US3839803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cooling hot particulate material
Assignee: Fuller Co
•
Filing: 1973-01-30
•
Granted: 1974-10-08
•
Expires: 1993-01-30
Abstract
Abstract A method and apparatus for cooling hot particulate material such as cement clinker discharged from a furnace, such as a rotary kiln. A first heat exchanger of the type wherein cooling gas is passed upwardly through the material to cool the material and this gas is heated by the hot material and supplied to the kiln as preheated combustion air. The first heat exchanger is followed by a clinker breaker and a second heat exchanger which includes an arrangement for spraying the hot material with water. The spray cooler is followed by a third heat exchanger of the type wherein cooling air is passed upwardly through the material in direct contact with the material. The cooling air which flows through the third heat exchanger flows directly through the first heat exchanger. A material seal is provided between the second and third heat exchangers to prevent cooling air from passing through the second heat exchanger. A vent from the second heat exchanger is provided to exhaust steam produced when the water contacts the hot material. A control may be provided so that the amount of water sprayed onto the hot material at the second heat exchanger is responsive to the temperature of the material discharged from the third heat exchanger. As a modification, ambient air may be supplied directly to the hottest material discharged from the kiln for passage through the first heat exchanger.
Inventors
- 👤 C Dick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:09
CPC Classifications
F; F27; F27D; F27D17/00; F27D17/10; F27D17/17; F27D15/00; F27D15/02; F27D15/0206; F27D15/0213; F27D3/00; F27D2003/0034; F27D2003/0071; F27D9/00; F27D2009/007; F27D2009/0081; F27D2009/0083; F27D2009/0086; F27D2015/024; F27D2015/0246; F27D2015/0253
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
202 words
Apparatus for cooling hot particulate material discharged from a furnace and for supplying preheated combustion air to said furnace comprising: a first heat exchanger including means for supporting the material to be cooled and advancing matErial through the heat exchanger; conduit means for conducting material to be cooled from said furnace to said first heat exchanger; a second heat exchanger flow connected with said first heat exchanger for receiving material from said first heat exchanger and including means for supplying a cooling liquid for direct contact with the material to be cooled; a third heat exchanger flow connected with said second heat exchanger for receiving material from said second heat exchanger and including means for supporting the material to be cooled and advancing the material through the heat exchanger; means for supplying cooling sir to said third heat exchanger for sequential passage through the material in said third and first heat exchangers whereby cooling air passes through the coolest material first and the hottest material last and is heated by said material; means for conducting said heated air to said furnace; and means for substantially preventing cooling gas from passing through said material when said material is in said second heat exchanger.
Claim 2
Dependent Claim
202 words
Apparatus for cooling hot particulate material discharged from a furnace and for supplying preheated combustion air to said furnace comprising: a first heat exchanger including means for supporting the material to be cooled and advancing matErial through the heat exchanger; conduit means for conducting material to be cooled from said furnace to said first heat exchanger; a second heat exchanger flow connected with said first heat exchanger for receiving material from said first heat exchanger and including means for supplying a cooling liquid for direct contact with the material to be cooled; a third heat exchanger flow connected with said second heat exchanger for receiving material from said second heat exchanger and including means for supporting the material to be cooled and advancing the material through the heat exchanger; means for supplying cooling sir to said third heat exchanger for sequential passage through the material in said third and first heat exchangers whereby cooling air passes through the coolest material first and the hottest material last and is heated by said material; means for conducting said heated air to said furnace; and means for substantially preventing cooling gas from passing through said material when said material is in said second heat exchanger.
Claim 3
Dependent Claim
42 words
Apparatus for cooling hot particulate material according to claim 1 wherein said means for substantially preventing cooling gas from passing through said material when said material is in said second heat exchanger includes seal means between said second and third heat exchangers.
Claim 4
Dependent Claim
217 words
Apparatus for cooling hot particulate material and having an inlet for hot material and an outlet for cooled material, said apparatus comprising: a first heat exchanger flow connected with said inlet and including means for supporting a bed of material to be cooled; means for supplying cooling gas to said first heat exchanger for passage through the material to be cooled; a second heat exchanger for receiving material from said first heat exchanger; means for supplying a cooling liquid to said second heat exchanger for direct contact with said material; a third heat exchanger for receiving material from said second heat exchanger and discharging cooled material through said outlet and including means for supporting a bed of material to be cooled; means for supplying cooling gas to said third heat exchanger for passage through the material to be cooled; means for exhausting spent cooling gas from said first and third heat exchangers and from said cooling apparatus; and means for exhausting from said second heat exchanger and from said cooling apparatus substantially all of the vapor produced by the direct contact of said liquid with the material to be cooled, said vapor exhausting means including means for substantially isolating said second heat exchanger so that said vapor is exhausted independently of said exhaust of spent cooling gas.
Claim 5
Dependent Claim
217 words
Apparatus for cooling hot particulate material and having an inlet for hot material and an outlet for cooled material, said apparatus comprising: a first heat exchanger flow connected with said inlet and including means for supporting a bed of material to be cooled; means for supplying cooling gas to said first heat exchanger for passage through the material to be cooled; a second heat exchanger for receiving material from said first heat exchanger; means for supplying a cooling liquid to said second heat exchanger for direct contact with said material; a third heat exchanger for receiving material from said second heat exchanger and discharging cooled material through said outlet and including means for supporting a bed of material to be cooled; means for supplying cooling gas to said third heat exchanger for passage through the material to be cooled; means for exhausting spent cooling gas from said first and third heat exchangers and from said cooling apparatus; and means for exhausting from said second heat exchanger and from said cooling apparatus substantially all of the vapor produced by the direct contact of said liquid with the material to be cooled, said vapor exhausting means including means for substantially isolating said second heat exchanger so that said vapor is exhausted independently of said exhaust of spent cooling gas.
Claim 6
Dependent Claim
64 words
Apparatus for cooling hot particulate material according to claim 3 wherein said means for supporting a bed of material in said first heat exchanger includes means for advancing material from said inlet to said second heat exchanger and said means for supporting a bed of material in said second heat exchanger includes means for advancing material from said second heat exchanger to said outlet.
Claim 7
Dependent Claim
44 words
Apparatus for cooling hot particulate material according to claim 4 wherein said means for supplying cooling gas to said first heat exchanger includes means for conducting the cooling gas which passes through the material in said third heat exchanger to said first heat exchanger.
Claim 8
Dependent Claim
23 words
Apparatus for cooling hot particulate material according to claim 5 further comprising means for supplying ambient cooling gas to said first heat exchanger.
Claim 9
Dependent Claim
22 words
Apparatus for cooling hot particulate material according to claim 3 further comprising breaker means positioned between said first and second heat exchangers.
Claim 10
Dependent Claim
223 words
Apparatus for cooling hot particulate material discharged from a furnace and for supplying preheated combustion air to said furnace comprising: a first heat exchanger including means for supporting the material to be cooled and advancing material through the heat exchanger; conduit means for conducting material to be cooled from said furnace to said first heat exchanger; a second heat exchanger flow connected with said first heat exchanger for receiving material from said first heat exchanger and including means for supplying a cooling liquid for direct contact with the material to be cooled; a third heat exchanger flow connected with said second heat exchanger for receiving material from said second heat exchanger and including means for supporting the material to be cooled and advancing the material through the heat exchanger; means for supplying cooling air to said third heat exchanger for sequential passage through the material in said third and first heat exchangers whereby cooling air passes through the coolest material first and the hottest material last and is heated by said material; means for conducting said heated air to said furnace; means for exhausting from said second heat exchanger vapor produced by the first contact of the cooling liquid with the material to be cooled; and means for substantially preventing vapor produced in said second heat exchanger from being conducted to said furnace.
Claim 11
Dependent Claim
223 words
Apparatus for cooling hot particulate material discharged from a furnace and for supplying preheated combustion air to said furnace comprising: a first heat exchanger including means for supporting the material to be cooled and advancing material through the heat exchanger; conduit means for conducting material to be cooled from said furnace to said first heat exchanger; a second heat exchanger flow connected with said first heat exchanger for receiving material from said first heat exchanger and including means for supplying a cooling liquid for direct contact with the material to be cooled; a third heat exchanger flow connected with said second heat exchanger for receiving material from said second heat exchanger and including means for supporting the material to be cooled and advancing the material through the heat exchanger; means for supplying cooling air to said third heat exchanger for sequential passage through the material in said third and first heat exchangers whereby cooling air passes through the coolest material first and the hottest material last and is heated by said material; means for conducting said heated air to said furnace; means for exhausting from said second heat exchanger vapor produced by the first contact of the cooling liquid with the material to be cooled; and means for substantially preventing vapor produced in said second heat exchanger from being conducted to said furnace.
Claim 12
Dependent Claim
21 words
Apparatus for cooling hot particulate material according to claim 8 further comprising seal means between said second and third heat exchangers.
Claim 13
Dependent Claim
217 words
Apparatus for cooling hot particulate material discharged from a furnace and for supplying preheated combustion air to said furnace comprising: a first heat exchanger including means for supporting the material to be cooled and advancing material through the heat exchanger; conduit means for conducting material to be cooled from said furnace to said first heat exchanger; a second heat exchanger flow connected with said first heat exchanger for receiving material from said first heat exchanger and including means for supplying a cooling liquid for direct contact with the material to be cooled; a third heat exchanger flow connected with said second heat exchanger for receiving material from said second heat exchanger and including means for supporting the material to be cooled and advancing the material through the heat exchanger; means for supplying cooling air to said third heat exchanger for sequential passage through the material in said third and first heat exchangers whereby cooling air passes through the coolest material first and the hottest material last and is heated by said material; means for conducting said heated air to said furnace; breaker means positioned between two of said heat exchangers; means for controlling the amount of cooling liquid supplied to said second heat exchanger in response to the temperature of material discharged from said third heat exchanger.
Claim 14
Dependent Claim
217 words
Apparatus for cooling hot particulate material discharged from a furnace and for supplying preheated combustion air to said furnace comprising: a first heat exchanger including means for supporting the material to be cooled and advancing material through the heat exchanger; conduit means for conducting material to be cooled from said furnace to said first heat exchanger; a second heat exchanger flow connected with said first heat exchanger for receiving material from said first heat exchanger and including means for supplying a cooling liquid for direct contact with the material to be cooled; a third heat exchanger flow connected with said second heat exchanger for receiving material from said second heat exchanger and including means for supporting the material to be cooled and advancing the material through the heat exchanger; means for supplying cooling air to said third heat exchanger for sequential passage through the material in said third and first heat exchangers whereby cooling air passes through the coolest material first and the hottest material last and is heated by said material; means for conducting said heated air to said furnace; breaker means positioned between two of said heat exchangers; means for controlling the amount of cooling liquid supplied to said second heat exchanger in response to the temperature of material discharged from said third heat exchanger.
Claim 15
Dependent Claim
30 words
Apparatus for cooling hot particulate material according to claim 10 wherein said means for supplying cooling liquid to said second heat exchanger includes means for spraying water onto said material.
Claim 16
Dependent Claim
23 words
Apparatus for cooling hot particulate material according to claim 11 further comprising means for draining excess cooling liquid from said second heat exchanger.
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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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |