CA2134893C - Method and combustor for the combustion of a premixed gas - Google Patents
Method and combustor for the combustion of a premixed gasInfo
- Publication number
- CA2134893C CA2134893C CA002134893A CA2134893A CA2134893C CA 2134893 C CA2134893 C CA 2134893C CA 002134893 A CA002134893 A CA 002134893A CA 2134893 A CA2134893 A CA 2134893A CA 2134893 C CA2134893 C CA 2134893C
- Authority
- CA
- Canada
- Prior art keywords
- layer
- combustor
- premixed gas
- gas
- combustion
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
-
- 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
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/002—Supplying water
- F23L7/005—Evaporated water; Steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2210/00—Noise abatement
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
An object of the present invention is to overcome the disadvantages of a conventional combustor having a fuel-air premixing nozzle wherein variation in combustion rate resulting from variation in the fuel concentration of the premixed gas cause variation in flame length and may eventually lead to the development of combustive vibration.
This invention provides a combustion method and combustor which is characterized in that a fluid (8) containing no fuel is fed between a premixed gas layer (2) formed by injecting a premixed gas through a premixing nozzle (1) and a hot gas layer (5) formed from a portion of the hot gas resulting from the combustion of the premixed gas, the hot gas layer (5) circulating or staying in a region downstream of the outlet of the premixing nozzle (1).
This invention provides a combustion method and combustor which is characterized in that a fluid (8) containing no fuel is fed between a premixed gas layer (2) formed by injecting a premixed gas through a premixing nozzle (1) and a hot gas layer (5) formed from a portion of the hot gas resulting from the combustion of the premixed gas, the hot gas layer (5) circulating or staying in a region downstream of the outlet of the premixing nozzle (1).
Description
DESCRIPTION
Title of the Invention METHOD AND COMBUSTOR FOR THE COMBUSTION OF A PREMIXED GAS
Technical Field This invention relates to a method for the combustion of a premixed gas in a combustor having a fuel-air premix-ing nozzle and useful for effecting low-NOX combustion and a combustor therefor. This invention can be applied to such combustors as gas turbine combustors, boilers, and furnaces for use in chemical industry.
Background Art Recently, in order to reduce the NOx content of exhaust gas from gas turbine combustors and the like, there is commonly employed a combustion method in which fuel is premixed with combustion air and the resulting premixed gas is burned under lean combustion conditions. This method for the combustion of a premixed gas can eliminate areas having uneven fuel concentrations and also local areas burning at higher temperatures, resulting in a marked reduction in the amount of NOx produced.
FIG. 3 illustrates a part of a burner based on the conventional method for the combustion of a premixed gas.
In this figure, reference numeral 1 designates a premixing nozzle, 2 designates a premixed gas, 3 designates a flame holder, 4 designates a flame, 5 designates a circulating or staying hot gas, 6 designates a pilot nozzle, and 7 desig-nates a pilot fuel.
The premixed gas 2 injected through the premixing nozzle 1 into the combustion chamber burns so as to go round the flame holder 3, thus forming downstream a circu-lating hot gas 5 serving for flame holding.
In this method for the combustion of a premixed gas, the combustion rate of the premixed gas (i.e., the velocity at which the flame advances into the unburned mixture) becomes higher as the temperature of the premixed gas is elevated and as the fuel concentration of the premixed gas is increased. In particular, the fuel concentration may cause marked variation in the resulting combustion rate.
Such variation in combustion rate causes variation in flame length and may eventually lead to the development of com-bustive vibration.
Disclosure of the Invention The present invention has been made for the purpose of solving the above-described problem and has for its object the provision of a method and combustor for the combustion of a premixed gas which can minimize the devel-opment of combustive vibration due to variation in the fuel concentration of the premixed gas.
In order to accomplish the above-described object, the present invention provides:
Title of the Invention METHOD AND COMBUSTOR FOR THE COMBUSTION OF A PREMIXED GAS
Technical Field This invention relates to a method for the combustion of a premixed gas in a combustor having a fuel-air premix-ing nozzle and useful for effecting low-NOX combustion and a combustor therefor. This invention can be applied to such combustors as gas turbine combustors, boilers, and furnaces for use in chemical industry.
Background Art Recently, in order to reduce the NOx content of exhaust gas from gas turbine combustors and the like, there is commonly employed a combustion method in which fuel is premixed with combustion air and the resulting premixed gas is burned under lean combustion conditions. This method for the combustion of a premixed gas can eliminate areas having uneven fuel concentrations and also local areas burning at higher temperatures, resulting in a marked reduction in the amount of NOx produced.
FIG. 3 illustrates a part of a burner based on the conventional method for the combustion of a premixed gas.
In this figure, reference numeral 1 designates a premixing nozzle, 2 designates a premixed gas, 3 designates a flame holder, 4 designates a flame, 5 designates a circulating or staying hot gas, 6 designates a pilot nozzle, and 7 desig-nates a pilot fuel.
The premixed gas 2 injected through the premixing nozzle 1 into the combustion chamber burns so as to go round the flame holder 3, thus forming downstream a circu-lating hot gas 5 serving for flame holding.
In this method for the combustion of a premixed gas, the combustion rate of the premixed gas (i.e., the velocity at which the flame advances into the unburned mixture) becomes higher as the temperature of the premixed gas is elevated and as the fuel concentration of the premixed gas is increased. In particular, the fuel concentration may cause marked variation in the resulting combustion rate.
Such variation in combustion rate causes variation in flame length and may eventually lead to the development of com-bustive vibration.
Disclosure of the Invention The present invention has been made for the purpose of solving the above-described problem and has for its object the provision of a method and combustor for the combustion of a premixed gas which can minimize the devel-opment of combustive vibration due to variation in the fuel concentration of the premixed gas.
In order to accomplish the above-described object, the present invention provides:
2 1348 ~ 3 A combustor, comprising: a pilot nozzle; a fuel-air premixing nozzle for inj ecting a premixed fuel-air gas and forming a premixed fuel-air gas layer around and coaxially said pilot nozzle; a passage for feeding a neutral fluid containing no fuel, said passage disposed between said pilot nozzle and said fuel-air premixing nozzle;
and a tip on the discharge end of said pilot nozzle for directing said neutral fluid between said premixed fuel-air gas layer and a hot gas layer formed by the combustion of said premixed fuel-air gas, said hot gas layer circulating or staying in a downstream the outlet of said premixing nozzle.
A combustion method for burning premixed gas in a combustor, comprising the steps of: forming a first layer of hot gas in a central region of said combustor;
injecting a premixed gas in a second layer that is coaxial and about said first layer;
and feeding a neutral fluid between said first and second layers, for forming a third mid-temperature layer in between said premixed gas and said hot gas.
By the above-described means, a neutral fluid is fed between the premixed gas layer and the hot gas, so that a flame is not propagated directly from the hot gas to the premixed gas. Instead, a mid-temperature gas is generated by the mixing and diffusion of the hot gas and the neutral fluid. Thereafter, the premixed gas is burned as a result of the mixing and diffusion of the mid-temperature gas and the premixed gas.
The mechanism by which the premixed gas is burned is such that the hot gas and the premixed gas intermingle with each other, during this process the premixed gas is heated Ci..
by the heat transferred from the hot gas, and combustion is initiated when the combustion starting temperature is reached.
Thus, according to the present invention, the pre-mixed gas is burned under mixing and diffusion rate con-trol, as contrasted with an ordinary premixed flame in which combustion is effected by flame propagation. Conse-quently, it is possible to achieve combustion which is little affected by the fuel concentration of the premixed gas. As used herein, "diffusion" means that the hot gas and the premixed gas intermingle with each other, and "rate control" means the controlling of the rate of such diffu-sion. "Diffusion rate control" means the controlling of the rate at which the hot gas and the premixed gas inter-mingle with each other.
Moreover, since the hot gas and the neutral fluid are mixed to generate a mid-temperature gas which is then mixed with the premixed gas, the flame temperature in this mixing region is low and the production of NOx in this region is minimized.
Furthermore, since the premixed gas is burned under diffusion rate control, the main flame is long, and heat generation or heat generation quotient can be spread in space, so that combustive vibration can be prevented. The reason why combustive vibration can be prevented is that the combustion pressure is reduced by dispersion of the heat generation and, moreover, the variation of flame length relative to the total flame length becomes smaller as a result of the prolongation of the flame.
As used herein, "heat generation quotient" means the per area combustion (dQ/dx) of fuel (Q) with respect to the axial distance (x) of a combustor.
Hrief Description of the Drawings FIG. 1 is a schematic diagram illustrating an exem-plary burner to which the present invention has been ap-plied;
FIG. 2 is a graphical representation of experimental data showing the effects of the present invention; and FIG. 3 is a schematic diagram illustrating a burner based on the conventional method for the combustion of a premixed gas.
Best Mode for Carrying Out the Invention FIG. 1 illustrates an exemplary burner for carrying out the method of the present invention. In this figure, the same elements as shown in FIG. 3 are designated by the same reference numerals and no detailed explanation thereof is given.
Referring to FIG. 1, a passage for feeding a neutral fluid 8 is formed between a premixing nozzle 1 and a pilot nozzle 6. The orifice for injecting the neutral fluid 8 into the combustion chamber is configured so as to cause the neutral fluid 8 to'flow out along the inner wall sur-face of a flame holder 3 and the outer wall surface of a tip 9 defined at the discharge end of the pilot nozzle 6. The neutral fluid 8 is a fluid containing no fuel and may comprise, for example, air, exhaust gas, steam or the like.
In the arrangement of FIG. 1, a neutral fluid is fed between a layer of a premixed gas 2 injected through the premixing nozzle 1 and a circulating hot gas 5, so that the premixed gas 2 injected through the premixing nozzle 1 does not come into direct contact with the hot gas 5. The neutral fluid 8 is first mixed with the hot gas 5 to gener-ate a mid-temperature gas. Then, in a downward region, this mid-temperature gas is mixed with the premixed gas 2 to form a flame 4.
Thus, since the hot gas 5 does not come into direct contact with the premixed gas 2 fed through the premixing nozzle 1, it is unlikely that a flame is propagated direct-ly from the hot gas 5 to the premixed gas 2 and ignites the premixed gas forcibly before the premixed gas diffuses sufficiently, as is the case with conventional burners.
That is, the premixed gas 2 separated from the hot gas 5 by the neutral fluid 8 can be burned under diffusion rate control, so that a long main flame results. This means that the heat generation quotient can be spatially spread and small to prevent combustive vibration.
and a tip on the discharge end of said pilot nozzle for directing said neutral fluid between said premixed fuel-air gas layer and a hot gas layer formed by the combustion of said premixed fuel-air gas, said hot gas layer circulating or staying in a downstream the outlet of said premixing nozzle.
A combustion method for burning premixed gas in a combustor, comprising the steps of: forming a first layer of hot gas in a central region of said combustor;
injecting a premixed gas in a second layer that is coaxial and about said first layer;
and feeding a neutral fluid between said first and second layers, for forming a third mid-temperature layer in between said premixed gas and said hot gas.
By the above-described means, a neutral fluid is fed between the premixed gas layer and the hot gas, so that a flame is not propagated directly from the hot gas to the premixed gas. Instead, a mid-temperature gas is generated by the mixing and diffusion of the hot gas and the neutral fluid. Thereafter, the premixed gas is burned as a result of the mixing and diffusion of the mid-temperature gas and the premixed gas.
The mechanism by which the premixed gas is burned is such that the hot gas and the premixed gas intermingle with each other, during this process the premixed gas is heated Ci..
by the heat transferred from the hot gas, and combustion is initiated when the combustion starting temperature is reached.
Thus, according to the present invention, the pre-mixed gas is burned under mixing and diffusion rate con-trol, as contrasted with an ordinary premixed flame in which combustion is effected by flame propagation. Conse-quently, it is possible to achieve combustion which is little affected by the fuel concentration of the premixed gas. As used herein, "diffusion" means that the hot gas and the premixed gas intermingle with each other, and "rate control" means the controlling of the rate of such diffu-sion. "Diffusion rate control" means the controlling of the rate at which the hot gas and the premixed gas inter-mingle with each other.
Moreover, since the hot gas and the neutral fluid are mixed to generate a mid-temperature gas which is then mixed with the premixed gas, the flame temperature in this mixing region is low and the production of NOx in this region is minimized.
Furthermore, since the premixed gas is burned under diffusion rate control, the main flame is long, and heat generation or heat generation quotient can be spread in space, so that combustive vibration can be prevented. The reason why combustive vibration can be prevented is that the combustion pressure is reduced by dispersion of the heat generation and, moreover, the variation of flame length relative to the total flame length becomes smaller as a result of the prolongation of the flame.
As used herein, "heat generation quotient" means the per area combustion (dQ/dx) of fuel (Q) with respect to the axial distance (x) of a combustor.
Hrief Description of the Drawings FIG. 1 is a schematic diagram illustrating an exem-plary burner to which the present invention has been ap-plied;
FIG. 2 is a graphical representation of experimental data showing the effects of the present invention; and FIG. 3 is a schematic diagram illustrating a burner based on the conventional method for the combustion of a premixed gas.
Best Mode for Carrying Out the Invention FIG. 1 illustrates an exemplary burner for carrying out the method of the present invention. In this figure, the same elements as shown in FIG. 3 are designated by the same reference numerals and no detailed explanation thereof is given.
Referring to FIG. 1, a passage for feeding a neutral fluid 8 is formed between a premixing nozzle 1 and a pilot nozzle 6. The orifice for injecting the neutral fluid 8 into the combustion chamber is configured so as to cause the neutral fluid 8 to'flow out along the inner wall sur-face of a flame holder 3 and the outer wall surface of a tip 9 defined at the discharge end of the pilot nozzle 6. The neutral fluid 8 is a fluid containing no fuel and may comprise, for example, air, exhaust gas, steam or the like.
In the arrangement of FIG. 1, a neutral fluid is fed between a layer of a premixed gas 2 injected through the premixing nozzle 1 and a circulating hot gas 5, so that the premixed gas 2 injected through the premixing nozzle 1 does not come into direct contact with the hot gas 5. The neutral fluid 8 is first mixed with the hot gas 5 to gener-ate a mid-temperature gas. Then, in a downward region, this mid-temperature gas is mixed with the premixed gas 2 to form a flame 4.
Thus, since the hot gas 5 does not come into direct contact with the premixed gas 2 fed through the premixing nozzle 1, it is unlikely that a flame is propagated direct-ly from the hot gas 5 to the premixed gas 2 and ignites the premixed gas forcibly before the premixed gas diffuses sufficiently, as is the case with conventional burners.
That is, the premixed gas 2 separated from the hot gas 5 by the neutral fluid 8 can be burned under diffusion rate control, so that a long main flame results. This means that the heat generation quotient can be spatially spread and small to prevent combustive vibration.
FIG. 2 is a graph showing the states of combustive vibration when combustion was effected in a burner using air as the neutral fluid 8 according to the method of the present invention and in a conventional burner. In this graph, the ordinate shows the internal pressure fluctuation of the combustor which serves as a measure of combustive vibration, and the abscissa shows the proportion of the pilot fuel (i.e., the pilot fuel 7 for the formation of a diffusion flame) to the total fuel (i.e., the main fuel plus the pilot fuel). FIG. 2 indicates that, regardless of the proportion of the pilot fuel, the internal pressure fluctuation ratio is lower in the presence of a neutral fluid (the present invention) than in the absence of a neutral fluid (the~prior art). That is, FIG. 2 indicates less combustive vibration in the presence of a neutral fluid, demonstrating the effects of the present invention.
The present invention is not limited to the burner design illustrated in FIG. 1, but comprehends all combustors involving the formation of a circulating flow wherein a neutral fluid is fed between the circulating flow and the premixed gas. For example, the present invention can be applied to combustors having various flame-holding plates and combustors forming a circulating flow or a stagnation point in a region having an abruptly expanded flow path.
The present invention is not limited to the burner design illustrated in FIG. 1, but comprehends all combustors involving the formation of a circulating flow wherein a neutral fluid is fed between the circulating flow and the premixed gas. For example, the present invention can be applied to combustors having various flame-holding plates and combustors forming a circulating flow or a stagnation point in a region having an abruptly expanded flow path.
Claims (3)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A combustor, comprising:
a pilot nozzle arranged in the centre of said combustor and having the discharge end at a predetermined axial distance for injecting pilot fuel in a direction away from the longitudinal axis of said combustor and for generating a first layer of hot gas;
an intermediate nozzle arranged around said pilot nozzle and having the discharge end at same said axial distance for feeding a neutral fluid in said direction away from said longitudinal axis and for forming a mid-temperature second layer around said first layer; and a premixing nozzle arranged around said intermediate nozzle and having the discharge end at same said axial distance for injecting premixed gas in a direction parallel to said longitudinal axis and for forming a third layer of premixed gas around said second layer, the combustion of said premixed gas being controlled in a downstream region by the temperature of said second layer.
a pilot nozzle arranged in the centre of said combustor and having the discharge end at a predetermined axial distance for injecting pilot fuel in a direction away from the longitudinal axis of said combustor and for generating a first layer of hot gas;
an intermediate nozzle arranged around said pilot nozzle and having the discharge end at same said axial distance for feeding a neutral fluid in said direction away from said longitudinal axis and for forming a mid-temperature second layer around said first layer; and a premixing nozzle arranged around said intermediate nozzle and having the discharge end at same said axial distance for injecting premixed gas in a direction parallel to said longitudinal axis and for forming a third layer of premixed gas around said second layer, the combustion of said premixed gas being controlled in a downstream region by the temperature of said second layer.
2. The combustor of claim 1, further comprising a tip at said discharge end of said pilot nozzle for directing said neutral fluid between said third layer and said first layer.
3. A combustion method for burning premixed gas in a combustor, comprising the steps of:
forming a central layer of hot gas by injecting fuel in a direction away from the longitudinal axis of said combustor;
injecting premixed gas in a direction parallel to the longitudinal axis of said combustor for forming an exterior layer that is coaxial and about said central layer;
and feeding a neutral fluid between said central and said exterior layers in said direction away from the longitudinal axis of said combustor for forming a mid-temperature layer between said central and said exterior layers, the combustion of said premixed gas being controlled in a downstream region by the temperature of said mid-temperature layer.
forming a central layer of hot gas by injecting fuel in a direction away from the longitudinal axis of said combustor;
injecting premixed gas in a direction parallel to the longitudinal axis of said combustor for forming an exterior layer that is coaxial and about said central layer;
and feeding a neutral fluid between said central and said exterior layers in said direction away from the longitudinal axis of said combustor for forming a mid-temperature layer between said central and said exterior layers, the combustion of said premixed gas being controlled in a downstream region by the temperature of said mid-temperature layer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP72948/1993 | 1993-03-08 | ||
| JP07294893A JP3197103B2 (en) | 1993-03-08 | 1993-03-08 | Premixed air combustion method |
| PCT/JP1994/000363 WO1994020793A1 (en) | 1993-03-08 | 1994-03-08 | Premixed gas burning method and combustor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2134893A1 CA2134893A1 (en) | 1994-09-15 |
| CA2134893C true CA2134893C (en) | 1999-09-07 |
Family
ID=13504120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002134893A Expired - Fee Related CA2134893C (en) | 1993-03-08 | 1994-03-08 | Method and combustor for the combustion of a premixed gas |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0643267B1 (en) |
| JP (1) | JP3197103B2 (en) |
| CA (1) | CA2134893C (en) |
| DE (1) | DE69419679T2 (en) |
| WO (1) | WO1994020793A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63253147A (en) * | 1987-04-09 | 1988-10-20 | Nissan Motor Co Ltd | Idling engine speed control device for internal combustion engine |
| ATE170968T1 (en) * | 1995-07-20 | 1998-09-15 | Dvgw Ev | METHOD AND DEVICE FOR SUPPRESSING FLAME/PRESSURE VIBRATIONS DURING A FIRING |
| US5987875A (en) * | 1997-07-14 | 1999-11-23 | Siemens Westinghouse Power Corporation | Pilot nozzle steam injection for reduced NOx emissions, and method |
| JPH1183017A (en) * | 1997-09-08 | 1999-03-26 | Mitsubishi Heavy Ind Ltd | Combustor for gas turbine |
| CA2288555C (en) | 1998-11-12 | 2007-01-23 | Mitsubishi Heavy Industries, Ltd. | Gas turbine combustor |
| DE10000415A1 (en) | 2000-01-07 | 2001-09-06 | Alstom Power Schweiz Ag Baden | Method and device for suppressing flow vortices within a fluid power machine |
| JP2001254946A (en) | 2000-03-14 | 2001-09-21 | Mitsubishi Heavy Ind Ltd | Gas turbine combustor |
| JP2003028425A (en) * | 2001-07-17 | 2003-01-29 | Mitsubishi Heavy Ind Ltd | Pilot burner of premix combustor, premix combustor, and gas turbine |
| CN100590359C (en) * | 2004-03-03 | 2010-02-17 | 三菱重工业株式会社 | Combustor |
| JP2007162998A (en) | 2005-12-13 | 2007-06-28 | Kawasaki Heavy Ind Ltd | Fuel spraying device of gas turbine engine |
| JP4829315B2 (en) * | 2009-01-16 | 2011-12-07 | 川崎重工業株式会社 | Fuel spray system for gas turbine engine |
| JP6004976B2 (en) | 2013-03-21 | 2016-10-12 | 三菱重工業株式会社 | Combustor and gas turbine |
| US9781307B2 (en) | 2014-11-14 | 2017-10-03 | Sawgrass Technologies, Inc. | Networked digital imaging customization |
| US9302468B1 (en) | 2014-11-14 | 2016-04-05 | Ming Xu | Digital customizer system and method |
| CN105953219B (en) * | 2016-06-21 | 2018-01-16 | 上海齐耀热能工程有限公司 | Flameless combustion apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3724207A (en) * | 1971-08-05 | 1973-04-03 | Gen Motors Corp | Combustion apparatus |
| GB1427146A (en) * | 1972-09-07 | 1976-03-10 | Rolls Royce | Combustion apparatus for gas turbine engines |
| GB1429677A (en) * | 1973-03-20 | 1976-03-24 | Rolls Royce | Gas turbine engine combustion equipment |
| US4373325A (en) * | 1980-03-07 | 1983-02-15 | International Harvester Company | Combustors |
| JPS6122106A (en) * | 1984-07-10 | 1986-01-30 | Hitachi Ltd | Gas turbine conbustor |
| JPH01118023A (en) * | 1987-10-30 | 1989-05-10 | Hitachi Ltd | Gas turbine combustor |
| JPH04340020A (en) * | 1991-05-15 | 1992-11-26 | Mitsubishi Heavy Ind Ltd | Gas turbine combustor |
-
1993
- 1993-03-08 JP JP07294893A patent/JP3197103B2/en not_active Expired - Fee Related
-
1994
- 1994-03-08 WO PCT/JP1994/000363 patent/WO1994020793A1/en active IP Right Grant
- 1994-03-08 DE DE69419679T patent/DE69419679T2/en not_active Expired - Fee Related
- 1994-03-08 EP EP94908507A patent/EP0643267B1/en not_active Expired - Lifetime
- 1994-03-08 CA CA002134893A patent/CA2134893C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2134893A1 (en) | 1994-09-15 |
| WO1994020793A1 (en) | 1994-09-15 |
| EP0643267A1 (en) | 1995-03-15 |
| EP0643267B1 (en) | 1999-07-28 |
| DE69419679D1 (en) | 1999-09-02 |
| EP0643267A4 (en) | 1996-03-27 |
| JP3197103B2 (en) | 2001-08-13 |
| DE69419679T2 (en) | 2000-03-02 |
| JPH06257750A (en) | 1994-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2134893C (en) | Method and combustor for the combustion of a premixed gas | |
| RU2455569C1 (en) | Burner | |
| US7425127B2 (en) | Stagnation point reverse flow combustor | |
| JP3958767B2 (en) | Gas turbine combustor and ignition method thereof | |
| US5121597A (en) | Gas turbine combustor and methodd of operating the same | |
| US7363756B2 (en) | Method for combustion of a fuel | |
| US6705855B2 (en) | Low-NOx burner and combustion method of low-NOx burner | |
| CA2459986C (en) | Main burner, method and apparatus | |
| JP3012166B2 (en) | Gas turbine combustion system | |
| CA1066608A (en) | Fuel combustion apparatus | |
| JPS59129330A (en) | Premixed combustion type gas turbine | |
| US6718773B2 (en) | Method for igniting a thermal turbomachine | |
| JP3873119B2 (en) | In-cylinder swirl combustor | |
| JP3482718B2 (en) | Gas turbine combustor | |
| JP3272447B2 (en) | Burner for gas fuel | |
| JP2004028352A (en) | LOW NOx COMBUSTOR COMPRISING FUEL INJECTION VALVE FOR PREVENTING BACKFIRE AND SELF-IGNITION | |
| JP4524902B2 (en) | Low NOx combustor with premixed fuel injection valve | |
| JP4622100B2 (en) | Low NOx combustor for gas turbine | |
| JPH1130423A (en) | Low nox combustor for gas turbine | |
| JPS63210507A (en) | Burner | |
| JPH03260518A (en) | Gas turbine catalyst combustion system | |
| JPS6373005A (en) | Low nox fan heater | |
| JPH081281B2 (en) | Burner | |
| JPH04313608A (en) | Low-nox burner | |
| JPH04184007A (en) | Burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |