US5589599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrolytic conversion of organic feedstock and waste
Assignee: Individual
•
Filing: 1994-06-07
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Granted: 1996-12-31
•
Expires: 2014-06-07
Abstract
Abstract A self-sustaining system and process for converting organic waste feedstreams into usable solid and gas end products includes a plurality of interconnected retorts, an apparatus for flash pyrolyzing the feedstream to form intermediate gas and solid products, a means for introducing a water spray to refine and cool the intermediate products, a means for separating the gas product from the solid product and a means for regenerating, and thereby further refining, the solid product. In a self-sustaining process, wastes which would otherwise be landfilled are converted to an activated carbon product and a combustible gas mixture of hydrogen, carbon monoxide, and lower hydrocarbons.
Inventors
- 👤 Frederick G. McMullen
- 👤 Dillon G. McMullen
- 👤 Roger B. McMullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:37
CPC Classifications
C; C10; C10B; C10B7/00; C10B7/10; C10B47/00; C10B47/28; C10B47/32; C10B47/44; C10B53/00; C10B53/02; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02P; Y02P20/00; Y02P20/10; Y02P20/129; Y02P20/133; Y02W; Y02W10/00; Y02W10/30; Y02W10/37
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
120 words
A process for producing usable gaseous fuel and a carbonaceous an solid from a substantially organic feedstream such as municipal wastes comprising: subjecting the feedstream to flash pyrolysis at a temperature of from about 700° to about 2400° F. to form intermediate solid and gas products; subjecting the intermediate products to a series of water sprays thereby creating a superheated steam with at least the first of said water sprays and later water sprays cooling and condensing the products, scrubbing and contracting the gases, and forming a slurry with the solid product; separating the gas from the slurry; scrubbing and drying the gas to remove selected compounds; draining the water from the solid in the slurry; and drying the solid.
Claim 2
Dependent Claim
120 words
A process for producing usable gaseous fuel and a carbonaceous an solid from a substantially organic feedstream such as municipal wastes comprising: subjecting the feedstream to flash pyrolysis at a temperature of from about 700° to about 2400° F. to form intermediate solid and gas products; subjecting the intermediate products to a series of water sprays thereby creating a superheated steam with at least the first of said water sprays and later water sprays cooling and condensing the products, scrubbing and contracting the gases, and forming a slurry with the solid product; separating the gas from the slurry; scrubbing and drying the gas to remove selected compounds; draining the water from the solid in the slurry; and drying the solid.
Claim 3
Dependent Claim
43 words
The process set forth in claim 1 further including the steps of subjecting the dried solid to further pyrolysis, thereby liberating and cracking hydrocarbons entrained therein and forming additional hydrogen such that additional gas is formed; and separating the gas from the solid.
Claim 4
Dependent Claim
22 words
The process set forth in claim 1 further including the step of drying the substantially organic feedstream prior to said flash pyrolysis.
Claim 5
Dependent Claim
45 words
The process set forth in claim 1 further including the step of cooling said intermediate solid and gas products to a temperature of about 1500° to about 1000° F. after said flash pyrolysis and prior to subjecting said products to a series of water sprays.
Claim 6
Dependent Claim
90 words
A process for producing usable gaseous fuel and carbonaceous solid from a moist and substantially organic feedstream such as municipal wastes comprising: subjecting the feedstream to flash pyrolysis at a temperature of from about 700° F. to about 2400° F. to form intermediate products; forming a slurry by subjecting the intermediate products to a series of water sprays; separating gas from the slurry; scrubbing and drying the gas; draining the water from the slurry; recycling the water drained from the slurry to the water sprays; and drying the resultant solid.
Claim 7
Dependent Claim
90 words
A process for producing usable gaseous fuel and carbonaceous solid from a moist and substantially organic feedstream such as municipal wastes comprising: subjecting the feedstream to flash pyrolysis at a temperature of from about 700° F. to about 2400° F. to form intermediate products; forming a slurry by subjecting the intermediate products to a series of water sprays; separating gas from the slurry; scrubbing and drying the gas; draining the water from the slurry; recycling the water drained from the slurry to the water sprays; and drying the resultant solid.
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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) | 1999-12-31 | 2000-07-01 | 2000-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-31 | 2004-07-01 | 2004-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-31 | 2008-07-01 | 2008-12-31 | $7700.00 | Window Closed / Lapsed |