EP0044096A1 - Process and apparatus for the injection of solid fuel into the hot blast pipe of a shaft furnace - Google Patents
Process and apparatus for the injection of solid fuel into the hot blast pipe of a shaft furnace Download PDFInfo
- Publication number
- EP0044096A1 EP0044096A1 EP81200656A EP81200656A EP0044096A1 EP 0044096 A1 EP0044096 A1 EP 0044096A1 EP 81200656 A EP81200656 A EP 81200656A EP 81200656 A EP81200656 A EP 81200656A EP 0044096 A1 EP0044096 A1 EP 0044096A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- partial
- pneumatic
- hot wind
- wind
- 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.)
- Withdrawn
Links
- 239000004449 solid propellant Substances 0.000 title claims abstract description 11
- 238000002347 injection Methods 0.000 title claims description 11
- 239000007924 injection Substances 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 11
- 239000000446 fuel Substances 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 abstract description 6
- 239000003245 coal Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000003077 lignite Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- 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 of injecting solid fuels into a hot wind pipe of a shaft furnace, as well as a device for carrying out this method.
- European patent application 80103206 which describes a first operational installation for dosing and transporting solid fuels, has made it possible to resolve one of the essential problems posed by this substitution. Another problem, the solution of which is the subject of the present invention, is that of injecting solid fuels into the hot wind introduced through the nozzles into the blast furnace.
- each fuel particle finds the necessary quantity oxygen for its combustion, that is to say an effective mixture is needed between the hot wind and the powdered carbon which is infected there. Not only must this mixture occur as ideally as possible, but it must also occur quickly so that combustion occurs during injection through the nozzle.
- Another condition is that this mixing takes place without the fuel particles coming into contact with the refractory lining. In effect it would then be quickly destroyed by the excessive temperatures produced by combustion.
- the pressure of the coal propulsion fluid must first be higher than the pressure hot wind to carry out this injection.
- the coal powder injected in this way inside the pipe would propagate with the current of hot wind in the form of a well concentrated flow having approximately the same section as before in the pneumatic pipe. In other words, there would be no dispersion of the coal powder in the hot wind and this more or less concentrated flux of the coal would be injected as it is into the oven. Consequently, only the outer part of this coal stream would be in contact with the oxygen of the hot wind and would undergo the necessary combustion, while the coal in the central region of the stream would not be burned.
- the object of the present invention is to provide a new method of injecting solid fuels allowing better dispersion of the fuel in the hot wind.
- the invention also relates to a device for implementing this method.
- the method according to the invention is characterized in that, before injecting the pneumatic stream loaded with fuel into the pipe, it is divided into at least two partial streams which are injected at different places, but in the same transverse plane of the pipe, so that these partial currents meet inside the pipe and disintegrate mutually.
- the simplest way is to inject two partial streams at diametrically opposite places in the pipe.
- the injection is preferably carried out at the nozzle of a blower holder.
- the installation for the implementation of this process comprises a pneumatic pipe for supplying fuel in pulverulent state to the wind pipe and is characterized in that, when approaching the wind pipe, the pneumatic line is divided into at least two partial pneumatic lines which penetrate, at different places, but in the same transverse plane of the wind line, into it and that, inside this hot wind line, the ends of these partial pipes are directed at a common point.
- the simplest embodiment comprises two partial pipes which are brought through diametrically opposite points inside the pipe.
- the partial pipes preferably penetrate at the level of the nozzles in the hot wind pipe.
- the ends of the partial pipes are cut at a bevel parallel to the longitudinal axis of the hot wind pipe.
- Reference 2 in this figure schematically represents part of the wall of a blast furnace.
- the hot wind is injected through a wind carrier whose lower end, generally designated by the nozzle, is represented by the reference 4.
- This nozzle 4 is applied against an injection nozzle 6, generally made of copper, which is anchored in the tapered end of a water-cooled tympe 8.
- a pneumatic line is represented by the reference 10.
- This pneumatic line brings a solid fuel, such as coal or lignite powder by means of a propulsion fluid.
- This pneumatic current can be made in accordance with the aforementioned European patent application.
- this pipe is divided into two partial branches 10a and 10b which pass through the refractory wall of the nozzle 4 at diametrically opposite locations and the internal ends 12a and 12b are directed towards each other, or rather on a common point of intersection on the longitudinal axis of the nozzle 4.
- the ends 12a and 12b are cut at a bevel parallel to the axis of the nozzle.
- the ends 12a and 12b are slightly divergent in order to reduce the speed of penetration of the pneumatic current and to already generate a certain divergence in the flow before leaving the ends 12a and 12b of the conduits 10a and 10b.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
Description
La présente invention concerne un procédé d'injection de combustibles solides dans une conduite de vent chaud d'un four à cuve, ainsi qu'un dispositif pour la mise en oeuvre de ce procédé.The present invention relates to a method of injecting solid fuels into a hot wind pipe of a shaft furnace, as well as a device for carrying out this method.
En vue de leentretien du processus de réduction dans les hauts fourneaux, on y injecte du vent chaud, généralement enrichi au moyen d'un combustible que l'on introduit dans ce vent chaud au niveau des tuyères. Jusqu'à présent, on a utilisé presque exclusivement des combustibles liquides et plus particulièrement des produits pétroliers. En effet, ces combustibles liquides ont l'avantage d'être très facilement manipulables et les moyens mis en oeuvre pour leur injection dans les tuyères sont simples, tout en permettant une pulvérisation efficace de ces combustibles et un bon mélange avec le vent chaud.In view of e maintenance of the reduction process in the furnace blast, is injected into the hot wind, usually enriched by a fuel which is introduced in this hot wind at the nozzles. Hitherto, almost exclusively liquid fuels and more particularly petroleum products have been used. Indeed, these liquid fuels have the advantage of being very easy to handle and the means used for their injection into the nozzles are simple, while allowing efficient spraying of these fuels and good mixing with the hot wind.
Toutefois, l'évolution galopante du prix des produits pétroliers, ainsi que l'épuisement.progressif des réserves, ont ouvert la course au remplacement de ces produits par d'autres combustibles, notamment du charbon ou de la lignite. Malheureusement, les installations connues pour l'injection de combustibles liquides ne sont pas utilisables pour l'injection de combustibles solides, tels que de la lignite et de la poudre de charbon. Cette substitution soulève par conséquent de nouveaux problèmes.However, the rapid development of the price of petroleum products, as well as the gradual depletion of reserves, opened the race to the replacement of these products by other fuels, in particular coal or lignite. Unfortunately, the known installations for the injection of liquid fuels cannot be used for the injection of solid fuels, such as lignite and coal powder. This substitution therefore raises new problems.
La demande de brevet européen 80103206, qui décrit une première installation opérative pour le dosage et le transport de combustibles solides, a permis de résoudre l'un des problèmes essentiels posés par cette substitution. Un autre problème, dont la solution fait l'objet de la présente invention, est celui de l'injection des combustibles solides dans le vent chaud introduit à travers les tuyères dans le haut fourneau.European patent application 80103206, which describes a first operational installation for dosing and transporting solid fuels, has made it possible to resolve one of the essential problems posed by this substitution. Another problem, the solution of which is the subject of the present invention, is that of injecting solid fuels into the hot wind introduced through the nozzles into the blast furnace.
En effet, une des conditions pour réaliser une combustion complète aussi bien de la poudre de charbon ou de lignite que de l'oxygène amené par le vent chaud, est que chaque particule de combustible trouve la quantité nécessaire d'oxygène pour sa combustion, c'est-à-dire qu'il faut un mélange efficace entre le vent chaud et la poudre de charbon qu'on y infecte. Non seulement ce mélange doit se produire de la façon la plus idéale possible, mais encore doit-il se produire rapidement afin que la combustion se produise lors de l'injection à travers la tuyère. Une autre condition est que ce mélange se réalise sans que les particules de combustible entrent en contact avec le revêtement réfractaire. En effets celui-ci serait alors rapidement détruit par les températures excessives produits par la combustion.Indeed, one of the conditions for achieving a complete combustion of both the coal or lignite powder and the oxygen brought by the hot wind, is that each fuel particle finds the necessary quantity oxygen for its combustion, that is to say an effective mixture is needed between the hot wind and the powdered carbon which is infected there. Not only must this mixture occur as ideally as possible, but it must also occur quickly so that combustion occurs during injection through the nozzle. Another condition is that this mixing takes place without the fuel particles coming into contact with the refractory lining. In effect it would then be quickly destroyed by the excessive temperatures produced by combustion.
Ce problême n'existe pas lorsqu'on injecte des combustibles liquides. En effet, il suffit d'amener le combustible liquide à travers un tuyau à l'intérieur du busillon, ou même de la tuyère, où par suite de la vitesse élevée du vent-chaud, il se produit une pulvérisation immédiate et complète du combustible liquide dans le vent chaud.This problem does not exist when injecting liquid fuels. Indeed, it suffices to bring the liquid fuel through a pipe inside the nozzle, or even of the nozzle, where as a result of the high speed of the hot-wind, there occurs an immediate and complete atomization of the fuel liquid in hot wind.
Par contre, si par analogie, on amène la poudre de charbon à travers une conduite pneumatique jusqu'à l'intérieur de la conduite de vent chaud, il faut d'abord que la pression du fluide de propulsion du charbon soit supérieure à la pression du vent chaud pour réaliser cette injection. Cette condition étant remplie, la poudre de charbon injectée de cette manière à l'intérieur de la conduite se propagerait avec le courant de vent chaud sous forme d'un flux bien concentré ayant approximativement la même section qu'auparavant dans la conduite pneumatique. Autrement dit, il n'y aurait pas de dispersion de la poudre de charbon dans le vent chaud et ce flux plus ou moins concentré du charbon serait injecté tel quel dans le four. Par conséquent, seule la partie extérieure de ce flux de charbon serait en contact avec l'oxygène du vent chaud et subirait la combustion nécessaire, alors que le charbon dans la région centrale du flux ne serait pas brûlé.On the other hand, if by analogy, the coal powder is brought through a pneumatic line to the interior of the hot wind line, the pressure of the coal propulsion fluid must first be higher than the pressure hot wind to carry out this injection. This condition being fulfilled, the coal powder injected in this way inside the pipe would propagate with the current of hot wind in the form of a well concentrated flow having approximately the same section as before in the pneumatic pipe. In other words, there would be no dispersion of the coal powder in the hot wind and this more or less concentrated flux of the coal would be injected as it is into the oven. Consequently, only the outer part of this coal stream would be in contact with the oxygen of the hot wind and would undergo the necessary combustion, while the coal in the central region of the stream would not be burned.
Le but de la présente invention est de prévoir un nouveau procédé d'injection de combustibles solides permettant une meilleure dispersion du combustible dans le vent chaud. L'invention vise également un dispositif pour la mise en oeuvre de ce procédé.The object of the present invention is to provide a new method of injecting solid fuels allowing better dispersion of the fuel in the hot wind. The invention also relates to a device for implementing this method.
Pour atteindre cet objectif, le procédé selon l'invention est caractérisé en ce que, avant d'injecter le courant pneumatique chargé de combustible dans la conduite, on le divise en au moins deux courants partiels qu'on injecte à das endroits différents, mais dans un même plan transversal de la conduite, de façon que ces courants partiels se rencontrent à L'intérieur de la conduite et se désintègrent mutuellement.To achieve this objective, the method according to the invention is characterized in that, before injecting the pneumatic stream loaded with fuel into the pipe, it is divided into at least two partial streams which are injected at different places, but in the same transverse plane of the pipe, so that these partial currents meet inside the pipe and disintegrate mutually.
La façon la plus simple consiste à injecter deux courants partiels à des endroits diamétralement opposés de la conduite.The simplest way is to inject two partial streams at diametrically opposite places in the pipe.
L'injection est, de préférence, effectuée au niveau du busillon d'un porte-vent.The injection is preferably carried out at the nozzle of a blower holder.
L'installation pour la mise en oeuvre de ce procédé comporte une conduite pneumatique d'amenée de combustible à l'état pulvérulent jusqu'à la conduite de vent et est caractérisée en ce que, à l'approche de la conduite de vent, la conduite pneumatique est divisée en au moins deux conduites pneumatiques partielles qui pénètrent, à des endroits différents, mais dans le même plan transversal de la conduite de vent, dans celle-ci et que, à l'intérieur de cette conduite de vent chaud, les extrémités de ces conduites partielles sont dirigées sur un point commun.The installation for the implementation of this process comprises a pneumatic pipe for supplying fuel in pulverulent state to the wind pipe and is characterized in that, when approaching the wind pipe, the pneumatic line is divided into at least two partial pneumatic lines which penetrate, at different places, but in the same transverse plane of the wind line, into it and that, inside this hot wind line, the ends of these partial pipes are directed at a common point.
Le mode de réalisation le plus simple comporte deux conduites partielles qui sont amenées à travers des points diamétralement opposés à l'intérieur de la conduite. Les conduites partielles pénètrent, de préférence, au niveau des busillons, dans la conduite de vent chaud.The simplest embodiment comprises two partial pipes which are brought through diametrically opposite points inside the pipe. The partial pipes preferably penetrate at the level of the nozzles in the hot wind pipe.
Selon une autre caractéristique de l'invention, les extrémités des conduites partielles sont coupées en biseau parallèlement à l'axe longitudinal de la conduite de vent chaud.According to another characteristic of the invention, the ends of the partial pipes are cut at a bevel parallel to the longitudinal axis of the hot wind pipe.
Au lieu de faire pénétrer deux conduites pneumatiques partielles dans le busillon, il est également possible de prévoir trois conduites partielles, ou même plus. Ces conduites partielles sont espacées régulièrement, par exemple, dans le cas de trois conduites pneumatiques partielles, d'un angle de 120°. La condition essentielle à laquelle doit satisfaire la disposition de ces conduites pneumatiques partielles est toujours que les flux pneumatiques issus de chacune de celles-ci se rencontrent en un point commun et se désintègrent mutuellement et provoquent, de cette manière, une dispersion totale de la poudre de charbon dans le courant de vent chaud. De cette manière, les particules de combustible sont mélangées au vent chaud immédiatement en aval de l'extrémité des conduites pneumatiques et la combustion est initiée sur la fin du passage à travers le busillon et à travers la tuyère.Instead of making two partial pneumatic lines penetrate the nozzle, it is also possible to provide three or more partial lines. These partial pipes are regularly spaced, for example, in the case of three partial pneumatic pipes, at an angle of 120 °. The essential condition which the provision of these pneumatic lines must satisfy partial is always that the pneumatic flows from each of these meet at a common point and disintegrate mutually and cause, in this way, a total dispersion of the coal powder in the current of hot wind. In this way, the fuel particles are mixed with the hot wind immediately downstream from the end of the pneumatic lines and combustion is initiated at the end of the passage through the nozzle and through the nozzle.
D'autres particularités et caractéristiques ressortiront de la description détaillée d'un mode de réalisation présenté ci-dessous, à titre d'illustration, en référence à la figure unique qui montre une coupe schématique verticale à travers l'extrémité inférieure d'un porte-vent pour l'injection de vent chaud dans un haut fourneau et pourvu d'un système de dispersion de combustibles solides selon l'invention.Other particularities and characteristics will emerge from the detailed description of an embodiment presented below, by way of illustration, with reference to the single figure which shows a vertical schematic section through the lower end of a door. -wind for the injection of hot wind into a blast furnace and provided with a solid fuel dispersion system according to the invention.
La référence 2 sur cette figure représente schématiquement une partie de la paroi d'un haut fourneau. Le vent chaud est injecté à travers un porte-vent dont l'extrémité inférieure, généralement désignée par le busillon, est représenté par la référence 4. Ce busillon 4 est appliqué contre une tuyère d'injection 6, généralement en cuivre, qui est ancré dans l'extrémité cônique d'une tympe 8 refroidie à l'eau.Reference 2 in this figure schematically represents part of the wall of a blast furnace. The hot wind is injected through a wind carrier whose lower end, generally designated by the nozzle, is represented by the reference 4. This nozzle 4 is applied against an injection nozzle 6, generally made of copper, which is anchored in the tapered end of a water-cooled
Une conduite pneumatique est représentée par la référence 10. Cette conduite pneumatique amène un combustible solide, tel que de la poudre de charbon ou de lignite au moyen d'un fluide de propulsion. Ce courant pneumatique peut être confectionné conformément à la demande de brevet européen précitée. A l'approche du busillon 4, cette conduite se divise en deux branches partielles 10a et 10b qui traversent la paroi réfractaire du busillon 4 à des endroits diamétralement opposés et les extrémités intérieures 12a et 12b sont dirigées l'une vers l'autre, ou plutôt sur un point d'intersection commun sur l'axe longitudinal du busillon 4. Les extrémités 12a et 12b sont coupées en biseau parallèlement à l'axe du busillon. D'autre part, il est possible que les extrémités 12a et 12b soient légèrement divergentes afin de réduire la vitesse de pénétration du courant pneumatique et d'engendrer déjà une certaine divergence du flux avant de quitter les extrémités 12a et 12b des conduites 10a et lOb.A pneumatic line is represented by the
Le fait que les deux courant partiels se rencontrent en un point commun et se désintègrent mutuellement provoque une dispersion des courants de combustible, aussi bien vers l'avant des extrémités 12a et 12b que latéralement, de sorte qu'il se produit un mélange efficace avec les vents chauds et que la majorité des particules viendront au contact de l'oxygène du vent chaud.The fact that the two partial streams meet at a common point and disintegrate mutually causes a dispersion of the fuel streams, both forwards of the
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU82622 | 1980-07-14 | ||
| LU82622A LU82622A1 (en) | 1980-07-14 | 1980-07-14 | METHOD AND DEVICE FOR INJECTING SOLID FUELS INTO A HOT WIND DUCT FROM A TANK OVEN |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0044096A1 true EP0044096A1 (en) | 1982-01-20 |
Family
ID=19729445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81200656A Withdrawn EP0044096A1 (en) | 1980-07-14 | 1981-06-12 | Process and apparatus for the injection of solid fuel into the hot blast pipe of a shaft furnace |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0044096A1 (en) |
| LU (1) | LU82622A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119488A (en) * | 1982-03-31 | 1983-11-16 | Kobe Steel Ltd | Injecting pulverised fuel into a blast furnace |
| WO1991014791A1 (en) * | 1990-03-20 | 1991-10-03 | Küttner Gmbh & Co. Kg | Process and device for injecting coal dust and oxygen into a blast furnace |
| WO1992013107A1 (en) * | 1991-01-17 | 1992-08-06 | SSAB Tunnplåt AB | Blast pipe and tuyere arrangement |
| US5227117A (en) * | 1992-05-29 | 1993-07-13 | Usx Corporation | Apparatus for blast furnace fuel injection |
| EP1020696A3 (en) * | 1998-12-14 | 2003-01-02 | EKO Stahl GmbH | Process and device to inject solid particles in a shaft furnace |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1453780A (en) * | 1922-02-24 | 1923-05-01 | Jr Delaney Arkwright | Burner |
| US1454664A (en) * | 1920-04-30 | 1923-05-08 | Baldwin Locomotive Works | Powdered-fuel burner |
| DE449301C (en) * | 1924-09-13 | 1927-09-12 | Barbara Gaertner Geb Braetsch | Fuel dust burner with fuel dust supplied by air or mechanical means |
| US1657725A (en) * | 1923-09-06 | 1928-01-31 | Charles Gilbert Hawley | Fuel burner |
| DE472411C (en) * | 1925-03-31 | 1929-02-28 | Babcock & Wilcox Dampfkessel W | Burners for dusty and gaseous fuels |
| FR655779A (en) * | 1927-02-14 | 1929-04-23 | Buttner Werke Ag | Pulverized Coal Heated Fireplace Burner |
| GB524176A (en) * | 1939-01-24 | 1940-07-31 | Henry Pittaway | Improvements in or relating to the combustion of pulverized fuel |
| FR1558425A (en) * | 1967-12-13 | 1969-02-28 | ||
| DE1526195A1 (en) * | 1965-09-18 | 1970-01-08 | Steinmueller Gmbh L & C | Combined burner for coal dust and oil |
-
1980
- 1980-07-14 LU LU82622A patent/LU82622A1/en unknown
-
1981
- 1981-06-12 EP EP81200656A patent/EP0044096A1/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1454664A (en) * | 1920-04-30 | 1923-05-08 | Baldwin Locomotive Works | Powdered-fuel burner |
| US1453780A (en) * | 1922-02-24 | 1923-05-01 | Jr Delaney Arkwright | Burner |
| US1657725A (en) * | 1923-09-06 | 1928-01-31 | Charles Gilbert Hawley | Fuel burner |
| DE449301C (en) * | 1924-09-13 | 1927-09-12 | Barbara Gaertner Geb Braetsch | Fuel dust burner with fuel dust supplied by air or mechanical means |
| DE472411C (en) * | 1925-03-31 | 1929-02-28 | Babcock & Wilcox Dampfkessel W | Burners for dusty and gaseous fuels |
| FR655779A (en) * | 1927-02-14 | 1929-04-23 | Buttner Werke Ag | Pulverized Coal Heated Fireplace Burner |
| GB524176A (en) * | 1939-01-24 | 1940-07-31 | Henry Pittaway | Improvements in or relating to the combustion of pulverized fuel |
| DE1526195A1 (en) * | 1965-09-18 | 1970-01-08 | Steinmueller Gmbh L & C | Combined burner for coal dust and oil |
| FR1558425A (en) * | 1967-12-13 | 1969-02-28 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119488A (en) * | 1982-03-31 | 1983-11-16 | Kobe Steel Ltd | Injecting pulverised fuel into a blast furnace |
| FR2530666A1 (en) * | 1982-03-31 | 1984-01-27 | Kobe Steel Ltd | METHOD AND APPARATUS FOR INJECTING SOLID FUEL AND BURNER FOR HIGH-STOVE |
| US4490171A (en) * | 1982-03-31 | 1984-12-25 | Kobe Steel, Limited | Method and apparatus for injecting pulverized fuel into a blast furnace |
| WO1991014791A1 (en) * | 1990-03-20 | 1991-10-03 | Küttner Gmbh & Co. Kg | Process and device for injecting coal dust and oxygen into a blast furnace |
| WO1992013107A1 (en) * | 1991-01-17 | 1992-08-06 | SSAB Tunnplåt AB | Blast pipe and tuyere arrangement |
| US5333840A (en) * | 1991-01-17 | 1994-08-02 | SSAB Tunnplåt AB | Blast pipe and tuyere arrangement for a blast furnace and method |
| AU652805B2 (en) * | 1991-01-17 | 1994-09-08 | Ssab Tunnplat Ab | Blast pipe and tuyere arrangement |
| US5227117A (en) * | 1992-05-29 | 1993-07-13 | Usx Corporation | Apparatus for blast furnace fuel injection |
| EP1020696A3 (en) * | 1998-12-14 | 2003-01-02 | EKO Stahl GmbH | Process and device to inject solid particles in a shaft furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| LU82622A1 (en) | 1982-02-17 |
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Inventor name: MAILLIET, PIERRE Inventor name: ULVELING, LEON Inventor name: THILLEN, GUY Inventor name: SCHMIT, CHARLES |