CN209541411U - A kind of Two-cuff Technique roller hearth type heating furnace - Google Patents
A kind of Two-cuff Technique roller hearth type heating furnace Download PDFInfo
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- CN209541411U CN209541411U CN201822146050.7U CN201822146050U CN209541411U CN 209541411 U CN209541411 U CN 209541411U CN 201822146050 U CN201822146050 U CN 201822146050U CN 209541411 U CN209541411 U CN 209541411U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003034 coal gas Substances 0.000 claims abstract description 86
- 238000005338 heat storage Methods 0.000 claims abstract description 74
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 66
- 239000000779 smoke Substances 0.000 claims description 25
- 239000003245 coal Substances 0.000 claims description 17
- 238000009825 accumulation Methods 0.000 claims description 15
- 235000019504 cigarettes Nutrition 0.000 claims description 13
- 238000002791 soaking Methods 0.000 claims description 13
- 239000004071 soot Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims 1
- 238000005096 rolling process Methods 0.000 abstract description 10
- 239000002918 waste heat Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 27
- 238000004519 manufacturing process Methods 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 8
- 230000001172 regenerating effect Effects 0.000 description 8
- 238000009749 continuous casting Methods 0.000 description 7
- 238000003801 milling Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 6
- 239000004484 Briquette Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
The utility model relates to a kind of Two-cuff Technique roller hearth type heating furnaces, belong to metallurgy industry heater for rolling steel technical field.Technical solution is: the side A and the side B of roller bottom furnace body (1) are respectively equipped with multiple heat-accumulating burners being evenly arranged, the heat-accumulating burner includes an air heat storage tank (17) and a coal gas heat storage tank (11), one burner partition (14) is set between air heat storage tank (17) and coal gas heat storage tank (11), in one end of air heat storage tank (17) and coal gas heat storage tank (11), burner block (21) are set, burner turns to be equipped with premix chamber in (21), coal gas ignition spout (12) and air ignition spout (15) and gas-fired spout (13) and air burning spout (16) are respectively set in the premix chamber of burner block (21)；The beneficial effects of the utility model are: can waste heat in whole recovered flue gas, the exhaust temperature of final flue gas is at 150 DEG C hereinafter, improving the thermal efficiency of heating furnace.
Description
Technical field
The utility model relates to a kind of Two-cuff Technique roller hearth type heating furnaces, belong to metallurgy industry heater for rolling steel technical field.
Background technique
Thin slab continuous casting and rolling production technology is a kind of short route broad hot strip production technology, has been widely used in heat
Rolling strip production field, equipment composition includes thin-slab caster, roller hearth type heating furnace and thick, finishing mill, coiling machine etc.,
Between continuous casting and milling train, main function is heating slab and is mill roll, processing accident etc. middle roller hearth type heating furnace
Certain buffer time is provided when abnormal conditions.Therefore, the structure and production technology of this roller bottom furnace are different from normal reheating furnace:
Roller bottom furnace length is about 200-300 meters, and 2 meters of inner width or so, fire box temperature is controlled at 1170~1250 DEG C, and continuous casting billet is poured from continuous casting
After the completion of note, just immediately enters and heated in the furnace of roller bottom, and according to the condition of production of milling train, it at any time can be by the slab after heating
It is sent to mill milling, residence time of the slab in the furnace of roller bottom and continuous casting and the production kind of milling train, rhythm of production are closely related,
Generally between 10~50 minutes, to adapt to the production of continuous casting with milling train difference rhythm, qualified board briquette and enough slow
Rush one of the necessary condition that the time is sheet billet continuous casting and rolling production line steady production.
In sheet billet production technology, the length of slab is generally at 25~35 meters, but in half production without a head, slab length
It can reach 220 meters or more.For the stabilization for stablizing milling train production and finished strip performance, when carrying out Rolling production, steel rolling process
It is required that entering the slab temperature difference≤10 DEG C of mill milling, in the same temperature controlled section, furnace each section of temperature difference in roller bottom also requires to control
Within 10 DEG C, based on the special technique requirement of such roller bottom furnace, it is exactly to protect other than bringing-up section that roller bottom furnace, which does not set preheating section,
Temperature section, the high-temperature flue gas for generation of burning are directly discharged to flue after diluting air cooling, although passing through preheated air and coal
Gas can recycle the heat of part of smoke, but the thermal efficiency of roller bottom furnace is also only 15~20%, be far below normal reheating furnace
50% thermal efficiency.
Patent 201010110775.6 describes a kind of regenerative combustion technology of roller bottom furnace, which adopts on the furnace of roller bottom
With the regenerative combustion technology of air single regenerative, common burner is substituted with heat-accumulating burner, part high-temperature flue gas is recycled
It utilizes, meets requirement of the steel rolling process to board briquette harshness, while can also solve that existing roller bottom furnace efficiency of combustion is low to ask
Topic, smog discharge temperature are lower than 150 DEG C, and energy-saving effect is significant.But the patent only to air carry out accumulation of heat, coal gas not accumulation of heat,
It burns in the high-temperature flue gas generated, still some flue gas can directly drain, and the sensible heat in flue gas is not returned adequately
It receives and utilizes, in addition fuel still uses the mixed gas of high heating value, for the enterprise of coke-stove gas resource anxiety, the technology
Using having difficulties.
Currently, heater for rolling steel generallys use regenerative combustion technology in smelter, which can be used metallurgical enterprise
The blast furnace gas or coal gas of converter of the low heat value of industry recycling do fuel, to reduce production cost, which is produced using burning
Raw high-temp waste gas directly heats heat storage, then reheats air with heat storage or coal gas, which can be by air or coals
Gas is directly preheated to 1000 DEG C, and the exhaust gas temperature of flue gas be then reduced to 150 DEG C hereinafter, to improve the thermal efficiency of heating furnace,
Usual heat storage type combustion is carried out between the heat-accumulating burner or two groups of heat-accumulating burners of two same performances, is burnt when one
Mouth burn when, another burner is then discharged fume, two ways alternately, since the regenerator temperature of air or coal gas is attained by
1000 DEG C, to reduce the security risk in use, in heat-accumulation combustion, all use outer mixed combustion system, i.e. air and coal gas point
Accumulation of heat is not carried out by different heat storage tanks, is then sprayed into heating furnace by respective air and coal gas spray orifice, in heating furnace
It is inside mixed, and completes combustion process, since the mixing of coal gas and air is a physical diffusion phenomenon, when needing certain
Between could complete, this process is more many slowly than combustion reaction process, and therefore, heat storage type combustion speed is slow, and the length of flame is partially long, right
For less than 2 meters roller bottom furnaces of inner width, common heat storage type combustion mode can be such that flame is directly sprayed on the burner of smoke evacuation, not
The coal gas of completely burned can be directly entered in the heat storage tank of the heat-accumulating burner of smoke evacuation, influence the normal accumulation of heat of heat-accumulating burner
Journey causes gas utilization rate to decline, or even safety accident occurs.
Heat accumulating type roller bottom furnace transmits steel billet using furnace roller, and furnace roller needs to regularly replace maintenance, and roll change tool is C-shaped hook, mesh
Preceding existing heat-accumulating burner is bulky, and other than burner body, three-way diverter valve, there are also air, coal gas, empty cigarette and coal smokes
A variety of medium pipelines such as pipeline will affect replacing furnace roller if directly arranging a large amount of heat-accumulating burner in roller bottom furnace two sides.
Utility model content
The utility model aim is to provide a kind of Two-cuff Technique roller hearth type heating furnace, can waste heat in whole recovered flue gas,
The thermal efficiency of heating furnace is improved, and is meeting the maintenance that will not influence roller bottom furnace while slab heating temperature requirement, is solved
The problem of background technique.
The technical solution of the utility model is:
A kind of Two-cuff Technique roller hearth type heating furnace includes roller bottom furnace body, air pipeline, air three-way valve, empty pipe, coal
Feed channel, empty cigarette air-introduced machine, air-blaster, coal gas heat storage tank, coal gas ignition spout, gas-fired spout, burner partition, sky
Gas igniting spout, air burning spout, air heat storage tank, gas three-way valve, soot pipe, coal smoke air-introduced machine and burner block, roller
Bottom furnace body includes bringing-up section and soaking zone, and the side of roller bottom furnace body is the side A, and the other side of roller bottom furnace body is the side B, roller bottom
The side A and the side B of furnace body are respectively equipped with multiple heat-accumulating burners being evenly arranged, the heat-accumulating burner and B of the roller bottom side furnace body A
The heat-accumulating burner interlaced arrangement of side；The heat-accumulating burner includes an air heat storage tank and a coal gas heat storage tank, in sky
One burner partition is set between gas heat storage tank and coal gas heat storage tank, is arranged in one end of air heat storage tank and coal gas heat storage tank and burns
Mouth brick, the burner block are arranged in furnace wall, and premix chamber is equipped in burner block, coal gas point is respectively set in the premix chamber of burner block
Fire-fighting mouth and air ignition spout and gas-fired spout and air burning spout；The air heat storage tank passes through air threeway
Valve is connect with air pipeline and air-blaster and empty pipe and empty cigarette air-introduced machine respectively, air pipeline, air three-way valve,
Empty pipe, empty cigarette air-introduced machine, air-blaster and air heat storage tank form air hold over system；The coal gas heat storage tank passes through
Gas three-way valve is connect with gas piping and soot pipe and coal smoke air-introduced machine respectively, gas piping, gas three-way valve, coal smoke
Pipeline, coal smoke air-introduced machine and coal gas heat storage tank form coal gas hold over system.
The gas three-way valve in air three-way valve and coal gas hold over system in the air hold over system is divided into control roller
The air three-way valve and gas three-way valve and the control side roller bottom furnace body B heat-accumulating burner of the bottom side furnace body A heat-accumulating burner
Air three-way valve and gas three-way valve, control the side roller bottom furnace body A heat-accumulating burner air three-way valve and gas three-way valve
And the air three-way valve and gas three-way valve of the control side roller bottom furnace body B heat-accumulating burner are arranged in the B of roller bottom furnace body
Side.
The side A of roller bottom furnace body is changing side, and the side B of roller bottom furnace body is non-changing side.
Air three-way valve in the air hold over system is identical with the structure of the gas three-way valve in coal gas hold over system,
Air or gas inlet valve plate and flue gas valve plate are respectively equipped in air three-way valve and gas three-way valve.
Premix chamber in the burner block is taper, and the opening angle of taper is γ.
Between the center line of coal gas ignition spout in the premix chamber of the burner block and the center line of air ignition spout
Arranged crosswise, the angle between the center line of coal gas ignition spout and the center line of air ignition spout is α；Gas-fired spout
Center line and air burning spout center line between arranged crosswise, the center line and air burning spout of gas-fired spout
Center line between angle be β.
The heat-accumulating burner of the roller bottom side furnace body A and the side B is divided into two groups, every group of three heat-accumulating burners, and one group
It is arranged in bringing-up section, another group is arranged in soaking zone.
Burner partition between the air heat storage tank and coal gas heat storage tank is made of heat-resisting steel sheet and plate S304, steel plate two sides point
Other pouring fireproof material.
Fuel in the utility model uses the blast furnace gas or coal gas of converter of low heat value, and bringing-up section mainly completes slab
Heating, fire box temperature is usually between 1200~1250 DEG C, and soaking zone is then that board briquette is remained to certain temperature,
Fire box temperature is between 1160~1180 DEG C.Bringing-up section and soaking zone all use Two-cuff Technique combustion system.Pass through heat storage type point
Not by the temperature accumulation of heat of coal gas and air to 1000 DEG C or so, and after-combustion is mixed in burner block, heat-accumulating burner when burning
Accumulation of heat, smoke evacuation alternately, finally realize heating of the roller bottom furnace to steel billet.
The beneficial effects of the utility model are: fuel uses the blast furnace gas or coal gas of converter of low heat value, combustion system is
Air and coal gas Two-cuff Technique, can waste heat in whole recovered flue gas, the exhaust temperature of final flue gas is at 150 DEG C hereinafter, improving
The thermal efficiency of heating furnace.And the heating efficiency of roller bottom furnace and the heating quality of slab can be guaranteed, and will not influence existing
There is the maintenance etc. of roller bottom furnace.
Detailed description of the invention
Fig. 1 is the utility model structure top view；
Fig. 2 is the utility model cross-section diagram；
Fig. 3 is Two-cuff Technique nozzle structure schematic diagram；
Fig. 4 is triple valve structural schematic diagram；
Fig. 5 is triple valve F-F sectional view；
In figure: roller bottom furnace body 1, roll change C-shaped hook 2, furnace roller 3, slab 4, air pipeline 5, air three-way valve 6, empty smoke pipe
Road 7, gas piping 8, empty cigarette air-introduced machine 9, air-blaster 10, coal gas heat storage tank 11, coal gas ignition spout 12, gas-fired spray
Mouth 13, burner partition 14, air ignition spout 15, air burning spout 16, air heat storage tank 17, gas three-way valve 18, coal smoke
Pipeline 19, coal smoke air-introduced machine 20, burner block 21, air or gas inlet valve plate 22, flue gas valve plate 23.
Specific embodiment
Below in conjunction with attached drawing, by example, the utility model is described in further detail.
Referring to attached drawing 1 ~ 5, a kind of Two-cuff Technique roller hearth type heating furnace includes roller bottom furnace body 1, air pipeline 5, air threeway
Valve 6, empty pipe 7, gas piping 8, empty cigarette air-introduced machine 9, air-blaster 10, coal gas heat storage tank 11, coal gas ignition spout 12,
Gas-fired spout 13, burner partition 14, air ignition spout 15, air burning spout 16, air heat storage tank 17, gas three-way
Valve 18, soot pipe 19, coal smoke air-introduced machine 20 and burner block 21, roller bottom furnace body 1 include bringing-up section and soaking zone, roller bottom furnace furnace
The side of body 1 is the side A, and the other side of roller bottom furnace body 1 is the side B, and the side A and the side B of roller bottom furnace body 1 are respectively equipped with multiple uniform
The heat-accumulating burner of arrangement, the heat-accumulating burner of the roller bottom side furnace body 1A and the heat-accumulating burner interlaced arrangement of the side B；The accumulation of heat
Formula burner includes an air heat storage tank 17 and a coal gas heat storage tank 11, between air heat storage tank 17 and coal gas heat storage tank 11
One burner partition 14 is set, burner block 21, the burner block are set in one end of air heat storage tank 17 and coal gas heat storage tank 11
21 are arranged in furnace wall, and premix chamber is equipped in burner block 21, coal gas ignition spout 12 is respectively set in the premix chamber of burner block 21
With air ignition spout 15 and gas-fired spout 13 and air burning spout 16；The air heat storage tank 17 passes through air three
Port valve 6 is connect with air pipeline 5 and air-blaster 10 and empty pipe 7 and empty cigarette air-introduced machine 9 respectively, air pipeline 5, sky
Gas triple valve 6, empty pipe 7, empty cigarette air-introduced machine 9, air-blaster 10 and air heat storage tank 17 form air hold over system；Institute
It states coal gas heat storage tank 11 and is connected respectively with gas piping 8 and soot pipe 19 and coal smoke air-introduced machine 20 by gas three-way valve 18
It connects, gas piping 8, gas three-way valve 18, soot pipe 19, coal smoke air-introduced machine 20 and coal gas heat storage tank 11 form coal gas accumulation of heat system
System.
In the present embodiment, referring to attached drawing 1, roller bottom furnace includes bringing-up section C and soaking zone D, and the side A of roller bottom furnace body 1 is
Changing side, the side B are non-changing side, and the heat-accumulating burner of the roller bottom side furnace body 1A and the side B is divided into two groups, every group of three heat accumulating types
Burner, one group is arranged in bringing-up section, and another group is arranged in soaking zone.The ability of the heat-accumulating burner of bringing-up section C and soaking zone D is not
Together, the power of bringing-up section C and the single heat-accumulating burner of soaking zone D is respectively 442KW and 151KW, and fuel uses 5024KJ/Nm3
Coal gas of converter, the coal gas and air mass flow, coal gas and air heat storage that can calculate bringing-up section and soaking zone burner accordingly uses
Amount, and the critical technical parameters such as volume for designing coal gas heat storage tank 11 and air heat storage tank 17 accordingly.
Roller bottom furnace is made of roller bottom furnace body 1, furnace roller 3 and air hold over system and coal gas hold over system, and slab 4 is in roller
Run on the furnace roller 3 of bottom furnace, bringing-up section mainly completes the heating of slab, fire box temperature usually between 1200~1250 DEG C, and
Soaking zone is then that board briquette is remained to certain temperature, and fire box temperature is between 1160~1180 DEG C.
Referring to attached drawing 1,2, air-blaster 10, air pipeline 5, air three-way valve 6, empty pipe 7, air heat storage tank 17
With the equal composition air hold over system of empty cigarette air-introduced machine 9, gas piping 8, gas three-way valve 18, soot pipe 19, coal smoke air-introduced machine
20 and coal gas heat storage tank 11 form coal gas hold over system.
Referring to attached drawing 3, heat-accumulating burner includes 11 groups of an air regenerative burner case 17 and coal gas heat-accumulating burner case,
One partition 14 is set between air heat storage tank 17 and coal gas heat storage tank 11, and partition 14 is made of heat resisting steel S304, steel plate two sides
Pouring fireproof material respectively prevents air and coal gas in heat storage tank internal short-circuit, it is existing that burning occurs for separating two heat storage tanks
As.
In the front end of air heat storage tank 17 and coal gas heat storage tank 11, burner block 21 is set, burner block 21 is arranged in furnace wall,
And air heat storage tank 17 and coal gas heat storage tank 11 are designed to external pulling type, are arranged into outside furnace wall, and premix chamber is set in burner block 21, premix
Chamber is cone, and opening angle γ is related with calorific value of gas, and the more low then opening angle γ of calorific value is smaller；The premix of burner block 21
It is intracavitary that coal gas ignition spout 12 and air ignition spout 15 and gas-fired spout 13 and air burning spout 16 is respectively set,
Arranged crosswise between the center line of coal gas ignition spout 12 in premix chamber and the center line of air ignition spout 15, angle are
α；Arranged crosswise between the center line of gas-fired spout 13 and the center line of air burning spout 16, angle β.Work as coal gas
When being sprayed respectively from coal gas ignition spout 12 and air ignition spout 15 with air, with angle of cut α in the premix chamber of burner block 21
Mixing, and starts to burn, in this, as incendiary source, by the coal gas sprayed in gas-fired spout 13 and air burning spout 16 and
Air is lighted, and the coal gas and the air angle of cut sprayed from gas-fired spout 13 and air burning spout 16 is β, reasonable by designing
β angle control the length of flame, prevent flame from directly washing away opposite furnace wall or be directly sprayed onto the burner that opposite is being discharged fume
The inside, the principle that β is set up at angle are to guarantee that combustion air and coal gas are mixed and burned at furnace wide 1/2.
Air and coal gas are fired from coal gas ignition spout 12 and air ignition spout 15 and gas-fired spout 13 and air
16 high speed ejection of spout is burnt, spouting velocity reaches 15~20m/s, for the 2 times or more of conventional burner spouting velocity, it is therefore an objective to right
Air and coal gas strengthen mixing, guarantee combustion efficiency, while can be realized flame flow under high-velocity combustion to the volume of combustion product
It inhales, plays the role of dilute combustion region oxygen concentration, reduces NOx in combustion product.
Heat storage type combustion is that air or coal gas are carried out accumulation of heat, is carried out between two groups of pairs of heat-accumulating burners, when the side A
When heat-accumulating burner burns, then the side B heat-accumulating burner is discharged fume accumulation of heat, after a cycle (40~50 seconds), two sides heat-accumulating burner
State exchange, the side A heat-accumulating burner smoke evacuation, and the side B heat-accumulating burner burn.
The regenerative burner burning state of 1 side roll change A of roller bottom furnace body and the side non-roll change B is by air three-way valve 6 and coal gas
Triple valve 18 controls respectively.Air three-way valve 6 and gas three-way valve 18 are divided into a, b two parts, are arranged in the side non-roll change B, and three
Port valve a controls the accumulation of heat and combustion process of the side roll change A heat-accumulating burner, and triple valve b then controls the side non-roll change B heat-accumulating burner
Accumulation of heat and combustion process.
Referring to attached drawing 4,5, air three-way valve 6 is identical with the structure of gas three-way valve 18, arrow P and arrow Y difference in figure
The airintake direction of air or coal gas and the emission direction of flue gas or exhaust gas are represented, is respectively equipped with air or gas inlet in triple valve
Valve plate 22 and flue gas valve plate 23.
Combustion process is as follows: when the side roll change A is in combustion state, triple valve a(includes air three-way valve and gas three-way
Valve) air or gas inlet valve plate 22 open, smoke evacuation valve plate 23 is closed, and air and coal gas enter burning in the furnace of roller bottom, rather than
The side roll change B is then in smoke evacuation state, and triple valve b(includes air three-way valve and gas three-way valve) air or gas inlet valve plate
22 close, and smoke evacuation valve plate 23 is opened.The burning of next cycle two sides heat-accumulating burner and heat storage state exchange, the side roll change A row
Cigarette triple valve a(includes air three-way valve and gas three-way valve) air or gas inlet valve plate 22 close, smoke evacuation valve plate 23 beat
It opens, burning waste gas enters accumulation of heat in burner, rather than the side roll change B then starts to burn, and triple valve b(includes air three-way valve and coal gas
Triple valve) air or gas inlet valve plate 22 open, smoke evacuation valve plate 23 close.The opening and closing of two sides heat-accumulating burner is synchronous to be carried out,
Combustion process is all controlled by computer.
Referring to attached drawing 1,2, heat-accumulating burner and necessary air pipeline 5 and gas piping 8 are only arranged in the side roll change A, and
The triple valve of the control side roll change A heat-accumulating burner is arranged into the side non-roll change B, merges with the triple valve of the side non-roll change B, this
When sample carries out sending 3 operation of furnace roller using roll change C-shaped hook 2, it is only necessary to avoid coal gas heat storage tank 11 or air heat storage tank 17, and
The side non-roll change B in addition to arrangement air regenerative burner 17 and gas regenerative burner 11, air pipeline 5 and gas piping 8 other than,
Air three-way valve 6 and gas three-way valve 18 are also arranged, but this arrangement will not influence the roller replacing operation of roller bottom furnace.
The double heat storage type roller hearth furnace does fuel with the blast furnace gas or coal gas of converter of low heat value, meets steel rolling process
It is required that reducing the energy consumption of roller bottom furnace, and reduce the NOx in combustion product.
Claims (8)
1. a kind of Two-cuff Technique roller hearth type heating furnace, it is characterised in that: include roller bottom furnace body (1), air pipeline (5), air three
Port valve (6), empty pipe (7), gas piping (8), empty cigarette air-introduced machine (9), air-blaster (10), coal gas heat storage tank (11),
Coal gas ignition spout (12), gas-fired spout (13), burner partition (14), air ignition spout (15), air burning spout
(16), air heat storage tank (17), gas three-way valve (18), soot pipe (19), coal smoke air-introduced machine (20) and burner block (21), roller
Bottom furnace body (1) includes bringing-up section and soaking zone, and the side of roller bottom furnace body (1) is the side A, the other side of roller bottom furnace body (1)
For the side B, the side A and the side B of roller bottom furnace body (1) are respectively equipped with multiple heat-accumulating burners being evenly arranged, roller bottom furnace body (1) A
The heat-accumulating burner of side and the heat-accumulating burner interlaced arrangement of the side B；The heat-accumulating burner includes an air heat storage tank (17)
With a coal gas heat storage tank (11), a burner partition is set between air heat storage tank (17) and coal gas heat storage tank (11)
(14), burner block (21) are set in one end of air heat storage tank (17) and coal gas heat storage tank (11), burner block (21) arrangement
In furnace wall, it is equipped with premix chamber in burner block (21), coal gas ignition spout (12) are respectively set in the premix chamber of burner block (21)
With air ignition spout (15) and gas-fired spout (13) and air burning spout (16)；The air heat storage tank (17) is logical
Cross air three-way valve (6) respectively with air pipeline (5) and air-blaster (10) and empty pipe (7) and empty cigarette air-introduced machine
(9) connect, air pipeline (5), air three-way valve (6), empty pipe (7), empty cigarette air-introduced machine (9), air-blaster (10) and
Air heat storage tank (17) forms air hold over system；The coal gas heat storage tank (11) by gas three-way valve (18) respectively with coal gas
Pipeline (8) and soot pipe (19) and coal smoke air-introduced machine (20) connection, gas piping (8), gas three-way valve (18), coal smoke pipe
Road (19), coal smoke air-introduced machine (20) and coal gas heat storage tank (11) form coal gas hold over system.
2. a kind of Two-cuff Technique roller hearth type heating furnace according to claim 1, it is characterised in that: in the air hold over system
Air three-way valve (6) and coal gas hold over system in gas three-way valve (18) include control roller bottom furnace body (1) side A heat accumulating type
The air three-way valve and gas three-way valve of burner and control roller bottom furnace body (1) side B heat-accumulating burner air three-way valve and
Gas three-way valve, the air three-way valve and gas three-way valve of control roller bottom furnace body (1) side A heat-accumulating burner and control roller bottom
The air three-way valve and gas three-way valve of furnace body (1) side B heat-accumulating burner are arranged in the side B of roller bottom furnace body (1).
3. a kind of Two-cuff Technique roller hearth type heating furnace according to claim 1 or 2, it is characterised in that: roller bottom furnace body
(1) the side A is changing side, and the side B of roller bottom furnace body (1) is non-changing side.
4. a kind of Two-cuff Technique roller hearth type heating furnace according to claim 1 or 2, it is characterised in that: air accumulation of heat system
Air three-way valve (6) in system is identical with the structure of gas three-way valve (18) in coal gas hold over system, air three-way valve (6) and
Air or gas inlet valve plate (22) and flue gas valve plate (23) are respectively equipped in gas three-way valve (18).
5. a kind of Two-cuff Technique roller hearth type heating furnace according to claim 1, it is characterised in that: in the burner block (21)
Premix chamber is taper, and the opening angle of taper is γ.
6. a kind of Two-cuff Technique roller hearth type heating furnace according to claim 1 or 5, it is characterised in that: described, burner block (21)
Premix chamber in the center line of coal gas ignition spout (12) and the center line of air ignition spout (15) between arranged crosswise, coal
The angle that gas is lighted a fire between the center line of spout (12) and the center line of air ignition spout (15) is α；Gas-fired spout
(13) arranged crosswise between the center line of center line and air burning spout (16), the center line of gas-fired spout (13) and
Angle between the center line of air burning spout (16) is β.
7. a kind of Two-cuff Technique roller hearth type heating furnace according to claim 1, it is characterised in that: the roller bottom furnace body (1) A
The heat-accumulating burner of side and the side B is divided into two groups, and every group of three heat-accumulating burners, one group is arranged in bringing-up section, another group of arrangement
In soaking zone.
8. a kind of Two-cuff Technique roller hearth type heating furnace according to claim 1, it is characterised in that: the air heat storage tank (17)
Burner partition (14) between coal gas heat storage tank (11) is made of heat-resisting steel sheet and plate S304, and steel plate two sides are poured fire proofed wood respectively
Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822146050.7U CN209541411U (en) | 2018-12-20 | 2018-12-20 | A kind of Two-cuff Technique roller hearth type heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822146050.7U CN209541411U (en) | 2018-12-20 | 2018-12-20 | A kind of Two-cuff Technique roller hearth type heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209541411U true CN209541411U (en) | 2019-10-25 |
Family
ID=68265159
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822146050.7U Withdrawn - After Issue CN209541411U (en) | 2018-12-20 | 2018-12-20 | A kind of Two-cuff Technique roller hearth type heating furnace |
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| Country | Link |
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| CN (1) | CN209541411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631574A (en) * | 2018-12-20 | 2019-04-16 | 唐山钢铁集团有限责任公司 | A kind of Two-cuff Technique roller hearth type heating furnace |
-
2018
- 2018-12-20 CN CN201822146050.7U patent/CN209541411U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631574A (en) * | 2018-12-20 | 2019-04-16 | 唐山钢铁集团有限责任公司 | A kind of Two-cuff Technique roller hearth type heating furnace |
| CN109631574B (en) * | 2018-12-20 | 2024-01-16 | 唐山钢铁集团有限责任公司 | Double heat accumulating roller bottom type heating furnace |
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