EP0573756A2 - Procédé d'incinération de déchets et incinérateur - Google Patents

Procédé d'incinération de déchets et incinérateur Download PDF

Info

Publication number: EP0573756A2
Authority: EP; European Patent Office
Prior art keywords: ash; flue gas; combustion; grate; burnout
Prior art date: 1992-06-12
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP93105913A

Other languages

German (de)

English (en)

Other versions

EP0573756B1 (fr

EP0573756A3 (en

Inventor

Klaus Dr. Horch

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.)

Deutsche Babcock Anlagen AG

Original Assignee

Deutsche Babcock Anlagen 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.)

1992-06-12

Filing date

1993-04-13

Publication date

1993-12-15

1993-04-13 Application filed by Deutsche Babcock Anlagen AG filed Critical Deutsche Babcock Anlagen AG

1993-12-15 Publication of EP0573756A2 publication Critical patent/EP0573756A2/fr

1994-01-12 Publication of EP0573756A3 publication Critical patent/EP0573756A3/de

1995-11-15 Application granted granted Critical

1995-11-15 Publication of EP0573756B1 publication Critical patent/EP0573756B1/fr

2013-04-13 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/107—Furnace arrangements with vibrating grate

Definitions

the invention relates to a method for incinerating waste according to the preamble of claim 1 and a waste incineration plant for carrying out the method according to claim 1 according to the preamble of claim 6.
the device described in DE-OS 1 955 035 has a combustion grate and a burnout grate, both of which are supplied with compressed air.
the air supply through the burnout grate leads to a better burnout of the ashes.
air nozzles for blowing in part of the combustion air are set up as secondary air. Secondary air is used for secondary combustion and thus better combustion of the flue gas.
the additional supply of combustion air be it as primary air through additional grates or as secondary air.
the excess air to maintain high furnace temperatures should be as small as possible.
a further improvement of the burnout enables the z. B. in the DE-Z garbage and waste, 22nd Jg. (1990), pages 288-295, described direct current combustion.
the flue gas is converted to the firing material in cocurrent. that is, waste and ashes.
the flue gas from the gasification area is also led through the hot combustion area.
a good burnout of the flue gas is also caused by the supply of secondary air above the combustion bed, here called upper air, and at the beginning of the first flue gas draft.
the intense flame radiation that acts on the ash from the start of the grate to the end of the grate improves its burnout quality.
Another improvement in ash burnout e.g. B.
the object of the invention is therefore to further develop the method according to the preamble of claim 1 so that the burnout of the ash without impairing the burnout of the flue gas and without great effort.
Another object is to further develop the waste incineration plant according to the preamble of claim 6 so that it is suitable for carrying out the method according to claim 1.
the additional burnout of the ash is brought about in a simple manner with no effort using the hot flue gas containing oxygen in a waste incineration plant.
the flue gas should have temperatures of 800 ° C to 1200 ° C and an oxygen content of 6% to 11%.
the ash is conveyed via an ash burn-out device connected to the combustion grate and, above all, is kept at a high temperature by the radiation effect of the flue gas passed through the ash burn-out device. At these temperatures, the oxygen present in the flue gas is completely sufficient to burn carbon still present in the ashes. The additional burnout therefore takes place without the supply of additional combustion air. 65% to 85% of the combustion air is supplied as primary air or underwind through the combustion grate and the remaining combustion air as secondary air.
the contact between ash and hot, oxygen-containing flue gas on the ash burn-out device is ensured in that the flue gas in the conveying direction of the waste and the ash is first passed through the combustion grate and the ash burn-out device and only above the ash burn-out device into the first flue gas duct.
the supply of secondary air above the combustion grate, but also at the beginning of the first flue gas flue, promotes the exhaust gas burnout by supplying oxygen and by improving the mixture due to the impulse of the air jets and thus increases the radiation effect of the exhaust gas on the ash.
a particularly good additional burn-out of the ash on the ash burn-out device is achieved if the primary air in the conveying direction of the waste is supplied to the combustion grate in at least three stages beforehand. First, an average amount of air per grate area is supplied in the drying stage, a higher amount of air per grate area in the combustion stage and finally a smaller amount of air per grate area in the burnout stage. If the waste is incinerated in these three stages, drying, incineration and burnout, the additional ash burnout on the ash burnout device leads to a further improved burnout quality.
the dwell time of the ash on the ash burn-out device is one fifth to half the time that the waste takes to pass through the combustion grate. With shorter dwell times, only a little additional ash burnout is achieved. Longer dwell times than the specified one have hardly any additional effect.
the dwell time is initially set according to claim 4 depending on the waste composition and preferably changed during operation depending on the burnout quality of the ash and / or the flue gas.
the dwell time of the ash can e.g. B. can be increased by increasing the layer height of the ash on the ash burn-out device by damming the ash.
an ash burn-out device arranged next to the combustion grate in front of the ash removal device, according to the characterizing part of claim 6, provides an additional burn-out of the ash without impairing the burn-out of the flue gas and without great structural effort.
the combustion grate can also be made slightly smaller.
the ash burn-out device has a conveyor device for conveying the ash to the ash removal device.
the conveying surface can also be inclined at a small angle to the horizontal to the ash removal.
the ash burn-out device should have a flat conveying surface.
the conveying surface can also not have channels or troughs that are too deep. It is important that the entire ash is exposed to the thermal radiation of the flue gas as evenly as possible.
the ash burnout device advantageously has a width corresponding to the width of the combustion grate, so that the ash can be easily conveyed from the combustion grill to the ash burnout device.
the arrangement of the inflow opening of the first flue gas flue over the ash burnout device, in conjunction with the combustion chamber ceiling projecting over the combustion grate, enables the hot, oxygen-containing flue gas to be passed over the ash burnout device and brought into contact with the ash for additional burnout.
a space with hot flue gas is formed by this arrangement above the ash burn-out device. The heat radiation from the hot flue gas increases the temperature of the ash on the ash burnout device and thus its burnout.
the feature of claim 7 is particularly suitable for achieving the residence time of the ashes described in claim 3 on the burnout device.
a reduction in the width of the ash burnout device according to claim 8 enables a ash removal device with a smaller width.
the layer height of the ash conveyed above it is simultaneously equalized by shaking.
the conveying surface of the ash burn-out device is exposed to heat radiation and the oxygen from the flue gas, it is advantageously provided with interchangeable wear parts.
a further advantageous equipment against wear are cooling devices according to claim 11.
Figure 1 shows a waste incineration plant and Figure 2 shows an ash burnout device.
a waste incineration plant has a combustion chamber 1 and several flue gas flues 2, in which heating surfaces 3 for the generation of steam and possibly for preheating combustion air are arranged.
a flue gas cleaning system is connected to the last flue gas flue.
the direction of flow of the flue gas is represented by arrows 4 and the direction of conveyance of the waste by arrows 5.
the combustion chamber 1 is equipped with a feed device for waste, a roller grate with five rollers 6, an ash burnout device 7 and a, e.g. B. trained as a plunger, ash removal 8.
the feed device consists of a chute 11 provided with a funnel 9 and a slide 10, which is open in the region of its base 12 to the roller grate and on the base 12 of which there is a ram feeder 13 for conveying the waste onto the roller grate.
a ram feeder 13 for conveying the waste onto the roller grate.
the ash funnels 14 open into a collecting device 15.
the ash burn-out device 7 is connected directly to the fifth roller 6 of the roller grate and ends above an ash shaft 17 opening into the ash removal device 8.
a combustion chamber ceiling 18 extending over the roller grate has approximately the shape of a pointed roof, one leg of the combustion chamber ceiling 18 protruding approximately over the fifth roller 6. This leg of the combustion chamber ceiling 18 separates the combustion chamber 1 from the first flue gas flue 2, which runs obliquely upwards in such a way that its inflow opening 19 is arranged exactly above the ash burnout device 7.
a plurality of air supply devices 20 for secondary air are attached to the firebox ceiling 18.
Air supply devices 21 for secondary air are also located in the area of the inflow opening 19 of the first flue gas flue 2. Additional lines for returning flue gas to the various air supply devices for secondary air or primary air or to their supply lines can also be provided. In this example, at least lines are provided to the air supply devices 21 (not shown).
the ash burnout device 7 is designed as a vibratory conveyor. It has a plate 22 with a flat conveying surface, which is mounted on four elastic elements 23 and with an eccentric drive 24, for. B. a push crank drive is connected. A vibrating motor with internal unbalance can also be used as the drive. It is possible to manufacture the plate 22 from a heat-resistant material.
the conveying surface is preferably provided with a layer 25 of heat-insulating material. As shown in FIG. 2, this layer 25 can consist of wear plates 26, but it could also be a stamped clay. Boundary walls 27 are attached to the sides of the conveying surface parallel to the conveying direction.
the ash burnout device 7 with a cooling device, for. B. with a water cooling system with a feed line 28 and a discharge line 29.
the length of the ash burn-out device 7 is preferably 2 m to 6 m. In this example it is 4 m.
the width of the honeycomb grate, that of the ash burnout device 7 and that of the ash removal device 8 in this example is 3 m in each case.
a roller grate with six or seven rollers can be used.
the width of the ash burnout device 7, starting from the width of the roller grate, takes on a width corresponding to the ash removal device 8, e.g. B. 10% to 20% smaller width, from.
ash burnout devices 7 are arranged parallel to each other in the conveying direction.
the waste e.g. B. household waste, bulky waste, sewage sludge or industrial waste
the funnel 9 in the chute 11 and distributed with the plunger feeder 13 on the first roller 6.
the waste is conveyed through the roller grate, possibly with the supply of primary air and from recirculated flue gas, and burned to ash and flue gas.
the flue gas produced during the combustion is supplied with secondary air and possibly recirculated flue gas above the roller grate through the air inlets 20 in the combustion chamber ceiling 18 and secondary air and / or recirculated flue gas in the area of the inflow opening 19 of the first flue gas duct 2 through the air supply 21.
the excess air n of the total combustion air supplied is 1.4 to 2.0, which corresponds to an oxygen content of 6% to 11% of the flue gas leaving the flue gas flues.
the secondary air portion of 20% is supplied through the air inlets 20 in the combustion chamber ceiling 18. Returned flue gas is supplied through the air supply lines 21 in the region of the inflow opening 19 of the first flue gas train.
the primary air is supplied in a drying stage, a combustion stage and a burnout stage.
an average amount of air per grate surface is created by the first roller 6, in the combustion stage by a second and third roller 6, a larger amount of air per grate surface by a factor of 1.1 to 2 and in the burnout stage by the fourth and fifth roller 6 by a 0.1 to 0.9 lower amount of air per grate area.
combustion and burnout stages are further subdivided.
the grading of the supply of primary air, but also the proportion of primary air, is regulated depending on the combustion behavior, combustion chamber and / or flue gas temperatures and the pollutant content of the flue gas.
the waste is first dried and possibly carbonized before it is burned and finally burned out.
the residence time of the waste and the ashes on the roller grate is 20 minutes to 40 minutes.
the ash is then conveyed through the ash burn-out device 7.
the supply of secondary air generates evenly hot and afterburned flue gas through the air inlets 20 in the combustion chamber ceiling 18 above the roller grate. Due to the shape of the combustion chamber ceiling 18 and the arrangement of the inflow opening 19 of the first flue gas duct 2 above the ash burnout device 7, this flue gas is guided via the roller grate to the ash burnout device 7 and via the ash burnout device 7 into the first flue gas flue 2.
the ash lying on the ash burn-out device 7 is brought into contact with the hot, oxygen-containing flue gas and exposed to the heat radiation of the flue gas flowing into the first flue gas train 2, which is further mixed by the supply of recirculated flue gas, and burned out to a carbon content of less than 1%.
the dwell time of the ash on the ash burn-out device 7 is in the above. Household waste is set to 10 minutes to 30 minutes.
the conveying speed of the ash and thus its dwell time on the ash burn-out device 7 is adjusted during operation by adjusting the shaking frequency, i.e. that is, by adjusting the angular velocity of the drive 24, or by adjusting the angle of the conveying surface to the horizontal depending on the burnout quality of the flue gas or the ash.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Incineration Of Waste (AREA)
Gasification And Melting Of Waste (AREA)

EP93105913A 1992-06-12 1993-04-13 Procédé d'incinération de déchets et incinérateur Expired - Lifetime EP0573756B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4219231		1992-06-12
DE4219231A DE4219231C1 (de)	1992-06-12	1992-06-12	Verfahren zur Verbrennung von Abfall und Abfallverbrennungsanlage

Publications (3)

Publication Number	Publication Date
EP0573756A2 true EP0573756A2 (fr)	1993-12-15
EP0573756A3 EP0573756A3 (en)	1994-01-12
EP0573756B1 EP0573756B1 (fr)	1995-11-15

Family

ID=6460853

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93105913A Expired - Lifetime EP0573756B1 (fr)	1992-06-12	1993-04-13	Procédé d'incinération de déchets et incinérateur

Country Status (3)

Country	Link
EP (1)	EP0573756B1 (fr)
DE (2)	DE4219231C1 (fr)
ES (1)	ES2081155T3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1996030701A1 (fr) *	1995-03-30	1996-10-03	Theodor Koch	Systeme d'incineration
US6138587A (en) *	1995-05-05	2000-10-31	Deutsche Babcock Anlagen Gmbh	Process and furnace for burning refuse
DE10050575A1 (de) *	2000-10-12	2002-04-25	Martin Umwelt & Energietech	Verfahren zum Verbrennen von Abfallprodukten
US8544394B2 (en)	2006-02-07	2013-10-01	Forschungszentrum Karlsruhe Gmbh	Method for reducing nitrogen oxide on the primary side in a two-stage combustion process
CN108644786A (zh) *	2018-06-29	2018-10-12	舟山旺能环保能源有限公司	一种隔热性能好且使用寿命长的垃圾焚烧炉外墙

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0839301B1 (fr) *	1995-07-20	2000-04-05	Forschungszentrum Karlsruhe GmbH	Procede d'incineration de materiaux a traiter thermiquement
DE10063206C2 (de) *	2000-12-19	2002-10-31	Dieter Langer	Feststoff-Brennkammer
DE102006015261B4 (de) *	2006-04-01	2014-10-23	Michaelis Gmbh & Co. Kg	Treppenbettofen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR802952A (fr) *	1936-03-04	1936-09-19	Woodall Duckham 1920 Ltd	Perfectionnements aux foyers destinés à la combustion des combustibles pauvres et spécialement des ordures ménagères
FR1348314A (fr) *	1963-02-25	1964-01-04	Forni Ed Impianti Ind Ingg De Bartolomeis Spa	Perfectionnement apporté aux fours à grilles pour l'incinération des ordures ménagères
DK122141B (da) *	1968-11-04	1972-01-24	Bruun & Soerensen	Ildsted, især til forbrænding af affald.
FR2161269A5 (fr) *	1971-11-19	1973-07-06	Cimab Sa
DE3345867A1 (de) *	1983-12-19	1985-06-27	Wärmetechnik Dr. Pauli GmbH, 8035 Gauting	Verfahren und vorrichtung zur thermischen verwertung von rueckstaenden
DE4027908C2 (de) *	1990-09-03	1996-06-13	Linde Ag	Verbrennungsverfahren und Vorrichtung dafür

1992
- 1992-06-12 DE DE4219231A patent/DE4219231C1/de not_active Expired - Fee Related
1993
- 1993-04-13 EP EP93105913A patent/EP0573756B1/fr not_active Expired - Lifetime
- 1993-04-13 ES ES93105913T patent/ES2081155T3/es not_active Expired - Lifetime
- 1993-04-13 DE DE59300936T patent/DE59300936D1/de not_active Expired - Fee Related

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1996030701A1 (fr) *	1995-03-30	1996-10-03	Theodor Koch	Systeme d'incineration
US6138587A (en) *	1995-05-05	2000-10-31	Deutsche Babcock Anlagen Gmbh	Process and furnace for burning refuse
DE10050575A1 (de) *	2000-10-12	2002-04-25	Martin Umwelt & Energietech	Verfahren zum Verbrennen von Abfallprodukten
EP1197706A3 (fr) *	2000-10-12	2002-07-31	MARTIN GmbH für Umwelt- und Energietechnik	Procédé d'incinération de déchets
US6647902B1 (en)	2000-10-12	2003-11-18	Martin GmbH für Umwelt-und Energietechnik	Process for incinerating waste products
SG101488A1 (en) *	2000-10-12	2004-01-30	Martin Umwelt & Energietech	Process for incinerating waste products
DE10050575B4 (de) *	2000-10-12	2004-07-29	Martin GmbH für Umwelt- und Energietechnik	Verfahren zum Verbrennen von Abfallprodukten
CZ299984B6 (cs) *	2000-10-12	2009-01-14	Martin GmbH für Umwelt-und Energietechnik	Zpusob spalování odpadních produktu
DE10050575C5 (de) *	2000-10-12	2009-10-29	Martin GmbH für Umwelt- und Energietechnik	Verfahren zum Verbrennen von Abfallprodukten
US8544394B2 (en)	2006-02-07	2013-10-01	Forschungszentrum Karlsruhe Gmbh	Method for reducing nitrogen oxide on the primary side in a two-stage combustion process
CN108644786A (zh) *	2018-06-29	2018-10-12	舟山旺能环保能源有限公司	一种隔热性能好且使用寿命长的垃圾焚烧炉外墙
CN108644786B (zh) *	2018-06-29	2023-12-12	舟山旺能环保能源有限公司	一种隔热性能好且使用寿命长的垃圾焚烧炉外墙

Also Published As

Publication number	Publication date
DE4219231C1 (de)	1993-10-21
EP0573756B1 (fr)	1995-11-15
ES2081155T3 (es)	1996-02-16
EP0573756A3 (en)	1994-01-12
DE59300936D1 (de)	1995-12-21

Publication	Publication Date	Title
DE2752609A1 (de)	1978-06-08	Verfahren und vorrichtung zur erzeugung von heizgas
DE2814290A1 (de)	1978-10-19	Verfahren und anlage zur verbrennung von haushaltsabfaellen
EP0716052B1 (fr)	1998-03-04	Installation de fabrication de matériaux en vrac comprenant un dispositif particulier de refroidissement
EP0846917A2 (fr)	1998-06-10	Procédé et appareil pour la production de gaz utilisable à partir de déchets
EP0954722A1 (fr)	1999-11-10	Grille de combustion a refroidissement par eau
WO1985002898A1 (fr)	1985-07-04	Four a combustion et procede de fabrication d'un combustible a partir d'ordures
EP0573756B1 (fr)	1995-11-15	Procédé d'incinération de déchets et incinérateur
DE60122829T2 (de)	2007-03-15	Müllverbrennungsanlage mit Abgasrückführung
WO1986006151A1 (fr)	1986-10-23	Procede et installation d'incineration de dechets
DE3781987T2 (de)	1993-03-11	Ofen.
DE2853729A1 (de)	1979-09-27	Verfahren zum brennen von pellets auf einem wanderrost
DE2639611A1 (de)	1977-03-24	System und verfahren zum regenerieren oder herstellen von aktivkohle
EP0030396B1 (fr)	1983-05-18	Procédé de traitement thermique des pellets
DE2931475C2 (de)	1982-02-25	Mehrstufiges Verfahren zur Calcinierung von Grünkoks, der aus dem Delayed-Coking-Verfahren stammt und Anlage zur Durchführung des Verfahrens
EP0482306A2 (fr)	1992-04-29	Procédé et dispositif pour la combustion des copeaux de bois en produisant des fumées pauvres en substances nocives et à puissance de combustion continûment réglable
DE2614878A1 (de)	1976-10-14	Verfahren und vorrichtung zum verbrennen von muell
EP0473618B1 (fr)	1993-09-22	Dispositif de combustion de biomasses et de matieres solides
DE69002446T2 (de)	1993-12-02	Vorrichtung zum Vergasen fester Brennstoffe.
EP1918015B1 (fr)	2013-03-13	Equilibrage des gaz de fumées dans des installations de combustion de déchets
EP0908674A1 (fr)	1999-04-14	Procédé pour la combustion de déchets dans un incinérateur et pour le traitement des scories provenants de l'incinération
EP0096169A1 (fr)	1983-12-21	Procédé et incinérateur pour l'incinération de combustibles pauvres, notamment des pastilles de déchets
EP0589026B1 (fr)	1998-01-07	Procede et dispositif de regulation de la combustion de combustibles solides dans une installation de combustion
WO2007140885A1 (fr)	2007-12-13	Procédé pour améliorer la qualité des scories de foyers à grille
EP0391146A1 (fr)	1990-10-10	Installation de combustion pour brûler un matériau de combustion, en particulier des ordures
DE10245954B4 (de)	2004-07-22	Verfahren und Einrichtung zur Abfallverarbeitung

Legal Events

Date	Code	Title	Description
1993-10-29	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
1993-11-22	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1993-12-15	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE ES FR GB IT NL
1994-01-12	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE ES FR GB IT NL
1994-03-23	17P	Request for examination filed	Effective date: 19940124
1995-04-05	17Q	First examination report despatched	Effective date: 19950217
1995-09-29	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-11-15	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE ES FR GB IT NL
1995-11-24	ET	Fr: translation filed
1995-12-21	REF	Corresponds to:	Ref document number: 59300936 Country of ref document: DE Date of ref document: 19951221
1996-01-19	ITF	It: translation for a ep patent filed
1996-02-07	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19960106
1996-02-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2081155 Country of ref document: ES Kind code of ref document: T3
1996-09-20	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1996-11-06	26N	No opposition filed
2000-04-18	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20000418 Year of fee payment: 8
2000-04-20	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20000420 Year of fee payment: 8
2000-04-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20000421 Year of fee payment: 8
2000-04-27	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 20000427 Year of fee payment: 8
2000-05-19	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 20000519 Year of fee payment: 8
2001-04-13	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010413
2001-04-14	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: 20010414
2001-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 20010430
2001-11-01	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 NON-PAYMENT OF DUE FEES Effective date: 20011101
2001-12-05	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20010413
2002-01-02	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee	Effective date: 20011101
2002-02-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020201
2002-02-01	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2003-03-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FD2A Effective date: 20030203
2005-04-13	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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050413