NL2003754C2 - Method for improving the combustion efficiency of a burner of a hot blast stove, and such a hot blast stove comprising a gas burner. - Google Patents

Method for improving the combustion efficiency of a burner of a hot blast stove, and such a hot blast stove comprising a gas burner. Download PDF

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Publication number
NL2003754C2
NL2003754C2 NL2003754A NL2003754A NL2003754C2 NL 2003754 C2 NL2003754 C2 NL 2003754C2 NL 2003754 A NL2003754 A NL 2003754A NL 2003754 A NL2003754 A NL 2003754A NL 2003754 C2 NL2003754 C2 NL 2003754C2
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NL
Netherlands
Prior art keywords
burner
air
gas
duct
crown
Prior art date
Application number
NL2003754A
Other languages
Dutch (nl)
Inventor
Jan Soonius
Jacobus Laar
Original Assignee
Heatteq Refractory Holding B V
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 Heatteq Refractory Holding B V filed Critical Heatteq Refractory Holding B V
Priority to NL2003754A priority Critical patent/NL2003754C2/en
Priority to PCT/NL2010/050732 priority patent/WO2011056069A2/en
Application granted granted Critical
Publication of NL2003754C2 publication Critical patent/NL2003754C2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C21B9/10—Other details, e.g. blast mains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D91/00—Burners specially adapted for specific applications, not otherwise provided for
    • F23D91/02—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21001—Burners specially adapted for a particular use for use in blast furnaces

Abstract

Hot blast stove comprising a gas burner, said burner having a burner crown at which gas and air ducts have discharge openings, provided with a central gas duct and side air ducts for primary combustion air, which side air ducts have their discharge openings at opposite sides of the discharge opening of said gas duct, and provided with at least one auxiliary air duct that has one or more outlets for secondary combustion air, wherein the at least one auxiliary air duct is provided above the burner crown.

Description

Method for improving the combustion efficiency of a burner of a hot blast stove, and such a hot blast stove comprising a gas burner
The invention relates to a hot blast stove comprising a gas burner, said burner having a burner crown at which gas and air ducts have discharge openings, and which burner is provided with a gas duct and air ducts for primary combustion air, which 5 air ducts have their discharge openings at opposite sides of the discharge opening of said gas duct, and is provided with at least one auxiliary air duct that has one or more outlets for secondary combustion air.
European patent specification EP-B-0 561 449 discloses 10 a ceramic gas burner for a hot blast stove of a blast furnace, said burner having a burner crown at which gas and air ducts have discharge openings, and which burner is provided with a central gas duct and side air ducts for primary combustion air, which side air ducts have their discharge openings at opposite 15 sides of the discharge opening of said gas duct, and is provided with a central air duct which extends within the gas duct and has a discharge opening or openings within said gas duct. This central air duct serves the purpose of providing secondary combustion air, therewith intending to improve the combustion char-20 acteristics of the burner, in particular to further the degree of completeness of combustion.
A clear disadvantage of the design according to EP-B-0 561 449 is that it is not suited to retrofit according to this design existing burners such as are known from EP-A-0 306 072.
25 Generally speaking a stove combustion system for a blast furnace is typically designed for a minimum excess air-volume of 5% over the stochiometric air volume that is required for complete combustion. In practice however it appears that this value is too optimistic due to apparent poor mixing charac-30 teristics of the burner design according to the prior art. Consequently if the amount of excess air is not increased, the percentage combustibles in the waste gas will exceed legal requirements. In some situations during actual operation the minimum excess air volume is therefore increased to values between 20 35 and 30 % to remedy the situation. This however goes at the expense of cooling of the flame with which the hot blast stove is heated due to the increased air supply, and in order to compen- 2 sate for this the volume of enrichment gas has to be increased to maintain the same flame temperature.
For a typical three stove installation according to the prior art that supplies 4000 Nm3/h of hot blast at a temperature 5 of 1200 °C, the required enrichment volume is 2400 Nm3/hr of natural gas, assuming that an excess air percentage of 25 % is maintained.
It is an object of the invention to provide a hot blast stove with a ceramic or non-ceramic burner which has improved 10 combustion characteristics, and which can be fired with a decreased amount of excess air which comes closer to the typical design value of 10% over the required stoichiometric air volume.
A further object of the invention is to provide a method for improving the combustion characteristics of existing 15 burners of hot blast stoves, in a manner that is cost effective and yet capable to realize retrofitted burners with the possibility to fire such burners close to their typical design value of 5% over the required stoichiometric air volume. This is also beneficial for for environmental reasons since it reduces the 20 amount of coalmonoxide in the flue gases.
According to the invention a method for improving the combustion efficiency of a burner of a hot blast stove, and such a hot blast stove comprising a gas burner are proposed having the features of one or more of the appended claims.
25 In a first aspect of the invention at least one auxil iary air duct that has one or more outlets for secondary combustion air is provided above the burner crown. Due to the placement of this at least one auxiliary air duct an improved mixing of gas and combustion air is achieved immediately above the 30 burner crown, which diminishes the required amount of excess air for complete combustion.
The purposes of the invention are particularly effectively achieved by arranging that the at least one auxiliary air duct with one or more outlets for secondary combustion air is 35 placed so as to have a discharge opening or discharge openings of said outlets that is, or are, facing the burner crown. This secures that complete combustion can be attained as closely as possible to the burner crown. With respect to the feature to have the discharge opening or discharge openings of said outlets 40 face the burner crown, it is remarked that this includes several embodiments. It is for instance possible to have the discharge 3 opening or discharge openings of the outlets for secondary combustion air face the burner crown straight in-line with the discharge opening(s) of the burner crown's gas duct, or at an oblique angle thereto, depending on what solution best suits the 5 requirements of the situation.
In a preferred embodiment there are multiple auxiliary air ducts for secondary combustion air extending above the burner crown, all having discharge openings that are facing the burner crown, which discharge openings for secondary combustion 10 air are distributed above and along the length of the discharge openings of the gas duct and air ducts for primary combustion air.
It has been found possible by improving the mixing efficiency in accordance with the invention that the excess air 15 percentage for complete combustion can be reduced to 10 %, i.e. to an excess air volume to 1600 Nm3/h in a system that supplies 4000 Nm3/h of hot blast at a temperature of 1200 °C. This means a saving of 800 Nm3/hr as compared to the above mentioned prior art, and amounts to a saving of natural gas of 7.5 million m3 20 per year with such a three stove system that operates in a cycle of 45 minutes on blast, 80 minutes on gas, and having 90 % availability.
In a further aspect of the invention the at least one auxiliary air duct is placed above the burner crown from out-25 side, through a wall of the hot blast stove. This feature provides the possibility to improve the burner characteristics of an existing burner of a hot blast stove at affordable costs, and without necessity to demolish the existing burner or parts thereof.
30 It is further desirable that the auxiliary air duct or ducts is, respectively are provided with a mantle for a cooling medium, such as water or air. This is a suitable manner to secure the longevity of the applied auxiliary ducts or ducts despite the high temperatures at which they are required to oper-35 ate.
The invention will hereinafter be further elucidated with reference to an exemplary embodiment of a hot blast stove designed in accordance with the invention, and with reference to the drawing.
40 In the drawing: -figure 1 shows a cross-sectional side view of a part of a 4 hot blast stove with an internal combustion chamber that is provided with auxiliary gas ducts according to a first embodiment; -figure 2 shows a cross-sectional top view of the hot blast stove.in accordance with the line A-A in figure 1; 5 -figure 3 shows a cross-sectional side view of a part of a hot blast stove with an internal combustion chamber that is provided with one auxiliary gas duct according to a second embodiment ; -figure 4 shows a cross-sectional top view of the hot blast 10 stove in accordance with the line A-A in figure 3; -figure 5 shows a cross-sectional side view of an external combustion chamber that forms part of a hot blast stove, which is provided with auxiliary gas ducts; and -figure 6 shows a cross-sectional top view of the external 15 combustion chamber of the hot blast stove in accordance with the line A-A in figure 5.
Wherever in the figures the same reference numerals are applied, these numerals refer to the same parts.
Figure 1 and figure 2 show a first, embodiment of a hot 20 blast stove 1 with an internal combustion chamber in a cross- sectional side view and a cross-sectional top view respectively. The hot blast stove 1 comprises a gas burner 2, said burner 2 having a burner crown 3 at which a gas duct 4 and air ducts 5 have discharge openings 6, 7 respectively. The burner crown 3 is 25 to this end provided with a central gas duct 4 and side air ducts 5 for primary combustion air, which side air ducts 5 have their discharge openings 7 at opposite sides of the discharge opening 6 of said gas duct 4.
According to the invention the hot blast stove 1 is 30 provided with at least one auxiliary air duct 8 provided above the burner crown 3 (figure 2 shows that in this example two auxiliary air ducts 8 are applied that are placed transversely with respect to the longitudinal direction of the burner crown), which at least one auxiliary air duct 8 has one or more outlets 35 9 for secondary combustion air. This outlet or outlets 9 are ar ranged such that their discharge opening or openings are facing the burner crown 3.
Connected with the auxiliary air ducts 8 as employed according to the invention, are a fan 11 for pressurizing the 40 secondary combustion air which is to be supplied above the burner crown 3 during operation of the burner 2. Furthermore ar- 5 rangements are to be made for controlling the amount of secondary combustion air that is to be supplied. This will for instance include a controlling valve 12 which may be tuned to the amount of combustion gas that is supplied through the gas duct 4 5 of the burner 2 and the amount of primary combustion air that is supplied through the air ducts 5.
Figure 3 and figure 4 show a second embodiment of a hot blast stove 1 in a cross-sectional side view and a cross-sectional top view respectively.
10 According to this second embodiment the hot blast stove 1 is provided with only one auxiliary air duct 8 that is provided above and in the longitudinal direction of the burner crown 3. Again also in this embodiment the auxiliary air duct 8 has one or more outlets 9 for secondary combustion air.
15 The outlets 9 are arranged such that their discharge opening or openings are facing the burner crown 3. As in the first, embodiment discussed with reference to figures 1 and 2 hereinabove, and in the third embodiment to be discussed hereinafter with reference to figures 5 and 6, this means that the 20 discharge opening or discharge openings of the outlets 9 for secondary combustion air face the burner crown 3 straight inline with the discharge opening(s) of the burner crown's gas duct 6, or at an oblique angle thereto, depending on what solution best suits the requirements of the situation.
25 Reference numeral 13 that is applied in figures 3 and 4 relates to connections for supplying a cooling medium, such as water or air to a mantle of the auxiliary air duct or ducts (8).
Finally reference is made to figure 5 and figure 6 that relates to a third embodiment, showing an external combustion 30 chamber of a hot blast stove 1 in a cross-sectional side view and a cross-sectional top view respectively.
According to this third embodiment the hot blast stove 1 is provided with three auxiliary air ducts 8 provided above the burner crown 3, which auxiliary air ducts 8 have one or more 35 outlets 9 for secondary combustion air.
All the embodiments according to the figures 1-6 show an important aspect of the invention, being that the at least one auxiliary air duct 8 is placed above the burner crown 3 from outside, through a wall 10 of the hot blast stove 1. This opens 40 the possibility to upgrade existing burners of hot blast stoves at low costs. The only requirement is then to make a hole or 6 holes in the wall 10 of the hot blast stove 1 and move the auxiliary air duct or ducts 8 through these holes into position above the burner crown 3 of the burner 2.
The invention and the scope of protection that is war-5 ranted thereby, is not restricted to the exemplary embodiment which is used hereinabove to illustrate the way how the invention may be employed. The invention may be varied in many ways without departing the scope of protection of the invention as defined by the appended claims. Hence it are only the claims 10 that define said scope of protection, and the above description merely serves to resolve any ambiguity that may reside in these claims .

Claims (10)

1. Windverhitter (1) omvattende een gasbrander (2) welke brander (2) een branderkroon (3) heeft bij welke gas- (4) en luchtkanalen (5) uitlaatopeningen bezitten, voorzien van een gaskanaal (4) en luchtkanalen (5) voor primaire verbrandings- 5 lucht, welke luchtkanalen (5) uitlaatopeningen (7) bezitten op tegenover elkaar gestelde zijden van de uitlaatopening (6) van genoemde gaskanaal (4), en welke is voorzien van ten minste één hulpluchtkanaal (8) die één of meer uitgangen (9) voor secundaire verbrandingslucht heeft, met het kenmerk, dat het ten minste 10 ene hulpluchtkanaal (8) voorzien is boven de branderkroon (3).Wind heater (1) comprising a gas burner (2) which burner (2) has a burner crown (3) at which gas (4) and air ducts (5) have outlet openings provided with a gas duct (4) and air ducts (5) for primary combustion air, which air ducts (5) have outlet openings (7) on opposite sides of the outlet opening (6) of said gas duct (4), and which is provided with at least one auxiliary air duct (8) which has one or has more outlets (9) for secondary combustion air, characterized in that the at least one auxiliary air duct (8) is provided above the burner crown (3). 2. Windverhitter (1) met een gasbrander (2) volgens conclusie 1, met het kenmerk, dat de één of meer uitgangen (9) voor secundaire verbrandingslucht, van het ten minste ene hulpluchtkanaal (8) een uitlaatopening of -openingen (9) bezit 15 die gericht zijn naar de branderkroon (8).Wind heater (1) with a gas burner (2) according to claim 1, characterized in that the one or more secondary combustion air outlets (9), an outlet opening (s) (9) of the at least one auxiliary air duct (8) possesses facing the burner crown (8). 3. Windverhitter (1) met een gasbrander (2) volgens conclusie 1 of 2, met het kenmerk, dat het ten minste ene hulpluchtkanaal (8) zich uitstrekt boven de branderkroon (3) vanaf de buitenzijde van de windverhitter (1).Wind heater (1) with a gas burner (2) according to claim 1 or 2, characterized in that the at least one auxiliary air duct (8) extends above the burner crown (3) from the outside of the wind heater (1). 4. Windverhitter (1) met een gasbrander (2) volgens één der conclusies 1-3, met het kenmerk, dat er meerdere hulplucht-kanalen (8) voor secundaire verbrandingslucht zich uitstrekken boven de branderkroon (3) van buitenaf de windverhitter (1), welke uitlaatopeningen (9) bezitten die gericht zijn naar de 25 branderkroon (3), welke uitlaatopeningen (9) voor secundaire verbrandingslucht verdeeld zijn boven en langs de lengte van de uitlaatopeningen (6, 7) van het gaskanaal (4) en de luchtkanalen (5) voor primaire verbrandingslucht.Wind heater (1) with a gas burner (2) according to one of claims 1-3, characterized in that a plurality of secondary combustion air auxiliary air channels (8) extend above the burner crown (3) from outside the wind heater (1) ), which have outlet openings (9) that face the burner crown (3), which outlet openings (9) for secondary combustion air are distributed above and along the length of the outlet openings (6, 7) of the gas channel (4) and the air ducts (5) for primary combustion air. 5. Windverhitter (1) met een gasbrander (2) volgens één 30 der conclusies 1-4, met het kenmerk, dat het hulpluchtkanaal of -kanalen (8) is respectievelijk zijn voorzien van een mantel voor een koelmedium, zoals water of lucht.5. Wind heater (1) with a gas burner (2) as claimed in any of the claims 1-4, characterized in that the auxiliary air duct or ducts (8) are respectively provided with a jacket for a cooling medium, such as water or air. 6. Werkwijze voor het verbeteren van de verbrandingsef-ficiency van een brander (2) van een windverhitter (1), welke 35 brander (2) een branderkroon (3) heeft alwaar gas- (4) en luchtkanalen (5) uitlaatopeningen (6, 7) bezitten, en welke brander (2) is voorzien van een gaskanaal (4) en luchtkanalen (5) voor verbrandingslucht, welke luchtkanalen (5) hun uitlaatopeningen - 8 - (7) op tegenovergestelde zijden van de uitlaatopeningen (6) van genoemd gaskanaal (4) hebben, met het kenmerk, dat het ten minste ene hulpluchtkanaal (8) met één of meer uitgangen (9) voor secundaire verbrandingslucht voorzien is boven de branderkroon 5 (3) .6. Method for improving the combustion efficiency of a burner (2) of a wind heater (1), which burner (2) has a burner crown (3) where gas (4) and air ducts (5) outlet openings (6) , 7), and which burner (2) is provided with a gas channel (4) and air channels (5) for combustion air, which air channels (5) have their outlet openings - 8 - (7) on opposite sides of the outlet openings (6) of said gas channel (4), characterized in that the at least one auxiliary air channel (8) with one or more secondary combustion air outlets (9) is provided above the burner crown 5 (3). 7. Werkwijze voor het verbeteren van de verbrandingsef-ficiency van een brander (2) van een windverhitter (1) volgens conclusie 6, met het kenmerk, dat het ten minste ene hulpluchtkanaal (8) met één of meer uitgangen (9) voor secundaire ver- 10 brandingslucht is geplaatst met een uitlaatopening of uitlaatopeningen die is of zijn gericht naar de branderkroon (3).Method for improving the combustion efficiency of a burner (2) of a wind heater (1) according to claim 6, characterized in that the at least one auxiliary air duct (8) with one or more outputs (9) for secondary combustion air is placed with an outlet opening or outlet openings directed towards the burner crown (3). 8. Werkwijze voor het verbeteren van de verbrandingsef-ficiency van een brander (2) van een windverhitter (1) volgens conclusie 6 of 7, met het kenmerk, dat het ten minste ene hulp- 15 luchtkanaal (8) is geplaatst boven de branderkroon (3) vanaf de buitenzijde door een wand (10) van de windverhitter (1).8. Method for improving the combustion efficiency of a burner (2) of a wind heater (1) according to claim 6 or 7, characterized in that the at least one auxiliary air duct (8) is placed above the burner crown (3) from the outside through a wall (10) of the wind heater (1). 9. Werkwijze voor het verbeteren van de verbrandingsef-ficiency van een brander (2) van een windverhitter (1) volgens één der conclusies 6-8, met het kenmerk, dat verscheidene 20 hulplucht.kanalen (8) voor secundaire verbrandingslucht geplaatst zijn boven de branderkroon (3) vanaf de buitenzijde van de windverhitter (1), waarbij alle genoemde hulpluchtkanalen (8) zijn geplaatst met hun uitlaatopeningen (9) gericht naar de branderkroon (3), welke uitlaatopeningen voor secundaire verbrandings- 25 lucht gedistribueerd boven en langs de lengte van de uitlaatopeningen (6, 7) van het gaskanaal (4) en de luchtkanalen (5) voor primaire verbrandingslucht, verdeeld aangebracht zijn.9. Method for improving the combustion efficiency of a burner (2) of a wind heater (1) according to one of claims 6-8, characterized in that several auxiliary air channels (8) for secondary combustion air are placed above the burner crown (3) from the outside of the wind heater (1), wherein all said auxiliary air ducts (8) are placed with their outlet openings (9) directed towards the burner crown (3), which outlet openings for secondary combustion air are distributed above and along the length of the outlet openings (6, 7) of the gas channel (4) and the air channels (5) for primary combustion air are arranged in a divided manner. 10. Werkwijze voor het verbeteren van de verbrandings-efficiency van een brander (2) van een windverhitter (1) volgens 30 één der conclusies 6-8, met het kenmerk, dat het hulpluchtkanaal of -luchtkanalen (8) is respectievelijk zijn voorzien van een mantel voor een koelmedium, zoals water of lucht.10. Method for improving the combustion efficiency of a burner (2) of a wind heater (1) according to any one of claims 6-8, characterized in that the auxiliary air duct or air ducts (8) is respectively provided with a jacket for a cooling medium, such as water or air.
NL2003754A 2009-11-04 2009-11-04 Method for improving the combustion efficiency of a burner of a hot blast stove, and such a hot blast stove comprising a gas burner. NL2003754C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL2003754A NL2003754C2 (en) 2009-11-04 2009-11-04 Method for improving the combustion efficiency of a burner of a hot blast stove, and such a hot blast stove comprising a gas burner.
PCT/NL2010/050732 WO2011056069A2 (en) 2009-11-04 2010-11-02 Method for improving the combustion efficiency of a burner of a hot blast stove, and such a hot blast stove comprising a gas burner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2003754 2009-11-04
NL2003754A NL2003754C2 (en) 2009-11-04 2009-11-04 Method for improving the combustion efficiency of a burner of a hot blast stove, and such a hot blast stove comprising a gas burner.

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NL2003754C2 true NL2003754C2 (en) 2011-05-10

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR394292A (en) * 1908-09-15 1909-01-19 Fitz Charles Mason Mc Carty William Metallurgical furnace
US3297310A (en) * 1964-02-03 1967-01-10 Licencia Talalmanyokat Hot blast stoves for combusting quality fuels
DE1451460A1 (en) * 1963-08-27 1969-01-23 Koppers Gmbh Heinrich Combustion device for one-room tower-like gas or wind heaters
DE2532437A1 (en) * 1975-07-19 1977-02-03 Krupp Koppers Gmbh Preheating cowper stoves to avoid damaging silica refractories - using one hot gas generator connected to main hot wind duct
US4054409A (en) * 1975-05-15 1977-10-18 Nippon Kokan Kabushiki Kaisha Swirling burners for use in hot blast stoves
US4883003A (en) * 1988-09-26 1989-11-28 Hoskinson Gordon H Secondary combustion chamber for an incinerator
WO1993025850A1 (en) * 1992-06-05 1993-12-23 Hagstroem Ulf A method of minimizing disruption caused by depositions on a supply means for a combustion or gasification plant and such a supply means
WO2004044493A2 (en) * 2002-11-14 2004-05-27 Forschungszentrum Karlsruhe Gmbh Device for gas incorporation in a jet flow on a single plane

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8702036A (en) 1987-08-31 1989-03-16 Hoogovens Groep Bv CERAMIC BURNER FOR GAS FOR A FIRE SHAFT FROM A WIND HEATER OF A MAIN OVEN.
NL9200486A (en) 1992-03-16 1993-10-18 Hoogovens Groep Bv CERAMIC BURNER FOR A FIRE SHAFT FROM A WIND HEATER OF A MAIN OVEN.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR394292A (en) * 1908-09-15 1909-01-19 Fitz Charles Mason Mc Carty William Metallurgical furnace
DE1451460A1 (en) * 1963-08-27 1969-01-23 Koppers Gmbh Heinrich Combustion device for one-room tower-like gas or wind heaters
US3297310A (en) * 1964-02-03 1967-01-10 Licencia Talalmanyokat Hot blast stoves for combusting quality fuels
US4054409A (en) * 1975-05-15 1977-10-18 Nippon Kokan Kabushiki Kaisha Swirling burners for use in hot blast stoves
DE2532437A1 (en) * 1975-07-19 1977-02-03 Krupp Koppers Gmbh Preheating cowper stoves to avoid damaging silica refractories - using one hot gas generator connected to main hot wind duct
US4883003A (en) * 1988-09-26 1989-11-28 Hoskinson Gordon H Secondary combustion chamber for an incinerator
WO1993025850A1 (en) * 1992-06-05 1993-12-23 Hagstroem Ulf A method of minimizing disruption caused by depositions on a supply means for a combustion or gasification plant and such a supply means
WO2004044493A2 (en) * 2002-11-14 2004-05-27 Forschungszentrum Karlsruhe Gmbh Device for gas incorporation in a jet flow on a single plane

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WO2011056069A3 (en) 2011-06-30

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