US3705620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage material cooler
Assignee: Claudius Peters AG
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Filing: 1971-02-23
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Granted: 1972-12-12
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Expires: 1991-02-23
Abstract
Abstract A two-stage material cooler particularly adapted for cooling burning or burned material. The cooler includes a first stage direct cooler such as a grate cooler wherein air is blown through the material as it is discharged from a furnace such as a rotary kiln. The air heated by the hot material is returned as combustion air to the furnace. The partially cooled material is passed through a material breaker and supplied to an indirect cooler for further cooling. The indirect cooler includes a plurality of bins each having a plurality of spaced apart tubes therein. Cooling fluid such as air or water is passed through these tubes. The material to be cooled is placed in the top of these bins and passes downwardly therethrough to be discharged from the bottom of the bins. As material passes through the bins, it contacts the cooling tubes and is thereby cooled.
Inventors
- 👤 Karl-Heinz Kayatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:44
CPC Classifications
F; F27; F27D; F27D15/00; F27D15/02; F27D15/0286; F27D3/00; F27D2003/0034; F27D2003/0065; F27D9/00; F27D2009/007; F27D2009/0072; F27D2009/0078; F27D15/0206; F27D15/0213; F27D2015/0246; F27D2015/0253
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
141 words
A two-stage cooler for hot material discharged from a furnace comprising: a first cooling apparatus including means for receiving hot material from the furnace, means for moving the material through the first cooling apparatus, means for passing cooling air through the hot material, and means for conducting the cooling air heated by the hot material to the furnace; a second cooling apparatus including at least one conduit means for receiving material to be cooled and discharging cooled material, a plurality of spaced apart tubes mounted in said conduit means transverse to the flow path of material through said conduit means, and means for supplying cooling fluid to said tubes whereby material to be cooled comes into heat exchange relation with said cooling tubes and is thereby cooled; and means for conducting material from said first cooling apparatus to said second apparatus.
Claim 2
Dependent Claim
141 words
A two-stage cooler for hot material discharged from a furnace comprising: a first cooling apparatus including means for receiving hot material from the furnace, means for moving the material through the first cooling apparatus, means for passing cooling air through the hot material, and means for conducting the cooling air heated by the hot material to the furnace; a second cooling apparatus including at least one conduit means for receiving material to be cooled and discharging cooled material, a plurality of spaced apart tubes mounted in said conduit means transverse to the flow path of material through said conduit means, and means for supplying cooling fluid to said tubes whereby material to be cooled comes into heat exchange relation with said cooling tubes and is thereby cooled; and means for conducting material from said first cooling apparatus to said second apparatus.
Claim 3
Dependent Claim
46 words
The cooler of claim 1 wherein the conduit meanS of said second cooling apparatus is substantially vertical and material to be cooled is supplied to the top of said conduit means and discharged from the bottom thereof, and material flows through said conduit means by gravity.
Claim 4
Dependent Claim
26 words
The cooler of claim 2 wherein said second cooling apparatus further includes means for controlling the length of time material is retained in said conduit means.
Claim 5
Dependent Claim
31 words
The cooler of claim 1 further comprising breaker means positioned at the discharge end of said first cooling apparatus for reducing the size of material supplied to said second cooling apparatus.
Claim 6
Dependent Claim
49 words
The cooler of claim 4 further comprising screen means mounted in said means for conducting material from said first cooling apparatus to said second cooling apparatus for controlling the maximum size of material supplied to the second cooling stage, and means for returning oversize material to said breaker means.
Claim 7
Dependent Claim
24 words
The cooler of claim 5 wherein said means for conducting material from said first cooling apparatus to said second cooling apparatus includes an elevator.
Claim 8
Dependent Claim
41 words
The cooler of claim 4 wherein said first cooling apparatus includes screen means positioned before said breaker means and by-pass means for conducting small size material around said breaker means to said means for conducting material to said second cooling apparatus.
Claim 9
Dependent Claim
19 words
The cooler of claim 1 wherein the tubes of said second cooling apparatus are substantially rhombic in cross section.
Claim 10
Dependent Claim
19 words
The cooler of claim 8 wherein the tubes of said second cooling apparatus are staggered in said conduit means.
Claim 11
Dependent Claim
32 words
The cooler of claim 9 wherein the means for supplying cooling fluid to the tubes of the second cooling apparatus includes at least one fan for forcing gaseous fluid through said tubes.
Claim 12
Dependent Claim
28 words
The cooler of claim 9 wherein the means for supplying cooling fluid to the tubes of the second cooling apparatus includes means for supplying liquid to the tubes.
Claim 13
Dependent Claim
70 words
The cooler of claim 1 wherein there are a plurality of conduit means arranged in series in the second cooling apparatus, and conveyor means for supplying material to be cooled to each of said conduit means, the conduit means closest to said means for conducting material from said first cooling apparatus to said second cooling apparatus adapted to be filled with material before the other conduit means receive any material.
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |