Patent US3745668A successfully refreshed from Google Patents.
US3745668A
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US
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Apparatus for interacting particulate material with gas
Assignee: Empresa Auxiliar de la Industria SA
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Filing: 1970-05-20
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Granted: 1973-07-17
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Expires: 1990-05-20
Abstract
Abstract Apparatus for interacting particulate material with gas in which particulate material is fed into one end of an elongated chamber and discharged from the opposite end thereof, while gas under pressure is fed through the perforated bottom wall of the chamber so that the particulate material fed into the chamber will form a fluidized bed of such material therein which flows from the one to the opposite end of the chamber. The space in the chamber immediately above the bed is divided by a plurality of transverse partition in successive zones preventing particulate material which is carried by the gas upwardly out of the fluidized bed to pass from one to another zone while permitting unobstructed flow of the material in the fluidized bed from one to the opposite end of the elongated chamber to assure thereby uniform treatment of the particulate material during its pasage through the chamber.
Inventors
- 👤 Ortuno A Vian
- 👤 Municio V Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:04
CPC Classifications
F; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/16; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/36; C; C01; C01B; C01B17/00; C01B17/02; C01B17/06; C01B17/48; C01B17/50; C01B17/52; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08; F27; F27B; F27B15/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
265 words
An apparatus for interacting particulate material with gases, particularly for the roasting of sulfides, comprising in combination a fluidizing chamber having an input end and an output end and defining between said ends a continuous flow passage free of flow obstructions for the continuous and unobstructed free flow of fluidized particulate material from said input end to said output end, said chamber further having a perforated bottom wall; means for blowing fluidizing gas into said chamber through said perforated bottom wall to create a fluidized bed of particulate material; feeding means for feeding particulate material into said input end of said fluidizing chamber; outlet means at said output end of said fluidizing chamber for discharging particulate material from said output end and for establishing the upper level of said fluidized bed at a level below the top of said chamber so as to divide the contents of said chamber into a lower fluidized-solids phase and an upper substantially gaseous phase; and a plurality of partitions located in the upper portion of said chamber spaced in direction from said input to said output end, said partitions having lower ends located in the immediate vicinity of said upper level of said fluidized bed, for dividing the portion of said chamber accommodating said upper substantially gaseous phase into a plurality of distinct zones to prevent particulate material escaping upwardly from the bed frOm passing from one zone to the next, while at the same time presenting no obstruction to the flow of the fluidized particulate material from said input end to said output end within the fluidized-solids phase.
Claim 2
Independent Claim
265 words
An apparatus for interacting particulate material with gases, particularly for the roasting of sulfides, comprising in combination a fluidizing chamber having an input end and an output end and defining between said ends a continuous flow passage free of flow obstructions for the continuous and unobstructed free flow of fluidized particulate material from said input end to said output end, said chamber further having a perforated bottom wall; means for blowing fluidizing gas into said chamber through said perforated bottom wall to create a fluidized bed of particulate material; feeding means for feeding particulate material into said input end of said fluidizing chamber; outlet means at said output end of said fluidizing chamber for discharging particulate material from said output end and for establishing the upper level of said fluidized bed at a level below the top of said chamber so as to divide the contents of said chamber into a lower fluidized-solids phase and an upper substantially gaseous phase; and a plurality of partitions located in the upper portion of said chamber spaced in direction from said input to said output end, said partitions having lower ends located in the immediate vicinity of said upper level of said fluidized bed, for dividing the portion of said chamber accommodating said upper substantially gaseous phase into a plurality of distinct zones to prevent particulate material escaping upwardly from the bed frOm passing from one zone to the next, while at the same time presenting no obstruction to the flow of the fluidized particulate material from said input end to said output end within the fluidized-solids phase.
Claim 3
Dependent Claim
27 words
An apparatus as defined in claim 1, wherein said fluidizing chamber is an elongated chamber and wherein said continuous flow passage is an elongated straight flow passage.
Claim 4
Dependent Claim
16 words
An apparatus as defined in claim 2, wherein said flow passage is of generally rectilinear configuration.
Claim 5
Dependent Claim
43 words
Apparatus as defined in claim 1, wherein said partitions are formed with openings permitting equalization of the gas pressure in the space above the bed in the plurality of zones to thereby maintain the level of said bed substantially constant over its length.
Claim 6
Dependent Claim
24 words
Apparatus as defined in claim 1, wherein the ratio of the length to the width of the means chamber means is at least 3:1.
Claim 7
Dependent Claim
21 words
Apparatus as defined in claim 1, wherein said perforated bottom wall is inclined downwardly toward said output end of said chamber.
Claim 8
Dependent Claim
17 words
Apparatus as defined in claim 1, wherein said chamber comprises walls constructed to act as heat conductors.
Claim 9
Dependent Claim
15 words
Apparatus as defined in claim 1, wherein said elongated chamber means has a serpentine configuration.
Claim 10
Dependent Claim
28 words
Apparatus as defined in claim 1 and including means for discharging gas and any fines carried by the gas to the upper end of each of said zones.
Claim 11
Dependent Claim
20 words
Apparatus as defined in claim 9, and including means for separating the fines carried by the gas from the latter.
Claim 12
Dependent Claim
12 words
Apparatus as defined in claim 10 wherein said separating means comprise cyclons.
Claim 13
Dependent Claim
22 words
Apparatus as defined in claim 10, and including means for returning said fines separated from the discharged gas to the fluidized bed.
Claim 14
Dependent Claim
18 words
Apparatus as defined in claim 9, and including means for recycling used gas back to the fluidized bed.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |