US3610329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube plate for hot gas coolers
Assignee: BASF SE
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Filing: 1969-12-29
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Granted: 1971-10-05
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Expires: 1989-12-29
Abstract
Abstract A tube plate for heat exchangers, particularly for hotgas coolers, wherein the gas inlet is exposed to gas temperatures exceeding 500* C. at high gas velocities, and wherein the gas inlet portions of the tubes conveying the gas that is to be cooled are double-walled and the two walls are annularly interconnected at the inlet end, the annular jacketing chambers thus formed each containing a coaxially inserted baffle tube for guiding the coolant, and the ends of said baffle tubes being fixed in a supplementary tube plate.
Inventors
- 👤 Ferdinand Markert
- 👤 Michael Schunck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:33
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28F9/18; F28F9/185; C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; F28D; F28D7/00; F28D7/10; F28D7/12; F28F9/0229; F28D21/00; F28D2021/0019; F28D2021/0075
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A tube plate adapted for use in a hot gas cooler in which the pressure differential between the gas and the coolant is high and which serves for cooling hot gases flowing at high velocity through the gas-conveying tubes, which comprises a tube-mounting plate, a plurality of gas-conveying tubes mounted in and extending through said plate, the gas-inlet ends of said gasconveying tubes being double-walled and forming an annular jacket around each tube, the two annular walls thereof being annularly interconnected to close the respective jackets at the gas inlet ends of said tubes, the jacketed portion of said tubes projecting beyond the upstream plane of said tube plate, and baffle tubes coaxially mounted in respective annular jackets and terminating in spaced relationship to the annular interconnection of the respective gas inlet ends of said gas-conveying tubes.
Claim 2
Dependent Claim
137 words
A tube plate adapted for use in a hot gas cooler in which the pressure differential between the gas and the coolant is high and which serves for cooling hot gases flowing at high velocity through the gas-conveying tubes, which comprises a tube-mounting plate, a plurality of gas-conveying tubes mounted in and extending through said plate, the gas-inlet ends of said gasconveying tubes being double-walled and forming an annular jacket around each tube, the two annular walls thereof being annularly interconnected to close the respective jackets at the gas inlet ends of said tubes, the jacketed portion of said tubes projecting beyond the upstream plane of said tube plate, and baffle tubes coaxially mounted in respective annular jackets and terminating in spaced relationship to the annular interconnection of the respective gas inlet ends of said gas-conveying tubes.
Claim 3
Dependent Claim
67 words
A tube plate as claimed in claim 1, a supplementary tube sheet downstream from said tube plate, said gas-conveying tubes extending through respective openings in said tube sheet, and said baffle tubes respectively being mounted in said openings with an annular space between respective gas-conveying tubes and baffle tubes, said annular spaces respectively communicating said jackets and the space between said tube sheet and said tube plate.
Claim 4
Dependent Claim
29 words
A tube plate as claimed in claim 1, said jackets being closed at each end, and pipe means for admitting to and withdrawing from said jackets a coolant fluid.
Claim 5
Dependent Claim
21 words
A tube plate as claimed in claim 3 wherein said pipe means for withdrawing said coolant fluid are vertical Riser pipes.
Claim 6
Dependent Claim
22 words
A tube plate as claimed in claim 1, the respective annular interconnections at the inlet ends of said tubes being toroidally rounded.
Claim 7
Dependent Claim
25 words
A tube plate as claimed in claim 5 wherein the toroidally rounded interconnections have a wall thickness less than the wall thicknesses of said jacket.
Claim 8
Dependent Claim
35 words
A tube plate as claimed in claim 1 wherein the spaces between said respective jacketed portions of said tubes which project beyond the upstream plane of said tube plate are packed with an insulating material.
Claim 9
Dependent Claim
50 words
A tube plate as claimed in claim 1, means for introducing a coolant fluid communicating with the annular space between said baffle tubes and the respective outer wall of said jacket, and means for withdrawing said coolant fluid via the annular space between said baffle tube and said gas-conveying tube.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |