US3702039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of usable products from waste material
Assignee: ANDCO INCORPORATED A CORP OF NY
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Filing: 1970-08-31
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Granted: 1972-11-07
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Expires: 1990-08-31
Abstract
Abstract In an apparatus and method of treating waste materials for recovering valuable materials including a fuel gas and liquid hydrocarbons, the waste materials are charged to the upper end of a vertical gasification chamber and preheated air blast is introduced into the hearth thereof. A producer gas is generated within the gasifier at such a temperature that metal, glass and other noncombustibles are reduced to a molten condition. As waste materials move downwardly under gravity, the hot producer gas moves upwardly pyrolyzing an organic portion of the waste materials. The gases evolved in the gasifier are passed from the upper end thereof and contacted with a cooling liquor comprising water. Thus, entrained particulate and a condensable portion including liquid hydrocarbons are separated from the evolved gases into a liquid phase whereby a fuel gas is produced.
Inventors
- 👤 Kenneth W Stookey
- 👤 Anil K Chatterjee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:30
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/24; C; C10; C10G; C10G1/00; C10G1/02; C10G1/06; C10J; C10J3/00; C10J3/02; C10J3/06; C10J3/08; C10J3/20; C10J3/30; C10J3/72; C10J3/78; C10J3/82; C10J3/84; F23G5/02; F23G5/027; F23G5/44; F23G5/46; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/12; C10J2300/1253; C10J2300/16; C10J2300/1603; C10J2300/1606; C10J2300/18; C10J2300/1861; C10J2300/1884; C10J2300/1892; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
35 words
An apparatus according to claim 1 wherein said means for supplying a hot air blast includes a refractory heat exchanger for heating the air with hot gases of combustion to produce the hot air blast.
Claim 2
Dependent Claim
30 words
An apparatus according to claim 1 wherein said chamber is provided with an annular hearth at the lower portion thereof and a tap for removing molten materials from said hearth.
Claim 3
Dependent Claim
29 words
An apparatus according to claim 3 including a plurality of circumferentially spaced penstocks having tuyeres attached thereto that project into said hearth to provide an inblow of hot blast.
Claim 4
Dependent Claim
38 words
An apparatus according to claim 1 wherein said charging mans includes a pair of charging valves, one positioned above the other for sequential operation so as to maintain pressure within said vertical chamber during charging of waste material.
Claim 5
Dependent Claim
18 words
An apparatus according to claim 1 wherein said means for passing evolved gases comprises a gas collection ring.
Claim 6
Dependent Claim
21 words
An apparatus according to claim 1 further comprising a scrubber for cooling and cleaning the fuel gas from said separating tank.
Claim 7
Dependent Claim
18 words
An apparatus according to claim 7 further comprising a means for removing entrained material, from the fuel gas.
Claim 8
Dependent Claim
52 words
An apparatus according to claim 8 wherein said removing means includes a plurality of spaced walls disposed in the path of the fuel gas, each wall having a plurality of apertures therein positioned so fuel gas passing through the apertures of one wall impinges against an adjacent wall depositing entrained materials thereon.
Claim 9
Dependent Claim
56 words
An apparatus according to claim 1 comprising means for continuously supplying a liquor comprising water to said condensing means, said condensing means directly contacting evolved gases with the liquor to form a liquid phase comprising condensable materials; means for separating a liquor comprising water from the liquid phase; and recycling the liquor to said condensing means.
Claim 10
Dependent Claim
53 words
An apparatus according to claim 7 comprising means for continuously supplying a liquor comprising water to said scrubber, said scrubber directly contacting fuel gas with the lIquor to form a liquid phase comprising condensable materials; means for separating a liquor comprising water from the liquid phase; and recycling the liquor to said scrubber.
Claim 11
Independent Claim
155 words
A method for making usable products, including a fuel gas and liquid hydrocarbons, from waste material comprising: passing the waste materials downwardly within a substantially vertical combustion chamber, directing a hot air blast into the lower portion of said vertical chamber to generate a producer gas at such a temperature as to convert inorganic materials to a molten condition at the bottom of said chamber; passing gases evolved in said chamber from the he upper portion thereof, said evolved gases including particulate and a high boiling fraction and a low boiling fraction of gases pyrolyzed and distilled from an organic portion of the waste material by the upwardly moving producer gas; and bubbling said evolved gases through a separating tank holding a liquor comprising water to form a fuel gas from the low boiling fraction and to coalesce the particulate and high boiling fraction into a liquid phase fraction at the bottom of the tank.
Claim 12
Dependent Claim
11 words
A method according to claim 12 comprising scrubbing the fuel gas.
Claim 13
Dependent Claim
16 words
A method according to claim 13 comprising removing entrained materials from said fuel gas after scrubbing.
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |