EP0176680B1 - Kreuzstrom-Wärmeaustauscher - Google Patents

Kreuzstrom-Wärmeaustauscher Download PDF

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Publication number
EP0176680B1
EP0176680B1 EP85109109A EP85109109A EP0176680B1 EP 0176680 B1 EP0176680 B1 EP 0176680B1 EP 85109109 A EP85109109 A EP 85109109A EP 85109109 A EP85109109 A EP 85109109A EP 0176680 B1 EP0176680 B1 EP 0176680B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
heat
gas
block
exchange elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85109109A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0176680A2 (de
EP0176680A3 (en
Inventor
Hans-Dieter Dipl.-Ing. Schwarz
Werner Dipl.-Ing. Lichtenthäler
Friedrich W. Dr. Dipl.-Chem. Pietzarka
Ludwig Dr. Dipl.-Ing. Mühlhaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uhde GmbH filed Critical Uhde GmbH
Priority to AT85109109T priority Critical patent/ATE39022T1/de
Publication of EP0176680A2 publication Critical patent/EP0176680A2/de
Publication of EP0176680A3 publication Critical patent/EP0176680A3/de
Application granted granted Critical
Publication of EP0176680B1 publication Critical patent/EP0176680B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
    • F28F7/02—Blocks traversed by passages for heat-exchange media
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40—Shell enclosed conduit assembly
    • Y10S165/427—Manifold for tube-side fluid, i.e. parallel
    • Y10S165/429—Line-connected conduit assemblies
    • Y10S165/431—Manifolds connected in series

Definitions

  • the invention relates to a cross-flow heat exchanger, consisting of a metal housing, each with two gas inlet and outlet nozzles, at least one installation cover on the top of the housing, a block of a plurality of ceramic heat exchange elements with gas channels arranged crosswise one above the other with the channel openings in the four side surfaces, the floor and ceiling surfaces being free of channel openings, at least four heat exchange elements being joined together to form a cuboid and sealed against one another with a sealing compound, and a thermal insulation between the metal housing and the block of ceramic heat exchange elements which form-fit the block to the floor and lid and non-positively encloses in the direction of the gas inlet and outlet nozzle.
  • heat exchangers are simultaneously suitable for high working temperatures up to 1,400 ° C and, depending on the ceramic material, are resistant to aggressive media, they are particularly suitable for use in cases in which highly heated aggressive gases are to be cooled or heated.
  • Such ceramic heat exchangers can also be used if aggressive condensed phases occur when the temperature falls below the dew point.
  • heat exchanger modules as described in the last-mentioned publication, are distinguished by a large heat exchange surface and are available at low cost through the described production process. In conventional metal heat exchangers, only the highest quality materials can be used, if at all, to manufacture such heat exchangers, so that heat transfer in these cases is only possible at extremely high costs.
  • DE-A-26 31 092 an increase in the heat exchange area and the throughput of the heat exchange media is achieved in that double modules are created which are assembled by a system of partitions into a larger unit.
  • DE-A-27 07 290 describes a heat exchanger composed of individual elements, which in turn are assembled to form larger structural units with intermediate bearings made of ceramic fiber material. It is provided that the openings through which the heat exchange media flow are covered by grooves and webs.
  • DE-A-2510 893 describes a recuperator which is made up of individual shaped blocks.
  • two shaped stones form a channel for a heat exchange medium.
  • a channel for a second heat exchanger medium is only obtained together with a third molded block.
  • a recuperator is constructed in such a way that an existing chamber is bricked up with shaped stones and wall stones, the shaped stones being provided with grooves and tongues. Short-circuit flows between the two heat exchange media can optionally be avoided by bricking with mortar. Due to the size of the shaped blocks, the heat exchange area based on the volume of the recuperator is relatively small.
  • a reduction in the size of the channels which means an increase in the heat-exchanging area in a given volume, is with the pre cut stones almost impossible, since bricking becomes more and more difficult with decreasing size of the blocks and an interesting ratio of heat-exchanging surface to recuperator volume cannot be achieved.
  • DE-A-29 37 342 a larger structural unit is composed of heat exchanger elements, the individual structural elements also being clamped against one another by bolts, screws and springs.
  • the subject of DE-A-29 37 342 essentially relates to a «ceramic heat exchanger with parallel channels».
  • the channel-free side surfaces are smooth and have no dents or elevations, i. H. no profile on.
  • EP-A-0 043 113 describes a cross-flow heat exchanger which consists of ceramic heat exchanger modules which are also pressed against one another by a tensioning device consisting of screws, springs and bolts and are thus connected in a gas-tight manner.
  • the present invention has for its object to combine individual cross-flow heat exchanger elements with gas channels arranged crosswise one above the other to form larger structural units such that dimensional deviations in the geometrical arrangement of the gas channels of a heat exchanger element arranged crosswise one above the other of the subsequent heat exchanger element remain without influence on the respective total free flow cross section. Furthermore, tightness between the outer edges of the heat exchanger elements must be achieved.
  • each heat exchanger element described above is modified so that each heat exchanger element is provided on its channel-free side edges with elevations or lifts, which are formed in such a way that they interlock positively to form a hollow chamber for receiving the sealant, that the side surfaces in the gas channel area between adjacent heat exchange elements are contactless to form a flat cavity and that opposite floor and ceiling surfaces of the heat exchange elements fit into one another with at least one elevation or lift.
  • edges of the side surfaces of the heat exchanger elements are provided with a recess, the sectional view of which forms a quarter of the circumference of a symmetrical channel when several heat exchanger elements are joined together. Due to the processing of the side surfaces, the inner parts of the side surfaces provided with openings withdraw somewhat from the excavations or elevations, so that when two heat exchanger elements are assembled, a narrow chamber which is closed all around is created, so that the individual channels do not necessarily have to be arranged exactly congruently with one another.
  • a support honeycomb is placed in front of the block of the heat exchanger elements on the side faces.
  • the ceramic heat exchanger according to the invention is now constructed as follows:
  • a suitable housing z. B. made of metallic materials with arranged in a plane, mutually perpendicular bushings and approaches with connecting flanges is bricked with a temperature-resistant insulating, little or not compressible material.
  • the bottom of the housing is flat and in the cover of the housing there is a cutout of the size z. B. the intersection of the intersecting bushings.
  • a collar is firmly connected to the recess in this recess, which is provided with a sealing surface on its upper edge and can be closed gas-tight with a suitable cover.
  • the individual heat exchanger elements are now laid on the bottom of this housing dry or in a mortar bed, in which the crossing area of the passages is filled element by element, the arrangement either protruding into the passages in all 4 directions or the corner elements being fitted into a recess in the brick lining will.
  • the channels and joints obtained at the abutting edges are sealed with a suitable mass.
  • the second layer of heat exchanger elements is constructed and completed in a completely analogous manner. In this way, the process continues until the complete cross section of all passages has been provided with heat exchanger elements.
  • the recess at the top of the heat exchanger is also filled with heat-resistant and insulating lining material and the cover is fastened to the collar of the heat exchanger housing with a suitable seal in a known manner.
  • the procedure is particularly advantageous if, when using suitable materials and with a suitable choice of the layer thickness, thermal stresses are minimized, possibly by means of a multilayer arrangement, if necessary by selecting different coefficients of thermal expansion.
  • the heat exchanger housing is kept relatively cool, if necessary it is even cooled. By keeping the housing cool, the thermal expansion there is kept less than or equal to that of the arrangement of the heat exchanger elements. As a result, a pressure is exerted on the arrangement of the heat exchanger elements during operation, which ensures that the individual elements are held in position and the formation of cracks or other leaky parts oils that are observed without the application of pressure can be prevented.
  • the heat exchanger housing therefore does not require any clamping devices.
  • ceramic supporting guide honeycombs are optionally provided in front of the side surfaces of the arrangement of heat exchanger elements which are supported in the insulation layer or on the housing and are suitable for transmitting compressive forces to the centrally located elements.
  • FIG. 6 the projections and elevations provided according to the invention are arranged in mirror image, in contrast to FIG. 2.
  • FIG. 7 the individual heat exchanger elements are centered by a ring.
  • FIG 8 shows an embodiment variant of the abutting edges of four heat exchanger elements.
  • the heat exchanger element (3) which is shown schematically in Fig. 1, has the shape of a cube. Visible are 2 vertical side surfaces and the upper horizontal ceiling surface.
  • the side surfaces ran before the processing according to the invention through the planes in which the surfaces of the elevations (14) lie in the finished heat exchanger element.
  • the part of the newly obtained side surfaces covered with the openings for the channels (4 or 5) are offset inwards by the distance (15) from the original side surface.
  • These side surfaces lie in the planes which are indicated by the dashed lines (7).
  • the elevations on the vertical side faces initially have a rectangular cross section (6b) and further outward prismatic cross sections (6a), the elevations tapering outwards.
  • the right angles lie in the prismatic cross section of the elevations on the inside, while on the outlet sides of the media (1, 2) they lie on the outside of the elevations.
  • the rectangular cross section of the elevation (12b) and the prismatic cross section are identified by (12a) on the outlet sides.
  • the outer surface of the exit plane jumps back by the distance (13) behind the prismatic part of the elevation.
  • the surfaces (6b, 12c) project over the exit surfaces, the excavations are characterized by the legs of the angles (8, 9).
  • the top and bottom of the heat exchanger element has no openings of flow channels.
  • an excavation is drawn on the top, which is delimited by the edge lines (10) and is lowered by the distance (11).
  • an elevation also limited by the edges (10), it projects beyond the underside by the distance (11).
  • the lifts or elevations on the side surfaces serve to enable several heat exchanger elements to be positively attached to one another.
  • the heat exchanger element is provided on the perpendicular side surfaces with mirror symmetry with elevations rectangular in profile.
  • a ring (16) arranges the individual heat exchanger elements in alignment.
  • the hollow chamber which arises when individual heat exchanger elements are joined together, in cross section, for example, is formed as a right-angled cross within the four side edges of four heat exchanger elements and is filled with sealing compound.
  • FIG. 3 and 5 show an example of the configuration of a cross-flow heat exchanger which contains an arrangement of cross-flow heat exchanger elements (3). Shown are 4 inlet and outlet connections (18) with the associated flange connections (19) and a cover (20) which is firmly and gas-tightly connected to the body of the heat exchanger by means of screws (21).
  • the flow arrows (1) and (2) indicate the direction of flow of two intersecting heat exchange media.
  • the heat exchanger elements (3) are connected to one another in one flow direction via channels 17 and 17a. The channels of one flow direction are sealed from the other flow direction.
  • FIG. 8 shows an exemplary embodiment of a further inventive idea schematically as a sectional view through the abutting edges of four heat exchanger elements (3).
  • a sealing strip (23) or a layer of green ceramic mass is interposed between suitably designed elevations (14) or exit surfaces of each element, which are arranged on all sides, and is later unpressurized or under pressure-stamp pressure or z.
  • B. case pressure at the sintering temperature in a suitable manner, whereby a firm, seamless and tight connection of the elements is formed.
  • a heating medium z. B. a hot exhaust gas flow can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Contacts (AREA)
  • Pens And Brushes (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP85109109A 1984-09-29 1985-07-20 Kreuzstrom-Wärmeaustauscher Expired EP0176680B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109109T ATE39022T1 (de) 1984-09-29 1985-07-20 Kreuzstrom-waermeaustauscher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3435911 1984-09-29
DE3435911A DE3435911A1 (de) 1984-09-29 1984-09-29 Kreuzstrom-waermeaustauscher

Publications (3)

Publication Number Publication Date
EP0176680A2 EP0176680A2 (de) 1986-04-09
EP0176680A3 EP0176680A3 (en) 1986-12-17
EP0176680B1 true EP0176680B1 (de) 1988-11-30

Family

ID=6246767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109109A Expired EP0176680B1 (de) 1984-09-29 1985-07-20 Kreuzstrom-Wärmeaustauscher

Country Status (9)

Country Link
US (1) US4681157A (xx)
EP (1) EP0176680B1 (xx)
JP (1) JPS61105096A (xx)
AT (1) ATE39022T1 (xx)
DD (1) DD236982A5 (xx)
DE (2) DE3435911A1 (xx)
NO (1) NO853808L (xx)
SU (1) SU1426468A3 (xx)
ZA (1) ZA857471B (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19706634B4 (de) * 1997-02-20 2006-06-29 Klingenburg Gmbh Kreuzgegenstromplattenwärmetauscher
DE19815218B4 (de) * 1998-04-04 2008-02-28 Behr Gmbh & Co. Kg Schichtwärmeübertrager
DE10033908C1 (de) * 2000-07-12 2001-11-15 Bosch Gmbh Robert Mikro-Wärmeübertrager mit sich kreuzenden, voneinander getrennten Kanälen für die Wärmeträgermedien
CN1299082C (zh) * 2003-10-24 2007-02-07 上海工程技术大学 可控风温陶土金属预热器
JP4735393B2 (ja) * 2006-04-24 2011-07-27 株式会社豊田中央研究所 熱交換器及び熱交換型改質器
JP4667298B2 (ja) * 2006-04-24 2011-04-06 株式会社豊田中央研究所 熱交換器及び熱交換型改質器
CN104215103B (zh) * 2014-09-24 2016-11-30 中科苏派能源科技靖江有限公司 陶瓷换热板及由其组装的陶瓷换热芯体
CN104266525B (zh) * 2014-09-24 2016-04-06 中科苏派能源科技靖江有限公司 陶瓷换热板及其组装的空气预热器
CN104697377A (zh) * 2015-03-02 2015-06-10 中科苏派能源科技靖江有限公司 一种陶瓷换热板及空气预热器
US10228196B2 (en) * 2017-02-03 2019-03-12 Schneider Electric It Corporation Method and apparatus for modular air-to-air heat exchanger
CN112724938A (zh) * 2020-12-22 2021-04-30 云南丰普科技有限公司 一种焦炉上升烟道荒煤气余热回收装置用多面导热体

Family Cites Families (22)

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Publication number Priority date Publication date Assignee Title
NL68089C (xx) *
FR462152A (fr) * 1913-09-03 1914-01-21 Andre Angelo Fresneau Brique réfractaire spéciale pour la construction de chambres à circulation de gaz chauds et d'air ou autre gaz, en vue de la récupération de chaleur, du chauffage, et d'autres applications
US1721938A (en) * 1925-08-27 1929-07-23 Hartford Empire Co Recuperator and tile structure therefor
US1687236A (en) * 1926-07-28 1928-10-09 Decarie Incinerator Corp Heat regenerator
US1804393A (en) * 1927-03-23 1931-05-12 Verne W Aubel Heat recuperator or regenerator structure
FR691775A (fr) * 1930-02-28 1930-10-27 Récupérateur
US2577170A (en) * 1949-11-14 1951-12-04 Green Annan R Checker-brick
GB756327A (en) * 1952-10-14 1956-09-05 Lorraine Carbone Improvements in or relating to heat exchangers
GB1016313A (en) * 1962-08-31 1966-01-12 Hoechst Ag Improvements in and relating to heat exchangers
FR1368454A (fr) * 1962-08-31 1964-07-31 Hoechst Ag échangeur de chaleur pour milieux corrosifs
GB1078868A (en) * 1964-11-12 1967-08-09 Dietrich Schwemann Heat exchange column
FR1524145A (fr) * 1967-02-08 1968-05-10 Echangeur de chaleur
DE2510893C3 (de) * 1975-03-13 1979-08-16 Didier-Werke Ag, 6200 Wiesbaden Keramischer Rekuperator mit Formsteinen
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FR2436958A2 (fr) * 1978-09-22 1980-04-18 Ceraver Procede de fabrication d'un element d'echange indirect de chaleur en matiere ceramique, et element obtenu par ce procede
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DE3416908A1 (de) * 1983-05-11 1984-11-15 Stettner & Co, 8560 Lauf Kuehlkoerper

Also Published As

Publication number Publication date
DE3566573D1 (en) 1989-01-05
EP0176680A2 (de) 1986-04-09
EP0176680A3 (en) 1986-12-17
DD236982A5 (de) 1986-06-25
JPS61105096A (ja) 1986-05-23
DE3435911A1 (de) 1986-04-03
US4681157A (en) 1987-07-21
ATE39022T1 (de) 1988-12-15
NO853808L (no) 1986-04-01
ZA857471B (en) 1986-09-24
SU1426468A3 (ru) 1988-09-23

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