Patent US3577939A successfully refreshed from Google Patents.
US3577939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incinerators
Assignee: SUPERBURN SYSTEMS Ltd
•
Filing: 1969-05-08
•
Granted: 1971-05-11
•
Expires: 1989-05-08
Abstract
Abstract In a method of disposing of town refuse, the refuse is burnt whilst supported in an incinerator by a fluidized bed of refractory granular material and the bed is separated from an outlet of the incinerator container by a mass of refractory granular material which is periodically fluidized to allow the noncombustible content of the refuse to pass therethrough and be removed from the incinerator through the outlet. The mass of refractory granular material may form an extension of the bed which supports the refuse whilst it is burnt with the mass of granular material positioned between the part of the bed which supports the refuse and an outlet from the incinerator container.
Inventors
- 👤 Duncan Ronald Muirhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:29
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/30; F23G2203/00; F23G2203/50; F23G2203/504
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
An incinerator for burning town refuse comprising an elongate container arrangeD with its longitudinal axis substantially horizontal, said container defining a first opening at one end thereof through which town refuse is introducible into the container and defining a second opening at the other end thereof, a bed of granular refractory material in the container extending between said ends with the surface of the bed positioned below the first opening and above the second opening, means for passing a gaseous medium through a part of said bed extending from the end of the container adjacent to the first opening along the greater part of the length of the container to fluidize that part of the bed, and separate means for passing a gaseous medium through the remaining part of the bed to fluidize that part of the bed.
Claim 2
Dependent Claim
138 words
An incinerator for burning town refuse comprising an elongate container arrangeD with its longitudinal axis substantially horizontal, said container defining a first opening at one end thereof through which town refuse is introducible into the container and defining a second opening at the other end thereof, a bed of granular refractory material in the container extending between said ends with the surface of the bed positioned below the first opening and above the second opening, means for passing a gaseous medium through a part of said bed extending from the end of the container adjacent to the first opening along the greater part of the length of the container to fluidize that part of the bed, and separate means for passing a gaseous medium through the remaining part of the bed to fluidize that part of the bed.
Claim 3
Dependent Claim
79 words
An incinerator as claimed in claim 1 in which the base of the container is apertured and forms one wall of each of a pair of hollow boxes extending end-to-end beneath the base, with one box positioned beneath that part of the bed which extends along the greater part of the length of the container and the other box positioned beneath the remaining part of the bed, and separate means associated with each box for supplying gaseous medium thereto.
Claim 4
Dependent Claim
15 words
An incinerator as claimed in claim 1 in which said refractory granular material is alumina.
Claim 5
Dependent Claim
29 words
An incinerator as claimed in claim 1 in which means are provided for shredding the town refuse prior to it being introduced into the container through said first opening.
Claim 6
Dependent Claim
33 words
An incinerator as claimed in claim 1 having means supported by the container above the level of the surface of the bed for spraying sewage sludge into the incinerator to be burnt therein.
Claim 7
Dependent Claim
29 words
An incinerator as claimed in claim 1 having means supported by the container above the level of the surface of the bed for introducing oxidizing gas into the container.
Claim 8
Dependent Claim
139 words
An incinerator for burning town refuse comprising an elongate container arranged with its longitudinal axis substantially horizontal and having a substantially horizontal apertured base, a first opening in the container adjacent one end thereof and a second opening in the container wall at the opposite end thereof, said second opening extending to the base of the container, said base forming one wall of each of a pair of hollow boxes extending end-to-end beneath the base with one of the boxes extending from the end of the container adjacent said first opening along the greater part of the length of the base, separate means associated with each box for supplying air thereto and a bed of alumina in the container extending between said ends with the surface of the bed positioned below the first opening and above the second opening.
Claim 9
Dependent Claim
139 words
An incinerator for burning town refuse comprising an elongate container arranged with its longitudinal axis substantially horizontal and having a substantially horizontal apertured base, a first opening in the container adjacent one end thereof and a second opening in the container wall at the opposite end thereof, said second opening extending to the base of the container, said base forming one wall of each of a pair of hollow boxes extending end-to-end beneath the base with one of the boxes extending from the end of the container adjacent said first opening along the greater part of the length of the base, separate means associated with each box for supplying air thereto and a bed of alumina in the container extending between said ends with the surface of the bed positioned below the first opening and above the second opening.
Claim 10
Independent Claim
117 words
A method of disposing of refuse which comprises the steps of providing first and second masses of refractory granular material in an incinerator defining a first opening positioned above the surface of the first mass and a second opening positioned below the surface of the second mass, fluidizing the first mass of material by passing a gaseous medium therethrough, depositing refuse through the first opening into the incinerator and burning said refuse while supported by said fluidized first mass, periodically fluidizing the second mass of refractory granular material by passing a gaseous medium therethrough to allow the noncombustible content of the refuse to pass therethrough and removing the noncombustible content of said refuse through said second opening.
Claim 11
Independent Claim
117 words
A method of disposing of refuse which comprises the steps of providing first and second masses of refractory granular material in an incinerator defining a first opening positioned above the surface of the first mass and a second opening positioned below the surface of the second mass, fluidizing the first mass of material by passing a gaseous medium therethrough, depositing refuse through the first opening into the incinerator and burning said refuse while supported by said fluidized first mass, periodically fluidizing the second mass of refractory granular material by passing a gaseous medium therethrough to allow the noncombustible content of the refuse to pass therethrough and removing the noncombustible content of said refuse through said second opening.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |