EP2051033B1 - Regenerative heat exchanger - Google Patents

Regenerative heat exchanger Download PDF

Info

Publication number
EP2051033B1
EP2051033B1 EP07020309A EP07020309A EP2051033B1 EP 2051033 B1 EP2051033 B1 EP 2051033B1 EP 07020309 A EP07020309 A EP 07020309A EP 07020309 A EP07020309 A EP 07020309A EP 2051033 B1 EP2051033 B1 EP 2051033B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
buffer
regenerative heat
exchanger according
blowing
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.)
Active
Application number
EP07020309A
Other languages
German (de)
French (fr)
Other versions
EP2051033A1 (en
Inventor
Manfred Flender
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
Priority to SI200730218T priority Critical patent/SI2051033T1/en
Application filed by Balcke Duerr GmbH filed Critical Balcke Duerr GmbH
Priority to PT07020309T priority patent/PT2051033E/en
Priority to ES07020309T priority patent/ES2340329T3/en
Priority to EP07020309A priority patent/EP2051033B1/en
Priority to AT07020309T priority patent/ATE456777T1/en
Priority to DE502007002762T priority patent/DE502007002762D1/en
Priority to DK07020309.6T priority patent/DK2051033T3/en
Priority to PL07020309T priority patent/PL2051033T3/en
Priority to US12/245,561 priority patent/US8360137B2/en
Priority to SA8290647A priority patent/SA08290647B1/en
Priority to RU2008141205/06A priority patent/RU2395037C2/en
Priority to CN2008101705038A priority patent/CN101413770B/en
Publication of EP2051033A1 publication Critical patent/EP2051033A1/en
Priority to HK09109456.9A priority patent/HK1129922A1/en
Application granted granted Critical
Publication of EP2051033B1 publication Critical patent/EP2051033B1/en
Priority to CY20101100369T priority patent/CY1112373T1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • F28G9/005—Cleaning by flushing or washing, e.g. with chemical solvents of regenerative heat exchanger

Definitions

  • the invention relates to a regenerative heat exchanger for each other in the heat exchange gas flows, the heat exchange via a permanently immersed in all gas streams associated buffer takes place, which is cleaned by a spray nozzle at its free end, pivoting blowing arm, a bearing axis of the Blasarms parallel to Flow direction of the gas streams in the region of the buffer is arranged and penetrates with their imaginary extension of the buffer.
  • the invention is therefore based on the object to ensure reliable removal of impurities from the region of the buffer and thereby to allow the largest possible time interval between successive flushes.
  • This object is achieved in that two mirror images of the buffer memory arranged blowing arms are provided with at least one nozzle for compressed air and pressurized water.
  • the bearings of the blower arms are advantageously arranged encapsulated against the gas flows involved between the outer edge of the disc-shaped intermediate memory and its central axis. It is expediently the distance of the bearing from the outer edge of the buffer significantly smaller than the distance from the central axis and aligned while the bearings of the two blowing arms together.
  • This bearing arrangement leads to short blowing arms and thereby leads even at high pressures of compressed air and pressurized water even with not inconsiderable recoil forces on the nozzles only to well controllable bearing forces.
  • the supply channels for detergent to the nozzles are expediently arranged concentrically to one another and the blowing arms are gradually tapered in the direction of their free end.
  • an axially parallel to the flow direction of the gas flows angled part of the blowing arms used to guide them in two camps.
  • the bearings are advantageously designed as a rolling bearing and the maximum deflections of the blower arms lead their free ends to the outer and the inner edge of the buffer.
  • a frame 1 comprises a buffer store 2, which is mounted rotatably in the frame 1 via a shaft 3.
  • a housing 4 encloses the buffer 2 and is sealed over its entire circumference to the latter by sealing lips 5.
  • the part of the buffer 2 located on the left in the drawing is flowed through from below from below by a hot gas stream 6, so that in each case the portion of the buffer 2 lying in this part is heated up.
  • the buffer 2 is slowly rotated in a manner not shown in the direction of an arrow 7, so that the heated part of the buffer 2 slowly moves in the right in the drawing part of the housing 4.
  • This part of the housing 4 is passed from top to bottom of a cold gas stream 8, to which the buffer 2 emits the heat absorbed from the gas stream 6, so that the now heated gas stream 8, for example, as combustion air, a furnace can be supplied.
  • the cooled section of the buffer 2 continues to travel and again absorbs heat from the gas stream 6 in the left-hand part of the housing 4 and a new cycle of heat exchange begins.
  • the buffer 2 is substantially composed of parallel to the gas streams 6 and 8, not shown in detail, lamellae composed of a good heat-conducting material and sets the gas streams 6 and 8 only a very low resistance. Nevertheless, the buffer 2 is contaminated during operation, so that its heat absorption as well as its ability to give them back, is impaired. This results in the need to periodically clean the buffer 2 during operation.
  • blowing arms 9 are provided which are reciprocable with their free ends between the outer edge 10 and the inner edge 11 of the buffer 2 and herschwenkbar.
  • the blowing arms 9 carry nozzles 12.
  • two nozzle plates 12 are provided at the end of the inlet side for the gas flow 6 arranged blowing arm 9, each of which a low-pressure nozzle plate and high-pressure nozzle plate.
  • a low-pressure nozzle plate is suitable for steam, compressed air and water.
  • a high pressure nozzle plate is suitable for water.
  • the two mirror-image above and below the buffer 2 arranged Blasarme 9 with their nozzles 12 clean the surface of the buffer 2 forming elements so that their effectiveness is restored without an interruption in operation.
  • the dissolved impurities are taken along after leaving the buffer 2 and are separated if necessary in a downstream filter from the exhaust and eliminated without harm to the environment.
  • pressurized water is used with up to several 100 bar, so that at the nozzle 12 for pressurized water a considerable recoil force occurs.
  • Regenerative heat exchangers 2 of the type according to the invention can be used in virtually all systems from which a heated exhaust gas is released to the environment. Such heat exchangers 2 allow recovery of heat energy and are at the same time useful as starting points for filters. In addition to an economic gain, they thus also protect the environment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Power Steering Mechanism (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cleaning In General (AREA)
  • Gas Separation By Absorption (AREA)
  • Nozzles (AREA)

Abstract

The heat exchanger has a temporary storage (2), over which heat exchange of exhaust gas flows (6, 8) takes place. The temporary storage is immersed in the gas flows and is washable by pivotable blower arms (9), which carry spray nozzles (12) at free ends of the arms. A bearing axis of the blower arms is arranged axis-parallel to a flow direction of the gas flows in a region of the temporary storage. The temporary storage forms a symmetric axis for the laterally reversed opposite blower arms, which are provided with the nozzles for pressurized air and water, respectively.

Description

Die Erfindung betrifft einen Regenerativ-Wärmetauscher für im Wärmeaustausch miteinander stehende Gasströme, wobei der Wärmeaustausch über einen dauernd in alle beteiligten Gasströme eintauchenden Zwischenspeicher erfolgt, der von einem an seinem freien Ende Spritzdüsen tragenden, schwenkbaren Blasarm reinigbar ist, wobei eine Lagerachse des Blasarms parallel zur Strömungsrichtung der Gasströme im Bereich des Zwischenspeichers angeordnet ist und mit ihrer gedachten Verlängerung den Zwischenspeicher durchdringt.The invention relates to a regenerative heat exchanger for each other in the heat exchange gas flows, the heat exchange via a permanently immersed in all gas streams associated buffer takes place, which is cleaned by a spray nozzle at its free end, pivoting blowing arm, a bearing axis of the Blasarms parallel to Flow direction of the gas streams in the region of the buffer is arranged and penetrates with their imaginary extension of the buffer.

Bei Wärmeprozessen in industriellen Anlagen fallen häufig große Abgasmengen mit erheblichen Wärmeinhalten an, deren Rückgewinnung bei allgemein steigenden Energiekosten wirtschaftliche Vorteile bringt. Dies ist beispielsweise bei der Elektrizitätserzeugung, bei chemischen Prozessen oder auch bei der Nahrungsmittelverarbeitung oft der Fall. Zur Rückgewinnung von Wärme aus Abgas wird dieses dabei beispielsweise im Gegenstrom zu einem Frischluftstrom durch einen Zwischenspeicher geführt, der die Form einer langsam rotierenden Scheibe hat. Dieser Zwischenspeicher nimmt auf einer Seite Wärme aus dem Abgas auf und heizt mit dieser Wärme auf seiner anderen Seite einen kühleren Gasstrom, beispielsweise Verbrennungsluft, auf.In heating processes in industrial plants often fall large amounts of exhaust gas with considerable heat content, their recovery brings economic benefits at generally rising energy costs. This is often the case, for example, in electricity generation, in chemical processes or in food processing. For recovering heat from exhaust gas, this is guided, for example, in countercurrent to a fresh air flow through an intermediate store, which has the form of a slowly rotating disk. This buffer takes on one side of heat from the exhaust gas and heats with this heat on its other side a cooler gas stream, such as combustion air on.

Dabei wird unvermeidbar der Zwischenspeicher verschmutzt, so dass seine Wirksamkeit nachlässt. Demzufolge ist es erforderlich, die Zwischenspeicher von Zeit zu Zeit zu reinigen. Dies geschieht beispielsweise gemäß DE 44 42 055 A1 , Fig. 4, unter Einsatz eines Schwenkarms, der kürzer ist als der Radius des Zwischenspeichers. Der Schwenkarm trägt auf seinem freien Ende auf den Zwischenspeicher gerichtete Düsen. Diese Düsen spritzen in der Strömungsrichtung des Abgases Reinigungsflüssigkeit auf die Heizflächen des Zwischenspeichers, so dass Verunreinigungen gelöst und fortgespült werden.This inevitably contaminates the cache, so that its effectiveness wears off. As a result, it is necessary to clean the latches from time to time. This happens, for example, according to DE 44 42 055 A1 Fig. 4, using a pivot arm, which is shorter than the radius of the buffer. The swivel arm carries on its free end directed to the buffer memory nozzles. These nozzles inject cleaning liquid into the heating surfaces of the buffer in the direction of flow of the exhaust gas, so that contaminants are dissolved and flushed away.

Nachteilig ist hierbei, dass zwar die stromaufgerichtete Speicherseite gereinigt und gespült wird, dass aber die Spülung einseitig erfolgt, so dass sich bereits gelöste Verunreinigungen an anderer Stelle wieder ablagern können. Das kann auch durch einen an anderer Stelle angeordneten zweiten Schwenkarm nicht zuverlässig verhindert werden, weil dieser zweite Schwenkarm infolge der langsamen Rotation des Zwischenspeichers mit erheblicher Zeitverzögerung wirksam wird.The disadvantage here is that while the upstream side of the storage is cleaned and rinsed, but that the flushing is done on one side, so that already dissolved impurities can be deposited elsewhere again. This can not be reliably prevented by a second pivot arm arranged elsewhere because this second pivot arm is effective due to the slow rotation of the buffer with considerable time delay.

Der Erfindung liegt daher die Aufgabe zugrunde eine zuverlässige Entfernung von Verunreinigungen aus dem Bereich des Zwischenspeichers zu gewährleisten und dadurch einen möglichst großen Zeitintervall zwischen aufeinander folgenden Spülungen zu ermöglichen.The invention is therefore based on the object to ensure reliable removal of impurities from the region of the buffer and thereby to allow the largest possible time interval between successive flushes.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass zwei spiegelbildlich zum Zwischenspeicher angeordnete Blasarme mit mindestens je einer Düse für Druckluft und für Druckwasser vorgesehen sind. Dadurch werden auf der stromauf im Gasstrom von dem Zwischenspeicher gelöste Verunreinigungen angetrieben von Spülstrahlen aus stromab vom Zwischenspeicher liegenden Düsen sicher aus dessen Bereich entfernt.This object is achieved in that two mirror images of the buffer memory arranged blowing arms are provided with at least one nozzle for compressed air and pressurized water. As a result, impurities, which are dissolved upstream of the intermediate store in the gas flow, are reliably removed from its area, driven by rinsing jets from nozzles located downstream of the intermediate store.

Zum Schutz gegen Korrosion sind die Lager der Blasarme vorteilhafterweise abgekapselt gegen die beteiligten Gasströme zwischen dem Außenrand des scheibenförmig gestalteten Zwischenspeichers und dessen Mittelachse angeordnet. Dabei ist zweckmäßigerweise der Abstand der Lager vom Außenrand des Zwischenspeichers deutlich kleiner als der Abstand von dessen Mittelachse und fluchten dabei die Lager der beiden Blasarme miteinander. Diese Lageranordnung führt zu kurzen Blasarmen und führt dadurch auch bei hohen Drücken von Druckluft und Druckwasser selbst bei nicht unerheblichen Rückstoßkräften an den Düsen nur zu gut beherrschbaren Lagerkräften.To protect against corrosion, the bearings of the blower arms are advantageously arranged encapsulated against the gas flows involved between the outer edge of the disc-shaped intermediate memory and its central axis. It is expediently the distance of the bearing from the outer edge of the buffer significantly smaller than the distance from the central axis and aligned while the bearings of the two blowing arms together. This bearing arrangement leads to short blowing arms and thereby leads even at high pressures of compressed air and pressurized water even with not inconsiderable recoil forces on the nozzles only to well controllable bearing forces.

Die Zuleitungskanäle für Spülmittel zu den Düsen sind zweckmäßig konzentrisch zueinander angeordnet und die Blasarme sind in Richtung auf ihr freies Ende stufenweise verjüngt.The supply channels for detergent to the nozzles are expediently arranged concentrically to one another and the blowing arms are gradually tapered in the direction of their free end.

Zweckmäßigerweise dient ein achsparallel zur Strömungsrichtung der Gasströme abgewinkelter Teil der Blasarme zu deren Führung in zwei Lagern. Die Lager sind vorteilhafterweise als Wälzlager ausgeführt und die maximalen Auslenkungen der Blasarme führen deren freien Enden bis an den äußeren und den inneren Rand des Zwischenspeichers.Conveniently, an axially parallel to the flow direction of the gas flows angled part of the blowing arms used to guide them in two camps. The bearings are advantageously designed as a rolling bearing and the maximum deflections of the blower arms lead their free ends to the outer and the inner edge of the buffer.

Durch die spiegelbildliche Anordnung von zwei Blasarmen ist einerseits eine gute Reinigung und darüber hinaus ein sicherer Abtransport von gelösten Verunreinigungen gewährleistet und ein großer zeitlicher Abstand zwischen aufeinander folgenden Reinigungsprozessen ermöglicht.Due to the mirror-image arrangement of two blowing arms, on the one hand, good cleaning and, moreover, a safe removal of dissolved impurities is ensured and a large time interval between successive cleaning processes is made possible.

Ein Ausführungsbeispiel eines Regenerativ-Wärmetauschers ist in einer Zeichnung dargestellt. Dabei zeigt:

Fig. 1:
Einen Schnitt, und
Fig. 2:
eine Draufsicht ohne die oberen Kanalabschnitte für die Gasströme.
An embodiment of a regenerative heat exchanger is shown in a drawing. Showing:
Fig. 1:
A cut, and
Fig. 2:
a plan view without the upper channel sections for the gas streams.

Ein Rahmen 1 umfasst einen Zwischenspeicher 2, der über eine Welle 3 drehbar im Rahmen 1 gelagert ist. Ein Gehäuse 4 umhüllt den Zwischenspeicher 2 und ist auf seinem gesamten Umfang diesem gegenüber durch Dichtlippen 5 abgedichtet. Der in der Zeichnung links liegende Teil des Zwischenspeichers 2 wird von unten nach oben von einem heißen Gasstrom 6 durchströmt, so dass jeweils der in diesem Teil liegende Abschnitt des Zwischenspeichers 2 aufgeheizt wird.A frame 1 comprises a buffer store 2, which is mounted rotatably in the frame 1 via a shaft 3. A housing 4 encloses the buffer 2 and is sealed over its entire circumference to the latter by sealing lips 5. The part of the buffer 2 located on the left in the drawing is flowed through from below from below by a hot gas stream 6, so that in each case the portion of the buffer 2 lying in this part is heated up.

Der Zwischenspeicher 2 wird auf nicht näher dargestellte Art und Weise langsam in Richtung eines Pfeiles 7 gedreht, so dass der aufgeheizte Teil des Zwischenspeichers 2 langsam in den in der Zeichnung rechts liegenden Teil des Gehäuses 4 wandert. Dieser Teil des Gehäuses 4 wird von oben nach unten von einem kalten Gasstrom 8 passiert, an den der Zwischenspeicher 2 die aus dem Gasstrom 6 aufgenommene Wärme abgibt, so dass der nunmehr aufgeheizte Gasstrom 8, beispielsweise als Verbrennungsluft, einer Feuerung zugeführt werden kann. Der abgekühlte Abschnitt des Zwischenspeichers 2 wandert weiter und nimmt im links liegenden Teil des Gehäuses 4 erneut Wärme aus dem Gasstrom 6 auf und ein neuer Zyklus des Wärmeaustauschs beginnt.The buffer 2 is slowly rotated in a manner not shown in the direction of an arrow 7, so that the heated part of the buffer 2 slowly moves in the right in the drawing part of the housing 4. This part of the housing 4 is passed from top to bottom of a cold gas stream 8, to which the buffer 2 emits the heat absorbed from the gas stream 6, so that the now heated gas stream 8, for example, as combustion air, a furnace can be supplied. The cooled section of the buffer 2 continues to travel and again absorbs heat from the gas stream 6 in the left-hand part of the housing 4 and a new cycle of heat exchange begins.

Der Zwischenspeicher 2 ist im Wesentlichen aus parallel zu den Gasströmen 6 und 8 angeordneten, im einzelnen nicht dargestellten, Lamellen aus einem gut wärmeleitenden Werkstoff zusammengesetzt und setzt den Gasströmen 6 und 8 nur einen sehr geringen Widerstand entgegen. Trotzdem wird der Zwischenspeicher 2 im Betrieb verunreinigt, so dass seine Wärmeaufnahme ebenso wie seine Fähigkeit diese wieder abzugeben, beeinträchtigt wird. Daraus ergibt sich die Notwendigkeit, den Zwischenspeicher 2 während des Betriebs in periodischen Abständen zu reinigen. Zu diesem Zweck sind Blasarme 9 vorgesehen, die mit ihren freien Enden zwischen dem äußeren Rand 10 und dem inneren Rand 11 des Zwischenspeichers 2 hin- und herschwenkbar sind.The buffer 2 is substantially composed of parallel to the gas streams 6 and 8, not shown in detail, lamellae composed of a good heat-conducting material and sets the gas streams 6 and 8 only a very low resistance. Nevertheless, the buffer 2 is contaminated during operation, so that its heat absorption as well as its ability to give them back, is impaired. This results in the need to periodically clean the buffer 2 during operation. For this purpose, blowing arms 9 are provided which are reciprocable with their free ends between the outer edge 10 and the inner edge 11 of the buffer 2 and herschwenkbar.

An ihren freien Enden tragen die Blasarme 9 Düsen 12. So sind beispielsweise am Ende des eingangsseitig für den Gasstrom 6 angeordneten Blasarm 9 zwei Düsenplatten 12 vorgesehen, davon je eine Niederdruck-Düsenplatte und Hochdruck-Düsenplatte. Eine Niederdruck-Düsenplatte ist geeignet für Dampf, Druckluft und Wasser. Eine Hochdruck-Düsenplatte ist geeignet für Wasser. Auf diese Weise können praktisch alle im Normalbetrieb auftretenden Verschmutzungen gelöst, abgespült und gegebenenfalls auch zerkleinert werden. Diese Verschmutzungen werden dann quer durch den Zwischenspeicher 2 mitgenommen, wobei auf dem ausgangsseitig von dem Zwischenspeicher 2 auf dem zweiten Blasarm vorgesehene Düsen 12 zuverlässig verhindern, dass sich die Verschmutzungen erneut festsetzen. Auf den Blasarmen können Düsen beidseitig gleich angeordnet werden.At their free ends, the blowing arms 9 carry nozzles 12. Thus, for example, two nozzle plates 12 are provided at the end of the inlet side for the gas flow 6 arranged blowing arm 9, each of which a low-pressure nozzle plate and high-pressure nozzle plate. A low-pressure nozzle plate is suitable for steam, compressed air and water. A high pressure nozzle plate is suitable for water. In this way, virtually all contaminants occurring in normal operation can be solved, rinsed and optionally also be comminuted. These contaminants are then taken across the buffer 2, wherein provided on the output side of the latch 2 on the second blowing arm nozzles 12 reliably prevent the dirt settle again. On the blower arms nozzles can be arranged the same on both sides.

Die beiden spiegelbildlich über und unter dem Zwischenspeicher 2 angeordneten Blasarme 9 mit ihren Düsen 12 reinigen die Oberfläche der den Zwischenspeicher 2 bildenden Elemente, so dass deren Wirksamkeit ohne eine Betriebsunterbrechung wiederhergestellt ist. Die gelösten Verunreinigungen werden auch nach dem Austritt aus dem Zwischenspeicher 2 mitgenommen und werden falls erforderlich in einem nachgeschalteten Filter aus dem Abgas abgeschieden und ohne Schaden für die Umwelt beseitigt.The two mirror-image above and below the buffer 2 arranged Blasarme 9 with their nozzles 12 clean the surface of the buffer 2 forming elements so that their effectiveness is restored without an interruption in operation. The dissolved impurities are taken along after leaving the buffer 2 and are separated if necessary in a downstream filter from the exhaust and eliminated without harm to the environment.

Um ein Ablösen auch von verkrusteten Verunreinigungen zu gewährleisten, wird Druckwasser mit bis zu einigen 100 bar eingesetzt, so dass an der Düse 12 für Druckwasser eine nicht unerheblich Rückstoßkraft auftritt. Diese sicher aufzunehmen und gleichzeitig ein Verkanten des Blasarms 9 auszuschließen, sind Lager 13 mit einem Lagerabstand voneinander vorgesehen.In order to ensure a detachment of encrusted impurities, pressurized water is used with up to several 100 bar, so that at the nozzle 12 for pressurized water a considerable recoil force occurs. These safely absorb and at the same time exclude tilting of the Blasarms 9, bearings 13 are provided with a bearing distance from each other.

Regenerative Wärmetauscher 2 der erfindungsgemäßen Art sind in praktisch allen Anlagen einsetzbar, aus denen ein aufgeheiztes Abgas an die Umgebung abgegeben wird. Dabei ermöglichen derartige Wärmetauscher 2 eine Rückgewinnung von Wärmeenergie und sind gleichzeitig als Ansatzpunkte für Filter zweckmäßig. Neben einem wirtschaftlichen Gewinn ermöglichen sie also auch eine Schonung der Umwelt.Regenerative heat exchangers 2 of the type according to the invention can be used in virtually all systems from which a heated exhaust gas is released to the environment. Such heat exchangers 2 allow recovery of heat energy and are at the same time useful as starting points for filters. In addition to an economic gain, they thus also protect the environment.

Claims (10)

  1. A regenerative heat exchanger for gas streams (6, 8) in heat exchange with one another, the heat exchange occurring via a buffer (2) continuously immersed in all participating gas streams (6, 8), which is cleanable by a pivotable blowing arm (9) carrying spray nozzles (12) on its free end, a bearing axis of the blowing arm (9) being arranged axially parallel to the direction of flow of the gas streams (6, 8) in the area of the buffer (2) and its imaginary extension penetrating the buffer (2),
    characterized in that the buffer (2) forms an axis of symmetry for two blowing arms (9), lying in a mirror image opposite to one another, each having at least one nozzle (12) for compressed air and for pressurized water.
  2. The regenerative heat exchanger according to Claim 1,
    characterized in that axes of the bearings (13) of the blowing arms (9) lie between the outside edge (10) of the disc-shaped buffer (2) and its central axis, encapsulated from the participating gas streams (6, 8).
  3. The regenerative heat exchanger according to Claim 2,
    characterized in that the distance of the bearings (13) from the outside edge (10) of the buffer (2) is significantly less than the distance from its central axis.
  4. The regenerative heat exchanger according to Claim 3,
    characterized in that the axes of the bearings (13) of the two blowing arms (9) are aligned with one another.
  5. The regenerative heat exchanger according to Claim 1,
    characterized in that supply channels within the blowing arms (9) to the nozzles (12) are arranged concentrically to one another.
  6. The regenerative heat exchanger according to Claim 5,
    characterized in that the blowing arms (9) gradually taper off toward their free end.
  7. The regenerative heat exchanger according to Claim 6,
    characterized in that a supply channel for pressurized water is arranged concentrically in the blowing arm (9).
  8. The regenerative heat exchanger according to Claim 4,
    characterized in that a part of the blowing arm (9) angled axially-parallel to the direction of flow of the gas streams (6, 8) is guided by two bearings (13).
  9. The regenerative heat exchanger according to Claim 8,
    characterized in that the bearings (13) are implemented as roller bearings.
  10. The regenerative heat exchanger according to Claim 3,
    characterized in that the maximum excursions of the blowing arms (9) lead up to the outside (10) and the inside (11) edges of the buffer (2).
EP07020309A 2007-10-17 2007-10-17 Regenerative heat exchanger Active EP2051033B1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
PT07020309T PT2051033E (en) 2007-10-17 2007-10-17 Regenerative heat exchanger
ES07020309T ES2340329T3 (en) 2007-10-17 2007-10-17 REGENERATIVE HEAT EXCHANGER.
EP07020309A EP2051033B1 (en) 2007-10-17 2007-10-17 Regenerative heat exchanger
AT07020309T ATE456777T1 (en) 2007-10-17 2007-10-17 REGENERATIVE HEAT EXCHANGER
DE502007002762T DE502007002762D1 (en) 2007-10-17 2007-10-17 A regenerative heat exchanger
DK07020309.6T DK2051033T3 (en) 2007-10-17 2007-10-17 Regenerative heat exchanger
PL07020309T PL2051033T3 (en) 2007-10-17 2007-10-17 Regenerative heat exchanger
SI200730218T SI2051033T1 (en) 2007-10-17 2007-10-17 Regenerative heat exchanger
US12/245,561 US8360137B2 (en) 2007-10-17 2008-10-03 Regenerative heat exchanger
SA8290647A SA08290647B1 (en) 2007-10-17 2008-10-15 Regenerative Heat Exchanger
RU2008141205/06A RU2395037C2 (en) 2007-10-17 2008-10-16 Regenerative heat exchanger
CN2008101705038A CN101413770B (en) 2007-10-17 2008-10-17 Regenerative heat exchanger
HK09109456.9A HK1129922A1 (en) 2007-10-17 2009-10-13 Regenerative heat exchanger
CY20101100369T CY1112373T1 (en) 2007-10-17 2010-04-26 HEAT RECOVERY EXCHANGES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07020309A EP2051033B1 (en) 2007-10-17 2007-10-17 Regenerative heat exchanger

Publications (2)

Publication Number Publication Date
EP2051033A1 EP2051033A1 (en) 2009-04-22
EP2051033B1 true EP2051033B1 (en) 2010-01-27

Family

ID=39233126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07020309A Active EP2051033B1 (en) 2007-10-17 2007-10-17 Regenerative heat exchanger

Country Status (14)

Country Link
US (1) US8360137B2 (en)
EP (1) EP2051033B1 (en)
CN (1) CN101413770B (en)
AT (1) ATE456777T1 (en)
CY (1) CY1112373T1 (en)
DE (1) DE502007002762D1 (en)
DK (1) DK2051033T3 (en)
ES (1) ES2340329T3 (en)
HK (1) HK1129922A1 (en)
PL (1) PL2051033T3 (en)
PT (1) PT2051033E (en)
RU (1) RU2395037C2 (en)
SA (1) SA08290647B1 (en)
SI (1) SI2051033T1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1399495B1 (en) * 2010-04-13 2013-04-19 Studio Nuove Applic Ind S R L APPARATUS FOR THE DEACTIVATION OF GGH BASKETS.
US20140041692A1 (en) 2012-08-07 2014-02-13 Aquarecycle, Llc Apparatus for cleaning a surface
US9587894B2 (en) 2014-01-13 2017-03-07 General Electric Technology Gmbh Heat exchanger effluent collector
FR3038041B1 (en) * 2015-06-26 2017-07-21 E Beaudrey Et Cie SYSTEM FOR INTERCEPTING AND COLLECTING ALTERNATIVE SCAN CLEANING BODIES
EP3971511A4 (en) * 2019-07-26 2023-06-14 Geesco Co., Ltd. Heat exchanger cleaning system and heat exchanger cleaning method

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2355021A (en) * 1941-08-08 1944-08-01 Air Preheater Washing apparatus for air preheaters
US2761653A (en) * 1953-06-29 1956-09-04 Air Preheater Rotary heater washer control system
US3997294A (en) * 1973-11-24 1976-12-14 Apparatebau Rothemuhle Brandt & Kritzler Device for treating gases
DE2514173C3 (en) * 1975-04-01 1980-03-20 Kraftanlagen Ag, 6900 Heidelberg Device for cleaning the heat-exchanging surfaces of the storage masses of circulating regenerative heat exchangers
US4256511A (en) * 1979-09-17 1981-03-17 The Dow Chemical Company High energy wash of ljungstrom air preheater
US5044424A (en) * 1980-12-19 1991-09-03 Monro Richard J Heat generator
US4376443A (en) * 1981-08-24 1983-03-15 Stewart & Stevenson Services, Inc. Jet water cleaning apparatus
US4402104A (en) * 1981-10-14 1983-09-06 Prvni Brnenska Strojirna, Koncernovy Podnik Device for the surface cleaning of rotating machine elements
US4513807A (en) * 1983-04-29 1985-04-30 The United States Of America As Represented By The Secretary Of The Army Method for making a radial flow ceramic rotor for rotary type regenerator heat exchange apparatus: and attendant ceramic rotor constructions
DE3423619C2 (en) * 1984-06-27 1986-09-04 Balcke-Dürr AG, 4030 Ratingen Device for cleaning the heat-exchanging surfaces of the storage masses of regenerative heat exchangers
JPS61250497A (en) * 1985-04-26 1986-11-07 クラフタンラ−ゲン　アクチエンゲゼルシヤフト Heat exchanger matrix
JPS61289296A (en) * 1985-06-17 1986-12-19 Gadelius Kk Cleaning device for heat exchanger
US5097889A (en) * 1991-01-11 1992-03-24 Abb Air Preheater, Inc. Hot spot detection and supression system
US5366561A (en) * 1993-05-06 1994-11-22 Butterworth Jetting Systems, Inc. Air preheater cleaning method
US5368091A (en) * 1994-02-10 1994-11-29 Abb Air Preheater, Inc. Temperature monitoring method and system for regenerative heat exchanger
DE4442055A1 (en) * 1994-11-25 1996-05-30 Rothemuehle Brandt Kritzler Regenerative heat exchanger
JPH09133495A (en) * 1995-11-06 1997-05-20 Mitsubishi Heavy Ind Ltd Rotating regenerative heat exchanger
US5924478A (en) * 1997-05-08 1999-07-20 Caterpillar Inc. Radiator washing system and method
US6065528A (en) * 1999-08-09 2000-05-23 Abb Air Preheater, Inc. Air preheater cleaner

Also Published As

Publication number Publication date
PT2051033E (en) 2010-04-30
CN101413770B (en) 2010-10-13
ATE456777T1 (en) 2010-02-15
CY1112373T1 (en) 2015-12-09
PL2051033T3 (en) 2010-10-29
SI2051033T1 (en) 2010-06-30
RU2395037C2 (en) 2010-07-20
DK2051033T3 (en) 2010-05-31
CN101413770A (en) 2009-04-22
ES2340329T3 (en) 2010-06-01
US8360137B2 (en) 2013-01-29
US20090139694A1 (en) 2009-06-04
EP2051033A1 (en) 2009-04-22
RU2008141205A (en) 2010-04-27
DE502007002762D1 (en) 2010-03-18
SA08290647B1 (en) 2012-04-02
HK1129922A1 (en) 2009-12-11

Similar Documents

Publication Publication Date Title
EP2051033B1 (en) Regenerative heat exchanger
DE102008036686B4 (en) soot blowers
EP2462380A2 (en) Device for cleaning a heat exchanger
DE2935626C2 (en)
DE1921949A1 (en) Dust collector
AT9462U1 (en) WASTE WATER HEATER CORE
DE212020000396U1 (en) Treatment device for exhaust gases from the boiler for printing and dyeing
DE202021103277U1 (en) Exhaust gas recovery and purification device
DE2940883A1 (en) DEVICE FOR CLEANING THE TUBES OF A HEAT EXCHANGER
DE2923659A1 (en) DEVICE FOR BRANCHING CLEANING BODIES
EP3857147B1 (en) Device for preheating rod-like workpieces
EP1565702B1 (en) Process for cleaning tubes in heat exchangers
EP1762291B1 (en) Filter especially for ponds
EP0673665B1 (en) Fluid filter and process for separating dust particles from a fluid stream
DE3827357C2 (en)
DE2541902B2 (en) Device for collecting and removing solids from a flowing liquid
DE19925630A1 (en) Mechanical cleaner for heat exchanger coolant facilitates easy access to lower-cost sieve suction cleaner
DE102014009181B4 (en) Backwashable filter element and device with filter element for cleaning processing medium
DE3337827A1 (en) DEVICE FOR CLEANING THE REPLACEMENT AREAS OF A HEAT EXCHANGER
DE102007011957A1 (en) Bottle box cleaner
DE3917520C2 (en) Device for cleaning liquids
DE19729710B4 (en) Device for thickening liquids
DE60010410T2 (en) Management device for circulating in a heat exchanger solid
DE2931403A1 (en) Industrial gas filter with efficient dust removal - using element formed from long sheet of medium joined at edges by seams mounted in frame
WO2010142306A1 (en) Method for operating a plate heat exchanger and condenser system having a plate heat exchanger

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080606

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 502007002762

Country of ref document: DE

Date of ref document: 20100318

Kind code of ref document: P

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20100423

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2340329

Country of ref document: ES

Kind code of ref document: T3

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: BALCKE-DUERR GMBH

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100527

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 7279

Country of ref document: SK

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E007987

Country of ref document: HU

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100127

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100127

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100428

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100127

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20101028

BERE Be: lapsed

Owner name: BALCKE-DURR G.M.B.H.

Effective date: 20101031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101017

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100127

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101017

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101017

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 456777

Country of ref document: AT

Kind code of ref document: T

Effective date: 20121031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SK

Payment date: 20141021

Year of fee payment: 8

Ref country code: BG

Payment date: 20141028

Year of fee payment: 8

Ref country code: RO

Payment date: 20141023

Year of fee payment: 8

Ref country code: LT

Payment date: 20141020

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: HU

Payment date: 20141027

Year of fee payment: 8

Ref country code: CY

Payment date: 20141022

Year of fee payment: 8

Ref country code: LV

Payment date: 20141021

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: LT

Ref legal event code: MM4D

Effective date: 20151017

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 7279

Country of ref document: SK

Effective date: 20151017

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151017

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151018

Ref country code: LV

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151017

Ref country code: LT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151017

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151017

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151017

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20161026

Year of fee payment: 10

Ref country code: PT

Payment date: 20161007

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180417

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20181221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171018

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502007002762

Country of ref document: DE

Owner name: HOWDEN ROTHEMUEHLE GMBH, DE

Free format text: FORMER OWNER: BALCKE-DUERR GMBH, 57482 WENDEN, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 502007002762

Country of ref document: DE

Representative=s name: LANG & TOMERIUS PATENTANWALTSPARTNERSCHAFT MBB, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502007002762

Country of ref document: DE

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH, DE

Free format text: FORMER OWNER: BALCKE-DUERR GMBH, 57482 WENDEN, DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: PD

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: BALCKE-DUERR GMBH

Effective date: 20191205

REG Reference to a national code

Ref country code: SI

Ref legal event code: SP73

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH; DE

Effective date: 20191113

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20191212 AND 20191218

REG Reference to a national code

Ref country code: NL

Ref legal event code: HC

Owner name: HOWDEN ROTHEMUEHLE GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: BALCKE-DUERR ROTHEMUEHLE GMBH

Effective date: 20230102

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502007002762

Country of ref document: DE

Owner name: HOWDEN ROTHEMUEHLE GMBH, DE

Free format text: FORMER OWNER: BALCKE-DUERR ROTHEMUEHLE GMBH, 57462 OLPE, DE

REG Reference to a national code

Ref country code: SI

Ref legal event code: SP73

Owner name: HOWDEN ROTHEMUEHLE GMBH; DE

Effective date: 20230203

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230531

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502007002762

Country of ref document: DE

Representative=s name: MURGITROYD GERMANY PATENTANWALTSGESELLSCHAFT M, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20231026

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231027

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20231004

Year of fee payment: 17

Ref country code: SI

Payment date: 20231004

Year of fee payment: 17

Ref country code: IT

Payment date: 20231023

Year of fee payment: 17

Ref country code: FR

Payment date: 20231025

Year of fee payment: 17

Ref country code: FI

Payment date: 20231025

Year of fee payment: 17

Ref country code: DK

Payment date: 20231027

Year of fee payment: 17

Ref country code: DE

Payment date: 20231027

Year of fee payment: 17

Ref country code: CZ

Payment date: 20231011

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20231004

Year of fee payment: 17