Patent US2895413A successfully refreshed from Google Patents.
Patent US4048286A successfully refreshed from Google Patents.
US4048286A
Expired / Lapsed
US
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Process for the decontamination of waste materials
Assignee: Linde GmbH
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Filing: 1976-03-25
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Granted: 1977-09-13
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Expires: 1996-03-25
Abstract
Abstract Combustible carbonaceous and sulfur-containing wastes, especially waste liquors of cellulose plants, are burnt with a combustion-sustaining gas having a greater oxygen concentration than atmospheric oxygen (e.g. pure oxygen) and the gaseous products of the combustion are subjected to scrubbing to remove carbon oxides. The process is carried out under pressure and preferably with two-stage combustion so that carbon monoxide produced in an initial stage can be burnt further in the combustion chamber of a gas turbine to drive the latter and generate at least part of the power necessary to operate the compressor for the oxygen-rich gas.
Inventors
- 👤 Viktor Rossmaier, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:38
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/501; F; F23; F23G; F23G7/00; F23G7/04; F23G2202/00; F23G2202/30; F23L; F23L2900/00; F23L2900/07005; Y; Y02; Y02E; Y02E20/00; Y02E20/34; Y10; Y10S; Y10S423/00; Y10S423/03
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
A process for the decomposition of a carbonaceous and sulfur-containing waste comprising the steps of burning said waste with a combustion-sustaining gas stream having an oxygen concentration of at least 50% by volume to produce an exhaust gas containing carbon oxides and sulfur dioxide; and scrubbing said sulfur dioxide from said exhaust gas to produce a scrubbed gas substantially free from sulfur oxides and a scrubbing liquid containing sulfur dioxide.
Claim 2
Dependent Claim
70 words
A process for the decomposition of a carbonaceous and sulfur-containing waste comprising the steps of burning said waste with a combustion-sustaining gas stream having an oxygen concentration of at least 50% by volume to produce an exhaust gas containing carbon oxides and sulfur dioxide; and scrubbing said sulfur dioxide from said exhaust gas to produce a scrubbed gas substantially free from sulfur oxides and a scrubbing liquid containing sulfur dioxide.
Claim 3
Dependent Claim
19 words
The process defined in claim 1 wherein the waste is burned with a gas consisting of substantially pure oxygen.
Claim 4
Dependent Claim
19 words
The process defined in claim 1 wherein said waste is burned with said combustion-sustaining gas at a superatmospheric pressure.
Claim 5
Dependent Claim
14 words
The process defined in claim 1 wherein said exhaust gas is scrubbed with water.
Claim 6
Dependent Claim
25 words
The process defined in claim 4 wherein the exhaust gas, after being scrubbed with water is scrubbed with water containing magnesium oxide or calcium oxide.
Claim 7
Dependent Claim
35 words
The process defined in claim 1, further comprising the step of removing from said exhaust gas a partial stream containing sulfur trioxide and returning same to the combustion of said waste with said combustion-sustaining gas.
Claim 8
Dependent Claim
30 words
The process defined in claim 1, further comprising the step of expanding the scrubbed exhaust gas in the combustion chamber of a turbine, and driving a load with said turbine.
Claim 9
Dependent Claim
40 words
The process defined in claim 7, further comprising the step of recovering from said turbine a gas containing waste heat and passing said gas containing waste heat in indirect heat exchange with a high pressure feedwater, thereby heating said feedwater.
Claim 10
Dependent Claim
36 words
The process defined in claim 8, further comprising the step of further heating said feedwater in a waste-heat boiler by indirect heat exchange of said exhaust gas therewith prior to the scrubbing of said exhaust gas.
Claim 11
Dependent Claim
41 words
The process defined in claim 8, further comprising the steps of controlling the combustion of said waste with said combustion-sustaining gas to form carbon monoxide from the carbonaceous substances of said waste and burning said carbon monoxide in said combustion chamber.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |