Patent US4753177A successfully refreshed from Google Patents.
US4753177A
Expired / Lapsed
US
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Fluidized bed reactor
Assignee: A AHLSTROM Corp KARHULA FINLAND A CORP OF FINLAND
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Filing: 1987-04-30
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Granted: 1988-06-28
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Expires: 2007-04-30
Abstract
Abstract A fluidized bed reactor (1) comprising a reactor chamber (4) having a gas distributor plate (5) for feeding primary air, and a space above said distributor plate (5) is divided into compartments (6) by means of partition walls (7) having discharge openings (9) for feeding secondary air to the circulating bed.
Inventors
- 👤 Folke Engstrom
- 👤 Juhani Isaksson
- 👤 Reijo Kuivalainen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:07
CPC Classifications
F; F23; F23C; F23C10/00; F23C10/18; B; B01; B01J; B01J8/00; B01J8/18; B01J8/1818; F23C10/005; F23C10/02; F23C10/04; F23C10/08; F23C10/10; F23C10/20; F23L; F23L9/00; F23C2206/00; F23C2206/10; F23C2206/101
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
104 words
A fluidized bed reactor comprising: a reactor chamber; a gas distributor plate disposed in said reactor chamber; means for supplying primary gas to the reactor chamber through said gas distributor plate; and means for providing secondary gas to said reactor chamber above said distributor plate, said means comprising partition wall means which divide the space immediately above the gas distributor plate into compartments, and means defining discharge openings in said partition walls for the supply of secondary gas through the discharge openings into the compartments, said partition walls and the flow of secondary gas through the openings preventing particles from entering said partition means.
Claim 2
Dependent Claim
104 words
A fluidized bed reactor comprising: a reactor chamber; a gas distributor plate disposed in said reactor chamber; means for supplying primary gas to the reactor chamber through said gas distributor plate; and means for providing secondary gas to said reactor chamber above said distributor plate, said means comprising partition wall means which divide the space immediately above the gas distributor plate into compartments, and means defining discharge openings in said partition walls for the supply of secondary gas through the discharge openings into the compartments, said partition walls and the flow of secondary gas through the openings preventing particles from entering said partition means.
Claim 3
Dependent Claim
26 words
A reactor as recited in claim 1 wherein said partition walls extend to a height between 0.6-4 meters above the surface of said gas distributor plate.
Claim 4
Dependent Claim
26 words
A reactor as recited in claim 1 further comprising means for separately regulating the feed of secondary gas into different compartments defined by said partition walls.
Claim 5
Dependent Claim
40 words
A reactor as recited in claim 1 wherein said means for defining discharge openings in said partition walls define discharge openings at different heights in said partition walls so that the secondary gas is relatively uniformly distributed in said compartments.
Claim 6
Dependent Claim
47 words
A reactor as recited in claim 1 wherein said means defining said discharge openings in said discharge walls define openings in said openings in said partition walls at selected heights that open into each compartment defined by the partition wall in which said discharge openings are defined.
Claim 7
Independent Claim
93 words
A method of supplying primary and secondary gas to a fluidized bed reactor which has a reactor chamber having a gas distributor plate disposed in the chamber, comprising the steps of: (a) feeding primary gas into the reactor chamber through the gas distributor plate; (b) separating the space above the gas distributor plate into a plurality of compartments defined by generally vertical walls; (c) supplying secondary gas into each of the compartments at different heights along the vertical walls defining the compartments, the gas initially flowing into the compartments with a horizontal vector.
Claim 8
Independent Claim
93 words
A method of supplying primary and secondary gas to a fluidized bed reactor which has a reactor chamber having a gas distributor plate disposed in the chamber, comprising the steps of: (a) feeding primary gas into the reactor chamber through the gas distributor plate; (b) separating the space above the gas distributor plate into a plurality of compartments defined by generally vertical walls; (c) supplying secondary gas into each of the compartments at different heights along the vertical walls defining the compartments, the gas initially flowing into the compartments with a horizontal vector.
Claim 9
Dependent Claim
27 words
A method as recited in claim 6 wherein step (b) is practiced by providing vertical walls defining the compartments extending to a height of between 0.6-4 meters.
Claim 10
Dependent Claim
27 words
A method as recited in claim 6 wherein step (b) is practiced by providing vertical walls defining the compartments extending to a height of between 1.5-2.5 meters.
Claim 11
Dependent Claim
23 words
A method as recited in claim 6 comprising the further step of separately regulating the feed of secondary gas into the differential compartments.
Claim 12
Dependent Claim
103 words
A fluidized bed reactor comprising: a reactor chamber; a gas distributor plate disposed in said reactor chamber; means for supplying primary gas to the reactor chamber through said gas distributor plate; and means for providing secondary gas to said reactor chamber above said distributor plate, said means comprising partition wall means which divide the space immediately above the gas distributor plate into compartments, and means defining discharge openings in said partition walls for the supply of secondary gas through the discharge openings into the compartments, said partition walls extending to a height between 0.6-4 meters above the surface of said gas distributor plate.
Claim 13
Dependent Claim
103 words
A fluidized bed reactor comprising: a reactor chamber; a gas distributor plate disposed in said reactor chamber; means for supplying primary gas to the reactor chamber through said gas distributor plate; and means for providing secondary gas to said reactor chamber above said distributor plate, said means comprising partition wall means which divide the space immediately above the gas distributor plate into compartments, and means defining discharge openings in said partition walls for the supply of secondary gas through the discharge openings into the compartments, said partition walls extending to a height between 0.6-4 meters above the surface of said gas distributor plate.
Claim 14
Dependent Claim
27 words
A reactor as recited in claim 10 wherein said partition walls extend to a height of between 1.5-2.5 meters above the surface of said gas distributor plate.
Claim 15
Dependent Claim
40 words
A reactor as recited in claim 11 wherein said means for defining discharge openings in said partition walls define discharge openings at different heights in said partition walls so that the secondary gas is relatively uniformly distributed in said compartments.
Claim 16
Dependent Claim
26 words
A reactor as recited in claim 12 further comprising means for separately regulating the feed of secondary gas into different compartments defined by said partition walls.
Claim 17
Dependent Claim
40 words
A reactor as recited in claim 10 wherein said means for defining discharge openings in said partition walls define discharge openings at different heights in said partition walls so that the secondary gas is relatively uniformly distributed in said compartments.
Claim 18
Dependent Claim
26 words
A reactor as recited in claim 10 further comprising means for separately regulating the feed of secondary gas into different compartments defined by said partition walls.
Claim 19
Dependent Claim
117 words
A fluidized bed reactor comprising: a reactor chamber; a gas distributor plate disposed in said reactor chamber; means for supplying primary gas to the reactor chamber through said gas distributor plate; and means for providing secondary gas to said reactor chamber above said distributor plate, said means comprising partition wall means which divide the space immediately above the gas distributor plate into compartments, and means defining discharge openings in said partition walls for the supply of secondary gas through the discharge openings into the compartments; said means for defining discharge openings in said partition walls defining discharge openings at different heights in said partition walls so that the secondary gas is relatively uniformly distributed in said compartments.
Claim 20
Dependent Claim
117 words
A fluidized bed reactor comprising: a reactor chamber; a gas distributor plate disposed in said reactor chamber; means for supplying primary gas to the reactor chamber through said gas distributor plate; and means for providing secondary gas to said reactor chamber above said distributor plate, said means comprising partition wall means which divide the space immediately above the gas distributor plate into compartments, and means defining discharge openings in said partition walls for the supply of secondary gas through the discharge openings into the compartments; said means for defining discharge openings in said partition walls defining discharge openings at different heights in said partition walls so that the secondary gas is relatively uniformly distributed in said compartments.
Claim 21
Dependent Claim
124 words
A fluidized bed reactor comprising: a reactor chamber; a gas distributor plate disposed in said reactor chamber; means for supplying primary gas to the reactor chamber through said gas distributor plate; and means for providing secondary gas to said reactor chamber above said distributor plate, said means comprising partition wall means which divide the space immediately above the gas distributor plate into compartments, and means defining discharge openings in said partition walls for the supply of secondary gas through the discharge openings into the compartments; said means defining said discharge openings in said discharge walls defining openings in said openings in said partition walls at selected heights that open into each compartment defined by the partition wall in which said discharge openings are defined.
Claim 22
Dependent Claim
124 words
A fluidized bed reactor comprising: a reactor chamber; a gas distributor plate disposed in said reactor chamber; means for supplying primary gas to the reactor chamber through said gas distributor plate; and means for providing secondary gas to said reactor chamber above said distributor plate, said means comprising partition wall means which divide the space immediately above the gas distributor plate into compartments, and means defining discharge openings in said partition walls for the supply of secondary gas through the discharge openings into the compartments; said means defining said discharge openings in said discharge walls defining openings in said openings in said partition walls at selected heights that open into each compartment defined by the partition wall in which said discharge openings are defined.
Claim 23
Dependent Claim
26 words
A reactor as recited in claim 17 further comprising means for separately regulating the feed of secondary gas into different compartments defined by said partition walls.
Claim 24
Dependent Claim
17 words
A method as recited in claim 7 including preventing the passage of particles through the vertical walls.
References Cited (Backward Citations)
US3908284A
Cited
US3736908A
Cited
US4184455A
Cited
US4257478A
Cited
US4338283A
Cited
US4330502A
Cited
US4628831A
Cited
US4552097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |