US4765809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing dust from gas
Assignee: GEA Group AG
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Filing: 1987-07-10
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Granted: 1988-08-23
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Expires: 2007-07-10
Abstract
Abstract For collection of dust from gases at temperatures up to 900° C. and under presssures up to 20 bars by means of gas-permeable two-dimensional filter elements, an apparatus is proposed which comprises a pressure-resisting cylindrical outer housing, which contains a gas-tight pear-shaped inner housing, which is movably mounted in the outer housing by a means of a heat-insulating carrying structure and is provided with a tubular gas-outlet port and comprises a cambered bottom, which contains cylindrical filter elements. A pressure-confining gas-tight compensator is provided between the tubular gas-outlet port of the inner housing and the outer housing. Because the "pressure-confining" and "supporting" functions are separate, the internal components, which will be subjected to temperatures up to 900° C., can be joined to the pressure-confining wall of the outer housing, which must not be heated above 200° C.
Inventors
- 👤 Dieter Reichel
- 👤 Rudolf Jakobs
- 👤 Lothar Brehm
- 👤 Gunter Quass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:30
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2407; B01D46/0002; B01D46/56; B01D46/58; C; C10; C10K; C10K1/00; C10K1/02; B01D2271/00; B01D2271/02; B01D2273/00; B01D2273/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
An apparatus for collecting dust from a high-temperature, high-pressure gas, comprising: a pressure-resistant cylindrical outer housing formed at a bottom thereof with a dust-collecting bin and an inlet for gas above said bin, said housing being formed with a cambered cover, a heat-insulating internal liner and a heat-insulating outer layer; means forming a cylindrical extension extending upwardly from an upper portion of said housing and provided with a horizontal gas outlet; a gas-tight pear-shaped inner housing provided with a tubular gas-outlet port extending in said gas outlet, a cambered bottom, and a plurality of cylindrical filter elements extending from said bottom of said inner housing downwardly within said outer housing; a heat-insulating carrier structure supporting said inner housing with said outer housing; and a gas-tight compensator disposed between said port and said outlet.
Claim 2
Independent Claim
133 words
An apparatus for collecting dust from a high-temperature, high-pressure gas, comprising: a pressure-resistant cylindrical outer housing formed at a bottom thereof with a dust-collecting bin and an inlet for gas above said bin, said housing being formed with a cambered cover, a heat-insulating internal liner and a heat-insulating outer layer; means forming a cylindrical extension extending upwardly from an upper portion of said housing and provided with a horizontal gas outlet; a gas-tight pear-shaped inner housing provided with a tubular gas-outlet port extending in said gas outlet, a cambered bottom, and a plurality of cylindrical filter elements extending from said bottom of said inner housing downwardly within said outer housing; a heat-insulating carrier structure supporting said inner housing with said outer housing; and a gas-tight compensator disposed between said port and said outlet.
Claim 3
Dependent Claim
29 words
The apparatus defined in claim 1 wherein said filter elements are secured in conical sockets in the bottom of said inner housing by wedges and rings with interposed seals.
Claim 4
Dependent Claim
44 words
The apparatus defined in claim 1 wherein said compensator is secured gas-tightly by welding to the tubular gas-outlet port and the gas outlet and is designed to reduce to a non-critical value the heat transfer from the tubular gas-outlet port to the gas outlet.
Claim 5
Dependent Claim
35 words
The apparatus defined in claim 1, further comprising an outer housing cover attached by theaded members to said extension to close the same and a U-section cover welded onto said inner housing above said port.
Claim 6
Dependent Claim
43 words
The apparatus defined in claim 4 wherein said inner housing has an elongate neck of sufficient length to allow repeated grinding of a weld seam joining said U-section cover to said inner housing and the welding of another cover to said inner housing.
Claim 7
Dependent Claim
55 words
The apparatus defined in claim 1 wherein said heat-insulating carrying structure comprises a cylindrical carrying element centered and movably mounted by means of lugs on its outside in U-shaped supports of the outer housing, said cylindrical carrying element having U-shaped supports on its inside for carrying lugs fastened to the outside of the inner housing.
Claim 8
Dependent Claim
18 words
The apparatus defined in claim 6 wherein heat-insulating materials are interposed between the lugs and the respective supports.
References Cited (Backward Citations)
US2804168A
Cited
US4158554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |