CN1188872A - Double-end radiation tube burner system - Google Patents
Double-end radiation tube burner system Download PDFInfo
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- CN1188872A CN1188872A CN96103787A CN96103787A CN1188872A CN 1188872 A CN1188872 A CN 1188872A CN 96103787 A CN96103787 A CN 96103787A CN 96103787 A CN96103787 A CN 96103787A CN 1188872 A CN1188872 A CN 1188872A
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- 230000005855 radiation Effects 0.000 title claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 102
- 239000000446 fuel Substances 0.000 claims abstract description 74
- 239000002912 waste gas Substances 0.000 claims abstract description 40
- 239000007789 gas Substances 0.000 claims description 82
- 238000005338 heat storage Methods 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000011819 refractory material Substances 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
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- 230000015572 biosynthetic process Effects 0.000 description 5
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
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- 229910052760 oxygen Inorganic materials 0.000 description 4
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- 206010020843 Hyperthermia Diseases 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 230000036031 hyperthermia Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 210000000867 larynx Anatomy 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
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- 238000010438 heat treatment Methods 0.000 description 1
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Abstract
A burner system using U-shaped radiation tube whose both ends have burners, one for each end features that the surface temp of radiation tube is uniform while the heat transfer efficiency is increased even if the radiation tube is fine and long. The both burners installed to both ends of radiation tube play their role alternatively, so the waste gas after combustion and the air for combustion passes alternatively through heat accumulator to preheat the air for combustion. Part of waste gas returns back via circulating pipeline connected to two ends of radiation tube to burners. The high-temp waste gas, high-temp air for combustion and fuel are supplied to radiation tube at same time.
Description
The present invention relates to double-end radiation tube burner system, be specifically related to the radiation tube burner system that a kind of two ends that are positioned at the double-end radiation tube of homonymy at two ends dispose the radiant tube burner of the combustion air burning that makes the use high temperature that burnt gas and combustion air alternately obtain by heat storage.
Manufacturing experimently a kind of technology that will utilize sensible heat that heat storage reclaims burnt gas and be applicable to radiant tube burner with the heat-accumulation combustion that it carries out the high temperature preheating of combustion air in recent years.For example resemble as shown in Figure 4, system is installed in radiant tube burner 102A, 102B respectively at the two ends of double-end radiation tube 101 and makes their alternate combustion, and makes the burnt gas structure of gas larynx 103 exhausts that are in the burner in the burn-out state by offside again by radiant tube burner 101.In this system, the gas larynx 103 of each burner is connected with heat storage 104 respectively, is used as the path of supplying with combustion air during burning, and burning then is used as the exhaust channel of burnt gas when stopping.And in each heat storage 104, then burnt gas by the time its heat reclaimed, combustion air by the time then use the heat stored that combustion air is preheating to high temperature near burnt gas.
In this radiation tube burner system, the surface temperature homogenising of radiant tube is very important.Therefore, always be by improving the amount of exercise of combustion air on the one hand, scavenger fan being set on the other hand making flame and burning gases elongate and make heat stream distribution planarization burnt gas pressure discharge.
But consider the pressure loss problem of radiant tube and heat storage, the momental raising of combustion air etc. is limited, is difficult to the radiant tube surface temperature is carried out homogenising.Especially can not improve the amount of exercise of combustion air under the situation of thin diameter tube and long radiant tube because the pressure loss is big, the homogenising of radiant tube surface temperature is more difficult.Therefore, in radiation tube burner system, be difficult to realize thin diameter tube and long radiant tube.
And, because the amount of exercise of burning gases is little, to the heat transfer of radiant tube based on radiant heat transfer convection heat transfer' heat-transfer by convection seldom, so the overall heat transfer coefficient is very little, the thermal efficiency is very poor.
In addition, owing to when the radiation tube burner system that uses in the past, can produce local high-temperature region and the generating capacity of NOx is increased, and reduce flame temperature etc. and have to consider low NOxization because of sneaking into water vapour in the gas, therefore also uneconomical.
Even the object of the present invention is to provide a kind of double-end radiation tube that uses thin diameter or long size also can make the double-end radiation tube burner system of the compactness that heat transference efficiency improves uniformly simultaneously in the radiant tube surface temperature.In addition, the present invention also aims to reduce the generating capacity of NOx.
For achieving the above object, the present invention is with exist together at the pipe two ends two ends of double-end radiation tube of a side of burner configuration, a side the burner of when making this to the burner alternate combustion burnt gas never being burnt is discharged, and supplies with after making this burnt gas and combustion air alternately by heat storage combustion air is preheated to high temperature in the radiation tube burner system of previous combustion device and the waste gas circulation pipeline that is connected the radiant tube both ends is set and a part of burnt gas is circulated in radiant tube.
Therefore, the opposing party's burner side is strong negative pressure in this radiant tube burner because during side's burner combustion, and burning gases are by brute force introducing the opposing party burner side when combustion air and fuel reaction that high flow rate sprays form flame.And, part burnt gas is discharged outside radiant tube through heat storage from the burner of burn-out, a part of on the other hand burnt gas then is back to aflame burner side through the waste gas circulation pipeline, and the burnt gas of high temperature is supplied with radiant tube once more with the combustion air and the fuel of high temperature.The strong circulation of part burnt gas in radiant tube makes and comprises the amount of exercise increase of flame at interior burnt gas in the radiant tube, thereby realizes the homogenising of temperature in the radiant tube when generation localized hyperthermia district is suppressed.And make activeization of convective heat transfer and improve the thermal efficiency owing to when the surface temperature of radiant tube is carried out homogenising and improved the radiant tube average surface temperature, increasing the flowing gas amount.In addition, the circulation of a large amount of burnt gas can produce burnt gas to spraying the soakage of after-combustion with air, and forms very long flame and burning, gas flow when causing smoulder.
In addition, double-end radiation tube burner of the present invention is connected to combustion air jet upstream side by making the waste gas circulation pipeline, and utilizes the jeting effect of the injection energy of combustion air to flow in the radiant tube together.
In this case, through the waste gas circulation pipeline just be back to burnt gas at the high temperature of aflame burner side be injected into by utilization the combustion air in the radiant tube energy jeting effect and combustion air is ejected in the radiant tube jointly and produce strong circulation reliably.
In addition, near the jeting effect of the injection energy of double-end radiation tube burner of the present invention by making the waste gas circulation pipeline and be connected to the combustion air jet and utilize combustion air and flowing in the radiant tube together.
In this case, just being back to burnt gas at the high temperature of aflame burner side through the waste gas circulation pipeline is induced in the flowing of combustion air and is injected in the radiant tube jointly with combustion air and produces strong circulation reliably.
And, the present invention is in the double-end radiation tube burner system that adopts technique scheme, will be than fuel more speed spray combustion with nozzle and the nozzle for jetting fuel configured in parallel of air, and when with refractory material it being centered on, between the end face of the jet of the end face of the jet that forms fuel nozzle and formation air nozzle, step is set and makes the end face of above-mentioned fuel nozzle side protrude from the end face of air nozzle side.
In this case, step part produces negative pressure and induces the burnt gas of high temperature from waste gas circulation pipeline brute force, its part sucks with fuel gas and mixes preceding combustion air when making it to be ejected in the radiant tube, and the oxygen concentration of combustion air is reduced.Fuel is induced and follow and be mixed in the flowing of combustion air and spray the end face downstream at fuel.On the other hand, the a part of combustion air moving along the combustion air ejection end face and the surface current of the step part of fuel ejection end face stably forms and the mobile rightabout eddy current of combustion air near by the step of fuel ejection end face, after sneaking into a part of fuel, form flame as kindling material.One side causes stable smoulder for this reason, one side at a high speed the high temperature of ejection combustion air be induced into wherein fuel and the burnt gas Forced Mixing after form and have very jumbo flame and burning gases stream.
The double-end radiation tube burner system of the present invention's first technical scheme since the burner of a part of burnt gas from burning stops outside heat storage is discharged radiant tube, on the other hand, part burnt gas is back to just in aflame burner side through the waste gas circulation pipeline, the burnt gas of high temperature is supplied with in radiant tube again with the combustion air and the fuel of high temperature, thereby the amount of exercise that comprises flame burning gas in the radiant tube is increased, and when generation localized hyperthermia district is suppressed, realize the homogenising of temperature in the radiant tube.And make activeization of convective heat transfer owing to when the surface temperature of radiant tube is carried out homogenising and improved the radiant tube average surface temperature, increasing the flowing gas amount, improve the thermal efficiency.In addition, the circulation of a large amount of burnt gas can produce burnt gas to the soakage of injection after-combustion with air, and forms flowing of very long flame and burning gases when causing smoulder.Consequently compare to have reduced and do required fuel of identical work and the corresponding specific fuel consumption that improved with double-end radiation tube in the past.In addition, the practicability of the double-end radiation tube of impossible in the past thin diameter, long size also becomes possibility.And, because the uniformization effect of radiant tube surface temperature can make the radiant tube life-span prolong and lower cost for materialization.In the material cost of guaranteeing to reduce under the situation of same tube life-span radiant tube.
The present invention's the 2nd technical scheme be characterised in that through the waste gas circulation pipeline be back to the burner side high temperature the energy of burnt gas by utilizing the combustion air in radiant tube, spray jeting effect and be injected in the radiant tube jointly with combustion air and cause strong circulation reliably.
The present invention's the 3rd technical scheme is characterised in that, just is back to burnt gas at the high temperature of aflame burner side through the waste gas circulation pipeline and is induced in the flowing of combustion air and is injected in the radiant tube jointly with combustion air and causes strong circulation reliably.
The present invention's the 4th technical scheme is characterised in that, near the combustion air ejection step part produces negative pressure and attracts the burnt gas of high temperature to make its one side mix one with combustion air from waste gas circulation pipeline brute force and sprays in radiant tube, in addition, because a part of combustion air stably forms near the fuel ejiction opening and the mobile rightabout eddy current of combustion air, and sneak into the flame that forms behind a part of fuel as kindling material, combustion air with fuel mix before one side waste gas fully sucked and produce stable and burning slowly, one side forms very big flame of amount of exercise and burning gases stream.Therefore can be with uniform heat flux in the radiant tube internal combustion, prevent the local heat that produces in the burner in the past, life-span that can service life of radiant tubes.And suck the generation that the smoulder that produces can suppress NOx because of a large amount of burnt gas.
The accompanying drawing simple declaration:
Fig. 1 is the summary pie graph of expression double-end radiation tube burner system one embodiment of the present invention.
Fig. 2 is the profile of burner part concrete structure in the presentation graphs 1.
Fig. 3 is the summary section of another buner system of expression embodiment.
Fig. 4 is the skeleton diagram of the double-end radiation tube burner system in the past of suitable heat-accumulation combustion.
Below illustrated embodiment describes formation of the present invention in detail with reference to the accompanying drawings.
Fig. 1 represents an embodiment of double-end radiation tube burner system of the present invention.This double-end radiation tube burner system comprise two ends be positioned at the double-end radiation tube 1 of homonymy, be configured in this radiant tube 1 both ends a pair of radiant tube burner 2A, 2B and unify for the flow passage selector device 5 that makes this cross valve that burner 2A, 2B alternate combustion are switched selectively to combustion air feed system 3 and gas extraction system 4 etc. and not shown fuel supply system and it to be connected to selectively the flow passage selector device of burner 2A, 2B.The relation of two burner 2A, 2B is that a side is connected to 3 the opposing party of combustion air feed system and is connected to gas extraction system 4.
Double-end radiation tube 1 is the U-shaped pipe in the present embodiment, but not limit by it.The two ends of this radiant tube 1 are passed furnace wall (omitting among the figure) usually and are configured in outside the stove.The fixing means of radiant tube 1 on the furnace wall, for example can take will be contained in refractory material system interlayer (post) on the radiant tube embed on the furnace wall the diameter of opening greater than the hole of radiant tube, then by sealing with the gap of refractory material to this interlayer and tweer.
Each radiant tube burner 2A, 2B are the form of interior dress heat storage 6 in the present embodiment, are to be made up of fuel nozzle 7, air nozzle 8, fuel nozzle supporting mass 9 and the burner body 10 etc. of double as pilot burner.Also have, each radiant tube burner 2A, 2B of being configured in radiant tube 1 two ends adopt same structure usually, but according to circumstances also can adopt different structure.
In addition, internal circulating load control valve 15 is housed in waste gas circulation pipeline 12, the combustion air that burnt gas causes and the thin rate of burning gases can be regulated, for example suppress the waste gas circulation amount and pay attention to flame holding during the low temperature by combustion instability such as when stove is started working, and when the high temperature of stove operate as normal, increase the waste gas circulation amount, can realize homogenising, raising radiant tube surface loading and the further high efficiency of radiant tube surface temperature.
Though each heat storage 6,6 is not particularly limited, preferably adopt ceramic honeycomb long-pending identical as passage sections and that the stream straight line connects, resemble cordierite, mullite etc.This ceramic honeycomb thermal capacity is big, durability is high, the pressure loss is lower.And exhaust and air feed hocket without a break.Therefore the grit in the waste gas etc. is difficult to stick in the cellular stream of heat storage 6,6, even adhere to also because of not removed by inverted draft and can staiing.Even and waste gas is reduced to below the condensation point temperature also and can captures Sulfur composition and the chemical change material thereof in the waste gas and make the pipeline etc. of the gas extraction system in downstream not produce cold end corrosion at ceramic surface when reclaiming heat from waste gas.
Also have, the housing 11,11 that is connected with each burner 2A, 2B is connected to respectively on the revolution cross valve 5 by pipeline 14,14.
As burner noz(zle) 7, be to be also used as pilot burner in the present embodiment.As shown in Figure 2, the nozzle 7 of this double as pilot burner by fuel nozzle 7a, primary air pipe arrangement 7b that primary air flows and not shown ignition plug etc. are formed.Fuel nozzle 7a and primary air pipe arrangement 7b are made up of the sleeve pipe that is configured to concentric circles.Therefore jet pipe is simple in structure, can more carefully be shaped.According to the nozzle 7 of this double as pilot burner, flowing in the primary air pipe arrangement 7b around the fuel nozzle 7a has about 10% the primary air that flows to the combustion air of air nozzle 8 as auxiliary air.At the fore-end of fuel nozzle 7a except the main jet loophole, towards around primary air pipe arrangement 7b have the jet (omitting among the figure) that sprays a part of fuel so that with a part of fuel as pilot fuel injection in primary air pipe arrangement 7b and with obtain premixed gas after primary air mixes well.The bottom is provided with not shown igniter, and can form the flame stabilization source around the jet of fuel nozzle 7b.
Here, flow all the time among the primary air pipe arrangement 7b and have and the primary air that meets the necessary minimum amount of pilot combustion that the burner actuator state is irrelevant.Be to use not cold air as primary air by heat storage.This primary air determines air ratio with the combustion air addition of the high temperature of supplying with as auxiliary air.In addition, the mobile all the time fuel that also can keep the quantity sufficient of pilot flame when burning stops that has as pilot fuel among the fuel nozzle 7a is so that continue main burning and pilot combustion.
The nozzle 7 of this double as pilot burner and air nozzle 8 are configured in the substantial middle place of burner body 10 and are inserted in the radiant tube 3.Therefore, the second-time burning that is preheating to high temperature is flowed around the nozzle 11 of double as pilot burner with air, and burnt gas is in its flows outside.The front end of the nozzle 7 of double as pilot burner is bearing on the air nozzle 8 by nozzle supporting mass 9.
More than the buner system of Zu Chenging burns according to following manner and makes the radiant tube heating.
Among Fig. 1, burner 2A burns, and reacts with the combustion air of high flow rate ejection and fuel and forms flame from burner 2A.At this moment, because the burner 2B side of double-end radiation tube 1 other end is connected to gas extraction system 4 and becomes very strong negative pressure by cross valve 5, and burnt gas is forced to introduce burner 2B side.A part of burnt gas then is imported in the housing 11 by air nozzle, by heat storage 6 after pipeline 14 and cross valve 5 drain into gas extraction system 4 and after certain exhaust-gas treatment, putting to atmosphere.In addition, a part of burnt gas just is back in aflame burner 2A side through waste gas circulation pipeline 12, is supplied to once more with combustion air that is preheating to high temperature and fuel still to be in the radiation of high temperature pipe 1.Be that jeting effect that the injection energy by the combustion air that sprays in radiant tube 1 produces attracts burnt gas and mixes with combustion air under the situation of present embodiment.Here, the air as air injection reaction is preheating to as importing air nozzle 7 behind the high temperature more than 800 ℃ by heat storage 6.For this reason, auxiliary air expands and increases its flow velocity, from the air injection reaction mouth intensity of a fire fiercely, for example with the speed ejection of 100 meter per seconds, form at a high speed air stream in the central authorities of radiant tube 1.Therefore around the jet of air nozzle 8, produce negative pressure and induce, and in radiant tube 1, spray with combustion-air flow from 12 pairs of burnt gas of waste gas circulation pipeline.The burnt gas one side is sneaked into combustion air and is simultaneously flowed, and fuel and combustion air then extend promptly so-called smoulder in the burning slowly in radiant tube under fully being mixed with the burnt gas state.Burnt gas is then followed the combustion air of high flow rate, produces smoulder by the large amount of exercise that fully is mixed with burnt gas, the combustion air and the fuel of low oxygen concentration thereafter.Therefore also just significantly reduced the generating capacity of NOx.In addition, under the situation of the combustion air that adopts high temperature, the flame holding height is certain, can form very strong flame of directionality and burning gases stream because one side suppresses the generation one side of NOx, so can be with uniform heat flow burning in the broad space.And the strong circulation of a part of burnt gas in radiant tube 1 increases the amount of exercise that comprises flame burning gas in the radiant tube 1, and realizes the homogenising of temperature in the radiant tube when suppressing to produce the localized hyperthermia district.Make radiant tube surface temperature homogenising and can improve the radiant tube average surface temperature, thereby the heat transfer load of radiant tube unit are is significantly improved.Owing to the increase of flowing gas amount makes activeization of convective heat transfer and improves the thermal efficiency.In addition, the circulation of a large amount of burnt gas causes that burnt gas to spraying after-combustion with the sneaking in a large number of air, forms the mobile of very long flame and burning gases when producing smoulder.
Here, consider the homogenising of the thermal efficiency and radiant tube surface temperature, the switching of burner 2A and burner 2B is preferably carried out at short notice.For example after taking fire, burner 1A promptly stops the fuel of burner 2A side is supplied with second through 20-40.Cross valve 5 switches to burner 2A side is connected to gas extraction system 4 and burner 2B side is connected to combustion air feed system 3 then, and burner 2B is taken a breath.The fuel feed system of this afterburner 2B side is opened and is supplied with main fuel to burner 2B side.
Fig. 3 represents another embodiment.This embodiment is connected near the combustion air jet waste gas circulation pipeline 12 and the burnt gas of circulation is directly injected in the flowing of combustion air and sneaks in the radiant tube together.In this embodiment, burner 20 will be than the nozzle 21 and nozzle for jetting fuel 22 configured in parallel of fuel more speed spray combustion with air, and 24 of end faces at the end face 25 of the jet 27 that forms fuel nozzle 22 and the jet 26 of formation air nozzle 21 are provided with step when with refractory material piece 23 it being centered on, and make the end face 25 of fuel nozzle 22 sides protrude from the end face 24 of air nozzle 21 sides.Waste gas circulation pipeline 12 be set at air nozzle 21 jet 26 near.As shown in the figure, being shaped as of the coupling part of waste gas circulation pipeline 12 and burner 20 is circular-arc, and combustion air flows with respect to waste gas circulation pipeline 12 configuration that is oriented in a tangential direction, and waste gas is mobile along combustion air.
Air nozzle 21 and fuel (gas) nozzle 22 is configured to pass refractory material piece 23 and has the jet 26,27 of each nozzle on two end face 24,25 of the step of refractory material piece 23.Here, fuel nozzle 22 adopts with the nozzle of the same double as pilot burner of Fig. 1 embodiment and flows about about 10% the primary air of the auxiliary air with fuel nozzle 22 parallel injections as primary air.
In addition, fuel injection orifice 27 does not form on same plane with air jet 26, and is set on the not coplanar as step, and fuel injection orifice 27 is configured in the downstream of air jet 26.That is to say that fuel ejiction opening 27 is to be set on the end face (to call the flame stabilization face in the following text) 25 that protrudes from the end face (to call datum level in the following text) 24 of the refractory material piece that is provided with air jet 26.Stable flame 32 and fuel F are from fuel ejiction opening 27 ejections of this flame stabilization face 25.Fuel then sprays at a high speed from the central authorities of refractory material piece 23 with air.Can formation stably mix formation flame stabilization zone rapidly with the eddy current 31 of the flowing opposite direction of combustion air and with a part of fuel, gas this moment near the step part of flame stabilization face 25.Therefore, when not saying high temperature, even also can form the stable kindling material that does not go out that blows during low temperature.Under the situation of present embodiment, the refractory material piece 23 of configured in parallel and support air nozzle 21 and fuel nozzle 22 is to constitute by integrally formed single, but is used in combination after also can be according to circumstances the supporting part of the supporting part of air nozzle 21 and fuel nozzle 22 being formed separately.In addition under the situation of present embodiment, air nozzle 21 is not to adopt pipeline to constitute, but by the hole of opening on the refractory material piece 23 and in refractory material piece 23 is housed burner body constitute.Certainly, air nozzle 21 also can be made of pipeline.
And, adopting under the situation of above structure, refractory material piece 23 because of the problem on the intensity in air nozzle 21 and 22 distances that must have to a certain degree of fuel nozzle.Zone after injection exists fuel to be difficult to be induced into tendency in the high-speed air flow for this reason.Therefore preferably as shown in the figure the shape of jet 27 by the part 29 of air nozzle 21 made towards the curve form of air nozzle 21 sides.Like this, fuel just flows to the flow side of combustion air easily.Therefore, further raising can prevent free generation of not firing composition such as CO and HC with the ability of mixing of fuel.In addition, also can guarantee to supply with, can form more stable kindling material to the fuel of the eddy current 31 of the flowing opposite direction of combustion air.Then be not limited to curved surface as for its shape, all structures that satisfies above-mentioned functions all can, for example also can be the inclined-plane.
In addition, air nozzle 21 is set at the step part on the border of flame stabilization face 25 and datum level 24.And follow the function of mixing having with fuel by the part of flame stabilization face 25, then have the function that makes waste gas recirculation in part by datum level 24.That is to say, when the jet 26 that is configured to the central cross cut of jet 24 and air nozzle 21 at the face 28 with flame stabilization face 25 and the step part of datum level 24 is split state, follow mixed function and recirculation function to take into account.On the other hand, when the external shapes configuration of the jet 24 of the face 28 of not shown step part and air nozzle 21, suck enlarged areas, thereby the function aspects that the oxygen concentration of combustion air is reduced is good owing to compare waste gas with the situation of splitting.In addition, under configuration of face 30 cross-like of not shown step part and situation that jet 24 is almost all surrounded owing to be provided with refractory material piece 23, make the air of injection increased by flame stabilization face 25 constraint portions, therefore can better burn from the little directive property of flame stabilization face 25 ejection combustion air scopes and use air-flow, with the ability of mixing of following of raising with burning gases.
According to the double-end radiation tube burner shown in Figure 3 of said structure, will become negative pressure near the air jet 26 and draw from the opposing party's burner side draught by the burnt gas of waste gas circulation pipeline 12 with circulation owing to the injection energy of the combustion air that sprays with high-temperature high-flow rate.The burnt gas that flows along flowing of combustion air is sucked in the combustion air by brute force, and under the prerequisite that does not reduce temperature, one side reduces oxygen concentration, and one side increases the volume of jet flow.In addition, continue to suck burnt gas owing to before arriving flame stabilization face 25, suck waste gas in a large number thereafter, attract with the fuel than the low velocity parallel injection from the combustion air with directionality of flame stabilization face 25 ejections is powerful at the very start with high flow rate, one side is followed with it and is mixed one side and do not carry out the smoulder reaction up at a distance between flowing with not damping down a fire.And a part of fuel rightabout of being induced into the combustion air that near the zone the step part of flame stabilization face 25 produces flow in diffusion mix, and owing to formed the stable flame of using as kindling material, so when much less being high temperature, form stable flame during from low temperature.
Also have, the foregoing description is a preferred embodiment of the present invention, but is not limited; Can be in the scope that does not break away from content of the present invention to implementing do various changes, for example in the buner system of present embodiment, employing be to repeat to switch the mode of burner 2A, 2B every setting-up time, but be not limited.And can adopt structure to the temperature by each heat storage 6,6 after-combustion waste gas monitors and the temperature that arrives regulation in this temperature is switched during as 200 ℃ of positions.
In addition, be to be connected to burner or to be illustrated as main contents in the present embodiment with the alternate combustion mode of the heat storage of interior dress with combustion air with high temperature, but be not so limited, for example can do relative revolution for the combustion air feed system with gas extraction system by making heat storage, or, utilize the heat extraction of the burnt gas of high temperature that combustion air is preheating to and supply with single burner continuously behind the high temperature and make its continuous burning by adopting flow passage selector device to modes such as the fluid flow direction of heat storage switch.Fuel nozzle is the nozzle that adopts the double as pilot burner in the present embodiment in addition, but is not so limited, and according to circumstances pilot burner can be separately positioned near the jet of fuel nozzle.Also have, serve as main describing to adopt gaseous fuel in the present embodiment, but be not so limited, for example also can use the wet goods liquid fuel.In addition, combustion air also not necessarily will have the high flow rate about 100 meter per seconds, even the present invention also sets up under the slow certain situation of flow velocity.
Claims (4)
1. double-end radiation tube burner system, be positioned at the two ends configuration burner of the double-end radiation tube of homonymy at the radiant tube two ends, when making this, burnt gas is discharged from unburned one side's burner the burner alternate combustion, and supply with described burner after making this burnt gas and combustion air alternately combustion air is preheated to high temperature by heat storage, it is characterized in that, be provided with the waste gas circulation pipeline at the both ends that connect described radiant tube, and a part of burnt gas is circulated in radiant tube.
2. double-end radiation tube burner system as claimed in claim 1 is characterized in that, makes described waste gas circulation pipeline be connected to combustion air jet upstream side, and the jeting effect of the injection energy by utilizing combustion air is followed and flowed in the radiant tube.
3. double-end radiation tube burner system as claimed in claim 1 is characterized in that, described waste gas circulation pipeline is connected near the combustion air jet, and the jeting effect of the injection energy by utilizing combustion air is followed and flowed in the radiant tube.
4. double-end radiation tube combustion tube as claimed in claim 3 system, it is characterized in that, described burner will be than fuel more speed spray combustion with nozzle and the nozzle for jetting fuel configured in parallel of air, and when it being centered on refractory material at the end face of the jet that forms fuel nozzle and form between the end face of jet of air nozzle and step is set and makes the end face protrusion of the end face of described fuel nozzle side than air nozzle side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96103787A CN1188872A (en) | 1996-04-04 | 1996-04-04 | Double-end radiation tube burner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96103787A CN1188872A (en) | 1996-04-04 | 1996-04-04 | Double-end radiation tube burner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1188872A true CN1188872A (en) | 1998-07-29 |
Family
ID=5118200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96103787A Pending CN1188872A (en) | 1996-04-04 | 1996-04-04 | Double-end radiation tube burner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1188872A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514868B (en) * | 2009-03-03 | 2010-12-29 | 无锡鹰普精密铸造有限公司 | Roasting industrial furnace |
| CN102175029A (en) * | 2011-02-25 | 2011-09-07 | 丰城市环球资源再生科技发展有限公司 | Heat-energy-recirculation-type pop can depainting waste gas processor |
| CN102374545A (en) * | 2010-08-12 | 2012-03-14 | 昆山巨闳机械科技有限公司 | Heat-storage incinerator |
| CN102374546A (en) * | 2010-08-19 | 2012-03-14 | 昆山巨闳机械科技有限公司 | Heat accumulating type oxidation furnace |
| CN102777889A (en) * | 2012-08-24 | 2012-11-14 | 欧阳柏连 | High-efficiency and energy-saving biomass environmental-friendly furnace |
| CN103075726A (en) * | 2012-09-05 | 2013-05-01 | 伍镜清 | Burner capable of producing multiple burning working condition characteristics |
| CN103267290A (en) * | 2013-05-29 | 2013-08-28 | 河南乾丰暖通科技股份有限公司 | Combustor box body device with stepping air mixing function |
| CN102112809B (en) * | 2008-07-04 | 2013-09-18 | Ws热加工技术有限责任公司 | Radiant heating arrangement in which distortions are compensated |
| CN105814175A (en) * | 2013-12-13 | 2016-07-27 | 株式会社Ihi | Tar reforming furnace |
| CN112524606A (en) * | 2020-12-04 | 2021-03-19 | 武汉科技大学 | Radiant tube burner capable of realizing flameless combustion by entraining smoke |
-
1996
- 1996-04-04 CN CN96103787A patent/CN1188872A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102112809B (en) * | 2008-07-04 | 2013-09-18 | Ws热加工技术有限责任公司 | Radiant heating arrangement in which distortions are compensated |
| CN101514868B (en) * | 2009-03-03 | 2010-12-29 | 无锡鹰普精密铸造有限公司 | Roasting industrial furnace |
| CN102374545B (en) * | 2010-08-12 | 2015-01-14 | 昆山巨闳机械科技有限公司 | Heat-storage incinerator |
| CN102374545A (en) * | 2010-08-12 | 2012-03-14 | 昆山巨闳机械科技有限公司 | Heat-storage incinerator |
| CN102374546A (en) * | 2010-08-19 | 2012-03-14 | 昆山巨闳机械科技有限公司 | Heat accumulating type oxidation furnace |
| CN102374546B (en) * | 2010-08-19 | 2014-12-03 | 昆山巨闳机械科技有限公司 | Heat accumulating type oxidation furnace |
| CN102175029A (en) * | 2011-02-25 | 2011-09-07 | 丰城市环球资源再生科技发展有限公司 | Heat-energy-recirculation-type pop can depainting waste gas processor |
| CN102777889A (en) * | 2012-08-24 | 2012-11-14 | 欧阳柏连 | High-efficiency and energy-saving biomass environmental-friendly furnace |
| CN103075726A (en) * | 2012-09-05 | 2013-05-01 | 伍镜清 | Burner capable of producing multiple burning working condition characteristics |
| CN103075726B (en) * | 2012-09-05 | 2015-09-23 | 伍镜清 | A kind of burner that can produce repeated combustion operating mode feature |
| CN103267290A (en) * | 2013-05-29 | 2013-08-28 | 河南乾丰暖通科技股份有限公司 | Combustor box body device with stepping air mixing function |
| CN105814175A (en) * | 2013-12-13 | 2016-07-27 | 株式会社Ihi | Tar reforming furnace |
| CN105814175B (en) * | 2013-12-13 | 2019-02-15 | 株式会社 Ihi | Modified by tar furnace |
| CN112524606A (en) * | 2020-12-04 | 2021-03-19 | 武汉科技大学 | Radiant tube burner capable of realizing flameless combustion by entraining smoke |
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