US3915657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stepped distributor plate fluidized bed reactor
Assignee: Hercules LLC
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Filing: 1974-05-21
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Granted: 1975-10-28
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Expires: 1994-05-21
Abstract
Abstract A fluidized bed reactor comprises a stepped distributor plate having at least two fluidizing surfaces, one spaced below the other. This distributor plate permits improved distribution of feed over the fluidizing surfaces of the plate. Feed position between fluidizing surfaces avoids pyrolysis of feed and subsequent clogging of feed tube.
Inventors
- 👤 Robert Staffin
- 👤 Richard E Tkac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:40
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/1818; B01J8/1827
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
324 words
IN A FLUIDIZED BED REACTOR HAVING IN COMBINATION A REACTOR BODY, A DISTRIBUTOR PLATE EXTENDING ACROSS SAID REACTOR BODY DEFINING A FLUIDIZING CHAMBER ABOVE SAID DISTRIBUTOR PLATE, A PLENIUM CHAMBER MEANS POSITIONED BELOW SAID DISTRIBUTOR PLATE IN SAID REACTOR BODY, AND A FEED INLET TO SAID FLUIDIZING CHAMBER, THE IMPROVEMENT COMPRISING A DISTRIBUTOR PLATE HAVING THREE FLUIDIZING SURFACES COMPRISING A FIRST FLAT FLUIDIZING SURFACE HAVING AN EXTERIOR EDGE, A CIRCULAR OPENING DEFINING AN INTERIOR EDGE AND A MULTIPLICITY OF ORIFICES SPACED ABOUT SAID FIRST FLUIDIZING SURFACE, THE EXTERIOR EDGE OF THE FIRST FLAT FLUIDIZING SURFACE BEING IN SEALING ENGAGEMENT WITH THE INTERIOR WALLS OF THE REACTOR BODY, A SECOND FLAT FLUIDIZING SURFACE SPACED BELOW SAID FIRST FLUIDIZING SURFACE HAVING THE SHAPE OF A CIRCULAR DISC HAVING A CIRCULAR OPENING DEFINING AN INTERIOR EDGE AND A MULTIPLICITY OF ORIFICES SPACED ABOUT SAID SECOND FLUIDIZING SURFACE, SAID SECOND FLUIDIZING SURFACE BEING IN REGIS TRATION WITH THE OPENING IN SAID FIRST FLUIDIZING SURFACE, A BASE FLUIDIZING SURFACE SPACED BELOW THE SECOND FLUIDIZING SURFACE HAVING A MULTIPLICITY OF ORIFICES SPACED ABOUT SAID SURFACE, SAID BASE FLUIDIZING SURFACE BEING IN REGISTRATION WITH THE OPENING IN THE SECOND FLUIDIZING SURFACE, A FIRST CONNECTING MEMBER DEPENDING FROM THE FIRST FLUIDIZING SURFACE, ONE END OF SAID FIRST CONNECTING MEMBER BEING IN SEALING ENGAGEMENT WITH THE INTERIOR EDGE OF THE FIRST FLUIDIZING SURFACE AND THE OPPOSITE, END THEREOF BEING IN SEALING ENGAGEMENT WITH THE EXTERIOR EDGE OF THE SECOND FLUIDIZING SURFACE, AND A SECOND CONNECTING MEMBER DEPENDING FROM THE SECOND FLUIDIZING SURFACE, ONE END OF SAID SECOND MEMBER BEING IN SEALING ENGAGEMENT WITH THE INTERIOR EDGE OF THE SECOND FLUIDIZING SURFACE AND THE OPPOSITE END THEREOF BEING IN SEALING ENGAGEMENT WITH THE EXTERIOR EDGE OF THE BASE FLUIDIZING SURFACE, SAID FIRST AND SECOND CONNECTING MEMBERS ENCOMPASSING THE VOLUME BETWEEN THE FIRST FLUIDIZING SURFACE AND THE BASE FLUIDIZING SURFACE AND A FEED INLET OPENING IN A CONNECTING MEMBER SPACED ABOVE THE BASE FLUIDIZING SURFACE.
Claim 2
Dependent Claim
324 words
IN A FLUIDIZED BED REACTOR HAVING IN COMBINATION A REACTOR BODY, A DISTRIBUTOR PLATE EXTENDING ACROSS SAID REACTOR BODY DEFINING A FLUIDIZING CHAMBER ABOVE SAID DISTRIBUTOR PLATE, A PLENIUM CHAMBER MEANS POSITIONED BELOW SAID DISTRIBUTOR PLATE IN SAID REACTOR BODY, AND A FEED INLET TO SAID FLUIDIZING CHAMBER, THE IMPROVEMENT COMPRISING A DISTRIBUTOR PLATE HAVING THREE FLUIDIZING SURFACES COMPRISING A FIRST FLAT FLUIDIZING SURFACE HAVING AN EXTERIOR EDGE, A CIRCULAR OPENING DEFINING AN INTERIOR EDGE AND A MULTIPLICITY OF ORIFICES SPACED ABOUT SAID FIRST FLUIDIZING SURFACE, THE EXTERIOR EDGE OF THE FIRST FLAT FLUIDIZING SURFACE BEING IN SEALING ENGAGEMENT WITH THE INTERIOR WALLS OF THE REACTOR BODY, A SECOND FLAT FLUIDIZING SURFACE SPACED BELOW SAID FIRST FLUIDIZING SURFACE HAVING THE SHAPE OF A CIRCULAR DISC HAVING A CIRCULAR OPENING DEFINING AN INTERIOR EDGE AND A MULTIPLICITY OF ORIFICES SPACED ABOUT SAID SECOND FLUIDIZING SURFACE, SAID SECOND FLUIDIZING SURFACE BEING IN REGIS TRATION WITH THE OPENING IN SAID FIRST FLUIDIZING SURFACE, A BASE FLUIDIZING SURFACE SPACED BELOW THE SECOND FLUIDIZING SURFACE HAVING A MULTIPLICITY OF ORIFICES SPACED ABOUT SAID SURFACE, SAID BASE FLUIDIZING SURFACE BEING IN REGISTRATION WITH THE OPENING IN THE SECOND FLUIDIZING SURFACE, A FIRST CONNECTING MEMBER DEPENDING FROM THE FIRST FLUIDIZING SURFACE, ONE END OF SAID FIRST CONNECTING MEMBER BEING IN SEALING ENGAGEMENT WITH THE INTERIOR EDGE OF THE FIRST FLUIDIZING SURFACE AND THE OPPOSITE, END THEREOF BEING IN SEALING ENGAGEMENT WITH THE EXTERIOR EDGE OF THE SECOND FLUIDIZING SURFACE, AND A SECOND CONNECTING MEMBER DEPENDING FROM THE SECOND FLUIDIZING SURFACE, ONE END OF SAID SECOND MEMBER BEING IN SEALING ENGAGEMENT WITH THE INTERIOR EDGE OF THE SECOND FLUIDIZING SURFACE AND THE OPPOSITE END THEREOF BEING IN SEALING ENGAGEMENT WITH THE EXTERIOR EDGE OF THE BASE FLUIDIZING SURFACE, SAID FIRST AND SECOND CONNECTING MEMBERS ENCOMPASSING THE VOLUME BETWEEN THE FIRST FLUIDIZING SURFACE AND THE BASE FLUIDIZING SURFACE AND A FEED INLET OPENING IN A CONNECTING MEMBER SPACED ABOVE THE BASE FLUIDIZING SURFACE.
Claim 3
Dependent Claim
221 words
In a fluidized bed reactor having in combination a reactor body, a distributor plate extending across said reactor body defining a fluidizing chamber above said distributor plate and a plenum chamber means positioned below said distributor plate in said reactor body and a feed inlet to said fluidizing chamber, the improvement comprising a distributor plate having at least two fluidizing surfaces spaced apart comprising a first fluidizing surface and a base fluidizing surface spaced below said first fluidizing surface, said first fluidizing surface having an exterior edge, at least one opening through said surface defining an interior edge, and a multiplicity of orifices spaced about said first fluidizing surface, the exterior edge of the first fluidizing surface being in sealing engagement with the interior walls of the reactor body, said base fluidizing surface having a multiplicity of orifices spaced about the base fluidizing surface, a connecting member depending from the first fluidizing surface, one end of said connecting member being in sealing engagement with the interior edge of the first fluidizing surface and the opposite end of said connecting member being in sealing engagement with the exterior edge of the base fluidizing surface, said connecting member encompassing the volume between the first and base fluidizing surfaces, and a feed inlet opening in the connecting member spaced above the base fluidizing surface.
Claim 4
Dependent Claim
221 words
In a fluidized bed reactor having in combination a reactor body, a distributor plate extending across said reactor body defining a fluidizing chamber above said distributor plate and a plenum chamber means positioned below said distributor plate in said reactor body and a feed inlet to said fluidizing chamber, the improvement comprising a distributor plate having at least two fluidizing surfaces spaced apart comprising a first fluidizing surface and a base fluidizing surface spaced below said first fluidizing surface, said first fluidizing surface having an exterior edge, at least one opening through said surface defining an interior edge, and a multiplicity of orifices spaced about said first fluidizing surface, the exterior edge of the first fluidizing surface being in sealing engagement with the interior walls of the reactor body, said base fluidizing surface having a multiplicity of orifices spaced about the base fluidizing surface, a connecting member depending from the first fluidizing surface, one end of said connecting member being in sealing engagement with the interior edge of the first fluidizing surface and the opposite end of said connecting member being in sealing engagement with the exterior edge of the base fluidizing surface, said connecting member encompassing the volume between the first and base fluidizing surfaces, and a feed inlet opening in the connecting member spaced above the base fluidizing surface.
Claim 5
Dependent Claim
22 words
The fluidized bed reactor of claim 2 in which the plenum chamber means comprises a separate plenum chamber for each fluidizing surface.
References Cited (Backward Citations)
US3370938A
Cited
US3772999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |