EP0832301B1 - Verfahren zur nachverbrennung von bei der vakuumbehandlung von stahl entstehenden reaktionsgasen und vorrichtung zur durchfuhrung des verfahrens. - Google Patents
Verfahren zur nachverbrennung von bei der vakuumbehandlung von stahl entstehenden reaktionsgasen und vorrichtung zur durchfuhrung des verfahrens. Download PDFInfo
- Publication number
- EP0832301B1 EP0832301B1 EP96919573A EP96919573A EP0832301B1 EP 0832301 B1 EP0832301 B1 EP 0832301B1 EP 96919573 A EP96919573 A EP 96919573A EP 96919573 A EP96919573 A EP 96919573A EP 0832301 B1 EP0832301 B1 EP 0832301B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- reaction vessel
- reaction
- steel
- process according
- 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
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C2100/00—Exhaust gas
- C21C2100/02—Treatment of the exhaust gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
- F27D2019/0012—Monitoring the composition of the atmosphere or of one of their components
- F27D2019/0015—Monitoring the composition of the exhaust gases or of one of its components
Definitions
- the invention relates to a method for the afterburning of when decarburizing liquid steel in under vacuum reaction gases arising from standing reaction vessels, being opposite to the direction of flow of the reaction gases Air flow is introduced into the reaction vessel.
- DE 41 30 590 C2 describes a degassing vessel as Reaction vessel for the vacuum treatment of liquid steel described; as can be seen from this document, become particles by the degassing stream of the reaction gases carried away, which leads to the fact that in the upper part of the Reaction vessel and in the area of the connecting line for the Vacuum pump to a strong buildup of Steel splashes comes, such collections also as "Steel bears" are called. These steel bears can be a have considerable weight and finally the upper one Close part of the reaction vessel largely, so that in the general the steel bear in an elaborate manner Burning out must be eliminated.
- FR 1 575 991 used to form the genus describes a method in which a Reaction vessel against the flow direction of the Reaction gases an air stream by means of the bath surface directed lances with a short distance to them is blown in. Blowing in air is one Afterburn is associated, however, due to the Ambient temperature of the blown air generated energy for the prevention of steel deposits in the Reaction vessel not sufficient.
- the invention is therefore based on the object To improve methods of the type mentioned at the outset in such a way that the danger of the formation of steel approaches - bears - in Reaction vessel is further reduced; Furthermore, one should Implementation of an improved process Device can be specified.
- the basic idea of the invention provides that the one arranged in the refractory delivery Air flow from hot air with a There is a temperature between 800 ° C and 1400 ° C.
- the invention has the advantage that hot air due to their own high blowing speed has much higher energy impulse and thus over the Length / height of the reaction vessel against the Direction of flow of the reaction gases penetrates very deep. This creates a sufficiently strong swirling of the Reaction gases associated with the hot air jet, resulting in a better combustion of the reaction gases and a better one Heat transfer to the inside of the wall of the Reaction vessel leads.
- the reason for this is that Air under the usual conditions only with maximum The speed of sound is blown into the reaction vessel can be; the speed of sound is for cold air only at 330 m / s, whereas the speed of sound for Air with a temperature of For example, 1200 ° C is about 800 m / s. Through the So using hot air it is possible to use the air much higher speed into the reaction vessel bring in.
- the amount of air introduced is such that the air from the degassing steel batch calculated amount of reaction gases is completely burned stoichiometrically; it understands yourself that in order to achieve this goal the blow-in Air volume of the amount of reaction gases generated is to be adjusted.
- first period for example, within the first three minutes vacuum decarburization lasting about 12 minutes, about 50% of the Reaction gases are sucked out and during the subsequent another three minutes, another 25% can be suctioned off, it can expedient according to an embodiment of the invention be that introducing air at first Period of vacuum treatment of the liquid steel is concentrated, this first period with the Half of the total duration of treatment can be measured.
- the introduction of air into the Reaction tube only for every 2nd or 3rd batch is made because it may be desirable that the Protect the refractory lining of the reaction vessel thin steel shirt left on the vessel lining should.
- a convenient device for performing the method is aimed at a suitable generator for To provide generation of hot air, and according to the invention the generator is a bed of heat heatable balls made of a refractory material Heating of the air led through the ball bed.
- the ball bed can be heated up after a Embodiment of the invention, a separate burner be provided, or it can be the generator Waste heat can be connected to the reaction vessel, so that the hot air there after the treatment for Heating the ball bed can be used.
- the reaction vessel 10 instructs at its lower end two dip tubes 11 with which the Reaction vessel connected to a steel pan in which there is liquid steel; is in the Reaction vessel via connection 16 for a vacuum pump Vacuum applied, so rises from the not shown Steel pan on the steel bath 12 in the direction of arrow 13 and enters the reaction vessel 10 and continues to flow appropriate treatment or degassing in Direction of arrow 14 back into the steel pan; at this treatment emerge from the steel bath 12 Reaction gases 15, which are directed towards the connection opening 16 flow for the vacuum pump.
- Injection opening 17 In the upper cover of the reaction vessel 10 there is one Injection opening 17, through which in the described Embodiment hot air in the reaction vessel 10 blown in or via that in the reaction vessel 10 current vacuum is sucked into the reaction vessel 10, a flame 19 extending from the injection opening 17 forms, which is surrounded by a hot air column 18 or continues in this.
- the in the Figure 1 relationships are based on a Blown hot air speed of 600 m / s at a flow rate of the reaction gases of 15 m / s, with a total height of the reaction vessel from 10 - 12 m the hot air deep into the reaction vessel 10 penetrates and thus a heat transfer into the lower Ensures the area of the reaction vessel.
- the corresponding vacuum treatment is shown in FIG or the hot air blowing shown each the amount of reaction gas or hot air is plotted over the duration of treatment; this
- the illustration shows the vacuum treatment of a 280 t steel batch basis, and this results in curve 20 of extracted amount of reaction gas over the treatment period of about 12 minutes; the hot air is at a temperature of 1200 ° C in an amount corresponding to curve 21 blown in the time axis, being shown in the Embodiment blowing the hot air on the Half of the treatment time, i.e. limited to 6 minutes is.
- the measured exhaust gas temperature was 1800 ° C, and from this one is calculated for melting one Steel bears available energy of 0.88 GJ, which is sufficient is a steel bear weighing approximately 1.5 tons to melt.
- FIG 3 is an appropriate generator arrangement for Generation of hot air is shown, the associated Generator 22 via a connecting line 23 to the Injection opening 17 for the hot air in the reaction vessel 10 connected; the connecting line 23 is via a Valve 24 can be shut off.
- the generator 22 has a bed 25 of one fireproof material existing balls, being used for Heating of the ball bed 25 a separate, for example, gas-operated burner 26 is provided is, which in turn is connected to the connecting line 23 is.
- An air line 27 also leads into the generator into a lockable by means of a valve 29 Exhaust line 28 and into one by means of a valve 31 lockable inlet line 30 branches.
- the valve is 24 closed, as well as the valve 31 in the inlet line 30; this means that the gas burner 26 is called Exhaust gases flow through the ball bed 25 and over the Exhaust pipe 28 exit with valve 29 open; for the Blowing in hot air, the valve 29 is closed, and valves 31 and 24 are opened; due to the im Reaction vessel 10 prevailing vacuum, the air can now enter generator 22 via lines 30 and 27 and is here on the heated ball bed 25 Brought temperature; the heated hot air then comes out via the connecting line 23 with the valve 24 open in the Reaction vessel 10 via the injection opening 17; is there it is appropriate that the connecting line 23 between the generator 22 and reaction vessel 10 is dimensioned as short as possible.
- the injection opening 17 in the reaction vessel is also like this dimensioned that at the internal pressure to be applied in each case or vacuum in the reaction vessel in each case best possible flow conditions for the entry of the Hot air exist.
- the valve 24 is in both Embodiments depending on the in Reaction vessel 10 prevailing vacuum regulation of amount of hot air to be admitted into the reaction vessel 10 given.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Description
- Fig. 1
- ein Reaktionsgefäß während des Einblasens von Heißluft in einer schematischer Darstellung,
- Fig. 2
- in einem Diagramm das Verhältnis von entstehenden Reaktionsgasen und eingeblasener Luftmenge zur Behandlungsdauer,
- Fig. 3
- einen Generator zur Heißlufterzeugung in Verbindung mit dem Reaktionsgefäß in einer schematischen Darstellung,
- Fig. 4
- den Gegenstand der Figur 3 in einem anderen Ausführungsbeispiel.
Claims (11)
- Verfahren zur Nachverbrennung von bei der Entkohlung von flüssigem Stahl in unter Vakuum stehenden Reaktionsgefäßen entstehenden Reaktionsgasen, wobei entgegen der Strömungsrichtung der Reaktionsgase (15) ein Luftstrom (18) in das Reaktionsgefäß (10) eingebracht wird, dadurch gekennzeichnet, daß der über eine in der Feuerfestzustellung angeordnete Einblasöffnung (17) eingebrachte Luftstrom (18) aus Heißluft mit einer Temperatur zwischen 800° C bis 1400° C besteht.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die eingebrachte Luftmenge derart bemessen ist, daß die aus der zu entgasenden Stahlcharge berechnete Menge an Reaktionsgasen stöchiometrisch vollständig verbrannt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Einbringen von Luft über die gesamte Zeitdauer der Vakuumentgasung des flüssigen Stahls erfolgt.
- Verfahren nach Anpruch 1 oder 2, dadurch gekennzeichnet, daß das Einbringen von Luft auf einen ersten Zeitabschnitt der Vakuumentgasung des flüssigen Stahls beschränkt ist.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß der erste Zeitabschnitt für das Einbringen von Luft etwa auf die Hälfte der Zeitdauer der Vakuumentkohlung des flüssigen Stahls bemessen ist.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Einbringen von Luft in das Reaktionsgefäß (10) bei jeder zweiten Charge vorgenommen wird.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Einbringen von Luft in das Reaktionsgefäß (10) bei jeder dritten Charge vorgenommen wird.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß zur beschleunigten Entkohlung des flüssigen Stahls zusätzlich über eine in das Reaktionsgefäß (10) einfahrbare Lanze Sauerstoff in das Stahlbad eingeblasen wird.
- Vorrichtung zur Durchführung des Verfahrens zur Nachverbrennung von bei der Entkohlung von flüssigem Stahl in unter Vakuum stehenden Reaktionsgefäßen entstehenden Reaktionsgasen nach Anspruch 1, dadurch gekennzeichnet, daß ein der Erzeugung der Heißluft dienender Generator (22) an das Reaktionsgefäß (10) angeschlossen ist und daß der Generator (22) eine Schüttung (25) von durch Wärmezufuhr aufheizbaren Kugeln aus einem feuerfesten Material zur Aufheizung der durch die Kugelschüttung (25) geführten und anschließend in das Reaktionsgefäß (10) eingebrachten Luft aufweist.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß zur Aufheizung der Kugelschüttung (25) ein gesonderter Brenner (26) vorgesehen ist.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß zur Aufheizung der Kugelschüttung der Generator (22) zur Abwärmenutzung an das Reaktionsgefäß (10) angeschlossen ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19518900 | 1995-05-26 | ||
DE19518900A DE19518900C1 (de) | 1995-05-26 | 1995-05-26 | Verfahren zur Nachverbrennung von bei der Vakuumbehandlung von Stahl entstehenden Reaktionsgasen |
PCT/DE1996/000902 WO1996037633A1 (de) | 1995-05-26 | 1996-05-18 | Verfahren zur nachverbrennung von bei der vakuumbehandlung von stahl entstehenden reaktionsgasen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0832301A1 EP0832301A1 (de) | 1998-04-01 |
EP0832301B1 true EP0832301B1 (de) | 1999-03-24 |
Family
ID=7762662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96919573A Expired - Lifetime EP0832301B1 (de) | 1995-05-26 | 1996-05-18 | Verfahren zur nachverbrennung von bei der vakuumbehandlung von stahl entstehenden reaktionsgasen und vorrichtung zur durchfuhrung des verfahrens. |
Country Status (7)
Country | Link |
---|---|
US (1) | US6042633A (de) |
EP (1) | EP0832301B1 (de) |
KR (1) | KR19990021996A (de) |
CN (1) | CN1060526C (de) |
AU (1) | AU5809896A (de) |
DE (1) | DE19518900C1 (de) |
WO (1) | WO1996037633A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020214667A1 (de) * | 2019-11-27 | 2021-05-27 | Sms Group Gmbh | Verfahren zur Nachverbrennung von kohlenmonoxidhaltigen Abgasen aus thermischen Prozessen sowie Nachverbrennungseinrichtung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1014827A (en) * | 1961-08-23 | 1965-12-31 | Yawata Iron & Steel Co | Method of accelerating decarburization of a molten steel by a degassing process using a vacuum container |
FR1575991A (de) * | 1968-07-08 | 1969-07-25 | ||
JPH01195239A (ja) * | 1988-01-29 | 1989-08-07 | Kawasaki Steel Corp | 真空脱ガス槽内加熱方法およびその装置 |
CA1337846C (en) * | 1988-06-21 | 1996-01-02 | Hiroshi Nishikawa | Process for vacuum degassing and decarbonization with temperature drop compensating feature |
JPH0737644B2 (ja) * | 1990-01-31 | 1995-04-26 | 川崎製鉄株式会社 | 真空脱ガス装置排ガスダクト内スプラツシユ付着防止方法 |
DE4130590C2 (de) * | 1991-09-12 | 1993-11-04 | Mannesmann Ag | Entgasungsgefaess fuer die vakuumbehandlung von fluessigem stahl |
DE4221266C1 (de) * | 1992-06-26 | 1993-10-21 | Mannesmann Ag | Verfahren und Vorrichtung zum Aufblasen von Sauerstoff auf Metallschmelzen |
-
1995
- 1995-05-26 DE DE19518900A patent/DE19518900C1/de not_active Expired - Fee Related
-
1996
- 1996-05-18 WO PCT/DE1996/000902 patent/WO1996037633A1/de not_active Application Discontinuation
- 1996-05-18 KR KR1019970708471A patent/KR19990021996A/ko not_active Application Discontinuation
- 1996-05-18 AU AU58098/96A patent/AU5809896A/en not_active Abandoned
- 1996-05-18 CN CN96195621A patent/CN1060526C/zh not_active Expired - Fee Related
- 1996-05-18 US US09/029,568 patent/US6042633A/en not_active Expired - Fee Related
- 1996-05-18 EP EP96919573A patent/EP0832301B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6042633A (en) | 2000-03-28 |
KR19990021996A (ko) | 1999-03-25 |
DE19518900C1 (de) | 1996-08-08 |
CN1190996A (zh) | 1998-08-19 |
CN1060526C (zh) | 2001-01-10 |
AU5809896A (en) | 1996-12-11 |
EP0832301A1 (de) | 1998-04-01 |
WO1996037633A1 (de) | 1996-11-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69922441T2 (de) | Kohärenter Überschallgasstrahl zum Zuführen von Gas in eine Flüssigkeit | |
EP0341436A2 (de) | Verfahren und Vorrichtung zum Kühlen eines heissen Produktgases, das klebrige bzw. schmelzflüssige Partikel enthält | |
DE1401853C3 (de) | Gasbrenner für Tieföfen | |
DE2952065A1 (de) | Verfahren zur trockenkuehlung von koks und kokskuehleinrichtung zur durchfuehrung des verfahrens | |
DE3931392A1 (de) | Verfahren und vorrichtung zum zumindest zeitweise gleichzeitigen beaufschlagen einer metallschmelze mit einem gas und feinkoernigen feststoffen | |
DE1408802B1 (de) | Einrichtung zum Gewinnen von Konverterabgasen | |
DE1286525B (de) | Verfahren und Vorrichtung zum Behandeln eines schlackenbedeckten geschmolzenen Metallbades mittels eines Gasstromes | |
EP1080236B1 (de) | Variabel einsetzbare kombilanze mit verschiebbaren brenner- und blaslanzenkörpern | |
DE3041467A1 (en) | Method of torch gunite of linings of metallurgical installations | |
EP0066539A1 (de) | Vorrichtung zur Wärmebehandlung von Schrott | |
EP0832301B1 (de) | Verfahren zur nachverbrennung von bei der vakuumbehandlung von stahl entstehenden reaktionsgasen und vorrichtung zur durchfuhrung des verfahrens. | |
DE1924812C3 (de) | Brennerlanze für einen metallurgischen Ofen und Verfahren zum Betreiben eines solchen Ofens mit dieser Brennerlanze | |
DE1178767B (de) | Verfahren zur Beheizung von Brennoefen der Grobkeramik und Brennofen mit Vorrichtung zur Durchfuehrung dieses Verfahrens | |
DE3819803C1 (de) | ||
DE2018044B2 (de) | Verfahren und vorrichtung zum thermochemischen flaemmen | |
DE1904442B2 (de) | Verfahren zum vakuumfrischen von metallschmelzen | |
DE3043127A1 (de) | Anordnung zur regelung der konvertergasabsaugung | |
DE2040824C2 (de) | Verfahren zur Verhinderung der Entwicklung von braunem Rauch beim Frischen von Roheisen in einem bodenblasenden Konverter | |
DE1270059B (de) | Herdofen, insbesondere Siemens-Martin-Ofen | |
AT233037B (de) | Lanze zur Behandlung schlackenbedeckter Metallbäder mit einem gasförmigen oder gasgetragenen Behandlungsmittel | |
DE2953897C1 (de) | Verfahren zur Sauerstoff-Flussmittel-Reinigung von Metallen und Vorrichtung zu seiner Durchfuehrung | |
DE2026586C3 (de) | Verfahren zum Härten eines Turbinenläüfers oder einer Walze | |
DE252457C (de) | ||
DE3819031C1 (de) | ||
DE2404288A1 (de) | Verfahren zur wiedergewinnung von reaktionsgassen aus mittels reinem sauerstoff bodengeblasenen und mit kohlenwasserstoffen gekuehlten stahlkonvertern sowie vorrichtung |
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: 19971104 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE FR GB IT LU |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 19980703 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE FR GB IT LU |
|
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: 19990518 |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO' E ZANARDO MILANO S.P.A. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19990514 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP Ref country code: FR Ref legal event code: CJ Ref country code: FR Ref legal event code: CD Ref country code: FR Ref legal event code: CA |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20090717 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20090713 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20090731 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20090728 Year of fee payment: 14 |
|
BERE | Be: lapsed |
Owner name: SIEMENS VAI METALS TECHNOLOGIES G.M.B.H. Effective date: 20100531 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20100518 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20110131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100531 Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100518 |
|
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: 20100531 |
|
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: 20100518 |