Patent US3682241A successfully refreshed from Google Patents.
US3682241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger, particularly for cooling fresh cracked and/or synthesis gases
Assignee: Schmidtsche Heissdampf GmbH
•
Filing: 1970-02-26
•
Granted: 1972-08-08
•
Expires: 1990-02-26
Abstract
Abstract A heat exchanger particularly for cooling fresh cracked and/or synthesis gases produced through high pressure and high temperature having a casing with an inlet and outlet for gases. Straight casing pipes closed at their lower ends are located in the casing with centrally located immersion tubes of smaller diameter than the casing pipes for the supply of coolants in the casing pipes. A plurality of pipes forming rows of pipes spaced from one another and a plurality of rows of pipes spaced parallel next to each other are gathered into a nest of pipes. Longitudinal fins connect the casing pipes forming rows of pipes and the casing pipes standing opposite each other of adjacent rows of pipes. The casing pipes of the individual rows of pipes are of such length that their ends form parallel rows to each other aligned perpendicular to the longitudinal axis of the casing pipes. The rows going out from both outer rows toward the center of the nest of pipes gradually rise from pipe row to pipe row. The inlet and outlet side of the nest of pipes are covered with a conical gas inlet and gas outlet head and the length of the casing pipes is such, that a row of pipes in the area of said inlet and outlet heads increase gradually according to the conicity of the heads.
Inventors
- 👤 Gerhard Clauss
- 👤 Helmut Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:43
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/005; F28D7/10; F28D7/12; F28D21/00; F28D2021/0019; F28D2021/0075; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
227 words
Heat exchanger particularly for cooling fresh cracked and/or synthesis gases produced through high pressure and high temperature comprising a casing having an inlet and outlet for gases, straight casing pipes closed at their lower ends in said casing, immersion tubes of smaller diameter than said casing pipes for a supply of coolants centrally located in said casing pipes, a plurality of said pipes forming rows of pipes spaced from one another, said rows of said pipes being parallel and forming a nest of pipes, longitudinal fins (9) connecting said casing pipes (1) forming rows of pipes (8), said casing pipes (1) standing opposite each other in adjacent rows of said pipes, said casing pipes (1) of the individual rows of pipes (8) being of such length that their ends form parallel rows to each other aligned perpendicular to the longitudinal axes of said casing pipes, and said rows extending from both outer rows (8) toward the center of said nest of pipes (2) rising stepwise from pipe row to pipe row said nest of pipes 2 has an inlet and outlet side covered with a conical gas inlet and gas outlet head (11 and 12) and the length of said casing pipes (1) forming a row of pipes (8) in the area of said inlet and outlet heads increase stepwise according to the conicity of said heads.
Claim 2
Dependent Claim
227 words
Heat exchanger particularly for cooling fresh cracked and/or synthesis gases produced through high pressure and high temperature comprising a casing having an inlet and outlet for gases, straight casing pipes closed at their lower ends in said casing, immersion tubes of smaller diameter than said casing pipes for a supply of coolants centrally located in said casing pipes, a plurality of said pipes forming rows of pipes spaced from one another, said rows of said pipes being parallel and forming a nest of pipes, longitudinal fins (9) connecting said casing pipes (1) forming rows of pipes (8), said casing pipes (1) standing opposite each other in adjacent rows of said pipes, said casing pipes (1) of the individual rows of pipes (8) being of such length that their ends form parallel rows to each other aligned perpendicular to the longitudinal axes of said casing pipes, and said rows extending from both outer rows (8) toward the center of said nest of pipes (2) rising stepwise from pipe row to pipe row said nest of pipes 2 has an inlet and outlet side covered with a conical gas inlet and gas outlet head (11 and 12) and the length of said casing pipes (1) forming a row of pipes (8) in the area of said inlet and outlet heads increase stepwise according to the conicity of said heads.
Claim 3
Dependent Claim
52 words
Heat exchanger according to claim 1 wherein said immersion tubes and said casing pipes are connected at their upper ends by feeding and outlet lines with two distributors located at two opposite sides of said gas outlet head and with accumulators 14 located on the remaining sides of said gas outlet head.
Claim 4
Dependent Claim
99 words
Heat exchanger according to claim 2 wherein said distributors and said accumulators are connected with said nest of pipes through said feeding and outlet lines set firmly in a header lined with refractory material, a casing piece lined with thermal insulation on which said header is mounted, said casing piece surrounding the center section of said nest of pipes and being spaced therefrom, a foot piece having a recess is lined with thermal insulation to which said casing piece is connected where the inlet of said casing into which the lower ends of said casing pipes project, is located.
Claim 5
Dependent Claim
80 words
Heat exchanger according to claim 2, wherein a plate is connected on the lower end of said nest of pipes in a gas tight manner having a side wall on the periphery thereof, said plate lying at a distance above said foot piece parallel to the upper foot piece surface having its greatest diameter smaller than the inside diameter of said casing and said side wall having its free edge immersed into said recess which serves as a sand seal.
Claim 6
Dependent Claim
25 words
Heat exchanger according to claim 4, wherein flexible sealings are set into said recess on which the free edge of said side wall (20) rests.
Claim 7
Dependent Claim
27 words
Heat exchanger according to claim 5 wherein a casing of thermal insulating material is installed on said plate surrounding the lower part of sAid nest of pipes.
Claim 8
Dependent Claim
27 words
Heat exchanger according to claim 4 wherein the free lower ends of said casing pipes are provided with flow favoring casing heads made of heat resisting material.
References Cited (Backward Citations)
US706787A
Cited
US1419337A
Cited
GB634747A
Cited
GB702699A
Cited
CH343179A
Cited
US3306351A
Cited
US3456719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |