US4476791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hazardous waste steam generator
Assignee: KGI Inc
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Filing: 1983-05-25
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Granted: 1984-10-16
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Expires: 2003-05-25
Abstract
Abstract A method and apparatus of converting hazardous waste fluids into non-hazardous effluent gases within a boiler environment.
Inventors
- 👤 John M. Cegielski, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:24
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/008; F23G5/00; F23G5/44; F23G5/46
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A method of converting fluids which are or contain principle organic hazardous constituents (POHC) into non hazardous constituents comprising the sequential steps of: burning the POHC, first cooling products of combustion from said burning by heating a fluid in a heat exchange tubing by radiant heat from said burning to a given temperature for converting said POHC to non-hazardous constituents; maintaining said given temperature for sufficient residence time such that substantially all of said POHC is converted; thence second cooling said products of combustion and converted POHC by convection heating a fluid in heat exchange tubing; and exhausting the resultant products of combustion.
Claim 2
Independent Claim
103 words
A method of converting fluids which are or contain principle organic hazardous constituents (POHC) into non hazardous constituents comprising the sequential steps of: burning the POHC, first cooling products of combustion from said burning by heating a fluid in a heat exchange tubing by radiant heat from said burning to a given temperature for converting said POHC to non-hazardous constituents; maintaining said given temperature for sufficient residence time such that substantially all of said POHC is converted; thence second cooling said products of combustion and converted POHC by convection heating a fluid in heat exchange tubing; and exhausting the resultant products of combustion.
Claim 3
Dependent Claim
57 words
The method of claim 1 wherein said POHC is a polychlorinated biphenol and wherein said burning creates a temperature in the range between 3000° and 3500° F, said first cooling reduces the temperature of said products of combustion to a range between 2300° and 1800° F. and said residence time is for about one to two seconds.
Claim 4
Independent Claim
78 words
A method of converting fluids which are or contain principle organic hazardous constituents (POHC) comprising the sequential steps of: burning the POHC, first cooling the products of combustion from said burning to a given temperature which converts said POHC to non hazardous constituents, maintaining substantially said given temperature for sufficient residence time for substantially all of said POHC is converted to non hazardous constituents, thence cooling said products of combustion and converted non hazardous constituents and exhausting same.
Claim 5
Independent Claim
78 words
A method of converting fluids which are or contain principle organic hazardous constituents (POHC) comprising the sequential steps of: burning the POHC, first cooling the products of combustion from said burning to a given temperature which converts said POHC to non hazardous constituents, maintaining substantially said given temperature for sufficient residence time for substantially all of said POHC is converted to non hazardous constituents, thence cooling said products of combustion and converted non hazardous constituents and exhausting same.
Claim 6
Dependent Claim
22 words
The method of claim 3 wherein said first and second cooling occurs by indirect heat exchange with water to produce useful steam.
Claim 7
Dependent Claim
16 words
The method of claim 3 wherein said conversion is at least 99.99% of the original POHC.
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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |