EP0780656A2 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP0780656A2
EP0780656A2 EP96119514A EP96119514A EP0780656A2 EP 0780656 A2 EP0780656 A2 EP 0780656A2 EP 96119514 A EP96119514 A EP 96119514A EP 96119514 A EP96119514 A EP 96119514A EP 0780656 A2 EP0780656 A2 EP 0780656A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tube
tubes
tube plate
protective
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.)
Granted
Application number
EP96119514A
Other languages
German (de)
English (en)
Other versions
EP0780656A3 (fr
EP0780656B1 (fr
Inventor
Miroslan Dr.-Ing. Podhorsky
Wilhelm Dipl.-Ing. Bruckmann (Fh)
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.)
Balcke Duerr GmbH
Original Assignee
Balcke Duerr 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7781383&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0780656(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Balcke Duerr GmbH filed Critical Balcke Duerr GmbH
Publication of EP0780656A2 publication Critical patent/EP0780656A2/fr
Publication of EP0780656A3 publication Critical patent/EP0780656A3/fr
Application granted granted Critical
Publication of EP0780656B1 publication Critical patent/EP0780656B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
    • 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
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • F28F21/083—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys from stainless steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0229—Double end plates; Single end plates with hollow spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/185—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding with additional preformed parts

Definitions

  • the invention relates to a heat exchanger, in particular for waste heat use in the chemical industry, with heat exchanger tubes made of ferritic material and attached at their ends in bores of at least one tube plate and arranged in a heat exchanger housing through which a cooling medium flows.
  • the object of the invention is to protect the heat exchanger tubes of such heat exchangers, which are made of ferritic material, from embrittlement.
  • the solution to this problem by the invention is characterized in that at least in the high temperature range of the heat exchanger tubes, a protective tube made of material that is not sensitive to embrittlement, for example chromium-nickel steel, is arranged, which is fastened by hydraulic expansion in the area of the tube plate in the heat exchanger tube.
  • the diffusion of gas molecules is made possible by the protective tubes made of material that is insensitive to embrittlement, for example chromium-nickel steel, arranged within the heat exchanger tubes at least in the high temperature range of the heat-emitting medium in the ferritic material of the heat exchanger tubes prevented, so that they are effectively protected against embrittlement.
  • the protective tubes By hydraulically widening the protective tubes in the area of the tube plate, they are fastened in a particularly simple but effective manner in the respective heat exchanger tube.
  • the heat exchanger tubes can also be fastened in a manner known per se by hydraulic expansion in the tube plate.
  • the heat exchanger tubes are reliably fastened in the tube plate without a sealing weld seam connecting the end ends of the heat exchanger tubes to the tube plate being loaded with axial tube forces in accordance with a further feature of the invention.
  • the protective tubes are hydraulically expanded in the area of the hydraulic expansion of the heat exchanger tubes, and this expansion process of the heat exchanger tubes on the one hand and the protective tubes on the other hand can take place either simultaneously or in succession in time.
  • an additional insert tube provided on the outside with insulation, made of material which is insensitive to embrittlement, for example chromium-nickel steel, in the inlet area of the protective tubes.
  • the insulation of which preferably has an axial extent corresponding to at least the thickness of the tube plate and which is fixed outside of the tube plate by hydraulic expansion on the protective tube.
  • the tube plate is protected against thermal shock-like loads, the fixing of the insert tubes on the protective tube by hydraulic expansion taking place outside the tube plate ensuring that the insulation between the protective tube and the insert tube, which is sensitive to loads, is not overloaded.
  • the protective tubes and possibly the insert tubes protrude from the tube plate and the heat exchanger tubes on the inflow side out and are attached at their ends to an intermediate floor of an entry collector, preferably by welding. In this way, an additional securing of the tube plate against an excessive temperature load can be achieved.
  • the tube plate can be provided on the inflow side with a plating made of material which is insensitive to embrittlement, for example chromium-nickel steel, in order to avoid embrittlement of the tube plate when the tube plate is directly exposed to hot gas.
  • a plating made of material which is insensitive to embrittlement for example chromium-nickel steel
  • the heat exchanger shown only schematically in FIG. 1, for example used for waste heat in the chemical industry, comprises a gas line 1, from which the nitrogen-containing gas G h, for example 480 ° C., is fed to an inlet header 2. From this inlet header 2, the hot gas G h enters heat exchanger tubes 3, which are U-shaped in the exemplary embodiment and fastened pressure-tight with both ends in a tube plate 4. The heat exchanger tubes 3 are surrounded by a housing 5, which is provided with connections (not shown in the drawing) for the supply and discharge of a medium which absorbs heat from the hot gas G h .
  • the upstream ends 3a of the heat exchanger tubes 3 protrude from the tube plate 4. They are fastened in a pressure-tight manner in a wall of the inlet header 2 to be regarded as an intermediate floor 2a to the tube plate 4, so that the hot gas G h from the inlet header 2 into the Ends 3a of the heat exchanger tubes 3 enters.
  • the hot gas G h flows through the heat exchanger tubes 3 arranged in the housing 5, heat is extracted from the gas, so that in the selected exemplary embodiment it leaves the heat exchanger tubes 3 ending on the underside of the tube plate 4, for example at a temperature of 330 ° C.
  • This cooled gas G k is symbolized by an arrow in FIG. 1.
  • a protective tube 6 is arranged in each embodiment according to FIGS. 2 and 3 in the high temperature range of the heat exchanger tubes 3 in each heat exchanger tube 3 Material, such as chrome nickel steel.
  • This protective tube 6 is fastened in the area of the tube plate 4 by hydraulic expansion in the respective heat exchanger tube 3.
  • the heat exchanger tubes 3 are also fastened to the tube plate 4 by hydraulic expansion into corresponding annular recesses in the bores of the tube plate 4. The resulting annular depressions in the interior of the heat exchanger tubes 3 were used for the hydraulic expansion of the protective tubes 6.
  • the hydraulic expansion of the heat exchanger tubes 3, on the one hand, and the protective tubes 6, on the other hand, can take place sequentially or simultaneously.
  • the diffusion of gas molecules of the heat-emitting medium, in particular a nitrogen-containing gas into the ferritic material of the heat exchanger tubes 3, is prevented by the protective tubes 6, which are arranged in the high temperature range within the heat exchanger tubes 3, and are thus effectively protected against embrittlement.
  • the axial length of the protective tubes 6 essentially depends on the temperature profile in the axial direction of the heat exchanger tubes 3 and thus on the intensity of the cooling of the heat exchanger tubes 3. In the illustrated embodiment, the cooling is so intense that the protective tubes 6 protrude beyond the tube plate 4 on the downstream side with only a slight axial extension.
  • the protective tube 6 protrudes out of the tube plate 4 on the inflow side.
  • This inflow-side end 6a of the protective tubes 6 is fastened in a pressure-tight manner in accordance with FIG.
  • the protective tube 6 is attached to the intermediate base 2a by a weld seam 7.
  • the tube plate 4 is provided with a cladding 4a on the inflow side.
  • this is a material that can be welded with ferritic material, so that a sealing weld seam 8 can be placed between the cladding 4a and the end face of each heat exchanger tube 3. Due to the fixing of the heat exchanger tube 3 on the tube plate 4 by hydraulic expansion, this sealing weld seam 8, which serves in particular for better sealing, is relieved of axial tube forces.
  • an additional insert tube 10 which is also provided on the outside with insulation 9 and is likewise made of a material which is insensitive to embrittlement, is arranged in the inlet region of the protective tubes 6.
  • the insulation 9 arranged between the inner insert tube 10 and the outer protective tube 6 protects in particular during start-up and shutdown operations against thermal shock-like loads.
  • the insulation 9 preferably extends at least over an axial length corresponding to the thickness of the tube plate 4.
  • each insert tube 10 is fixed to the protective tube 6 by hydraulic expansion outside the tube plate 4, i.e. by widening in an area in which the insert tubes 10 and protective tubes 6 immediately, i.e. rest against each other without intermediate insulation 9.
  • the tube plate 4 is provided on the inflow side with a cladding 4a, between which and the heat exchanger tube 3 a sealing weld seam 8 is placed.
  • the insert tube 10 also protrudes from the tube plate 4, with In this embodiment, the flared insert tube 10 is fastened to the intermediate base 2a of the inlet header 2 by means of a weld seam 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP96119514A 1995-12-23 1996-12-05 Echangeur de chaleur Expired - Lifetime EP0780656B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19548688 1995-12-23
DE19548688A DE19548688C2 (de) 1995-12-23 1995-12-23 Wärmetauscher zum Kühlen von stickstoffhaltigem Gas hoher Temperatur

Publications (3)

Publication Number Publication Date
EP0780656A2 true EP0780656A2 (fr) 1997-06-25
EP0780656A3 EP0780656A3 (fr) 1998-11-18
EP0780656B1 EP0780656B1 (fr) 2002-05-29

Family

ID=7781383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96119514A Expired - Lifetime EP0780656B1 (fr) 1995-12-23 1996-12-05 Echangeur de chaleur

Country Status (3)

Country Link
EP (1) EP0780656B1 (fr)
JP (1) JPH09178393A (fr)
DE (2) DE19548688C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007075634A3 (fr) * 2005-12-21 2008-01-10 Exxonmobil Res & Eng Co Materiau resistant a la corrosion pour encrassement reduit, composant de transfert thermique ameliore en termes de resistance a la corrosion et a l’encrassement et procede pour reduire l’encrassement
US8201619B2 (en) 2005-12-21 2012-06-19 Exxonmobil Research & Engineering Company Corrosion resistant material for reduced fouling, a heat transfer component having reduced fouling and a method for reducing fouling in a refinery
US8349267B2 (en) 2007-10-05 2013-01-08 Exxonmobil Research And Engineering Company Crude oil pre-heat train with improved heat transfer
US11454461B2 (en) * 2017-01-31 2022-09-27 Alfa Laval Corporate Ab Apparatus and method for protecting the tube-sheet of a syngas loop boiler

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4600041B2 (ja) * 2004-12-29 2010-12-15 洋一 広瀬 冷却装置及びストリップキャスティング装置並びにネオジウム系焼結磁石用合金鋳造薄片の冷却方法
JP5868761B2 (ja) * 2012-03-29 2016-02-24 三菱重工業株式会社 拡管方法
EP2881691A1 (fr) * 2013-12-09 2015-06-10 Balcke-Dürr GmbH Échangeur de chaleur avec une plaque tubulaire et un manchon inséré
CN105634836B (zh) 2014-10-27 2020-03-17 香港理工大学 信息处理方法及装置
JP7319139B2 (ja) * 2019-08-26 2023-08-01 株式会社アルバック 配管構造体及び熱交換器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1141239A (en) * 1967-03-16 1969-01-29 Charles B Maretzo Insert constructions for tubes of heat exchangers and condensers
US3592261A (en) * 1968-11-25 1971-07-13 Lummus Co Heat exchanger
GB1323885A (en) * 1970-01-21 1973-07-18 Clonsast Ltd Methods of making heat exchangers
DE3022480A1 (de) * 1980-06-14 1982-01-07 Uhde Gmbh, 4600 Dortmund Vorrichtung zum waermetausch zwischen einen nh (pfeil abwaerts)3(pfeil abwaerts) -konverter verlassendem kreislaufgas und wasser
US4368571A (en) * 1980-09-09 1983-01-18 Westinghouse Electric Corp. Sleeving method
US4505017A (en) * 1982-12-15 1985-03-19 Combustion Engineering, Inc. Method of installing a tube sleeve
DE3822808C2 (de) * 1988-07-06 1993-12-23 Balcke Duerr Ag Wärmetauscher mit zwischen zwei Rohrplatten angeordneten Wärmetauscherrohren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007075634A3 (fr) * 2005-12-21 2008-01-10 Exxonmobil Res & Eng Co Materiau resistant a la corrosion pour encrassement reduit, composant de transfert thermique ameliore en termes de resistance a la corrosion et a l’encrassement et procede pour reduire l’encrassement
US8037928B2 (en) 2005-12-21 2011-10-18 Exxonmobil Research & Engineering Company Chromium-enriched oxide containing material and preoxidation method of making the same to mitigate corrosion and fouling associated with heat transfer components
US8201619B2 (en) 2005-12-21 2012-06-19 Exxonmobil Research & Engineering Company Corrosion resistant material for reduced fouling, a heat transfer component having reduced fouling and a method for reducing fouling in a refinery
US8211548B2 (en) 2005-12-21 2012-07-03 Exxonmobil Research & Engineering Co. Silicon-containing steel composition with improved heat exchanger corrosion and fouling resistance
US8286695B2 (en) 2005-12-21 2012-10-16 Exxonmobil Research & Engineering Company Insert and method for reducing fouling in a process stream
US8465599B2 (en) 2005-12-21 2013-06-18 Exxonmobil Research And Engineering Company Chromiun-enriched oxide containing material and preoxidation method of making the same to mitigate corrosion and fouling associated with heat transfer components
US8470097B2 (en) 2005-12-21 2013-06-25 Exxonmobil Research And Engineering Company Silicon-containing steel compostition with improved heat exchanger corrosion and fouling resistance
US8469081B2 (en) 2005-12-21 2013-06-25 Exxonmobil Research And Engineering Company Corrosion resistant material for reduced fouling, a heat transfer component having reduced fouling and a method for reducing fouling in a refinery
US8349267B2 (en) 2007-10-05 2013-01-08 Exxonmobil Research And Engineering Company Crude oil pre-heat train with improved heat transfer
US11454461B2 (en) * 2017-01-31 2022-09-27 Alfa Laval Corporate Ab Apparatus and method for protecting the tube-sheet of a syngas loop boiler

Also Published As

Publication number Publication date
DE59609262D1 (de) 2002-07-04
EP0780656A3 (fr) 1998-11-18
EP0780656B1 (fr) 2002-05-29
JPH09178393A (ja) 1997-07-11
DE19548688A1 (de) 1997-06-26
DE19548688C2 (de) 1999-04-08

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