CN201521961U - Flameless burning and heat accumulating type high-speed burner - Google Patents
Flameless burning and heat accumulating type high-speed burner Download PDFInfo
- Publication number
- CN201521961U CN201521961U CN2009201287022U CN200920128702U CN201521961U CN 201521961 U CN201521961 U CN 201521961U CN 2009201287022 U CN2009201287022 U CN 2009201287022U CN 200920128702 U CN200920128702 U CN 200920128702U CN 201521961 U CN201521961 U CN 201521961U
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- combustion
- gas pipe
- flameless
- flame
- combustion gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a flameless burning and heat accumulating type high-speed burner. The burner comprises a burner body; and an air or flue gas channel, a vesicular heat accumulating body, a burning cavity, a gas pipeline and an ignition device are arranged in the burner body. The burner is characterized in that a flame burning gas pipe and a flameless burning gas pipe are connected to the gas pipeline; a flame burning control valve for controlling the flame burning gas pipe is arranged on the flame burning gas pipe; a flameless burning control valve for controlling the flameless burning gas pipe is arranged on the flameless burning gas pipe; both the flame burning gas pipe and the flameless burning gas pipe are pumped in the burning cavity; and the pore diameter of a flameless burning gas spraying orifice at the tail end of the flameless burning gas pipe is smaller than that of a flame burning gas spraying orifice at the tail end of the flame burning gas pipe. The flameless burning and heat accumulating type high-speed burner provided by the utility model has the advantages that the utilization efficiency of energy is high; the evenness of boiler temperature is ensured; the discharge amount of NOX also can be considerably reduced; various pipelines at the periphery of the cavity can be protected from loss by burning; the service life of the burner is effectively prolonged; and the flameless burning is conducted at a high temperature, so that the temperature of flame is effectively controlled.
Description
Technical field
The utility model relate to a kind of high, in, flame industrial fuel-fired furnace burner arranged, especially high, in, the Flameless combustion heat accumulating type high-speed combustion nozzle of flame industrial fuel-fired furnace arranged.
Background technology
Regenerative combustion technology is the present best energy-saving combustion technology of energy-saving effect in the world, its principle is to adopt the paired burner that has heat storage to carry out the burning of control formula, when a burner combustion, another burner carries out air-breathing smoke evacuation, high-temperature flue gas during by heat storage and heat storage carry out thermal energy exchange, heat storage heat absorption, high-temperature flue-gas reduce; Through certain hour, after the heat storage accumulation of heat is saturated, commutate, during another burner combustion, cold air or fuel enter burner from the higher heat storage of endothermic temperature, heated by this heat storage; Simultaneously, the burner of former burning carries out air-breathing smoke evacuation, and high-temperature flue gas with the heating of its heat storage, carries out heat exchange again, by the continuous alternate combustion repeatedly of two burners, reaches energy-conservation effect.The name that applicant was applied on March 8th, 2006 is called " heat accumulating type impulse burner ", the patent No. is the disclosed technology contents of utility model patent of ZL200620110073.7, is exactly a kind of heat storage type combustion burner.Burner of the prior art, structure respectively have difference, and its common ground is that combustion air air inlet pipe and fuel air pipe mix the disposable burning in back in burner, cause the flame combustion temperature higher, for high heating value gas, flame temperature can reach more than 2000 ℃, because flame temperature and NO
XThe growing amount exponent function relation, conventional heat storage type combustion is facilitated NO greatly
XGeneration.NO
XAs burnt gas, can damage the ozone layer, cause acid rain and human body is produced strong impulse, facilitate PUD D etc., bigger environmental pollution is arranged, be to need strict control.
At present, the dispersed combustion mode that metallurgy industry is commonly used is though can reduce NO
XDischarge capacity still, is not suitable for the cycle stove, and flame and moderate oven are particularly arranged.Dispersed combustion causes flaming combustion efficient low, and flame momentum and underspeed can't satisfy the high temperature-controlled precision of cycle stove, the inhomogeneity requirement of high furnace temperature.
In addition, in aforesaid heat-accumulating burner,, burn out naked light pipeline on every side etc. easily, cause shorten its service life because flame temperature can reach more than 2000 ℃; Especially metallic conduit can not use with regard to burning out in use for some time.And if adopt earthenware duct, though improved resistance to elevated temperatures, earthenware duct in the heat storage type combustion process under repeatedly the effect of colding and heat succeed each other, embrittlement easily, its service life is still not long.
Summary of the invention
The utility model provides a kind of and reduces NO in the combustion product by the flameless combustion mode at the above deficiency of the burner of prior art
XContent, prolong the burner Flameless combustion heat accumulating type high-speed combustion nozzle in service life.
The technical solution of the utility model: Flameless combustion heat accumulating type high-speed combustion nozzle, comprise burner body, in burner body, be provided with air or exhaust gases passes, cellular heat storage, combustion cavity, gas pipeline and igniter; It is characterized in that: on described gas pipeline, be connected with flame combustion gas pipe and flameless combustion Gas Pipe, the flaming combustion Gas Pipe is provided with flame burning control valve and controls, the flameless combustion control valve is set on the flameless combustion Gas Pipe controls, flaming combustion Gas Pipe and flameless combustion Gas Pipe all feed in the combustion cavity; The aperture of the flameless combustion gas jet orifice of flameless combustion Gas Pipe end is less than the aperture of the flaming combustion gas jet orifice of flaming combustion Gas Pipe end.
Additional feature is: the end of described combustion cavity is a flame jet, and the sectional area of flame jet dwindles gradually, is the reducing shape.
In flaming combustion Gas Pipe and flameless combustion Gas Pipe end the flame protective cover is set.
Described flaming combustion Gas Pipe and flameless combustion Gas Pipe are the concentric layer structures, and the flaming combustion Gas Pipe is at skin, and the flameless combustion Gas Pipe is at internal layer.
In the flame protective cover, be provided with ignition structure open in usual, comprise igniting air inlet pipe, igniting Gas Pipe and igniting pin; The air that the igniting air inlet pipe will be lighted a fire to be needed feeds, and the combustion gas that the igniting Gas Pipe will be lighted a fire to be needed feeds, and lights combustion gas under the spark effect that the igniting pin produces.
The terminal of described flameless combustion Gas Pipe directly feeds in the burner hearth or in the combustion cavity.
Flameless combustion is to carry out combustion and segmented, and cycle stove heating process is from flame being arranged to high temperature.When furnace temperature is not high, air themperature through the heat storage heating is not high, flaming combustion mode commonly used is burnt, burning occurs in the flaming combustion cavity of burner, the outlet of cavity designs for reducing, and burning produces high-temperature gas, is the high velocity jet mode through the combustion cavity shrinkage cavity, high speed and high temperature gas flow strong agitation furnace gas, temperature uniformity is good.Because when furnace temperature was low, air preheating temperature was not high, burning back flame temperature is not high, and flaming combustion mode commonly used can guarantee efficiency of combustion, can guarantee temperature uniformity again, also guarantees NO simultaneously
XDischarge capacity is lower than national requirements for environmental protection.
When furnace temperature raises, the air preheating temperature height is after uniform temperature, by flaming combustion control valve and flameless combustion control valve combustion system is switched to the flameless combustion mode from the flaming combustion mode, it is very high that the flameless combustion state is that combustion gas sprays into speed, in the flaming combustion cavity, fuel also has little time burning, after high-temperature gas through preheating mixes, through the cavity reducing, spray into cavity at a high speed, under the drive of spray speed, mix rapidly with furnace gas, behind the furnace gas and fuel mix that oxygen content is very low, greatly reduce the oxygen content of combustion mixture, cause burning under low-oxygen environment, to carry out, the reduction of oxygen content, reduced flame temperature widely, evidence, under given conditions, burning this moment is flameless combustion, do not observe flame at all, thereby reduced NO
XDischarge capacity.Because the ejection kinetic energy after the injection power of combustion gas and the gas after the air preheat expand is very high, flameless combustion can be satisfied the requirement of temperature uniformity and temperature-controlled precision equally.
From the above, Flameless combustion heat accumulating type high-speed combustion nozzle of the present utility model has the energy-conservation good advantage of fruit, the efficiency of energy utilization height of remitting of heat accumulating burner capable; When guaranteeing temperature uniformity, can also reduce NO significantly
XDischarge capacity meets the trend and the requirement of environmental protection; Can protect simultaneously cavity various pipelines on every side not by scaling loss again, effectively prolong its service life; Fuel sprays into by different spray orifices according to furnace temperature, forms different flame forms, at high temperature carries out flameless combustion, effectively controls flame temperature.
Description of drawings
Fig. 1 is first kind of example structure schematic diagram of the utility model;
Fig. 2 is second kind of example structure schematic diagram of the utility model;
Fig. 3 is the third example structure schematic diagram of the utility model;
Fig. 4 is the 4th kind of example structure schematic diagram of the utility model.
The specific embodiment
In Fig. 1, Flameless combustion heat accumulating type high-speed combustion nozzle of the present utility model, comprise burner body 1, in burner body 1, be provided with air or exhaust gases passes 2, cellular heat storage 3, combustion cavity 4, gas pipeline 5 and igniter 6 etc., the passage that air or exhaust gases passes 2 enter as the combustion air in when burning, or to the exhaust gases passes of discharged gas fume, air being imported the flue gas of (in combustion cavity 4 and combustion gas mixing burning) generation of maybe will burning in the burner body 1 discharges outside the burner body 1, the cellular heat storage of making by refractory material (as refractory ceramics class material) 3, the said minuscule hole that inside has many supplied gas to pass through, when gas passes through, can carry out exchange heat with gas; As what pass through is high-temperature flue gas, and 3 heats that absorb high-temperature flue gas of cellular heat storage raise himself temperature, and thermal energy storage is got up; When the combustion air that the flame degree is arranged by the time, then cellular heat storage 3 heat releases reduce himself temperature again when adding hot-air, with thermal energy transfer to combustion air.Combustion cavity 4 is zones of combustion gas and combustion air mixed combustion, produces thermal-flame; Gas pipeline 5 is input to the combustion gas in the external world in the burner body 1; The combustion gas that igniter 6 can in time will spray in the combustion cavity 4 is as required lighted, and prevents a large amount of gathering of combustion gas and the initiation security incident.Above as prior art, be not further described at this.
Improvement of the present utility model, be on gas pipeline 5, to be connected with flame combustion gas pipe 7 and flameless combustion Gas Pipe 8, flaming combustion Gas Pipe 7 is provided with flame burning control valve 9 and controls, flameless combustion control valve 10 is set on the flameless combustion Gas Pipe 8 to be controlled, flaming combustion Gas Pipe 7 and flameless combustion Gas Pipe 8 all feed in the combustion cavity 4, respectively with in the input of the combustion gas in it combustion cavity 4; The aperture of the flameless combustion gas jet orifice 81 of flameless combustion Gas Pipe 8 ends is less than the aperture of the flaming combustion gas jet orifice 71 of flaming combustion Gas Pipe 7 ends, the bundle mouth that form to improve jet velocity sprays, and makes combustion gas speed from 81 ejections of flameless combustion gas jet orifice greater than the combustion gas speed from 71 ejections of flaming combustion gas jet orifice.If desired, especially in the burner of some specific (special) requirements, higher in order to make from the combustion gas speed of flameless combustion gas jet orifice 81 ejections, can adopt on flameless combustion Gas Pipe 8 propulsion plant is set, give the combustion gas motive force in the flameless combustion Gas Pipe 8, its speed is increased; This propulsion plant is the air blast that is fit to gas, pressure valve etc., can improve the combustion gas transporting velocity in the flameless combustion Gas Pipe 8.Flaming combustion control valve 9 and flameless combustion control valve 10 open or close according to the needs of burner combustion on time, feed combustion gas when opening in combustion cavity 4.
The end of combustion cavity 4 is flame jets 41, and the sectional area of flame jet 41 dwindles gradually, is the reducing shape, can improve flame or combustion gas are ejected into burner hearth from flame jet 41 speed; Flame jet 41 among the figure is coniform reducings.Under the flaming combustion state, flame enters burner hearth with higher speed through flame jet 41; Under the flameless combustion state, combustion gas is through the flame jet 41 of reducing shape, spray into burner hearth at a high speed, under the drive of spray speed, mix rapidly with furnace gas, behind the furnace gas and combustion gas mixing that oxygen content is very low, greatly reduce the oxygen content of burning mixture, cause burning under low-oxygen environment, to carry out, the reduction of oxygen content, reduce flame temperature widely, thereby reduced the NOx discharge capacity.
Blown out by cold air in order to prevent flame; end in flaming combustion Gas Pipe 7 and flameless combustion Gas Pipe 8 is provided with flame protective cover 11, and flame protective cover 11 interior, stops combustion air directly to blow to flame the protection of combustion gas spout; with the retention flame, prevent fray-out of flame, avoid security incident.In addition; the spout 11a of flame protective cover 11 ends is reducing shapes, and the sectional area of spout 11a dwindles gradually, helps improving the jet velocity of flame or gas; spout 11a from the reducing shape enters in the combustion cavity 4 at a high speed, helps the abundant burning of combustion gas under flame or the flameless combustion state.
At the burning initial stage; flame and fire box temperature are all lower; in order to obtain stable flame at the burning initial stage; the utility model is offered conduction hole 11b on flame protective cover 11; the opening of conduction hole 11b is less, will be incorporated in the flame protective cover 11 from a small amount of combustion air that air or exhaust gases passes 2 enter, and can prevent that again combustion air is with flame blow-off simultaneously; make it under burning initial stage low-temperature condition, in flame protective cover 11, have stable flame.
For situation about effectively grasping and control is burnt; flame detector 12 is set; the end of flame detector 12 is arranged on and can detects around flameless combustion gas jet orifice 81 and the flaming combustion gas jet orifice 71; can detect this zone flame combustion situation (in the flame protective cover 11); so that detect and whether in time to be lighted, to burn whether stable etc. from the combustion gas of flameless combustion gas jet orifice 81 and 71 ejections of flaming combustion gas jet orifice, guarantee normal, the safe combustion of burner.
The center line of the center line of the flameless combustion gas jet orifice 81 on the flameless combustion Gas Pipe 8 of gas pipeline 5, the spout 11a of flame protective cover 11 and the center line of flame jet 41 coincide; can guarantee that combustion gas or flame enter in the burner hearth with the shortest distance; reduce its flow resistance, help the abundant burning of combustion gas under low temperature or the flameless combustion state.
As shown in Figure 2, in second kind of example structure of the utility model, no longer introduce with the structure same section among Fig. 1.The further improvement of second kind of example structure of the utility model is: flaming combustion Gas Pipe 7 and flameless combustion Gas Pipe 8 are concentric layer structures, commonly used is that flaming combustion Gas Pipe 7 is at skin, flameless combustion Gas Pipe 8 is controlled by flaming combustion control valve 9 and flameless combustion control valve 10 respectively at internal layer.The aperture of the flameless combustion gas jet orifice 81 of flameless combustion Gas Pipe 8 ends is less than the aperture of the flaming combustion gas jet orifice 71 of flaming combustion Gas Pipe 7 ends.
In Fig. 3, in the third example structure of the utility model, no longer introduce with the structure same section among Fig. 1, Fig. 2.In the present embodiment, flaming combustion Gas Pipe 7 and flameless combustion Gas Pipe 8 are beyond the concentric layer structure; Described igniter 6; comprise igniting air inlet pipe 13, igniting Gas Pipe 14 and igniting pin 15; the air that igniting air inlet pipe 13 will be lighted a fire to be needed feeds; the combustion gas that igniting Gas Pipe 14 will be lighted a fire to be needed feeds; under the spark effect that igniting pin 15 produces, light combustion gas; as the Chang Minghuo in the flame protective cover 11, wish that it keeps burning (especially at low thermophase) always during burner combustion, as the burning things which may cause a fire disaster of lighting the combustion gas that sprays in flaming combustion Gas Pipe 7 and the flameless combustion Gas Pipe 8.Igniting pin 15 is arranged on the bluff body 16, and the air at bluff body 16 back sides flows very low, helps combustion gas and air and mixes formation stable ignition flame in back at bluff body 16 back sides.Igniter of the present utility model can guarantee combustion gas reliable ignition as requested under the control device effect, prevent security incidents such as blast.
As Fig. 4 kind, in the 4th kind of example structure of the utility model, no longer introduce with the structure same section among Fig. 1, Fig. 2, Fig. 3.In the present embodiment; flameless combustion Gas Pipe 8 does not feed in the flame protective cover 11; the end of flameless combustion Gas Pipe 8 directly feeds in the burner hearth or in the combustion cavity 4, the structure shown in the figure is directly to feed in the burner hearth, and without flame protective cover 11 and combustion cavity 4.The flameless combustion Gas Pipe 8 of this kind structure is arranged on around the burner hearth more easily, and combustion gas can be sprayed in the burner hearth with more rational orientation and angle, and combustion gas and furnace gas mix, and more help the burning in flameless combustion stage.
Claims (9)
1. Flameless combustion heat accumulating type high-speed combustion nozzle comprises burner body (1), is provided with air or exhaust gases passes (2), cellular heat storage (3), combustion cavity (4), gas pipeline (5) and igniter (6) in burner body (1); It is characterized in that: on described gas pipeline (5), be connected with flame combustion gas pipe (7) and flameless combustion Gas Pipe (8), flaming combustion Gas Pipe (7) is provided with flame burning control valve (9) and controls, flameless combustion control valve (10) is set on the flameless combustion Gas Pipe (8) controls, flaming combustion Gas Pipe (7) and flameless combustion Gas Pipe (8) all feed in the combustion cavity (4); The aperture of the flameless combustion gas jet orifice (81) that flameless combustion Gas Pipe (8) is terminal is less than the aperture of the terminal flaming combustion gas jet orifice (71) of flaming combustion Gas Pipe (7).
2. Flameless combustion heat accumulating type high-speed combustion nozzle according to claim 1 is characterized in that: the end of described combustion cavity (4) is flame jet (41), and the sectional area of flame jet (41) dwindles gradually, is the reducing shape.
3. Flameless combustion heat accumulating type high-speed combustion nozzle according to claim 1 and 2 is characterized in that: in flaming combustion Gas Pipe (7) and flameless combustion Gas Pipe (8) end flame protective cover (11) is set.
4. Flameless combustion heat accumulating type high-speed combustion nozzle according to claim 1 and 2, it is characterized in that: described flaming combustion Gas Pipe (7) and flameless combustion Gas Pipe (8) are the concentric layer structures, flaming combustion Gas Pipe (7) is at skin, and flameless combustion Gas Pipe (8) is at internal layer.
5. Flameless combustion heat accumulating type high-speed combustion nozzle according to claim 3 is characterized in that: offer conduction hole (11b) on flame protective cover (11).
6. Flameless combustion heat accumulating type high-speed combustion nozzle according to claim 3 is characterized in that: described igniter (6) comprises igniting air inlet pipe (13), igniting Gas Pipe (14) and igniting pin (15).
7. Flameless combustion heat accumulating type high-speed combustion nozzle according to claim 6 is characterized in that: igniting pin (15) is arranged on the bluff body (16), forms stable ignition flame at bluff body (16) back side.
8. want 6 described Flameless combustion heat accumulating type high-speed combustion nozzles according to right, it is characterized in that: the terminal of flameless combustion Gas Pipe (8) directly feeds in the burner hearth or in the combustion cavity (4).
9. want 1 or 2 described Flameless combustion heat accumulating type high-speed combustion nozzles according to right, it is characterized in that: the center line of the spout (11a) of the center line of flameless combustion gas jet orifice (81), flame protective cover (11) and the center line of flame jet (41) coincide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201287022U CN201521961U (en) | 2009-09-01 | 2009-09-01 | Flameless burning and heat accumulating type high-speed burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201287022U CN201521961U (en) | 2009-09-01 | 2009-09-01 | Flameless burning and heat accumulating type high-speed burner |
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| Publication Number | Publication Date |
|---|---|
| CN201521961U true CN201521961U (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201287022U Expired - Lifetime CN201521961U (en) | 2009-09-01 | 2009-09-01 | Flameless burning and heat accumulating type high-speed burner |
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| CN (1) | CN201521961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639219B (en) * | 2009-09-01 | 2011-08-03 | 顾向涛 | Flameless combustion heat accumulating type high-speed combustion nozzle |
| CN110513718A (en) * | 2018-05-21 | 2019-11-29 | 安德森热能科技（苏州）有限责任公司 | A kind of method of flameless combustion control system |
-
2009
- 2009-09-01 CN CN2009201287022U patent/CN201521961U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639219B (en) * | 2009-09-01 | 2011-08-03 | 顾向涛 | Flameless combustion heat accumulating type high-speed combustion nozzle |
| CN110513718A (en) * | 2018-05-21 | 2019-11-29 | 安德森热能科技（苏州）有限责任公司 | A kind of method of flameless combustion control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100707 Effective date of abandoning: 20090901 |