Patent US3797414A successfully refreshed from Google Patents.
US3797414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Canted vortex open pit incinerator
Assignee: Individual
•
Filing: 1973-01-19
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Granted: 1974-03-19
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Expires: 1993-01-19
Abstract
Abstract This disclosure describes an open pit incineration system for solid waste and refuse. It comprises a longitudinal chamber, the lower portion of which is substantially semicylindrical in shape, with two substantially parallel, sloping walls to an open top. A supply of high pressure air is provided and issues through a horizontal longitudinal slit orifice in the form of a continuous sheet of rapidly moving air. The slit orifice is mounted on top of the lower of the two walls and the air is directed across the gap between the two walls at an angle below the horizontal. The action of the high velocity sheet of air is to completely close off the top opening of the combustion chamber to the emission of products of combustion and to force them into a helically moving vortex of flame, hot air and products of combustion within the lower portion of the chamber. A grate is provided in the bottom of the chamber for receiving materials that are incapable of complete combustion. The hot gases resulting from the combustion are withdrawn axially from one or both ends of the chamber through a conduit to a heat exchanger for the generation of steam and the cooling of the hot gases, which then proceed by way of an electrostatic precipitator through the stack. The input to the combustion chamber comprises shredded solid waste material, metal and ceramic particles which are carried by means of a horizontal conveyer along the edge of the lower wall and are dumped into the combustion chamber underneath the curtain of air issuing from the slit orifice.
Inventors
- 👤 M Ahrend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:39
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/34
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
186 words
An open pit incinerator for waste and refuse products, comprisiNg: a. a longitudinal chamber formed of a substantially longitudinal semicylindrical portion with upwardly sloping, substantially parallel walls, an open top and closed at the longitudinal ends, said chamber formed of heat resistant materials and including means at the bottom thereof to remove residual products incapable of complete combustion; b. a longitudinal slit type orifice extending substantially along the longitudinal length of the lower one of the two sloping walls of said chamber, the plane of the orifice directed at an acute angle below the horizontal, downwardly and across toward the opposite sloping wall of the chamber to provide a continuous curtain of high velocity air substantially across the open mouth of said chamber; c. means to introduce material to be incinerated through a longitudinal slit in the lower of said two walls and below said curtain of air; d. means to supply sufficient air to said orifice whereby the air issuing therefrom traverses at a substantially high velocity; and e. means along the axis at at least one end wall, for withdrawing hot products of combustion.
Claim 2
Dependent Claim
186 words
An open pit incinerator for waste and refuse products, comprisiNg: a. a longitudinal chamber formed of a substantially longitudinal semicylindrical portion with upwardly sloping, substantially parallel walls, an open top and closed at the longitudinal ends, said chamber formed of heat resistant materials and including means at the bottom thereof to remove residual products incapable of complete combustion; b. a longitudinal slit type orifice extending substantially along the longitudinal length of the lower one of the two sloping walls of said chamber, the plane of the orifice directed at an acute angle below the horizontal, downwardly and across toward the opposite sloping wall of the chamber to provide a continuous curtain of high velocity air substantially across the open mouth of said chamber; c. means to introduce material to be incinerated through a longitudinal slit in the lower of said two walls and below said curtain of air; d. means to supply sufficient air to said orifice whereby the air issuing therefrom traverses at a substantially high velocity; and e. means along the axis at at least one end wall, for withdrawing hot products of combustion.
Claim 3
Dependent Claim
55 words
An incinerator as in claim 1 wherein said means to supply air to said orifice includes a blower or compressor supplying said air to a longitudinal plenum chamber to which said orifice is attached, the pressure being sufficient to create air velocity from said orifice within the range of 60 to 120 miles per hour.
Claim 4
Dependent Claim
24 words
An incinerator as in claim 1 wherein the two sloping walls are in the range of 45* to the vertical plus or minus 15*.
Claim 5
Dependent Claim
27 words
The incinerator as in claim 1 wherein the angle in said slit orifice is directed at an angle of 30* plus or minus 10* below the horizontal.
Claim 6
Dependent Claim
241 words
A solid waste and refuse material disposal system comprising: a. a first primary collection hopper to receive said waste and refuse; b. shredder means to break up said waste and refuse material into small pieces; c. first means to convey portions of said waste and refuse from said hopper means to said shredder means; d. a combustion chamber; e. second means to convey said particles from said shredder to said combustion chamber; f. said combustion chamber formed of a substantially longitudinal semicylindrical shaped chamber having substantially parallel upwardly sloping walls and an open mouth at the top of said walls with closures at both ends of the chamber, said chamber formed of heat resistant material and including means at the bottom thereof to remove residual products incapable of complete combustion; g. a longitudinal slit orifice extending substantially along the longitudinal length of the lower of said walls of said chamber and oriented downwardly across and toward the opposite wall of said chamber to provide a curtain of air substantially across said mouth from end to end of said chamber; h. means to provide sufficient air to said orifice whereby the air issuing therefrom traverses at a substantially high velocity, means to introduce said refuse material along a horizontal opening in the lower wall of said chamber along its complete length; and i. means to withdraw heated products of combustion through an axial opening in at least one wall of said chamber.
Claim 7
Dependent Claim
241 words
A solid waste and refuse material disposal system comprising: a. a first primary collection hopper to receive said waste and refuse; b. shredder means to break up said waste and refuse material into small pieces; c. first means to convey portions of said waste and refuse from said hopper means to said shredder means; d. a combustion chamber; e. second means to convey said particles from said shredder to said combustion chamber; f. said combustion chamber formed of a substantially longitudinal semicylindrical shaped chamber having substantially parallel upwardly sloping walls and an open mouth at the top of said walls with closures at both ends of the chamber, said chamber formed of heat resistant material and including means at the bottom thereof to remove residual products incapable of complete combustion; g. a longitudinal slit orifice extending substantially along the longitudinal length of the lower of said walls of said chamber and oriented downwardly across and toward the opposite wall of said chamber to provide a curtain of air substantially across said mouth from end to end of said chamber; h. means to provide sufficient air to said orifice whereby the air issuing therefrom traverses at a substantially high velocity, means to introduce said refuse material along a horizontal opening in the lower wall of said chamber along its complete length; and i. means to withdraw heated products of combustion through an axial opening in at least one wall of said chamber.
Claim 8
Dependent Claim
28 words
The system as in claim 5 including heat exchanger means and means to conduct said hot products of combustion from said combustion chamber to said heat exchanger means.
Claim 9
Dependent Claim
33 words
The system as in claim 5 including grate means along the bottom of said longitudinal chamber and conveyor means to conduct from said grate means the particles which are incapable of complete combustion.
Claim 10
Dependent Claim
20 words
The system as in claim 5, including means to remove reusable waste and refuse material prior to said combustion chamber.
Claim 11
Dependent Claim
13 words
The system as in claim 8 including magnetic separator means for ferrous materials.
Claim 12
Dependent Claim
59 words
The system as in claim 5 wherein said means to supply air to said orifice includes a blower or compressor supplying said air to a longitudinal plenum chamber to which said orifice is attached, the pressure being sufficient to create air velocity from said orifice and across said chamber within the range of 60 to 120 miles per hour.
Claim 13
Dependent Claim
17 words
The system as in claim 5 including heat exchanger means connected to the outlet of said chamber.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |