US3815522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for simultaneously incinerating combustible waste and sludge
Assignee: EAU ET ASSAINISSEMENT SOCEA FR
•
Filing: 1973-01-17
•
Granted: 1974-06-11
•
Expires: 1993-01-17
Abstract
Abstract The sludge is first heated by heat exchange with the fumes of combustion from the combustible waste incinerating furnace. The sludge is then allowed to bake and water is separated from the sludge so as to obtain a residue. The residue is then incinerated and the water separated out is discharged.
Inventors
- 👤 D Larger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:26
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/008
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
79 words
A process for simultaneously incinerating combustible waste and sludge comprising incinerating the combustible waste, heating the sludge in a heat exchanger by heat exchange with fumes of combustion from the incineration of the combustible waste, conducting the heated sludge to a pressure-tight unit and allowing the sludge to bake in the unit and separating water from the sludge contained in the unit so as to obtain a residue and incinerating exclusively said residue, said water separated out being discharged.
Claim 2
Dependent Claim
79 words
A process for simultaneously incinerating combustible waste and sludge comprising incinerating the combustible waste, heating the sludge in a heat exchanger by heat exchange with fumes of combustion from the incineration of the combustible waste, conducting the heated sludge to a pressure-tight unit and allowing the sludge to bake in the unit and separating water from the sludge contained in the unit so as to obtain a residue and incinerating exclusively said residue, said water separated out being discharged.
Claim 3
Dependent Claim
16 words
A process as claimed in claim 1, comprising separating the water from the sludge by decantation.
Claim 4
Dependent Claim
16 words
A process as claimed in claim 1, comprising separating the water from the sludge by flotation.
Claim 5
Dependent Claim
24 words
A process as claimed in claim 1, comprising effecting said baking of the sludge and said separation of the water from the sludge simultaneously.
Claim 6
Dependent Claim
25 words
A process as claimed in claim 1, comprising effecting said baking of the sludge and said separation of the water from the sludge in succession.
Claim 7
Dependent Claim
29 words
A process as claimed in claim 1, comprising incinerating said residue of the sludge in direct contact with fumes of combustion coming from the incineration of the combustible waste.
Claim 8
Independent Claim
109 words
An apparatus for carrying out a simultaneous incineration of combustible waste and sludge, comprising a furnace for receiving and incinerating the combustible waste, a circuit for evacuating fumes of combustion from the furnace, a heat exchanger having a sludge circuit for receiving the sludge and a circuit for fumes constituted by a part of the circuit for evacuating the fumes from the furnace, a unit capable of baking the sludge under pressure and separating water from the sludge and having an inlet connected to the sludge circuit of the heat exchanger and an outlet for the baked sludge, and a chamber for incinerating the sludge connected to said outlet.
Claim 9
Independent Claim
109 words
An apparatus for carrying out a simultaneous incineration of combustible waste and sludge, comprising a furnace for receiving and incinerating the combustible waste, a circuit for evacuating fumes of combustion from the furnace, a heat exchanger having a sludge circuit for receiving the sludge and a circuit for fumes constituted by a part of the circuit for evacuating the fumes from the furnace, a unit capable of baking the sludge under pressure and separating water from the sludge and having an inlet connected to the sludge circuit of the heat exchanger and an outlet for the baked sludge, and a chamber for incinerating the sludge connected to said outlet.
Claim 10
Dependent Claim
17 words
An apparatus as claimed in claim 7, wherein the unit is a sludge baking and decantation unit.
Claim 11
Dependent Claim
17 words
An apparatus as claimed in claim 7, wherein the unit is a sludge baking and flotation unit.
Claim 12
Dependent Claim
19 words
An apparatus as claimed in claim 7, wherein the unit comprises a single heat insulated vessel put under pressure.
Claim 13
Dependent Claim
40 words
An apparatus as claimed in claim 7, wherein the unit comprises a heat insulated baking vessel and a vessel for separating the water from the sludge under pressure connected in series with the baking vessel between said inlet and outlet.
Claim 14
Dependent Claim
32 words
An apparatus as claimed in claim 7, wherein the chamber for incinerating the sludge is constituted by a part of the circuit for evacuating fumes from the furnace incinerating the combustible waste.
Claim 15
Dependent Claim
36 words
An apparatus as claimed in claim 12, wherein said part of the circuit for evacuating fumes is upstream of the heat exchanger with respect to the travel of the fumes through the circuit for evacuating fumes.
Claim 16
Dependent Claim
22 words
An apparatus as claimed in claim 7, comprising a water vapour condenser communicating with the interior of the baking and separating unit.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |