CN106642111A - Fractional combustion heat accumulating type radiant tube combustion device - Google Patents
Fractional combustion heat accumulating type radiant tube combustion device Download PDFInfo
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- CN106642111A CN106642111A CN201611166444.8A CN201611166444A CN106642111A CN 106642111 A CN106642111 A CN 106642111A CN 201611166444 A CN201611166444 A CN 201611166444A CN 106642111 A CN106642111 A CN 106642111A
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- Prior art keywords
- air
- burner
- radiant tube
- gas
- coal gas
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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
- F23D14/12—Radiant burners
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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
-
- 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
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/1412—Special features of gas burners for radiant burners
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The invention provides a fractional combustion heat accumulating type radiant tube combustion device. The device comprises a single heat accumulating type combustor, a furnace body, at least three radiant tubes, an igniter burner, an igniter burner casing pipe, at least two combustion chambers, a four-way valve and a radiant tube connecting flange; the air single heat accumulating type combustor comprises a cover plate, an air body, an insulating layer, a heat accumulator, a burner block, a gas pipe, an air nozzle block, a primary air ventage, a coal gas flame connecting branched opening, an air flame connecting branched opening, a primary coal gas nozzle, a secondary air hydrocyclone, a secondary coal gas nozzle, a coal gas flame connecting pipe and a secondary coal gas pipe. According to the fractional combustion heat accumulating type radiant tube combustion device, the structure is simple, the operation is convenient, temperature requirements of a radiant tube combustor in different application fields can be met, homogeneity of the temperature in the inner part of the radiant tube is increased at the same time, smoke waste heat is effectively recycled, the emission of NOx in the smoke is reduced through the fractional combustion, investment on relevant corollary equipment of the radiant tube combustor, the igniter burner and the like is saved, and the system is simplified.
Description
Technical field
The invention belongs to regenerator gas field of combustion technology, and in particular to a kind of flat flame fractional combustion of employing arm
Multitubular bundles integrated form radiant tube combustion device.
Background technology
Gas fired radiant tubes, mainly with coal gas as fuel, in special sealing shroud combustion inner pipe, by the sleeve surface being heated
Heating object is transferred heat in thermal-radiating form, combustion product is not contacted with heating object；Regenerative gas spoke
The sensible heat of pipe flue gas after the setting of heat storage is using set combustion inner pipe is penetrated come warm-up combustion-supporting air or combustion gas, with the combustion heat
Efficiency high, the features such as stable, equipment dependability is high, it is widely used in various heat-treatment furnaces and continuous annealing furnace etc..According to
The heat accumulating type multitubular bundles radiant tube combustion that the own characteristic of radiant tube burner is developed in combination with regenerative combustion technology
Burn device to arise at the historic moment, heat accumulating type multitubular bundles radiant tube combustion device have meet efficiently, energy-saving and environmental protection regenerative combustion technology
There is more efficient integration, radiant power is high, and temperature is more uniform, and its structure is simpler while advantage, install, debug
It is convenient with overhauling.
Because gas fired radiant tubes is in course of normal operation, need to configure corresponding reversing control system and device.With
The extensive application of engineering project a, heat-treatment furnace need to be equipped with tens or even hundreds of radiant tube burner, with heat accumulating type combustion
As a example by gas radiant tube, the quantity and igniter burner and corresponding Iganition control system that need to configure radiant tube burner complements one another,
System is very huge, artificial cumbersome, high cost.As utility model of the notification number for CN 203231301U discloses one kind
Regenerative radiant tube burner, including two gas flow pipes, burner housing, gas-jet tube, two thermals, high temperature resistant sprays
Mouth and high-temperature resistant radiation pipe, the burner is provided with two thermals, can effectively carry out accumulation of heat circulation, is improving efficiency of combustion
On the basis of energy-conserving and environment-protective.But there is following technological deficiency in above-mentioned patent：1）The regenerative radiant tube burner is only applicable to rule
The less type of furnace of mould yield, by taking vertical pyrolysis oven as an example, the type of furnace 300-600 radiant tube, not only installation difficulty is big, space office
Promote, debugging and maintenance difficulty is more difficult to imagine.2）Penetrate pipe burner using the heat accumulating type makes because flame burns in radiant tube
Obtain radiant tube to be extremely difficult to uniformly in the temperature of axial direction, localized hyperthermia's degree situation equally restrains the use of this kind of radiant tube
Scope.3）The ignition system and equipment that the radiant tube is used under the larger operating mode of amount ratio is extremely complex, and cost of investment is very
It is high.Therefore, how to design a kind of temperature requirement for meeting burner different application field, increase the uniform of radiant tube internal temperature
Property, realize fractional combustion to reduce flue gas in NOx emission, the thermal-storage burning device utilizing radiant tube of simple in structure and low in cost become
The problem of this area urgent need to resolve.
The content of the invention
The present invention is directed to the deficiencies in the prior art, designs and develop a kind of fractional combustion heat accumulation type radiant tube burning dress
Put, it mainly meets the temperature requirement in radiant tube burner different application field, while increasing the uniform of radiant tube internal temperature
Property, significantly more efficient Mist heat recovering, fractional combustion reduces the discharge of NOx in flue gas, save radiant tube burner and
The input of the correlation corollary equipment such as igniter burner, has simplified system.
To solve above-mentioned technical problem, the technical solution used in the present invention is：The invention provides a kind of fractional combustion stores
Hot type radiant tube combustion device.Embodiments in accordance with the present invention, including：At least two air single heat accumulating type burners, body of heater, extremely
Few three radiant tubes, igniter burner, igniter burner sleeve pipe, at least two combustion chambers, cross valve and radiant tube adpting flanges；It is described
Air single heat accumulating type burner includes：Cover plate, body of air, heat-insulation layer, heat storage, burner block, gas pipe, air nozzle brick,
First air airport, coal gas connection flame mouth, air connection flame mouth, a gas port, secondary air cyclone, secondary coal gas
Spout, coal gas flame tube interconnector, secondary gas pipe, wherein：First burner A and the first combustion chamber A is located at the side of the body of heater, the
Two burner B and the second combustion chamber B are located at the opposite side of the body of heater, the burner of the first burner A and the second burner B
Brick is respectively protruding into the tapping of the first combustion chamber A and the second combustion chamber B, and to the indoor extension of burning, the burner block
External metallization flanged plate is fastenedly connected with corresponding combustion chamber；The adpting flange of the body of air is fixed with the flange of burner block
Connection, the cover plate is fastened by bolts with body of air, and at least three cavitys, heat-insulation layer are divided into inside the body of air
The inside of body of air is arranged on, at least three individual cavities that heat storage is placed are formed, the heat storage is placed in the chamber
Internal portion；The air nozzle brick is connected with burner block, and at least three cavitys are separated into inside the burner block, respectively with institute
State at least three cavitys divided equally body of air inside to be connected；The air nozzle brick front end is provided with described at least three once
Wind airport, air connection flame mouth described in secondary air cyclone and at least two described at least three, the Secondary Air is empty
The cener line of at least three cavitys being separated into inside cyclonic current device and the burner block is coaxially arranged, and the First air is empty
Pore is arranged in described at least three in the underface of the secondary air cyclone, at least two air connection flame mouth
Between First air airport；The gas pipe is located in the cavity of the air nozzle brick, is divided into upper and lower two-layer, wherein, lower floor
For coal gas flame tube interconnector, upper strata is secondary gas pipe, is connected with branch gas tube road after upper and lower two-layer parallel connection, the coal gas flame tube interconnector
A gas port described at least three and multiple coal gas connection flame mouths are provided with, are provided with least on the secondary gas pipe
Three secondary gas ports, each secondary gas port central axis and corresponding secondary air cyclone axis coaxle
Arrangement, planar horizontal arrangement and all spout axis on the coal gas flame tube interconnector that the secondary gas port axis is formed
Angle is formed between the plane of formation；Burn with first, second air single heat accumulating type respectively first, second combustion chamber
Device fastening install, at least three radiant tube adpting flange axis on the combustion chamber respectively with described two on corresponding burner
The axis of secondary wind air cyclone coincides, and the radiant tube extends in the inner chamber of the body of heater, and its one end is burnt with first
The radiant tube adpting flange connection of room A, the other end is connected with the radiant tube adpting flange of the second combustion chamber B.
Inventor has found that fractional combustion thermal-storage burning device utilizing radiant tube according to embodiments of the present invention, simple structure is grasped
Facilitate, disclosure satisfy that the temperature requirement in radiant tube burner different application field, while increasing the equal of radiant tube internal temperature
Even property, effective Mist heat recovering, fractional combustion reduces the discharge of NOx in flue gas, saves radiant tube burner and point
The input of the related corollary equipment such as mouth is burnt, system has been simplified.
The metal flange of the body of air of embodiments in accordance with the present invention, the first burner A and the second burner B point
It is not attached by the metal flange on pipeline with two connectors of the cross valve, two other company of cross valve (21)
Interface is fastened respectively with the metal flange of smoke evacuation house steward and air header.
Embodiments in accordance with the present invention, burner block external metallization flanged plate is connected with corresponding combustion chamber using bolt fastening
Connect；The adpting flange of the body of air is fixedly connected with the flange of burner block with bolt；Two other connector of cross valve
It is fastened by bolts with the metal flange of smoke evacuation house steward and air header respectively；First, second combustion chamber respectively with it is described
First, second air single heat accumulating type burner is fastened by bolts installation.
Embodiments in accordance with the present invention, the external diameter of the secondary air cyclone is 60mm, the First air airport
It is 55-65mm with the distance of the secondary air cyclone；Each air connection flame mouth is arranged in two adjacent First airs
The centre position of airport, each air connection flame mouth draw ratio is 20-25.
Embodiments in accordance with the present invention, the distance between the coal gas flame tube interconnector and the secondary gas pipe are 55-65mm；
The coal gas flame tube interconnector arranges 3 gas ports and 14 coal gas connection flame mouths, a gas port
Latus rectum size is 20-30mm, and the coal gas connection flame mouth is per 7 for one group corresponding to air connection flame mouth, each mouth
Aperture pitch 25-30mm, aperture size is 3-5mm, and the latus rectum size of the secondary gas port is 25-35mm, described secondary
The plane that the plane that gas port axis is formed is formed with all spout axis on the coal gas flame tube interconnector is into 25 ° of angles.
Embodiments in accordance with the present invention, each combustion chamber is designed with an igniter burner, the igniter burner and institute
State igniter burner sleeve pipe and be fastened by bolts installation, cooling of electrode wind interface, ignition coal are respectively disposed with the igniter burner
Gas interface and igniting air interface, igniter burner load is 0.5-1kw, and jet size is 40-45mm, and combustion flame length is
150-200mm。
Embodiments in accordance with the present invention, the igniter burner casing centerline is at least three radiant tubes flange
In the plane that axis is formed, and perpendicular to radiant tube flange axis, the igniter burner casing centerline and the coal gas
The centreline spacing of flame tube interconnector and secondary gas pipe is in 130-150mm.
Embodiments in accordance with the present invention, the radiant tube horizontal mode is positioned over furnace interior, or vertically point row arrangement
In furnace interior, also or in " product " font arrangement.
Embodiments in accordance with the present invention, between the metal flange and the cross valve valve is provided with, for controlling burning
The break-make of air in device；The coal gas flame tube interconnector has cuts soon valve.
Embodiments in accordance with the present invention, the size of the heat storage is 150x100x100mm, and inner passage is using cellular
Aperture, orifice size is 2-4mm, and every piece of heat storage honeycomb aperture is interconnected inside burner.
The beneficial effects of the present invention is：
1）Than more uniform, in-furnace temperature fluctuates at ± 5 DEG C for furnace atmosphere, temperature.
2）Because flame burns in radiant tube so that radiant tube surface power is improved.
3）Igniter burner 4, air single regenerative burner 4, and related control device are reduced, cost is greatlyd save.
4）The space required for installation burner is reduced, facilitates the arrangement of process pipeline.
5）Smoke pre-heating is reclaimed to a greater extent, exhaust gas temperature can be controlled in less than 150 DEG C.
6）The content of NOx in flue gas is reduced, control content is in 50-80ppm.
Description of the drawings
Fig. 1 is the structure chart of fractional combustion thermal-storage burning device utilizing radiant tube of the present invention.
Fig. 2 is the structure chart of air single heat accumulating type burner of the present invention.
Fig. 3 is the A of air single heat accumulating type burner of the present invention to sectional view.
Fig. 4 is the B of air single heat accumulating type burner of the present invention to sectional view.
Fig. 5 is igniter burner structure chart of the present invention.
Wherein, 1, cover plate；2nd, body of air；3rd, heat-insulation layer；4th, heat storage；5th, burner block；6th, gas pipe；7th, air nozzle
Brick；8th, First air airport；9th, coal gas connection flame mouth；10th, air connection flame mouth；11st, a gas port；
12nd, secondary air cyclone；13rd, secondary air cyclone；14th, coal gas flame tube interconnector；15th, secondary gas pipe；16th, stove
Body；17th, radiant tube；18th, igniter burner；19th, igniter burner sleeve pipe；20th, combustion chamber；21st, cross valve；22nd, radiant tube connection method
It is blue.
Specific embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.The embodiments described below is exemplary, is only used for explaining the present invention, and is not understood that
For limitation of the present invention.Unreceipted particular technique or condition in embodiment, according to the skill described by document in the art
Art or condition are carried out according to product description.
According to an aspect of the present invention, the invention provides a kind of fractional combustion thermal-storage burning device utilizing radiant tube, Fig. 1
For the structure chart of the fractional combustion thermal-storage burning device utilizing radiant tube, as shown in figure 1, burner includes：At least two air
Single heat storage type burner, body of heater 16, at least three radiant tubes 17, igniter burner 18, igniter burner sleeve pipes 19, at least two burn
Room 20, cross valve 21 and radiant tube adpting flange 22；Wherein, two burners and combustion chamber are used as a working cell.First
Burner A and the first combustion chamber A is located at the side of the body of heater, and the second burner B and the second combustion chamber B is located at the body of heater
The burner block of opposite side, the first burner A and the second burner B is respectively protruding into the combustions of the first combustion chamber A and second
The tapping of room B is burnt, and to the indoor extension of burning, the burner block external metallization flanged plate connects with the fastening of corresponding combustion chamber
Connect；First, second combustion chamber 20 is installed respectively with first, second air single heat accumulating type burner fastening, the combustion
Burn room 20 at least three radiant tube adpting flange axis respectively with the secondary air cyclone on corresponding burner
12 axis coincides, and the radiant tube extends in the inner chamber of the body of heater, and its one end connects with the radiant tube of the first combustion chamber A
Acting flange 22 connects, and the other end is connected with the radiant tube adpting flange 22 of the second combustion chamber B.The first burner A and second
The metal flange of the body of air 2 of burner B passes through respectively the metal method on pipeline with two connectors of the cross valve 21
Orchid is attached, and two other connector of cross valve 21 is fastened respectively with the metal flange of smoke evacuation house steward and air header.
During work, first a burner A18 is lighted, after it stably burns, open the metal of burner A, B body of air 2
Flange early gate, now cross valve 21 work so that the air pipe line of burner A is connected, while opening coal gas flame tube interconnector 6
Valve is cut soon so that the gaspipe line of burner A is connected, burner A burnings, flame is propagated into radiant tube 17, by burning
Burning in the A20 of room reaches high-temperature flue gas in the B of combustion chamber by radiant tube 17.And burner B is incited somebody to action in the action of cross valve 21
Smoke-exhaust pipeline is connected, and now whole combustion system is normally run；Burner A, B cross valve 21 after a working unit time is held
Row inverse operation, makes whole combustion system periodicity reversing combustion.
According to a particular embodiment of the invention, Fig. 2-4 for air single heat accumulating type burner of the present invention structure chart and A to
To sectional view, as in Figure 2-4, the air single heat accumulating type burner includes B：Cover plate 1, body of air 2, heat-insulation layer 3, accumulation of heat
Body 4, burner block 5, gas pipe 6, air nozzle brick 7, First air airport 8, coal gas connection flame mouth 9, air connection flame mouth 10, one
Secondary gas port 11, secondary air cyclone 12, secondary gas port 13, coal gas flame tube interconnector 14, secondary gas pipe 15, its
In：The adpting flange of the body of air is fixedly connected with the flange of burner block, and the cover plate is tight by bolt with body of air
Gu, at least three cavitys are divided into inside the body of air, heat-insulation layer is arranged on the inside of body of air, forms heat storage and puts
At least three individual cavities put, the heat storage is placed in the inside cavity；The air nozzle brick is connected with burner block
Connect, at least three cavitys are separated into inside the burner block, at least three cavitys divided equally with body of air inside respectively
It is connected；The air nozzle brick front end is provided with First air airport described at least three, secondary air described at least three
It is separated into inside air connection flame mouth described in cyclone and at least two, the secondary air cyclone and the burner block
The cener line of at least three cavitys is coaxially arranged, the First air airport the secondary air cyclone just under
Side, at least two air connection flame mouth is arranged between at least three First airs airport.The gas pipe is located at
In the cavity of the air nozzle brick, it is divided into upper and lower two-layer, wherein, lower floor is coal gas flame tube interconnector, and upper strata is secondary gas pipe, on
It is connected with branch gas tube road after the parallel connection of lower two-layer, the coal gas flame tube interconnector is provided with a gas port described at least three and many
The individual coal gas connection flame mouth, is provided with secondary gas port described at least three, each two dant on the secondary gas pipe
Gas blowout mouth central axis arranges that the secondary gas port axis is formed with corresponding secondary air cyclone axis coaxle
Planar horizontal arrangement and the coal gas flame tube interconnector on form angle between the plane that formed of all spout axis.Thus, lead to
Cross Flat flame arm connection flame mode to be lighted a fire, also, join flame and the shared preheated air of fractional combustion, reduce NOx in flue gas
Content.
Ignited by igniter burner 18 the lower floor coal gas flame tube interconnector 14 of the setting of gas pipe 6 during burning, realizes one
Secondary stable burning, coal gas carries out second-time burning by secondary gas pipe 15 again, and fractional combustion makes combustion flame localized hyperthermia area's temperature
Degree is reduced, while realizing bias combustion by the proportioning of space gas, reduces flame temperature, so as to realize reducing thermal NO x's
Generate, reduce the purpose of pollutant emission.
According to a particular embodiment of the invention, the connected mode between part is not particularly limited, in some of the invention
In embodiment, burner block external metallization flanged plate is adopted with corresponding combustion chamber and is bolted connection；The company of the body of air
Acting flange is fixedly connected with the flange of burner block 5 with bolt；Two other connector of cross valve 21 respectively with smoke evacuation house steward and
The metal flange of air header is fastened by bolts；First, second combustion chamber 20 respectively with the first, second air list
Heat-storage type burner is fastened by bolts installation, is achieved in stable and firmly connects.
According to a particular embodiment of the invention, the size and set location of secondary air cyclone is not particularly limited,
In some embodiments of the invention, the external diameter of the secondary air cyclone 12 be 60mm, the He of First air airport 8
The distance of the secondary air cyclone 12 is 55-65mm；Each air connection flame mouth 10 be arranged in two it is adjacent once
The centre position of wind airport 8, each air connection flame draw ratio of mouth 10 is 20-25.
According to a particular embodiment of the invention, the size and set location of coal gas flame tube interconnector is not particularly limited, at this
In some bright embodiments, the distance between the coal gas flame tube interconnector and the secondary gas pipe are 55-65mm；The coal gas connection
Flame tube arranges 3 gas ports and 14 coal gas connection flame mouths, and the gas port latus rectum size is
20-30mm, the coal gas connection flame mouth is per 7 for one group corresponding to air connection flame mouth, each mouth aperture pitch 25-
30mm, aperture size is 3-5mm, and the latus rectum size of the secondary gas port is 25-35mm, the secondary gas port axis
The plane that the plane that line is formed is formed with all spout axis on the coal gas flame tube interconnector is into 25 ° of angles.
According to a particular embodiment of the invention, Fig. 5 is igniter burner structure chart of the present invention, as shown in figure 5, each combustion chamber
An igniter burner is designed with, the igniter burner is fastened by bolts installation, the point with the igniter burner sleeve pipe
Burn and be respectively disposed with mouth cooling of electrode wind interface, gas for ignition interface and igniting air interface, igniter burner load is
0.5-1kw, jet size is 40-45mm, and combustion flame length is 150-200mm.The igniter burner casing centerline is in institute
State in the plane of at least three radiant tube flange axis formation, and perpendicular to radiant tube flange axis, the igniting
The centreline spacing of the center line of burner sleeve pipe 19 and the coal gas flame tube interconnector 14 and secondary gas pipe 15 is in 130-150mm.
According to a particular embodiment of the invention, the set-up mode of radiant tube is not particularly limited, in some realities of the present invention
In applying example, the radiant tube horizontal mode is positioned over furnace interior, or vertically a point row are arranged in furnace interior, also or in " product "
Font is arranged.
According to a particular embodiment of the invention, in order to control air, it is provided between the metal flange and the cross valve
Valve, for controlling the break-make of air in burner.Meanwhile, the coal gas flame tube interconnector has cuts soon valve, in order to join cutting for flame
Change.
According to a particular embodiment of the invention, the material and specification of heat storage is not particularly limited, in some of the invention
In embodiment, the size of the heat storage 4 is 150x100x100mm, and inner passage adopts cellular aperture, and orifice size is 2-
4mm, the honeycomb aperture of every piece of heat storage 4 is interconnected inside burner.Hereby it is achieved that the storage and utilization of heat.
Embodiment one
First, burner block is stretched into combustion chamber tapping by each burner, and real compression will be filled at gap with fire-retardent fiber felt-rug, will be burnt
Mouth brick external metallization flanged plate is fastenedly connected with the connecting bolt of combustion chamber, then by the adpting flange of body of air and burning
The flange of mouth brick is connected with, and firmly installs, and cover plate is fastened by bolts with body of air, and heat-insulation layer is installed to sky
The inside of gas body, formed heat storage place 3 individual cavities, heat storage lay with its inside.Combustion chamber is by respective
Radiant tube adpting flange is connected with radiant tube by bolt, and radiant tube can be positioned over furnace interior with burst horizontal mode,
Can vertically divide row to be arranged in furnace interior, can be combined according to different technology conditions, the body of air in burner
Metal flange is attached respectively with two connectors of cross valve by the metal flange on pipeline, cross valve two other
Connector is fastened by bolts respectively with the metal flange of smoke evacuation house steward and air header.
During work, first a burner A18 is lighted, after it stably burns, open the metal method of burner A, B body of air
Blue early gate, now cross valve 19 work so that the air pipe line of burner A is connected, while opening the fast of coal gas flame tube interconnector 6
Cut valve so that the gaspipe line of burner A is connected, burner A burnings, flame leads in the inline flame burnings of combustion chamber A20, flame
Cross combustion chamber A20 and enter into and burnt in radiant tube 17, high-temperature flue gas are reached in the B of combustion chamber by radiant tube.And burner B
In the action of cross valve, smoke-exhaust pipeline is connected, discharged fume, according to the thermic load of burner, the cold air of certain flow
Air inlet heat storage, through heat storage 900-1000 DEG C is preheating to, and now whole combustion system is normally run；Burner A, B
Cross valve performs inverse operation after a working unit time, makes whole combustion system periodicity reversing combustion.This embodiment
Burner joins flame function-stable, ensure that ignition, and in 1000-1200mm, combustion gas is liquefied petroleum gas calorific value to the length of flame
12000kcal/m3, radiant tube surface temperature is respectively 800 DEG C after burning, 790 DEG C, 785 DEG C, every radiant tube axial direction temperature
About ± 5 DEG C of degree difference, NOx content is in 55ppm in flue gas.
Inventor has found that device according to embodiments of the present invention, air single heat accumulating type burner passes through combustion chamber with radiation
Tubular combination, develops multitubular bundles radiant tube combustion device, and the flame that the device goes out burner combustion burns in radiant tube,
Simultaneously high-temperature flue gas are discharged uniformly through another heat-storage type burner of radiant tube UNICOM, and Fire Radiation and high-temperature flue gas pass through
Radiant tube to furnace interior conducts heat, while improve the radiant power of radiant tube, each two burner and combustion chamber are one group, spoke
Penetrating the quantity of pipe can arrange multiple radiant tubes according to technological parameter, reduce the input of igniter burner system and device, while
The area of installing and using of device is reduced, debugs convenient, localized high temperature regions are reduced by fractional combustion, in realizing flue gas
NOx content is reduced to 50-80ppm.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or it is integral；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be arbitrary
Combine in an appropriate manner in individual or multiple embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification, simultaneously for one of ordinary skill in the art, according to the think of of the application
Think, will change in specific embodiments and applications.
Claims (10)
1. a kind of fractional combustion thermal-storage burning device utilizing radiant tube, it is characterised in that include：At least two air single heat accumulating types fire
Burner, body of heater（16）, at least three radiant tubes（17）, igniter burner（18）, igniter burner sleeve pipe（19）, at least two combustion chambers
（20）, cross valve（21）With radiant tube adpting flange（22）；The air single heat accumulating type burner includes：Cover plate（1）, air sheet
Body（2）, heat-insulation layer（3）, heat storage（4）, burner block（5）, gas pipe（6）, air nozzle brick（7）, First air airport（8）,
Coal gas connection flame mouth（9）, air connection flame mouth（10）, a gas port（11）, secondary air cyclone（12）, two dants
Gas blowout mouth（13）, coal gas flame tube interconnector（14）, secondary gas pipe（15）, wherein：
First burner A and the first combustion chamber A is located at the side of the body of heater, and the second burner B and the second combustion chamber B is located at institute
The burner block for stating the opposite side of body of heater, the first burner A and the second burner B is respectively protruding into the first combustion chamber A
With the tapping of the second combustion chamber B, and to the indoor extension of burning, the burner block external metallization flanged plate and corresponding combustion chamber
It is fastenedly connected；
The body of air（2）Adpting flange and burner block（5）Flange be fixedly connected, the cover plate（1）With body of air
（2）It is fastened by bolts, the body of air（2）Inside is divided at least three cavitys, heat-insulation layer（3）It is arranged on body of air
（2）Inside, formed heat storage place at least three individual cavities, the heat storage（4）It is placed in the inside cavity；
The air nozzle brick（7）With burner block（5）It is connected, the burner block（5）Inside is separated at least three cavitys, point
Not with the body of air（2）At least three cavitys that inside is divided equally are connected；The air nozzle brick（7）Front end is provided with least
Three First air airports（8）, secondary air cyclone described at least three（12）Join with air described at least two
Flame mouth（10）, the secondary air cyclone（12）With the burner block（5）At least three cavitys that inside is separated into
Cener line is coaxially arranged, the First air airport（8）In the secondary air cyclone（12）Underface, it is described
At least two air connection flame mouth（10）It is arranged at least three First airs airport（8）Between；
The gas pipe（6）Positioned at the air nozzle brick（7）Cavity in, be divided into upper and lower two-layer, wherein, lower floor be coal gas connection
Flame tube（14）, upper strata is secondary gas pipe（15）, it is connected with branch gas tube road after upper and lower two-layer parallel connection, the coal gas flame tube interconnector
（14）It is provided with a gas port described at least three（11）With multiple coal gas connection flame mouths（9）, the secondary gas pipe
（15）On be provided with secondary gas port described at least three（13）, each secondary gas port（13）Central axis with it is corresponding
Secondary air cyclone（12）Axis coaxle arrangement, the secondary gas port（13）The planar horizontal arrangement that axis is formed
With the coal gas flame tube interconnector（14）Angle is formed between the plane that upper all spout axis are formed；
First, second combustion chamber（20）Install with first, second air single heat accumulating type burner fastening respectively, it is described
Combustion chamber（20）On at least three radiant tube adpting flange axis respectively with corresponding burner the secondary air revolve
Stream device（12）Axis coincide, the radiant tube extends in the inner chamber of the body of heater, the spoke of its one end and the first combustion chamber A
Penetrate pipe adpting flange（22）The radiant tube adpting flange of connection, the other end and the second combustion chamber B（22）Connection.
2. device according to claim 1, it is characterised in that the air sheet of the first burner A and the second burner B
Body（2）Metal flange respectively with the cross valve（21）Two connectors be attached by the metal flange on pipeline,
Two other connector of cross valve (21) is fastened respectively with the metal flange of smoke evacuation house steward and air header.
3. device according to claim 2, it is characterised in that burner block external metallization flanged plate is adopted with corresponding combustion chamber
It is bolted connection；The body of air（2）Adpting flange and burner block（5）Flange be fixedly connected with bolt；Four-way
Two other connector of valve (21) is fastened by bolts respectively with the metal flange of smoke evacuation house steward and air header；Described
First, the second combustion chamber（20）It is fastened by bolts installation with the first, second air single heat accumulating type burner respectively.
4. the device according to any one of claim 1-3, it is characterised in that the secondary air cyclone（12）'s
External diameter is 60mm, the First air airport（8）With the secondary air cyclone（12）Distance be 55-65mm；Each
Air connection flame mouth（10）It is arranged in two adjacent First air airports（8）Centre position, each air connection flame mouth
（10）Draw ratio is 20-25.
5. the device according to any one of claim 1-3, it is characterised in that the coal gas flame tube interconnector（14）With it is described
Secondary gas pipe（15）The distance between be 55-65mm；The coal gas flame tube interconnector（14）3 gas ports are set
（11）With 14 coal gas connection flame mouths（9）, a gas port（11）Latus rectum size be 20-30mm, the coal gas
Connection flame mouth（9）Per 7 for one group corresponding to air connection flame mouth（10）, each mouth aperture pitch 25-30mm, aperture
Size is 3-5mm, the secondary gas port（13）Latus rectum size be 25-35mm, the secondary gas port（13）Axis
Plane and the coal gas flame tube interconnector that line is formed（14）The plane that upper all spout axis are formed is into 25 ° of angles.
6. the device according to any one of claim 1-3, it is characterised in that each combustion chamber is designed with a point
Burn mouth, the igniter burner（18）With the igniter burner sleeve pipe（19）It is fastened by bolts installation, the igniter burner
（18）On be respectively disposed with cooling of electrode wind interface, gas for ignition interface and igniting air interface, igniter burner load be 0.5-
1kw, jet size is 40-45mm, and combustion flame length is 150-200mm.
7. device according to claim 6, it is characterised in that the igniter burner sleeve pipe（19）Center line it is described at least
In the plane of three radiant tube flange axis formation, and perpendicular to radiant tube flange axis, the igniter burner set
Pipe（19）Center line and the coal gas flame tube interconnector（14）With secondary gas pipe（15）Centreline spacing in 130-150mm.
8. the device according to any one of claim 1-3, it is characterised in that the radiant tube horizontal mode is positioned over stove
Portion, an or vertical point row in vivo is arranged in furnace interior, also or in " product " font arrangement.
9. the device according to any one of claim 1-3, it is characterised in that the metal flange and the cross valve it
Between be provided with valve, for controlling the break-make of air in burner；The coal gas flame tube interconnector（14）With cutting valve soon.
10. the device according to any one of claim 1-3, it is characterised in that the heat storage（4）Size be
150x100x100mm, inner passage adopts cellular aperture, and orifice size is 2-4mm, every piece of heat storage（4）Honeycomb is little
Hole is interconnected inside burner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166444.8A CN106642111A (en) | 2016-12-16 | 2016-12-16 | Fractional combustion heat accumulating type radiant tube combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611166444.8A CN106642111A (en) | 2016-12-16 | 2016-12-16 | Fractional combustion heat accumulating type radiant tube combustion device |
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| Publication Number | Publication Date |
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| CN106642111A true CN106642111A (en) | 2017-05-10 |
Family
ID=58822621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611166444.8A Pending CN106642111A (en) | 2016-12-16 | 2016-12-16 | Fractional combustion heat accumulating type radiant tube combustion device |
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Citations (7)
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|---|---|---|---|---|
| US4651714A (en) * | 1984-10-18 | 1987-03-24 | A. D. Smith Corporation | High efficiency water heater |
| CN1974805A (en) * | 2006-12-18 | 2007-06-06 | 北京科技大学 | Metal magnesium reducing furnace with internally heating radiation tube |
| CN201184696Y (en) * | 2008-03-14 | 2009-01-21 | 江苏焱鑫科技集团有限公司 | Tube type heating stove |
| CN102363730A (en) * | 2011-01-10 | 2012-02-29 | 张卫军 | Oil shale dry-wet mixing method dry distillation technology and heat accumulating type external firing shale oven |
| CN103968385A (en) * | 2014-05-24 | 2014-08-06 | 北京首钢国际工程技术有限公司 | Upper-lower combination type dual-heat storage burner with embedded burner blocks |
| CN204005997U (en) * | 2014-07-20 | 2014-12-10 | 江苏南山冶金机械制造有限公司 | Honeycomb fashion radiant tube |
| CN206600801U (en) * | 2016-12-16 | 2017-10-31 | 神雾科技集团股份有限公司 | A kind of fractional combustion thermal-storage burning device utilizing radiant tube |
-
2016
- 2016-12-16 CN CN201611166444.8A patent/CN106642111A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651714A (en) * | 1984-10-18 | 1987-03-24 | A. D. Smith Corporation | High efficiency water heater |
| CN1974805A (en) * | 2006-12-18 | 2007-06-06 | 北京科技大学 | Metal magnesium reducing furnace with internally heating radiation tube |
| CN201184696Y (en) * | 2008-03-14 | 2009-01-21 | 江苏焱鑫科技集团有限公司 | Tube type heating stove |
| CN102363730A (en) * | 2011-01-10 | 2012-02-29 | 张卫军 | Oil shale dry-wet mixing method dry distillation technology and heat accumulating type external firing shale oven |
| CN103968385A (en) * | 2014-05-24 | 2014-08-06 | 北京首钢国际工程技术有限公司 | Upper-lower combination type dual-heat storage burner with embedded burner blocks |
| CN204005997U (en) * | 2014-07-20 | 2014-12-10 | 江苏南山冶金机械制造有限公司 | Honeycomb fashion radiant tube |
| CN206600801U (en) * | 2016-12-16 | 2017-10-31 | 神雾科技集团股份有限公司 | A kind of fractional combustion thermal-storage burning device utilizing radiant tube |
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