US3897546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cooling or heating fluidized beds
Assignee: Czech Academy of Sciences
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Filing: 1971-10-19
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Granted: 1975-07-29
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Expires: 1991-10-19
Abstract
Abstract A method for adjusting and controlling the temperature in chemical reaction, that is, of cooling or heating fluidized beds wherein the fluidized bed is demixed into two or more sectional fluidized beds having different rates of longitudinal particle mixing, by dividing a flow of fluidizing gas and/or liquid into two or more flows to be supplied to different levels of the fluidized bed, the rate of cooling or heating being modified by changing the throughflow of the fluidizing gas and/or liquid within said individual flows. One or more of the sectional fluidized beds are associated with heat exchangers.
Inventors
- 👤 Jaroslav Beranek
- 👤 Milos Kaspar
- 👤 Vladimir Bazant
- 👤 Antonin Chladek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:28
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/48; C01B17/50; C01B17/52; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1836; F; F28; F28D; F28D13/00; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00106; B01J2208/00115; B01J2208/00141; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
169 words
A METHOD FOR ADJUSTING AND CONTROLLING THE TEMPERATURE IN CHEMICAL REACTORS EMPLOYING A SINGLE FLUIDIZED BED CONTAINING PARTICLES OF VARYING SIZE COMPRISING THE STEPS OF A. SEPERATING THE FLUIDIZED BED INTO AT LEAST TWO SUBBEDS SUPERIMPOSED ONE ON THE OTHER, EACH HAVING DIFFERENT PHYSICAL LONGITUFINAL PARTICLE MIXES THAN THE OTHER, B. INTRODUCING A FLUID MEDIA IN TWO SECTIONAL STREAMS TO EACH OF SAID SUBBEDS, SAID FLUID MEDIA STREAMS EXTENDING FROM THE BOTTOM OF SAID SLUIDIZED BED UPWARDLY INTO THEIR RESPECTIVE ASSOCIATED SUBBEDS IN DIRECT CONTACT WITH THE PARTICLES, C. CONTINUING THE FLOW OF THE FLUID MEDIA TO SAID SEPARATED SUBBEDS OF THE FLUIDIZED BED DURING THE CHEMICAL REACTION, D. LOCATING A FLUID MEDIA EXCHANGER AT LEAST IN THE LOWERMOST OF SAID SUBBEDS OF THE SEPARATE FLUIDIZED BED IN INDIRECT CONTENT WITH SAID PARTICLES IN SAID BED, AND E. VARYING THE RELATIVE RATE OF FLOW OF THE FLUID MEDIA THROUGH EACH OF THE SEPARATED SUBBEDS OF THE FLUIDIZED BED TO VARY THE PHYSICAL LONGITUDINAL PARTICLE MIXING INTENSITIES IN EACH PART.
Claim 2
Independent Claim
169 words
A METHOD FOR ADJUSTING AND CONTROLLING THE TEMPERATURE IN CHEMICAL REACTORS EMPLOYING A SINGLE FLUIDIZED BED CONTAINING PARTICLES OF VARYING SIZE COMPRISING THE STEPS OF A. SEPERATING THE FLUIDIZED BED INTO AT LEAST TWO SUBBEDS SUPERIMPOSED ONE ON THE OTHER, EACH HAVING DIFFERENT PHYSICAL LONGITUFINAL PARTICLE MIXES THAN THE OTHER, B. INTRODUCING A FLUID MEDIA IN TWO SECTIONAL STREAMS TO EACH OF SAID SUBBEDS, SAID FLUID MEDIA STREAMS EXTENDING FROM THE BOTTOM OF SAID SLUIDIZED BED UPWARDLY INTO THEIR RESPECTIVE ASSOCIATED SUBBEDS IN DIRECT CONTACT WITH THE PARTICLES, C. CONTINUING THE FLOW OF THE FLUID MEDIA TO SAID SEPARATED SUBBEDS OF THE FLUIDIZED BED DURING THE CHEMICAL REACTION, D. LOCATING A FLUID MEDIA EXCHANGER AT LEAST IN THE LOWERMOST OF SAID SUBBEDS OF THE SEPARATE FLUIDIZED BED IN INDIRECT CONTENT WITH SAID PARTICLES IN SAID BED, AND E. VARYING THE RELATIVE RATE OF FLOW OF THE FLUID MEDIA THROUGH EACH OF THE SEPARATED SUBBEDS OF THE FLUIDIZED BED TO VARY THE PHYSICAL LONGITUDINAL PARTICLE MIXING INTENSITIES IN EACH PART.
Claim 3
Dependent Claim
28 words
The method as defined in claim 1 wherein the heat exchanging method is flowed through the lower most subbed of the separated fluidized bed in indirect contact therewith.
Claim 4
Dependent Claim
37 words
The method as defined in claim 1 including the step of varying the temperature of the separated subbeds of the fluidized bed by periodically increasing and decreasing the rate of flow of fluid media through separated subbeds.
Claim 5
Dependent Claim
13 words
The method as defined in claim 1 wherein said fluid media is gas.
Claim 6
Dependent Claim
13 words
The method as defined in claim 1 wherein said fluid media is liquid.
Claim 7
Dependent Claim
42 words
The method as defined in claim 1 including the step of vertically subdividing at least the part of the separated fluidized bed containing the immersed indirect heat exchanger into horizontally arranged sections each having different flow rates of the fluid media therethrough.
References Cited (Backward Citations)
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Cited
US2674612A
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US2621118A
Cited
US2729598A
Cited
US2683685A
Cited
US3702819A
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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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |