US3861331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving bottom incinerator
Assignee: Kureha Corp
•
Filing: 1973-07-20
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Granted: 1975-01-21
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Expires: 1993-07-20
Abstract
Abstract A moving bottom type incineration oven having: an inlet for supplying mineral pebbles or grains, the inlet being located in a first side wall of the oven; an outlet for removing the incinerated residue and the mineral pebbles or grains, the outlet being located in a second side wall of the oven, opposite the first side wall; and a conveying means forming the bottom of the oven and having an upper surface running from the inlet toward the outlet. Mineral pebbles are deposited on the upper surface of the conveying means to form a layer thereon. Rubbish deposited on the layer of mineral pebbles is incinerated. The conveying means may be a single conveyor or a combination or plurality of conveyors of relatively short length arranged as stairs. The combustion gas may be introduced into the oven through the layer of mineral pebbles or crushed rock, or alternatively, through port or ports in the side walls.
Inventors
- 👤 Shigeru Saitoh
- 👤 Tetsuya Watanabe
- 👤 Noboru Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:25
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/002; F23G5/004
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
136 words
An incineration furnace comprising: a housing; means constituting a movable bottom portion of said housing; means for depositing a support material selected from pebbles and crushed rock onto said movable bottom portion to form a layer thereon; means for moving said bottom portion and said layer of support material transversely along said housing into a rubbish or waste combustion stage and through an outlet in said housing; means for introducing rubbish or waste onto the top of said layer prior to said combustion stage; means for burning said rubbish or waste within said housing to produce an incombustible residue; and means for closing off space above said layer at said outlet so as to obstruct air from entering the housing through said outlet while permitting withdrawal of said support material together with said incombustible residue therefrom.
Claim 2
Dependent Claim
136 words
An incineration furnace comprising: a housing; means constituting a movable bottom portion of said housing; means for depositing a support material selected from pebbles and crushed rock onto said movable bottom portion to form a layer thereon; means for moving said bottom portion and said layer of support material transversely along said housing into a rubbish or waste combustion stage and through an outlet in said housing; means for introducing rubbish or waste onto the top of said layer prior to said combustion stage; means for burning said rubbish or waste within said housing to produce an incombustible residue; and means for closing off space above said layer at said outlet so as to obstruct air from entering the housing through said outlet while permitting withdrawal of said support material together with said incombustible residue therefrom.
Claim 3
Dependent Claim
16 words
The furnace of claim 1 additionally comprising means for separating said support material from said residue.
Claim 4
Dependent Claim
33 words
The furnace of claim 1 wherein said means for moving said support material along the bottom of the furnace comprises at least one endless belt having an upper run and a lower run.
Claim 5
Dependent Claim
50 words
The furnace of claim 1 wherein said means for moving said support material along the bottom of the furnace comprises a plurality of endless belts arranged in stepped fashion so that the waste or rubbish is sequentially transferred from an upper endless belt to the next adjacent lower endless belt.
Claim 6
Dependent Claim
28 words
The furnace of claim 3 wherein said endless belt has a plurality of aperatures and wherein said furnace additionally comprises means for introducing combustion air through said aperatures.
Claim 7
Dependent Claim
23 words
The furnace of claim 5 wherein said endless belt is in the form of a plurality of metal strips coupled to each other.
Claim 8
Dependent Claim
16 words
The furnace of claim 1 wheren the bottom of the furnace is a stationary metal support.
Claim 9
Dependent Claim
29 words
The furnace of claim 7 wherein said metal support has a plurality of aperatures and wherein the furnace additionally comprises means to introduce combustion air upwardly through said aperatures.
Claim 10
Dependent Claim
63 words
A process for the incineration of rubbish or waste in a furnace comprising: forming a layer of an incombustible support material selected from pebbles and crushed rock on a bottom portion of the furnace; moving said layer through the furnace at a predetermined rate; supplying the rubbish to be burned to the surface of said layer; and burning said rubbish within the furnace.
Claim 11
Dependent Claim
63 words
A process for the incineration of rubbish or waste in a furnace comprising: forming a layer of an incombustible support material selected from pebbles and crushed rock on a bottom portion of the furnace; moving said layer through the furnace at a predetermined rate; supplying the rubbish to be burned to the surface of said layer; and burning said rubbish within the furnace.
Claim 12
Dependent Claim
23 words
The process of claim 9 additionally comprising introducing at least a portion of the combustion air into the furnace upwardly through said layer.
Claim 13
Dependent Claim
10 words
The process of claim 9 wherein said moving is intermittent.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |