US4096065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for aerobic treatment of activated sludge
Assignee: Bayer AG
•
Filing: 1976-11-15
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Granted: 1978-06-20
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Expires: 1996-11-15
Abstract
Abstract In an apparatus for the gasification of a biomass in an aqueous medium in the presence of organic substances degradable by the biomass, comprising a gasification tank, and a clearing chamber for the gasified water-containing biomass provided concentrically around the gasification tank, the gasification tank communicating with the clearing chamber through an inlet in the latter, the improvement wherein A. the gasification tank is from about 10 to 32 meters high, has a height/diameter ratio between approximately 40 and 0.2, is provided adjacent its floor with gas inlet points, and is connected via inlet pipes to at least one gas removal and flocculation cyclone; B. the same liquid level in all the clearing chambers is maintained by means of an overflow channel at about 0.1 to 2 meters below the liquid level of the gasification tank; and C. a sludge removal pipe connects each clearing chamber with a collector pipe. Advantageously the clearing chamber is funnel shaped.
Inventors
- 👤 Werner Bruch
- 👤 Hans Guth
- 👤 Helmut Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:56
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/26; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
181 words
In an apparatus for the gasification of a biomass in an aqueous medium in the presence of organic substances degradable by the biomass, comprising a gasification tank, and at least one clearing chamber for the gasified water-containing biomass provided concentrically around the gasification tank, the gasification tank communicating with each clearing chamber through an inlet in the latter, the improvement wherein, a. the gasification tank is from about 10 to 32 meters high, has a height/diameter ratio between approximately 40 and 0.2, is provided adjacent its floor with gas inlet points, and is connected via inlet pipes for introducing said gasified water-containing biomass to at least one gas removal and flocculation cyclone said cyclone including the outlet means for removing said gas and a distribution means for introducing flocculated sludge into said clearing chamber; b. means for maintaining the same liquid level in all of the clearing chambers comprising an over flow channel at about 0.1 to 2 meters below the liquid level of the gasification tank; and c. a sludge removal pipe connecting each clearing chamber with a collector pipe.
Claim 2
Dependent Claim
181 words
In an apparatus for the gasification of a biomass in an aqueous medium in the presence of organic substances degradable by the biomass, comprising a gasification tank, and at least one clearing chamber for the gasified water-containing biomass provided concentrically around the gasification tank, the gasification tank communicating with each clearing chamber through an inlet in the latter, the improvement wherein, a. the gasification tank is from about 10 to 32 meters high, has a height/diameter ratio between approximately 40 and 0.2, is provided adjacent its floor with gas inlet points, and is connected via inlet pipes for introducing said gasified water-containing biomass to at least one gas removal and flocculation cyclone said cyclone including the outlet means for removing said gas and a distribution means for introducing flocculated sludge into said clearing chamber; b. means for maintaining the same liquid level in all of the clearing chambers comprising an over flow channel at about 0.1 to 2 meters below the liquid level of the gasification tank; and c. a sludge removal pipe connecting each clearing chamber with a collector pipe.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1, wherein the gasification tank has a height/diameter ratio between approximately 0.3 and 32.
Claim 4
Dependent Claim
33 words
An apparatus according to claim 1, wherein the gas removal and flocculation cyclone is arranged centrally in the gasification tank and is in communication via distributor arms with at least one clearing chamber.
Claim 5
Dependent Claim
25 words
An apparatus according to claim 1, wherein more than eight concentrically arranged clearing chambers are provided, and the cyclones are arranged in the clearing chambers.
Claim 6
Dependent Claim
19 words
An apparatus according to claim 1, further including an impingement plate in each clearing chamber located above the inlet.
Claim 7
Dependent Claim
25 words
An apparatus according to claim 1, wherein each clearing chamber is funnel shaped with a wall angle of about 45° to 75° to the horizontal.
Claim 8
Dependent Claim
63 words
An apparatus according to claim 1, wherein the gasification tank has a height/diameter ratio between approximately 0.5 and 20, each clearing chamber is funnel shaped with a wall angle of about 55° to 65° to the horizontal, and the overflow channel in each clearing chamber is arranged to provide a liquid lever about 0.1 to 2 meters below that in the gasification tank.
Claim 9
Dependent Claim
13 words
An apparatus according to claim 1, wherein the gas inlet points comprise injectors.
Claim 10
Dependent Claim
16 words
An apparatus according to claim 8, wherein the injectors are disposed equidistantly around the gasification tank.
Claim 11
Dependent Claim
20 words
An apparatus according to claim 1, wherein the clearing chambers are arranged concentrically around the top of the gasification tank.
References Cited (Backward Citations)
US3017951A
Cited
US3163508A
Cited
US3224964A
Cited
US3291315A
Cited
US3446357A
Cited
US3574331A
Cited
US3984321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |