EP0956490B1 - Wärmespeicherblock für regenerative wärmetauscher - Google Patents

Wärmespeicherblock für regenerative wärmetauscher Download PDF

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Publication number
EP0956490B1
EP0956490B1 EP97953811A EP97953811A EP0956490B1 EP 0956490 B1 EP0956490 B1 EP 0956490B1 EP 97953811 A EP97953811 A EP 97953811A EP 97953811 A EP97953811 A EP 97953811A EP 0956490 B1 EP0956490 B1 EP 0956490B1
Authority
EP
European Patent Office
Prior art keywords
protective plates
spacers
plates
heat storage
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.)
Expired - Lifetime
Application number
EP97953811A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0956490A1 (de
Inventor
Bernd Bolle
Lothar STÜFCHEN
Franz-Josef Hagemann
Bernd Hewing
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.)
Steag Energy Services GmbH
Brentwood Europe GmbH
Original Assignee
2H Kunststoff GmbH
Steag Encotec 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 2H Kunststoff GmbH, Steag Encotec GmbH filed Critical 2H Kunststoff GmbH
Publication of EP0956490A1 publication Critical patent/EP0956490A1/de
Application granted granted Critical
Publication of EP0956490B1 publication Critical patent/EP0956490B1/de
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
    • 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
    • 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
    • F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters

Definitions

  • the invention relates to a heat storage block for regenerative Heat exchanger with a plurality of heat exchanger plates, which are essential for the formation of flow channels are arranged parallel to each other, and a dirt trap for heat storage blocks of regenerative heat exchangers.
  • Heat storage blocks of this type usually have the Form of pie pieces and together form a rotor that crosses two zones in its circulation. In the first zone a hot medium is applied to it, which is heat to the heat exchanger plates. In the second zone it flows through a cold medium to which the previous stored heat is released.
  • the heat exchanger plates are generally made of steel and are for increasing their corrosion resistance is coated with enamel.
  • Regenerative heat exchangers are preferably used to Heat from a hot gas stream towards a cold gas stream transfer.
  • a key area of application is flue gas cleaning, for example in power plants and waste incineration plants, the flue gas in a flue gas desulfurization plant (REA) is washed. Before it is cooled, giving off its heat to the regenerative heat exchanger. Then reheating takes place using the heat stored in the heat exchanger.
  • REA flue gas desulfurization plant
  • the dew point is usually the the condensables contained in the flue gas are below. These sit on the heat exchanger plates of the heat storage blocks and form deposits there. Further is the cold gas coming from the REA to a certain extent Load liquid droplets and solid particles that also settle on the plates and the deposit effect reinforce.
  • the object of the invention is the service life to extend the heat storage blocks.
  • the invention is based on the knowledge that the deposits mainly in the flow from the cold medium Form area of the heat storage block, being essentially only a relatively short distance into the Extend the flow channels. Only falls below in this area the hot medium the dew point. For the cold Medium is the entry area with the highest Degree of pollution.
  • Mud flaps arranged. Its protective plates are practical no contribution to heat storage and transfer. It was found that the temperature difference at the Protection plates in the order of ⁇ 1 K. The Protection plates only provide the deposit area Available.
  • the extremely simple measure is sufficient the entry area of the protective plates free of spacers to let the buildup of the deposits so strongly delay that the time interval between the as multiplied before required cleaning processes. Accordingly the period between - also still required - exchange, whereby in the majority of cases, however, this only Strainer affects.
  • the cleaning medium strikes with reduced Balances on the spacers so that the ones to be included here Forces to a lesser extent tend to crack at the attachment points to evoke.
  • the protective plates are preferably made of elastic deformable plastic, especially made of polypropylene a thickness of 1 mm as this material is resistant to is chemical attacks and, other than for example ceramic Material, no relationship to the material of the Has deposits. It also favors due to its elastic Malleability the flaking of the deposits under the action of vibrations. Furthermore, installation voltages and thermal expansion is compensated for without the risk of cracking become.
  • the protective plates have a preferably wavy profile have, the ribs substantially in the direction of the flow channels. Thermal expansions have an effect under these circumstances, even cheap, because the evoked Movements support the flaking of the rubbers.
  • the spacers are advantageously in the form of small areas Bulges of the protective plates are formed. she are molded during the manufacture of the protective plates and enable very economical production in this way the strainer. They also only form a relative slight obstruction of the flow channels.
  • any spacer consists of a survey of one and a corresponding one Depression of the adjacent plate, being between the elevation and the deepening the fasteners are effective.
  • These can be of any design, for example as rivets or screws.
  • push-button connections in question.
  • joining processes apply such as welding or gluing.
  • the surveys and corresponding depressions the plate profiling arranged in a grid which is an establishment of the correspondence between neighboring protective plates by twisting one plate compared to the other by 180 ° in the plate plane. In this way, only a single plate structure needed.
  • the plates are in alternating orientation stacked and forming the spacers connected with each other.
  • the protective plates at least in the area of edges flowed from the cold medium conical projections have, the height of which is essentially the distance between adjacent protective plates.
  • the elastic Protective plates of the strainer are removed when cleaning flipped through like a deck of cards. Is a protective plate no longer under the influence of the cleaning medium, so she snaps back to her starting position, with the protrusions on the adjacent protective plate. These blows also promote flaking of the deposits.
  • the invention also provides a strainer for Heat storage blocks of regenerative heat exchangers, the Features emerge from the claims 9 to 16.
  • Fig. 1 shows a regenerative heat exchanger 1, the a flue gas desulfurization system, not shown (REA) is assigned.
  • the heat exchanger 1 has a rotor 2, which moves through two zones as it rotates. In the zone shown on the right, it is made from raw gas flowed through on the way to the REA.
  • the raw gas has a hot gas side a temperature of about 130 ° C and gives a part its heat to the rotor 2. It leaves the heat exchanger with a temperature of about 90 ° C.
  • the REA then cools down further to approx. 50 ° C.
  • the clean gas enters the left zone shown, flows through the rotor and takes some of the heat stored in the rotor. It leaves the heat exchanger with a temperature of around 90 ° C.
  • Cleaning devices 3 and 4 serve the rotor periodically cleaned.
  • the rotor consists of a plurality of pie-shaped Heat storage blocks 5, the cold gas side with dirt traps 6 are provided.
  • Each heat storage block has one Plurality of heat exchanger plates made from enamelled Steel sheet exist and are able to absorb heat, save and return.
  • the dirt traps 6 also exist, as shown in FIG. 2, from pie-shaped blocks 11, each of which is composed of a plurality of protective plates 12. These are with their lateral edges 13 (Fig. 3) on one Holding device 14 attached and form flow channels, which run perpendicular to the plane of the drawing in FIG. 2.
  • the protective plates 12 are spacers 15 (Fig. 4) kept at a distance from each other and to a stack of plates connected with each other.
  • a fastener in present case adhesive connections.
  • Each spacer 15 consists of an elevation 16 of a protective plate and a recess 17 of the neighboring Protective plate.
  • the surveys 16 and Wells 17 of each protective plate side by side in pairs arranged (Fig. 3).
  • the protective plates 12 consist of elastically deformable Plastic, namely made of polypropylene and can be used without Make another in the form shown. It can be worked with one and the same grid. Like Fig. 4 shows, adjacent protective plates 12 are of the same shape, however of alternating orientation, with neighboring ones Protection plates are rotated 180 ° against each other. Furthermore the protective plates have a profile, the Ribs 18 run parallel to the side edges 13.
  • the protective plates are made of elastically deformable polypropylene exist with a thickness of 1 mm, by Vibrations and movements due to thermal expansion support flaking of the deposits. Also compensate installation voltages.
  • the protective plates 12 are in the area of their edges flowed from the cold medium with conical projections 20 provided. If the protective plates vibrate hit these protrusions on neighboring protective plates and help to blow up the deposits.

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)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
EP97953811A 1996-12-19 1997-12-13 Wärmespeicherblock für regenerative wärmetauscher Expired - Lifetime EP0956490B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19652999 1996-12-19
DE19652999A DE19652999C2 (de) 1996-12-19 1996-12-19 Wärmespeicherblock für regenerative Wärmetauscher
PCT/EP1997/007016 WO1998027394A1 (de) 1996-12-19 1997-12-13 Wärmespeicherblock für regenerative wärmetauscher

Publications (2)

Publication Number Publication Date
EP0956490A1 EP0956490A1 (de) 1999-11-17
EP0956490B1 true EP0956490B1 (de) 2001-01-31

Family

ID=7815347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97953811A Expired - Lifetime EP0956490B1 (de) 1996-12-19 1997-12-13 Wärmespeicherblock für regenerative wärmetauscher

Country Status (6)

Country Link
US (1) US6145582A (da)
EP (1) EP0956490B1 (da)
AT (1) ATE199040T1 (da)
DE (2) DE19652999C2 (da)
DK (1) DK0956490T3 (da)
WO (1) WO1998027394A1 (da)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19832164C2 (de) * 1998-07-17 2002-12-05 Balcke Duerr Gmbh Plattenwärmetauscher
DE19910687C2 (de) * 1999-03-10 2001-03-01 Eisenmann Kg Maschbau Vorrichtung zur Reinigung verunreinigter Abgase aus industriellen Prozessen, insbesondere thermische Nachverbrennungsvorrichtung
US6237674B1 (en) * 2000-09-21 2001-05-29 Alstom Power N.V. Spoked support ring for air preheater housing
US6892795B1 (en) * 2000-10-04 2005-05-17 Airxchange, Inc. Embossed regenerator matrix for heat exchanger
US6439170B1 (en) * 2000-12-12 2002-08-27 Alstom Power N.V. Single seam duct corner
US6450245B1 (en) * 2001-10-24 2002-09-17 Alstom (Switzerland) Ltd. Air preheater heat transfer elements
DE10218912A1 (de) 2002-04-27 2003-11-06 Modine Mfg Co Gewellter Wärmetauschkörper
US6647929B1 (en) * 2003-03-07 2003-11-18 Alstom (Switzerland) Ltd System for increasing efficiency of steam generator system having a regenerative air preheater
DE10333177A1 (de) * 2003-07-22 2005-02-24 Modine Manufacturing Co., Racine Strömungskanal für einen Wärmeaustauscher
US6974318B2 (en) * 2004-04-05 2005-12-13 Dürr Environmental, Inc. Online bakeout of regenerative oxidizers
DE102006003317B4 (de) 2006-01-23 2008-10-02 Alstom Technology Ltd. Rohrbündel-Wärmetauscher
DE202007007169U1 (de) * 2007-05-16 2008-09-25 Akg-Thermotechnik Gmbh & Co. Kg Wärmeaustauscher für gasförmige Medien
US9557119B2 (en) 2009-05-08 2017-01-31 Arvos Inc. Heat transfer sheet for rotary regenerative heat exchanger
US8622115B2 (en) * 2009-08-19 2014-01-07 Alstom Technology Ltd Heat transfer element for a rotary regenerative heat exchanger
FR2959763B3 (fr) * 2010-05-07 2012-06-01 Energy Harvesting Tech Ensemble sanitaire a recuperation d'energie thermique
US9200853B2 (en) 2012-08-23 2015-12-01 Arvos Technology Limited Heat transfer assembly for rotary regenerative preheater
DE102012022046A1 (de) * 2012-11-09 2014-05-15 Modine Manufacturing Co. Wärmetauscher
MX368708B (es) * 2013-09-19 2019-10-11 Howden Uk Ltd Perfil de elemento de intercambio de calor con caracteristicas de capacidad de limpieza mejoradas.
US10175006B2 (en) 2013-11-25 2019-01-08 Arvos Ljungstrom Llc Heat transfer elements for a closed channel rotary regenerative air preheater
US10094626B2 (en) 2015-10-07 2018-10-09 Arvos Ljungstrom Llc Alternating notch configuration for spacing heat transfer sheets
US10837714B2 (en) * 2017-06-29 2020-11-17 Howden Uk Limited Heat transfer elements for rotary heat exchangers

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651862A (en) * 1969-04-11 1972-03-28 Robert G Ballinger Mechanical heat exchanging apparatus
US4200441A (en) * 1976-06-29 1980-04-29 Ltg Lufttechnische Gmbh Regenerative heat exchanger
DE3240598A1 (de) * 1981-11-03 1983-06-09 Northern Solar Systems, Inc., Hingham, Mass. Rotierendes waerme-rueckgewinnungs-geraet
DE3236054C2 (de) * 1982-09-29 1987-01-15 Vladimir Ivanovič Čeljabinsk Dombrovskij Einrichtung zur Luftvorwärmung durch Rauchgase in Dampfkesseln und Öfen
DE3436802A1 (de) * 1983-04-09 1986-04-10 Saarbergwerke AG, 6600 Saarbrücken Regeneratives waermeuebertragungssystem
DE3424159A1 (de) * 1984-06-30 1986-01-23 Balcke-Dürr AG, 4030 Ratingen Regenerativ-waermeaustauscher
US4903756A (en) * 1985-06-26 1990-02-27 Monro Richard J Heat generator
JPS62258894A (ja) * 1986-05-02 1987-11-11 江越　治 航空機着陸時の車輪摩擦減少装置
JPS62258994A (ja) * 1986-05-02 1987-11-11 Asahi Glass Co Ltd 回転再生式熱交換器
US4744410A (en) * 1987-02-24 1988-05-17 The Air Preheater Company, Inc. Heat transfer element assembly
US5915340A (en) * 1996-10-02 1999-06-29 Abb Air Preheater Inc. Variable sector plate quad sector air preheater
US5836379A (en) * 1996-11-22 1998-11-17 Abb Air Preheater, Inc. Air preheater heat transfer surface
US5979050A (en) * 1997-06-13 1999-11-09 Abb Air Preheater, Inc. Air preheater heat transfer elements and method of manufacture
US5899261A (en) * 1997-09-15 1999-05-04 Abb Air Preheater, Inc. Air preheater heat transfer surface
US6068045A (en) * 1999-08-26 2000-05-30 Abb Air Preheater, Inc. Rotor construction for air preheater

Also Published As

Publication number Publication date
US6145582A (en) 2000-11-14
ATE199040T1 (de) 2001-02-15
DE19652999A1 (de) 1998-06-25
EP0956490A1 (de) 1999-11-17
WO1998027394A1 (de) 1998-06-25
DK0956490T3 (da) 2001-06-11
DE59702983D1 (de) 2001-03-08
DE19652999C2 (de) 1999-06-24

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