EP2627874A2 - Rééquipement d'une prise de vapeur de chauffe dans une centrale à combustible fossile - Google Patents

Rééquipement d'une prise de vapeur de chauffe dans une centrale à combustible fossile

Info

Publication number
EP2627874A2
EP2627874A2 EP11796646.5A EP11796646A EP2627874A2 EP 2627874 A2 EP2627874 A2 EP 2627874A2 EP 11796646 A EP11796646 A EP 11796646A EP 2627874 A2 EP2627874 A2 EP 2627874A2
Authority
EP
European Patent Office
Prior art keywords
steam
steam turbine
heating
power plant
turbine
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.)
Withdrawn
Application number
EP11796646.5A
Other languages
German (de)
English (en)
Inventor
Gerald Stief
Andreas Pickard
Thomas Schneider
Johannes-Werner Wein
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP2627874A2 publication Critical patent/EP2627874A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
    • F01K7/22—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type the turbines having inter-stage steam heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/38—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of turbine type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]

Definitions

  • the object of the invention is therefore to specify a method for retrofitting a subsequent vapor extraction from the steam process of a fossil-fueled power plant, which can be realized in a simple and cost-effective manner, and which is also thermodynamically favorable, so that the efficiency Losses due to the additional Dampfentnähme minimized who ⁇ .
  • a heating steam turbine is provided, which is connected to the overflow of the steam turbine.
  • the invention makes it possible to choose a sampling point that is outside the turbine. This makes it possible to retrofit without high initial investment.
  • the use of a back-pressure turbine with sampling points makes it possible to realize the multistage ⁇ -stage heating which is thermodynamically more favorable than a single-stage heating.
  • this concept allows retrofit a subsequent thermodynamic optimization ⁇ tion because the withdrawals are set only with the retrofit.
  • the heating steam extraction from the main process is decoupled by the use of the back pressure steam turbine. Since the back-pressure steam turbine is LOVED ⁇ fert only with the conversion, not taking part must be provided on the main steam turbine. Thus, the retrofitting is possible even in a power plant in which a Schudampfentnähme was not included in the construction. In this case, however, a modification to the low-pressure turbine could be necessary .
  • the steam extraction line is connected to a reheat line.
  • an auxiliary capacitor is connected in parallel to the steam extraction line.
  • the auxiliary capacitor serves to condense the resulting in case of failure or intentional shutdown of Dampfentnähme excess steam in the auxiliary capacitor.
  • FIG. 1 shows a schematic diagram of a steam turbine arrangement with a back-pressure steam turbine according to the invention
  • FIG. 2 shows a schematic diagram of a steam turbine arrangement
  • the steam extraction here serves the district heating supply using two heating capacitors HZ-K.
  • the connection of the district heating system to the gas and steam turbine power plant takes place via the overflow line of the steam turbine.
  • vapor is withdrawn (NAA) and Gelei ⁇ tet via a steam line from the turbine building UMC to the district heating buildings and.
  • the actual district heating system is in the form of 2 x 50% heating condensers.
  • the district heating is carried out in one stage, depending on the required district heating capacity.
  • Maximum two Schuvorierr can transmit 265 MW thermal in the district heating system ⁇ together during normal operation.
  • the district heating system can also be operated with steam from the cold intermediate superheat (KZÜ) (emergency operation with standstill steam turbine).
  • KZÜ cold intermediate superheat
  • the power transmission into the district heating network is thermally limited.
  • the district heating return water to be heated is provided at the transfer point with a pressure of approx. 5-22 bar and flows via the two steam-heated heating preheaters (HzVWl and HzVW2) back into the district heating supply to the district heating consumers.
  • the district heating supply and the district heating return can each be separated from the district heating water network with a motorized flap.
  • Each HzVW can be connected on the inlet side with a manual shut-off flap and on the outlet side with a ner engine flap are shut off individually. They have a common bypass with a motorized valve.
  • the steam for the two HzVW is taken from the overflow line to the low pressure (ND) steam turbine (DT) in a steam turbine operation via a motorized tapping flap.
  • ND low pressure
  • DT steam turbine
  • Two check valves in the line prevent backflow to the DT.
  • a vapor tester monitors compliance with the maximum permitted pressure in this line.
  • MD medium-pressure
  • the DT tap lines are dewatered and warmed via drainage lines with motor-operated shut-off valves to the MAG condenser.
  • the HzVW overall staggers switched on this the bypassing of HzVW is fully open before starting up the district heating
  • the control valves at the outlet of HzVW are CLOSED ⁇ sen and the heat mouse coupling begins by the exit.
  • ⁇ flap opens the HzVWl.
  • the control valve closes controlled to increase the district heating power in repeater. with increasing heat demand the damper is regulated at the outlet of HzVW2 opened and, as previously described in HzVWl, closes at further increasing heat demand the damper in the HzVW-by-pass until the entire amount of overall flow through the HzVW.
  • Dampfprüfstock monitors compliance with the maximum permitted pressure on the low pressure side. When exceeding the value a ⁇ provided the appropriate Umformventil is directly applicable closed. Any leakage of the fitting which could lead to a further increase in pressure, are in each case via a downstream safety valve gelei ⁇ tet.
  • the injection water for steam cooling the Dampfumformsta- tion is taken from the condensate system after the condensate pumps.
  • the injection water lines are equipped with an upstream dirt filter to protect against contamination of the injection control valve.
  • the Kirsab ⁇ section is up to the control valve under certain circumstances secured with a safety valve, so it can not come as a result of heating the trapped condensate to damage.
  • the steam pipes in front of the steam forming stations are heated and dewatered via drainage pipes with motor-operated shut-off valves to the LCM drainage system.
  • the HzVW is shut down in exactly the reverse order of the connection.
  • the condensate in the HzVW geodesically or due to the pressure difference in the main condenser, where it is passed through a main condensate preheater, so as to work more energy efficient.
  • a control valve in the drain line keeps the level in the HzVW constant within the specified limits.
  • the two HzVW remain at 'not in operation be ⁇ sensitive district heating pressurized hot water side, so that evaporation is reliably prevented.
  • On the heating water side both HzVWs are equipped with a safety valve in order to dissipate the expanding heating water during heating and enclosed medium. Valves operated in the vacuum range have a sealed water connection or are equipped with a vacuum-tight spindle.
  • the pulse lines of the level measurements of the HzVW are always kept filled via single-line lines.
  • a safety valve is installed on both HzVWs in order to be able to dissipate the resulting heating water in case of pipe break or leaks.
  • the district heating system according to FIG. 2 has the following tasks:
  • the district heating system consists of the following main components:
  • FIG. 1 shows a steam turbine arrangement with a back-pressure steam turbine according to the invention.
  • the connection of the district heating system to the combined cycle gas turbine plant takes place in the same way as in FIG. 2.
  • steam is taken and directed via a steam line from the machine house UMC to the district heating building UND.
  • the steam from the NM system is directed either only to the steam turbine or additionally to a third heating condenser (HzVW3).
  • District heating is up to three stages depending on the required district heating capacity. Accordingly, depending on requirements, two or even three heating condensers are operated on the steam side. Under each steam turbine discharge there is a heating condenser (HzVWl and HzVW2). Together with maximum steam turbine load, for example, they can heat up 120 MW thermally from the NM
  • the heating capacitor 3 (HzVW 3) is additionally vapor-deposited. This is supplied directly with steam from the NM system.
  • the district heating system can also be operated with steam from the cold intermediate superheat (KZÜ) (emergency operation with standstill steam turbine).
  • KZÜ cold intermediate superheat
  • the power transfer supply to the district heating network to, for example, 220 MW thermally limited.
  • the entire district heating can be transmitted via the HzVW3 in the district heating network.
  • the steam supply to the heating steam turbine is locked and the steam is supplied exclusively to the HzVW3.
  • the district heating system according to FIG. 1 has the following tasks:
  • the district heating system consists of the following main components: - Double-flow heating steam turbine with a max. Terminal Leis ⁇ processing, for example, about 14 MW
  • Heating condensate system including heating condensate pumps
  • the district heating system can be accommodated in a separate building AND.
  • An enlarged district heating building may be required due to the increased space requirement of the heating steam turbine including ancillary units.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne un procédé de rééquipement d'une turbine à vapeur existante présentant une prise de vapeur, la turbine à vapeur comportant plusieurs niveaux de pression et étant intégrée dans une centrale à vapeur chauffée au combustible fossile, une conduite de prise de vapeur étant raccordée à un niveau de pression ou entre deux niveaux de pression de la turbine à vapeur, et une turbine à vapeur de chauffe étant couplée à la conduite de prise de vapeur.
EP11796646.5A 2010-12-08 2011-11-28 Rééquipement d'une prise de vapeur de chauffe dans une centrale à combustible fossile Withdrawn EP2627874A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010062623A DE102010062623A1 (de) 2010-12-08 2010-12-08 Verfahren zum Nachrüsten einer fossil befeuerten Kraftwerksanlage mit Heizdampfentnahme
PCT/EP2011/071180 WO2012076355A2 (fr) 2010-12-08 2011-11-28 Rééquipement d'une prise de vapeur de chauffe dans une centrale à combustible fossile

Publications (1)

Publication Number Publication Date
EP2627874A2 true EP2627874A2 (fr) 2013-08-21

Family

ID=45349165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11796646.5A Withdrawn EP2627874A2 (fr) 2010-12-08 2011-11-28 Rééquipement d'une prise de vapeur de chauffe dans une centrale à combustible fossile

Country Status (7)

Country Link
US (1) US20130247571A1 (fr)
EP (1) EP2627874A2 (fr)
KR (1) KR20130139326A (fr)
CN (1) CN103403303A (fr)
DE (1) DE102010062623A1 (fr)
RU (1) RU2013130993A (fr)
WO (1) WO2012076355A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103835778A (zh) * 2014-03-13 2014-06-04 俞述茜 一种发电系统
DK3533976T3 (da) * 2018-03-01 2020-10-19 Siemens Ag Anlæg med ekstraktionskondensationsturbine og ORC-proces
CN108952844A (zh) * 2018-07-13 2018-12-07 哈尔滨汽轮机厂有限责任公司 一种200mw超高压背压式汽轮机
CN109488397B (zh) * 2018-12-27 2023-08-15 大唐贵州发耳发电有限公司 一种凝汽式汽轮机的轴封溢流汽热量回收系统
CN110847977B (zh) * 2019-11-25 2022-05-10 东方电气集团东方汽轮机有限公司 一种适用于干旱地区的高背压供热系统
CN113464225B (zh) * 2021-07-05 2022-06-21 西安交通大学 带两级蒸汽喷射器的电厂宽负荷运行的系统及方法
CN113914948A (zh) * 2021-10-15 2022-01-11 国能龙源蓝天节能技术有限公司上海分公司 一种利用旁路供热实现热电机组深度调峰的系统以及方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007780B (de) * 1955-06-16 1957-05-09 Hellmut Eickemeyer Dipl Ing Dampfturbinenanlage mit Entnahme von Dampf fuer Heizung
DE1233413B (de) * 1955-07-09 1967-02-02 Siemens Ag Im Regenerativ-Verfahren betriebene Dampfkraftanlage mit einer Kondensationsturbine und einer Gegendruckturbine
DE1513037C3 (de) * 1965-09-10 1975-01-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Dampfkraftanlage zur Versorgung von mindestens zwei elektrischen Netzen
CH635165A5 (de) * 1978-11-09 1983-03-15 Bbc Brown Boveri & Cie Industrie-dampfturbinenanlage.
US4407131A (en) * 1980-08-13 1983-10-04 Battelle Development Corporation Cogeneration energy balancing system
DE4447044C1 (de) * 1994-12-29 1996-04-11 Hans Wonn Verfahren zur Verminderung der Anfahrverluste eines Kraftwerksblockes
CN100494642C (zh) * 2004-08-31 2009-06-03 天津市电力科技发展公司 三低缸三排汽凝汽式汽轮机组热电联产控制方法及装置
EP2305964A1 (fr) * 2009-09-23 2011-04-06 Siemens Aktiengesellschaft Centrale à vapeur
CN102597430A (zh) * 2009-11-02 2012-07-18 西门子公司 具有二氧化碳分离器的燃烧矿物燃料的电厂设备和燃烧矿物燃料电厂设备的运行方法
US9027348B2 (en) * 2009-11-02 2015-05-12 Siemens Aktiengesellschaft Method for retrofitting a fossil-fueled power station with a carbon dioxide separation device
CN102597432A (zh) * 2009-11-02 2012-07-18 西门子公司 具有二氧化碳分离器燃烧矿物燃料的电厂设备和燃烧矿物燃料电厂设备的运行方法
US20110120130A1 (en) * 2009-11-25 2011-05-26 Hitachi, Ltd. Fossil Fuel Combustion Thermal Power System Including Carbon Dioxide Separation and Capture Unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012076355A2 *

Also Published As

Publication number Publication date
RU2013130993A (ru) 2015-01-20
WO2012076355A3 (fr) 2013-07-25
US20130247571A1 (en) 2013-09-26
CN103403303A (zh) 2013-11-20
WO2012076355A2 (fr) 2012-06-14
KR20130139326A (ko) 2013-12-20
DE102010062623A1 (de) 2012-06-14

Similar Documents

Publication Publication Date Title
EP2627874A2 (fr) Rééquipement d'une prise de vapeur de chauffe dans une centrale à combustible fossile
EP2480762B1 (fr) Centrale thermique comprenant vanne de régulation de surcharge
DE102008037410B4 (de) Superkritischen Dampf verwendender kombinierter Kreisprozess und Verfahren
EP2126291B1 (fr) Procédé permettant de faire fonctionner une installation de turbine à gaz et à vapeur et installation de turbine à gaz et à vapeur conçue à cette fin
EP0783619A1 (fr) Procede permettant de faire fonctionner une installation a turbines a gaz et a vapeur, et installation fonctionnant selon ce procede
DE102010042792A1 (de) System zur Erzeugung mechanischer und/oder elektrischer Energie
DE102008029941A1 (de) Dampfkraftanlage und Verfahren zur Regelung der Leistung einer Dampfkraftanlage
EP3006682A1 (fr) Dispositif et procédé de fonctionnement d'une station de transmission thermique
EP2326800A2 (fr) Centrale à vapeur pour produire de l'énergie électrique
EP2224104A1 (fr) Procédé destiné au fonctionnement d'une centrale
WO2007071616A2 (fr) Centrale electrique
EP2611995B1 (fr) Système de turbine à vapeur à alimentation en vapeur variable
WO2015135792A1 (fr) Concept de régulation de l'extraction de chaleur d'une centrale à vapeur, pour chauffage à distance
EP1870646B1 (fr) Procédé et dispositif destinés à la récupération de chaleur de condensation à partir d'un cycle thermodynamique
DE10155508C5 (de) Verfahren und Vorrichtung zur Erzeugung von elektrischer Energie
DE102005034847B4 (de) Dampfkraftwerksanlage
WO2012126727A1 (fr) Procédé de raccordement rapide d'un générateur de vapeur
EP0060860B1 (fr) Systeme a vapeur a distance avec retour commun des condensats et procede pour le refoulement des condensats
WO2018029371A1 (fr) Échangeur de chaleur destiné à être utilisé dans une partie chaude d'une centrale de stockage d'énergie par air liquide, partie chaude et procédé permettant de faire fonctionner ledit échangeur de chaleur dans ladite partie chaude
DE102012108992A1 (de) Verfahren und Vorrichtung zum Betrieb eines luftgekühlten Kondensationsapparates
DE3808006C2 (fr)
WO2016188671A1 (fr) Circuit de vapeur d'eau d'une installation de turbine à gaz et à vapeur
EP2426337A1 (fr) Dispositif de préchauffage de carburant et procédé de préchauffage de carburant
EP3365534B1 (fr) Procédé de préchauffage d'eau d'alimentation d'une chaudière à vapeur d'une centrale électrique et centrale à vapeur pour la mise en oeuvre du procédé
DE102010056585A1 (de) Anordnung zur Temperaturerhöhung von flüssigem Erdgas

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: 20130516

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

R17D Deferred search report published (corrected)

Effective date: 20130725

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140603