US5922092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottom feed - updraft gasification system
Assignee: Individual
•
Filing: 1996-12-05
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Granted: 1999-07-13
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Expires: 2016-12-05
Abstract
Abstract A gasification system for solid wastes having a thermal reactor and a mechanical gas cleaner, an indirect heat exchange cooler, and an electrostatic precipitator for cleaning and cooling the produced gas. Feed material is continuously fed to the central section of the thermal reactor above an air introduction manifold and nozzles and in an upward direction, forming a stratified charge. As feed material moves upward and outward from the reactor center it is reduced to ash. An agitator assures contact between the hot particulate product and hot gases resulting in gasification of the feed material and net movement to the sidewall of the thermal reactor, forming ash. The air introduction nozzles serve as a grate. Ash descends along the sidewall to the reactor base for removal. The mechanical cleaner has a high speed rotating brush-like gas separator element and scraper combination which removes condensed tars and particulates from the produced gas stream. The device is self cleaning in that condensed tars and particulates agglomerate on the high speed rotating bristle elements and, upon reaching adequate size and mass, are thrown off by centrifugal force to the cylindrical sidewall, where scrapers remove accumulated material which falls to the separator base for removal. An electrostatic precipitator having a cylindrical brush-like electrode suspended from one end by an insulated arm, removes remaining particles or aerosols from the product gas.
Inventors
- 👤 Leland T. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:56
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/06; C10J3/14; B; B01; B01D; B01D45/00; B01D45/12; B01D45/14; B03; B03C; B03C3/00; B03C3/34; B03C3/36; B03C3/40; B03C3/41; B03C3/86; B03C3/88; C10J3/20; B03C2201/00; B03C2201/10; C10J2200/00; C10J2200/15; C10J2200/158; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
287 words
A mechanical cleaner for cleaning particulate laden gaseous effluent from the thermolytic decomposition of organic solid materials comprising upper and lower sections, a substantially cylindrical sidewall having a vertical central axis and forming said upper section, and a high-speed rotating brush element located along said axis in said upper section, said high speed rotating brush element being substantially cylindrical in shape and having a high speed rotary shaft disposed along said axis and bristles extending radially from and attached to said high speed rotary shaft, said bristles being so disposed as to form a helix having an axis along said high-speed rotating shaft and operable to assist in moving said particle laden gaseous effluent from said lower section to said upper section, said mechanical cleaner further comprising scraping means located in said upper section of said mechanical cleaner so disposed as to sweep the inner surface of said cylindrical sidewall, said scraping means further comprising scraper blades to sweep said cylindrical sidewall, support members to support said scraper blades, and a low speed rotating shaft connected to low speed drive means for rotating said scraping means resulting in said cylindrical sidewall sweeping, said support members being radially attached to said low speed rotary shaft, said scraping means further comprising brushes disposed on and extending along partial lengths of said scraper blades, said brushes being so arranged as to collectively sweep the entire inner surface of said cylindrical sidewall along the length of said scraper blades, said mechanical cleaner further comprising a cooling jacket integral with said cylindrical, sidewall of said upper section of said mechanical cleaner and a cooling cage located in said upper section coaxially between said high speed rotating brush element and said scraper blades.
Claim 2
Dependent Claim
287 words
A mechanical cleaner for cleaning particulate laden gaseous effluent from the thermolytic decomposition of organic solid materials comprising upper and lower sections, a substantially cylindrical sidewall having a vertical central axis and forming said upper section, and a high-speed rotating brush element located along said axis in said upper section, said high speed rotating brush element being substantially cylindrical in shape and having a high speed rotary shaft disposed along said axis and bristles extending radially from and attached to said high speed rotary shaft, said bristles being so disposed as to form a helix having an axis along said high-speed rotating shaft and operable to assist in moving said particle laden gaseous effluent from said lower section to said upper section, said mechanical cleaner further comprising scraping means located in said upper section of said mechanical cleaner so disposed as to sweep the inner surface of said cylindrical sidewall, said scraping means further comprising scraper blades to sweep said cylindrical sidewall, support members to support said scraper blades, and a low speed rotating shaft connected to low speed drive means for rotating said scraping means resulting in said cylindrical sidewall sweeping, said support members being radially attached to said low speed rotary shaft, said scraping means further comprising brushes disposed on and extending along partial lengths of said scraper blades, said brushes being so arranged as to collectively sweep the entire inner surface of said cylindrical sidewall along the length of said scraper blades, said mechanical cleaner further comprising a cooling jacket integral with said cylindrical, sidewall of said upper section of said mechanical cleaner and a cooling cage located in said upper section coaxially between said high speed rotating brush element and said scraper blades.
Claim 3
Dependent Claim
42 words
The mechanical cleaner of claim 1 wherein said high-speed rotating brush element further comprises a harmonic balancer located at a lower end of said high speed rotating shaft and drive means located at an upper end of said high speed rotary shaft.
Claim 4
Dependent Claim
41 words
The mechanical cleaner of claim 1 wherein said lower section of said mechanical cleaner comprises an inverted truncated conical sidewall portion located below said upper section and a cylindrical sidewall portion located below and in communication with said conical sidewall section.
Claim 5
Dependent Claim
54 words
The mechanical cleaner of claim 3 wherein said scraping means further comprises lower scraper blades and lower support member mounted on said low speed rotating shaft, said lower scraper blades being so positioned as to sweep the inner surface of said inverted truncated conical sidewall portion of said lower section of said mechanical cleaner.
Claim 6
Dependent Claim
47 words
The mechanical cleaner of claim 3 and further comprising a tangential inlet for introducing particle laden gaseous effluent located in said cylindrical sidewall portion of said lower section of said mechanical cleaner for inducing swirl in the gaseous effluent as it travels upward within said mechanical cleaner.
Claim 7
Dependent Claim
32 words
The mechanical cleaner of claim 1 further comprising a mechanical cleaner conduit in fluid communication with said upper section of said mechanical cleaner for removing cleaned gaseous effluent from said mechanical cleaner.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-07-12 | 2003-01-11 | 2003-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-07-12 | 2007-01-11 | 2007-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-07-12 | 2011-01-11 | 2011-07-13 | $7700.00 | Window Closed / Lapsed |