AU2008202277A1 - Metallurgical gas burner - Google Patents
Metallurgical gas burner Download PDFInfo
- Publication number
- AU2008202277A1 AU2008202277A1 AU2008202277A AU2008202277A AU2008202277A1 AU 2008202277 A1 AU2008202277 A1 AU 2008202277A1 AU 2008202277 A AU2008202277 A AU 2008202277A AU 2008202277 A AU2008202277 A AU 2008202277A AU 2008202277 A1 AU2008202277 A1 AU 2008202277A1
- Authority
- AU
- Australia
- Prior art keywords
- gas
- steam generator
- swirlers
- flow
- gas burner
- 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.)
- Abandoned
Links
Classifications
-
- 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
- F23D14/24—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 at least one of the fluids being submitted to a swirling motion
-
- 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
- F23D2900/14—Special features of gas burners
- F23D2900/14002—Special features of gas burners of premix or non premix types, specially adapted for the combustion of low heating value [LHV] gas
Description
AUSTRALIA
PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT (Original) APPLICATION NO:
LODGED:
COMPLETE SPECIFICATION LODGED:
ACCEPTED:
PUBLISHED:
RELATED ART: NAME OF APPLICANT: ACTUAL INVENTOR(S): ADDRESS FOR SERVICE: INVENTION TITLE: Hitachi Power Europe GmbH Bernhard Zimmermann Robert Melchior Klaus Mangelmans LORD AND COMPANY, Patent and Trade Mark Attorneys, of 4 Douro Place, West Perth, Western Australia, 6005, AUSTRALIA.
"METALLURGICAL GAS BURNER" DETAILS OF ASSOCIATED APPLICATION NO'S: German Patent Application Number 10 2007 025 051.9 filed on 29 May 2007 The following Statement is a full description of this invention including the best method of performing it known to me/us: 00
TITLE
"METALLURGICAL GAS BURNER" The invention relates to a steam generator gas burner for burning gases of low calorific c, value, which comprises a core air tube, a gas tube arranged coaxially around the core air s tube to form a gas flow cross section, in particular an annular gas flow cross section, and at least one further tube element arranged coaxially around the gas tube to form a 00 secondary air flow cross section, in particular an annular secondary air flow cross section, 00 Swherein first swirlers being arranged in the gas flow cross section.
When forming gas firing systems for steam generators, gas burners which burn gases of low calorific value are also used. Such gases of low calorific value are made available in particular in the vicinity of metallurgical plants as what are known as metallurgical gases.
They may take the form of top gas, blast furnace gas, converter gas, coke-oven gas or similar process-residue-gases.
For burning these gases, it is known from practice to provide customary gas burners with an additional ring cross section, through which the gas of low calorific value is fed to the burner mouth and the burner flame.
In the case of gas firing systems, pressure vibrations may occur in the region of the combustion chamber and lead to damage to the lining of the steel structure. Pressure vibrations occur where there is a source of excitation, a resonant cavity and a connection via pipelines. The occurrence of pressure vibrations in the firing system is a consequence of the technical properties of the overall installation in terms of flow, heat and 00 O combustion as well as the acoustic properties. The basis for pressure vibrations is a regenerative cycle in which the supply lines of the resonant system, the burner, the coupling element and the flame including the combustion chamber are the source of excitation and intensification. The pressure vibrations are attributable to a sudden S 5 increase in volume after the ignition of the combustible fuel-air mixture. If the N, combustion produces sufficiently strong pulses with a frequency close to the natural N frequency of the combustion chamber, a resonance vibration is created, causing the 00 Sadditional loading. With increasing output of the steam generator, and consequently the burner, and with increasing caloric value of the fuel gas greater levels of sound energy are transferred to the combustion chamber walls. Since maximum values of the energy conversion per unit of space and time, consequently also great fluctuations, occur specifically in flames that are short, and consequently hot, in contrast a smooth combustion control is successful in avoiding excitation of resonance vibration as a result of delayed reaction.
From practice a steam generator gas burner of the generic type is known that has swirlers arranged in the gas flow cross section of the gas of low calorific value. With the aid of these swirlers, on the one hand the mixing between gas of low calorific value and combustion air is influenced, but on the other hand so too is the gas outlet velocity, thereby ensuring a stably burning combustion.
Often, however, gases produced in metallurgical plants are mixed there and are then fed to the steam generator gas burner as metallurgical gas of low calorific value. In the case of such mixing of a number of metallurgical gases the properties of the fuel, in particular 00 the calorific value of the combustion gas fed to the steam generator gas burner, change, depending on the mixing ratio of the various gases. The varying properties of the fuel have an influence on the formation of the flame and can then in turn lead to combustion Schamber vibrations being caused by the combustion. With increasing ignition intensity, which occurs for example when there is a higher calorific value of the combustible gas, Sthe excitation energy increases. Under certain boundary conditions, a resonance vibration 00 of the flue gas column may then occur in the combustion chamber.
The invention is accordingly based on the object of providing a solution which makes it possible to adapt a steam generator gas burner to varying properties of the combustible gas, in particular a fluctuating calorific value, while taking into consideration the respective ignition intensity.
In the case of a steam generator gas burner of the type referred to at the beginning, this object is achieved according to the invention by the first swirlers being adjustably arranged.
Because of the fact that the first swirlers are adjustably arranged within the gas flow cross section, it is possible, if appropriate, to influence the degree of swirling of the flowing combustion gas of low calorific value produced by the first swirlers for adjustment of the tangential velocity component of the gas, and consequently the degree of swirling of the combustible gas flow, even during the operation of a steam generator gas burner. The first swirlers have the effect that the combustible gas flow, initially flowing in the longitudinally axial direction of the gas burner, experiences a deflection in the tangential 00 direction, which imparts a swirl pulse, known as the combustible gas swirl, to the combustible gas flow flowing again in the longitudinally axial direction after leaving the first swirlers. By adjusting the combustible gas swirl, i.e. varying the amount and the ¢€3 degree/inclination of the deflection of the combustible gas flow from its original 5 longitudinally axial direction of flow into a tangential direction of deflection, influence
(N-
can be brought to bear on the mixing taking place in the mouth region of the burner of the N combusible gas of low calorific value with the primary or core air added in the core air Stube and the secondary air added radially outside. Depending on the respectively applicable properties of the combustible gas, in particular the respective calorific value of the combustible gas, the first swirlers are set and if applicable adjusted during operation in such a way that optimum burning and flame formation take place, avoiding the occurrence of furnace chamber vibrations. The degree of swirling to be achieved by the position of the first swirlers can in this case both be set, and made to suit the quality of gas to be burned, in a one-off event when the steam generator gas burner is put into operation and be permanently and/or continuously controlled and adapted in accordance with the properties of the combustible material and the combustible gas flow during the operation of the steam generator gas burner.
In a particularly favourable way, the first swirlers can be arranged adjustably in the gas flow cross section in such a way that the first swirlers are formed as swirl blades extending in the radial direction of the core air tube. As a result, the first swirlers in the form of blades protrude from the outer side of the core air tube into the gas flow cross section, and can therefore be rotatably formed, in particular about the longitudinal axis.
Rotation about the longitudinal axis then allows a greater or smaller cross-sectional area 00 O of the respective swirl blades, depending on the rotational position, to oppose the direction of flow of the combustible gas flow, and consequently set the combustible gas flow into a different degree of swirling, acting as a flow obstacle and a flow diverting area. For this purpose, the invention provides in a refinement that the first swirlers are rotatably arranged respectively about their longitudinal axis, extending in the radial direction of the core air tube, on the outside of the core air tube.
00 SIt is expedient furthermore if the first swirlers are arranged upstream of the mouth regions of the core air tube and the gas tube into the furnace chamber, which the invention likewise provides. As a result, an evening out of the combustible gas flow provided with a swirling pulse is achieved before it reaches the mouth region in the burner. In particular, this is expedient whenever the secondary air is provided with a corresponding degree of swirl. According to a development of the invention, it is then also of advantage in this respect if the first swirlers are arranged at a position situated further upstream with respect to second swirlers arranged in the secondary air flow cross section.
Altogether, the arrangement of first swirlers in the gas flow cross section, but also the arrangement of second swirlers in the secondary air flow cross section have the effect of allowing delayed mixing of the combustible gas and the combustion air to be achieved in the outlet region of the steam generator gas burner to the furnace chamber, with the aid of which the ignition can be positioned optimally in each case.
To assist the delayed mixing of the combustible gas and the combustion air further, the invention is distinguished in a development by a flow directing ring, which is arranged in 00 the mouth region at the end face of the gas tube and has first flow areas, deflecting gas flowing in the gas flow cross section in the direction towards the burner longitudinal axis, and second flow areas, deflecting air flowing in the secondary air flow cross section in c, the direction away from the burner longitudinal axis. As a result, the secondary air flow 5 is deflected outwards and the combustion gas flow is deflected inwards, and consequently the meeting of the two gases is delayed.
00 SIt is of advantage here if the flow directing ring is arranged axially adjustably on the gas tube, which the invention provides in a refinement.
A favourable design of the flow directing ring can be realized if the flow directing ring has holes, especially an area of the flow directing ring that covers the gas flow cross section of the gas tube is formed as a perforated plate.
Advantageous materials for producing the flow directing ring are heat-resistant sheet metal, ceramic material or cast metal, in particular centrifugally cast metal, the invention finally fuirther providing in an advantageous refinement that the flow directing ring is cooled and/or is provided with a ceramic coating.
The invention is explained in more detail below by way of example on the basis of the single figure.
The single figure shows in a schematic and partially sectional side view and crosssectional representation a steam generator gas burner denoted overall by 1, which is 00 designed in the form of what is known as an annular burner. The burner has a core air tube 2, which is arranged in the centre of the steam generator gas burner 1, coaxially around the longitudinal axis 3 of the latter. Combustion air is supplied as core air c, through the core air tube 2 to the mouth side of the steam generator gas burner 1 that is 5 facing a furnace chamber 4 of a steam generator. Formed around the outside of the core air tube 2, at least in the further end region of the steam generator gas burner 1 on the 00 mouth side, is an annular gas flow cross section 5. This gas flow cross section 5 is Sdelimited on the outside by a gas tube 6, which is arranged coaxially around the core air tube 2. Formed around the gas tube 6 is a further flow region as an annular secondary air flow cross section 7, which is enclosed and delimited on the outside by a tube element 8.
A combustible or combustion gas of low calorific value, known as a metallurgical gas, which can occur at various production locations in a metallurgical plant, is supplied through the gas flow cross section 5 to the mouth region of the steam generator gas burner 1. The metallurgical gas may be a mixture of various gases such as blast-furnace top gas, coke-oven gas or the like. Secondary combustion air, known as secondary air, is fed through the secondary air flow cross section 7 to the mouth region of the steam generator gas burner 1. In the gas flow cross section 5 first swirlers 9 and in the secondary air flow cross section 7 second swirlers 10 are arranged. The first and second swirlers 9, 10 are arranged as swirler rings on the respective tube, the core air tube 2 in the case of the first swirlers 9 and the gas tube 6 in the case of the second swirlers 10, and extend through the respective flow cross section 5, 7 to the next tube, the gas tube 6 in the case of the first swirlers 9 and the tube element 8 in the case of the second swirlers 00 O The first swirlers 9 take the form of swirl blades and form a ring of blades. The respective longitudinal axis of each of the individual first swirlers 9 of the ring of blades is positioned such that it is radially directed at the longitudinal axis 3. Each individual ¢€3 swirl blade 9 is rotatably about this longitudinal axis, and consequently adjustable in its relative position in the gas flow cross section 5. Both the first swirlers 9 and the second N, swirlers 10 are arranged upstream of the mouth opening of the steam generator gas burner N 1 towards the furnace chamber 4 within the respective flow cross section 5, 7, the first 00 Sswirlers 9 being positioned further upstream than the second swirlers 10 with respect to the mouth opening of the steam generator gas burner 1.
A flow directing ring 11 is arranged in the mouth opening of the gas tube 6. It is arranged and/or fastened on the inner side of the gas tube 6 such that it is adjustable axially in the direction of the longitudinal axis 3. The flow directing ring 11 has flow elements 12, which have first flow areas 12a, interacting with the gas flow cross section 5, and second flow areas 12b, interacting with the secondary air flow cross section 7. The first flow areas 12a are designed here in such a way that gas flowing in the gas flow cross section is deflected in the direction towards the burner longitudinal axis 3 and the second flow areas 12b are designed here in such a way that air flowing in the secondary air flow cross section 7 is deflected in the direction away from the burner longitudinal axis 3. The flow directing ring 11 is in this case also formed in such a way that its annular end face 13 merely covers the outlet side of the gas flow cross section 5 on the mouth side, and this area is provided in the form of a perforated plate. Only the second flow areas 12b reach on the outside slightly into the continuation of the secondary air flow cross section 7 into the furnace chamber 4. The flow directing ring 11 consists of a metallic cast material, in 00 O particular centrifugally cast material, but may also be produced from a ceramic material or a heat-resistant sheet metal. Furthermore, the flow directing ring 11 may be cooled and/or provided with a ceramic coating.
As known from customary gas burners, arranged inside the core air tube 2 are gas lances N 14a, 14b, with which it is also additionally possible if desired to feed gas of high calorific 00 value, for example natural gas, to the mouth of the steam generator gas burner, for 00 0 burning as supplementary combustible gas. Furthermore, an oil or gas ignition burner is arranged in the centre of the burner along the longitudinal axis 3.
Modifications and variations as would be apparent to a skilled addressee are deemed to be within the scope of the present invention.
Claims (6)
- 2. Steam generator gas burner according to claim 1, characterized in that the first swirlers are formed as swirl blades extending in the radial direction of the core air tube
- 3. Steam generator gas burner according to claim 1 or 2, characterized in that the first swirlers are rotatably arranged respectively about their longitudinal axis, extending in the radial direction of the core air tube on the outside of the core air tube
- 4. Steam generator gas burner according to one of the preceding claims, characterized in that the first swirlers are arranged upstream of the mouth regions of the core air tube and the gas tube 00 Steam generator gas burner according to one of the preceding claims, characterized in that the first swirlers are arranged at a position situated further upstream with respect to second swirlers (10) arranged in the secondary c, air flow cross section S6. Steam generator gas burner according to one of the preceding claims, 00 characterized in that a flow directing ring (11) is arranged at the end face in the Smouth region of the gas tube and has first flow areas (12a), deflecting gas flowing in the gas flow cross section in the direction towards the burner longitudinal axis and second flow areas (12b), deflecting air flowing in the secondary air flow cross section in the direction away from the burner longitudinal axis
- 7. Steam generator gas burner according to claim 6, characterized in that the flow directing ring (11) is arranged axially adjustably on the gas tube
- 8. Steam generator gas burner according to claim 6 or 7, characterized in that the flow directing ring (11) has holes, especially an area (13) of the flow directing ring (11) that covers the gas flow cross section of the gas tube is formed as a perforated plate.
- 9. Steam generator gas burner according to one of claims 6 to 8, characterized in that the flow directing ring (11) consists of heat-resistant sheet metal, ceramic material or a cast metal, in particular centrifugally cast metal. 00 Steam generator gas burner according to one of claims 6 to 9, characterized in Z that the flow directing ring (11) is cooled and/or provided with a ceramic coating. 00
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007025051A DE102007025051B4 (en) | 2007-05-29 | 2007-05-29 | Cabin gas burner |
| DE102007025051.9 | 2007-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2008202277A1 true AU2008202277A1 (en) | 2008-12-18 |
Family
ID=39720330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2008202277A Abandoned AU2008202277A1 (en) | 2007-05-29 | 2008-05-23 | Metallurgical gas burner |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20080299506A1 (en) |
| EP (1) | EP1998112A3 (en) |
| CN (1) | CN101315188A (en) |
| AR (1) | AR066738A1 (en) |
| AU (1) | AU2008202277A1 (en) |
| BR (1) | BRPI0801968A2 (en) |
| CA (1) | CA2631766A1 (en) |
| CL (1) | CL2008001561A1 (en) |
| DE (1) | DE102007025051B4 (en) |
| RU (1) | RU2008119392A (en) |
| UA (1) | UA90768C2 (en) |
| ZA (1) | ZA200804616B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8408896B2 (en) * | 2007-07-25 | 2013-04-02 | Lummus Technology Inc. | Method, system and apparatus for firing control |
| EP2479491B1 (en) * | 2011-01-20 | 2014-03-26 | Fortum OYJ | Method and burner for burning lean gas in a power plant boiler |
| CN102226522B (en) * | 2011-06-01 | 2013-01-23 | 中国科学院广州能源研究所 | Gas burner |
| CN103822208A (en) * | 2012-11-16 | 2014-05-28 | 航天长征化学工程股份有限公司 | Burner of gasification furnace |
| EP3364105B1 (en) | 2017-02-16 | 2019-11-27 | Vysoké ucení Technické v Brne | Burner for low calorific fuels |
Family Cites Families (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1995934A (en) * | 1933-09-18 | 1935-03-26 | Trust Company | Gas burner |
| DE1551805A1 (en) * | 1967-04-22 | 1970-03-26 | Koppers Wistra Ofenbau Gmbh | Burners for heat treatment furnaces |
| US3822654A (en) * | 1973-01-08 | 1974-07-09 | S Ghelfi | Burner for burning various liquid and gaseous combustibles or fuels |
| DE2933060B1 (en) * | 1979-08-16 | 1980-10-30 | Steinmueller Gmbh L & C | Burner for burning dusty fuels |
| US4455949A (en) * | 1980-02-13 | 1984-06-26 | Brennstoffinstitut Freiberg | Burner for gasification of powdery fuels |
| JPS5714106A (en) * | 1980-06-27 | 1982-01-25 | Kawasaki Steel Corp | Method and apparatus for combustion with low nox in radiant tube burner |
| US4551090A (en) * | 1980-08-25 | 1985-11-05 | L. & C. Steinmuller Gmbh | Burner |
| JPS60226609A (en) * | 1984-04-23 | 1985-11-11 | Babcock Hitachi Kk | Combustion device for coal |
| JPS60235910A (en) * | 1984-05-09 | 1985-11-22 | Nippon Furnace Kogyo Kaisha Ltd | Burner for low load combustion countermeasure |
| US4952136A (en) * | 1987-05-12 | 1990-08-28 | Control Systems Company | Burner assembly for oil fired furnaces |
| US4930430A (en) * | 1988-03-04 | 1990-06-05 | Northern Engineering Industries Plc | Burners |
| US4915619A (en) * | 1988-05-05 | 1990-04-10 | The Babcock & Wilcox Company | Burner for coal, oil or gas firing |
| US4836772A (en) * | 1988-05-05 | 1989-06-06 | The Babcock & Wilcox Company | Burner for coal, oil or gas firing |
| US4931013A (en) * | 1989-07-06 | 1990-06-05 | Mg Industries | High-temperature burner |
| US5308239A (en) * | 1992-02-04 | 1994-05-03 | Air Products And Chemicals, Inc. | Method for reducing NOx production during air-fuel combustion processes |
| DE4217879A1 (en) * | 1992-05-29 | 1993-12-02 | Babcock Energie Umwelt | Burner for dusty fuel |
| DE4228816C2 (en) * | 1992-08-29 | 1998-08-06 | Mtu Muenchen Gmbh | Burners for gas turbine engines |
| US5256352A (en) * | 1992-09-02 | 1993-10-26 | United Technologies Corporation | Air-liquid mixer |
| DE4328130A1 (en) * | 1993-08-20 | 1995-02-23 | Saacke Gmbh & Co Kg | Method and device for low-emission combustion of flowable and / or gaseous fuels with internal flue gas recirculation |
| US5700143A (en) * | 1994-01-24 | 1997-12-23 | Hauck Manufacturing Company | Combination burner with primary and secondary fuel injection |
| DE19527083A1 (en) * | 1995-07-25 | 1997-01-30 | Lentjes Kraftwerkstechnik | Process and burner for reducing NO¶x¶ formation from coal dust combustion |
| US5743723A (en) * | 1995-09-15 | 1998-04-28 | American Air Liquide, Inc. | Oxy-fuel burner having coaxial fuel and oxidant outlets |
| DE19607676A1 (en) * | 1996-02-29 | 1997-09-11 | Steinmueller Gmbh L & C | Burner for coal dust and air mixture |
| GB9616442D0 (en) * | 1996-08-05 | 1996-09-25 | Boc Group Plc | Oxygen-fuel burner |
| US5829369A (en) * | 1996-11-12 | 1998-11-03 | The Babcock & Wilcox Company | Pulverized coal burner |
| DE69730702T3 (en) * | 1996-12-27 | 2009-01-22 | Sumitomo Osaka Cement Co., Ltd. | DEVICE AND METHOD FOR COMBUSING FUEL |
| US5697306A (en) * | 1997-01-28 | 1997-12-16 | The Babcock & Wilcox Company | Low NOx short flame burner with control of primary air/fuel ratio for NOx reduction |
| US5904475A (en) * | 1997-05-08 | 1999-05-18 | Praxair Technology, Inc. | Dual oxidant combustion system |
| FR2783595B1 (en) * | 1998-09-22 | 2000-10-20 | Air Liquide | METHOD FOR HEATING AN OVEN |
| FR2788110B1 (en) * | 1998-12-30 | 2001-02-16 | Air Liquide | COMBUSTION PROCESS AND ITS USES FOR THE PREPARATION OF GLASS AND METAL |
| DE20009524U1 (en) * | 2000-05-26 | 2000-09-21 | Erc Emissions Reduzierungs Con | Burner with swirl regulator |
| JP4969015B2 (en) * | 2000-08-04 | 2012-07-04 | バブコック日立株式会社 | Solid fuel burner and combustion method using solid fuel burner |
| US6539724B2 (en) * | 2001-03-30 | 2003-04-01 | Delavan Inc | Airblast fuel atomization system |
| US6752620B2 (en) * | 2002-01-31 | 2004-06-22 | Air Products And Chemicals, Inc. | Large scale vortex devices for improved burner operation |
| US6773256B2 (en) * | 2002-02-05 | 2004-08-10 | Air Products And Chemicals, Inc. | Ultra low NOx burner for process heating |
| US20070048679A1 (en) * | 2003-01-29 | 2007-03-01 | Joshi Mahendra L | Fuel dilution for reducing NOx production |
| DE10332860A1 (en) * | 2003-07-18 | 2005-02-10 | Linde Ag | Gas burner for separately supplied gases has burner head made of aluminum material in region of output end of gas input channel |
| US7430970B2 (en) * | 2005-06-30 | 2008-10-07 | Larue Albert D | Burner with center air jet |
| DE102005032109B4 (en) * | 2005-07-07 | 2009-08-06 | Hitachi Power Europe Gmbh | Carbon dust burner for low NOx emissions |
| US8113824B2 (en) * | 2006-06-01 | 2012-02-14 | Babcock & Wilcox Power Generation Group, Inc. | Large diameter mid-zone air separation cone for expanding IRZ |
| DE102007030269B4 (en) * | 2007-06-28 | 2014-07-17 | Mitsubishi Hitachi Power Systems Europe Gmbh | Pulverized coal burner for burning fuel supplied in dense phase conveying |
-
2007
- 2007-05-29 DE DE102007025051A patent/DE102007025051B4/en not_active Expired - Fee Related
-
2008
- 2008-05-14 EP EP08156197A patent/EP1998112A3/en not_active Withdrawn
- 2008-05-15 CA CA002631766A patent/CA2631766A1/en not_active Abandoned
- 2008-05-19 RU RU2008119392/06A patent/RU2008119392A/en not_active Application Discontinuation
- 2008-05-23 AU AU2008202277A patent/AU2008202277A1/en not_active Abandoned
- 2008-05-23 US US12/126,288 patent/US20080299506A1/en not_active Abandoned
- 2008-05-28 AR ARP080102230A patent/AR066738A1/en not_active Application Discontinuation
- 2008-05-28 ZA ZA200804616A patent/ZA200804616B/en unknown
- 2008-05-28 UA UAA200807390A patent/UA90768C2/en unknown
- 2008-05-29 CN CNA2008100977868A patent/CN101315188A/en active Pending
- 2008-05-29 BR BRPI0801968-1A patent/BRPI0801968A2/en not_active IP Right Cessation
- 2008-05-29 CL CL2008001561A patent/CL2008001561A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RU2008119392A (en) | 2009-11-27 |
| EP1998112A3 (en) | 2010-05-05 |
| BRPI0801968A2 (en) | 2009-05-05 |
| DE102007025051A1 (en) | 2008-12-04 |
| ZA200804616B (en) | 2009-02-25 |
| UA90768C2 (en) | 2010-05-25 |
| EP1998112A2 (en) | 2008-12-03 |
| AR066738A1 (en) | 2009-09-09 |
| US20080299506A1 (en) | 2008-12-04 |
| CN101315188A (en) | 2008-12-03 |
| DE102007025051B4 (en) | 2011-06-01 |
| CL2008001561A1 (en) | 2009-03-13 |
| CA2631766A1 (en) | 2008-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI72795C (en) | Procedure for igniting a carbon burner stove. | |
| EP2282119B1 (en) | Combustion liner cap assembly for combustion dynamics reduction | |
| JP4121107B2 (en) | Suppressor of flame and pressure vibration in gas turbine furnace | |
| EP2479491B1 (en) | Method and burner for burning lean gas in a power plant boiler | |
| JPH018803Y2 (en) | ||
| US20170016619A1 (en) | Start-up torch | |
| AU2008202277A1 (en) | Metallurgical gas burner | |
| KR101732396B1 (en) | Burner uint for steel making facilities | |
| EP1649219B1 (en) | Gas turbine burner | |
| EA034574B1 (en) | Top combustion stove | |
| US6145450A (en) | Burner assembly with air stabilizer vane | |
| GB2229523A (en) | Ceramic burners | |
| CN1702375A (en) | Combustible powder swirl-flow combined burner | |
| CN107339698A (en) | A kind of burner | |
| US4201539A (en) | Flame forming burner | |
| RU99596U1 (en) | BURNER | |
| CN102032562A (en) | Powdered coal burner and control method thereof, rotary kiln using the same | |
| GB1585410A (en) | Burner | |
| GB2345958A (en) | Method and apparatus for feeding pilot gas to the downstream end of a combustor | |
| RU2642997C2 (en) | Gas burner with low content of nitrogen oxides and method of fuel gas combustion | |
| EP2104803B1 (en) | Gas-turbine burner that uses, as fuel, gas with low calorific value | |
| JP2001516850A (en) | Adapter device used in stationary gas turbine equipment | |
| WO2013091634A1 (en) | A method and a burner for introducing fuel into a burning zone of a kiln | |
| JP5032071B2 (en) | Burner with central air spout | |
| JP5443525B2 (en) | NOx emission reduction method for central air jet burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |