CN102818265B - Application of heat-accumulating high-temperature air burning method in burner and burning furnace - Google Patents
Application of heat-accumulating high-temperature air burning method in burner and burning furnace Download PDFInfo
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- CN102818265B CN102818265B CN201210323607.4A CN201210323607A CN102818265B CN 102818265 B CN102818265 B CN 102818265B CN 201210323607 A CN201210323607 A CN 201210323607A CN 102818265 B CN102818265 B CN 102818265B
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Abstract
The invention discloses application of a heat-accumulating high-temperature air burning method in a burner or a burning furnace. A honeycomb-shaped alloy net is installed on a straight-through pulverized coal burner. After fuel in a fuel tank is pumped out through a fuel pump, the fuel enters a fuel pipe through a fuel regulating valve, and fuel sprayed out of a fuel nozzle is ignited. Compressed air pressed out through an air compressor enters a primary air inlet channel, burning of the fuel is supported when the air is blown out, and flames of the burning fuel are sprayed out of a horn-shaped opening. Pulverized coal air flow is ignited by the fuel flames after blown out from slits positioned on the outer side of the horn-shaped opening. Air blown out through an air blower enters a secondary air inlet channel through an air door, and burning of pulverized coal is supported after the air is blown out. A flame detector is installed outside the honeycomb-shaped alloy net. A computer controller controls the air door according to supply quantity of the pulverized coal and signals of the flame detector, and accordingly quantity of air blown into the secondary air inlet channel is controlled. The vast majority of flames of the straight-through pulverized coal burner are covered inside the straight-through pulverized coal burner through the honeycomb-shaped alloy net, and only extremely small blue flames can emerge out of the honeycomb-shaped alloy net.
Description
Technical field:
The present invention relates to the application of a kind of heat accumulation high-temperature air burning method in burner or combustion furnace.
Background technology:
In traditional burner and combustion furnace, the burning of combustible is all unlimited, and burned flame upwards play forms towering flare.We know that the temperature of burned flame is higher, and the combustible near flame is more easily lighted; Combustible touches the air exceeding combustible ignition temperature, and combustible will be lighted; The higher combustible of air themperature is faster by the speed of lighting, and combustible is larger by the amount of lighting, flame is more prosperous.Although the burning of combustible can heat neighbouring air and unburned combustible, but lighter than the important air than outside after not supporting the nitrogen expanded by heating of combustible combustion in the carbon dioxide that combustible combustion produces, steam and air, so these flue gases have the buoyancy of rising to speed away flame take away the temperature that a large amount of heats reduces flame; Heat due to the part combustible generation of burning heats unburned part combustible makes it resolve into small molecule hydrocarbon, carbon particulate, combustible imperfect combustion can produce carbon monoxide again, these Small molecular combustibles also do not burn and are just taken away by the flue gas produced after combustible combustion, form blue or white smoke; Containing a large amount of carbon particulates in blue smog, except also containing a large amount of steam containing except carbon particulate in white smoke.Existing burner or boiler all can excessive air distributions, and the air capacity provided often will exceed combustible combustion required air quantity.Sometimes burner or combustion furnace need air distribution at twice.Such as: the wind of the small blower blowout in heavy oil combustion stove supports the primary combustion of heavy oil, and heavy oil primary combustion decomposites the combustibles such as a large amount of small molecule hydrocarbons, carbon monoxide and carbon particulate; Secondary air distribution misalignment heavy oil flame, but the Small molecular combustible that aligning heavy oil combustion decomposites, make these Small molecular combustibles become Thorough combustion; If use disposable Wind Volume air distribution, due to the little air that the burning velocity of heavy oil heat that is slow, release consumes less, the heat that the heavy oil flame that unnecessary air can take away burning produces, the heavy oil flame temperature of burning lower than heavy oil burning-point time, heavy oil flame will extinguish.The waste gas produced due to combustible combustion speeds away the flame of combustible combustion, and take away a large amount of heats and burned flame temperature is reduced, the Small molecular combustible causing a lot of former combustible to decomposite also unburned is just taken away by useless flue gas, forms the blue flue gas that gives up.So traditional burner and the burning of combustion furnace are all burn incompletelys, waste energy and pollute.Such as: the structure of the diesel range of hotel kitchen is, diesel pump is sprayed after the diesel oil draw out in diesel fuel tanks from the nozzle of burner by diesel oil control valve, when being placed into burner combustion, disregard message is lighted, the wind support that air blast is blown into burner sprays into diesel combustion in burner, formed z z z to make a sound the flare of upwards going here and there.The red flare that in diesel oil stove, diesel combustion produces is that a large amount of carbon particulate burns the flare formed; The blue flue gas that in diesel oil stove, diesel combustion produces is owing to containing a large amount of unburned carbon contained particulates in flue gas; The flue gas that in diesel oil stove, diesel combustion produces is choked people very much, is to go out owing to decompositing part small molecule hydrocarbon unburned retinue fume emission during diesel combustion; So diesel oil stove gives up flue gas will by smoke stack emission to high aerial.If diesel combustion is sufficient in diesel oil stove, we directly can heat the pot of cooking as gas-cooker with the flame that burning produces, the utilization ratio of the heat that diesel combustion produces can be higher, and do not pollute.The coal dust burn incompletely of the straight-through pulverized coal burner in boiler produces blue dense smoke, and in order to allow coal dust Thorough combustion, make up water steam in an air distribution; Although can allow coal dust Thorough combustion like this, reduce the temperature of pulverized coal flame, both reduced boiler temperature.Coal burn incompletely in chain coal burning stove can produce blue dense smoke equally, so the chain conveying of general chain-grate boiler is water-coal-slurry; Although these water allow the coal Thorough combustion on chain, reduce the temperature of coal burning flame on chain, both reduced boiler temperature.In ultra-supercritical coal-fired power generating units, the water temperature from boiler in seamless steel pipe is out more than 600 DEG C; This just requires that the temperature of coal-fired flame is very high, and the flue gas of boiler at least will more than 800 DEG C.So, in an air distribution, add steam or in coal, add water forming water-coal-slurry to allow the clean-burning way of coal, be not suitable for using in the boiler of ultra-supercritical coal-fired power generating units.
Summary of the invention:
The present invention can overcome the lower defect of insufficient and burner or combustion furnace the flame temperature of combustible combustion in conventional burners or combustion furnace.
The application of heat accumulation high-temperature air burning method of the present invention in burner or combustion furnace.Be contained on burner or combustion furnace with cellular alloy network, cellular infrared ceramic porcelain plate or foamed alloy plate.Outside cellular alloy network, cellular infrared ceramic porcelain plate or foamed alloy plate, flame detector is housed.Computer controller controls air blast according to the signal that the quantity delivered of combustible and flame detector provide and is blown into burner or burner air amount.In order to prevent disposable a large amount of air intake can cause the burner backfire of gas-cooker cause blast or in order to prevent disposable a large amount of air intake from causing the flare of oil burner, Oil fuel combustion stove and coal combustion furnace to be blown out, will carry out the air intake of secondary diverse location to burner or combustion furnace, the Small molecular combustible that the eddy current simultaneously produced makes former combustible decomposite fully mixes with air.When flare outside cellular alloy network, cellular infrared ceramic porcelain plate or foamed alloy plate is very high, flame detector sends signal to computer controller, computer controller increases last intake by controlling air door, and what allow the flare outside cellular alloy network, cellular infrared ceramic porcelain plate or foamed alloy plate fall is very low.Such combustible is major part burning in burner or combustion furnace, in burner or combustion furnace combustible there is no Thorough combustion and a small amount of carbon monoxide of producing being lighted through when cellular alloy network, cellular infrared ceramic porcelain plate or foamed alloy plate, formed shorter blue flare.Former combustible combustion in burner or combustion furnace, the Small molecular combustible that in burner for heating or combustion furnace, unburned former combustible and decomposes go out and the air entered in burner or combustion furnace, formed in burner or combustion furnace heat accumulation high temperature air support under high temperature combustible Thorough combustion.
Such as 1; Be contained on straight-through pulverized coal burner with cellular alloy network.Start fuel pump, fuel pump is drawn through fuel regulator valve the fuel oil in fuel tank and enters fuel pipe, is then lighted from the fuel oil of fuel nozzle ejection.Start air compressor machine, support the burning of the fuel oil from fuel nozzle ejection when the compressed air that air compressor machine extrudes enters an air intake passage blowout, the flame of oil inflame sprays from horn mouth.By fuel oil flame ignition after breeze airflow blows out from the gap outside horn mouth.The wind of air blast blowout enters secondary air passage by air door, out supports the burning of the carbon particulate that coal dust burn incompletely produces and carbon monoxide from secondary air passage afterwards.Outside cellular alloy network, flame detector is housed.The signal that computer controller provides according to the quantity delivered of coal dust and flame detector controls air door, thus control air blast is blown into the air capacity in the secondary air passage of straight-through pulverized coal burner; Make cellular alloy network cover in straight-through pulverized coal burner by most flare of straight-through pulverized coal burner, only have very short blue flare to emerge from cellular alloy network.
Such as 2: be contained on diesel fuel burner with cellular alloy network.Remove cellular alloy network, put into diesel fuel burner by after the ignited cotton watering diesel oil, then cellular alloy square is returned.Start diesel pump and send into fuel pipe by after the diesel oil draw out in diesel fuel tanks by fuel regulator valve, then light from the rear burned cotton flare of fuel nozzle ejection in diesel fuel burner.Start air blast, the wind of air blast blowout enters in an air intake passage through air door, then enters in diesel fuel burner the burning of the diesel oil supporting fuel nozzle ejection in diesel fuel burner.Regulate fuel regulator valve and air door, make cellular alloy network cover in diesel fuel burner by most flare of diesel fuel burner, only have very short blue flare to emerge from cellular alloy network.
Such as 3: be contained in top in chain coal combustion furnace with cellular alloy network, coal is transported in chain coal combustion furnace and lighted by chain, and air enters from an air intake passage coal blowing to chain and burn, and supports the burning of coal; The wind of air blast blowout enters secondary air passage through air door, supports the burning of the carbon particulate that coal burn incompletely produces and carbon monoxide from secondary air passage wind out from the side; Above cellular alloy network, flame detector is housed, the signal that computer controller provides according to the quantity delivered of coal and flame detector controls air door, thus control the air capacity that air blast is blown into chain coal combustion furnace secondary air passage, most flare of chain coal combustion furnace are covered in chain coal combustion furnace by cellular alloy network, only has very short blue flare to emerge from cellular alloy network.
Such as 4: be contained in top in fluid-bed combustion furnace with cellular alloy network, the coal on fluid bed is lighted, and air enters from an air intake passage, be then upward through the coal burning on fluid bed support fluid bed; The wind of air blast blowout enters secondary air passage through air door, and the coal flame side of then burning from fluid bed is blown into, and supports the carbon particulate of coal burn incompletely generation and the burning of carbon monoxide on fluid bed; Above cellular alloy network, flame detector is housed, the signal that computer controller provides according to the quantity delivered of coal and flame detector controls air door, thus control air capacity in secondary air passage that air blast is blown into fluid-bed combustion furnace, make cellular alloy network cover in fluid-bed combustion furnace by most flare of fluid-bed combustion furnace, only have very short blue flare to emerge from cellular alloy network; .
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, concrete detailed description is further done to the present invention.
Fig. 1 is the schematic diagram that the present invention applies in straight-through pulverized coal burner.
Fig. 2 is the outside drawing that the present invention applies in diesel fuel burner.
Fig. 3 is the schematic diagram that the present invention applies in chain coal combustion furnace.
Fig. 4 is the schematic diagram that the present invention applies in fluidized bed combustion coal incinerators.
Detailed description of the invention:
Experiment 1: be contained on straight-through pulverized coal burner 1 with cellular alloy network 12.Start fuel pump, fuel pump is drawn through fuel regulator valve the fuel oil in fuel tank and enters fuel pipe 15, is lighted from the fuel oil of fuel nozzle ejection.Start air compressor machine, the compressed air that air compressor machine extrudes enters the burning supporting the fuel oil from fuel nozzle ejection when an air intake passage 13 blows out, and the flame of oil inflame sprays from horn mouth.By fuel oil flame ignition after breeze airflow 16 blows out from the gap outside horn mouth.The wind of air blast blowout enters secondary air passage 14 by air door, out supports the burning of the carbon particulate that coal dust burn incompletely produces and carbon monoxide from secondary air passage 14 afterwards.Outside cellular alloy network 12, flame detector 11 is housed, the signal that computer controller provides according to the quantity delivered of coal dust and flame detector 11 controls air door, thus control air blast is blown into the air capacity in the secondary air passage 14 of straight-through pulverized coal burner 1; Most flare of straight-through pulverized coal burner 1 are covered in straight-through pulverized coal burner 1 by cellular alloy network 12, only has very short blue flare to emerge from cellular alloy network 12.After the coal dust firing that straight-through pulverized coal burner is 1 li is normal, brennschluss oil pump and closedown fuel regulator valve make fuel oil fray-out of flame; Then fuel pipe 15 is dropped back.In traditional straight-through pulverized coal burner 1, if load is reduced to 70%, namely by breeze airflow 16 amount reduction 30%, the flame in straight-through pulverized coal burner 1 extinguishes due to the reduction of coal dust firing temperature.And the straight-through pulverized coal burner of the present invention 1 employing storage combustion high-temperature air burning method is when being reduced to 70% by load, will reduce as long as turn the air capacity that air door enters in two subchannels 14 down, thus make coal dust still can normal combustion.Because the coal dust in straight-through pulverized coal burner 1 of the present invention can Thorough combustion, the heat of generation is also high, and the temperature of flue gas is very high, and blue smoke or black smoke can not be emitted to pollute.
Experiment 2: be contained on diesel fuel burner 2 with cellular alloy network 12, remove cellular alloy network 2, puts into diesel fuel burner 2 by after the ignited cotton watering diesel oil, is then covered back by cellular alloy network 12; Start diesel pump and send into fuel pipe 15 by after the diesel oil draw out in diesel fuel tanks by fuel regulator valve, then light from the rear burned cotton flare of fuel nozzle ejection in diesel fuel burner; Start air blast, the wind of air blast blowout enters in an air intake passage 13 through air door, then enters in diesel fuel burner the burning of the diesel oil supporting fuel nozzle ejection in diesel fuel burner 2; Regulate fuel regulator valve and air door, most flare of diesel fuel burner 2 are covered in diesel fuel burner 2 by cellular alloy network 12, only has very short blue flare to emerge from cellular alloy network 12.Like this we just can as use gas-cooker, cooking on the blue flare at the bottom of frying pan on cellular alloy network 12; Need not worry to burn at the bottom of black-cooking pot, also with chimney, the flue gas spray that the diesel oil that diesel fuel burner 2 burns produces need not be walked.
Experiment 3: be contained in top in chain coal combustion furnace 3 with cellular alloy network 12.Coal is transported in chain coal combustion furnace 3 and is lighted by chain 17, and air enters from an air intake passage 13 coal blowing to chain 17 and burn, and supports the burning of coal.The wind of air blast blowout enters secondary air passage 14 through air door, supports the burning of the carbon particulate that coal burn incompletely produces and carbon monoxide from secondary air passage wind out from the side.Above cellular alloy network 12, flame detector 11 is housed.The signal that computer controller provides according to the quantity delivered of coal and flame detector 11 controls air door, thus controls the air capacity that air blast is blown into chain coal combustion furnace 3 secondary air passage 14; Most flare of chain coal combustion furnace 3 are covered in chain coal combustion furnace 3 by cellular alloy network 12, only has very short blue flare to emerge from cellular alloy network 12.Due to the Thorough combustion of coal, the flue-gas temperature of generation is very high, can not emit blue smoke or smoke pollution environment; Unlike conventional chains coal combustion furnace 3, transport water-coal-slurry on chain 17, the flue-gas temperature that cool water mixture burning produces is very low.
Experiment 4: be contained in top in fluid-bed combustion furnace 4 with cellular alloy network 12.Coal on fluid bed 18 is lighted, and air enters from an air intake passage 13, is then upward through the coal burning that fluid bed 18 is supported on fluid bed 18.The wind of air blast blowout enters secondary air passage 14 through air door, and the coal flame side of then burning from fluid bed 18 is blown into, and supports the carbon particulate of coal burn incompletely generation and the burning of carbon monoxide on fluid bed 18.Above cellular alloy network 12, flame detector 11 is housed.The signal that computer controller provides according to the quantity delivered of coal and flame detector 11 controls air door, thus controls air capacity in secondary air passage 14 that air blast is blown into fluid-bed combustion furnace 4; Most flare of fluid-bed combustion furnace 4 are covered in fluid-bed combustion furnace 4 by cellular alloy network 12, only has very short blue flare to emerge from cellular alloy network 12.Because coal burning is very abundant, the flue-gas temperature of generation is very high, can not emit blue smoke or smoke pollution environment.
Claims (4)
1. the application of a heat accumulation high-temperature air burning method in burner or combustion furnace, it is characterized in that: be contained on burner or combustion furnace with cellular alloy network (12), cellular infrared ceramic porcelain plate or foamed alloy plate, outside cellular alloy network (12), cellular infrared ceramic porcelain plate or foamed alloy plate, flame detector (11) is housed, computer controller controls air blast according to the signal that the quantity delivered of combustible and flame detector (11) provide and is blown into burner or burner air amount; In order to prevent disposable a large amount of air intake can cause the burner backfire of gas-cooker cause blast or in order to prevent disposable a large amount of air intake from causing the flare of oil burner, Oil fuel combustion stove and coal combustion furnace to be blown out, will carry out the air intake of secondary diverse location to burner or combustion furnace, the Small molecular combustible that the eddy current simultaneously produced makes former combustible decomposite fully mixes with air; When flare outside cellular alloy network (12), cellular infrared ceramic porcelain plate or foamed alloy plate is very high, flame detector (11) sends signal to computer controller, computer controller increases last intake by controlling air door, and what allow the flare outside cellular alloy network (12), cellular infrared ceramic porcelain plate or foamed alloy plate fall is very low; Such combustible is major part burning in burner or combustion furnace, in burner or combustion furnace combustible there is no Thorough combustion and a small amount of carbon monoxide of producing being lighted through when cellular alloy network (12), cellular infrared ceramic porcelain plate or foamed alloy plate, formed shorter blue flare; Former combustible combustion in burner or combustion furnace, the Small molecular combustible that in burner for heating or combustion furnace, unburned former combustible and decomposes go out and the air entered in burner or combustion furnace, formed in burner or combustion furnace heat accumulation high temperature air support under high temperature combustible Thorough combustion.
2. the application of a heat accumulation high-temperature air burning method in burner or combustion furnace, it is characterized in that: be contained on straight-through pulverized coal burner (1) with cellular alloy network (12), start fuel pump, fuel pump is drawn through fuel regulator valve the fuel oil in fuel tank and enters fuel pipe (15), is lighted from the fuel oil of fuel nozzle ejection; Start air compressor machine, the compressed air that air compressor machine extrudes enters an air intake passage (13), and support the burning of the fuel oil from fuel nozzle ejection during blowout, the flame of oil inflame sprays from horn mouth; By fuel oil flame ignition after breeze airflow (16) blows out from the gap outside horn mouth; The wind of air blast blowout enters secondary air passage (14) by air door, out supports the burning of the carbon particulate that the burn incompletely of coal dust produces and carbon monoxide from secondary air passage (14) afterwards; Flame detector (11) is housed outside cellular alloy network (12), the signal that computer controller provides according to the quantity delivered of coal dust and flame detector (11) controls air door, thus control air blast is blown into the air capacity in the secondary air passage (14) of straight-through pulverized coal burner, most flare of straight-through pulverized coal burner (1) are covered in straight-through pulverized coal burner (1) by cellular alloy network (12), only has very short blue flare to emerge from cellular alloy network (12).
3. the application of a heat accumulation high-temperature air burning method in burner or combustion furnace, it is characterized in that: be contained in top in chain coal combustion furnace (3) with cellular alloy network (12), coal is transported in chain coal combustion furnace (3) and is lighted by chain (17), air enters from an air intake passage (13) coal blowing to chain (17) burning, supports the burning of coal; The wind of air blast blowout enters secondary air passage (14) through air door, supports the burning of the carbon particulate that coal burn incompletely produces and carbon monoxide from secondary air passage (14) wind out from the side; Flame detector (11) is equipped with in cellular alloy network (12) top, the signal that computer controller provides according to the quantity delivered of coal and flame detector (11) controls air door, thus control the air capacity that air blast is blown into the secondary air passage (14) of chain coal combustion furnace (3), most flare of chain coal combustion furnace (3) are covered in chain coal combustion furnace (3) by cellular alloy network (12), only has very short blue flare to emerge from cellular alloy network (12).
4. the application of a heat accumulation high-temperature air burning method in burner or combustion furnace, it is characterized in that: be contained in top in fluid-bed combustion furnace (4) with cellular alloy network (12), coal on fluid bed (18) is lighted, air enters from an air intake passage (13), is then upward through the coal burning on fluid bed (18) support fluid bed (18); The wind of air blast blowout enters secondary air passage (14) through air door, then be blown into from the coal flame side of fluid bed (18) burning, support the burning of the carbon particulate that the upper coal burn incompletely of fluid bed (18) produces and carbon monoxide; Flame detector (11) is equipped with in cellular alloy network (12) top, the signal that computer controller provides according to the quantity delivered of coal and flame detector (11) controls air door, thus control secondary air passage (14) the interior air capacity that air blast is blown into fluid-bed combustion furnace (4), most flare of fluid-bed combustion furnace (4) are covered in fluid-bed combustion furnace (4) by cellular alloy network (12), only has very short blue flare to emerge from cellular alloy network (12).
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| CN201210323607.4A CN102818265B (en) | 2012-08-25 | 2012-08-25 | Application of heat-accumulating high-temperature air burning method in burner and burning furnace |
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| CN201210323607.4A CN102818265B (en) | 2012-08-25 | 2012-08-25 | Application of heat-accumulating high-temperature air burning method in burner and burning furnace |
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| CN102818265B true CN102818265B (en) | 2014-12-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103471095B (en) * | 2013-09-09 | 2016-04-27 | 中南大学 | Biomass powder burner |
| CN109539561B (en) * | 2018-10-23 | 2020-11-10 | 山西大学 | Fuel oil type full-automatic air heater |
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| GB330198A (en) * | 1928-10-11 | 1930-06-05 | Richard Roosen | Improved burner for coal-dust furnaces |
| JPS60202218A (en) * | 1984-03-27 | 1985-10-12 | Matsushita Electric Ind Co Ltd | Combustion device |
| CN2426569Y (en) * | 2000-06-19 | 2001-04-11 | 南京斯奥欣电气具有限公司 | Burning cylinder for gas warmer |
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| CN102818265A (en) | 2012-12-12 |
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