CN104848220A - Heat-storage-type burning device - Google Patents
Heat-storage-type burning device Download PDFInfo
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- CN104848220A CN104848220A CN201510290224.5A CN201510290224A CN104848220A CN 104848220 A CN104848220 A CN 104848220A CN 201510290224 A CN201510290224 A CN 201510290224A CN 104848220 A CN104848220 A CN 104848220A
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- Prior art keywords
- burner block
- burner
- regenerator
- combustible gas
- connector
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- 239000007789 gas Substances 0.000 claims abstract description 64
- 238000005338 heat storage Methods 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 20
- 238000004873 anchoring Methods 0.000 claims abstract description 7
- 239000000567 combustion gas Substances 0.000 claims description 33
- 238000009826 distribution Methods 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000002829 reductive effect Effects 0.000 abstract 3
- 230000003647 oxidation Effects 0.000 abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 230000002950 deficient Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 40
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 12
- 239000003546 flue gas Substances 0.000 description 12
- 239000002737 fuel gas Substances 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000001172 regenerating effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000011449 brick Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/66—Preheating the combustion air or gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a heat-storage-type burning device which comprises a furnace body, a burner block part, a furnace wall connecting member, a heat storage chamber, a combustible gas incoming pipe, an air-gas connecting body and an igniter. The burner block part comprises a burner block pouring material and a metal plate, an air nozzle and multiple combustible gas nozzles are arranged on the burner block pouring material, the combustible gas nozzles are arranged in a manner of surrounding the air nozzle, and the metal plate sleeves the burner block pouring material and is connected with the same through an anchoring hook. By the heat-storage-type burning device, reductive in-furnace atmosphere can be generated, and an in-furnace temperature field is more uniform, so that oxidation burning loss of the surface of a workpiece is reduced; uniformity of the in-furnace temperature field ensures integral balance uniformity in heating of the workpiece, so that quality of a heated workpiece is improved, and service life of the burner block part is prolonged. Due to porous and hierarchic burning, high-temperature oxygen-deficient burning can be realized, NOx concentration in the process of burning is lowered remarkably, oxidation burning loss of melting products is reduced, and energy conservation and environment protection are realized.
Description
Technical field
The present invention relates to regenerator gas field of combustion technology, especially relate to a kind of for the heating furnace of industry and the heat accumulating burner capable of heat-treatment furnace such as metallurgical, mechanical.
Background technology
The limit that regenerative combustion technology can realize fume afterheat reclaims, there is the plurality of advantages such as energy-efficient and low pollution emission, can solve low yield and the high contradiction consumed in hot procedure, be the most widely used energy-saving and environmental protection combustion technology in present stage industrial furnace, this technical development is also quite ripe.Regenerative combustion technology is widely used on the industrial furnace that the continous ways such as the continuous heater for rolling steel of steel-pushing type, step-by-step movement continuous furnace take as the leading factor with stable state.At present, develop several single regenerative burner differed from one another both at home and abroad, and drop in Industrial Stoves application, but also also exist that furnace wall steel plate easily burns, burns with anger, heat storage volume is large, easily blocking, NOx discharge is high, burner block dismounting inconvenient, flame easily burns the problems such as steel billet.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, the present invention aims to provide a kind of heat accumulating burner capable, and this heat accumulating burner capable can improve furnace temperature uniformity, reduces the NOx concentration in combustion process.
According to the heat accumulating burner capable of the embodiment of the present invention, comprising: body of heater, limit the burner hearth with fire door in described body of heater, described body of heater comprises furnace wall and is arranged on the metal casing of described furnace wall outer surface; Burner block parts, described burner block parts comprise: burner block castable and metallic plate, described burner block castable is provided with air port and multiple combustible gas spout, described multiple combustible gas spout is arranged around described air port, to be enclosed within described burner block castable and to be connected by anchoring hook with described burner block castable outside described metallic plate; Furnace wall connector, described furnace wall connector arranges around described fire door and is fixedly connected on described metal casing, and described burner block part fits is at described fire door place and be removably connected on described furnace wall connector; Regenerator, is filled with heat storage in described regenerator, and the first end of described regenerator is provided with air intlet and exhanst gas outlet, and the second end of described regenerator is connected with the described air port in described burner block castable; Combustible gas inlet pipe, described combustible gas inlet pipe is connected with the described multiple combustible gas spouts in described burner block castable; Empty combustion gas connector, described empty combustion gas connector is connected between described burner block parts and described heat storage, first-class cavity and second cavity is limited in described empty combustion gas connector, described first-class cavity connects described second end of described regenerator and described air port respectively, described second cavity is connected with described multiple combustible gas spout, and described combustible gas inlet pipe to be connected on described empty combustion gas connector and to be communicated with described second cavity; Igniter, described igniter is connected to described burner block parts with ignited flammable gas.
According to the heat accumulating burner capable of the embodiment of the present invention, by being provided with air port and multiple combustible gas spout in the burner block castable of burner block parts, multiple combustible gas spout is arranged around air port, after can making flame ignition, atmosphere is controlled, produce reproducibility furnace atmosphere, temperature field in furnace is more even, thus reduce surface of the work oxidization burning loss, the uniformity of temperature field in furnace also ensure that the whole machine balancing uniformity of workpiece heat, thus improve the quality of heated parts, extend the service life of burner block parts.And porous fractional combustion, can High Temperature Air Combustion be realized, significantly reduce the NOx concentration in combustion process, reduce the oxidization burning loss of fusion smelting product, not only energy-conservation but also environmental protection.The setting of igniter, can make igniting safe and convenient more, realizes pulse-combustion and black furnace startup simultaneously.
In certain embodiments, described air port is oval or Long Circle.Thus, the flame that fuel gas lights rear formation is flat, and flat flame spreading area is wide, not easily causes the localized hyperthermia at burner block knockdown export place, can suppress the generation of NOx further, reduce the pollution to environment.
Particularly, the ratio of the line of apsides of described air port is 1.5-3.5.
Particularly, described empty combustion gas connector comprises: refractory tube, and described refractory tube is formed as tubular to limit described first-class cavity; Protection tube, is enclosed within outside described protection tube on described refractory tube to limit described second cavity with described refractory tube.
Further, heat accumulating burner capable also comprises: expansion chamber, and described expansion chamber is connected between described empty combustion gas connector and described regenerator.The application of expansion chamber makes the flue gas entering heat storage not easily block heat storage, has ensured the working condition of regenerator greatly, has decreased the cost of Maintenance and Repair, improve the service life of heat storage in regenerator.
Further, heat accumulating burner capable also comprises: expansion joint, and described expansion joint is connected between described empty combustion gas connector and described expansion chamber.The use of expansion joint, effectively can reduce body of heater because the breakage of the metal casing on the burner block parts that cause of thermal expansion and burner block parts own wt problem and furnace wall.
Advantageously, described burner block parts, described empty combustion gas connector, described expansion joint, described expansion chamber and the described regenerator distribution in " Z " shape.Thus, heat accumulating burner capable characteristics of compact layout, floor space is little, and soon, temperature efficiency is high, and drag losses is less, realizes the online replacing of the parts such as heat accumulating burner capable for accumulation of heat, exotherm rate.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the heat accumulating burner capable according to the embodiment of the present invention;
Fig. 2 is the burner block castable structural representation according to the embodiment of the present invention.
Reference numeral:
Heat accumulating burner capable 100,
Body of heater 1, fire door 10, burner hearth V, furnace wall 11, metal casing 12, furnace wall connector 13, second flange 131,
Burner block parts 2, burner block castable 21, air port 211, combustible gas spout 212, metallic plate 22, first flange 23, bolt 24, anchoring hook 25,
Second end b of the first end a of regenerator 3, heat storage 31, regenerator, air intlet 311, exhanst gas outlet 312, regenerator,
Combustible gas inlet pipe 4, igniter 5,
Empty combustion gas connector 6, first-class cavity P1, second cavity P2, refractory tube 61, refractory tube crosspiece 611, the refractory tube section of erecting 612, protection tube 62, protection tube crosspiece 621, the protection tube section of erecting 622,
Expansion chamber 7, cleaning door 71, expansion joint 8.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
In describing the invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Below with reference to Fig. 1 and Fig. 2, the heat accumulating burner capable 100 according to the embodiment of the present invention is described.
According to the heat accumulating burner capable 100 of the embodiment of the present invention, as shown in Figure 1, comprising: body of heater 1, burner block parts 2, regenerator 3, combustible gas inlet pipe 4 and igniter 5.Wherein, the burner hearth V with fire door 10 is limited in body of heater 1, burner block parts 2 are engaged in fire door 10 place, heat storage 31 is filled with in regenerator 3, regenerator 3 is connected with burner block parts 2 respectively with combustible gas inlet pipe 4, to spray into combustion air and fuel gas by burner block parts 2 in burner hearth V, igniter 5 is connected to burner block parts 2 with ignited flammable gas.
Here it should be noted that, the regenerative combustion technology that heat accumulating burner capable 100 adopts, this technology mainly utilizes high-efficiency thermal storage body Mist heat recovering.Specifically, in actual use, burner block parts 2, regenerator 3, combustible gas inlet pipe 4 and igniter 5 form a burner unit, body of heater 1 at least connect two said burner unit A and B.Wherein, the first end a of the regenerator 3 of each burner unit is provided with air intlet 311 and exhanst gas outlet 312, and the second end b of the regenerator 3 of each burner unit is connected with the burner block parts 2 in related burner unit.
When burner unit A is used for air inlet, the air intlet of the regenerator of burner unit A is opened and exhanst gas outlet is closed, combustible gas inlet pipe is opened, meanwhile, the exhanst gas outlet of the regenerator of burner unit B is opened and air intlet is closed, combustible gas inlet pipe also closes.Like this, from burner unit A flow into fuel gas in burner hearth V combustion, the flue gas produced after burning is then discharged from the exhanst gas outlet of the regenerator of burner unit B, and flue gas is when flowing through the regenerator of burner unit B, and the heat storage in the burned device unit B of partial heat absorbs.After combustion continuation a period of time, each parts of burner unit A and B carry out contrary operation, like this, combustion air is flowed into from the air intlet of the regenerator of burner unit B, combustion air absorbs the heat of heat storage in this regenerator when flowing through the regenerator of burner unit B, make combustion air reach the object of preheating.From burner unit B flow into fuel gas in burner hearth V combustion, burning after produce flue gas then discharge from the regenerator of burner unit A, flue gas is when flowing through the regenerator of burner unit A, and heat is absorbed by the heat storage in this regenerator.So, whole combustion system carries out periodicity reversing combustion.In each periodic duty process, air all passes through the heat storage after high-temperature flue gas preheating, is reclaimed by the waste heat in flue gas.
Adopt regenerative combustion technology, by utilizing the waste heat in heat storage recovered flue gas, the temperature of combustion air can be improved, in section Example, combustion air even can reach more than 1000 DEG C (only low than furnace temperature 100 DEG C), exhaust gas temperature is lower than 180 DEG C, compared with the combustion system being 400-500 DEG C with traditional combustion air temperature, greatly improve energy utilization rate and efficiency of combustion.
See figures.1.and.2, burner block parts 2 comprise: burner block castable 21 and metallic plate 22, burner block castable 21 is provided with air port 211 and multiple combustible gas spout 212, multiple combustible gas spout 212 is arranged around air port 211, be enclosed within burner block castable 21 outside metallic plate 22, burner block parts 2 are engaged in fire door 10.Second end b of regenerator 3 is connected with the air port 211 in burner block castable 21, and combustible gas inlet pipe 4 is connected with the multiple combustible gas spouts 212 in burner block castable 21.
Wherein, the setting of multiple combustible gas spout 212, be equivalent to porous fractional combustion, simultaneously in combustion by the jet of combustion medium, entrainment flue gas, achieve High Temperature Air Combustion, significantly reduce the NOx concentration in combustion process, a large amount of generations of NOx can be suppressed, decrease the oxidization burning loss of fusion smelting product, not only energy-conservation but also environmental protection simultaneously.By multiple combustible gas spout 212 is arranged around air port 211, the fuel gas that burner block parts 2 spray is enclosed in the periphery of combustion air, after can making flame ignition, atmosphere is controlled, produce reproducibility furnace atmosphere, temperature field in furnace is more even, thus reducing surface of the work oxidization burning loss, the uniformity of temperature field in furnace also ensure that the whole machine balancing uniformity of workpiece heat, thus improves the quality of heated parts.
And; air port 211 and combustible gas spout 212 are located at the side towards burner hearth V of burner block castable 21; fuel gas and air are all by mixed combustion after burner block parts 2; like this; the flame that fuel gas ejection after-combustion is formed is spread in burner hearth V by burner block parts 2, instead of flame is towards furnace wall and burner block parts 2 dry combustion method, makes flame away from burner block castable 21 part; thus play a protective role, extend the service life of burner block parts 2.
In addition, the setting of igniter 5, is controlled burning and the closedown of each burner unit, and can realize local and remote computer control mode by igniter 5, and burner is lighted a fire more safe and convenient, realizes pulse-combustion and black furnace starts simultaneously.
According to the heat accumulating burner capable 100 of the embodiment of the present invention, by being provided with air port 211 and multiple combustible gas spout 212 in the burner block castable 21 of burner block parts 2, multiple combustible gas spout 212 is arranged around air port 211, after can making flame ignition, atmosphere is controlled, produce reproducibility furnace atmosphere, temperature field in furnace is more even, thus reduce surface of the work oxidization burning loss, the uniformity of temperature field in furnace also ensure that the whole machine balancing uniformity of workpiece heat, thus improve the quality of heated parts, extend the service life of burner block parts 2.And porous fractional combustion, can High Temperature Air Combustion be realized, significantly reduce the NOx concentration in combustion process, reduce the oxidization burning loss of fusion smelting product, not only energy-conservation but also environmental protection.The setting of igniter 5, can make igniting safe and convenient more, realizes pulse-combustion and black furnace startup simultaneously.
In certain embodiments; burner block parts 2 are removably connected to fire door 10 place of body of heater 1; namely burner block parts 2 are absolute construction; the refractory wall 22 of burner block parts 2 not with body of heater 1 formed by integrally casting; burner block parts 2 can be facilitated to change separately; body of heater 1 need not be destroyed when changing burner block parts 2, having good protection to body of heater 1.The heat accumulating burner capable 100 of the embodiment of the present invention can be described as a kind of detachable heat accumulating burner capable.
Particularly, as shown in Figure 1, body of heater 1 comprises furnace wall 11 and is arranged on the metal casing 12 of furnace wall 11 outer surface, heat accumulating burner capable 100 also comprises: furnace wall connector 13, furnace wall connector 13 arranges around fire door 10 and is fixedly connected on metal casing 12, and burner block parts 2 are removably connected on furnace wall connector 13.By arranging furnace wall connector 13, can avoid having an impact to furnace wall 11 during 2 dismounting of burner block parts, and burner block parts 2 are easy to connect, simple, quick.
In the example depicted in fig. 1, furnace wall connector 13 is metalwork, and furnace wall connector 13 is welded to connect on metal casing 12, furnace wall connector 13 by Flange joint on burner block parts 2.Alternatively, metal casing 12 is steel plate.
More specifically, as shown in Figure 1, the periphery of burner block parts 2 is provided with the first flange 23, first flange 23 and is provided with bolt 24, the second flange 131, first flange 23 that furnace wall connector 13 is provided with around fire door 10 is fastened on furnace wall connector 13 by bolt 24.
Advantageously, metallic plate 22 is annular metallic layer, is provided with anchoring hook 25 between metallic plate 22 and mouth brick castable 21, and metallic plate 22 is fixedly connected with by anchoring hook 25 with mouth brick castable 21.When burner block parts 2 coordinate with body of heater 1, metallic plate 22 is inserted in fire door 10, and metal level is fitted on the internal face of fire door 10.In the process inserted, bolt 24 correspondence on the first flange 23 is inserted in the bolt hole on the second flange 131.
In certain embodiments, as shown in Figure 2, air port 211 is oval or Long Circle, and because multiple combustible gas spout 212 is arranged around air port 211, the flame making fuel gas light rear formation is flat.Flat flame spreading area is wide, not easily causes the localized hyperthermia in burner block parts 2 exit, can suppress the generation of NOx further, reduce the pollution to environment.
Preferably, the ratio of the line of apsides of air port 211 is 1.5-3.5.
Alternatively, combustible gas spout 212 is distributed on air port 211 around, and the quantity of combustible gas spout 212 is 4-10.
Alternatively, combustible gas spout 212 is circular, and the fuel gas of input is coal gas.
Further, as shown in Figure 1, igniter 5 is located on burner block parts 2, and the firing tip of igniter 5 extend in the chamber that burner block castable 21 surrounds.
In certain embodiments, as shown in Figure 1, heat accumulating burner capable 100 also comprises: empty combustion gas connector 6, empty combustion gas connector 6 is connected between burner block parts 2 and heat storage 31, first-class cavity P1 and second cavity P2 is limited in empty combustion gas connector 6, first-class cavity P1 is communicated with the second end b and the air port 211 of regenerator 3 respectively, and second cavity P2 is connected with multiple combustible gas spout 212, and combustible gas inlet pipe 4 to be connected on sky combustion gas connector 6 and to be communicated with second cavity P2.Here, sky combustion gas connector 6 is set, not only be convenient to regenerator 3, combustible gas inlet pipe 4 and the spout connection on burner block parts 2, and the temperature of preheated air that the first-class cavity P1 of fuel gas Absorbable rod that flows through of second cavity P2 flows through, improve heat utilization ratio.
Advantageously, second cavity P2 is configured to arrange around first-class cavity P1.Wherein, because the preheated air temperature circulated in first-class cavity P1 is higher, arranged by the first-class cavity P1 of second cavity P2 overcoat, the fuel gas of inflow fully can absorb the heat of preheated air, reduces the loss of heat.
Particularly, as shown in Figure 1, empty combustion gas connector 6 comprises: refractory tube 61 and protection tube 62, and refractory tube 61 is formed as tubular to limit first-class cavity P1, is enclosed within refractory tube 61 to limit second cavity P2 with refractory tube 61 outside protection tube 62.Alternatively, refractory tube 61 is for pouring into shaped piece, and outer protection pipe 62 is metal-back, and refractory tube 61 and protection tube 62 are connected and fixed by anchoring hook.
In certain embodiments, as shown in Figure 1, heat accumulating burner capable 100 also comprises: expansion chamber 7, and expansion chamber 7 is connected between sky combustion gas connector 6 and regenerator 3.Expansion chamber 7 can carry out dedusting to the flue gas containing dust, the application of expansion chamber 7 makes the flue gas entering heat storage 31 not easily block heat storage 31, the great working condition having ensured regenerator 3, decreases the cost of Maintenance and Repair, improves the service life of heat storage 31 in regenerator 3.
Particularly, as shown in Figure 1, expansion chamber 7 bottom is provided with cleaning door 71, is convenient to periodic cleaning dust.
More specifically, expansion chamber 7 and regenerator 3 share a metal shell in burner, and the inside of expansion chamber 7 has built refractory masses by laying bricks or stones, and regenerator 3 inside is rectangular body cavity, and regenerator 3 inside is provided with heat storage 31.
Further, as shown in Figure 1, heat accumulating burner capable 100 also comprises: expansion joint 8, and expansion joint 8 is connected between sky combustion gas connector 6 and expansion chamber 7.The use of expansion joint 8, effectively can reduce body of heater 1 because the breakage of burner block parts 2 that causes of thermal expansion and burner block parts 2 own wt problem, the problem such as simultaneously also avoid the burning of metal casing 12 on furnace wall 11, burn with anger.
In the example of fig. 1, one end of expansion joint 8 and expansion chamber 7 top are connected by flange and install fixing, and the other end of expansion joint 8 is connected by flange and empty combustion gas connector 6 by flange and is installed and fixes.
In certain embodiments, as shown in Figure 1, burner block parts 2, empty combustion gas connector 6, expansion joint 8, expansion chamber 7 and regenerator 3 distribution in " Z " shape.By adopting " Z " character form structure, heat accumulating burner capable 100 characteristics of compact layout, floor space is little, and soon, temperature efficiency is high, and drag losses is less for accumulation of heat, exotherm rate.
In addition, above-mentioned parts are the distribution of " Z " shape, also facilitate the layout of heat accumulating burner capable 100, and when other devices such as motionless pipelines, can realize the online replacing of each parts of heat accumulating burner capable 100.
In the example depicted in fig. 1, the cross section of expansion joint 8 is rectangle, and one end cross section that empty combustion gas connector 6 is connected with expansion joint 8 is also rectangle.In empty combustion gas connector 6, refractory tube 61 and burner block castable 21 link are oval or Long Circle, and protection tube 62 and burner block castable 21 link are circular.
Particularly, as shown in Figure 1, refractory tube 61 comprises refractory tube crosspiece 611 and the refractory tube section of erecting 612, and refractory tube crosspiece 611 is connected in burner block castable 21, and the refractory tube section of erecting 612 vertically extends from one end away from body of heater 1 of refractory tube crosspiece 611.Protection tube 62 comprises protection tube crosspiece 621 and the protection tube section of erecting 622, and protection tube crosspiece 621 is connected in burner block castable 21, and the protection tube section of erecting 622 vertically extends from one end away from body of heater 1 of protection tube crosspiece 621.
Wherein, one end cross section of the connection burner block castable 21 of refractory tube crosspiece 611 is oval, one end cross section of the connection expansion joint 8 of the refractory tube section of erecting 612 is rectangle, the cross section of the end that is connected with each other of refractory tube crosspiece 611 and the refractory tube section of erecting 612 is circle, and the cross section that namely refractory tube crosspiece 611 passes through is circular by elliptical deformation.The cross section that the refractory tube section of erecting 612 passes through becomes circle from rectangle, and the cross section that the protection tube section of erecting 622 passes through becomes circle from rectangle.
It should be noted that, along pipeline bearing of trend, the pipeline that cross section directly becomes rectangle from ellipse is not easily processed, and the cross section of pipeline is faded to circle by ellipse, or fade to the realization of circular handling ease by rectangle, therefore the cross section of above-mentioned refractory tube 62 is arranged, and can realize refractory tube 61 and be changed into the rectangular cross-sectional shape be connected with expansion joint 8 by the elliptical cross sectional shape be connected with burner block castable 21.
Advantageously, the pipe fitting that protection tube 62 welds for circular metal, protection tube 62 two ends are connected to circular metal flange and rectangular metal flange.Expansion joint 8 adopts metal shell inside to carry out part by refractory material and builds by laying bricks or stones, and expansion joint 8 is rectangle, and expansion joint 8 is also installed firmly with the rectangular metal Flange joint of space gas connection chamber.
In certain embodiments, heat storage 31 is honeycomb ceramic heat accumulator, thus, can ensure that heat storage 31 has higher heat storage capacity.Particularly, honeycomb ceramic heat accumulator comprises bilayer, i.e. high-temperature ceramic honeycomb heat storage and low temperature honeycomb ceramic heat accumulator, and the second end b of the contiguous regenerator 3 of high-temperature ceramic honeycomb heat storage is arranged, and the first end a of the contiguous regenerator 3 of low temperature honeycomb ceramic heat accumulator is arranged.Double-layer heat-accumulation body 31 can further improve heat storage capacity, and saves material cost.
Alternatively, as shown in Figure 1, air intlet 311 and exhanst gas outlet 312 are same opening, and this opening is connected with the house steward that discharges fume with air header respectively by triple valve, by the switching of triple valve, the inflow air of this regenerator 3 can be realized or discharge the handoff functionality of flue gas.
Below with reference to Fig. 1, the structure according to the heat accumulating burner capable 100 of a specific embodiment of the present invention is described.
This heat accumulating burner capable 100 when mounted, first, furnace wall connector 13 is welded to fire door 10 place of furnace wall 11, the flange bolt of burner block parts 2 with furnace wall connector 13 is connected, and compress real for gap place plug with fire-retardent fiber felt-rug, then the flange of empty combustion gas connector 6 and the flange bolt of burner block parts 2 are connected, and install firmly, the flange of expansion joint 8 and empty combustion gas connector 6 is connected with bolt, again the air regenerator 3 be directly positioned over above support or platform is connected with the flange bolt of expansion joint 8, regenerator 3 is not fixed on platform, then honeycomb ceramic heat accumulator is placed with in regenerator 3 inside, high-temperature ceramic honeycomb heat storage is near burner block parts 2, low temperature honeycomb ceramic heat accumulator is by the first end a of regenerator 3.
During use, first lighted by igniter 5, after its smooth combustion, open and the triple valve before air regenerator 3 and branch gas tube road cut valve soon, make that air intlet 311 is opened, exhanst gas outlet 312 is closed, combustible gas inlet pipe 4 is opened.According to the thermic load of burner, the cold air of certain flow enters air regenerator 3, expansion joint 8 is flowed through after heat storage 31 is preheating to 1000-1100 DEG C, by entering burner block parts 2 after the first-class cavity P1 in empty combustion gas connector 6, spray from the oval air port 211 of burner block parts 2, coal gas enters burner block parts 2 by the second cavity P2 in empty combustion gas connector 6, and from burner block parts 2, combustible gas spout 212 sprays.The air port 211 of the burner block parts 2 of this embodiment is oval, Ratio of long radius to short radius is 2:1, combustible gas spout 212 quantity is 6 circular apertures, be distributed on the upper and lower of air port 211, combustible gas spout 212 and air port 211 angle are 5 °, in flat flame, spout flatness is now best.
According to the heat accumulating burner capable 100 of the embodiment of the present invention, cold air after regenerator 3 temperature close to furnace temperature, quick Thorough combustion after mixing with the fuel gas entered in stove, quick heating in burner hearth V, uniform temperature fields in burner hearth V, high temperature section operational effect is better, greatly improves heating efficiency, shorten heating cycle, improve prouctiveness.Exhaust gas temperature is dropped to less than 180 DEG C, the limit achieving fume afterheat reclaims, and fume afterheat utilization ratio is improved significantly, thus obtains higher energy utilization rate, reduces comprehensive method of investment cost simultaneously, improves system stability and security performance.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (7)
1. a heat accumulating burner capable, is characterized in that, comprising:
Body of heater, limits the burner hearth with fire door in described body of heater, described body of heater comprises furnace wall and is arranged on the metal casing of described furnace wall outer surface;
Burner block parts, described burner block parts comprise: burner block castable and metallic plate, described burner block castable is provided with air port and multiple combustible gas spout, described multiple combustible gas spout is arranged around described air port, to be enclosed within described burner block castable and to be connected by anchoring hook with described burner block castable outside described metallic plate;
Furnace wall connector, described furnace wall connector arranges around described fire door and is fixedly connected on described metal casing, and described burner block part fits is at described fire door place and be removably connected on described furnace wall connector;
Regenerator, is filled with heat storage in described regenerator, and the first end of described regenerator is provided with air intlet and exhanst gas outlet, and the second end of described regenerator is connected with the described air port in described burner block castable;
Combustible gas inlet pipe, described combustible gas inlet pipe is connected with the described multiple combustible gas spouts in described burner block castable;
Empty combustion gas connector, described empty combustion gas connector is connected between described burner block parts and described heat storage, first-class cavity and second cavity is limited in described empty combustion gas connector, described first-class cavity connects described second end of described regenerator and described air port respectively, described second cavity is connected with described multiple combustible gas spout, and described combustible gas inlet pipe to be connected on described empty combustion gas connector and to be communicated with described second cavity;
Igniter, described igniter is connected on described burner block parts with ignited flammable gas.
2. heat accumulating burner capable according to claim 1, is characterized in that, described air port is oval or Long Circle.
3. heat accumulating burner capable according to claim 2, is characterized in that, the ratio of the line of apsides of described air port is 1.5-3.5.
4. heat accumulating burner capable according to claim 1, is characterized in that, described empty combustion gas connector comprises:
Refractory tube, described refractory tube is formed as tubular to limit described first-class cavity;
Protection tube, is enclosed within outside described protection tube on described refractory tube to limit described second cavity with described refractory tube.
5. heat accumulating burner capable according to claim 4, is characterized in that, also comprises: expansion chamber, and described expansion chamber is connected between described empty combustion gas connector and described regenerator.
6. heat accumulating burner capable according to claim 5, is characterized in that, also comprises: expansion joint, and described expansion joint is connected between described empty combustion gas connector and described expansion chamber.
7. heat accumulating burner capable according to claim 6, is characterized in that, described burner block parts, described empty combustion gas connector, described expansion joint, described expansion chamber and described regenerator be distribution in " Z " shape.
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| CN104848220B (en) | 2017-05-03 |
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Denomination of invention: Inverting time control method for heat accumulation type burner Effective date of registration: 20180322 Granted publication date: 20170503 Pledgee: The Bank of Beijing Limited by Share Ltd. Anwar Road Branch Pledgor: Shenwu Technology Group Co.,Ltd. Registration number: 2018990000210 |
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