EP0296188A1 - Process and device for introducing additives into a cupola or shaft furnace. - Google Patents

Process and device for introducing additives into a cupola or shaft furnace.

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Publication number
EP0296188A1
EP0296188A1 EP88900009A EP88900009A EP0296188A1 EP 0296188 A1 EP0296188 A1 EP 0296188A1 EP 88900009 A EP88900009 A EP 88900009A EP 88900009 A EP88900009 A EP 88900009A EP 0296188 A1 EP0296188 A1 EP 0296188A1
Authority
EP
European Patent Office
Prior art keywords
additive
combustion air
furnace
shaft
nozzle arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88900009A
Other languages
German (de)
French (fr)
Other versions
EP0296188B1 (en
Inventor
Rolf Rietzscher
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.)
Georg Fischer AG
Original Assignee
Georg Fischer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georg Fischer AG filed Critical Georg Fischer AG
Priority to AT88900009T priority Critical patent/ATE62339T1/en
Publication of EP0296188A1 publication Critical patent/EP0296188A1/en
Application granted granted Critical
Publication of EP0296188B1 publication Critical patent/EP0296188B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F27B1/16—Arrangements of tuyeres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal

Definitions

  • the present invention relates to a method and a device for introducing at least one additive, in particular an energy source, into a shaft or cupola furnace, in which combustion air is blown into a furnace shaft via nozzles.
  • the invention also relates to the use of the method and the device for the purposes of disposal.
  • a method for introducing at least one additive, in particular an energy source, into a blast furnace is known.
  • the additive is fed into the combustion air flow and brought with it into the furnace shaft, the additive being sucked into the furnace by the combustion air by generating a negative pressure directly at the point of exit of the additive into the combustion air stream.
  • the vacuum can break down by changing the internal furnace resistance
  • a counter pressure can be built up by certain control processes in the exhaust system, whereby the negative pressure in the intake manifold breaks down. This condition can lead to blockages in the coal dust supply part.
  • This object is achieved according to the invention by a method in which the respective additive is passed into the combustion air flow and brought with it into the furnace shaft, the additive from the combustion air into the furnace shaft being generated directly at the outlet point of the additive into the combustion air flow is sucked.
  • the device proposed for carrying out the method is characterized by an injector nozzle arrangement which is provided in the feed line of the combustion air flow and has a pipeline around which the combustion air flows, one end is connected to a treasure container for the additive and the other end projects into a constriction area of the cross section of the through-channel in the furnace wall.
  • the figure shows a furnace wall 1 of a (not shown) shaft or cupola furnace, in which the fired material is fed in at the upper end of the shaft.
  • the fuel passes through the preheating zone, which is heated by the fuel gases, and finally reaches the combustion zone below.
  • a number of supply lines are arranged circumferentially in the combustion zone of the shaft, via which the combustion zone is supplied with hot air.
  • This hot air which also serves as an oxidizing agent, enters the combustion zone very quickly, ie generally at a speed between 200 and 300 m / s.
  • An insert 2 preferably made of a metallic material with a through channel 2a, is arranged in the furnace wall 1.
  • An injector nozzle 7 is arranged in the supply duct 3. The injector nozzle 7 is charged with a provided additive via a feed pipe 4. It is an open funding system that works without the support of a grant. Only a metering device, not shown, ensures the continuous supply of the additive.
  • An insert 5 is provided in the through channel 2a.
  • the passage cross section of the insert 5 widens from a smallest radius 6 to the openings 5a and 5b.
  • the end of the injector nozzle reaching into the furnace extends into the area of the narrowest cross section of the through-channel of the insert 5.
  • a constant negative pressure is created under continuous flow conditions. This negative pressure leads to a suction effect, so the additive supplied via the injector nozzle 7 is, as it were, sucked out of the nozzle in the vacuum region. Since the speed of the hot wind flowing around the injector nozzle is increased in the area of the cross-sectional constriction, the additive is conveyed into the combustion zone of the furnace shaft at the speed of the hot wind.
  • the system must be supported with an additional injector system 8 in order to ensure that a set amount of additive, e.g. Carbon (C), always reached the firing zone in the furnace.
  • the injector system 8 works with compressed air support, whereby the compressed air can be preheated.
  • the suction system described can be operated continuously without problems and can also be loaded with different consistencies, such as fine dust and granules.
  • coal dust, granules up to a grain size of 10 mm can be used as additives.
  • the process also allows problematic substances that have to be burned at certain temperatures so as not to pollute the environment with undesired emissions.
  • the use of the method and the device according to the invention can lead to a reduction in the conventional fuel content, e.g. Coke, lead from 30% and more.
  • the system described is also suitable for the disposal of pollutants.
  • Pollutants e.g. Fully absorbent fuels, such as petroleum coke or graphite soaked with liquid waste (e.g. condenser oil), or waste dust and phenolic or hydrocarbon-containing problematic substances mixed with

Abstract

PCT No. PCT/CH87/00173 Sec. 371 Date Oct. 16, 1989 Sec. 102(e) Date Oct. 16, 1989 PCT Filed Dec. 23, 1987 PCT Pub. No. WO88/05149 PCT Pub. Date Jul. 14, 1988.A process and device for introducing additives, in particular energy carriers, into a cupola or shaft furnace. The additive is carried with combustion air stream and introduced therewith in the furnace shaft, a depression being created at the point where the additive is fed into the combustion air stream, so that the additive is aspirated by the combustion air into the combustion area of the furnace shaft.

Description

Verfahren und Vorrichtung zum Einbringen von Zusatzstoffen in einen Schacht- bzw. KuoolofenMethod and device for introducing additives into a shaft or Kuoolofen
Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung zum Einbringen von mindestens einem Zusatzstoff, insbesondere eines Energieträgers in einen Schacht- bzw. Kupolofen, bei dem Verbrennungsluft über Düsen in einen Ofenschacht geblasen wird. Die Erfindung betrifft aber auch die Verwendung des Verfahrens und der Vorrichtung für Zwecke der Entsorgung.The present invention relates to a method and a device for introducing at least one additive, in particular an energy source, into a shaft or cupola furnace, in which combustion air is blown into a furnace shaft via nozzles. However, the invention also relates to the use of the method and the device for the purposes of disposal.
Die Einbringung von Zusatzstoffen in einen Kupolofen ist allgemein bekannt. Dabei werden zwei Ziele verfolgt, nämlich die Verringerung des Verbrauchs metallurgischen Kckses sowie die Steuerung des Betriebes eines Kupolofens.The introduction of additives into a cupola furnace is generally known. Two goals are pursued, namely the reduction of the consumption of metallurgical bags and the control of the operation of a cupola furnace.
Bei den bekannten technischen Hilfsmitteln zur Injektion von Zusatzstoffen in einen metallurgischen Prozessablauf stellt man fest, dass infolge einer Doppelwirkung des Druckabfalls und des Anstiegs der Temperatur an der Austrittstelle des Injektors, die zur Einbringung vorgese henen Zusatzstoffe nur in einem ungenügenden Ausmass in den Verbrennungsraum des Kupolofens eingebracht werden können.With the known technical aids for injecting additives into a metallurgical process sequence, it is found that, due to a double action of the pressure drop and the rise in temperature at the outlet point of the injector, this is intended for introduction additives can only be introduced into the combustion chamber of the cupola furnace to an insufficient extent.
Aus der DE-OS 31 09 111 ist eine Anlage zum Eingeben von Kohle in metallurgische Prozessgefässe mit einer Vielzahl von Einblasstellen und einer entsprechenden Anzahl von zu den Einblasstellen führenden Injektionsleitungen bekannt. Um die Unregelmässigkeiten beim Einbringen von feinkörnigem Brennstoff in einen beispielsweise Kupolofen zu vermeiden, sind bei dieser Anlage die Injektionsleitungen je mit umfangreichen Regel- und Steuereinrichtungen versehen. Zudem werden die feinkörnigen Brennstoffe in den Zuführrinnen mittels eines Fördermediums bis zum Eintritt in den Verbrennungsraum geleitet.From DE-OS 31 09 111 a system for entering coal in metallurgical process vessels with a plurality of injection points and a corresponding number of injection lines leading to the injection points is known. In order to avoid the irregularities when introducing fine-grained fuel into a cupola furnace, for example, the injection lines in this system are each provided with extensive regulating and control devices. In addition, the fine-grained fuels are fed into the feed troughs by means of a conveying medium until they enter the combustion chamber.
Aus der DE-PS 154585 ist ein Verfahren zum Einbringen von mindestens einem Zusatzstoff insbesondere eines Energieträgers in einen Hochofen bekannt. Dabei wird der Zusatzstoff in den Ve rbrennungsluftstrom geleitet und mit diesem in den Ofenschacht gebracht, wobei durch Erzeugen eines Unterdruckes unmittelbar an der Austrittsstelle des Zusatzstoffes in den Verbrennungs luf tst rom der Zusatzstoff von de r Verbrennungsluft in den Ofen gesaugt wird.From DE-PS 154585 a method for introducing at least one additive, in particular an energy source, into a blast furnace is known. The additive is fed into the combustion air flow and brought with it into the furnace shaft, the additive being sucked into the furnace by the combustion air by generating a negative pressure directly at the point of exit of the additive into the combustion air stream.
Dieser Vorschlag, der aus dem Jahr 1903 stammt, konnte in de r Folge nicht industriell verwertet werden.This proposal, which dates from 1903, could not subsequently be used industrially.
Das Einsaugen alle ine reicht nicht, denn:Soaking in all is not enough, because:
a) durch Aenderung des inneren Ofenwiderstandes der Unterdruck zusammenbrechen kanna) the vacuum can break down by changing the internal furnace resistance
b) durch bestimmte Regelvorgänge im Abgassystem ein Gegendruck aufgebaut werden kann, wodurch der Unterdruck im Saugrohr zusammenbricht. Dieser Zustand kann zu Verstopfungen im Kohlenstaubzuleitungstei l führen.b) a counter pressure can be built up by certain control processes in the exhaust system, whereby the negative pressure in the intake manifold breaks down. This condition can lead to blockages in the coal dust supply part.
Um die bekannten aufwendigen und hochempfindlichen Steuer- und Regelmechanismen zu vermeiden und dennoch eine kontinuierlich gleichmässige Zuführung von Energieträgern in einen metallurgischen Verbrennungsprozess zu gewährleisten, hat sich die Anmelderin die Aufgabe gestellt, die bekannten Einrichtungen zu vereinfachen bei gleichzeitiger Erhöhung des Wirkungsgrades.In order to avoid the known complex and highly sensitive control mechanisms and still to ensure a continuous, uniform supply of energy sources in a metallurgical combustion process, the applicant has set itself the task of simplifying the known devices while increasing the efficiency.
Diese Aufgabe wird erfindungsgemass durch ein Verfahren gelöst, bei dem der jeweilige Zusatzstoff in den Verbrennungsluftstrom geleitet und mit diesem in den Ofenschacht gebracht wird, wobei durch Erzeugung eines Unterdrucks unmittelbar an der Austrittstelle des Zustzstoffes in den Verbrennungsluftstrom, der Zusatzstoff von der Verbrsnnungsluft in den Ofenschacht gesaugt wird.This object is achieved according to the invention by a method in which the respective additive is passed into the combustion air flow and brought with it into the furnace shaft, the additive from the combustion air into the furnace shaft being generated directly at the outlet point of the additive into the combustion air flow is sucked.
Die zur Durchführung des Verfahrens vorgeschlagene Einrichtung ist gekennzeichnet durch eine Injektorcüsenanordnung, die in der Zuführleitung des Verbrennungsluftstroms vorgesehen ist und eine von der Verbrennungsluft umströmte Rohrleitung aufweist, ein Ende ist mit einem Verratsbehälter für den Zusatzstoff verbunden und das andere Ende ragt in einen Verengungsbereich des Querschnittes des Durchgangkanals in der Ofenwand hinein.The device proposed for carrying out the method is characterized by an injector nozzle arrangement which is provided in the feed line of the combustion air flow and has a pipeline around which the combustion air flows, one end is connected to a treasure container for the additive and the other end projects into a constriction area of the cross section of the through-channel in the furnace wall.
Weitere vortei lhafte Ausgestaltungen des erfindungsgemässen Verfahrens und d e r Vorrichtung gehen aus den abhängigen Ansprüchen hervor.Further advantageous refinements of the method according to the invention and the device emerge from the dependent claims.
Anhand der beiliegenden Figur wird ein bevorzugtes Ausführungsbeispiel näher erläutert. Die Figur zeigt eine Ofenwand 1 eines (nicht dargestellten) Schacht- oder Kupolofens, bei denen das Brenngut am oberen Ende des Schachtes aufgegeben wird. Das Brenngut durchläuft die von den Brenngasen beheizte Vorwärmzone und gelangt schliesslich in die darunterliegende Brennzone. In der Brennzone des Schachtes sind umfangsmassig eine Reihe von Zuführleitungen angeordnet, über welche die Brennzone mit Heissluft beschickt wird. Diese Heissluft, die gleichzeitig als Oxydationsmittel dient, tritt sehr schnell, d.h. im allgemeinen mit einer Geschwindigkeit zwischen 200 und 300 m/s in die Brennzone ein.A preferred exemplary embodiment is explained in more detail with reference to the attached figure. The figure shows a furnace wall 1 of a (not shown) shaft or cupola furnace, in which the fired material is fed in at the upper end of the shaft. The fuel passes through the preheating zone, which is heated by the fuel gases, and finally reaches the combustion zone below. A number of supply lines are arranged circumferentially in the combustion zone of the shaft, via which the combustion zone is supplied with hot air. This hot air, which also serves as an oxidizing agent, enters the combustion zone very quickly, ie generally at a speed between 200 and 300 m / s.
Ein Einsatz 2, vorzugsweise aus einem metallischen Material mit einem Durchgangskanal 2a ist in der Ofenwand 1 angeordnet. Eine Zuführleitung 3, die für die Zuführung von Heissluft bzw. Heisswind in die Brennzone bestimmt ist, mündet in einer Ausnehmung des Einsatzes 2. Eine Injektordüse 7 ist in dem Zuführkanal 3 angeordnet. Die Injektoidüse 7 wird über ein Zuführrohr 4 mit einem vorgesehenen Zusatzstoff beschickt. Es handelt sich dabei um ein offenes Fördersystem, das ohne Unterstützung eines Fördermittels arbeitet. Lediglich eine nicht dargestellte Dosiereinrichtung sorgt für die kontinuierliche Zuführung des Zusatzstoffes.An insert 2, preferably made of a metallic material with a through channel 2a, is arranged in the furnace wall 1. A supply line 3, which is intended for supplying hot air or hot wind to the combustion zone, opens into a recess in the insert 2. An injector nozzle 7 is arranged in the supply duct 3. The injector nozzle 7 is charged with a provided additive via a feed pipe 4. It is an open funding system that works without the support of a grant. Only a metering device, not shown, ensures the continuous supply of the additive.
Im Durchgangskanal 2a ist ein Einsatz 5 vorgesehen. Der Durchgangsquerschnitt des Einsatzes 5 erweitert sich von einem kleinsten Radius 6 bis zu den Oeffnungen 5a und 5b.An insert 5 is provided in the through channel 2a. The passage cross section of the insert 5 widens from a smallest radius 6 to the openings 5a and 5b.
Das in den Ofen reichende Ende der Injektordüse reicht in den Bereich des engsten Querschnittes des Durchgangskanals des Einsatzes 5. An der Querschnittverengung, die durch den Durchmesser 6 definiert ist, entsteht bei kontinuierlichen Strömungsverhältnissen ein konstanter Unterdruck. Dieser Unterdruck führt zu einer Saugwirkung, sodass der über die Injektordüse 7 zugeführte Zusatzstoff im Unterdruckbereich gleichsam aus der Düse gesaugt wird. Da im Bereich der Querschnittsverengung die Geschwindigkeit des die Injektordüse umströmenden Heisswindes erhöht wird, wird der Zusatzstoff mit der Geschwindigkeit des Heisswindes in die Brennzone des Ofenschachtes befördert.The end of the injector nozzle reaching into the furnace extends into the area of the narrowest cross section of the through-channel of the insert 5. At the cross-sectional constriction, which is defined by the diameter 6, a constant negative pressure is created under continuous flow conditions. This negative pressure leads to a suction effect, so the additive supplied via the injector nozzle 7 is, as it were, sucked out of the nozzle in the vacuum region. Since the speed of the hot wind flowing around the injector nozzle is increased in the area of the cross-sectional constriction, the additive is conveyed into the combustion zone of the furnace shaft at the speed of the hot wind.
Damit eventuell auftretende Aenderungen der Druckverhältnisse nicht zu Verstopfungen führen, muss die Anlage mit einem zusätzlichen Injektorsystem 8 unterstützt werden, um zu gewährleisten, dass eine eingestellte Zusatzstoffmenge, z.B. Kohlenstoff-(C), immer die Brennzone im Ofen erreicht. Das Injektorsystem 8 arbeitet pressluftunterstützt, wobei die Pressluft vorgewärmt werden kann.So that any changes in the pressure conditions do not lead to blockages, the system must be supported with an additional injector system 8 in order to ensure that a set amount of additive, e.g. Carbon (C), always reached the firing zone in the furnace. The injector system 8 works with compressed air support, whereby the compressed air can be preheated.
Das beschriebene saugende System kann ohne Probleme kontinuierlich betrieben und regeltechnisch auch mit unterschiedlichen Konsistenzen, wie Feinstäube und Granulate beschickt werden.The suction system described can be operated continuously without problems and can also be loaded with different consistencies, such as fine dust and granules.
Beim beschriebenen Verfahren können als Zusatzstoffe Kohlenstaub, Granulate bis zu einer Korngrösse von 10 mm verwendet werden. Das Verfahren erlaubt es auch Problemstoffe, die unter bestimmten Temperaturen verbrannt werden müssen, um nicht durch unerwünschte Emission die Umwelt zu belasten, zu verwenden.In the process described, coal dust, granules up to a grain size of 10 mm can be used as additives. The process also allows problematic substances that have to be burned at certain temperatures so as not to pollute the environment with undesired emissions.
Die Verwendung des erfindungsgemässen Verfahrens und der Vorrichtung kann zu einer Reduktion des herkömmlichen Brennstoffantei ls, z.B. Koks, von 30 % und mehr führen.The use of the method and the device according to the invention can lead to a reduction in the conventional fuel content, e.g. Coke, lead from 30% and more.
Das beschriebene System ist auch für die Entsorgung von Schadstoffen geeignet. Bei der Entsorgung von Schadstoffen ist gedacht (und teilweise auch bereits erfolgreich erprobt) an:The system described is also suitable for the disposal of pollutants. When disposing of pollutants, we have thought of (and in some cases have already been successfully tested):
Caleium-Karbid-SchlackeCaleium carbide slag
Giesserei-Altsande und KernabfälleOld foundry sands and core waste
Filterstäube, aus Kupolöfen, Abschlagstellen und weiterenFilter dust, from cupola furnaces, tapping points and others
AnfalIstellenMake a call
Sehleifstäube, ölhaltige Späne und andere eigene, d.h. in der Giesserei anfallendeLipid dust, oily shavings and other own, i.e. occurring in the foundry
Deponie- und Problemstoffe wie aber auch Schadstoffe Fremder (Flugasche, Altöle) oder eine Kombination aus beiden, eigener und fremderLandfill and problematic substances as well as foreign substances (fly ash, waste oils) or a combination of both, own and foreign
Schadstoffe, z.B. voll-saugfähige Brennstoffe, wie Petrolkoks oder Graphit mit flüssigen Abfällen getränkt (z.B. Kondensator-Oel), oder Abfallstäube und pheno lha Iti ge oder kohlenwasserstoff-haItige Problemstoffe vermischt mitPollutants, e.g. Fully absorbent fuels, such as petroleum coke or graphite soaked with liquid waste (e.g. condenser oil), or waste dust and phenolic or hydrocarbon-containing problematic substances mixed with
Flugasche oder ölhaltigen Deponiestoffen. Fly ash or oily landfill materials.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Verfahren zum Einbringen von mindestens einem Zusatzstoff, insbesondere eines Energieträgers, in einen Schacht- bzw. Kupolofen, bei dem Verbrennungsluft über Düsen in den Ofenschacht geblasen wird, dadurch gekennzeichnet, dass der Zusatzstoff in den Verbrennungsluftstrom geleitet und mit diesem in den Ofenschacht gebracht wird, wobei durch Erzeugung eines Unterdruckes unmittelbar an der Austrittsstelle des Zusatzstoffes in den Verbrennungsluftstrom, d e r Zusatzstoff von der Verbrennungsluft in den Ofenschacht gesaugt wird.1. A method for introducing at least one additive, in particular an energy source, into a shaft or cupola furnace, in which combustion air is blown into the furnace shaft via nozzles, characterized in that the additive is passed into the combustion air flow and brought into the furnace shaft with it is, by generating a vacuum directly at the point of exit of the additive in the combustion air flow, the additive is sucked into the furnace shaft by the combustion air.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Unterdruck durch eine Querschnittsverengung im Durchgangskanal in der Ofenwand erzeugt wird.2. The method according to claim 1, characterized in that the negative pressure is generated by a cross-sectional constriction in the through-channel in the furnace wall.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass zum Einbringen des Zusatzstoffes mit dem Verbrennungsluftstrom in den Ofenschacht eine Injektordüsenanordnung verwendet wird. 3. The method according to claim 1, characterized in that an injector nozzle arrangement is used to introduce the additive with the combustion air flow into the furnace shaft.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass de r Zusatzstoff ein Brennstoff ist, insbesondere Kohlenstaub, Granulate mit einer Korngrösse bis 10 mm.4. The method according to any one of claims 1 to 3, characterized in that the additive is a fuel, in particular coal dust, granules with a grain size of up to 10 mm.
5. Einrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4, gekennzeichnet durch eine Injektordüsenanordnung, die in der Zufuhrleitung für den Verbrennungs luf tst rom vorgesehen ist und eine von der5. Device for performing the method according to one of claims 1 to 4, characterized by an injector nozzle arrangement, which is provided in the supply line for the combustion air tst rom and one of the
Verbrennungsluft umströmte Rohrleitung aufweist, deren eines Ende mit einem Vorratsbehälter für den Zusatzstoff verbunden ist, und deren anderes Ende (Austritts ende) in den Verengungsbereich des Querschnittes des Durchgangskanals in der Ofenwand hineinragt.Combustion air flows around pipeline, one end of which is connected to a reservoir for the additive, and the other end (outlet end) of which projects into the narrowing region of the cross section of the through-channel in the furnace wall.
6. Einrichtung zum Einbringen von mindestens einem Zusatzstoff, insbesondere eines Energieträger, in einen Schacht- bzw. Kupolofen, bei dem Verbrennungsluft über Düsen in den Ofenschacht gelangt, wobei in der Wand des Ofenschachtes mindestens eine Zufuhrleitung für den Verbrennungs luftstrom vorgesehen ist, dadurch gekennzeichnet, dass in der Zufuhrleitung ein querschnittverengender Einsatz angeordnet ist, in die eine Injektordüsenanordnung mündet, mittels welcher der Zusatzstoff in den Verbrennungs luftstrom einbringbar ist und die eine von der Verbrennungsluft umströmte Rohrleitung aufweist, deren ein Ende mit einem VorratsbehäIter für den Zusatzstoff verbunden ist und deren anderes Ende in den Verengungsbereich des Einsatzes hineinragt, und dass die Injektordüsenanordnung mit mindestens einer weiteren Düsenanordnung verbunden ist.6. Device for introducing at least one additive, in particular an energy source, into a shaft or cupola furnace, in which combustion air passes through nozzles into the furnace shaft, at least one supply line for the combustion air flow being provided in the wall of the furnace shaft, characterized in that that a cross-section-reducing insert is arranged in the feed line, into which an injector nozzle arrangement opens, by means of which the additive can be introduced into the combustion air flow and which has a pipeline around which the combustion air flows, the one end of which is connected to a reservoir for the additive and the latter the other end protrudes into the constriction area of the insert, and that the injector nozzle arrangement is connected to at least one further nozzle arrangement.
7. Einrichtung nach Anspruchspruch 6, dadurch gekennzeichnet, dass mehrere Düsenanordnungen in Serie angeordnet sind. 7. Device according to claim 6, characterized in that a plurality of nozzle arrangements are arranged in series.
8. Einrichtung nach Anspruch 6, dadurch gekennzeichnet, dass mindestens eine Düsenanordnung mit Fremdwind arbeitet.8. Device according to claim 6, characterized in that at least one nozzle arrangement works with external wind.
9. Einrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass mindestens eine pressluftunterstützte Düsenanordnung vorgesehen ist.9. Device according to one of claims 6 to 8, characterized in that at least one compressed air-assisted nozzle arrangement is provided.
10. Einrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Pressluft vorgewärmt ist.10. Device according to claim 9, characterized in that the compressed air is preheated.
11. Verwendung des Verfahrens und der Einrichtung nach einem der Ansprüche 1 bis 10 für die Entsorgung von Problernstoffen. 11. Use of the method and the device according to one of claims 1 to 10 for the disposal of problem substances.
EP88900009A 1986-12-24 1987-12-23 Process and device for introducing additives into a cupola or shaft furnace Expired - Lifetime EP0296188B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88900009T ATE62339T1 (en) 1986-12-24 1987-12-23 METHOD AND DEVICE FOR INTRODUCING ADDITIVES INTO A SHAFT OR CUPOLA.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5186/86A CH674567A5 (en) 1986-12-24 1986-12-24
CH5186/86 1986-12-24

Publications (2)

Publication Number Publication Date
EP0296188A1 true EP0296188A1 (en) 1988-12-28
EP0296188B1 EP0296188B1 (en) 1991-04-03

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EP88900009A Expired - Lifetime EP0296188B1 (en) 1986-12-24 1987-12-23 Process and device for introducing additives into a cupola or shaft furnace

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US (1) US5070797A (en)
EP (1) EP0296188B1 (en)
JP (1) JP2710374B2 (en)
KR (1) KR930000092B1 (en)
CN (1) CN1017083B (en)
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CH674567A5 (en) 1990-06-15
CN1017083B (en) 1992-06-17
AU606642B2 (en) 1991-02-14
PL269691A1 (en) 1988-09-01
US5070797A (en) 1991-12-10
JP2710374B2 (en) 1998-02-10
JPH01501636A (en) 1989-06-08
AU8339287A (en) 1988-07-27
SK979187A3 (en) 1998-09-09
DE3769142D1 (en) 1991-05-08
CN87108358A (en) 1988-07-06
CZ979187A3 (en) 1999-06-16
NO875372D0 (en) 1987-12-21
EP0296188B1 (en) 1991-04-03
CA1337958C (en) 1996-01-23
PL157931B1 (en) 1992-07-31
WO1988005149A1 (en) 1988-07-14
AU8290987A (en) 1988-06-23
KR890700215A (en) 1989-03-10
NO875372L (en) 1988-06-24
SK280698B6 (en) 2000-06-12
KR930000092B1 (en) 1993-01-08
ATE62339T1 (en) 1991-04-15
HU209806B (en) 1994-11-28
DD279721A5 (en) 1990-06-13

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