CN202066015U - Thermal storage combustor - Google Patents
Thermal storage combustor Download PDFInfo
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- CN202066015U CN202066015U CN2011201551624U CN201120155162U CN202066015U CN 202066015 U CN202066015 U CN 202066015U CN 2011201551624 U CN2011201551624 U CN 2011201551624U CN 201120155162 U CN201120155162 U CN 201120155162U CN 202066015 U CN202066015 U CN 202066015U
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- burner
- heat
- spout
- temperature heat
- accumulation
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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
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Abstract
The utility model discloses a thermal storage combustor, which mainly solves the problems that the conventional thermal storage combustor used for a high-temperature shuttle kiln has poor heat-retaining capacity, and the service life of the fuel injection assembly is short. The thermal storage combustor includes a regenerative chamber and a burner connected with the regenerative chamber and provided with a spout and an outer wall, wherein a high-temperature heat retainer is fixed in the regenerative chamber and provided with one side near the burner; a low-temperature heat retainer is fixed in the regenerative chamber on the other side of the high-temperature heat retainer; through holes extending from the outside to the spout are formed on the outer wall of the burner; fuel injection units are installed in the through holes; injection included angles are formed by axes of the through holes and axis of the spout; and outlets of the holes are near the flame outlet end of the spout. In the utility model, as the length of the fuel injection units positioned in the through holes is smaller than the length of the through holes, the heat-retaining capacity of the thermal storage combustor is improved, and the fuel injection assembly performs multi-point fuel injection in the spout of the burner, thereby reducing heat loss of the fuel injection assembly, and prolonging the service life of the fuel injection assembly.
Description
Technical field
The utility model relates to a kind of burner, is specifically related to a kind of at ceramic industry shuttle kiln superhigh temperature heat-storage type burner.
Background technology
At present, known domestic high temperature shuttle kiln (1750 ℃ of furnace temperature) adopts conventional ordinary burner mostly, fuel is the liquefied gas or the natural gas of high heating value, and the conventional formula combustion system that matches is to heating in the stove, for energy savings consumption, utilizing heat exchanger that combustion air is carried out preheating, to reach the part purpose of energy saving, is the domestic and international technology of comparative maturity.
Conventional general expression burner structure is fairly simple, fuel is entered by different passages respectively with combustion air, spray at burner nozzle, spout is through particular design, so that make the full and uniform mixing of fuel and combustion air, carry out partial combustion afterwards in the burner block cavity, last form with high speed flame gas sprays in the stove and heats.The characteristics of this kind burner are in the flame set of organizations, good rigidly, but two main shortcomings are arranged:
1, owing to be conventional general expression burning, air preheating temperature lower (about 400-700 ℃) causes the heat energy major part of high-temperature flue gas to slattern, and the thermal efficiency is lower, and energy consumption is very high.
2, since furnace temperature up to 1750 ℃, in combustion process, NOx thing growing amount sharply increases, environmental protection index can exceed standard.
High temperature shuttle kiln manufacturer both domestic and external or user are at the problems referred to above, also once tried to replace conventional ordinary burner with conventional heat-storage type burner, to reach the purpose of energy-conserving and environment-protective, existing heat-accumulation combustor as shown in Figure 1, be provided with resistant to elevated temperatures heat storage in the burner, fuel channel is by walking pipeline in the middle of the heat storage, anterior near the ejection of burner position from heat storage then, subject matter is:
1, because furnace gas temperature is very high, big to the heat storage demand, and the requirement of material heatproof is very high, causes the burner volume bigger, and cost is very high, and exhaust gas temperature often can fall, and damages upstream device, energy-saving index can not produce a desired effect.
2, walk fuel in the middle of this kind burner adopts, walk the form of preheated air on every side, preheated air temperature is up to more than 1000 ℃, and NOx thing growing amount sharply increases, and environmental protection index can exceed standard; And middle fuel ejection assemblies (fuel sleeve pipe and Fuel lance) is in the environment of high-temperature flue gas and the constant checker of preheated air for a long time, is easy to be burnt out, and protects even feed cooling air, and service life is also very short.
Because existing high temperature shuttle kiln causes upstream device to damage with heat-accumulation combustor heat storage capacity difference easily, the fuel ejection assemblies of burner is arranged between the accumulation of heat assembly, damage easily, cause heat-accumulation combustor short service life, and the flame combustion temperature is too high in the burner, causes producing too much NOx.
Summary of the invention
Main purpose of the present utility model is to provide a kind of heat-accumulation combustor, it mainly solves, and existing high temperature shuttle kiln is poor with the heat-accumulation combustor heat storage capacity, fuel ejection assemblies short problem in service life, the utility model provides a kind of burner with high-temperature heat accumulation body and low-temperature heat accumulating body, strengthened the heat storage capacity of heat-accumulation combustor, and fuel ejection assemblies multi-point injection fuel in the burner spout, reduce the thermal losses of fuel ejection assemblies, improve its service life.
A kind of heat-accumulation combustor, comprise regenerator, and the burner with spout and outer wall that is connected with regenerator, be fixed with the high-temperature heat accumulation body in the regenerator, high-temperature heat accumulation body one side also is fixed with the low-temperature heat accumulating body that leans against high-temperature heat accumulation body opposite side near burner in described regenerator; Have the through hole that is extended to spout by the outside on the outer wall of burner, the playpipe of fuel injection unit is installed in the through hole.
Wherein, form the material spray angle between the axis of the axis of through hole and described spout.
In addition, the outlet in hole is near the flame export end of described spout.
Preferably, fuel injection unit is arranged in the length of the length of described through hole less than described through hole.
In addition, described through hole has a plurality of, and a plurality of through holes distribute around described spout.
Wherein, the axis of a plurality of through holes forms different material spray angles respectively with between the axis of described spout.
Wherein, the port of spout for surrounding by described outer wall.
Preferably, the low-temperature heat accumulating body is a honeycomb ceramics; Separate by grid between low-temperature heat accumulating body and the high-temperature heat accumulation body.
Wherein, regenerator is fixed with flue gas/air duct chamber at the low-temperature heat accumulating body away from high-temperature heat accumulation body one side, and low-temperature heat accumulating body and flue gas/air duct separates by grid between the chamber, and flue gas/air duct chamber is provided with exhanst gas outlet/air intlet.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model is at the high problem of accumulation of heat exhaust gas temperature, original single heat storage is become the form that two kinds of heat storages combine, promptly be divided into high-temperature heat accumulation district and low-temperature heat accumulating district, the high-temperature heat accumulation district is positioned at the burner front portion, near high-temperature flue gas, this part heat storage adopts the beautiful ceramic bead of the very high zirconium steel of heatproof, flue gas enters the low-temperature heat accumulating district after cooling, this part heat storage adopts heatproof medium and heating surface is big, the honeycomb ceramics that ability is strong, high-temperature heat accumulation by the high-temperature heat accumulation body is given flue gas cool-down, further lower the temperature for flue gas by the low-temperature heat accumulating body then, flue-gas temperature can be reduced to predetermined discharging scope, under preventing to damage equipment is arranged; Whole heat storage capacity improves, and has reduced cost, and exhaust gas temperature reduces, the energy-conservation about 40-50% of more conventional general expression burner.
2, the utility model is by changing the position of original fuel ejection assemblies, become the form of oblique cutting multi-point injection in the combustor nozzle by the logical combustion gas in original center.This form can be hidden in the fuel ejection assemblies in the burner block, high temperature gases recirculating enters in the burner during commutation, do not come in contact with the fuel ejection assemblies, avoid being burnt out by high-temperature flue gas, can completely abolish the cooling segment of fuel ejection assemblies by this structural improvement, reduce relevant energy resource consumption.And it is by changing fuel injection manner, changing over present multiple spot multiposition component by original single eject position sprays, avoid localized hyperthermia, and made airborne oxygen and the timely and full and uniform combination of fuel, thereby realized the low NOx drainage combustion efficiency.
Description of drawings
Fig. 1 is the structure cutaway view of existing heat-accumulation combustor;
Fig. 2 is the structure cutaway view of the utility model burner;
Fig. 3 is that A arranges schematic diagram to observed fuel channel from Fig. 2;
Structure cutaway view when Fig. 4 is the utility model burner air intake;
Structure cutaway view when Fig. 5 is the smoking of the utility model burner;
Fig. 6 is the structure cutaway view of the playpipe burner oil of the utility model burner when mixing with air intake.
Description of reference numerals among the figure: 1, burner; 1a, spout; 1b, outer wall; 11, through hole; 2, high-temperature heat accumulation body; 21, low-temperature heat accumulating body; 21a, 21b grid; 3, regenerator; 3a, block brick; 4, fuel channel; 41, playpipe; 41a, first playpipe; 41b, second playpipe; 5, cooling air inlet; 6, flue gas/air duct chamber; 61, exhanst gas outlet/air intlet; 7, furnace wall.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is elaborated, should be appreciated that following illustrated preferred embodiment only is used for description and interpretation the utility model, and be not used in qualification the utility model.
The utility model relates to a kind of heat-accumulation combustor, as shown in Figure 2, a kind of heat-accumulation combustor, comprise regenerator 3, and the burner 1 that is connected with regenerator 3 with spout 1a and outer wall 1b, be fixed with high-temperature heat accumulation body 2 in the regenerator 3, high-temperature heat accumulation body 2 one sides also are fixed with the low-temperature heat accumulating body 21 that leans against high-temperature heat accumulation body 2 opposite sides near burner 1 in described regenerator 3; Have the through hole 11 that is extended to spout 1a by the outside on the outer wall 1b of burner 1, the playpipe 41 of fuel injection unit is installed in the through hole.
Wherein, form the material spray angle between the axis of the axis of through hole 11 and spout 1a, and fuel injection unit is arranged in the length of the length of described through hole 11 less than described through hole 11, is convenient to fuel injection unit and ensconces in the outer wall 1a of burner 1 to spout 1b burner oil.
Usually according to producing needs, through hole 11 can be provided with a plurality of, and with the playpipe 4 that a plurality of fuel injection units are installed, a plurality of through holes 11 distribute around described spout 1a; The axis of a plurality of through holes 11 forms different material spray angles respectively with between the axis of described spout 1a, and the air that the fuel that sprays in the through hole can be more fully sprayed with the burner spout mixes, and promotes full combustion of fuel, reduces the NOx discharging.
The outer wall 1b of burner 1 is fixed in the furnace wall, and the fuel channel 4 of fuel injection unit is laid around burner outer wall 1b, and is fixed in the furnace wall 7, the port structure of the spout 1a of burner 1 for being surrounded by described outer wall 1b.
It is specially, as shown in Figures 2 and 3, fuel injection unit comprises fuel channel 4 and four playpipes 41 that are connected, playpipe 41 is inserted in the through hole 11, playpipe 41 is inboard near going out flame end to burner 1 by burner 1 outer oblique cutting by the through hole on the burner outer wall 11, and by the mouth of pipe of playpipe 41 in burner 1 to oblique the place ahead burner oil; And, as shown in Figure 6, every group of adjacent playpipe, the first playpipe 41a is different with the spray angle of the second playpipe 41b, the spray angle of the first playpipe 41a is α, the spray angle of the second playpipe 42b is β, and two playpipes have different fuel injection direction, and it is more even that fuel is mixed with air.
In addition, as shown in Figure 2, be the honeycomb ceramics that heatproof is medium and heating surface is big, ability is strong away from the low-temperature heat accumulating body 21 that burner 1 one sides are provided with at high-temperature heat accumulation body 2; Separate by grid 21a between low-temperature heat accumulating body 21 and the high-temperature heat accumulation body 2.Regenerator 3 is fixed with flue gas/air duct chamber 6 at low-temperature heat accumulating body 21 away from high-temperature heat accumulation body 2 one sides, separates by grid 21b between low-temperature heat accumulating body 21 and flue gas/air duct chamber 6, and flue gas/air duct chamber 6 is provided with exhanst gas outlet/air intlet 61.
When this heat-accumulation combustor is worked, as shown in Figure 4, after preheated air process low-temperature heat accumulating body 21 heat and 2 preheatings of high-temperature heat accumulation body, temperature rises, and with in burner 1 spout 1a, spray, the fuel mix that the air of ejection and fuel ejection assemblies spray is also burning evenly, fuel injection unit is adjusted into outer wall multi-angle burner oil in the burner spout from burner by single from burner middle part burner oil, and through hole is near burner spout flame export, so the flame major part that can make the burner ejection is all in the shuttle kiln internal combustion, multi-angle multi-point injection fuel can make fuel and the abundant mixed combustion of air intake, owing to feed preheated air from flame kernel, reduce the flame internal temperature, significantly reduce the NOx discharging.
When commutation, because fuel injection unit is ensconced in the through hole 11 of burner 1 outer wall 1b, the high-temperature flue gas that regenerator absorbs can not cause damage to fuel injection unit, and can save the cooling package of fuel injection unit, provides cost savings.Be provided with high-temperature heat accumulation district 2 in the regenerator and be positioned at the burner front portion, near high-temperature flue gas, this part heat storage adopts the beautiful ceramic bead of the very high zirconium steel of heatproof, flue gas enters low-temperature heat accumulating district 21 after cooling, this part heat storage adopts medium and heating surface is big, ability the is strong honeycomb ceramics of heatproof, flue-gas temperature is reduced to predetermined discharging scope, both reduced the infringement of high-temperature flue gas to upstream device, can make regenerator savings more heat again.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (9)
1. heat-accumulation combustor, comprise regenerator (3), and the burner (1) with spout (1a) and outer wall (1b) that is connected with regenerator (3), be fixed with high-temperature heat accumulation body (2) in the regenerator (3), high-temperature heat accumulation body (2) one sides is characterized in that near burner (1):
In described regenerator (3), also be fixed with the low-temperature heat accumulating body (21) that leans against high-temperature heat accumulation body (2) opposite side;
Have the through hole (11) that is extended to spout (1a) by the outside on the outer wall (1b) of described burner (1), the playpipe of fuel injection unit (41) is installed in the through hole (11).
2. heat-accumulation combustor according to claim 1 is characterized in that, forms the material spray angle between the axis of the axis of described through hole (11) and described spout (1a).
3. heat-accumulation combustor according to claim 2 is characterized in that, the outlet of described through hole (11) is near the flame export end of described spout (1a).
4. heat-accumulation combustor according to claim 3 is characterized in that, described fuel injection unit is arranged in the length of the length of described through hole (11) less than described through hole (11).
5. according to the arbitrary described heat-accumulation combustor of claim 1-4, it is characterized in that described through hole (11) has a plurality of, a plurality of through holes (11) distribute around described spout (1a).
6. heat-accumulation combustor according to claim 5 is characterized in that, the axis of described a plurality of through holes (11) forms different material spray angles respectively with between the axis of described spout (1a).
7. heat-accumulation combustor according to claim 1 is characterized in that, the port of described spout (1a) for being surrounded by described outer wall (1b).
8. heat-accumulation combustor according to claim 1 is characterized in that, described low-temperature heat accumulating body (21) is a honeycomb ceramics;
Separate by grid (21a) between described low-temperature heat accumulating body (21) and the high-temperature heat accumulation body (2).
9. heat-accumulation combustor according to claim 8, it is characterized in that, described regenerator (3) is fixed with flue gas/air duct chamber (6) at low-temperature heat accumulating body (21) away from high-temperature heat accumulation body (2) one sides, separate by grid (21b) between low-temperature heat accumulating body (21) and flue gas/air duct chamber (6), flue gas/air duct chamber (6) are provided with exhanst gas outlet/air intlet (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201551624U CN202066015U (en) | 2011-05-16 | 2011-05-16 | Thermal storage combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201551624U CN202066015U (en) | 2011-05-16 | 2011-05-16 | Thermal storage combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066015U true CN202066015U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201551624U Expired - Fee Related CN202066015U (en) | 2011-05-16 | 2011-05-16 | Thermal storage combustor |
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| CN (1) | CN202066015U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777915A (en) * | 2012-07-19 | 2012-11-14 | 马鞍山天洲节能工程科技有限公司 | Circumferentially distributed burner of natural gas channels |
| CN103939902A (en) * | 2013-01-18 | 2014-07-23 | 福建三能节能科技有限责任公司 | High-efficient energy-saving environmental protection type heat-storage flat flame combustor and combustion method thereof |
| CN104100972A (en) * | 2013-04-03 | 2014-10-15 | 福建三能节能科技有限责任公司 | Regenerative burner special for smelting secondary aluminum and implementing method thereof |
-
2011
- 2011-05-16 CN CN2011201551624U patent/CN202066015U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777915A (en) * | 2012-07-19 | 2012-11-14 | 马鞍山天洲节能工程科技有限公司 | Circumferentially distributed burner of natural gas channels |
| CN103939902A (en) * | 2013-01-18 | 2014-07-23 | 福建三能节能科技有限责任公司 | High-efficient energy-saving environmental protection type heat-storage flat flame combustor and combustion method thereof |
| CN104100972A (en) * | 2013-04-03 | 2014-10-15 | 福建三能节能科技有限责任公司 | Regenerative burner special for smelting secondary aluminum and implementing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20200516 |