being located adjacent the neighboring of said oven chambers separated by the said respective heating wall, and said third flue being a descending flue positioned between said first and second flues; each of said flue groups having positioned therebelow a recuperator having cells in communication with said flues of said flue group; separate means connected to each of said cells of each said recuperator for supplying to said recuperator and to the respective said first and second flues a low calorie gas and/or air and for withdrawing from said recuperator and from the respective said third flue a combustion gas; and separate flow control means operably connected to each of said cells for independently controlling the flow through each of said separate means for supplying and withdrawing.
Claim 3
Dependent Claim
44 words
A recuperative coke oven as claimed in claim 1, wherein each of said heating walls further comprises a continuous load-bearing wall extending in said longitudinal direction of the respective said heating wall and centrally dividing said third flue of each of said flue groups.
Claim 4
Dependent Claim
56 words
A recuperative coke oven as claimed in claim 1, further comprising a separate means for supplying a high calorie gas to each of said first and second flues of each of said flue groups, and separate means for controlling the flow of high calorie gas into each of said separate means for supplying high calorie gas.
Claim 5
Dependent Claim
55 words
A recuperative coke oven as claimed in claim 1, wherein each of said first and second flues of each of said flue groups has therein separate air and/or low calorie gas shafts, and said cells of the respective recuperator include separate cells which are vertical continuations of said separate air and/or low calorie gas shafts.
Claim 6
Dependent Claim
29 words
A recuperative coke oven as claimed in claim 4, wherein said cells of said respective recuperator further include a cell which is a vertical continuation of said third flue.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |