EP0358923A1 - Procédé et appareil pour purifier un gaz brut provenant d'une gazéification de solides - Google Patents

Procédé et appareil pour purifier un gaz brut provenant d'une gazéification de solides Download PDF

Info

Publication number
EP0358923A1
EP0358923A1 EP89114339A EP89114339A EP0358923A1 EP 0358923 A1 EP0358923 A1 EP 0358923A1 EP 89114339 A EP89114339 A EP 89114339A EP 89114339 A EP89114339 A EP 89114339A EP 0358923 A1 EP0358923 A1 EP 0358923A1
Authority
EP
European Patent Office
Prior art keywords
gas
raw gas
gasification
filter
solid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89114339A
Other languages
German (de)
English (en)
Other versions
EP0358923B1 (fr
Inventor
Hartmut Dr. Hederer
Rolf Buchenau
Dieter Victor
Bernard Schleper
Harald Dr. Hoffmann
Rainer Dr. Dürrfeld
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.)
Ruhrkohle Oel und Gas GmbH
Hoechst AG
Original Assignee
Uhde GmbH
Ruhrkohle Oel und Gas GmbH
Hoechst AG
Kloeckner Humboldt Deutz 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 Uhde GmbH, Ruhrkohle Oel und Gas GmbH, Hoechst AG, Kloeckner Humboldt Deutz AG filed Critical Uhde GmbH
Priority to AT89114339T priority Critical patent/ATE92949T1/de
Publication of EP0358923A1 publication Critical patent/EP0358923A1/fr
Application granted granted Critical
Publication of EP0358923B1 publication Critical patent/EP0358923B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/02—Dust removal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/02—Dust removal
    • C10K1/024—Dust removal by filtration

Definitions

  • the invention relates to a method and a device for cleaning raw gas from a solid gasification with contents of granular and dusty solid particles.
  • Solid gasification means in particular the gasification of hard coal or lignite.
  • the coal can be used both as coal dust and as a slurry together with the oxidizing agent, e.g. Air or oxygen-enriched air are fed into the gasification reactor.
  • the hot crude gas obtained can either be passed through the applied coal layer or can be freely discharged in the opposite direction from the gasification reactor.
  • the invention does not relate to the purification of raw gas which is discharged through the abandoned coal layer, but only from that which is freely discharged.
  • Raw gas from solid gasification described above is not free of solids but must be subjected to a separation of the solid parts before further processing. It is necessary to remove the solids before any further treatment of the raw gas, e.g. Separate cooling from this. So far, this demand could not be met or only in an inadequate form.
  • a gas cooler arrangement for cooling the reaction products of a coal gasification reactor is known.
  • the new gas cooler arrangement is intended to separate small ash particles on the pipes of the convective gas cooler.
  • the convective gas cooler comprises at least one ascent for the gas to be cooled.
  • special pipe cleaning agents e.g. Sootblower.
  • the invention is based, to remove the solid particles of any size occurring in the gasification of solids largely before entering cooling devices from the raw gas.
  • the method is carried out in a device which is characterized in that the gasification reactor has a gas outlet in the lower part, to which the gas inflow space adjoins the periphery and is arranged above the fixed bed filter.
  • the advantages achieved by the invention consist, in particular, in that, in terms of process engineering, the coarse and fine cleaning of the crude gas from granular and dusty solid particles takes place immediately one after the other, without interposing vulnerable gas routes or other containers. Because of the continued direct consequence of the strong gas speed reduction after the change in gas direction, the flow through the following filter surface is even.
  • This is also achieved in accordance with the invention in that the raw gas still dust-containing and freed from the granular solid particles flows through an area which is at least 3 times larger than the circular area of the gas outlet pipe from the gasification reactor.
  • the crude gas flows out of the gasification reactor 1, of a freely selectable type, which is not shown completely, via the funnel-shaped crude gas outlet 2 at the bottom of the reactor.
  • the gas storage space 3 is located below the funnel-shaped raw gas outlet 2. From here, the gas must escape radially laterally and upwards into the filter inflow space 4.
  • the granular solid particles contained in the raw gas are not entrained by the gas deflection, but rather are thrown into the ash collecting space 5 at the bottom of the gas storage space due to their centrifugal or gravitational force. From here they are withdrawn in cycles over a lock 6 of known design.
  • the raw gas still contaminated with dust particles of 0 to 200 ⁇ m enters the fixed-bed filter 7, flows through it and collects in the outflow chamber 8 to be fed from here via an outlet 9 to further heat recovery.
  • the temperature of the cleaned raw gas is still above 500 ° C.
  • a radiation cooler 10 is installed in the lower part of the gasification reactor 1 in order to reduce the temperature of the raw gas to 500-700 ° C.
  • the raw gas flows through the radiation cooler without any noticeable deposition of solid particles on the heat exchanger surfaces.
  • the ash collecting space 5 can also be designed as a water bath.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Industrial Gases (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Treating Waste Gases (AREA)
EP89114339A 1988-08-16 1989-08-03 Procédé et appareil pour purifier un gaz brut provenant d'une gazéification de solides Expired - Lifetime EP0358923B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89114339T ATE92949T1 (de) 1988-08-16 1989-08-03 Verfahren und vorrichtung zur reinigung von rohgas aus einer feststoff-vergasung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827702A DE3827702A1 (de) 1988-08-16 1988-08-16 Verfahren und vorrichtung zur reinigung von rohgas aus einer feststoff-vergasung
DE3827702 1988-08-16

Publications (2)

Publication Number Publication Date
EP0358923A1 true EP0358923A1 (fr) 1990-03-21
EP0358923B1 EP0358923B1 (fr) 1993-08-11

Family

ID=6360915

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114339A Expired - Lifetime EP0358923B1 (fr) 1988-08-16 1989-08-03 Procédé et appareil pour purifier un gaz brut provenant d'une gazéification de solides

Country Status (7)

Country Link
EP (1) EP0358923B1 (fr)
JP (1) JPH0291192A (fr)
AT (1) ATE92949T1 (fr)
AU (1) AU620129B2 (fr)
DE (2) DE3827702A1 (fr)
ES (1) ES2045296T3 (fr)
ZA (1) ZA896204B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632122A2 (fr) * 1993-06-03 1995-01-04 Metallgesellschaft Ag Procédé et dispositif pour séparer des scories des gaz chauds de combustion ou gazéification des carburants solides ou liquides
WO2015067769A1 (fr) * 2013-11-08 2015-05-14 Nüsser Ingenieurges. mbH Dispositif de filtration
EP3037164A1 (fr) 2014-12-23 2016-06-29 Haldor Topsøe A/S Réacteur chimique catalytique de séparation de particules et séparateur de particules
WO2019011724A1 (fr) 2017-07-14 2019-01-17 Haldor Topsøe A/S Réacteur chimique catalytique de séparation de particules avec unité filtrante
US10471406B2 (en) 2015-01-05 2019-11-12 Haldor Topsoe A/S Filtration tray for catalytic chemical reactor
WO2020260157A1 (fr) 2019-06-27 2020-12-30 Haldor Topsøe A/S Réacteur catalytique à piège à particules flottant
WO2021219565A1 (fr) 2020-04-27 2021-11-04 Shell Internationale Research Maatschappij B.V. Plateau de sédimentation en phase gazeuse (gps)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9103432U1 (de) * 1991-03-20 1991-06-20 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld Körnerbettfilter
CN109806703B (zh) * 2019-03-11 2020-04-28 西安交通大学 一种含尘油气的除尘装置及除尘方法
EP3976231A4 (fr) * 2019-05-24 2023-10-11 Entegris, Inc. Procédés et systèmes d'adsorption de vapeur organométallique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740134C (de) * 1942-02-19 1943-10-13 Johannes Christiansen Gaserzeuger mit abwaerts gerichtetem Zug
FR981451A (fr) * 1943-04-12 1951-05-28 Sebia Sa Perfectionnements aux générateurs de gazogènes à bois
FR55473E (fr) * 1942-07-20 1952-06-30 Gazogène perfectionné pour l'alimentation des moteurs des véhicules automobiles et autres applications
US4482358A (en) * 1983-03-17 1984-11-13 General Electric Company Granular bed filtering device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE450472C (de) * 1927-10-08 Wilhelm Wurl Pressluft-Wasserabscheider
DE217475C (fr) * 1900-01-01
DE438269C (de) * 1924-01-15 1926-12-13 Bernhard Christoffels Vorrichtung zum Reinigen von Gasen durch schuettbares Filtermaterial
US2493356A (en) * 1943-02-16 1950-01-03 Moore Inc Apparatus for removing dust from gases
GB894761A (en) * 1960-12-14 1962-04-26 Max Berz A cleaning device for dust-carrying gas
DE1916612U (de) * 1964-11-24 1965-05-26 Max Dipl Ing Berz Staubabscheider fuer staubhaltige gase.
DE1507780A1 (de) * 1965-11-24 1970-02-12 Berz Dipl Ing Max Verfahren zum Abscheiden von Stabteilchen aus einem Gasstrom
CH653360A5 (de) * 1980-09-19 1985-12-31 Sulzer Ag Heissgaskuehler an einer kohlevergasungsanlage.
DE3213664A1 (de) * 1982-04-14 1983-10-27 Margraf, Adolf, Dipl.-Ing., 3060 Stadthagen Vorrichtung zur reinigung von staubgasen
DE3223702C2 (de) * 1982-06-25 1984-06-28 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Verfahren zur Erzeugung von Synthesegas und Reaktor zur Durchführung des Verfahrens
DE3311108A1 (de) * 1983-03-26 1984-09-27 Klöckner-Humboldt-Deutz AG, 5000 Köln Filter zur reinigung von gasen
JPS62125818A (ja) * 1985-11-26 1987-06-08 Mitsui Eng & Shipbuild Co Ltd 集塵濾過装置
DD260622A3 (de) * 1986-07-31 1988-10-05 Freiberg Brennstoffinst Verfahren und vorrichtung zur entstaubung und entteerung von rohgas
DE3636467A1 (de) * 1986-10-25 1988-04-28 Kloeckner Humboldt Deutz Ag Filter zur reinigung von gasen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740134C (de) * 1942-02-19 1943-10-13 Johannes Christiansen Gaserzeuger mit abwaerts gerichtetem Zug
FR55473E (fr) * 1942-07-20 1952-06-30 Gazogène perfectionné pour l'alimentation des moteurs des véhicules automobiles et autres applications
FR981451A (fr) * 1943-04-12 1951-05-28 Sebia Sa Perfectionnements aux générateurs de gazogènes à bois
US4482358A (en) * 1983-03-17 1984-11-13 General Electric Company Granular bed filtering device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632122A2 (fr) * 1993-06-03 1995-01-04 Metallgesellschaft Ag Procédé et dispositif pour séparer des scories des gaz chauds de combustion ou gazéification des carburants solides ou liquides
EP0632122A3 (fr) * 1993-06-03 1995-03-22 Metallgesellschaft Ag Procédé et dispositif pour séparer des scories des gaz chauds de combustion ou gazéification des carburants solides ou liquides.
WO2015067769A1 (fr) * 2013-11-08 2015-05-14 Nüsser Ingenieurges. mbH Dispositif de filtration
US10159950B2 (en) 2014-12-23 2018-12-25 Haldor Topsøe As Particle separating catalytic chemical reactor and particle separator
WO2016102270A1 (fr) * 2014-12-23 2016-06-30 Haldor Topsøe A/S Réacteur chimique catalytique de séparation de particules et séparateur de particules
WO2016102342A1 (fr) 2014-12-23 2016-06-30 Haldor Topsøe A/S Réacteur chimique catalytique de séparation de particules et séparateur de particules
EP3037164A1 (fr) 2014-12-23 2016-06-29 Haldor Topsøe A/S Réacteur chimique catalytique de séparation de particules et séparateur de particules
US10328407B2 (en) 2014-12-23 2019-06-25 Haldor Topsøe A/S Particle separating catalytic chemical reactor and particle separator
US10471406B2 (en) 2015-01-05 2019-11-12 Haldor Topsoe A/S Filtration tray for catalytic chemical reactor
WO2019011724A1 (fr) 2017-07-14 2019-01-17 Haldor Topsøe A/S Réacteur chimique catalytique de séparation de particules avec unité filtrante
US10821411B2 (en) 2017-07-14 2020-11-03 Haldor Topsøe A/S Particle separating catalytic chemical reactor with filter unit
WO2020260157A1 (fr) 2019-06-27 2020-12-30 Haldor Topsøe A/S Réacteur catalytique à piège à particules flottant
US11648518B2 (en) 2019-06-27 2023-05-16 Topsoe A/S Catalytic reactor with floating particle catcher
WO2021219565A1 (fr) 2020-04-27 2021-11-04 Shell Internationale Research Maatschappij B.V. Plateau de sédimentation en phase gazeuse (gps)

Also Published As

Publication number Publication date
ATE92949T1 (de) 1993-08-15
DE3827702A1 (de) 1990-02-22
AU620129B2 (en) 1992-02-13
DE3827702C2 (fr) 1993-07-01
ES2045296T3 (es) 1994-01-16
DE58905238D1 (de) 1993-09-16
AU4003089A (en) 1990-02-22
ZA896204B (en) 1990-05-30
JPH0291192A (ja) 1990-03-30
EP0358923B1 (fr) 1993-08-11

Similar Documents

Publication Publication Date Title
DE3102819C2 (fr)
EP0386806B1 (fr) Dispositif pour la séparation de cendres liquides
DE3879706T2 (de) Vorrichtng und verfahren zur behandlung von verfahrensgasen.
EP0412587B1 (fr) Procédé de purification d'un gaz combustible brut provenant de la gazéification de combustibles solides
DE2746975A1 (de) Verfahren zur trennung trockener teilchenfoermiger masse aus einem heissgas
DE2225686A1 (de) Verfahren und Vorrichtung zur Adsorption von Fluor und Fluorverbindungen auf Aluminiumoxyd
EP0358923B1 (fr) Procédé et appareil pour purifier un gaz brut provenant d'une gazéification de solides
DE3340204A1 (de) Verfahren und vorrichtung zur reinigung heisser gase mit waermerueckgewinnung
DE60204353T2 (de) Verfahren und vorrichtung zum vergasen von kohlenstoffhaltigem material
EP1067995B1 (fr) Procede de separation de vapeurs d'anhydride d'acide phtalique d'un flux gazeux
DE2735565A1 (de) Einhitziges verfahren zur erzeugung von im wesentlichen aus kohlenoxid und wasserstoff bestehenden reduktionsgasen fuer erzreduktionen und vorrichtung zu seiner durchfuehrung
DE69618819T2 (de) Wirbelschichtreaktorsystem und methode zu seinem betrieb
DE102011052788A1 (de) Verfahren und Vorrichtung zur Reinigung von Abgasen
DE3240863C2 (de) Verfahren zur Wiedergewinnung von Wärme aus einem Schmelztropfen enthaltenden Gas
EP0407713B1 (fr) Procédé et dispositif pour l'élimination de solides d'un gas
DE3326935A1 (de) Verfahren zur entfernung von schadstoffen aus den abgasen eines drehrohrofens
EP0289741B1 (fr) Procédé et dispositif d'évacuation de matières solides à grain fin et chaud
DE3729192C2 (de) Vorrichtung zur Rückgewinnung der Wärme und zum Reinigen der Abgase bei Nichteisen-Metallbehandlungsanlagen
DE3608241A1 (de) Vorrichtung zur rueckgewinnung von waermeenergie aus einem hochtemperierten abgasstrom
DE2549911A1 (de) Staubsammeleinrichtung
DE1571679C3 (de) Verfahren und Vorrichtung zur gemeinsamen Erzeugung von Koksstaub und Koksgrieß
DE3605971C2 (fr)
EP0046195B1 (fr) Procédé et dispositif pour la séparation d'urée liquide des gaz résiduaires provenant de la synthèse de mélamine
DE2731755A1 (de) Vorrichtung zur reinigung von abluft- und prozessgasstroemen
DE2166912A1 (de) Verfahren und anlage zur verbesserung des filtereffektes an filterflaechen

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): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900515

17Q First examination report despatched

Effective date: 19910425

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

Owner name: HOECHST AKTIENGESELLSCHAFT

Owner name: RUHRKOHLE OEL UND GAS GMBH

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

Owner name: RUHRKOHLE OEL UND GAS GMBH

Owner name: HOECHST AKTIENGESELLSCHAFT

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

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

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

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: 19930811

REF Corresponds to:

Ref document number: 92949

Country of ref document: AT

Date of ref document: 19930815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58905238

Country of ref document: DE

Date of ref document: 19930916

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

Effective date: 19931112

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2045296

Country of ref document: ES

Kind code of ref document: 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

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

Ref country code: FR

Payment date: 19940720

Year of fee payment: 6

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

Ref country code: GB

Payment date: 19940726

Year of fee payment: 6

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

Ref country code: LU

Payment date: 19940801

Year of fee payment: 6

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19940804

Year of fee payment: 6

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

Ref country code: AT

Payment date: 19940816

Year of fee payment: 6

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

Ref country code: ES

Payment date: 19940822

Year of fee payment: 6

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

Ref country code: BE

Payment date: 19940829

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19940831

Year of fee payment: 6

Ref country code: NL

Payment date: 19940831

Year of fee payment: 6

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

Ref country code: DE

Payment date: 19940915

Year of fee payment: 6

EAL Se: european patent in force in sweden

Ref document number: 89114339.8

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: 19950803

Ref country code: GB

Effective date: 19950803

Ref country code: AT

Effective date: 19950803

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

Ref country code: SE

Effective date: 19950804

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19950804

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

Ref country code: LI

Effective date: 19950831

Ref country code: CH

Effective date: 19950831

Ref country code: BE

Effective date: 19950831

BERE Be: lapsed

Owner name: RUHRKOHLE OL UND GAS G.M.B.H.

Effective date: 19950831

Owner name: HOECHST A.G.

Effective date: 19950831

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

Ref country code: NL

Effective date: 19960301

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950803

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

Effective date: 19960430

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960301

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

Ref country code: DE

Effective date: 19960501

EUG Se: european patent has lapsed

Ref document number: 89114339.8

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990601

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: 20050803