US3552333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the concomitant incineration of solid refuse and of aqueous sewage sludge
Assignee: Von Roll AG
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Filing: 1968-11-22
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Granted: 1971-01-05
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Expires: 1988-11-22
Abstract
Abstract A novel process is disclosed for the concomitant incineration of solid refuse and of aqueous sewage sludge. The process utilizes thermal dewatering of the sludge prior to its incineration by means of heat resulting from the incineration of the solid refuse, the dried sludge then being added to the solid refuse and burnt together. Any malodorous gases or vapors produced are reconducted into the combustion chamber of the incinerator utilized whereby odorless operation is ensured. Various operational layouts for carrying out the novel process are also described herein.
Inventors
- 👤 Otto Salamon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:24
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/44; F23G5/46; C; C02; C02F; C02F11/00; C02F11/12; C02F11/13; F23G5/008
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
26 words
A process as defined in claim 1, wherein the hot combustion gases effluent from the incineration of the solid refuse are directly conducted to the vaporizer.
Claim 2
Dependent Claim
52 words
A process as defined in claim 1, wherein steam is generated in a boiler heated by the hot combustion gases effluent from the incineration of the solid refuse, the steam being passed to the vaporizer to heat and substantially completely dewater the sewage sludge, the boiler operating with a closed water/steam circuit.
Claim 3
Dependent Claim
49 words
A process as defined in claim 1, wherein the indirect heating and the substantially complete dewatering of the sewage sludge is carried out in a plurality of vaporizers, the secondary water vapor produced in one vaporizer being conducted to another vaporizer and being utilized as a heating agent therein.
Claim 4
Independent Claim
185 words
An apparatus for the concomitant incineration of solid refuse and aqueous sewage sludge such as from community sewage treatment plants, said apparatus comprising a combustion chamber means for the incineration of solid refuse, said combustion chamber means having a charging shaft; a vaporizer means for dewatering and substantially completely drying sewage sludge, said vaporizer means having a sewage sludge inlet and outlet and a secondary water vapor outlet all in a secondary side thereof, and having an inlet and outlet in a primary, heating side thereof; said combustion chamber of said solid refuse incinerator being connected at least indirectly to said inlet in the primary, heating side of said vaporizer means by a duct means for the hot combustion gases emanating from said combustion chamber means; a conveyor means for conveying substantially completely dried sewage sludge from said sewage sludge outlet of said vaporizer means to said charging shaft of said combustion chamber means; means coupled to said sewage sludge inlet of said vaporizer means for depositing sewage sludge therein; and means coupled to said charging shaft for charging said combustion chamber with solid refuse.
Claim 5
Dependent Claim
75 words
An apparatus as defined in claim 5, wherein said duct means directly connects said combustion chamber for said solid refuse to said inlet in said primary, heating side of said vaporizer means, and further including means coupled between said secondary water vapor outlet of said vaporizer means and said combustion chamber means, whereby secondary water vapor produced in said vaporizer means by heating and substantially completely dewatering of said sewage sludge is deodorized by superheating.
Claim 6
Dependent Claim
43 words
An apparatus as defined in claim 5, further including a boiler means connected to said combustion chamber means by said duct means, said boiler means being connected to said inlet opening in said primary, heating side of said vaporizer means by a steam-line.
Claim 7
Dependent Claim
16 words
An apparatus as defined in claim 7, further including at least two vaporizer means, coupled together.
Claim 8
Dependent Claim
131 words
An apparatus as defined in claim 8, wherein said boiler means is connected to said inlet in the primary, heating side of a first vaporizer means by means of said steamline, and wherein the secondary water vapor outlet of the secondary side of said first vaporizer means is connected to the inlet in the primary, heating side of a second vaporizer means whereby the secondary water vapor produced in said first vaporizer means serves as a heating steam supply-line for said second vaporizer means; and wherein said seconDary water vapor outlet in the secondary side of said second vaporizer means is coupled to said combustion chamber means by a return line for the secondary water vapor produced in said second vaporizer means by the heating and dewatering of the sewage sludge.
Claim 9
Dependent Claim
61 words
An apparatus as defined in claim 8, wherein said two vaporizer means are disposed in series with one another on their sewage sludge-sides, said sewage sludge outlet of said second vaporizer means being connected to said sewage sludge inlet of said first vaporizer means, and wherein said sewage sludge outlet of said first vaporizer means is connected to said conveyor means.
Claim 10
Dependent Claim
41 words
An apparatus as defined in claim 8, wherein said two vaporizer means are arranged in parallel with one another with respect to their sewage sludge-sides, and wherein each sewage sludge-outlet of said two vaporizer means is coupled to said conveyor means.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |