US3672069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluidized-bed cooler and method of cooling particulate solid material
Assignee: GEA Group AG
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Filing: 1970-02-20
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Granted: 1972-06-27
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Expires: 1990-02-20
Abstract
Abstract A fluidized-bed heat exchanger in which a plurality of compartments are arranged side by side and are separated by respective baffles forming weirs or overflow arrangements whereby particle transfer is from one compartment to another and each compartment is fluidized by the introduction of carrier or fluidizing gases from below. Within the individual compartments, heat exchangers are provided and are connected to conduct a cooling fluid from compartment to compartment countercurrent to the direction of movement of the particles. The cooling means or heat exchangers may be tube coils connected in series.
Inventors
- 👤 Lothar Reh
- 👤 Werner Hans Schmidt
- 👤 Karlheinz Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:55
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/36; B01J8/1836; B01J8/26; F; F27; F27B; F27B3/00; F27B3/10; F27B3/24; F27D; F27D9/00; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16; F28D; F28D13/00; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00115; B01J2208/00141
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
151 words
A method of cooling particulate solid material, comprising the steps of: a. passing said solid material through a succession of cooling chambers in a thick layer only by overflow of the solid material from one column to the next while thermally isolating each chamber from the adjacent chamber; b. fluidizing the material in each of said chambers by passing a first cooling fluid upwardly therethrough while abstracting heat from said material and thereby heating said first cooling fluid; and c. passing a second cooling fluid through each of said chambers individually but in succession in a direction opposite the direction of movement of the solid material from chamber to chamber and, within each chamber, in counterflow to the movement of the solid material therethrough but in indirect heat exchange with the contents of said chambers to abstract further quantities of heat from said solid material and thereby heat said second fluid.
Claim 2
Independent Claim
151 words
A method of cooling particulate solid material, comprising the steps of: a. passing said solid material through a succession of cooling chambers in a thick layer only by overflow of the solid material from one column to the next while thermally isolating each chamber from the adjacent chamber; b. fluidizing the material in each of said chambers by passing a first cooling fluid upwardly therethrough while abstracting heat from said material and thereby heating said first cooling fluid; and c. passing a second cooling fluid through each of said chambers individually but in succession in a direction opposite the direction of movement of the solid material from chamber to chamber and, within each chamber, in counterflow to the movement of the solid material therethrough but in indirect heat exchange with the contents of said chambers to abstract further quantities of heat from said solid material and thereby heat said second fluid.
Claim 3
Dependent Claim
18 words
The method defined in claim 1, further comprising combining the heated first cooling fluids emerging from said chambers.
Claim 4
Dependent Claim
183 words
The method defined in claim 2 wherein said particulate solid material is the product of a fluidized-bed reactor, further comprising the steps of: d. fluidizing the solid material in an inlet chamber upstream of the first of said cooling chambers to settle contaminants from said solid material, the fluidization of the solid material in said inlet chamber being effected with a upward flow of said first cooling fluid, the heated first cooling fluid emerging from said inlet chamber being combined with the heated first cooling fluid emerging from said cooling chambers; e. passing the solid material from the last of said cooling chambers into a discharge chamber and fluidizing the solid material in said discharge chamber with said first cooling fluid while combining the heated first cooling fluid from said discharge chamber with the heated first cooling fluid from said cooling chambers; f. passing water through said discharge chamber in indirect heat exchange with the contents thereof and independently of the cooling of the remainder of said chambers; and g. feeding at least one of said first and second fluids to said reactor.
Claim 5
Dependent Claim
18 words
The method defined in claim 3 wherein said one of said fluids is chlorine gas, steam or air.
Claim 6
Dependent Claim
193 words
A fluidized-bed cooler for cooling particulate solid material, comprising: housing means defining a succession of cooling chambers for passing the solid material in a thick fluidized bed from chamber to chamber therealong, said housing means including thermally insulated walls of progressively diminishing height spaced along said housing means from an upstream end thereof toward a downstream end; means for passing a first cooling fluid upwardly through said chambers for cooling and fluidizing the solid material in said chambers while abstracting heat from said material and heating said first cooling fluid; multiple-convolution heat-exchanger means in and individual to each of said cooling chambers for passing a second cooling fluid through said chamber generally in counterflow to the movement of the solid material through said chambers but in indirect heat exchange with the contents of said chambers to abstract further quantities of heat from said solid material while heating said second fluid, and means for passing said second fluid into and out of each of said heat-exchanger means through the top of the respective chamber and for conducting said second fluid in series through the individual heat-exchanger means from said downstream toward said upstream end.
Claim 7
Dependent Claim
193 words
A fluidized-bed cooler for cooling particulate solid material, comprising: housing means defining a succession of cooling chambers for passing the solid material in a thick fluidized bed from chamber to chamber therealong, said housing means including thermally insulated walls of progressively diminishing height spaced along said housing means from an upstream end thereof toward a downstream end; means for passing a first cooling fluid upwardly through said chambers for cooling and fluidizing the solid material in said chambers while abstracting heat from said material and heating said first cooling fluid; multiple-convolution heat-exchanger means in and individual to each of said cooling chambers for passing a second cooling fluid through said chamber generally in counterflow to the movement of the solid material through said chambers but in indirect heat exchange with the contents of said chambers to abstract further quantities of heat from said solid material while heating said second fluid, and means for passing said second fluid into and out of each of said heat-exchanger means through the top of the respective chamber and for conducting said second fluid in series through the individual heat-exchanger means from said downstream toward said upstream end.
Claim 8
Dependent Claim
24 words
The cooler defined in claim 5 wherein said housing means includes means for collecting the heated first cooling fluid emerging from said cooling chamber.
Claim 9
Dependent Claim
52 words
The fluidized-bed cooler defined in claim 5, further comprising: means forming an inlet chamber upstream of the first of said cooling chambers for receiving said solid material and transferring it to said first cooling chamber; and means for fluidizing the solid material in said inlet chamber while permitting contaminants to settle therein.
Claim 10
Dependent Claim
64 words
The fluidized-bed cooler defined in claim 5, further comprising: means forming a discharge chamber downstream of the last of said cooling chambers and receiving the solid material therefrom; means for fluidizing the solid material in said discharge chamber; and further heat-exchanger means independent of the first-mentioned heat-exchanger means and traversed by a liquid coolant for abstracting further quantities of heat from said solid material.
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |