US3907488A - Method of burning fuels by means of a burner - Google Patents
Method of burning fuels by means of a burner Download PDFInfo
- Publication number
- US3907488A US3907488A US442679A US44267974A US3907488A US 3907488 A US3907488 A US 3907488A US 442679 A US442679 A US 442679A US 44267974 A US44267974 A US 44267974A US 3907488 A US3907488 A US 3907488A
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- fuel
- burner
- air
- combustion
- nozzles
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Classifications
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
- F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D23/00—Assemblies of two or more burners
Definitions
- ABSTRACT A method of burning a fuel by means of a burner which comprises premixing the fuel with air in an amount larger than the quantity theoretically required for the combustion of the fuel, allowing the resulting lean premixture to be issued from some of plural nozzles of the burner, while at the same time, premixing the fuel with air in an amount less than the theoretically required quantity, allowing the resulting rich premixture to be issued from the remaining nozzles. and burning the two gaseous premixtures together.
- FIG. 1 ippm) EXCESS AIR RATIO INSIDE BURNER NOX (p SOC EXCESS AIR RATIO INSIDE BURNER US Patent Sept. 23,1975 Sheet 2 of6 3,907,488
- This invention relates to a method of burning fuels by means of a burner, which can reduce the nitrogen oxide concentrations in the combustion gases.
- the invention concerns a method of burning gaseous fuels and light and heavy liquid fuels which comprises premixing, upstream of the burner, a fuel gas or vapor with air, with or without the addition of an inert gas or liquid in two different amounts, over and below the amount theoretically required for the combustion of the fuel, and burning the two premixtures to produce a so-called premix flame, thereby effecting combustion while remarkably reducing the concentrations of nitrogen oxides in the emissions and achieving a good thermal efficiency.
- NOx oxides of nitrogen
- the velocity of NOx production depends in large measure upon the flame temperature, or the higher the flame temperature, the faster NOx develop. it is therefore effective to decrease the flame temperature in order to reduce the NOX production as a result of combustion. This is well known in the art.
- Conventional burners are generally of so-called dif fused flame type whereby fuel gas and air for combustion are injected in a furnace by way of separate passages.
- Inert-gas mixing whereby an inert gas (e.g., com bustion gas) is added to the air for combustion.
- an inert gas e.g., com bustion gas
- FIG. 1 shows the relation between the excess air rate inside a burner (on the abscissa) and the NOx concentration in the combustion gas (on the ordinate) produced by the combustion of a gaseous fuel.
- FIGS. 2 and 3 show the results of experiments, respectively, with a light liquid fuel (kerosene) and a heavy liquid fuel (heavy oil).
- excess air rate inside a burner is used to mean the ratio of the amount of air that passes the throat of the burner (in the two-step combustion, such an amount minus the quantity of air blown in the latter period of combustion) to the amount of air theoretically required for the combustion.
- the broken-line curves in FIG. 1 represent the results of experiments conducted by using ordinary burners, with the ratio (hereinafter called GM) of the amount of an inert gas (combustion gas) introduced into air to the amount of the air for combustion increased from GM to GM;,. It will be seen from the graph that the NOx concentration of the combustion gas continues to increase gradually until the excess air rate inside the burner reaches about 1.2 but remains substantially constant beyond the value of the excess air rate.
- a plurality of burners are so set as to have irregular excess air rates and combustion is caused in some burner with a large excess of air (e.g., at din FIG. 1) and in the other with a small excess of air (e.g., at e in the same figure).
- the method is not appreciably useful because the effects of large and small excesses of air counteract and, as a whole, the resulting NOx concentration is such as arising from the combustion with a mean excess of air, e.g., atfin the figure.
- the present invention has for its object the provision of a method of burning fuels and a burner therefor which can eliminate the drawbacks of the afore described methods.
- a method of burning fuels and a burner therefor, which comprises effecting the combustion by discharging from some of plural nozzles of a burner a lean premixture consisting of air in an amount more than that theoretically required for the combustion and afuel (i.e., a gaseous, liquid, or evaporated or atomized liquid fuel) and by issuing from the remainder of the nozzles a rich premixture consisting of air in an amount less than the theoretically required quantity and the same fuel.
- afuel i.e., a gaseous, liquid, or evaporated or atomized liquid fuel
- the invention pertains to a method of burning fuels as defined above, wherein the gaseous fuel to be used is a gasified fuel obtained by thermally decomposing a heavy liquid fuel, mixing the decomposition product with an inert gas or liquid, and then cooling the mixture.
- the method of the invention is reduced to practice in the following way:
- the gaseous fuel and air in an amount more than that theoretically required for combustion are premixed upstream of a burner, and the premixed gas is jetted out from some of plural nozzles of the burner, while, at the same time, the gaseous fuel and air in an amount less than the theoretically required quantity are premixed, and the premixture is issued from the remainder of the burner nozzles to effect combustion.
- the method is practiced as follows: At least a part of the light liquid fuel is evaporated to a combustible gas or vapor, premixed with air in an amount more than the theoretically required quantity, with or without the addition of an inert gas or liquid, and the resulting gaseous premixture is issued from some of plural nozzles of a burner for combustion. At the same time, at least a part of the light liquid fuel is evaporated to a combustible gas or vapor, premixed with air in an amount less than the theoretically required quantity, with or without the addition of an inert gas or liquid, and the resulting gaseous premixture is burnt as it is discharged from the remainder of the burner nozzles.
- the method is further modified as follows: The fuel is thermally decomposed to a combustible gas or vapor, which is then diluted and cooled by the addition of an inert gas or liquid (e.g., water vapor), and a part of the resulting gas is premixed with air in an amount more than the theoretically required quantity, and then the premixture is issued for combustion out of some of plural nozzles of a burner. Simultaneously, the remainder of the diluted and cooled combustible gas or vapor is premixed with air in an amount less than the theoretically required quantity, and then the premixture is spouted from the remainder of burner nozzles for combustion.
- an inert gas or liquid e.g., water vapor
- the amount of air more than the quantity theoretically required for combustion is, in terms of the excess air rate (the amount of air actually'cbnsumed for combustion divided by the amount theoretically required for complete combustion'),pr e'ferably between 1.3 and 1.6, and the amount of air less than the theoretically required quantity is an excess air rate preferably between 0.5 and 0.8.
- the amount of air issued from all of the nozzles i .e., the sum of air introduced to support the combustion
- the amount of air issued from all of the nozzles is one to 1.2 times the amount of air theoretically required for the complete combustion of the fuel discharged from all of the nozzles.
- the use of the burner in conformity with the invention produces curves entirely different from those (represented by broken lines) conventionally obtained with an ordinary burner.
- the curvcs according to the invention are mountain. shaped with very sharp gradients, the peaks corresponding to excess air rates of approximately 1.0 to 1.1.
- the NOx concentration in the combustion gas will be rather high as compared with the values attained with conventional methods.
- the NOx concentration will markedly decrease and, from a certain boundary point on ward, drop below the values with the prior art methods; eventually the NOx concentration will be reduced to a minimum that is never attained conventionally.
- gaseous mixtures with varied fuel concentrations are supplied to different nozzles of a multi-nozzle burner, thus at taining ununiform excess air rates in the plural nozzles.
- the point a is the actuating point of a nozzle set for an excess air rate of more than 1.0
- the point b is that actuating point of a nozzle set for an excess air rate of less than 1.0.
- the both actuating points a and b give lower NOx concentrations than by the corresponding points in the conventional methods. Combining the points a and b brings an overall excess air rate inside the burner as at the point c. Thus, compared with an ordinary arrangement in which all burners are set to the point a, combustion with less excess air is made possible. It follows that a heat exchanger equipped with the burner incorporating the method of the invention can achieve a very high thermal efficiency.
- the nozzle actuated at the point b would produce a flame with insufficient air supply, or in a state of incomplete combustion.
- the condition can be improved, for example, by sandwiching a nozzle actuatable with an excess air rate at the point b with nozzles actuatable at the point a, or vice versa. In this manner the combustion incomplete at the point b will be made complete by the excess air at the point a.
- the air inside the burner may be mixed with an inert gas (e.g., the combustion gas) to shift the actuating point from a to a or a" and, likewise, shift the actuating point from b to b" or b". Accordingly, the average excess air rate throughout the burner will be shifted to the point 0' or c". This will make possible combustion with a smaller excess of air and with a higher thermal efficiency than when the combustion is conventionally carried out with all burners set to the point a or a". Moreover, the NOx concentration in the combustion gas will be practically reduced to naught.
- an inert gas e.g., the combustion gas
- the continuous lines 8 and C indicate the effects of an inert gas (combustion gas) introduced into air upon combustion of kerosene in accordance with the present invention.
- combustion gas combustion gas
- the air containing a small quantity (B) or a large quantity (C) of such inert gas is helpful in reducing the NOx concentration in the combustion gas discharged; the greater the addition of such inert gas to air, the lower the NOX concentration will be.
- the excess air rate in some of adjoining gas passages for example in the gas passages l6"a in FIG. 17 to be considered later, is large, for example at the point a in FIG. 3, while the rate in the other gas passages l6"b is small, for example at the point 19, then the overall excess air rate inside the burner and the NOx concentration in the combustion gas can be at the point c, for example.
- the excess air rate is smaller and the thermal efficiency is higher than when all the gas passages are set to the point a.
- incomplete combustion takes place in the gas passages 16"b due to shortages of air, the combustion is made completely by the excess air in the adjacent gas passages 16"u.
- the method and apparatus according to this invention are applicable to burners of boilers and other industrial furnaces as well as of gas turbines.
- FIGS. 1 to 3 are graphs showing the relations between excess air rates in burners and NOx concentrations in the combustion gases when gaseous, light liquid. and heavy liquid fuels are burnt, respectively;
- FIG. 4 is a front view of a burner for burning gaseous fuel to be used in the method of the invention
- FIG. 5 is a sectional view taken on the line V-V of FIG. 4;
- FIG. 6 is a front view of a conventional burner for burning light liquid fuel
- FIG. 7 is a sectional view taken on the line VIIVII of FIG. 6;
- FIG. 8 is a front view of a burner for burning light liquid fuel to be used in the method of the invention.
- FIG. 9 is a sectional view taken on the line IX-IX of FIG. 8;
- FIG. 10 is a front view of a modified burner for burning light liquid fuel to be used in the method of the invention.
- FIG. 11 is a sectional view taken on the line XIXI of FIG. 10;
- FIG. 12 is a sectional view taken on the line XII-XII of FIG. 11; i
- FIG. 13 is a longitudinal sectional view of a burner for burning heavy liquid fuel to be used in the method of the invention.
- FIG. 14 is a sectional view taken on the line XIV-XIV of FIG. 13; l
- FIG. 15 is a sectional view taken on the line XVXV of FIG. 13;
- FIG. 16 is a longitudinal sectional view of a modified burner for burning heavy liquid fuel to be used in the method of the invention.
- FIG. 17 is a cross sectional view of a further modified burner for burning heavy liquid fuel to be used in the method of the invention.
- FIGS. 4 and 5 The burner suited for the combustionof gaseous fuel in accordance with this invention is illustrated in FIGS. 4 and 5.
- the burner is made up of a plurality of nozzles 1, each of which consists of a fuel gas feed pipe 2a or 2/1, an air feed pipe 3 for supplying air with or without the addition of an inert gas (combustion gas), a premixing chamber 4 where air alone or air plus the inert gas is mixed with fuel gas. and a flame-stabilizing baffle 5.
- the fuel gas feed pipes 2a, 2b permit the flow of fuel at ununiform flow rates so that dissimilar excess air rates may be attained.
- FIGS. 8 through 12 The burner suited for the combustion of light liquid fuel, and its modified form, are shown in FIGS. 8 through 12.
- the burner is shown as comprising a plurality of nozzles 1', each of which consists of a fuel injection gun 2'a or 2'b, an air feed pipe 3' through which air for combustion or a mixture of air and an inert gas is admitted, and a flame-stabilizing baffle 4, and is communicated with a common fuel heater 5'.
- nozzles 1' each of which consists of a fuel injection gun 2'a or 2'b, an air feed pipe 3' through which air for combustion or a mixture of air and an inert gas is admitted, and a flame-stabilizing baffle 4, and is communicated with a common fuel heater 5'.
- an inert liquid e.g. water
- the fuel injection guns 2a, 2'b are so built as to discharge the fuel at different flow rates.
- FIGS. 6 and 7 show a typical combustor of a conventional design for burning light liquid fuel.
- FIGS. 13 through I7 The burner suited for the combustion of heavy liquid fuel, and its modified forms, are shown in FIGS. 13 through I7.
- the burner comprises a group of units, i.e., a premixer 21" for auxiliary fuel, a screen burner 2", and heavy oil burners 4 for spraying heavy oil through the agency of water vapor, a group of units, i.e., a burner cylinder 22" formed with a multiplicity of holes 13" through which the resulting hot gas is cooled by the combustion gas (recycled gas) and is premixed with excessair for combustion, a plurality of air intake plates 3.", and gas passages 16" defined thereby, and a starting oil burner 17".
- a group of units i.e., a premixer 21" for auxiliary fuel, a screen burner 2", and heavy oil burners 4 for spraying heavy oil through the agency of water vapor
- a group of units i.e., a burner cylinder 22" formed with a multiplicity of holes 13" through which the resulting hot gas is cooled by the combustion gas (recycled gas) and is premixed with excessair for combustion, a
- EXAMPLE 1 With an apparatus in F I68. 13 to 15, as gaseous fuel (e.g., LPG) 5 under pressure is premixed with air 6" for combustion, by means of a premixer 21", and the premixture is completely burnt by a screen burner 2" to form a hot gas 7" at about 2,000C.
- a number of heavy oil burners 4" for spraying heavy oil 9" with the aid of water vapor 8" are disposed around the hot gas 7", and by means of the burners 4 the hot gas 7" and the fine droplets of heavy oil 10 (in a mist form) are rapidly mixed up.
- mist of fine droplets 10" thus spraying by the oil burners 4" quickly evaporated and undergoes thermal decomposition upon mixing and contact with the hot combustion gas 7" and, through an aqueous gas reaction" with the water vapor present, forms a combustible gas containing some fine droplets.
- the combustible gas thus produced in the gasifying cylinder 1" which is still as hot as about 1,400C, is cooled by blowing and mixing therein the combustion gas (recycled gas) 11 from a furnace outlet not shown, through a multiplicity of holes 13" formed in a burner cylinder 22'. In this manner a combustible gas 14 at a relatively low temperature of about 500C is obtained.
- the recycled gas 11" so added lowers the temperature of the resulting gaseous mixture and thereby serves to preventunintended ignition and fire hazard in the burner in the next stage of the combustibles premixing with air, while controlling the flame temperature inside the burner at a low level.
- either excess or insufficient air 12" is blown into gas passages 16" through a multiplicity of air orifices formed in the burner cylinder 22", so that the gasified fuel 14" and air 12" are thoroughly premixed.
- the gaseous premixture of the gasified fuel, recycled gas, and air rapidly burns and forms a short premix flame 23".
- the air intake plates 3" deflect the stream of the gaseous premixture downward and impart swirl to the gas stream, thus effecting complete premixing of the gasified fuel and air and stabilizing the flame'from the starting oil burner 17" at the time of starting.
- the oil burner 17 has an oil line 18 which is secured to a furnace wall 19".
- Combustion in accordance with the present method of a thorough gaseous premixture of the gasified fuel, air, and recycled gas by a burner according to the invention forms a low-temperature premix flame with remarkably reduced NOx production.
- Example 2 EXAMPLE 3 The apparatus employed is the same as used in Example 1 excepting that the orifices 15" open in the gas passages 16"a differ in number or size of the both from those open in the adjacent passages 16"b so that the burner can produce gaseous premixtures with large and small excess air rates. Accordingly, the excess air rate in the gas passages 16"a is high, and the rate in the adjacent passages 16"b is small.
- a method of burning a fuel by means of a burner which comprises premixing the fuel with air in an amount larger than the quantity theoretically required for the combustion of the fuel, allowing the resulting lean premixture to be issued from some of plural nozzles of the burner, while at the same time, premixing the fuel with air in an amount less than the theoretically required quantity, allowing the resulting rich premixture to be issued from the remaining nozzles, and burning the two gaseous premixtures together wherein the two gaseous premixtures are separately mixed with an inert liquid by spraying before they are issued from the respective burner nozzles for combustion.
- a method of burning a fuel by means of a burner which comprises premixing the fuel with air in an amount larger than the quantity theoretically required for the combustion of the fuel, allowing the resulting lean premixture to be issued from some of plural nozzles of the burner, while at the same time premixing the fuel with air in an amount less than the theoretically required quantity, allowing the resulting rich premixture to be issued from the remaining nozzles, and burning the two gaseous premixtures together wherein the two gaseous premixtures are separately mixed with a recycled combustion gas before they are issued from the respective burner nozzles for combustion.
- a method of burning a fuel by means of a burner which comprises premixing the fuel with air in an amount larger than the quantity theoretically required for the combustion of the fuel, allowing the resulting lean premixture to be issued from some of plural nozzles of the burner, while at the same time, premixing the fuel with air in an amount less than the theoretically required quantity, allowing the resulting rich premixture to be issued from the remaining nozzles, and burning the two gaseous premixtures together
- the fuel is a gasified fuel prepared by thermally decomposing a heavy liquid fuel, adding an inert gas or liquid to the decomposed fuel, and cooling the mixture.
- a burner comprising gaseous or gasified fuel and air conduits, first premixing chambers for forming a fuel lean premixture consisting of the fuel and air in an amount larger than the quantity theoretically required for the combustion of the fuel, second premixing chambers for forming a fuel-rich premixture consisting of the fuel and air in an amount smaller than the theoretically required quantity, first nozzles for injecting the lean premixture, second nozzles for injecting the rich premixture, and conduits for an inert fluid means for discharging an inert fluid for mixing with the air to be used for the combustion.
- a burner as defined in claim 5 further comprising heating means for gasifying a light liquid fuel.
- a burner as defined in claim 7 wherein said means for cooling the resulting hot gas consists of a plurality of holes formed on the burner cylinder and conduit connected thereto through which the combustion gas is recycled.
- a burner as defined in claim 7 wherein said means for cooling the resulting hot gas consists of a feed water pipe provided with water spraying nozzles inside the gasifying cylinder.
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Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48022339A JPS49111235A (ja) | 1973-02-24 | 1973-02-24 |
Publications (1)
Publication Number | Publication Date |
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US3907488A true US3907488A (en) | 1975-09-23 |
Family
ID=12079927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US442679A Expired - Lifetime US3907488A (en) | 1973-02-24 | 1974-02-14 | Method of burning fuels by means of a burner |
Country Status (11)
Country | Link |
---|---|
US (1) | US3907488A (ja) |
JP (1) | JPS49111235A (ja) |
CA (1) | CA1027842A (ja) |
CH (1) | CH568526A5 (ja) |
DE (1) | DE2408635C3 (ja) |
ES (2) | ES423579A1 (ja) |
FR (1) | FR2219384B1 (ja) |
GB (1) | GB1445795A (ja) |
IT (1) | IT1015821B (ja) |
NL (1) | NL167510C (ja) |
SU (1) | SU596176A3 (ja) |
Cited By (16)
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US4095928A (en) * | 1977-02-14 | 1978-06-20 | Southern California Edison Company | Method of reducing nitrogen oxide emissions in flue gas |
US4153410A (en) * | 1976-12-07 | 1979-05-08 | Basf Aktiengesellschaft | Production of sulfur-free combustion gases of low soot content |
US4173118A (en) * | 1974-08-27 | 1979-11-06 | Mitsubishi Jukogyo Kabushiki Kaisha | Fuel combustion apparatus employing staged combustion |
US4242076A (en) * | 1978-01-03 | 1980-12-30 | Rawyler Ehrat Ernst | Process of combustion |
US4343605A (en) * | 1980-05-23 | 1982-08-10 | Browning Engineering Corporation | Method of dual fuel operation of an internal burner type ultra-high velocity flame jet apparatus |
US4439135A (en) * | 1979-06-29 | 1984-03-27 | Ruhrgas Aktiengesellschaft | Process for the operation of premixture burners and burner for carrying out the process |
US4496306A (en) * | 1978-06-09 | 1985-01-29 | Hitachi Shipbuilding & Engineering Co., Ltd. | Multi-stage combustion method for inhibiting formation of nitrogen oxides |
US4499890A (en) * | 1980-10-16 | 1985-02-19 | Nederlandse Industriele Maatschappij Nefit N.V. | Heater and a method of controlling the combustion in such a heater |
US4599100A (en) * | 1985-04-01 | 1986-07-08 | Ppg Industries, Inc. | Melting glass with port and melter burners for NOx control |
US4614491A (en) * | 1985-10-07 | 1986-09-30 | Welden David P | Multiple burner control apparatus |
DE4241883A1 (de) * | 1992-10-07 | 1994-06-16 | Selas Corp Of America Dresher | Mehrstufiger Brenner |
US5340305A (en) * | 1989-10-20 | 1994-08-23 | Joyce John V | Low NOx gas burner |
US6652265B2 (en) | 2000-12-06 | 2003-11-25 | North American Manufacturing Company | Burner apparatus and method |
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US20070221196A1 (en) * | 2005-12-13 | 2007-09-27 | Schwank Bernd H | Heating device and method for its operations |
US8703064B2 (en) | 2011-04-08 | 2014-04-22 | Wpt Llc | Hydrocabon cracking furnace with steam addition to lower mono-nitrogen oxide emissions |
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JPS5413610B2 (ja) * | 1973-12-05 | 1979-06-01 | ||
JPS5143235A (ja) * | 1974-10-09 | 1976-04-13 | Matsushita Electric Ind Co Ltd | Nenshosochi |
CA1066608A (en) * | 1974-11-18 | 1979-11-20 | Akito Komori | Fuel combustion apparatus |
JPS51106332U (ja) * | 1975-02-24 | 1976-08-25 | ||
JPS5825927B2 (ja) * | 1975-04-11 | 1983-05-31 | 川崎重工業株式会社 | オイルバ−ナ |
JPS51145931A (en) * | 1975-06-10 | 1976-12-15 | Hitachi Zosen Corp | Two stage combustion process for restraint of nox |
JPS5214228A (en) * | 1975-07-24 | 1977-02-03 | Osaka Gas Co Ltd | Conbustion system to restrain volume of emission of nitrogen oxide |
JPS5274930A (en) * | 1975-12-19 | 1977-06-23 | Hitachi Zosen Corp | Low-no# two-step combustion method by spraying water into combustion z one |
JPS52151941A (en) * | 1976-06-11 | 1977-12-16 | Osaka Gas Co Ltd | Nitrogen oxide generation control burner |
JPS5629521Y2 (ja) * | 1976-07-14 | 1981-07-14 | ||
SE413935B (sv) * | 1977-03-18 | 1980-06-30 | Aga Ab | Forfaringssett och anordning for tillsettning av syrgas vid forbrenning av brenslen |
JPS5950013B2 (ja) * | 1978-08-22 | 1984-12-06 | 茂盛 大谷 | バ−ナ−.ユニツトを組合せた二流体極大容量バ−ナ− |
GB2076135B (en) * | 1980-04-22 | 1984-04-18 | Mitsubishi Heavy Ind Ltd | Pulverized fuel firing apparatus |
FR2505983B1 (fr) * | 1981-05-13 | 1986-07-11 | Jean Lamy | Appareil deflecteur pour ameliorer la qualite de la combustion fournie par un bruleur, notamment pour une chaudiere ou analogue |
DE3826279C2 (de) * | 1987-08-04 | 1994-08-25 | Vaillant Joh Gmbh & Co | Gasbrenner mit einer Brennerkammer |
AT397569B (de) * | 1988-03-09 | 1994-05-25 | Vaillant Gmbh | Brenner |
GB8813237D0 (en) * | 1988-06-04 | 1988-07-06 | Hepworth Heating Ltd | Gas burners |
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JP2742150B2 (ja) * | 1991-05-31 | 1998-04-22 | 株式会社日立製作所 | 燃焼器および燃焼設備 |
AU3535593A (en) * | 1992-03-26 | 1993-09-30 | Boc Group, Inc., The | Method for combusting a fuel-oxidant mixture |
DE4408256A1 (de) * | 1994-03-11 | 1995-09-14 | Abb Management Ag | Verfahren und Vorrichtung zur Flammenstabilisation von Vormischbrennern |
DE4441641A1 (de) * | 1994-11-23 | 1996-05-30 | Abb Management Ag | Brennkammer mit Vormischbrennern |
DE19509219C2 (de) * | 1995-03-17 | 2003-07-24 | Ulrich Dreizler | Verfahren, bzw. Brennerkopf zum Verbrennen von Brenngas |
PL178691B1 (pl) * | 1996-02-23 | 2000-06-30 | Laziska Elektrownia | Sposób zmniejszania zawartości tlenków azotu w spalinach przemysłowego kotła i palnik do stosowania tego sposobu |
CN112361331B (zh) * | 2019-10-11 | 2022-04-29 | 中国石油大学(华东) | 一种具有高引射烟气的高原型燃油燃烧器及设计方法 |
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US3746498A (en) * | 1972-01-24 | 1973-07-17 | Combustion Eng | Reducing no{11 {11 emissions by additive injection |
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US3048131A (en) * | 1959-06-18 | 1962-08-07 | Babcock & Wilcox Co | Method for burning fuel |
AU3398071A (ja) * | 1970-09-30 | 1973-05-03 | Foster Wheeler Corp | |
CA1003718A (en) * | 1972-05-12 | 1977-01-18 | William C. Pfefferle | Method and furnace system for burning carbonaceous fuels |
-
1973
- 1973-02-24 JP JP48022339A patent/JPS49111235A/ja active Pending
-
1974
- 1974-02-14 US US442679A patent/US3907488A/en not_active Expired - Lifetime
- 1974-02-20 DE DE2408635A patent/DE2408635C3/de not_active Expired
- 1974-02-21 CH CH245674A patent/CH568526A5/xx not_active IP Right Cessation
- 1974-02-22 SU SU742001917A patent/SU596176A3/ru active
- 1974-02-22 CA CA193,299A patent/CA1027842A/en not_active Expired
- 1974-02-23 ES ES423579A patent/ES423579A1/es not_active Expired
- 1974-02-25 NL NL7402554.A patent/NL167510C/xx not_active IP Right Cessation
- 1974-02-25 GB GB843774A patent/GB1445795A/en not_active Expired
- 1974-02-25 IT IT48718/74A patent/IT1015821B/it active
- 1974-02-25 FR FR7406374A patent/FR2219384B1/fr not_active Expired
-
1976
- 1976-03-30 ES ES446488A patent/ES446488A1/es not_active Expired
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US3397256A (en) * | 1966-07-01 | 1968-08-13 | Baker Co J E | Combustion process and apparatus to increase a flame temperature |
US3746498A (en) * | 1972-01-24 | 1973-07-17 | Combustion Eng | Reducing no{11 {11 emissions by additive injection |
US3729285A (en) * | 1972-05-22 | 1973-04-24 | G Schwedersky | Burner and method of operating it to control the production of nitrogen oxides |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4173118A (en) * | 1974-08-27 | 1979-11-06 | Mitsubishi Jukogyo Kabushiki Kaisha | Fuel combustion apparatus employing staged combustion |
US4153410A (en) * | 1976-12-07 | 1979-05-08 | Basf Aktiengesellschaft | Production of sulfur-free combustion gases of low soot content |
US4095928A (en) * | 1977-02-14 | 1978-06-20 | Southern California Edison Company | Method of reducing nitrogen oxide emissions in flue gas |
US4242076A (en) * | 1978-01-03 | 1980-12-30 | Rawyler Ehrat Ernst | Process of combustion |
US4496306A (en) * | 1978-06-09 | 1985-01-29 | Hitachi Shipbuilding & Engineering Co., Ltd. | Multi-stage combustion method for inhibiting formation of nitrogen oxides |
US4439135A (en) * | 1979-06-29 | 1984-03-27 | Ruhrgas Aktiengesellschaft | Process for the operation of premixture burners and burner for carrying out the process |
US4343605A (en) * | 1980-05-23 | 1982-08-10 | Browning Engineering Corporation | Method of dual fuel operation of an internal burner type ultra-high velocity flame jet apparatus |
US4499890A (en) * | 1980-10-16 | 1985-02-19 | Nederlandse Industriele Maatschappij Nefit N.V. | Heater and a method of controlling the combustion in such a heater |
US4599100A (en) * | 1985-04-01 | 1986-07-08 | Ppg Industries, Inc. | Melting glass with port and melter burners for NOx control |
US4614491A (en) * | 1985-10-07 | 1986-09-30 | Welden David P | Multiple burner control apparatus |
US5340305A (en) * | 1989-10-20 | 1994-08-23 | Joyce John V | Low NOx gas burner |
DE4241883A1 (de) * | 1992-10-07 | 1994-06-16 | Selas Corp Of America Dresher | Mehrstufiger Brenner |
DE4241883C2 (de) * | 1992-10-07 | 2003-10-09 | Selas Corp Of America Dresher | Brenner für gasförmigen Brennstoff |
US6652265B2 (en) | 2000-12-06 | 2003-11-25 | North American Manufacturing Company | Burner apparatus and method |
US20050074711A1 (en) * | 2002-02-28 | 2005-04-07 | Cain Bruce E. | Burner apparatus |
US6929469B2 (en) | 2002-02-28 | 2005-08-16 | North American Manufacturing Company | Burner apparatus |
US20070221196A1 (en) * | 2005-12-13 | 2007-09-27 | Schwank Bernd H | Heating device and method for its operations |
US8475163B2 (en) * | 2005-12-13 | 2013-07-02 | Schwank Gmbh | Heating device and method for its operations |
US8703064B2 (en) | 2011-04-08 | 2014-04-22 | Wpt Llc | Hydrocabon cracking furnace with steam addition to lower mono-nitrogen oxide emissions |
Also Published As
Publication number | Publication date |
---|---|
CA1027842A (en) | 1978-03-14 |
GB1445795A (en) | 1976-08-11 |
DE2408635B2 (de) | 1981-08-13 |
NL167510B (nl) | 1981-07-16 |
FR2219384A1 (ja) | 1974-09-20 |
CH568526A5 (ja) | 1975-10-31 |
IT1015821B (it) | 1977-05-20 |
JPS49111235A (ja) | 1974-10-23 |
ES446488A1 (es) | 1977-06-16 |
DE2408635C3 (de) | 1982-04-15 |
NL7402554A (ja) | 1974-08-27 |
FR2219384B1 (ja) | 1976-10-08 |
NL167510C (nl) | 1981-12-16 |
DE2408635A1 (de) | 1974-09-19 |
SU596176A3 (ru) | 1978-02-28 |
ES423579A1 (es) | 1977-01-01 |
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