Patent US3842762A successfully refreshed from Google Patents.
US3842762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for disposing of solid wastes
Assignee: Grumman Ecosystems Corp
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Filing: 1973-07-13
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Granted: 1974-10-22
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Expires: 1993-07-13
Abstract
Abstract Apparatus for disposing of solid wastes having a kiln sealed at its feed and discharge ends. A compacted slug of waste material is collected at the feed end and when the slug is of sufficient size and density, it is pushed into the kiln combustion chamber where it is burned. The combustion gases enter a secondary combustion chamber which is provided with an afterburner. After complete combustion, the gases exhaust through a stack. The kiln is provided with a unique air distribution system and is formed of a steel outer jacket and a spaced inner refractory jacket which has a plurality of openings to permit the feeding of oxygen or other combustion supporting gas from outside the kiln to the inside of the kiln. The kiln rotates about its axis to improve the combustion of the waste material. The burning is in a controlled atmosphere since the discharge end of the kiln is water sealed. The ash from the combustion chamber drops onto a water submerged conveyor for automatic removal from the system while maintaining the seal of the controlled combustion furnace.
Inventors
- 👤 E Sargent
- 👤 A Doner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:08
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/08; F23G5/14; F23G5/18; F23G5/20; F23G2900/00; F23G2900/50001
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
194 words
Apparatus for disposing of solid waste material comprising: a cylindrical kiln having a feed end and a discharge end and rotatable about its axis, mounted such that the feed end is somewhat higher than the discharge end; means for feeding compacted solid waste material into the kiln through the feed end thereof; first sealing means for sealing the feed end of the kiln from the ambient environment such that a compacted slug of solid waste material may be fed to the kiln without breaking the seal; second sealing means for sealing the discharge end of the kiln from the ambient environment; means for rotating the kiln; means for burning the solid waste material in the kiln; means for introducing combustion supporting gas such as air into the kiln to thereby promote the burning of the solid waste material in the kiln; a secondary combustion chamber mounted at the discharge end of the cylindrical kiln for incinerating those combustibles which pass through the kiln; a stack connected to the secondary combustion chamber for removing the exhaust gases; and collecting means for collecting solid ash which is ejected from the discharge end of the cylindrical kiln.
Claim 2
Dependent Claim
194 words
Apparatus for disposing of solid waste material comprising: a cylindrical kiln having a feed end and a discharge end and rotatable about its axis, mounted such that the feed end is somewhat higher than the discharge end; means for feeding compacted solid waste material into the kiln through the feed end thereof; first sealing means for sealing the feed end of the kiln from the ambient environment such that a compacted slug of solid waste material may be fed to the kiln without breaking the seal; second sealing means for sealing the discharge end of the kiln from the ambient environment; means for rotating the kiln; means for burning the solid waste material in the kiln; means for introducing combustion supporting gas such as air into the kiln to thereby promote the burning of the solid waste material in the kiln; a secondary combustion chamber mounted at the discharge end of the cylindrical kiln for incinerating those combustibles which pass through the kiln; a stack connected to the secondary combustion chamber for removing the exhaust gases; and collecting means for collecting solid ash which is ejected from the discharge end of the cylindrical kiln.
Claim 3
Dependent Claim
26 words
The invention of claim 1 including: removing means for removing such solid ash without breaking the seal at the said discharge end of the cylindrical kiln.
Claim 4
Dependent Claim
67 words
The invention of claim 2 wherein: the second sealing means comprises a pool of liquid just below the said discharge end of the cylindrical kiln; and the removing means comprises a conveyor moving through the liquid pool to the ambient environment such that the liuqid serves to seal the discharge end of the cylindrical kiln while removal of the solid ash takes place on a continuous basis.
Claim 5
Dependent Claim
68 words
The invention of claim 1 wherein the first sealing means comprises: a door movable between a first position in which the feed end of the cylindrical kiln is closed to the ambient environment and a second position in which a compacted slug of waste material of predetermined size being fed to the kiln seals the said feed end as the door is opened to receive the said slug.
Claim 6
Dependent Claim
69 words
The invention of claim 1 wherein the cylindrical kiln comprises: an outer steel shell; an inner refractory shell spaced from the outer steel shell; the inner refractory shell having a plurality of openings therein leading from the space between the outer steel shell and the inner refractory shell to the interior of the cylindrical kiln forming the means for introducing combustion supporting gas or air into the cylindrical kiln.
Claim 7
Dependent Claim
35 words
The invention of claim 1 wherein: the secondary combustion chamber is provided with an afterburner mounted above the discharge end of the cylindrical kiln for burning any unburned solid particles carried by the exhaust gases.
Claim 8
Dependent Claim
59 words
The invention of claim 6 including: a spray chamber mounted above the discharge end of the cylindrical kiln and below the secondary combustion chamber; at least one spray nozzle mounted in the spray chamber for wetting the solid ash particles carried in the exhaust gases and causing said particles to drop below the discharge end of the cylindrical kiln.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |