EP0357590B1 - Chaudière de récupération - Google Patents

Chaudière de récupération Download PDF

Info

Publication number
EP0357590B1
EP0357590B1 EP89890214A EP89890214A EP0357590B1 EP 0357590 B1 EP0357590 B1 EP 0357590B1 EP 89890214 A EP89890214 A EP 89890214A EP 89890214 A EP89890214 A EP 89890214A EP 0357590 B1 EP0357590 B1 EP 0357590B1
Authority
EP
European Patent Office
Prior art keywords
heating surface
evaporator heating
circulation
collector
down pipe
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
EP89890214A
Other languages
German (de)
English (en)
Other versions
EP0357590A1 (fr
Inventor
Kurt Budin
Georg Dipl.-Ing. Dr. Gasteiger
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.)
AE ENERGIETECHNIK GMBH
Original Assignee
Austrian Energy and Environment SGP Waagner Biro GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3528112&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0357590(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Austrian Energy and Environment SGP Waagner Biro GmbH filed Critical Austrian Energy and Environment SGP Waagner Biro GmbH
Publication of EP0357590A1 publication Critical patent/EP0357590A1/fr
Application granted granted Critical
Publication of EP0357590B1 publication Critical patent/EP0357590B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • F22B1/1815—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines using the exhaust gases of gas-turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F22B29/04—Steam boilers of forced-flow type of combined-circulation type, i.e. in which convection circulation due to the difference in specific gravity between cold and hot water is promoted by additional measures, e.g. by injecting pressure-water temporarily

Definitions

  • the invention relates to a waste heat steam generator in use behind a gas turbine, according to the preamble of claims 1, 2 and 3.
  • a waste heat steam generator is known from US-A-2 031 423.
  • Waste heat steam generators are usually designed in two types, e.g. with natural circulation or forced circulation.
  • natural circulation the evaporator bundles are arranged in a horizontal flue gas duct in a vertical installation position and connected to at least one steam drum via downpipes and riser pipes.
  • the heating surface tubes from the superheater and economizer or from various other heating surfaces, if present, can be designed in a horizontal and or vertical arrangement.
  • the heating surface pipes from the superheater, evaporator and economizer or other heating surfaces, if present, are arranged in a vertical flue gas duct in a horizontal installation position.
  • the evaporator heating surfaces are connected to at least one steam drum via downpipes, circulation pumps and risers.
  • the circulation pumps which ensure the water circulation in the evaporator, are associated with a cost and labor in the construction of the system and also form a disruptive factor.
  • the object of the present invention is to provide a waste heat steam generator, which is a gas turbine and has the advantage that the water circulation is ensured without the use of a circulation pump.
  • the present waste heat steam generator is provided in a vertical version with an evaporator heating surface 1, a drum 2, a down pipe system 3, a riser pipe system 4 and a feed line 5 with a feed pump 6.
  • the drum 2 is connected on the water side to the downpipe system 3, which opens into an inlet header 7 via a lower stroke 29, to which the pipe system of the evaporator heating surface 1 is connected.
  • the term "lower stroke” is to be understood so that the downpipes 3 are led down to a level which is lower than the inlet header 7 of the evaporator heating surface 1, so that the water flows from the bottom up before it enters the collector.
  • the "lower stroke” can thus be understood as a kind of water bag.
  • the evaporator heating surface 1 is connected on the outlet side to an outlet header 8, into which the riser pipe system 4 opens, which is connected to the steam chamber of the drum 2 via an overtravel 9, or directly via a pipe system 10 to the water chamber 11 of the drum 2.
  • overstroke is to be understood such that the steam / water mixture is introduced into the drum 2 higher than the level of the water in it.
  • the feed pump 6 promotes the like from a feed water tank. Via the feed line 5 water into the water space 11 for make-up.
  • an injector 12 is provided in the downpipe system 3, which is connected to a shut-off device 14, e.g. a valve, a tap or the like.
  • a shut-off device 14 e.g. a valve, a tap or the like.
  • provided line 13 is connected to the feed line 5.
  • a second variant of claim 1 provides a pump 16 in a bypass line 15 which connects the downpipe system 3 with an injector 17 Riser pipe system 4 connects.
  • This pump 16 feeds boiler water into the riser pipe system 4 in the direction of its flow, as a result of which the water circulation is dynamically excited in the start-up phase and the excitation can be switched off again after switching off the pump 16 after the stationary circulation state has been reached.
  • a third variant can be in the riser pipe system 4 from a line 18 in which a shut-off device 19, e.g. a valve, a tap or the like. steam, nitrogen or another gas.
  • a shut-off device 19 e.g. a valve, a tap or the like. steam, nitrogen or another gas. This measure increases the thermosiphon effect and ensures an acceleration of the circulation process in the start-up phase.
  • a fourth variant sees one through a shut-off device 21, e.g. a valve, a tap or the like.
  • lockable line 22 which connects the inlet header 7 to the outlet header 8 of the evaporator heating surface 1.
  • the installation of such a lockable connecting line 22 between at least one inlet and at least one outlet header 7 or 8 of the evaporator heating surfaces 1 ensures that when the first vapor bubbles are formed, they stimulate the water circulation in the start-up phase by direct discharge into the riser pipe system 4.
  • thermosiphon effect of the water circulation can be advantageously influenced by suitable dimensioning of the pipe system of the evaporator heating surfaces 1 and of the downcomer and riser pipe systems 3 and 4.
  • the waste heat boiler design can be retained in the known embodiment and the use of circulation pumps in the circuit can be dispensed with.
  • the evaporator heating surface 1 is arranged in a horizontal arrangement in an exhaust gas duct 23, into which the exhaust gases of one or more gas turbines flow in the direction of arrow A, above and / or below the evaporator heating surface 1, a superheater heating surface 24 can also be provided in a horizontal arrangement, which is connected on the inlet side to the steam chamber 26 of the drum 2 via an inlet collector 30 and a line 25 and on the outlet side leads to the turbine via an outlet collector 31 and a line 27 provided with a shut-off device 28 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (3)

  1. Générateur de vapeur récupérateur de chaleur perdue pour l'utilisation derrière une turbine à gaz, dans lequel est prévu au moins un tambour (2) qui est lié dans un système de circulation, constitué au moins d'un tuyau de descente (3), au moins d'une surface de chauffe d'évaporateur (1) et au moins d'un tuyau de montée (4), les tuyaux de descente (3) étant guidés vers le bas jusqu'à un plan qui est plus bas que le collecteur d'entrée (7) de la surface de chauffe d'évaporateur (1) de sorte que l'eau s'écoule depuis le bas vers le haut avant d'entrer dans le collecteur (7), la surface de chauffe d'évaporateur (1) étant disposée horizontalement et la circulation étant une circulation naturelle, caractérisé en ce qu'au moins un injecteur (12, 17) est disposé comme aide au déminage qui amène seulement dans la phase de déminage un courant partiel d'eau dans la direction d'écoulement souhaitée dans le système de tuyau de descente (3) et/ou dans le système de tuyau de montée (4).
  2. Générateur de vapeur récupérateur de chaleur perdue pour l'utilisation derrière une turbine à gaz, dans lequel est prévu au moins un tambour (2) qui est lié dans un système de circulation constitué au moins d'un tuyau de descente (3), au moins d'une surface de chauffe d'évaporateur (1) et au moins d'un tuyau de montée (4), les tuyaux de descente (3) étant guidés vers le bas jusqu'à un plan qui est situé plus bas que le collecteur d'entrée (7) de la surface de chauffe d'évaporateur (1) de sorte que l'eau s'écoule depuis le bas vers le haut avant d'entrer dans le collecteur (7), la surface de chauffe d'évaporateur (1) étant disposée horizontalement et la circulation étant une circulation naturelle, caractérisé en ce qu'il est prévu comme aide au démarrage un dispositif pour l'amenée de vapeur, d'un mélange de vapeur - eau, de gaz tel que l'azote ou analogues dans le système de tuyau de montée (4).
  3. Générateur de vapeur récupérateur de chaleur perdue pour l'utilisation derrière une turbine à gaz dans lequel est prévu au moins un tambour (2) qui est lié dans un système de circulation constitué au moins d'un tuyau de descente (3), au moins d'une surface de chauffe d'évaporateur (1) et au moins d'un tuyau de montée (4), les tuyaux de descente (3) étant guidés vers le bas jusqu'à un plan qui est situé plus bas que le collecteur d'entrée (7) de la surface de chauffe d'évaporateur (1) de sorte que l'eau s'écoule depuis le bas vers le haut, avant d'entrer dans le collecteur (7), la surface de chauffe d'évaporateur (1) étant disposée horizontalement et la circulation étant une circulation naturelle, caractérisé en ce qu'il est prévu comme aide au démarrage entre au moins un collecteur d'entrée et un collecteur de sortie (7 et 8, respectivement) de la surface de chauffe d'évaporateur (1) un conduit de liaison (22) pouvant être fermé.
EP89890214A 1988-08-29 1989-08-18 Chaudière de récupération Expired - Lifetime EP0357590B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2116/88A AT392683B (de) 1988-08-29 1988-08-29 Abhitze-dampferzeuger
AT2116/88 1988-08-29

Publications (2)

Publication Number Publication Date
EP0357590A1 EP0357590A1 (fr) 1990-03-07
EP0357590B1 true EP0357590B1 (fr) 1993-07-21

Family

ID=3528112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89890214A Expired - Lifetime EP0357590B1 (fr) 1988-08-29 1989-08-18 Chaudière de récupération

Country Status (8)

Country Link
EP (1) EP0357590B1 (fr)
KR (1) KR0142330B1 (fr)
CN (1) CN1018574B (fr)
AT (1) AT392683B (fr)
DE (1) DE58904955D1 (fr)
DK (1) DK169109B1 (fr)
ES (1) ES2043114T3 (fr)
FI (1) FI93055C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524727A1 (de) * 1995-07-07 1997-01-09 Nem Bv Naturumlauf-Abhitzedampferzeuger
RU2491477C1 (ru) * 2012-02-08 2013-08-27 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Парогенераторная установка
WO2015140361A1 (fr) 2014-03-21 2015-09-24 Foster Wheeler Energia, S.L.U. Cycle d'évaporation d'un générateur de vapeur à circulation naturelle raccordé à un conduit vertical pour un flux ascendant de gaz

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1005793A3 (fr) * 1992-05-08 1994-02-01 Cockerill Mech Ind Sa Chaudiere de recuperation de chaleur a circulation induite.
DE4441008A1 (de) * 1994-11-17 1996-05-23 Siemens Ag Anlage zur Dampferzeugung nach dem Naturumlaufprinzip und Verfahren zum Anstoß des Wasserumlaufs in einer derartigen Anlage
DE19534802A1 (de) * 1995-09-20 1997-04-10 Nem Bv Abhitzedampferzeuger, insbesondere in der Verwendung hinter einer Gasturbine
DE19806244A1 (de) * 1998-02-16 1999-08-19 Babcock Kraftwerkstech Gmbh Dampferzeuger mit mehreren Rohrbündeln
EP1443268A1 (fr) * 2003-01-31 2004-08-04 Siemens Aktiengesellschaft Générateur de vapeur
EP2034137A1 (fr) * 2007-01-30 2009-03-11 Siemens Aktiengesellschaft Procédé d'operation d'une installation à turbine à gaz et à vapeur et installation à turbine à gaz et à vapeur correspondante
US9518731B2 (en) 2011-03-23 2016-12-13 General Electric Technology Gmbh Method and configuration to reduce fatigue in steam drums
US20120247406A1 (en) * 2011-03-28 2012-10-04 Alstom Technology Ltd. Method of controlling drum temperature transients
WO2014108980A1 (fr) 2013-01-10 2014-07-17 パナソニック株式会社 Dispositif de cycle de rankine, et système de cogénération
US9982881B2 (en) * 2015-04-22 2018-05-29 General Electric Technology Gmbh Method and system for gas initiated natural circulation vertical heat recovery steam generator
EP3835653A1 (fr) * 2019-12-11 2021-06-16 Siemens Aktiengesellschaft Remplissage d'évaporateur à chaud

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2031423A (en) * 1929-03-15 1936-02-18 Foster Wheeler Corp Power plant
US2702026A (en) * 1952-07-31 1955-02-15 Svenska Maskinverken Ab Steam generating plant utilizing heat emanating from many different sources
GB810900A (en) * 1956-03-22 1959-03-25 Vorkauf Heinrich Improvements in steam generators with pressure-resistant, cylindrical casings
US4188916A (en) * 1978-05-15 1980-02-19 Deltak Corporation Waste heat boiler for abstraction of heat energy from gaseous effluent containing corrosive chemical contaminants
US4316435A (en) * 1980-02-27 1982-02-23 General Electric Company Boiler tube silencer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
K. Schröder "Die Kraftwerkausrüstung", 1966, Springer-Verlag, Seiten 62-63. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524727A1 (de) * 1995-07-07 1997-01-09 Nem Bv Naturumlauf-Abhitzedampferzeuger
DE19524727C2 (de) * 1995-07-07 1998-04-09 Nem Bv Naturumlauf-Abhitzedampferzeuger
RU2491477C1 (ru) * 2012-02-08 2013-08-27 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Парогенераторная установка
WO2015140361A1 (fr) 2014-03-21 2015-09-24 Foster Wheeler Energia, S.L.U. Cycle d'évaporation d'un générateur de vapeur à circulation naturelle raccordé à un conduit vertical pour un flux ascendant de gaz

Also Published As

Publication number Publication date
CN1041438A (zh) 1990-04-18
FI893754A (fi) 1990-03-01
CN1018574B (zh) 1992-10-07
ATA211688A (de) 1990-10-15
FI93055B (fi) 1994-10-31
DK422389D0 (da) 1989-08-28
AT392683B (de) 1991-05-27
DK422389A (da) 1990-03-01
FI893754A0 (fi) 1989-08-09
DK169109B1 (da) 1994-08-15
ES2043114T3 (es) 1993-12-16
EP0357590A1 (fr) 1990-03-07
DE58904955D1 (de) 1993-08-26
FI93055C (fi) 1995-02-10
KR900003582A (ko) 1990-03-26
KR0142330B1 (ko) 1998-07-01

Similar Documents

Publication Publication Date Title
EP0357590B1 (fr) Chaudière de récupération
EP0425717B1 (fr) Générateur de vapeur à passage unique
AT394100B (de) Abhitze-dampferzeuger
EP1059488B1 (fr) Procédé et dispositif pour réchauffer un milieu liquide
DE4303613C2 (de) Verfahren zur Erzeugung von Dampf in einem Zwangsdurchlaufdampferzeuger
EP2324285B1 (fr) Générateur de vapeur à récupération de chaleur
EP1794495B1 (fr) Generateur de vapeur en continu chauffe a l'aide d'un combustible fossile
DE19544224B4 (de) Chemische Fahrweise eines Wasser/Dampf-Kreislaufes
EP0981014B1 (fr) Centrale d'énergie et procédé pour sa mise en marche et pour la purification de son cycle eau-vapeur
DE69812811T2 (de) Verfahren und Anordnung für Kombikraftwerk
DE60305707T2 (de) Verdampfervorrichtung
DE69004929T2 (de) Dampferzeugungssystem.
EP0764813B1 (fr) Chaudière de récupération, utilisée notamment derrière une turbine à gaz
EP0812407B1 (fr) Procede et systeme de demarrage d'un generateur de vapeur a fonctionnement continu
DE1959228C3 (de) Dampferzeuger
EP0919767B1 (fr) Centrale combinée gaz-vapeur avec un générateur de vapeur à passage unique
EP0657627A1 (fr) Mise en marche d'une chaudière de récupération avec au moins deux systèmes de pression séparés
EP0609191B1 (fr) Installation pour le craquage thermique d'un mélange d'hydrocarbures liquides et gazeuses
DE19507335C2 (de) Dampferzeuger
DE407343C (de) Dampferzeugungsanlage mit in dem Abzugskanal der Rauch- oder Feuergase angeordnetem, als Niederdruckspeicher dienendem Heisswasserspeicher
DE102011052430B4 (de) Dampfnutzungsanlage
DE68903954T2 (de) Abhitzekessel mit zwischenueberhitzer.
DE109886C (fr)
DE137835C (fr)
DE2447840A1 (de) Wasserrohrkessel

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19900321

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SGP-VA ENERGIE- UND UMWELTTECHNIK GESELLSCHAFT M.B

17Q First examination report despatched

Effective date: 19910320

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AUSTRIAN ENERGY & ENVIRONMENT SGP/WAAGNER-BIRO GMB

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 58904955

Country of ref document: DE

Date of ref document: 19930826

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930812

ITF It: translation for a ep patent filed

Owner name: UFFICIO BREVETTI RICCAR

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2043114

Country of ref document: ES

Kind code of ref document: T3

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: L. & C. STEINMUELLER GMBH

Effective date: 19940406

NLR1 Nl: opposition has been filed with the epo

Opponent name: L. & C. STEINMUELLER GMBH.

EAL Se: european patent in force in sweden

Ref document number: 89890214.3

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAA Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOS REFN

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

Ref country code: FR

Payment date: 19970717

Year of fee payment: 9

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

Ref country code: SE

Payment date: 19970724

Year of fee payment: 9

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

Ref country code: CH

Payment date: 19970804

Year of fee payment: 9

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19951106

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 NON-PAYMENT OF DUE FEES

Effective date: 19980819

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

Ref country code: CH

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

Effective date: 19980831

Ref country code: LI

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

Effective date: 19980831

NLR2 Nl: decision of opposition
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: FR

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

Effective date: 19990430

EUG Se: european patent has lapsed

Ref document number: 89890214.3

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

NLS Nl: assignments of ep-patents

Owner name: AE ENERGIETECHNIK GMBH

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

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

Ref country code: IT

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

Effective date: 20050818

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

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

Ref country code: NL

Payment date: 20080813

Year of fee payment: 20

Ref country code: ES

Payment date: 20080922

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20080813

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20081020

Year of fee payment: 20

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

Ref country code: BE

Payment date: 20080820

Year of fee payment: 20

BE20 Be: patent expired

Owner name: *AE ENERGIETECHNIK G.M.B.H.

Effective date: 20090818

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20090817

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20090818

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090819

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090818

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090817

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 EXPIRATION OF PROTECTION

Effective date: 20090819