EP2531623B1 - Gas purging device - Google Patents

Gas purging device Download PDF

Info

Publication number
EP2531623B1
EP2531623B1 EP10798729.9A EP10798729A EP2531623B1 EP 2531623 B1 EP2531623 B1 EP 2531623B1 EP 10798729 A EP10798729 A EP 10798729A EP 2531623 B1 EP2531623 B1 EP 2531623B1
Authority
EP
European Patent Office
Prior art keywords
gas
purging
purging device
zone
distribution chamber
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.)
Active
Application number
EP10798729.9A
Other languages
German (de)
French (fr)
Other versions
EP2531623A1 (en
Inventor
Bernhard Handle
Bojan Zivanovic
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.)
Refractory Intellectual Property GmbH and Co KG
Original Assignee
Refractory Intellectual Property GmbH and Co KG
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 Refractory Intellectual Property GmbH and Co KG filed Critical Refractory Intellectual Property GmbH and Co KG
Priority to PL10798729T priority Critical patent/PL2531623T3/en
Publication of EP2531623A1 publication Critical patent/EP2531623A1/en
Application granted granted Critical
Publication of EP2531623B1 publication Critical patent/EP2531623B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • 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
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier

Definitions

  • the invention relates to a gas purging device, as used for example in metallurgical melting vessels (such as converter, pan, Tundish) to inject a gas, optionally in combination with finely divided solids in a metallurgical melt.
  • metallurgical melting vessels such as converter, pan, Tundish
  • Gas purging devices usually consist of a refractory ceramic body, in which several channels (with a small flow cross-section) run in the axial direction of the gas purging device. The gas is supplied at one end, passed through the channels and discharged at the other end from the channels into the molten metal.
  • the path of the gas through a gas purging plug of directional porosity is largely linear and often in the axial direction of the gas purging device, although embodiments are known in which the passages are oblique and / or coiled relative to the axial direction of the gas purging device.
  • the refractory ceramic body In gas purging bricks with so-called "undirected porosity", the refractory ceramic body has a high open porosity.
  • the gas thus does not flow through this body along defined channels, but flows from pore to pore from the gas inlet side end to the gas outlet side end, but also this flow path takes place substantially in the axial direction of the gas purging device.
  • the axial direction of the gas purging device this means the main direction in which the gas flows through the purging device.
  • the axial direction is identical to the central longitudinal axis of the gas purging device.
  • Combinations of the mentioned embodiments of gas purging devices are also state of the art ( DE 37 16 388 C1 . DE3110204 A1 . EP233952 A1 ).
  • gas purging bricks with directed Porosity entails the risk of infiltration of molten metal into the gas purging plug along the channels. Similarly, this applies to joint washer.
  • Various measures have been proposed to stop penetrating molten metal. These include so-called breakthrough fuses, with the help of penetrating melt targeted away and / or frozen.
  • a long-proven embodiment results from the EP 0105868 B1
  • a certain disadvantage is that the break-through protection is an additional component to the gas purging plug.
  • the DE 763 185 C describes a method and apparatus for introducing powdered additives into a converter.
  • the transport of the powdery additives is carried out with the aid of a carrier gas in a wind box, is injected into the necessary air through a separate line, the mixture of carrier gas and air with the powdery additives is then promoted by the wind box via converter nozzles in the converter.
  • the invention is based on the object to offer a gas purging device of generic type, which creates a high safety standard and reliably prevents a breakthrough of molten metal.
  • the basic idea of the invention is to design the gas purging device with at least two rinsing zones which, although they can run directly next to one another, are supplied with gas separately.
  • the further idea of the invention consists in using the purge gas supplied to a purge zone, at the same time cooling a gas conduit associated with a further purge zone. This cooling is in normal operation the gas flushing device not necessary; However, it creates the possibility, in the case of infiltration of molten metal in this gas line to freeze the molten metal and thus further penetration of the molten metal and destruction of the Gas purifier to prevent.
  • the invention relates to a gas purging device having a first rinsing zone, which is supplied with gas from a first gas line, and a second rinsing zone, which is supplied with gas by a second gas line, wherein the first and second rinsing zones extend in the axial direction of the gas rinsing device and the first gas conduit has a subsection extending at an angle of 90 ° ⁇ 45 ° to the axial direction of the gas purging device and arranged so as to surround this subsection with the gas supplied via the second gas conduit.
  • the flow direction of the molten metal will basically correspond to the axial direction of the gas purging device.
  • a diversion and thus a slowing down of the flow velocity take place.
  • the reduction of the flow velocity and the increase of the contact surface between said portion and said cooling gas can be optimized if the corresponding portion extends more or less perpendicular (perpendicular) to the axial direction of the gas purging device and is as long as possible.
  • the portion of the first gas conduit may have a ring shape or the shape of a part of a ring.
  • An alternative embodiment provides to make the section of the first gas line meandering.
  • the affected section of the first gas line to be cooled can be guided through a second gas distribution chamber, into which the second gas line opens and from which the second rinsing zone extends.
  • the second gas distribution chamber fulfills a plurality of functions. Firstly, it serves to distribute the gas supplied via the second gas line and thus equalize the pressure conditions before the gas is introduced into the second rinse zone.
  • the volume of the gas distribution chamber can be used to receive the section of the first gas line to be cooled, so that this section can be surrounded on all sides with cooling gas.
  • the cooling effect and thus the safety of the gas purging device is increased if the second gas distribution chamber has no direct fluidic connection to the first rinsing zone. This can be achieved, for example, by sealing the first gas line, with the exception of the partial section to be cooled, with respect to the second gas distribution chamber.
  • the partial section of the first gas line to be cooled can run between sections of the gas line which are aligned with one another.
  • a first, more or less rectilinear, gas supply end of the gas line said subsection joins, for example, in a design that is similar to a ring portion or meandering and opens into another, gas outlet side portion of the gas line, which is aligned with the gas inlet side End of the gas line runs.
  • the gas supplied via the first gas line can open into a first gas distribution chamber from which the first rinsing zone extends.
  • first gas distribution chamber from which the first rinsing zone extends.
  • the first rinse zone may be made of a refractory ceramic material and may have directional or non-directional porosity. It is also possible to form a first purge zone of directional porosity and a second purge zone of undirected porosity. Likewise, both rinse zones may each have directional or non-directional porosity.
  • the gas purging device according to the invention can be formed with more than two rinsing zones, with further rinsing zones either via the gas lines for the first and second rinsing zone are supplied. Or it is possible to provide additional rinse zones via separate gas lines with gas and / or gas / solid mixtures.
  • the arrangement of the individual rinsing zones is basically not critical. However, a compact embodiment results when the second rinse zone concentrically surrounds the first rinse zone.
  • the central, axially extending first rinsing zone can be formed with directed porosity and surrounded by a more or less cylindrical second rinsing zone with undirected porosity.
  • Both rinsing zones can be supplied with gas at the gas inlet end via a respectively assigned gas distribution chamber, wherein according to the invention a gas line runs through a gas distribution chamber and is cooled by the gas, which is flushed in via a further gas line there.
  • the gas flushing device according to FIG. 1 has a cylindrical shape; It could also be designed frustoconically analogous. Concentric with the center longitudinal axis MM, a first cylindrical rinsing zone 10 is provided, along which a plurality of slit-like channels 12 extend from a gas supply-side end 10u to a gas outlet-side end 10o. Below the first rinse zone 10, a first gas distribution chamber 14 is arranged.
  • a second rinse zone 20 Concentric with the first rinse zone 10, there is a second rinse zone 20 of so-called undirected porosity around it, the refractory of this second rinse zone 20 again extending from a gas supply end 20u to a gas outlet end 20o. Below the annular cylindrical second rinsing zone 20, a second gas distribution chamber 24 runs.
  • the gas purging device is surrounded by a metal jacket 30, which merges into a bottom 32, which simultaneously forms lower boundary walls for the gas distribution chambers 14, 24, which are separated from one another by a metal cylinder 34.
  • the second gas distribution chamber 24 opens a second gas line 26 which passes (gas-tight) through the bottom 32 and ends at a distance from the lower end 20u of the second rinse zone 20 so that the gas in the second gas distribution chamber 24 distributed and from there into the open porosity of the second rinse zone 20 can be introduced.
  • the gas then flows through the second rinse zone 20 (in the figure: from bottom to top, ie in the axial direction of the gas purging device), until it leaves the gas purging device at 20 o.
  • a first gas line 16 also opens into the second gas distribution chamber 24, whereby it (gas-tight) passes through the bottom 32, but then continues to run continuously and indeed semicircular in the second gas distribution chamber 24, said portion carries the reference numeral 16t, and then with another Section 16z in the direction of the partition wall 34, passes through this (gas-tight) and then opens in the first gas distribution chamber 14 a.
  • the gas supplied via the line 16 thus flows initially in the axial direction of the gas purging device, is then deflected at 16u, flows substantially perpendicular to the previous flow direction through the second gas distribution chamber 24 before the gas exits in the first gas distribution chamber 14, distributed there and flows through the channels 12 of the first rinse zone 10 from the gas inlet end 10u to the gas outlet end 10o this rinse zone 10 and then leaves.
  • the second gas line 16 is not guided here in the manner of a ring section through the second gas distribution chamber 24. Rather, the subsection 16t extends in a straight line through the second gas distribution chamber 24 and the dividing wall 34 into the first gas distribution chamber 14, adjoined by the first purging zone 10 of directed porosity.
  • the partial section 16t to be cooled extends at an angle of 90 ° ⁇ 45 ° to the axial direction of the gas purging device, the axial direction being defined as the direction corresponding to the main flow direction of the gas, ie substantially parallel to the central longitudinal axis MM the gas purging device, or in other words, the direction between gas inlet side sections 10u, 20u and gas outlet side sections 10o, 20o of the rinse zones 10, 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Furnace Details (AREA)

Description

Die Erfindung betrifft eine Gasspüleinrichtung, wie sie beispielsweise in metallurgischen Schmelzgefäßen (wie Konverter, Pfanne, Tundish) verwendet wird, um ein Gas, gegebenenfalls in Kombination mit fein verteilten Feststoffen, in eine metallurgische Schmelze einzublasen.The invention relates to a gas purging device, as used for example in metallurgical melting vessels (such as converter, pan, Tundish) to inject a gas, optionally in combination with finely divided solids in a metallurgical melt.

Eine Übersicht über verschiedene Bauformen solcher Gasspüleinrichtungen gibt die Radex-Rundschau 1987, Seiten 288 bis 302 . Danach unterscheidet man beispielsweise sogenannte Fugenspüler, Spülsteine mit "ungerichteter Porosität" und Spülsteine mit "gerichteter Porosität".An overview of different Designs of such gas purging devices are the Radex Rundschau 1987, pages 288 to 302 , Thereafter, for example, a distinction is made between so-called joint rinse, rinsing stones with "undirected porosity" and rinsing stones with "directed porosity".

Beim Fugenspüler erfolgt die Gaszufuhr beispielsweise über einen Ringspalt zwischen einem dichten keramischen Körper und einem umfangsseitigen Blechmantel.When Fugenspüler the gas supply takes place for example via an annular gap between a dense ceramic body and a peripheral metal jacket.

Gasspüleinrichtungen (Gasspülsteine) mit so genannter "gerichteter Porosität" bestehen üblicherweise aus einem feuerfesten keramischen Körper, in dem mehrere Kanäle (mit geringem Strömungsquerschnitt) in Axialrichtung der Gasspüleinrichtung verlaufen. Das Gas wird an einem Ende zugeführt, durch die Kanäle geleitet und am anderen Ende aus den Kanälen in die Metallschmelze abgegeben. Der Weg des Gases durch einen Gasspülstein mit gerichteter Porosität ist weitestgehend linear und häufig in Axialrichtung der Gasspüleinrichtung, wenngleich Ausführungsformen bekannt sind, bei denen die Kanäle im Verhältnis zur Axialrichtung der Gasspüleinrichtung schräg und/oder gewendelt verlaufen.Gas purging devices (gas purging bricks) with so-called "directed porosity" usually consist of a refractory ceramic body, in which several channels (with a small flow cross-section) run in the axial direction of the gas purging device. The gas is supplied at one end, passed through the channels and discharged at the other end from the channels into the molten metal. The path of the gas through a gas purging plug of directional porosity is largely linear and often in the axial direction of the gas purging device, although embodiments are known in which the passages are oblique and / or coiled relative to the axial direction of the gas purging device.

Bei Gasspülsteinen mit so genannter "ungerichteter Porosität" weist der feuerfeste keramische Körper eine hohe offene Porosität auf. Das Gas durchströmt diesen Körper also nicht entlang definierter Kanäle, sondern strömt von Pore zu Pore vom gaseinlassseitigen Ende zum gasauslassseitigen Ende, wobei aber auch dieser Strömungsweg im Wesentlichen in Axialrichtung der Gasspüleinrichtung erfolgt.In gas purging bricks with so-called "undirected porosity", the refractory ceramic body has a high open porosity. The gas thus does not flow through this body along defined channels, but flows from pore to pore from the gas inlet side end to the gas outlet side end, but also this flow path takes place substantially in the axial direction of the gas purging device.

Sofern nachstehend von "Axialrichtung der Gasspüleinrichtung" gesprochen wird, so ist damit die Hauptrichtung gemeint, in der das Gas die Spüleinrichtung durchströmt. Bei einem zylinderförmigen beziehungsweise kegelstumpfförmigen Gasspülstein ist die Axialrichtung identisch mit der Mittenlängsachse der Gasspüleinrichtung.If it is referred to below as the "axial direction of the gas purging device", this means the main direction in which the gas flows through the purging device. In the case of a cylindrical or truncated conical gas purging plug, the axial direction is identical to the central longitudinal axis of the gas purging device.

Kombinationen der genannten Ausführungsformen von Gasspüleinrichtungen gehören ebenfalls zum Stand der Technik ( DE 37 16 388 C1 , DE3110204 A1 , EP233952 A1 ). Insbesondere bei Gasspülsteinen mit gerichteter Porosität besteht die Gefahr einer Infiltration von Metallschmelze in den Gasspülstein entlang der Kanäle. Analog gilt dies für Fugenspüler. Es sind verschiedene Maßnahmen vorgeschlagen worden, eindringende Metallschmelze zu stoppen. Dazu gehören so genannte Durchbruchsicherungen, mit deren Hilfe eindringende Schmelze gezielt weggeführt und/oder eingefroren wird.Combinations of the mentioned embodiments of gas purging devices are also state of the art ( DE 37 16 388 C1 . DE3110204 A1 . EP233952 A1 ). Especially with gas purging bricks with directed Porosity entails the risk of infiltration of molten metal into the gas purging plug along the channels. Similarly, this applies to joint washer. Various measures have been proposed to stop penetrating molten metal. These include so-called breakthrough fuses, with the help of penetrating melt targeted away and / or frozen.

Eine seit Langem bewährte Ausführungsform ergibt sich aus der EP 0105868 B1 Ein gewisser Nachteil besteht darin, dass die Durchbruchsicherung ein zusätzliches Bauteil zum Gasspülstein darstellt.A long-proven embodiment results from the EP 0105868 B1 A certain disadvantage is that the break-through protection is an additional component to the gas purging plug.

Die DE 763 185 C beschreibt ein Verfahren und eine Vorrichtung zum Einbringen von pulverförmigen Zusatzstoffen in einen Konverter. Der Transport der pulverförmigen Zusatzstoffe erfolgt mit Hilfe eines Traggases in einen Windkasten, in den notwendige Luft über eine separate Leitung eingeblasen wird, Das Gemisch aus Traggas und Luft mit den pulverförmigen Zusatzstoffen wird dann vom Windkasten über Konverterdüsen in den Konverter gefördert.The DE 763 185 C describes a method and apparatus for introducing powdered additives into a converter. The transport of the powdery additives is carried out with the aid of a carrier gas in a wind box, is injected into the necessary air through a separate line, the mixture of carrier gas and air with the powdery additives is then promoted by the wind box via converter nozzles in the converter.

Die Erfindung liegt die Aufgabe zu Grunde, eine Gasspüleinrichtung der gattungsgernäßen Art anzubieten, die einen hohen Sicherheitsstandard schafft und einen Durchbruch von Metallschmelze zuverlässig verhindert.The invention is based on the object to offer a gas purging device of generic type, which creates a high safety standard and reliably prevents a breakthrough of molten metal.

Der Grundgedanke der Erfindung besteht darin, die Gasspüleinrichtung mit mindestens zwei Spülzonen auszubilden, die zwar unmittelbar nebeneinander verlaufen können, aber getrennt mit Gas versorgt werden. Der weitere Erfindungsgedanke besteht darin, das einer Spülzone zugeführte Spülgas zu nutzen, gleichzeitig eine einer weiteren Spülzone zugeordnete Gasleitung zu kühlen. Diese Kühlung ist im Regelbetrieb der Gasspüleinrichtung nicht notwendig; sie schafft aber die Möglichkeit, im Fall einer Infiltration von Metallschmelze in diese Gasleitung die Metallschmelze einzufrieren und damit ein weiteres Eindringen der Metallschmelze und eine Zerstörung der Gasspüleinrichtung zu verhindern. Die Erfindung hat weiters erkannt, dass dieses Sicherheitsmerkmal nur dann zuverlässig erreicht wird, wenn der gekühlte Teilabschnitt der betroffenen Gasleitung eine Orientierung hat, die von der Axialrichtung der Gasspüleinrichtung abweicht, wobei die Orientierung dieses Teilabschnittes im Wesentlichen senkrecht zur Hauptrichtung der Gasleitung (= Axialrichtung der Gasspüleinrichtung) sein sollte.The basic idea of the invention is to design the gas purging device with at least two rinsing zones which, although they can run directly next to one another, are supplied with gas separately. The further idea of the invention consists in using the purge gas supplied to a purge zone, at the same time cooling a gas conduit associated with a further purge zone. This cooling is in normal operation the gas flushing device not necessary; However, it creates the possibility, in the case of infiltration of molten metal in this gas line to freeze the molten metal and thus further penetration of the molten metal and destruction of the Gas purifier to prevent. The invention has further recognized that this safety feature is reliably achieved only when the cooled section of the gas line concerned has an orientation which deviates from the axial direction of the gas purging device, wherein the orientation of this section substantially perpendicular to the main direction of the gas line (= axial direction of Gas flushing device should be).

In ihrer allgemeinsten Ausführungsform betrifft die Erfindung eine Gasspüleinrichtung mit einer ersten Spülzone, die von einer ersten Gasleitung mit Gas versorgt wird, und eine zweite Spülzone, die von einer zweiten Gasleitung mit Gas versorgt wird, wobei sich erste und zweite Spülzone in Axialrichtung der Gasspüleinrichtung erstrecken und die erste Gasleitung einen Teilabschnitt aufweist, der unter einem Winkel von 90° ± 45° zur Axialrichtung der Gasspüleinrichtung verläuft und so angeordnet ist, dass dieser Teilabschnitt von dem über die zweite Gasleitung zugeführten Gas umspült wird.In its most general embodiment, the invention relates to a gas purging device having a first rinsing zone, which is supplied with gas from a first gas line, and a second rinsing zone, which is supplied with gas by a second gas line, wherein the first and second rinsing zones extend in the axial direction of the gas rinsing device and the first gas conduit has a subsection extending at an angle of 90 ° ± 45 ° to the axial direction of the gas purging device and arranged so as to surround this subsection with the gas supplied via the second gas conduit.

Sofern eine Metallschmelze in die Gasspüleinrichtung eindringt wird die Strömungsrichtung der Metallschmelze grundsätzlich der Axialrichtung der Gasspüleinrichtung entsprechen. Spätestens im Bereich des gekühlten Teilabschnitts der ersten Gasleitung erfolgt dann eine Umlenkung und damit eine Verlangsamung der Strömungsgeschwindigkeit. Durch die Kühlung dieses Teilabschnitts mit Hilfe des Spülgases lässt sich die Viskosität der eingedrungenen Schmelze rasch erhöhen und der weitere Schmelze-Fluss zum Stillstand bringen.If a molten metal penetrates into the gas purging device, the flow direction of the molten metal will basically correspond to the axial direction of the gas purging device. At the latest in the area of the cooled subsection of the first gas line, a diversion and thus a slowing down of the flow velocity take place. By cooling this section using the purge gas can be the viscosity of the melt penetrate rapidly increase and bring the further melt flow to a standstill.

Die Reduzierung der Strömungsgeschwindigkeit und die Erhöhung der Kontakt-Oberfläche zwischen dem genannten Teilabschnitt und dem genannten Kühlgas kann optimiert werden, wenn der entsprechende Teilabschnitt mehr oder weniger rechtwinklig (senkrecht) zur Axialrichtung der Gasspüleinrichtung verläuft und möglichst lang ist.The reduction of the flow velocity and the increase of the contact surface between said portion and said cooling gas can be optimized if the corresponding portion extends more or less perpendicular (perpendicular) to the axial direction of the gas purging device and is as long as possible.

Zu diesem Zweck kann der Teilabschnitt der ersten Gasleitung eine Ringform oder die Form eines Teils eines Rings aufweisen. Eine alternative Ausführungsform sieht vor, den Teilabschnitt der ersten Gasleitung mäanderförmig zu gestalten.For this purpose, the portion of the first gas conduit may have a ring shape or the shape of a part of a ring. An alternative embodiment provides to make the section of the first gas line meandering.

Der betroffene, zu kühlende Teilabschnitt der ersten Gasleitung kann durch eine zweite Gasverteilkammer geführt sein, in die die zweite Gasleitung einmündet und von der sich die zweite Spülzone erstreckt. Bei dieser Ausführungsform erfüllt die zweite Gasverteilkammer mehrere Funktionen: Zum einen dient sie der Verteilung des über die zweite Gasleitung zugeführten Gases und damit einer Vergleichmäßigung der Druckverhältnisse bevor das Gas in die zweite Spülzone eingeführt wird. Zum anderen kann das Volumen der Gasverteilkammer genutzt werden, den zu kühlenden Teilabschnitt der ersten Gasleitung aufzunehmen, so dass dieser Teilabschnitt allseitig mit Kühlgas umspült werden kann.The affected section of the first gas line to be cooled can be guided through a second gas distribution chamber, into which the second gas line opens and from which the second rinsing zone extends. In this embodiment, the second gas distribution chamber fulfills a plurality of functions. Firstly, it serves to distribute the gas supplied via the second gas line and thus equalize the pressure conditions before the gas is introduced into the second rinse zone. On the other hand, the volume of the gas distribution chamber can be used to receive the section of the first gas line to be cooled, so that this section can be surrounded on all sides with cooling gas.

Die Kühlwirkung und damit die Sicherheit der Gasspüleinrichtung wird erhöht, wenn die zweite Gasverteilkammer keine unmittelbare strömungstechnische Verbindung zur ersten Spülzone hat. Dies kann beispielsweise dadurch erreicht werden, indem die erste Gasleitung mit Ausnahme des zu kühlenden Teilabschnitts gegenüber der zweiten Gasverteilkammer abgedichtet wird.The cooling effect and thus the safety of the gas purging device is increased if the second gas distribution chamber has no direct fluidic connection to the first rinsing zone. This can be achieved, for example, by sealing the first gas line, with the exception of the partial section to be cooled, with respect to the second gas distribution chamber.

Dies kann beispielsweise dadurch erreicht werden, indem zwischen der betroffenen Gasleitung und benachbarten Bauteilen eine oder mehrere Dichtungen vorgesehen werden.This can be achieved, for example, by providing one or more seals between the affected gas line and adjacent components.

Der zu kühlende Teilabschnitt der ersten Gasleitung kann zwischen Abschnitten der Gasleitung verlaufen, die miteinander fluchten. Mit anderen Worten: An ein erstes, mehr oder weniger geradliniges, gaszuführseitiges Ende der Gasleitung schließt sich der genannte Teilabschnitt beispielsweise in einer Bauform an, die einem Ringabschnitt ähnelt oder mäanderförmig ist und in einen weiteren, gasauslassseitigen Abschnitt der Gasleitung einmündet, der fluchtend zum gaseinlassseitigen Ende der Gasleitung verläuft.The partial section of the first gas line to be cooled can run between sections of the gas line which are aligned with one another. In other words, a first, more or less rectilinear, gas supply end of the gas line, said subsection joins, for example, in a design that is similar to a ring portion or meandering and opens into another, gas outlet side portion of the gas line, which is aligned with the gas inlet side End of the gas line runs.

Das über die erste Gasleitung zugeführte Gas kann in eine erste Gasverteilkammer münden, von der sich die erste Spülzone erstreckt. Dies gilt selbstverständlich analog für andere Ausführungsformen der ersten Gasleitung.The gas supplied via the first gas line can open into a first gas distribution chamber from which the first rinsing zone extends. Of course, this applies analogously to other embodiments of the first gas line.

Die erste Spülzone kann ebenso wie die zweite Spülzone aus einem feuerfesten keramischen Werkstoff bestehen und eine gerichtete oder ungerichtete Porosität aufweisen. Es ist auch möglich, eine erste Spülzone mit gerichteter Porosität und eine zweite Spülzone mit ungerichteter Porosität auszubilden. Ebenso können beiden Spülzonen jeweils gerichtete oder ungerichtete Porosität aufweisen. Die Gasspüleinrichtung gemäß der Erfindung kann mit mehr als zwei Spülzonen ausgebildet werden, wobei weitere Spülzonen entweder über die Gasleitungen für die erste und zweite Spülzone mit versorgt werden. Oder ist es möglich, weitere Spülzonen über getrennte Gasleitungen mit Gas und/oder Gas-/Feststoffgemischen zu versorgen.The first rinse zone, like the second rinse zone, may be made of a refractory ceramic material and may have directional or non-directional porosity. It is also possible to form a first purge zone of directional porosity and a second purge zone of undirected porosity. Likewise, both rinse zones may each have directional or non-directional porosity. The gas purging device according to the invention can be formed with more than two rinsing zones, with further rinsing zones either via the gas lines for the first and second rinsing zone are supplied. Or it is possible to provide additional rinse zones via separate gas lines with gas and / or gas / solid mixtures.

Die Anordnung der einzelnen Spülzonen ist grundsätzlich nicht entscheidend. Eine kompakte Ausführungsform ergibt sich jedoch, wenn die zweite Spülzone die erste Spülzone konzentrisch umgibt. Dabei kann beispielsweise die mittig, axial verlaufende erste Spülzone mit gerichteter Porosität ausgebildet sein und von einer mehr oder weniger zylinderförmigen zweiten Spülzone mit ungerichteter Porosität umgeben sein. Beide Spülzonen können am gaseinlassseitigen Ende über eine jeweils zugeordnete Gasverteilkammer mit Gas versorgt werden, wobei erfindungsgemäß eine Gasleitung durch eine Gasverteilkammer läuft und von dem Gas, welches über eine weitere Gasleitung dort eingespült wird, gekühlt wird.The arrangement of the individual rinsing zones is basically not critical. However, a compact embodiment results when the second rinse zone concentrically surrounds the first rinse zone. In this case, for example, the central, axially extending first rinsing zone can be formed with directed porosity and surrounded by a more or less cylindrical second rinsing zone with undirected porosity. Both rinsing zones can be supplied with gas at the gas inlet end via a respectively assigned gas distribution chamber, wherein according to the invention a gas line runs through a gas distribution chamber and is cooled by the gas, which is flushed in via a further gas line there.

Weitere Merkmale der Erfindung ergeben sich aus den Merkmalen der Unteransprüche sowie den sonstigen Anmeldungsunterlagen.Other features of the invention will become apparent from the features of the claims and the other application documents.

Die Erfindung wird nachstehend anhand verschiedener Ausführungsbeispiele näher erläutert. Dabei zeigen, jeweils in schematisierter Darstellung:

Figur 1:
Eine erste Ausführungsform einer erfindungsgemäßen Gasspüleinrichtung im Längsschnitt und in einer Ansicht entlang der Linie X-X.
Figur 2:
Eine zweite Ausführungsform der Gasspüleinrichtung im Längsschnitt.
The invention will be explained in more detail below with reference to various embodiments. It shows, in a schematic representation:
FIG. 1:
A first embodiment of a gas purging device according to the invention in longitudinal section and in a view along the line XX.
FIG. 2:
A second embodiment of the gas purging device in longitudinal section.

In den Figuren sind gleiche oder gleichwirkende Bauteile mit gleichen Bezugsziffern dargestellt.In the figures, the same or equivalent components are shown with the same reference numerals.

Die Gasspüleinrichtung gemäß Figur 1 weist eine Zylinderform auf; sie könnte analog auch kegelstumpfförmig gestaltet sein. Konzentrisch zur Mittenlängsachse M-M ist eine erste zylindrische Spülzone 10 vorgesehen, entlang der eine Vielzahl von schlitzartigen Kanälen 12 von einem gaszuführseitigen Ende 10u zu einem gasauslassseitigen Ende 10o verlaufen. Unterhalb der ersten Spülzone 10 ist eine erste Gasverteilkammer 14 angeordnet.The gas flushing device according to FIG. 1 has a cylindrical shape; It could also be designed frustoconically analogous. Concentric with the center longitudinal axis MM, a first cylindrical rinsing zone 10 is provided, along which a plurality of slit-like channels 12 extend from a gas supply-side end 10u to a gas outlet-side end 10o. Below the first rinse zone 10, a first gas distribution chamber 14 is arranged.

Konzentrisch zur ersten Spülzone 10 verläuft um diese herum eine zweite Spülzone 20 mit so genannter ungerichteter Porosität, wobei sich das Feuerfestmaterial dieser zweiten Spülzone 20 wiederum von einem gaszuführseitigen Ende 20u bis zu einem gasauslassseitigen Ende 20o erstreckt. Unterhalb der ringartigen zylindrischen zweiten Spülzone 20 verläuft eine zweite Gasverteilkammer 24.Concentric with the first rinse zone 10, there is a second rinse zone 20 of so-called undirected porosity around it, the refractory of this second rinse zone 20 again extending from a gas supply end 20u to a gas outlet end 20o. Below the annular cylindrical second rinsing zone 20, a second gas distribution chamber 24 runs.

Umfangsseitig wird die Gasspüleinrichtung von einem Blechmantel 30 eingefasst, der in einen Boden 32 übergeht, der gleichzeitig untere Begrenzungswände für die Gasverteilkammern 14, 24 bildet, die über einen Blechzylinder 34 voneinander getrennt sind.On the periphery, the gas purging device is surrounded by a metal jacket 30, which merges into a bottom 32, which simultaneously forms lower boundary walls for the gas distribution chambers 14, 24, which are separated from one another by a metal cylinder 34.

In die zweite Gasverteilkammer 24 mündet eine zweite Gasleitung 26, die entsprechend (gasdicht) durch den Boden 32 verläuft und mit Abstand zum unteren Ende 20u der zweiten Spülzone 20 endet, so dass das Gas in der zweiten Gasverteilkammer 24 verteilt und von dort in die offene Porosität der zweiten Spülzone 20 eingeführt werden kann. Das Gas durchströmt dann die zweite Spülzone 20 (in der Figur: von unten nach oben, also in Axialrichtung der Gasspüleinrichtung), bis es die Gasspüleinrichtung bei 20o verlässt.In the second gas distribution chamber 24 opens a second gas line 26 which passes (gas-tight) through the bottom 32 and ends at a distance from the lower end 20u of the second rinse zone 20 so that the gas in the second gas distribution chamber 24 distributed and from there into the open porosity of the second rinse zone 20 can be introduced. The gas then flows through the second rinse zone 20 (in the figure: from bottom to top, ie in the axial direction of the gas purging device), until it leaves the gas purging device at 20 o.

Eine erste Gasleitung 16 mündet ebenfalls in die zweite Gasverteilkammer 24, wobei auch sie (gasdicht) den Boden 32 durchgreift, verläuft dann aber kontinuierlich weiter und zwar halbkreisförmig in der zweiten Gasverteilkammer 24, wobei dieser Teilabschnitt das Bezugszeichen 16t trägt, und anschließend mit einem weiteren Abschnitt 16z in Richtung auf die Trennwand 34, durchgreift diese (gasdicht) und mündet dann in der ersten Gasverteilkammer 14 ein.A first gas line 16 also opens into the second gas distribution chamber 24, whereby it (gas-tight) passes through the bottom 32, but then continues to run continuously and indeed semicircular in the second gas distribution chamber 24, said portion carries the reference numeral 16t, and then with another Section 16z in the direction of the partition wall 34, passes through this (gas-tight) and then opens in the first gas distribution chamber 14 a.

Das über die Leitung 16 zugeführte Gas strömt demnach zunächst in Axialrichtung der Gasspüleinrichtung, wird dann, bei 16u umgelenkt, strömt im Weiteren im Wesentlichen senkrecht zur bisherigen Strömungsrichtung durch die zweite Gasverteilkammer 24 bevor das Gas in der ersten Gasverteilkammer 14 austritt, sich dort verteilt und durch die Kanäle 12 der ersten Spülzone 10 vom gaseinlassseitigen Ende 10u zum gasauslassseitigen Ende 10o diese Spülzone 10 durchströmt und anschließend verlässt.The gas supplied via the line 16 thus flows initially in the axial direction of the gas purging device, is then deflected at 16u, flows substantially perpendicular to the previous flow direction through the second gas distribution chamber 24 before the gas exits in the first gas distribution chamber 14, distributed there and flows through the channels 12 of the first rinse zone 10 from the gas inlet end 10u to the gas outlet end 10o this rinse zone 10 and then leaves.

Aus der beschriebenen Anordnung ergibt sich, dass das über die zweite Gasleitung 26 zugeführte Gas die erste Gasleitung 16, speziell den Teilabschnitt 16t in der zweiten Gasverteilkammer 24 umströmt und damit kühlt.It results from the described arrangement that the gas supplied via the second gas line 26 flows around the first gas line 16, specifically the partial section 16t in the second gas distribution chamber 24, and thus cools it.

Dies schafft die Möglichkeit Metallschmelze, die über die Gaskanäle 12 eindringt, im Bereich 16t, 16z mit Hilfe des über die Gasleitung 26 zugeführten Gases zu kühlen und einzufrieren und damit die Metallschmelze-Infiltration zu stoppen. Die Abschnitte 16t, 16z haben die Funktion einer integrierten Durchbruchsicherung.This makes it possible to cool and freeze molten metal entering via the gas channels 12 in the region 16t, 16z by means of the gas supplied via the gas line 26 and thus to stop the molten metal infiltration. The sections 16t, 16z have the function of an integrated breakdown protection.

Das gleiche Prinzip wird bei der in Figur 2 dargestellten Ausführungsform angewendet. Die zweite Gasleitung 16 ist hier allerdings nicht nach Art eines Ringabschnitts durch die zweite Gasverteilkammer 24 geführt. Der Teilabschnitt 16t verläuft vielmehr geradlinig durch die zweite Gasverteilkammer 24 und die Trennwand 34 in die erste Gasverteilkammer 14, an die sich nach oben die erste Spülzone 10 mit gerichteter Porosität anschließt.The same principle is used in the FIG. 2 used embodiment illustrated. However, the second gas line 16 is not guided here in the manner of a ring section through the second gas distribution chamber 24. Rather, the subsection 16t extends in a straight line through the second gas distribution chamber 24 and the dividing wall 34 into the first gas distribution chamber 14, adjoined by the first purging zone 10 of directed porosity.

Wesentlich bei beiden Ausführungsformen ist, dass der zu kühlende Teilabschnitt 16t unter einem Winkel von 90° ± 45° zur Axialrichtung der Gasspüleinrichtung verläuft, wobei die Axialrichtung als die Richtung definiert ist, die der Hauptströmungsrichtung des Gases entspricht, also im Wesentlichen parallel zur Mittenlängsachse M-M der Gasspüleinrichtung, oder anders ausgedrückt: Der Richtung zwischen gaseinlassseitigen Abschnitten 10u, 20u und gasauslassseitigen Abschnitten 10o, 20o der Spülzonen 10, 20.It is essential in both embodiments that the partial section 16t to be cooled extends at an angle of 90 ° ± 45 ° to the axial direction of the gas purging device, the axial direction being defined as the direction corresponding to the main flow direction of the gas, ie substantially parallel to the central longitudinal axis MM the gas purging device, or in other words, the direction between gas inlet side sections 10u, 20u and gas outlet side sections 10o, 20o of the rinse zones 10, 20.

Claims (10)

  1. Gas purging device with a first purging zone (10), which is supplied with gas by a first gas pipe (16), and a second purging zone (20), which is supplied with gas by a second gas pipe (26), wherein the first and second purging zone (10,20) extend in axial direction of the gas purging device and the first gas pipe (16) features a segment (16t), which runs at an angle of 90° ± 45° to the axial direction of the gas purging device and is arranged such that this segment (16t) is flushed by the gas supplied by the second gas pipe (26).
  2. Gas purging device according to claim 1, wherein the segment (16t) of the first gas pipe (16) is lead through a second gas distribution chamber (24), into which the second gas pipe (26) enters and from which the second purging zone (20) extends.
  3. Gas purging device according to claim 2, wherein the second gas distribution chamber (24) has no direct flow connection to the first purging zone (10).
  4. Gas purging device according to claim 1 wherein the segment (16t) of the first gas pipe (16) features a ring shape or the shape of a ring segment.
  5. Gas purging device according to claim 1, wherein the segment (16t) of the first gas pipe (16) follows a meandering pattern.
  6. Gas purging device according to claim 1, wherein the segment (16t) of the first gas pipe (16) runs between parts of the gas pipe (16) which align with each other.
  7. Gas purging device according to claim 1, wherein the first gas pipe (16) ends into a first gas distribution chamber (14) from which the first purging zone (10) extends.
  8. Gas purging device according to claim 1, wherein the first purging zone (10) consists of a fireproof ceramic material and features a directed and/or random porosity.
  9. Gas purging device according to claim 1, wherein the second purging zone (20) consists of a fireproof ceramic material and features a directed and/or random porosity.
  10. Gas purging device according to claim 1, wherein the second purging zone (20) surrounds the first purging zone (10) concentrically.
EP10798729.9A 2010-02-05 2010-12-11 Gas purging device Active EP2531623B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10798729T PL2531623T3 (en) 2010-02-05 2010-12-11 Gas purging device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010007126A DE102010007126B3 (en) 2010-02-05 2010-02-05 gas purging
PCT/EP2010/007568 WO2011095193A1 (en) 2010-02-05 2010-12-11 Gas purging device

Publications (2)

Publication Number Publication Date
EP2531623A1 EP2531623A1 (en) 2012-12-12
EP2531623B1 true EP2531623B1 (en) 2014-10-08

Family

ID=43923518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10798729.9A Active EP2531623B1 (en) 2010-02-05 2010-12-11 Gas purging device

Country Status (9)

Country Link
EP (1) EP2531623B1 (en)
JP (1) JP5711269B2 (en)
KR (1) KR20120116456A (en)
CN (1) CN102725427B (en)
DE (1) DE102010007126B3 (en)
ES (1) ES2522532T3 (en)
PL (1) PL2531623T3 (en)
WO (1) WO2011095193A1 (en)
ZA (1) ZA201205605B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102899446A (en) * 2012-11-16 2013-01-30 重庆赛迪工业炉有限公司 Purging device
PL2942406T3 (en) * 2014-05-05 2016-08-31 Refractory Intellectual Property Gmbh & Co Kg Fire resistant ceramic gas flushing element

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763185C (en) * 1938-06-14 1953-02-09 August Thyssen Huette A G Method and device for introducing additives into the converter
DE1027582B (en) * 1953-08-31 1958-04-03 Dynamidon Werk Engelhorn & Co Process for the production of highly refractory bricks
JPS5721667U (en) * 1980-07-09 1982-02-04
DE3110204A1 (en) * 1981-03-17 1982-10-14 Didier-Werke Ag, 6200 Wiesbaden DEVICE FOR INTRODUCING GASES IN METALLURGICAL VESSELS
AT376455B (en) * 1982-10-06 1984-11-26 Oesterr Amerikan Magnesit METALLURGICAL OVEN OR METALLURGICAL TANK
DE8437953U1 (en) * 1984-12-24 1985-09-19 Steuler Industriewerke GmbH, 5410 Höhr-Grenzhausen Gas supply pipe from gas purging units for cast steel ladles
US4754954A (en) * 1986-01-29 1988-07-05 Lazcano Navarro Arturo Refractory device for introducing a gas into a molten metal and a method for making the device
DE3716388C1 (en) * 1987-05-15 1988-10-27 Radex Deutschland Ag Gas flushing stone
JPH03297537A (en) * 1990-04-13 1991-12-27 Nkk Corp Ladle bottom blowing porous brick and method for removing stuck metal to the brick
US5465943A (en) * 1990-12-07 1995-11-14 Veitsch-Radex Aktiengesellschaft Fur Feuerfeste Erzeugnisse Bottom or wall structure for a metallurgical vessel
DE4103837A1 (en) * 1991-02-08 1992-08-13 Plibrico Gmbh Metallurgical vessel blower system - has fireproof perforated brick with charged gas passages contg. fireproof gas washing brick
JPH0656690U (en) * 1992-12-25 1994-08-05 愛知製鋼株式会社 Electric furnace for steelmaking
US6199836B1 (en) * 1998-11-24 2001-03-13 Blasch Precision Ceramics, Inc. Monolithic ceramic gas diffuser for injecting gas into a molten metal bath
JP2002028772A (en) * 2000-07-14 2002-01-29 Daido Steel Co Ltd Porous plug
KR100931159B1 (en) * 2002-11-21 2009-12-10 주식회사 포스코 Forus plug device for ladle
DE10305232B3 (en) * 2003-02-08 2004-08-05 Refractory Intellectual Property Gmbh & Co.Kg Refractory ceramic gas purging plug
JP2006283052A (en) * 2005-03-31 2006-10-19 Jfe Steel Kk Gas-blowing tuyere
DE102008029934B3 (en) * 2008-06-26 2009-06-10 Refractory Intellectual Property Gmbh & Co. Kg Fireproof ceramic gas purging plug

Also Published As

Publication number Publication date
JP5711269B2 (en) 2015-04-30
CN102725427B (en) 2015-04-15
KR20120116456A (en) 2012-10-22
EP2531623A1 (en) 2012-12-12
DE102010007126B3 (en) 2011-07-07
ES2522532T3 (en) 2014-11-14
PL2531623T3 (en) 2015-01-30
ZA201205605B (en) 2013-05-29
CN102725427A (en) 2012-10-10
JP2013519061A (en) 2013-05-23
WO2011095193A1 (en) 2011-08-11

Similar Documents

Publication Publication Date Title
EP2674206B1 (en) Low load distributor
DE102007028438A1 (en) Gas nozzle and reactor hereby
EP0630712B1 (en) Immersion nozzle
EP2531623B1 (en) Gas purging device
DE102011102069B4 (en) Device for granulating plastic
EP2942406B1 (en) Fire resistant ceramic gas flushing element
EP4056819A1 (en) Exhaust gas/reaction agent mixing assembly
EP2703761B1 (en) Gas purging element with its corresponding gas supply line
DE3331483C2 (en) Device for refractory plates of slide gate valves
AT523701B1 (en) Two-component shaft nozzle with reduced tendency to clogging
DE102014107778A1 (en) Segmented outlet trough
DE10115097A1 (en) Device for preventing a vortex effect in the outlet area of a metallurgical melting vessel
DE20107440U1 (en) Calibration sleeve with intensive cooling
WO2010057566A1 (en) Immersion nozzle
EP0558018B1 (en) Refractory ceramic prefabricated element for mounting in a tundish
DE10342498B4 (en) Method and device for thermal exhaust gas purification
EP2276863B1 (en) Fireproof ceramic gas cleaning stone
WO2009033633A1 (en) Refractory ceramic adaptor
DE202013004842U1 (en) Roller for guiding a metal strand or metal strip
DE10246153B3 (en) Assembly to feed additives into a molten polymer flow, for preoriented yarn melt spinning, has a planet wheel pump with planet wheels fitted with feed outflows and selective connections to additives/polymer inflows
EP0166718B1 (en) Method of and installation for continuous casting of metallic melts
EP3452240B1 (en) Gas flushing device
DE2828895A1 (en) METALLURGICAL CONTAINER
DE8911733U1 (en) Nozzle head for a laser milling machine
DE102007032502A1 (en) Method for cooling and lubricating a machine tool and machine tool for carrying out the method

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: 20120717

AK Designated contracting states

Kind code of ref document: A1

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

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: C21C 5/48 20060101AFI20140602BHEP

Ipc: B22D 1/00 20060101ALI20140602BHEP

Ipc: F27D 3/18 20060101ALI20140602BHEP

Ipc: F27D 3/16 20060101ALI20140602BHEP

INTG Intention to grant announced

Effective date: 20140617

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 690658

Country of ref document: AT

Kind code of ref document: T

Effective date: 20141015

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2522532

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20141114

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010008047

Country of ref document: DE

Effective date: 20141120

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 17619

Country of ref document: SK

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20141008

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

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

Ref country code: IS

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: 20150208

Ref country code: LT

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: 20141008

Ref country code: NO

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: 20150108

Ref country code: PT

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: 20150209

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

Ref country code: HR

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: 20141008

Ref country code: RS

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: 20141008

Ref country code: LV

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: 20141008

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: 20150109

Ref country code: CY

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: 20141008

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502010008047

Country of ref document: DE

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

Ref country code: RO

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: 20141008

Ref country code: LU

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: 20141211

Ref country code: DK

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: 20141008

Ref country code: EE

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: 20141008

Ref country code: CZ

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: 20141008

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141008

26N No opposition filed

Effective date: 20150709

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

Effective date: 20150108

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150831

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

Ref country code: LI

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

Effective date: 20141231

Ref country code: IE

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

Effective date: 20141211

Ref country code: CH

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

Effective date: 20141231

Ref country code: GB

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

Effective date: 20150108

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: 20141231

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

Ref country code: SI

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: 20141008

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

Ref country code: SM

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: 20141008

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

Ref country code: MC

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: 20141008

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

Ref country code: BG

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: 20141008

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

Ref country code: MT

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: 20141008

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20101211

Ref country code: TR

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: 20141008

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 690658

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151211

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

Ref country code: AT

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

Effective date: 20151211

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

Ref country code: MK

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: 20141008

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

Ref country code: AL

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: 20141008

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

Ref country code: SK

Payment date: 20231206

Year of fee payment: 14

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

Ref country code: SE

Payment date: 20231220

Year of fee payment: 14

Ref country code: FI

Payment date: 20231220

Year of fee payment: 14

Ref country code: DE

Payment date: 20231214

Year of fee payment: 14

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

Ref country code: PL

Payment date: 20231201

Year of fee payment: 14

Ref country code: BE

Payment date: 20231220

Year of fee payment: 14

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

Ref country code: ES

Payment date: 20240126

Year of fee payment: 14