CN105002317A - Heat accumulating type burner for heating furnace - Google Patents
Heat accumulating type burner for heating furnace Download PDFInfo
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- CN105002317A CN105002317A CN201510496956.XA CN201510496956A CN105002317A CN 105002317 A CN105002317 A CN 105002317A CN 201510496956 A CN201510496956 A CN 201510496956A CN 105002317 A CN105002317 A CN 105002317A
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Abstract
The invention discloses a heat accumulating type burner for a heating furnace. The heat accumulating type burner comprises a burner block part, an air inlet unit, a thermal storage tank, a first flange arranged between the burner block part and the furnace wall, second flanges arranged on the two sides of the air inlet unit and a third flange arranged between the air inlet unit and an air pipeline, wherein the air inlet unit is arranged between the burner block part and the thermal storage tank; the burner block part comprises a burner block prepared from high temperature resistant and flushing resistant mullite castabale, and a metal shell part; during production, the two parts are poured to form an integral body; an air channel and a coal gas channel are combined on the separate burner block; the structure of the burner is the same as that of the conventional burner, namely, the inner ring is a coal gas nozzle, and the outer ring is an air nozzle, so that combustion is effectively implemented. According to the invention, the heat accumulating type burner is high in combustion efficiency, changeable and good in temperature uniformity, and solves a plurality of defects of the conventional heat accumulating type burner; the product quality is improved; the enterprise cost is reduced; the working condition of workers is improved.
Description
Technical field
The invention belongs to heating installation technical field, relate to a kind of process furnace, particularly relate to a kind of heat-accumulating burner for process furnace.
Background technology
Blast furnace gas is the byproduct that Steel Plant produce in iron manufacturing process, in blast furnace gas combustiblecomponents content only have ~ 30%, thermal value is low, the temperature of heating required for steel billet cannot be reached during direct use, can only be as used in combination in coke-oven gas with some high heating value gases, utilization ratio is low, and blast furnace gases a large amount of in iron and steel enterprise is discharged in air by the mode of directly lighting, not only waste mass energy, and severe contamination environment.
The eighties in 20th century, regenerative combustion technology starts to occur, by blast furnace gas accumulation of heat to 1000 DEG C, thus can reach the object utilizing blast furnace (BF) gas heating, due to its significant energy-saving effect with greatly reduce fuel cost, regenerative combustion technology is widely used very soon.
Heat-accumulating burner is the equipment of recuperative heater most critical, and the heat-accumulating burner (hereinafter referred to as " conventional rotary type regenerative burner ") be widely used now, exists shortcomings.As: there is no independently burner block 2 ', sky, coal gas are arranged apart, burner spout 4 ' and furnace wall 1 ' are an entirety, when must construct at the scene, formwork cast completes with masonry for furnace wall simultaneously (can consult Fig. 1, wherein mark 3 ' for air jet, 5 ' is furnace wall steel plate, and 6 ' is burner shell).In view of the limitation of site operation, can only be designed to more easy burner block spout pattern, even if like this, when constructing, jet size is also difficult to meet design requirement, and a fatal defects of this burner is exactly, and burner block cannot be repaired and change after damaging.Empty, coal gas sprays into careless and sloppy formula burning in burner hearth, and can say without flame profile, efficiency of combustion is low.
In addition, another shortcoming of conventional rotary type regenerative burner is exactly burner life-span low, maintenance difficult.Because burner shell and furnace wall steel plate directly weld together, furnace wall localized hyperthermia can cause the cracking of weld seam, be easy to cause high-temperature flue gas excessive and leak fiery phenomenon, welding portion must be cut during maintenance, not only destroy furnace wall steel plate, and maintenance duration, difficulty are large, this is also that recuperative heater is often by one of reason of denouncing.
In view of this, nowadays in the urgent need to designing a kind of new heat-accumulating burner, to overcome the above-mentioned defect of existing burner.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of heat-accumulating burner for process furnace, can improve efficiency of combustion, and is easy to change and maintenance.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of heat-accumulating burner for process furnace, described burner comprises: burner block part, air inlet unit, heat storage tank, the second flange being arranged at the first flange between burner block part and furnace wall, being arranged at air inlet unit both sides, be arranged at the three-flange between air inlet unit and air line; Air inlet unit is arranged between burner block part, heat storage tank;
Described burner block part comprises the burner block and metal casing portion that use the mullite pouring material of high temperature resistance and resistance to erosion to make; Two portions are cast in together when making, and air and gas flue are combined in one independently on burner block, and structure is the same with conventional burner, and inner ring is gas port, and outer ring is air jet, effectively organizes burning;
Installation the building by laying bricks or stones independent of furnace wall of described burner block part, namely when the resistance to material of furnace wall is poured into a mould, only need according to the physical dimension reserving hole of burner block, during installation, burner block outer ring parcel tapetum fibrosum, fills space, adopts Flange joint with furnace wall steel plate, trim brushing has the high-temp glue of high-temperature expansion property, ensures stopping property;
Because have employed independently burner block, burner block is previously baked shaping in a pre-installation, the outer ring parcel tapetum fibrosum of burner block during installation, directly do not contact with the resistance to material of furnace wall, burner block and furnace wall are independent separately, after baker, tapetum fibrosum and the resistance to material of furnace wall expand, between burner block and the resistance to material of furnace wall, form certain gap, when needing to change burner block, take the first flange be connected with furnace wall steel plate apart, just can extract burner block part out;
Coal gas adopts with shrinking, the oval spout of expanding channel, in this oval spout outer ring round several air jet, makes combustion flame shape be flats, and flats flame has more uniform temperature, feature that radiation efficiency is high; Meanwhile, ellipse ensures from structure the life-span that burner block is longer;
Independently the front and back end of air inlet unit is connected with burner block part and heat storage tank respectively by the second flange, and bottom is connected with air line by three-flange; The length of air inlet unit is greater than the length of burner block, only need take apart after joint flange upwards shifts out and can extract burner block part out; Air inlet unit inside adopts annular housing design, after air enters annular housing, is uniformly distributed, by the spout ejection in burner block;
Be provided with honeycomb and floater guide block in described heat storage tank, honeycomb all uses mullite material, has specific surface area large, and soon, drag losses is little, the feature that temperature efficiency is high, can by gas preheating to 1000 DEG C, recovery waste heat to greatest extent for accumulation of heat, exotherm rate; Floater guide block adopts high alumina brick, has resistant to elevated temperatures feature, effectively keeps out from the high temperature heat radiation in burner hearth, protection honeycomb;
Flue gas before burner and gas line are provided with three-way diverter valve, and commutate for coal gas when burning and accumulation of heat and flue gas, the flue gas arm before each burner is provided with hot resistance, and when measuring tempeature exceedes set(ting)value, reversing valve forced commutation, to protect honeycomb.
A kind of heat-accumulating burner for process furnace, described burner comprises: burner block part, air inlet unit, heat storage tank, the second flange being arranged at the first flange between burner block part and furnace wall, being arranged at air inlet unit both sides, be arranged at the three-flange between air inlet unit and air line; Air inlet unit is arranged between burner block part, heat storage tank;
Described burner block part comprises the burner block and metal casing portion that use the mullite pouring material of high temperature resistance and resistance to erosion to make; Two portions are cast in together when making, and air and gas flue are combined in one independently on burner block, and structure is the same with conventional burner, and inner ring is gas port, and outer ring is air jet, effectively organizes burning.
As a preferred embodiment of the present invention, installation the building by laying bricks or stones independent of furnace wall of described burner block part, namely when the resistance to material of furnace wall is poured into a mould, only need according to the physical dimension reserving hole of burner block, during installation, tapetum fibrosum is wrapped up in burner block outer ring, fill space, adopt the first Flange joint with furnace wall steel plate, trim brushing has the high-temp glue of high-temperature expansion property, ensures stopping property.
As a preferred embodiment of the present invention, coal gas adopts with " the oval spout of contraction, expanding channel ", outer round several air jet at this oval spout, make combustion flame shape be flats, flats flame has more uniform temperature, feature that radiation efficiency is high; Meanwhile, ellipse ensures from structure the life-span that burner block is longer.
As a preferred embodiment of the present invention, independently the front and back end of air inlet unit is connected with burner block part and heat storage tank respectively by the second flange, and bottom is connected with air line by three-flange; The length of air inlet unit is greater than the length of burner block, only need take apart after joint flange upwards shifts out and can extract burner block part out; Air inlet unit inside adopts annular housing design, after air enters annular housing, is uniformly distributed, by the spout ejection in burner block.
Be provided with honeycomb and floater guide block in described heat storage tank, honeycomb all uses mullite material, has specific surface area large, and soon, drag losses is little, the feature that temperature efficiency is high, can by gas preheating to 1000 DEG C, recovery waste heat to greatest extent for accumulation of heat, exotherm rate.Floater guide block adopts high alumina brick, has resistant to elevated temperatures feature, can effectively keep out from the high temperature heat radiation in burner hearth, protection honeycomb.
Flue gas before burner and gas line are provided with three-way diverter valve, and commutate for coal gas when burning and accumulation of heat and flue gas, the flue gas arm before each burner is provided with hot resistance, and when measuring tempeature exceedes set(ting)value, reversing valve forced commutation, to protect honeycomb.
Beneficial effect of the present invention is: the heat-accumulating burner for process furnace that the present invention proposes, heat-accumulating burner has with the same independent burner block of conventional burner, replaceable, efficiency of combustion is high, temperature homogeneity is good, solves many disadvantages of conventional rotary type regenerative burner, improves quality product, reduce enterprise cost, improve the labor condition of workman.
Heat-accumulating burner of the present invention has independent burner block, and structure is the same with conventional burner, easy for installation, can dismounting and change, and need not destroy masonry for furnace wall.The present invention is with gas inlet pipe, and air jet and gas port are combined on same burner block, and flame is organized, and efficiency of combustion is high.The flame profile of heat-accumulating burner of the present invention is flats, flame temperature evenly, radiation efficiency is higher, and NOx emission is lower, meanwhile, ensure that its long work-ing life.Change burner block without the need to mobile heat storage tank and cutting pipeline, after upwards removing air inlet unit, burner block part can be extracted out, compact construction, conveniently arrange and safeguard.
Accompanying drawing explanation
Fig. 1 is installation and the structural representation of conventional rotary type regenerative burner.
Fig. 2 is the structural representation of heat-accumulating burner of the present invention.
Fig. 3 is the burner block spout structure schematic diagram of heat-accumulating burner of the present invention
Fig. 4 is installation and the outside view one (vertical planning drawing) of heat-accumulating burner of the present invention.
Fig. 5 is installation and the outside view two (vertical view) of heat-accumulating burner of the present invention.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.
Embodiment one
Refer to Fig. 2 to Fig. 5, present invention is disclosed a kind of heat-accumulating burner for process furnace, described burner comprises: burner block part 1, air inlet unit 2, heat storage tank 3, the second flange 5 being arranged at the first flange 4 between burner block part 1 and furnace wall, being arranged at the both sides of air inlet unit 2, be arranged at the three-flange 6 between air inlet unit 2 and air line; Air inlet unit 2 is arranged between burner block part 1, heat storage tank 3.
Described burner block part 1 comprises the burner block 1.1 and metal casing portion 1.2 that use the mullite pouring material of high temperature resistance and resistance to erosion to make; Two portions are cast in together when making, and air and gas flue are combined in one independently on burner block, and structure is the same with conventional burner, and inner ring is gas port, and outer ring is air jet, effectively organizes burning.
Installation the building by laying bricks or stones independent of furnace wall of described burner block part 1, namely when the resistance to material of furnace wall is poured into a mould, only need according to the physical dimension reserving hole of burner block, during installation, burner block outer ring parcel tapetum fibrosum 7, fills space, adopts flange 4 to be connected with furnace wall steel plate, trim brushing has the high-temp glue of high-temperature expansion property, ensures stopping property.
Because have employed independently burner block, burner block is previously baked shaping in a pre-installation, the outer ring parcel tapetum fibrosum of burner block during installation, directly do not contact with the resistance to material of furnace wall, burner block and furnace wall are independent separately, after baker, tapetum fibrosum and the resistance to material of furnace wall expand, between burner block and the resistance to material of furnace wall, form certain gap, when needing to change burner block, take the first flange be connected with furnace wall steel plate apart, just can extract burner block part out.
Coal gas adopts with shrinking, the oval spout of expanding channel, in this oval spout outer ring round several air jet, makes combustion flame shape be flats, and flats flame has more uniform temperature, feature that radiation efficiency is high; Meanwhile, ellipse ensures from structure the life-span that burner block is longer.
Independently the front and back end of air inlet unit 2 is connected with burner block part and heat storage tank respectively by the second flange 5, and bottom is connected with air line by three-flange 6; The length of air inlet unit 2 is greater than the length of burner block, only need take apart after joint flange upwards shifts out and can extract burner block part 1 out; Air inlet unit 2 inside adopts annular housing 8 to design, and air is uniformly distributed after entering annular housing 8, by the spout ejection in burner block.
Embodiment two
The difference of the present embodiment and embodiment one is, in the present embodiment, honeycomb and floater guide block is provided with in described heat storage tank, honeycomb all uses mullite material, has specific surface area large, and accumulation of heat, exotherm rate are fast, drag losses is little, the feature that temperature efficiency is high, can by gas preheating to 1000 DEG C, recovery waste heat to greatest extent.Floater guide block adopts high alumina brick, has resistant to elevated temperatures feature, can effectively keep out from the high temperature heat radiation in burner hearth, protection honeycomb.
Flue gas before burner and gas line are provided with three-way diverter valve, and commutate for coal gas when burning and accumulation of heat and flue gas, the flue gas arm before each burner is provided with hot resistance, and when measuring tempeature exceedes set(ting)value, reversing valve forced commutation, to protect honeycomb.
In sum, the heat-accumulating burner for process furnace that the present invention proposes, heat-accumulating burner has with the same independent burner block of conventional burner, replaceable, efficiency of combustion is high, and temperature homogeneity is good, solve many disadvantages of conventional rotary type regenerative burner, improve quality product, reduce enterprise cost, improve the labor condition of workman.
Heat-accumulating burner of the present invention has independent burner block, and structure is the same with conventional burner, easy for installation, can dismounting and change, and need not destroy masonry for furnace wall.The present invention is with gas inlet pipe, and air jet and gas port are combined on same burner block, and flame is organized, and efficiency of combustion is high.The flame profile of heat-accumulating burner of the present invention is flats, flame temperature evenly, radiation efficiency is higher, and NOx emission is lower, meanwhile, ensure that its long work-ing life.Change burner block without the need to mobile heat storage tank and cutting pipeline, after upwards removing air inlet unit, burner block part can be extracted out, compact construction, conveniently arrange and safeguard.
Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments.Distortion and the change of embodiment disclosed are here possible, are known for the replacement of embodiment those those of ordinary skill in the art and the various parts of equivalence.Those skilled in the art are noted that when not departing from spirit of the present invention or essential characteristic, the present invention can in other forms, structure, layout, ratio, and to realize with other assembly, material and parts.When not departing from the scope of the invention and spirit, can other distortion be carried out here to disclosed embodiment and change.
Claims (7)
1. the heat-accumulating burner for process furnace, it is characterized in that, described burner comprises: burner block part (1), air inlet unit (2), heat storage tank (3), the second flange (5) being arranged at the first flange (4) between burner block part (1) and furnace wall, being arranged at air inlet unit (2) both sides, be arranged at the three-flange (6) between air inlet unit (2) and air line; Described air inlet unit (2) is arranged between burner block part (1), heat storage tank (3);
Described burner block part (1) comprises the burner block (1.1) and metal casing portion (1.2) that use the mullite pouring material of high temperature resistance and resistance to erosion to make, is cast in together when two portions make; Air and gas flue are combined in one independently on burner block (1.1), and inner ring is gas port, and outer ring is air jet, effectively organizes burning;
Installation the building by laying bricks or stones independent of furnace wall of described burner block part (1), namely when the resistance to material of furnace wall is poured into a mould, only need according to the physical dimension reserving hole of burner block, during installation, burner block outer ring parcel tapetum fibrosum (7), fills space, adopts the first flange (4) to be connected with furnace wall steel plate, trim brushing has the high-temp glue of high-temperature expansion property, ensures stopping property;
Adopt independently burner block, burner block is previously baked shaping in a pre-installation, the outer ring parcel tapetum fibrosum of burner block during installation, directly do not contact with the resistance to material of furnace wall, burner block and furnace wall are independent separately, after baker, tapetum fibrosum and the resistance to material of furnace wall expand, between burner block and the resistance to material of furnace wall, form certain gap, when needing to change burner block, take the first flange (4) be connected with furnace wall steel plate apart, just can extract burner block part out;
Coal gas adopts with shrinking, the oval spout of expanding channel, in this oval spout outer ring round several air jet, makes combustion flame shape be flats, and flats flame has more uniform temperature, feature that radiation efficiency is high; Meanwhile, ellipse ensures from structure the life-span that burner block is longer;
Independently the front and back end of air inlet unit (2) is connected with burner block part (1) and heat storage tank (3) respectively by the second flange (5), and bottom is connected with air line by three-flange (6); The length of air inlet unit (2) is greater than the length of burner block, only need take apart after joint flange upwards shifts out and can extract burner block part (1) out; Air inlet unit (2) inside adopts annular housing (8) design, and air is uniformly distributed after entering annular housing (8), by the spout ejection in burner block;
Described heat storage tank is provided with honeycomb and floater guide block in (3), and honeycomb all uses mullite material, has specific surface area large, soon, drag losses is little, the feature that temperature efficiency is high for accumulation of heat, exotherm rate, can by gas preheating to 1000 DEG C, recovery waste heat to greatest extent; Floater guide block adopts high alumina brick, has resistant to elevated temperatures feature, effectively keeps out from the high temperature heat radiation in burner hearth, protection honeycomb;
Flue gas before burner and gas line are provided with three-way diverter valve, and commutate for coal gas when burning and accumulation of heat and flue gas, the flue gas arm before each burner is provided with hot resistance, and when measuring tempeature exceedes set(ting)value, reversing valve forced commutation, to protect honeycomb.
2. the heat-accumulating burner for process furnace, it is characterized in that, described burner comprises: burner block part (1), air inlet unit (2), heat storage tank (3), the second flange (5) being arranged at the first flange (4) between burner block part (1) and furnace wall, being arranged at air inlet unit (2) both sides, be arranged at the three-flange (6) between air inlet unit (2) and air line; Air inlet unit (2) is arranged between burner block part (1), heat storage tank (3).
3. the heat-accumulating burner for process furnace according to claim 2, is characterized in that:
Described burner block part (1) comprises the burner block (1.1) and metal casing portion (1.2) that use the mullite pouring material of high temperature resistance and resistance to erosion to make; Two portions are cast in together when making, and air and gas flue are combined in one independently on burner block (1.1), and inner ring is gas port, and outer ring is air jet, effectively organizes burning.
4. the heat-accumulating burner for process furnace according to claim 2, is characterized in that:
Installation the building by laying bricks or stones independent of furnace wall of described burner block part (1), namely when the resistance to material of furnace wall is poured into a mould, only need according to the physical dimension reserving hole of burner block, during installation, burner block outer ring parcel tapetum fibrosum (7), fills space, adopts the first flange (4) to be connected with furnace wall steel plate, trim brushing has the high-temp glue of high-temperature expansion property, ensures stopping property;
Adopt independently burner block, burner block is previously baked shaping in a pre-installation, the outer ring parcel tapetum fibrosum of burner block during installation, directly do not contact with the resistance to material of furnace wall, burner block and furnace wall are independent separately, after baker, tapetum fibrosum and the resistance to material of furnace wall expand, between burner block and the resistance to material of furnace wall, form certain gap, when needing to change burner block, take the first flange (4) be connected with furnace wall steel plate apart, just can extract burner block part out.
5. the heat-accumulating burner for process furnace according to claim 2, is characterized in that:
Coal gas adopts with shrinking, the oval spout of expanding channel, in this oval spout outer ring round several air jet, makes combustion flame shape be flats, and flats flame has more uniform temperature, feature that radiation efficiency is high; Meanwhile, ellipse ensures from structure the life-span that burner block is longer.
6. the heat-accumulating burner for process furnace according to claim 2, is characterized in that:
Independently the front and back end of air inlet unit (2) is connected with burner block part (1) and heat storage tank (3) respectively by the second flange (5), and bottom is connected with air line by three-flange (6);
The length of air inlet unit (2) is greater than the length of burner block, only need take apart after joint flange upwards shifts out and can extract burner block part (1) out; Air inlet unit (2) inside adopts annular housing (8) design, and air is uniformly distributed after entering annular housing (8), by the spout ejection in burner block.
7. the heat-accumulating burner for process furnace according to claim 2, is characterized in that:
Described heat storage tank is provided with honeycomb and floater guide block in (3), and honeycomb all uses mullite material, has specific surface area large, soon, drag losses is little, the feature that temperature efficiency is high for accumulation of heat, exotherm rate, can by gas preheating to 1000 DEG C, recovery waste heat to greatest extent; Floater guide block adopts high alumina brick, has resistant to elevated temperatures feature, effectively keeps out from the high temperature heat radiation in burner hearth, protection honeycomb;
Flue gas before burner and gas line are provided with three-way diverter valve, and commutate for coal gas when burning and accumulation of heat and flue gas, the flue gas arm before each burner is provided with hot resistance, and when measuring tempeature exceedes set(ting)value, reversing valve forced commutation, to protect honeycomb.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510496956.XA CN105002317B (en) | 2015-08-13 | 2015-08-13 | Heat-accumulating burner for heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510496956.XA CN105002317B (en) | 2015-08-13 | 2015-08-13 | Heat-accumulating burner for heating furnace |
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| CN105002317A true CN105002317A (en) | 2015-10-28 |
| CN105002317B CN105002317B (en) | 2017-09-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440814A (en) * | 2016-09-13 | 2017-02-22 | 上海二十冶建设有限公司 | Method for fixing burner brick during protective removing of furnace wall of heating furnace |
| CN108330272A (en) * | 2018-01-19 | 2018-07-27 | 山东钢铁集团日照有限公司 | A kind of single Regeneratiue billet reheating furnace using blast furnace gas |
| CN109945192A (en) * | 2019-03-12 | 2019-06-28 | 贵州南方科技有限责任公司 | A kind of concentric jet air single regenerative burner of exotic fuels |
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| CN2934937Y (en) * | 2006-07-28 | 2007-08-15 | 江阴兴澄特种钢铁有限公司 | Honeycomb heat-storage burning nozzle |
| CN201225620Y (en) * | 2008-06-16 | 2009-04-22 | 武汉科虹工业炉有限公司 | Air single thermal storage combustor |
| CN101608793A (en) * | 2008-06-16 | 2009-12-23 | 武汉科虹工业炉有限公司 | Air and gas double heat accumulating type burner |
| CN202973099U (en) * | 2012-07-25 | 2013-06-05 | 斯坦因（上海）工业炉有限公司 | Wide flat flame heat accumulating type burner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2934937Y (en) * | 2006-07-28 | 2007-08-15 | 江阴兴澄特种钢铁有限公司 | Honeycomb heat-storage burning nozzle |
| CN201225620Y (en) * | 2008-06-16 | 2009-04-22 | 武汉科虹工业炉有限公司 | Air single thermal storage combustor |
| CN101608793A (en) * | 2008-06-16 | 2009-12-23 | 武汉科虹工业炉有限公司 | Air and gas double heat accumulating type burner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440814A (en) * | 2016-09-13 | 2017-02-22 | 上海二十冶建设有限公司 | Method for fixing burner brick during protective removing of furnace wall of heating furnace |
| CN106440814B (en) * | 2016-09-13 | 2018-09-18 | 上海二十冶建设有限公司 | The fixing means of burner block in a kind of heating furnace furnace wall protective demolition |
| CN108330272A (en) * | 2018-01-19 | 2018-07-27 | 山东钢铁集团日照有限公司 | A kind of single Regeneratiue billet reheating furnace using blast furnace gas |
| CN109945192A (en) * | 2019-03-12 | 2019-06-28 | 贵州南方科技有限责任公司 | A kind of concentric jet air single regenerative burner of exotic fuels |
| CN109945192B (en) * | 2019-03-12 | 2024-03-26 | 贵州南方科技有限责任公司 | High-calorific-value fuel concentric jet air single-heat-storage burner |
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| CN105002317B (en) | 2017-09-29 |
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