EP1208344B1 - Heizelement für einen regenerativ-wärmetauscher und verfahren zum herstellen eines heizelementes - Google Patents

Heizelement für einen regenerativ-wärmetauscher und verfahren zum herstellen eines heizelementes Download PDF

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Publication number
EP1208344B1
EP1208344B1 EP00953171A EP00953171A EP1208344B1 EP 1208344 B1 EP1208344 B1 EP 1208344B1 EP 00953171 A EP00953171 A EP 00953171A EP 00953171 A EP00953171 A EP 00953171A EP 1208344 B1 EP1208344 B1 EP 1208344B1
Authority
EP
European Patent Office
Prior art keywords
heating element
fluoroplastic
heat exchanger
regenerative heat
enamelled
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 - Lifetime
Application number
EP00953171A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1208344A1 (de
Inventor
Hermann MÜLLER-ODENWALD
Friedrich Weyland
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.)
Alstom SA
Original Assignee
Alstom SA
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 Alstom SA filed Critical Alstom SA
Publication of EP1208344A1 publication Critical patent/EP1208344A1/de
Application granted granted Critical
Publication of EP1208344B1 publication Critical patent/EP1208344B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • 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
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
    • F28D19/042—Rotors; Assemblies of heat absorbing masses
    • F28D19/044—Rotors; Assemblies of heat absorbing masses shaped in sector form, e.g. with baskets
    • 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
    • Y10S165/905—Materials of manufacture
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49357—Regenerator or recuperator making
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31645—Next to addition polymer from unsaturated monomers
    • Y10T428/31649—Ester, halide or nitrile of addition polymer

Definitions

  • the invention relates to a profiled steel sheet designed as a heating element for a A regenerative heat exchanger.
  • Such heating elements are well known.
  • the storage mass of the regenerative heat exchanger The heat transfer required storage mass is when used in corrosive and / or dusty Gas streams subjected to special operational demands. This is true Example of the storage mass on the cold side of air preheaters to where the Temperature of the storage mass at least temporarily below the sulfuric acid dew point and forms corrosive deposits in connection with flue dust.
  • gas preheaters for reheating of clean gases from flue gas scrubbers where in addition to acid and dust sorbents or neutralizers and products deposit the flue gas cleaning system on the heating surfaces, similar problems occur on.
  • the storage mass must therefore be sufficiently resistant to corrosion and the deposits should be as easy as possible to clean off by blowing or rinsing.
  • For such applications are storage masses of enameled sheet steel profiles or storage materials become known from plastic (DE 32 07 213 C2).
  • Enamelled steel sheets have the disadvantage that enamel against acids such Sulfuric acid and hydrochloric acid is relatively well resistant, against those in flue gases too occurring hydrofluoric acid but is unstable and also a basic attack to Example by precipitation of neutralizing agents (additives or sorbents) for binding acidic gases, does not resist long enough and covers because of the relative good wettability of enamel more or less firmly adhere.
  • Memory material off inexpensive plastic has proven only conditionally. In consequence of the complex stress (Thermal cycling, chemical attack) embrittles the Material too fast and will be damaged. Because of the relatively low mechanical strength Also, plastic storage media can not work with the usual blas- or Flushing pressures are cleaned. Another disadvantage is the low heat storage capacity and thermal conductivity of plastics, resulting in the use of plastics as storage material is thermally unfavorable and by larger storage masses must be compensated.
  • PTFE fluoroplastic
  • a layer thickness of 10 to 50 microns is chosen because about up to this Layer thickness, the PTFE can be applied in one operation.
  • the enamel layer is in acid-resistant form executed.
  • a thin layer of fluoroplastic from For example, 10 to 50 microns thickness without special pretreatment of the enamel surface sufficiently well on the email liable.
  • the fluoroplastic coating can be built up in one or more layers become.
  • the enameled and fluoroplastic coated heating element profiles can be on especially economical way to represent a storage mass that is corrosion resistant and dirt-repellent and no thermotechnical and constructive disadvantages or with regard to the mode of operation, since those relating to heat exchange, Pressure loss and mechanical stability optimized and proven sheet steel profiles can be used and the thin fluoroplastic layer, the heat transfer performance only insignificantly (practically not) influenced.
  • Another Advantage of the inventive method is that the fluoroplastic coating with the for enamelling of Schublechen usual facilities can be done and thus for the production no additional equipment and facilities are necessary.
  • the dirt-repellent property of the inventive Schuelementprofile reduced or even completely prevents the build-up of pressure loss increasing dirt layers on the profiles. This brings operational benefits, because then the intervals for the necessary to achieve the maximum allowable pressure loss cleaning the Storage mass can be extended and thus smaller amounts of wastewater attack. If deposits are formed anyway, they will adhere less to fluoroplastic firmly and can be with less blowing or rinsing pressure / and therefore with lower Clean quantities of blowing medium and rinse water.
  • the lowest possible flue gas outlet temperature (temperature of the flue gas after flowing through the heat exchanger) and therefore also the lowest possible cold end temperature of the heat exchanger is sought in air preheaters.
  • dusty flue gases were previously set because of too fast formation of deposits and poor cleanability limits.
  • inventive dirt-repellent Schublechprofilen a deposit formation is prevented at extreme dew point below or it is at least better controllable, which ultimately allows a better reduction of the flue gas temperature.
  • a lower flue gas temperature means a higher boiler efficiency and thus a lower CO 2 emission and the downstream of the air preheater plants (electrostatic precipitator, flue gas cleaning system) can be built smaller.
  • SCR-De NOx Nitrogen oxides
  • a heating element consists of a steel sheet, which after its profiling by Degreasing or pickling is prepared for enameling. After enamelling with an acid-resistant enamel is without pretreatment of enamelled surface the fluoroplastic (eg PTFE) in a layer thickness of 10 to 50 microns, for example by spraying, applied, dried and tempered.
  • the Adhesive force can be a roughening of the before applying the fluoroplastic coating Enamel surface, for example, by light sandblasting, pickling with hydrofluoric acid or a base done.
  • the coating can be applied in one or more layers. After a preferred Embodiment will be particularly good on the enamel without pretreatment adhering fluoropolymer primer and then applied a fluoropolymer topcoat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Resistance Heating (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP00953171A 1999-08-27 2000-08-17 Heizelement für einen regenerativ-wärmetauscher und verfahren zum herstellen eines heizelementes Expired - Lifetime EP1208344B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19940627 1999-08-27
DE19940627A DE19940627A1 (de) 1999-08-27 1999-08-27 Heizelement für einen Regenerativ-Wärmetauscher und Verfahren zum Herstellen eines Heizelementes
PCT/EP2000/008018 WO2001016545A1 (de) 1999-08-27 2000-08-17 Heizelement für einen regenerativ-wärmetauscher und verfahren zum herstellen eines heizelementes

Publications (2)

Publication Number Publication Date
EP1208344A1 EP1208344A1 (de) 2002-05-29
EP1208344B1 true EP1208344B1 (de) 2003-02-19

Family

ID=7919765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00953171A Expired - Lifetime EP1208344B1 (de) 1999-08-27 2000-08-17 Heizelement für einen regenerativ-wärmetauscher und verfahren zum herstellen eines heizelementes

Country Status (19)

Country Link
US (1) US6648061B2 (tr)
EP (1) EP1208344B1 (tr)
JP (1) JP2003508715A (tr)
KR (1) KR100632452B1 (tr)
CN (1) CN1148561C (tr)
AT (1) ATE232965T1 (tr)
AU (1) AU6571100A (tr)
BR (1) BR0013580A (tr)
CA (1) CA2391837C (tr)
CZ (1) CZ293669B6 (tr)
DE (2) DE19940627A1 (tr)
DK (1) DK1208344T3 (tr)
ES (1) ES2190981T3 (tr)
IL (1) IL148160A0 (tr)
MX (1) MXPA02001209A (tr)
PL (1) PL195191B1 (tr)
TR (1) TR200200481T2 (tr)
TW (1) TW448287B (tr)
WO (1) WO2001016545A1 (tr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10320462B3 (de) * 2003-05-08 2005-03-03 Alstom Power Energy Recovery Gmbh Heizelement für einen Regenerativ-Wärmetauscher und Verfahren zum Herstellen eines Heizelementes
DE102004023027A1 (de) * 2004-05-06 2005-12-08 Babcock Borsig Service Gmbh Verfahren zum Korrosionsschutz eines Wärmetauscheteils und Wärmetauscherteil
JP4464796B2 (ja) * 2004-11-15 2010-05-19 日立アプライアンス株式会社 熱交換器及びその製造方法
DE102008030733A1 (de) 2008-06-27 2009-12-31 Munters Euroform Gmbh Plattenpaket für Kaltendlage
DE102009006855A1 (de) 2008-11-04 2010-05-06 Munters Euroform Gmbh Plattenpaket für Kaltendlage
DE102009008593A1 (de) * 2009-02-12 2010-08-19 Robert Bosch Gmbh Wärmetauscher
DE102012203278A1 (de) 2012-03-01 2013-09-05 Sgl Carbon Se Rotationswärmetauscher mit Wärmetauscherplatten oder Wärmetauscherrohren aus Kohle- und Graphitwerkstoffen
CN108444131A (zh) * 2018-04-09 2018-08-24 杨厚成 一种用于声能制冷机的回热器及其制造方法、声能制冷机及工作过程

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4250215A (en) * 1979-02-26 1981-02-10 General Housewares Corp. Cooking utensil with non-stick cooking surface
JPS57155096A (en) * 1981-03-20 1982-09-25 Gadelius Kk Multipipe type heat exchanger
DE3207213C3 (de) 1982-02-27 1995-03-23 Kraftanlagen Ag Speicherblock aus Kunststoff für Wärmeübertragung zwischen Gasströmen in Wärmetauschern
JPS60134199A (ja) * 1983-12-23 1985-07-17 Matsushita Electric Ind Co Ltd 熱交換器
JPH0612217B2 (ja) * 1985-04-30 1994-02-16 日本電装株式会社 アルミニウム製熱交換器およびその製法
JPS63291670A (ja) * 1988-04-28 1988-11-29 Gadelius Kk 熱交換器用伝熱管の製造方法
US5200241A (en) * 1989-05-18 1993-04-06 General Electric Company Metal-ceramic structure with intermediate high temperature reaction barrier layer
US5036903A (en) * 1989-11-08 1991-08-06 United Mcgill Corporation Graphite tube condensing heat exchanger and method of operating same
DE4122949A1 (de) * 1991-07-11 1993-01-14 Rothemuehle Brandt Kritzler Heizblechpaket fuer regenerative waermetauscher sowie verfahren und vorrichtung zur herstellung von profilblechen fuer solche heizblechpakete
DE4309844C2 (de) * 1993-03-26 1998-11-05 Krc Umwelttechnik Gmbh Verfahren zur Herstellung eines Rohrbündel-Wärmetauschers für Rauchgase
DE19512351C1 (de) 1995-04-01 1996-11-14 Poehlmann Klaus Ernst Wabenblock aus wärmebeständigem Speichermaterial für Wärmetauscher
DE19528634A1 (de) * 1995-08-04 1997-02-06 Rothemuehle Brandt Kritzler Heizblechpaket für Regenerativ-Wärmetauscher

Also Published As

Publication number Publication date
EP1208344A1 (de) 2002-05-29
WO2001016545A1 (de) 2001-03-08
DE19940627A1 (de) 2001-03-01
ATE232965T1 (de) 2003-03-15
IL148160A0 (en) 2002-09-12
DK1208344T3 (da) 2003-06-10
JP2003508715A (ja) 2003-03-04
CN1371465A (zh) 2002-09-25
AU6571100A (en) 2001-03-26
TR200200481T2 (tr) 2002-06-21
PL352370A1 (en) 2003-08-25
CN1148561C (zh) 2004-05-05
US6648061B2 (en) 2003-11-18
CZ2002584A3 (cs) 2002-09-11
TW448287B (en) 2001-08-01
CZ293669B6 (cs) 2004-06-16
PL195191B1 (pl) 2007-08-31
KR100632452B1 (ko) 2006-10-09
ES2190981T3 (es) 2003-09-01
MXPA02001209A (es) 2004-10-15
US20020108245A1 (en) 2002-08-15
CA2391837C (en) 2007-06-26
KR20020053805A (ko) 2002-07-05
CA2391837A1 (en) 2001-03-08
BR0013580A (pt) 2002-04-30
DE50001304D1 (de) 2003-03-27

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