EP1213553A2 - Positioning device for combustible/oxygen lances - Google Patents

Positioning device for combustible/oxygen lances Download PDF

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Publication number
EP1213553A2
EP1213553A2 EP01128686A EP01128686A EP1213553A2 EP 1213553 A2 EP1213553 A2 EP 1213553A2 EP 01128686 A EP01128686 A EP 01128686A EP 01128686 A EP01128686 A EP 01128686A EP 1213553 A2 EP1213553 A2 EP 1213553A2
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EP
European Patent Office
Prior art keywords
injection lance
positioning device
injection
annular gap
lance
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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
EP01128686A
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German (de)
French (fr)
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EP1213553A3 (en
EP1213553B1 (en
Inventor
Philipe Grognet
Joachim Bosch
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Air Liquide Deutschland GmbH
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Messer Griesheim GmbH
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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
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/22—Arrangements of air or gas supply devices
    • F27B3/225—Oxygen blowing
    • 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
    • F27D3/16—Introducing a fluid jet or current into the charge
    • F27D2003/168—Introducing a fluid jet or current into the charge through a lance
    • F27D2003/169—Construction of the lance, e.g. lances for injecting particles

Definitions

  • the invention relates to a positioning device for fuel / oxygen lances for the input of input and fuel and oxidizing agents, in particular of oxygen or mixtures containing oxygen, in a melting zone for Production of metals, especially cast iron and metal alloys in a furnace shaft of a cupola furnace, according to the features of the generic term of Claim 1.
  • a generic positioning device for an oxygen injection lance is known from DE 196 46 802 A1.
  • this known positioning device can the injection lance equipped with a Laval nozzle to introduce oxygen in a feed channel of a melting furnace opening into a melting zone in Form a shaft furnace of a cupola furnace, to be positioned so that a optimal oxygen is introduced into the coke bed in the melting zone, damage caused by thermal influences of the melting zone the injection lance, for example scaling, is thereby prevented, that the injection lance to the entry nozzle or in the melting zone of the Coke bed with a safety distance of 15 to 20 mm is arranged.
  • the invention is therefore based on the object of a positioning device for To provide injection lances, by means of which the injection lance in the insertion channel opening into the melting zone can be positioned such that an optimal entry of input materials and fuels as well as oxidizing agents into the Melting zone and an automatic process of the injection lance from the Melting zone is possible.
  • This task is performed by a positioning device for injection lances with the Features of claim 1 solved.
  • the positioning device By means of the positioning device according to the invention Guide housing with spring suspension and guide installation arranged injection lance in the opening into the melting zone Feed channel positioned, i.e. the injection lance is by the Flow through the gaseous injection medium in the lance ring gap in Flow direction generated pressure using the centric in a sled chamber to the injection lance arranged guide installation axially in the direction of Melting zone up to a safety distance of 15 - 20 mm from the nozzle edge or proceed to the coke bed in the melting zone and during the Medium entry in the melting zone kept in the operating position.
  • the injection lance After the entry of gaseous input and fuel as well as of the oxidizing agent into the melting zone, the injection lance is replaced by the the spring suspension against the direction of entry on the injection lance Exerted spring pressure automatically from the lance function damaging area of the melting zone in the insertion channel into a rest position withdrawn.
  • the guide housing connected spring suspension preferably consists of a stainless steel coil spring.
  • the guide housing with the in its carriage chamber for moving the Injection lance exist centrally to this guide installation preferably also made of stainless steel.
  • the annular gap has two successive, differently designed inlet sections E and T.
  • the length of the inlet section E is longer than five times the diameter of the injection lance and the length of the Inlet distance T is always larger than the diameter of the annular gap.
  • the positioning device according to the invention for injection lances for the entry of Commodities and fuels as well as oxidizing agents, especially of pure Oxygen or oxygen-containing mixture, in a melting zone of a Melting furnace for the production of metals, in particular cast iron and Metal alloys in a furnace shaft of a cupola furnace ensures a automatic process of the injection lance in a in the melting zone flowing inlet channel, which ensures an optimal gas entry into the Coke bed located in the melting zone and one when the lance is at rest Positioning in the insertion channel to prevent damage or destruction is guaranteed outside the melting zone.
  • This positioning device has a guide housing 1, in the Sled chamber 5, the injection lance 2 connected to a spring suspension 3 is axially movable with a guide installation 4.
  • the injection lance 2 designed with a variable diameter DL has one the gaseous injection medium (feed and fuel as well as oxidizing agents, in particular pure oxygen or oxygen-containing gas mixture) into the melting zone of the furnace with an annular gap with a variable diameter s.
  • the annular gap is in two different inlet sections T and E, variable in length and diameter divided.
  • the length of the inlet section E is greater than five times the diameter DL the injection lance 2 and the length of the inlet section T is greater than the annular gap diameter s to choose.
  • gaseous injection medium generates a pressure acting in the flow direction when flowing through the annular gap in the annular gap diameter s, through which the injection lance 2 by means of the guide installation 4 arranged centrally to the injection lance 2 within the slide chamber 5 of the guide housing 1 up to a safety distance of 15 - 20 mm to the nozzle edge or to the coke bed in the melting zone.
  • the gaseous medium is introduced into the melting zone of the melting furnace via the annular gap diameter s and its end nozzle / s.
  • the injection lance 2 which is now no longer pressurized by the injection medium, is replaced by the spring force of the spring suspension 3 acting counter to the direction of insertion within the slide chamber 5 of the guide housing 1 of the positioning device in order to prevent damage or destruction of the injection lance 2 by thermal influences from the melting zone Distance L is withdrawn into a rest position 2a from the melting zone into the introduction channel.
  • the guide housing 1 and the guide installation 4 preferably consist of Stainless steel, as well as the one with the injection lance 2 and the guide housing 1 connected spring suspension 3, preferably designed as a spiral spring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

The positioning system for lance for injecting a fuel/oxygen mixture into the smelting zone of a smelting oven for metal production, especially cast iron or alloy production using a cupola furnace, comprises a housing (1) with a slide chamber (5). The lance (2) is mounted in this on a spiral spring suspension (3) and can be moved axially by a guide rod (4)

Description

Die Erfindung betrifft eine Positioniereinrichtung für Brennstoff/Sauerstoff-Lanzen zum Eintrag von Einsatz- und Brennstoffen sowie Oxidationsmitteln, insbesondere von Sauerstoff oder sauerstoffhaltigen Gemischen, in eine Schmelzzone zur Erzeugung von Metallen, insbesondere von Gußeisen und Metalllegierungen in einem Ofenschacht eines Kupolofens, nach den Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a positioning device for fuel / oxygen lances for the input of input and fuel and oxidizing agents, in particular of oxygen or mixtures containing oxygen, in a melting zone for Production of metals, especially cast iron and metal alloys in a furnace shaft of a cupola furnace, according to the features of the generic term of Claim 1.

Eine gattungsgleiche Positioniereinrichtung für eine Sauerstoff-Injektionslanze ist aus DE 196 46 802 A 1 bekannt. Mittels dieser bekannten Positioniereinrichtung kann die mit einer Laval-Düse bestückte Injektionslanze zum Eintrag von Sauerstoff in einem in eine Schmelzzone einmündenden Einbringkanal eines Schmelzofens in Form eines Schachtofens eines Kupolofens, so positioniert werden, dass ein optimaler Sauerstoffeintrag in das in der Schmelzzone befindliche Koksbett erfolgt, wobei eine durch thermische Einflüsse der Schmelzzone verursachte Beschädigung der Injektionslanze, beispielsweise eine Verzunderung, dadurch verhindert wird, dass die Injektionslanze zur Eintragsdüse bzw. dem in der Schmelzzone des Schachtofens befindlichen Koksbett mit einem Sicherheitsabstand von 15 bis 20 mm angeordnet ist.A generic positioning device for an oxygen injection lance is known from DE 196 46 802 A1. By means of this known positioning device can the injection lance equipped with a Laval nozzle to introduce oxygen in a feed channel of a melting furnace opening into a melting zone in Form a shaft furnace of a cupola furnace, to be positioned so that a optimal oxygen is introduced into the coke bed in the melting zone, damage caused by thermal influences of the melting zone the injection lance, for example scaling, is thereby prevented, that the injection lance to the entry nozzle or in the melting zone of the Coke bed with a safety distance of 15 to 20 mm is arranged.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Positioniereinrichtung für Injektionslanzen zur Verfügung zu stellen, mittels welcher die Injektionslanze in dem in die Schmelzzone einmündenden Einbringkanal so positioniert werden kann, dass ein optimaler Eintrag von Einsatz- und Brennstoffen sowie Oxidationsmitteln in die Schmelzzone sowie ein selbsttätiges Verfahren der Injektionslanze aus der Schmelzzone möglich ist.The invention is therefore based on the object of a positioning device for To provide injection lances, by means of which the injection lance in the insertion channel opening into the melting zone can be positioned such that an optimal entry of input materials and fuels as well as oxidizing agents into the Melting zone and an automatic process of the injection lance from the Melting zone is possible.

Diese Aufgabe wird durch eine Positioniereinrichtung für Injektionslanzen mit den Merkmalen von Anspruch 1 gelöst.This task is performed by a positioning device for injection lances with the Features of claim 1 solved.

Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen. Advantageous embodiments of the invention are set out in the subclaims remove.

Mittels der erfindungsgemäßen Positioniereinrichtung wird die in deren Führungsgehäuse mit einer Federaufhängung und einem Führungseinbau angeordnete Injektionslanze in dem in die Schmelzzone einmündenden Einbringkanal positioniert, d.h. die Injektionslanze wird durch den beim Durchströmen des gasförmigen Injektionsmediums in dem Lanzenringspalt in Strömungsrichtung erzeugten Druck mittels des in einer Schlittenkammer zentrisch zur Injektionslanze angeordneten Führungseinbaus axial in Richtung der Schmelzzone bis zu einem Sicherheitsabstand von 15 - 20 mm zu der Düsenkante bzw. zu dem in der Schmelzzone befindlichen Koksbett verfahren und während des Mediumeintrags in die Schmelzzone in Betriebsposition gehalten.By means of the positioning device according to the invention Guide housing with spring suspension and guide installation arranged injection lance in the opening into the melting zone Feed channel positioned, i.e. the injection lance is by the Flow through the gaseous injection medium in the lance ring gap in Flow direction generated pressure using the centric in a sled chamber to the injection lance arranged guide installation axially in the direction of Melting zone up to a safety distance of 15 - 20 mm from the nozzle edge or proceed to the coke bed in the melting zone and during the Medium entry in the melting zone kept in the operating position.

Nach Beendigung des Eintrags von gasförmigen Einsatz- und Brennstoffen sowie von dem Oxidationsmittel in die Schmelzzone wird die Injektionslanze durch den von der Federaufhängung entgegen der Eintragsrichtung auf die Injektionslanze ausgeübten Federdruck selbsttätig wieder aus dem die Lanzenfunktion schädigenden Bereich der Schmelzzone in den Einbringkanal in eine Ruheposition zurückgezogen.After the entry of gaseous input and fuel as well as of the oxidizing agent into the melting zone, the injection lance is replaced by the the spring suspension against the direction of entry on the injection lance Exerted spring pressure automatically from the lance function damaging area of the melting zone in the insertion channel into a rest position withdrawn.

Das bisherige manuelle, aus sicherheitstechnischen Gründen nicht unproblematische Zurückziehen der Injektionslanze aus der Schmelzzone, entfällt.The previous manual, for security reasons not there is no problem pulling the injection lance out of the melting zone.

Die zum Zurückziehen der Injektionslanze mit dieser und dem Führungsgehäuse verbundene Federaufhängung besteht vorzugsweise aus einer Edelstahl-Spiralfeder.To withdraw the injection lance with this and the guide housing connected spring suspension preferably consists of a stainless steel coil spring.

Das Führungsgehäuse mit dem in dessen Schlittenkammer zum Verfahren der Injektionslanze zentrisch zu dieser angeordneten Führungseinbau bestehen vorzugsweise ebenfalls aus Edelstahl.The guide housing with the in its carriage chamber for moving the Injection lance exist centrally to this guide installation preferably also made of stainless steel.

Zur Gewährleistung einer homogenen Gasströmung ohne den Gasfluß negativ beeinflussende Wirbelbildung weist der Ringspalt zwei aufeinanderfolgende, unterschiedlich ausgebildete Einlaufstrecken E und T auf.To ensure a homogeneous gas flow without the gas flow negative influencing vortex formation, the annular gap has two successive, differently designed inlet sections E and T.

Diesbezüglich ist es besonders günstig, wenn die Länge der Einlaufstrecke E mehr als das Fünffache des Durchmessers der Injektionslanze beträgt und die Länge der Einlaufstrecke T stets größer als der Durchmesser des Ringspalts ist.In this regard, it is particularly favorable if the length of the inlet section E is longer than five times the diameter of the injection lance and the length of the Inlet distance T is always larger than the diameter of the annular gap.

Durch Versuche wurde folgendes, nachfolgend graphisch dargestellte Verhältnis zwischen dem Injektionslanzen-/Ringspalt-Durchmesser DL/s in Abhängigkeit von dem den Lanzen-Ringspalt durchströmenden Gasvolumenstrom und dessen Strömungsdruck DV gefunden:

Figure 00030001
The following relationship, shown graphically, between the injection lance / annular gap diameter DL / s as a function of the gas volume flow flowing through the lance annular gap and its flow pressure DV was found by experiments:
Figure 00030001

Dieser graphischen Darstellung ist zu entnehmen, dass das Verhältnis von Injektionslanzen- / Ringspalt-Durchmesser DL / s von der Gas-Durchflußmenge und dessen Strömungsdruck DV abhängig ist.It can be seen from this graph that the ratio of Injection lance / annular gap diameter DL / s from the gas flow rate and whose flow pressure DV is dependent.

Zur Berechnung der zum Zurückziehen der in dem Führungsgehäuse federgelagerten Injektionslanze um die Distanz L in Lanzenruheposition erforderlichen Federkonstanten D der Federaufhängung in Abhängigkeit von der Menge und dem Strömungsdrucks DV des durch den Ringspalt der Injektionslanze in die Schmelzzone strömenden Gasvolumenstroms und in Abhängigkeit von der Höhe der Schlittenkammer H sowie in Abhängigkeit von dem Durchmesser der Injektionslanze DL kann folgende Formel Verwendung finden: D = DV x (H2 - DL2)L To calculate the spring constant D of the spring suspension required to retract the injection lance spring-mounted in the guide housing by the distance L in the lance rest position, depending on the quantity and the flow pressure DV of the gas volume flow flowing through the annular gap of the injection lance into the melting zone and depending on the height of the slide chamber H and depending on the diameter of the injection lance DL, the following formula can be used: D = DV x (H 2 - DL 2 ) L

Die erfindungsgemäße Positioniereinrichtung für Injektionslanzen zum Eintrag von Einsatz- und Brennstoffen sowie Oxidationsmitteln, insbesondere von reinem Sauerstoff oder sauerstoffhaltigem Gemisch, in eine Schmelzzone eines Schmelzofens zur Erzeugung von Metallen, insbesondere von Gußeisen und Metalllegierungen in einem Ofenschacht eines Kupolofens, gewährleistet ein selbsttätigen Verfahren der Injektionslanze in einem in die Schmelzzone einmündenden Einbringkanal, wodurch ein optimaler Gaseintrag in das in der Schmelzzone befindliche Koksbett und bei Lanzenruhestellung eine die Beschädigung oder Zerstörung ausschliessende Positionierung in dem Einbringkanal außerhalb der Schmelzzone gewährleistet ist.The positioning device according to the invention for injection lances for the entry of Commodities and fuels as well as oxidizing agents, especially of pure Oxygen or oxygen-containing mixture, in a melting zone of a Melting furnace for the production of metals, in particular cast iron and Metal alloys in a furnace shaft of a cupola furnace ensures a automatic process of the injection lance in a in the melting zone flowing inlet channel, which ensures an optimal gas entry into the Coke bed located in the melting zone and one when the lance is at rest Positioning in the insertion channel to prevent damage or destruction is guaranteed outside the melting zone.

Nachfolgend wird die Erfindung anhand eines in der Zeichnung dargestellten, bevorzugten Ausführungsbeispiel näher erläutert.The invention is described below with reference to a preferred embodiment explained in more detail.

In der einzigen Figur der Zeichnung ist in schematischer Schnittdarstellung eine erfindungsgemäße Positioniereinrichtung für eine Injektionslanze 2 dargestellt.In the single figure of the drawing is a schematic sectional view Positioning device according to the invention for an injection lance 2 shown.

Diese Positioniereinrichtung weist ein Führungsgehäuse 1 auf, in dessen Schlittenkammer 5 die mit einer Federaufhängung 3 verbundene Injektionslanze 2 mit einem Führungseinbau 4 axial verfahrbar angeordnet ist.This positioning device has a guide housing 1, in the Sled chamber 5, the injection lance 2 connected to a spring suspension 3 is axially movable with a guide installation 4.

Die mit einem variablen Durchmesser DL ausgebildete Injektionslanze 2 weist einen das gasförmige Injektionsmedium (Einsatz- und Brennstoffe sowie Oxidationsmittel, insbesondere reiner Sauerstoff oder sauerstoffhaltiges Gasgemisch) in die Schmelzzone des Schmelzofens leitenden Ringspalt mit einem variablen Durchmesser s auf. Zur Gewährleistung einer wirbelfreien, homogenen Gasströmung ist der Ringspalt in zwei unterschiedliche, in Länge und Durchmesser variable Einlaufstrecken T und E unterteilt. Im Ergebnis von Versuchen wurde ermittelt, dass es besonders vorteilhaft ist, die Länge der Einlaufstrecke E größer als das Fünffache des Durchmessers DL der Injektionslanze 2 und die Länge der Einlaufstrecke T größer als den Ringspaltdurchmesser s zu wählen.The injection lance 2 designed with a variable diameter DL has one the gaseous injection medium (feed and fuel as well as oxidizing agents, in particular pure oxygen or oxygen-containing gas mixture) into the melting zone of the furnace with an annular gap with a variable diameter s. To ensure a swirl-free, homogeneous gas flow, the annular gap is in two different inlet sections T and E, variable in length and diameter divided. As a result of trials, it was determined that it was particularly beneficial is, the length of the inlet section E is greater than five times the diameter DL the injection lance 2 and the length of the inlet section T is greater than the annular gap diameter s to choose.

Das von einer Gasquelle unter einem Druck von etwa 0,25 bis ca. 1 bar mit einem Volumenstrom von 25 bis 55 Nm3/h durch eine Ringöffnung 1 a in das Führungsgehäuse 1 in die mittels der Positioniereinrichtung in einem in eine Schmelzzone eines Schmelzofens einmündenden Einbringkanal axial verfahrbaren Injektionslanze 2 eingebrachte, gasförmige Injektionsmedium erzeugt beim Durchströmen des Ringspalts in dem Ringspaltdurchmesser s einen in Strömungsrichtung wirkenden Druck, durch den die Injektionslanze 2 mittels des zentrisch zur Injektionslanze 2 angeordneten Führungseinbaus 4 innerhalb der Schlittenkammer 5 des Führungsgehäuses 1 bis zu einem Sicherheitsabstand von 15 - 20 mm zur Düsenkante bzw. zu dem in der Schmelzzone befindlichen Koksbett axial verfahren wird. Mittels der nunmehr in Betriebsposition befindlichen Injektionslanze 2 wird über den Ringspaltdurchmesser s und dessen stirnseitige Düse/n das gasförmige Medium in die Schmelzzone des Schmelzofens eingetragen. Nach Beendigung des Eintragvorgangs wird die nunmehr nicht mehr durch das Injektionsmedium druckbeaufschlagte Injektionslanze 2 durch die entgegengesetzt zur Eintragungsrichtung wirkende Federkraft der Federaufhängung 3 innerhalb der Schlittenkammer 5 des Führungsgehäuses 1 der Positioniereinrichtung um eine die Beschädigung oder Zerstörung der Injektionslanze 2 durch thermische Einflüsse aus der Schmelzzone verhindernde Distanz L in eine Ruheposition 2a aus der Schmelzzone in den Einbringkanal zurückgezogen.That from a gas source under a pressure of about 0.25 to about 1 bar with a volume flow of 25 to 55 Nm 3 / h through an annular opening 1 a in the guide housing 1 into which opens into a melting zone of a melting furnace by means of the positioning device Introducing channel axially movable injection lance 2, gaseous injection medium generates a pressure acting in the flow direction when flowing through the annular gap in the annular gap diameter s, through which the injection lance 2 by means of the guide installation 4 arranged centrally to the injection lance 2 within the slide chamber 5 of the guide housing 1 up to a safety distance of 15 - 20 mm to the nozzle edge or to the coke bed in the melting zone. By means of the injection lance 2, which is now in the operating position, the gaseous medium is introduced into the melting zone of the melting furnace via the annular gap diameter s and its end nozzle / s. After completion of the insertion process, the injection lance 2, which is now no longer pressurized by the injection medium, is replaced by the spring force of the spring suspension 3 acting counter to the direction of insertion within the slide chamber 5 of the guide housing 1 of the positioning device in order to prevent damage or destruction of the injection lance 2 by thermal influences from the melting zone Distance L is withdrawn into a rest position 2a from the melting zone into the introduction channel.

Das Führungsgehäuse 1 und der Führungseinbau 4 bestehen bevorzugt aus Edelstahl, ebenso wie die mit der Injektionslanze 2 und dem Führungsgehäuse 1 verbundene, vorzugsweise als Spiralfeder ausgebildete Federaufhängung 3. The guide housing 1 and the guide installation 4 preferably consist of Stainless steel, as well as the one with the injection lance 2 and the guide housing 1 connected spring suspension 3, preferably designed as a spiral spring.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Führungsgehäuseguide housing
1a1a
Ringöffnungring opening
22
Injektionslanze (Betriebsposition)Injection lance (operating position)
2a2a
Injektionslanze (Ruheposition)Injection lance (rest position)
33
Federaufhängungspring suspension
44
Führungseinbauinstallation guide
55
Schlittenkammerslide chamber
LL
Rückzugsdistanz InjektionslanzeWithdrawal distance injection lance
TT
Einlaufstreckeinlet section
ss
Durchmesser Ringspalt (Injektionslanze)Ring gap diameter (injection lance)
DLDL
Durchmesser InjektionslanzeInjection lance diameter
Ee
Einlaufstreckeinlet section

Claims (9)

Positioniereinrichtung für Brennstoff/Sauerstoff-Lanzen zum Eintrag von Einsatz- und Brennstoffen sowie Oxidationsmitteln, insbesondere von Sauerstoff oder sauerstoffhaltigen Gemischen, in eine Schmelzzone eines Schmelzofens zur Erzeugung von Metallen, insbesondere von Gußeisen und Metalllegierungen in einem Ofenschacht eines Kupolofens, mittels welcher die Injektionslanze in einem in die Schmelzzone einmündenden Einbringkanal axial verfahrbar angeordnet ist, dadurch gekennzeichnet, daß die Positioniereinrichtung ein Führungsgehäuse aufweist, in dessen Schlittenkammer (5) die mit einer Federaufhängung (3) verbundene Injektionslanze (2) mit einem Führungseinbau (4) axial verschiebbar angeordnet ist.Positioning device for fuel / oxygen lances for the introduction of feedstocks and fuels as well as oxidizing agents, in particular oxygen or oxygen-containing mixtures, into a melting zone of a melting furnace for the production of metals, in particular cast iron and metal alloys in an oven shaft of a cupola furnace, by means of which the injection lance in an introduction channel opening into the melting zone is arranged to be axially displaceable, characterized in that the positioning device has a guide housing, in the slide chamber (5) of which the injection lance (2) connected to a spring suspension (3) is arranged so as to be axially displaceable with a guide installation (4). Positioniereinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der die Injektionslanze (2) axial verfahrbare Führungseinbau (4) zentrisch zur Injektionslanze (2) angeordnet ist.Positioning device according to claim 1, characterized in that the guide installation (4) which is axially movable the injection lance (2) is arranged centrally to the injection lance (2). Positioniereinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die vorzugsweise aus einer Edelstahl-Spiralfeder bestehende Federaufhängung (3) mit der Injektionslanze (2) und mit dem Führungsgehäuse (1) verbunden ist.Positioning device according to claim 1, characterized in that the spring suspension (3) , which preferably consists of a stainless steel spiral spring, is connected to the injection lance (2) and to the guide housing (1). Positioniereinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Führungsgehäuse (1) mit Ringspalt (1a) und der Führungseinbau (4) bevorzugt aus Edelstahl bestehen.Positioning device according to one of the preceding claims, characterized in that the guide housing (1) with an annular gap (1a) and the guide installation (4) preferably consist of stainless steel. Positioniereinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Injektionslanze (2) einen das Injektionsmedium leitenden Ringspalt mit variablen Durchmesser aufweist.Positioning device according to one of the preceding claims, characterized in that the injection lance (2) has an annular gap which guides the injection medium and has a variable diameter. Positioniereinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Ringspalt der Injektionslanze (2) zwei aufeinaderfolgende, die Verwirbelung der Gasströmung verhindernde Einlaufstrecken (E, T) aufweist.Positioning device according to claim 1, characterized in that the annular gap of the injection lance (2) has two successive inlet sections (E, T) which prevent the swirling of the gas flow. Positioniereinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Länge der Einlaufstrecke (E) der Injektionslanze (2) mehr als das Fünffache des Durchmessers (DL) der Injektionslanze (2) beträgt.Positioning device according to one of the preceding claims, characterized in that the length of the inlet section (E) of the injection lance (2) is more than five times the diameter (DL) of the injection lance (2). Positioniereinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Länge der Einlaufstrecke (T) der Injektionslanze (2) größer als der Ringspaltdurchmesser (s) ist.Positioning device according to one of the preceding claims, characterized in that the length of the inlet section (T) of the injection lance (2) is greater than the annular gap diameter (s). Positioniereinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Ringspalt der Injektionslanze (2) einen dem Volumenstrom des Injektionsmediums entsprechenden variablen Durchmesser (s) aufweist.Positioning device according to one of the preceding claims, characterized in that the annular gap of the injection lance (2) has a variable diameter (s) corresponding to the volume flow of the injection medium.
EP01128686A 2000-12-07 2001-12-01 Positioning device for combustible/oxygen lances Expired - Lifetime EP1213553B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10060727 2000-12-07
DE10060727A DE10060727A1 (en) 2000-12-07 2000-12-07 Positioning device for fuel / oxygen lances

Publications (3)

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EP1213553A2 true EP1213553A2 (en) 2002-06-12
EP1213553A3 EP1213553A3 (en) 2003-10-01
EP1213553B1 EP1213553B1 (en) 2005-12-07

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EP (1) EP1213553B1 (en)
AT (1) ATE312327T1 (en)
DE (2) DE10060727A1 (en)

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Publication number Priority date Publication date Assignee Title
CN113878785A (en) * 2021-10-11 2022-01-04 长虹美菱股份有限公司 Annotate material rifle head and have its refrigerator cabinet polyurethane and annotate material system

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GB0910736D0 (en) * 2009-06-22 2009-08-05 Pilkington Group Ltd Improved film thickness measurement

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US3626501A (en) * 1968-03-18 1971-12-07 Atlantic Richfield Co Apparatus for injecting fluid fuel into a blast furnace
US5522916A (en) * 1993-03-03 1996-06-04 L'air Liquids, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and apparatus for injecting liquid oxygen
US5544868A (en) * 1995-07-31 1996-08-13 National Steel Corporation Blow pipe and gas lance for blast furance
DE19646802A1 (en) * 1996-11-13 1998-05-14 Messer Griesheim Gmbh Method and device for operating a shaft furnace

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DE19547885C1 (en) * 1995-12-21 1997-09-11 Beda Oxygentech Armatur Pneumatic holder for lance manipulator
EP1085265A1 (en) * 1999-09-17 2001-03-21 Kemter, Andreas Injection lance for introducing liquid or gaseous media into a flue gas flow

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US3626501A (en) * 1968-03-18 1971-12-07 Atlantic Richfield Co Apparatus for injecting fluid fuel into a blast furnace
US5522916A (en) * 1993-03-03 1996-06-04 L'air Liquids, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and apparatus for injecting liquid oxygen
US5544868A (en) * 1995-07-31 1996-08-13 National Steel Corporation Blow pipe and gas lance for blast furance
DE19646802A1 (en) * 1996-11-13 1998-05-14 Messer Griesheim Gmbh Method and device for operating a shaft furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113878785A (en) * 2021-10-11 2022-01-04 长虹美菱股份有限公司 Annotate material rifle head and have its refrigerator cabinet polyurethane and annotate material system
CN113878785B (en) * 2021-10-11 2024-03-19 长虹美菱股份有限公司 Annotate material rifle head and have its refrigerator cabinet polyurethane notes material system

Also Published As

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EP1213553A3 (en) 2003-10-01
DE50110026D1 (en) 2006-07-20
ATE312327T1 (en) 2005-12-15
EP1213553B1 (en) 2005-12-07
DE10060727A1 (en) 2002-06-27

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