EP0588185A1 - Echangeur de chaleur à régénération et procédé pour actionner l'échangeur de chaleur - Google Patents

Echangeur de chaleur à régénération et procédé pour actionner l'échangeur de chaleur Download PDF

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Publication number
EP0588185A1
EP0588185A1 EP93114189A EP93114189A EP0588185A1 EP 0588185 A1 EP0588185 A1 EP 0588185A1 EP 93114189 A EP93114189 A EP 93114189A EP 93114189 A EP93114189 A EP 93114189A EP 0588185 A1 EP0588185 A1 EP 0588185A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
regenerative heat
chambers
rotor
seals
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
EP93114189A
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German (de)
English (en)
Other versions
EP0588185B1 (fr
Inventor
Gerhard Dipl.Ing. Kritzler
Siegfried Dipl. Ing. Schlüter
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.)
Apparatebau Rothemuehle Brandt and Kritzler GmbH
Original Assignee
Apparatebau Rothemuehle Brandt and Kritzler 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 Apparatebau Rothemuehle Brandt and Kritzler GmbH filed Critical Apparatebau Rothemuehle Brandt and Kritzler GmbH
Publication of EP0588185A1 publication Critical patent/EP0588185A1/fr
Application granted granted Critical
Publication of EP0588185B1 publication Critical patent/EP0588185B1/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
    • 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
    • F28D19/047—Sealing means

Definitions

  • the invention relates to a method for operating a regenerative heat exchanger and a regenerative heat exchanger which has a rotating rotor which has radially and axially sealed storage masses.
  • the regenerative heat exchanger can be used for both air preheaters (Luvos) and gas preheaters (Gavos).
  • the exhaust gases are used in a regenerative heat exchanger to preheat the combustion air.
  • the nitrogen oxides (NOx) contained in the exhaust gas can be largely reduced by, in this case, the storage masses of the regenerative air preheater being designed in whole or in part as catalytically active elements and, above all, ammonia being added as a reducing agent.
  • the NOx-containing exhaust gas is the flue gas from a furnace that flows through the regenerative heat exchanger at the end of a steam generator to preheat the combustion air.
  • the invention is therefore based on the object of providing a method and a device which, in the case of a regenerative heat exchanger of the type mentioned at the outset, permit a high degree of tightness and largely prevent leakages.
  • the housing surrounding the rotor peripherally and the separation zones arranged radially between the heat-exchanging media are designed as barrier chambers (peripheral or radial chambers).
  • barrier chambers peripheral or radial chambers
  • peripheral seals arranged on the cold and hot end faces on the outer circumference of the rotor preferably designed as sealing strips with a length corresponding to the radian dimension of at least two storage mass chambers, delimit the peripheral chambers.
  • the radial seals arranged on both sides of the rotor in the separation zones fully cover at least one storage mass chamber.
  • the radial seals are thus adapted to the dimensions or the contour of a rotor chamber. While segmented, but essentially axially lying ring segments can be provided for the end circumferential seals, the radial seals are essentially strip-like, with a course widening at their outer ends; After placing the circumferential seals, the radial seals can be inserted flush between them. It can thus be achieved in an advantageous manner that the circumferential and the radial seals form a sealing surface lying in a common plane, seamlessly continuous at the joints or merging into one another.
  • the circumferential and radial seals are made elastic.
  • the seals are designed as axially lying, wide sealing strips, which easily adapt to the operational thermal expansion of the rotor. As is known, they are set fully automatically according to the respective operating state via a sensor control. Due to the elastic, resilient arrangement of the seals, the rotor can not block in the housing with larger temperature differences, as well as in the event of a malfunction, e.g. when the motor is at a standstill, possibly one-sided deformations cannot lead to blocking, so that the rotor can move out of any operating position can start again at any time.
  • An embodiment of the invention provides that the peripheral chambers are divided, i.e. have a rear and a front chamber in a regenerative heat exchanger with a vertical axis of rotation and a lower and in a regenerative heat exchanger with a horizontal axis of rotation.
  • cylindrical seals are placed around the rotor for subdivision.
  • the subdivided circumferential chambers advantageously allow the regenerative heat exchanger to be operated in such a way that it can be aspirated, blocked, blown out or sucked out at the respective sealing points in a targeted and appropriate manner in accordance with the local pressure conditions in the heat exchanger.
  • circumferential chambers that are not subdivided.
  • the double seals achieved radially according to the invention advantageously make it possible to connect either a suction device, for example a fan, or a sealing gas line to the blocking chambers and thus either generate a negative or positive pressure, and to connect a flushing gas line to the radial chambers.
  • a suction device for example a fan
  • a sealing gas line to the blocking chambers and thus either generate a negative or positive pressure
  • a flushing gas line to the radial chambers.
  • This offers the possibility of gap leaks in regenerative heat exchangers simple way to avoid partially or completely, for example by extraction or supply of sealing gas.
  • wear losses due to blowing can be minimized over the relevant radial areas.
  • each flushing process it is additionally achieved that each storage mass cell or chamber coming from the polluted raw gas sector is flushed with clean gas in the area of the radial double seal before it enters the clean gas sector.
  • All rotor seals can be fitted tightly to the rotor faces according to the respective operating conditions using mechanical devices.
  • the adjustments can be made manually or automatically; larger areas of the circumferential seals, whose radians should correspond to at least the arc length of two storage mass chambers, can be determined from individual actuation points.
  • levers can be used that extend from the actuation points to the individual connection points on the seals. The number of actuators can be reduced in this way. So that the actuation and pressure forces of the seals are as low as possible, the weights of the sealing plates or rings are balanced by counterweights via the existing lever linkage. Compared to adjusting springs, counterweights have the advantage that the reaction forces remain constant even with different sealing positions.
  • the regenerative heat exchanger 1 according to FIG. 1 has a rotor 3 rotating about a vertical axis of rotation 2, which has numerous storage mass cells or chambers 4 (cf. FIG. 2).
  • the regenerative heat exchanger 1 is turned in the direction of the arrow 5, i.e. from top to bottom of hot exhaust gas supplied by a steam generator, not shown, through a channel, while in countercurrent according to the direction of the arrow 6, clean gas or air is supplied to the storage mass chambers 4 heated by the exhaust gas.
  • the clean gas or air cools the storage mass chambers 4 and flows upwards, i.e. on the hot side 7 out of the heat exchanger 1.
  • ring-like circumferential seals 9 are placed on the rotor 3 on its outer circumference or edge, which are divided into segments and have an arc length 11 which correspond to a multiple of the arc length of a storage mass chamber 4 ( see Fig. 2);
  • the peripheral seals 9 consist of four quarter-circle rings closely joined at the joints.
  • the peripheral seals 9 create blocking or peripheral chambers 13 in the area between the housing 12 axially enclosing the rotor 3 and the rotor 3.
  • radial chambers 15 are formed in the separation zones 14 separating the two media streams 5 and 6 from one another, in that radial seals 16 are placed on the rotor 3 at the top and bottom in these zones; the radial seals 16 are essentially strip-shaped, with widening ends and are dimensioned such that they completely cover a storage mass chamber 4.
  • the media 5 or 6 flowing through the regenerative heat exchanger 1 in countercurrent are on each end face of the rotor, i.e. completely sealed on the hot as well as on the cold side 7 and 8; double seals are thus present in the heat exchanger in the radial extent of the rotor 3.
  • the radial seals 16 are dimensioned such that they can be fitted into the peripheral seals 9, bridging the diameter of the peripheral seals 9. All sealing surfaces resulting from the circumferential seals 9 and the radial seals 16 lie in one plane, i.e. there is no offset between them; in addition, they have no penetrations of drive and other actuating elements.
  • the circumferential seals 9 and the radial seals 16 are elastic, that is to say made resilient or pressed against the rotor.
  • An actuation point 17 is assigned to a larger area of the circumferential seals 9, from which levers 18 extend to the seals. It is thus possible to influence the entire circumferential seals 9 as far as necessary from a few actuation points 17.
  • adjusting springs 19 are arranged on the closed radial chambers 15 formed in the separation zones 14.
  • the peripheral chambers 13 are divided into an upper and a lower chamber 13a, 13b by an annular seal 21 placed around the jacket of the rotor 3.
  • a supply line 22 for an upper suction or extraction is arranged on the upper chamber 13a and a supply line 23 for a lower suction or extraction is arranged on the lower chamber 13b; the supply lines are used to minimize or prevent leakage.
  • the circumferential chambers 13 or 13a, 13b and the radial chambers 15 can namely be sucked off together or separately by a separate fan and thus kept at a negative pressure, or in the opposite way pressurized with purge or purge gas and brought to an excess pressure.
  • a leakage extraction for the barrier chamber and sealing system is shown in more detail; it consists of pipe connections 24, 25, via which a fan (not shown) in the direction of arrow 26 extracts leakages from the circumferential chamber 13, which in this case is not divided, and the lower radial chamber 15.
  • the regenerative heat exchanger 200 shown in FIG. 4 differs from the embodiment according to FIG. 3 essentially only in that, via the pipe connections 24 and 25 in the opposite direction, that is to say according to the arrows 27, sealing or flushing gas into the peripheral chamber 13 or radial chamber 15 is introduced.
  • a pipeline 28 is also connected to the upper radial chamber 15, via which the introduced sealing or flushing gas can escape to the outside again after flowing through the sealing chamber and sealing system.

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)
  • Air Supply (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Power Steering Mechanism (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Polarising Elements (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Vending Machines For Individual Products (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Bags (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP93114189A 1992-09-09 1993-09-04 Echangeur de chaleur à régénération Expired - Lifetime EP0588185B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4230133 1992-09-09
DE4230133A DE4230133A1 (de) 1992-09-09 1992-09-09 Regenerativ-Wärmetauscher und Verfahren zum Betreiben des Wärmetauschers

Publications (2)

Publication Number Publication Date
EP0588185A1 true EP0588185A1 (fr) 1994-03-23
EP0588185B1 EP0588185B1 (fr) 1998-01-07

Family

ID=6467590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114189A Expired - Lifetime EP0588185B1 (fr) 1992-09-09 1993-09-04 Echangeur de chaleur à régénération

Country Status (15)

Country Link
EP (1) EP0588185B1 (fr)
JP (1) JPH0712477A (fr)
AT (1) ATE161942T1 (fr)
AU (1) AU667385B2 (fr)
BR (1) BR9303726A (fr)
CZ (1) CZ291069B6 (fr)
DE (2) DE4230133A1 (fr)
DK (1) DK0588185T3 (fr)
ES (1) ES2113457T3 (fr)
HU (1) HUT65211A (fr)
MX (1) MX9305497A (fr)
PL (2) PL300234A1 (fr)
RU (1) RU2119127C1 (fr)
UA (1) UA35561C2 (fr)
ZA (1) ZA936296B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004111563A1 (fr) * 2003-06-13 2004-12-23 Klingenburg Gmbh Echangeur thermique rotatif et procede pour rendre etanche un tel echangeur thermique
WO2006120371A1 (fr) * 2005-03-22 2006-11-16 Howden Uk Limited Echangeur thermique rotatif et procede de reduction des fuites dans un echangeur thermique rotatif
EP2177855A1 (fr) 2008-10-14 2010-04-21 Balcke-Dürr GmbH Echangeur thermique régénératif doté d'un joint périphérique d'un nouveau type
EP2199724A1 (fr) 2008-12-17 2010-06-23 Balcke-Dürr GmbH Procédé destiné au fonctionnement d'un échangeur thermique régénératif et échangeur thermique régénératif doté d'une efficacité améliorée
DE102016011918A1 (de) * 2016-10-05 2018-04-05 Balcke-Dürr GmbH Regenerativer Wärmetauscher

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5915340A (en) * 1996-10-02 1999-06-29 Abb Air Preheater Inc. Variable sector plate quad sector air preheater
JP3611272B2 (ja) * 1997-12-19 2005-01-19 三菱重工業株式会社 回転再生式熱交換器
DE102005053378B4 (de) * 2005-11-07 2011-12-08 Rwe Power Ag Rotierender regenerativer Luft-oder Gasvorwärmer
US8517086B2 (en) * 2008-02-29 2013-08-27 Caterpillar Inc. Composite heat exchanger end structure
CN102200408B (zh) * 2011-07-09 2012-11-07 程爱平 回转式气气换热器无泄漏密封系统隔离风幕结构
EP2743624A1 (fr) * 2012-12-14 2014-06-18 Alstom Technology Ltd Système de réduction de fuite dans des opérations de centrale électrique
ES2450041B1 (es) * 2013-11-18 2015-02-11 Juan MARTÍNEZ-VAL PIERA Sellado de huelgo por recirculación parcial de fluido en intercambiador rotativo de calor
RU2716636C1 (ru) * 2019-07-05 2020-03-13 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Способ компенсации деформации высокотемпературного вращающегося дискового теплообменника
RU2716639C1 (ru) * 2019-07-05 2020-03-13 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Высокотемпературный вращающийся дисковый теплообменник
RU2716640C1 (ru) * 2019-07-05 2020-03-13 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Силиконовые уплотнения высокотемпературного вращающегося дискового теплообменника
RU2716638C1 (ru) * 2019-07-05 2020-03-13 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Способ предотвращения деформации высокотемпературного вращающегося дискового теплообменника
RU202881U1 (ru) * 2020-08-11 2021-03-11 Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") Устройство охлаждения каркаса роторного дискового теплообменника энергетической установки

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2665120A (en) * 1950-08-09 1954-01-05 Blomquist Uno Olof Regenerative heat exchanger
FR1088412A (fr) * 1952-09-06 1955-03-07 Svenska Rotor Maskiner Ab Pré-chauffeurs rotatifs
FR1168896A (fr) * 1956-03-15 1958-12-18 Babcock & Wilcox France Réchauffeur rotatif pour gaz, air et analogues
DE1093392B (de) * 1957-01-31 1960-11-24 Kraftanlagen Ag Regenerativ-Waermeaustauscher mit Schleusgas-Rueckfuehrung
FR1402853A (fr) * 1962-11-23 1965-06-18 Svenska Rotor Maskiner Ab échangeur régénérateur de chaleur rotatif
FR1447765A (fr) * 1965-09-23 1966-07-29 Podolsky Mashinostroitelny Zd Dispositif d'étanchéité du rotor des réchauffeurs d'air à régénération
DE1266435B (de) * 1963-04-01 1968-04-18 Kraftanlagen Ag Rauchgasbeheizter umlaufender Regenerativ-Luftvorwaermer mit Reinigungsvorrichtung
FR2216538A1 (fr) * 1973-02-02 1974-08-30 Svenska Rotor Maskiner Ab
FR2337866A1 (fr) * 1976-01-08 1977-08-05 Svenska Rotor Maskiner Ab Joint d'etancheite pour un echangeur de chaleur
FR2419488A1 (fr) * 1978-03-08 1979-10-05 Svenska Rotor Maskiner Ab Dispositif de compensation pour assurer l'etancheite d'echangeurs de chaleur rotatifs a regeneration
DE3437945A1 (de) * 1984-10-17 1986-04-17 Kraftanlagen Ag, 6900 Heidelberg Verfahren und einrichtung fuer ein unterbinden des uebertritts von leckgasstroemen aus dem sektor des waermetauschenden gasstromes hoeheren druckes in denjenigen niedrigeren druckes in umlaufenden regenerativ-waermetauschern mit relativ zu den anschlusskanaelen bewegter speichermasse

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681209A (en) * 1949-02-09 1954-06-15 Jarvis C Marble Suction device for rotary regenerative preheaters

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2665120A (en) * 1950-08-09 1954-01-05 Blomquist Uno Olof Regenerative heat exchanger
FR1088412A (fr) * 1952-09-06 1955-03-07 Svenska Rotor Maskiner Ab Pré-chauffeurs rotatifs
FR1168896A (fr) * 1956-03-15 1958-12-18 Babcock & Wilcox France Réchauffeur rotatif pour gaz, air et analogues
DE1093392B (de) * 1957-01-31 1960-11-24 Kraftanlagen Ag Regenerativ-Waermeaustauscher mit Schleusgas-Rueckfuehrung
FR1402853A (fr) * 1962-11-23 1965-06-18 Svenska Rotor Maskiner Ab échangeur régénérateur de chaleur rotatif
DE1266435B (de) * 1963-04-01 1968-04-18 Kraftanlagen Ag Rauchgasbeheizter umlaufender Regenerativ-Luftvorwaermer mit Reinigungsvorrichtung
FR1447765A (fr) * 1965-09-23 1966-07-29 Podolsky Mashinostroitelny Zd Dispositif d'étanchéité du rotor des réchauffeurs d'air à régénération
FR2216538A1 (fr) * 1973-02-02 1974-08-30 Svenska Rotor Maskiner Ab
FR2337866A1 (fr) * 1976-01-08 1977-08-05 Svenska Rotor Maskiner Ab Joint d'etancheite pour un echangeur de chaleur
FR2419488A1 (fr) * 1978-03-08 1979-10-05 Svenska Rotor Maskiner Ab Dispositif de compensation pour assurer l'etancheite d'echangeurs de chaleur rotatifs a regeneration
DE3437945A1 (de) * 1984-10-17 1986-04-17 Kraftanlagen Ag, 6900 Heidelberg Verfahren und einrichtung fuer ein unterbinden des uebertritts von leckgasstroemen aus dem sektor des waermetauschenden gasstromes hoeheren druckes in denjenigen niedrigeren druckes in umlaufenden regenerativ-waermetauschern mit relativ zu den anschlusskanaelen bewegter speichermasse

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004111563A1 (fr) * 2003-06-13 2004-12-23 Klingenburg Gmbh Echangeur thermique rotatif et procede pour rendre etanche un tel echangeur thermique
WO2006120371A1 (fr) * 2005-03-22 2006-11-16 Howden Uk Limited Echangeur thermique rotatif et procede de reduction des fuites dans un echangeur thermique rotatif
EP2177855A1 (fr) 2008-10-14 2010-04-21 Balcke-Dürr GmbH Echangeur thermique régénératif doté d'un joint périphérique d'un nouveau type
EP2199724A1 (fr) 2008-12-17 2010-06-23 Balcke-Dürr GmbH Procédé destiné au fonctionnement d'un échangeur thermique régénératif et échangeur thermique régénératif doté d'une efficacité améliorée
DE102016011918A1 (de) * 2016-10-05 2018-04-05 Balcke-Dürr GmbH Regenerativer Wärmetauscher
DE102016011918B4 (de) 2016-10-05 2018-05-30 Balcke-Dürr GmbH Regenerativer Wärmetauscher

Also Published As

Publication number Publication date
PL300234A1 (en) 1994-03-21
AU667385B2 (en) 1996-03-21
DE4230133A1 (de) 1994-03-10
PL56220Y1 (en) 1998-07-31
JPH0712477A (ja) 1995-01-17
BR9303726A (pt) 1994-03-22
AU4463193A (en) 1994-03-17
ZA936296B (en) 1995-02-09
UA35561C2 (uk) 2001-04-16
RU2119127C1 (ru) 1998-09-20
EP0588185B1 (fr) 1998-01-07
HUT65211A (en) 1994-05-02
ES2113457T3 (es) 1998-05-01
DE59307922D1 (de) 1998-02-12
MX9305497A (es) 1994-05-31
CZ186493A3 (en) 1994-04-13
CZ291069B6 (cs) 2002-12-11
ATE161942T1 (de) 1998-01-15
HU9302529D0 (en) 1994-01-28
DK0588185T3 (da) 1998-09-07

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