CN206131733U - Sintering ignition - Google Patents

Sintering ignition Download PDF

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Publication number
CN206131733U
CN206131733U CN201621159026.1U CN201621159026U CN206131733U CN 206131733 U CN206131733 U CN 206131733U CN 201621159026 U CN201621159026 U CN 201621159026U CN 206131733 U CN206131733 U CN 206131733U
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China
Prior art keywords
ignition
burner
sintering
gas
furnace
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CN201621159026.1U
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Inventor
张永中
张晓萍
曹建民
刘自民
李顺祥
周宗林
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Maanshan Iron and Steel Co Ltd
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Maanshan Iron and Steel Co Ltd
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Abstract

The utility model discloses a sintering ignition belongs to the blast furnace ironmaking field. The utility model discloses an ignition includes ignition furnace, coal gas intake pipe and hot -blast intake pipe, has arranged one row of nozzle on the ignition section furnace roof of ignition furnace, and middle nozzle is the inline, and the nozzle that is close to sintering machine platform truck both sides is the arc shooting, and every nozzle is linked together respectively with coal gas intake pipe and hot -blast intake pipe, before the section of igniteing, be provided with the isolation ward on the furnace roof of rear end respectively, this isolation ward is linked together with hot -blast intake pipe, the ignition furnace bottom is provided with bellows, and the bellows that wherein are located under the nozzle are provided with the spoiler. The utility model discloses both can optimize ignition fuel in the distribution of whole sintering charge level, balanced sintering machine is sintering material ignition quality everywhere, improves sintering mineral products quality, can improve the ignition effect again, reduces the consumption of ignition fuel, has reached energy -concerving and environment -protective production technology requirement.

Description

A kind of sintering ignition device
Technical field
The utility model is related to technical field of blast furnace ironmaking, more particularly, it relates to a kind of sintering ignition device.
Background technology
Sintering circuit is the big power consumer of iron and steel production, mainly including solid burnup, coal gas burnup, wherein power consumption, solid Fuel consumption accounts for 75%, and power consumption accounts for 15%, and gas consumption accounts for 6%.In sintering process, the purpose of igniting is to provide mixed Close the enough heat in material top layer so as in solid fuel ignition, while making high temperature of the top layer compound in igniter The lower dry, decarburization of flue gas effect and sintering, and sintering process is persistently carried out from top to bottom by means of exhausting.
The construction and form of igniter affects very big to the quality of ignition operation, and sintering mineral products matter is directly affects then Amount and its energy resource consumption.Existing sintering ignition device is typically made up of igniting section and soaking zone two parts, igniting section and insulation Isolated by a refractory brickwork between section.But the high-temperature flue gas of section of lighting a fire during actual production are easily lost in a large number insulation Section, causes unnecessary heat loss, ultimately increases gas consumption, improves enterprise's production capacity.Jing is retrieved, application publication number For " CN102798291A ", the patent of " CN104807326A ", propose in igniting section front end or in igniting section and insulation One flexible gas curtain wall is set between section, makes to form separate space between igniting front end or igniting section and soaking zone Ignition furnace.Gas curtain wall in above-mentioned application case is formed by the blower blows cold air on sintering ignition furnace, Although this kind of gas curtain wall solves the problems, such as to a certain extent heat smoke convection current between section and soaking zone of lighting a fire, due to drum The gas for blowing is cold air, unavoidably reduces charge level temperature, loses partial heat, and air-flow is susceptible to pulsation, causes The gas curtain wall heterogeneity formed on charge level, isolation effect is not notable, it is still necessary to further optimization.
The layout design of sintering ignition furnace burner there is also considerable influence to the quality of ignition operation, burner current first Structure design prevents the efficiency of combustion and burning velocity of coal gas from effectively improving, and energy-saving effect is not notable;Secondly, existing sintering The burner of ignition furnace mostly is two row or multi-row, is all arranged in the mutually level same level of charge level, sintering pallet Edge effect be easily caused that sintering pallet both sides heat supplies is not enough, the carbon on part bed of material surface is difficult to light, and sintering deposit Along the inhomogenous problem of chassis width quality.Jing is retrieved, during the application case of the patent No. " ZL2009200200178 " is disclosed Between burner be arranged in a linear, near the curved arrangement of burner at two ends simultaneously, it is ensured that sintering feed is reached along chassis width The scheme of terminal.Application publication number is then proposed for the patent of " CN104807326A " and set up more than a row in igniting section furnace roof Standby burner, standby burner burner more normal than section of lighting a fire is little with a distance from normal charge level, and standby burner is used when charge level declines, and reaches Charge level change is adapted to burner, optimum igniting distance is remained, is reduced the scheme of gas consumption.But the standby burner exists for a long time Burner hearth high temperature is toasted, and is easily damaged, and the conversion of normal burner and standby burner use it is relatively complicated.The patent No. " ZL892092181 " discloses a kind of curtain-type igniter, and the length of flame can be borrowed once, the proportion adjustment of secondary air flow, flame The regulation of length is Normal practice in sintering ignition furnace industry, but facts have proved that the distance that flame can be elongated is shorter, and Gas consumption is high.
In sum, although current sintering ignition device species is various, design different, generally existing ignition quality is not Height, causes to sinter the deficiency that energy resource consumption is higher, Sintering Operation Index is limited then, how to effectively improve Sintering Operation Index simultaneously Rationally reducing its energy resource consumption becomes the Main way of development in industry.
Utility model content
1. the utility model technical problem to be solved
The purpose of this utility model is for the deficiencies in the prior art, there is provided a kind of sintering ignition device, this The igniter of utility model can optimize distribution of the igniter fuel in whole sintering charge level, and contribute to reducing disappearing for igniter fuel Consumption, the ignition method carried out using the igniter can then significantly improve ignition results, the sintering feed igniting everywhere of balanced sintering machine Quality, so as to improve Sintering Operation Index, and reaches the manufacturing technique requirent of energy-conserving and environment-protective.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the utility model is provided is:
A kind of sintering ignition device of the present utility model, including ignition furnace, also including gas inlet pipe and hot blast air inlet pipe, Row's burner, each burner and gas inlet pipe and hot blast air inlet pipe difference phase are provided with the igniting section furnace roof of the ignition furnace Connection;Isolation ward is provided with the front and back ends of the igniting furnace igniting section furnace roof, the isolation ward is connected with hot blast air inlet pipe It is logical;
The igniting furnace bottom is provided with bellows, wherein being provided with spoiler in the bellows immediately below burner.
Further, above-mentioned row's burner is distributed in middle part straight line, both sides camber line, and the linear type of burner at middle part is uniform It is spaced, near the curved arrangement of burner of sintering pallet both sides, and both sides burner is apart from the highly little of sintering feed surface In middle burner apart from sintering feed surface height.
Further, the bellows are infundibulate, and bellows are S in the sectional area of spoiler installed position, spoiler Upper surface area is then 40%~60%S.
Further, flap valve is additionally provided with below spoiler in the bellows.
Further, heat-insulation layer is provided with the igniting section furnace roof of the ignition furnace, the outlet side of burner is embedded in the insulation In layer, and insert depth is 15~25mm.
Further, the burner is internally provided with a central cavity, and the inside of the central cavity is gas passage, in this Air duct is surrounded between the outer wall of chambers of the heart body and the outer wall of burner, is respectively provided with the outer wall of the central cavity and the outer wall of burner There is spinning disk, spinning disk is obliquely installed the flow direction of air along passage, outside the spinning disk on central cavity outer wall and burner Spinning disk on wall is staggered successively.
Further, the gas inlet pipe includes gas main, and the gas main is connected with coal gas supervisor, coal gas master Multiple gas manifolds are provided with pipe, on each gas manifold gas distributor is provided with, be communicated with the gas distributor Multiple branch gas tubes, the connection corresponding with the gas passage of burner of each branch gas tube.
Further, the hot blast air inlet pipe includes hot air source pipeline, and one end of the hot air source pipeline sequentially passes through blower fan With sedimentation dirt pocket, finally it is connected with the blowdown stack of central cooler, three hot blasts is provided with the other end of hot air source pipeline It is in charge of;Wherein two hot blasts are in charge of connection corresponding with the isolation ward of igniting section furnace roof front and back ends respectively, and another hot blast is in charge of Multiple hot blast manifolds are provided with, the connection corresponding with the air duct of burner of each hot blast manifold.
Further, the isolation ward includes being in charge of the passage being connected with hot blast, and the passage extends to ignition furnace Furnace roof inwall, and the bottom of passage is provided with surge chamber, and the bottom of the surge chamber offers the spout of strip, hot blast point Hot blast Jing passages in pipe enter surge chamber, and final by spout ejection.
3. beneficial effect
The technical scheme provided using the utility model, compared with prior art, is had the advantages that:
(1)A kind of sintering ignition device of the present utility model, both can optimize igniter fuel whole sintering feed surface point Cloth, improves ignition results, and balanced sintering machine sintering feed ignition quality everywhere improves Sintering Operation Index, again can be high to central cooler Warm flue gas carries out heat recovery, can also improve ignition results, reduces the consumption of igniter fuel, contributes to reaching energy-conserving and environment-protective Manufacturing technique requirent.
(2)A kind of sintering ignition device of the present utility model, on igniting section furnace roof row's burner is vertically arranged, middle The linear type uniform intervals arrangement of burner, the curved arrangement of burner of close sintering pallet both sides, and the burner of arc shooting Height apart from sintering feed is lower than middle burner, can effectively optimize distribution of the igniter fuel on whole sintering feed surface, keeps away Non-sintered machine trolley both sides heat supply deficiency, part bed of material surface are difficult to the problem lighted, and improve ignition results, and balanced sintering machine is each Place's sintering feed ignition quality.
(3)A kind of sintering ignition device of the present utility model, burner is internally provided with a central cavity, the central cavity Inside is gas passage, and between the outer wall of the central cavity and the outer wall of burner air duct is surrounded, and can be passed through hot blast air Mix with coal gas, on the outer wall of the central cavity and the outer wall of burner spinning disk, spinning disk air along passage are provided with Flow direction is obliquely installed, and the spinning disk on central cavity outer wall is staggered successively with the spinning disk on burner outer wall, this kind of Structure design can add strong hot air air to mix with the uniform of coal gas, prevent burner from blocking, and effectively improve the efficiency of combustion of coal gas And burning velocity, burner hearth firing temperature is improved, reduce gas consumption.
(4)A kind of sintering ignition device of the present utility model, be provided with the bellows immediately below burner spoiler and Flap valve, flap valve is located at spoiler lower section, and by the cooperation of spoiler and flap valve the igniting of burner lower section can be effectively reduced The exhausting area and exhausting amount in region, realizes the lower negative pressure igniting of ignition zone, and in igniting sintering machine table top air volume adjustment is made More rationally, air exhauster power consumption is reduced, and high temperature torch and the full and uniform contact of sintering feed can be made, heat is concentrated, and sinter bed can Fully to burn, and gas consumption amount is greatly decreased, and ignition quality is higher.
(5)A kind of sintering ignition device of the present utility model, is respectively arranged with the igniting section front and back ends furnace roof of ignition furnace Isolation ward, for spraying high-temperature flue gas in igniting section front and back ends, forms homogeneous, stable hot blast divider wall, and with sintering charge level Soft contact, the hot blast divider wall can be prevented effectively from the high-temperature flue gas of igniting section and be lost to soaking zone, reduce because heat loss is caused More unnecessary gas consumptions.
(6)A kind of sintering ignition device of the present utility model, isolation ward includes passage, surge chamber and spout, Jing depositing dusts High-temperature flue gas Jing passages after purified treatment, pressurization enter surge chamber, reduce and are stably sprayed by spout after gas, are formed Flexible hot blast divider wall equalization stable, and with the thin-skinned contact of sintering feed, be prevented effectively from gas curtain wall heterogeneity, isolation effect not Stable problem.
Description of the drawings
Fig. 1 is a kind of structural representation of sintering ignition device of the present utility model;
Fig. 2 is the mplifying structure schematic diagram of ignition furnace in the utility model;
Fig. 3 is Section A-A figure in Fig. 1;
Fig. 4 is section B-B figure in Fig. 1;
Fig. 5 is C-C sectional views in Fig. 1;
Fig. 6 is the internal structure schematic diagram of burner in the utility model.
Label declaration in schematic diagram:1st, central cooler;2nd, blowdown stack;3rd, dirt pocket is settled;4th, blower fan;5th, hot blast source capsule Road;6th, ignition furnace;7th, burner;8th, isolation ward;9th, sintering feed;10th, spinning disk;11st, surge chamber;12nd, passage;13rd, spout; 14th, spoiler;15th, bellows;16th, hot blast is in charge of;17th, hot blast manifold;18th, first flow regulating valve;19th, gas main;20th, coal Gas stop valve;21st, coal gas supervisor;22nd, second flow regulating valve;23rd, gas manifold;24th, gas distributor;25th, flap valve; 26th, branch gas tube.
Specific embodiment
To further appreciate that content of the present utility model, the utility model is described in detail with reference to accompanying drawing.
With reference to embodiment, the utility model will be further described.
Embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of sintering ignition device of the present embodiment, including ignition furnace 6, Gas inlet pipe and hot blast air inlet pipe, ignition furnace 6 includes igniting section and soaking zone, wherein dividing on the front and back ends furnace roof of igniting section Isolation ward 8 is not provided with, the isolation ward 8 is connected with hot blast air inlet pipe.A row is vertically arranged on the igniting section furnace roof of ignition furnace 6 Burner 7, is provided with altogether as shown in Figure 2 12 burners, the linear type uniform intervals arrangement of eight middle burners 7, near sintering Latter two curved arrangement of burner 7 of machine trolley both sides, and the burner 7 of both sides apart from the surface of sintering feed 9 height than middle Low 10~the 20mm of burner 7, specifically in the present embodiment the burner 7 of both sides apart from the surface of sintering feed 9 height than middle burner 7 Low 10mm.Heat-insulation layer is provided with igniting section furnace roof in the present embodiment, the outlet side of burner 7 is embedded in the heat-insulation layer, and it is embedded Depth is 15mm.Burner 7 is embedded in heat-insulation layer, is not stretched into inside burner hearth, can be prevented effectively from baking of the combustion flame to burner 7 Roasting infringement.Burner 7 in the present embodiment is arranged on the different level of the differing heights of sintering feed 9, and the burner 7 of both sides Igniting demand is met by curved distribution, single burner 7, and can effectively optimize igniter fuel and sinter dividing for charge level whole Cloth, it is to avoid sintering pallet both sides heat supply deficiency, part bed of material surface are difficult to the problem lighted, improves ignition results, and equilibrium is burnt Knot machine sintering feed ignition quality everywhere.
Burner 7 is internally provided with a central cavity in the present embodiment, and the inside of the central cavity is the coal for passing through that gives gas Gas passage, between the outer wall of the central cavity and the outer wall of burner 7 air duct passed through for combustion air, gas passage are surrounded It is connected with gas inlet pipe, air duct is connected with hot blast air inlet pipe;What deserves to be explained is, the outer wall of the central cavity with Spinning disk 10 is provided with the outer wall of burner 7, spinning disk 10 is obliquely installed the flow direction of air along passage, central cavity Spinning disk 10 on outer wall is staggered successively with the spinning disk 10 on the outer wall of burner 7, as shown in fig. 6, spinning disk 10 adopts this Double mistake formula arrangements, can add strong hot air air to mix with the uniform of coal gas before and after kind, prevent burner 7 from blocking, and effectively improve coal gas Efficiency of combustion and burning velocity, improve burner hearth firing temperature, reduce gas consumption.
Gas inlet pipe in the present embodiment includes gas main 19, as shown in figure 3, the gas main 19 is responsible for coal gas 21 are connected, and are provided with gas stop valve 20 and second flow regulating valve 22 between gas main 19 and coal gas supervisor 21, just Circulation and flow in control and regulation coal gas;Multiple gas manifolds 23 are provided with coal gas supervisor 21, on each gas manifold 23 Be provided with gas distributor 24, on the gas distributor 24 multiple branch gas tubes 26 be communicated with, each branch gas tube 26 with burn Gas passage correspondence in mouth 7 is connected, for being passed through coal gas, and the coal gas intake of each branch gas tube 26 into burner 7 Can be effectively controlled, rationally ensure the equilibrium of coal gas intake in multiple burners 7.
Hot blast air inlet pipe in the present embodiment includes hot air source pipeline 5, and anti-corrosion, wearing layer are provided with inside hot air source pipeline 5, Outside is provided with heat insulation layer, and performance is excellent, and as shown in Figure 1 and Figure 2, one end of the hot air source pipeline 5 sequentially passes through wind Machine 4 and sedimentation dirt pocket 3, are finally connected with the blowdown stack 2 of central cooler 1, and on the other end of hot air source pipeline 5 three are provided with Root hot blast is in charge of 16, and hot air source pipeline 5 and hot blast are in charge of between 16 and are provided with first flow regulating valve 18, are easy to control hot air flow Amount;Wherein two hot blasts are in charge of 16 and are corresponded to respectively and are connected with the isolation ward 8 of igniting section furnace roof front and back ends, and another hot blast divides Multiple hot blast manifolds 17 are provided with pipe 16, the connection corresponding with the air duct in burner 7 of each hot blast manifold 17.
The bottom of ignition furnace 6 is provided with the bellows 15 of multiple exhausting, and multiple bellows 15 are connected respectively with windlass main, take out Wind house steward be connected with air exhauster, and the design of bellows 15 is the negative pressure state for carrying out exhausting, keeping in ignition furnace 6 interior to ignition furnace 6, Accelerate material sintering rate, improve caking power.What deserves to be explained is, the bellows 15 being located in the present embodiment immediately below burner 7 Spoiler 14 is inside provided with, bellows 15 are funnel-shaped structure, and spoiler 14 is installed on inside the funnel structure of bellows 15, bellows 15 It is S in the sectional area of the installed position, the upper surface area of spoiler 14 is then 40%S(Spoiler 14 is length in the present embodiment Cube platy structure), that is, cause the wind resistance area of spoiler 14 to account for the 40% of the draught area of bellows 15, also set up in the bellows 15 There is a flap valve 25, flap valve 25 is located at the lower section of spoiler 14, the present embodiment can be with by the cooperation of spoiler 14 and flap valve 25 The exhausting area and exhausting amount of the lower section ignition zone of burner 7 are effectively reduced, the lower negative pressure igniting of ignition zone is realized, bellows 15 Suction pressure has extreme influence to ignition quality, and suction pressure is too high, and igniting draft is bigger, easily takes out sintering feed 9 tightly, sintering Rate reduction, and negative pressure is higher, igniting depth is deeper, and combustion zone is wider, and ignition heat is pumped quickly, it is difficult to concentrate, and causes Ignition quality is low and gas using quantity is big, increased energy consumption, has a strong impact on sintering quality.
To realize high-quality lower negative pressure igniting, also have in industry and adjust suction pressure using by arranging flap valve 25 , but utility model people had found to be controlled by the aperture of flap valve 25 exhausting area in production practices, adjusts suction pressure Effect it is unsatisfactory, the aperture size of flap valve 25 is difficult to precise control, and exhausting bulk cargo is easily caused suction opeing blocking.It is real Spoiler 14 is additionally provided with the top of flap valve 25 with new people, spoiler 14 is fixed in bellows 15, the length of spoiler 14 Suitable with pallet width, and the wind resistance area of spoiler 14 accounts for the 40% of the draught area of bellows 15, spoiler 14 sets in itself Meter has effectively reduced the exhausting area of bellows 15, reduces the air quantity in the bellows 15 of ignition zone lower section, reduces ignition furnace 6 Interior pressure, is more not in suction opeing clogging even if the standard-sized sheet of flap valve 25 can also realize that lower negative pressure is lighted a fire.The He of spoiler 14 Flap valve 25 is engaged and is more conducive to improve windproof effect, makes sintering machine table top air volume adjustment more reasonable in igniting, reduces taking out Blower fan power consumption.It is distinguished and admirable stopped by spoiler 14 after flow downward from its both sides of the edge, quilt at the opening of a part of Jing flap valves 25 Directly take away, the flap valve 25 that a part is inclined by is blocked in the top of flap valve 25, and in suction draught angry flow disturbance is issued, and helps In exhausting speed is further slowed down, the formation of lower negative pressure environment in ignition zone is ensured.Adopt the structure design so that igniting When the length of flame it is suitable, high temperature torch and the full and uniform contact of sintering feed 9, heat is concentrated, and sintering feed 9 can fully burn, and Gas consumption amount is greatly decreased, and ignition quality is higher.
A kind of sintering ignition method of the present embodiment, step is as follows:
Step one, ignition furnace 6 is preheated first, hot air source pipeline 5 extracts temperature from the blowdown stack 2 of central cooler 1 Spend the high-temperature flue gas for 130 DEG C~300 DEG C, successively Jing sedimentation dirt pockets 3 and blower fan 4 carry out purified treatment and pressurization to flue gas, one Part high-temperature flue gas Jing hot blasts are in charge of 16 feeding isolation wards 8, and a part of high-temperature flue gas Jing hot blast manifolds 17 send into each burner 7 Air duct, preheats to the sintering feed 9 in ignition furnace 6;
High-temperature flue gas in step 2, isolation ward 8 spray and are contacted with the surface of sintering feed 9, in the front and back ends of igniting section Form hot blast divider wall;
Igniting coal gas is passed through in step 3, gas main 19, coal gas elder generation Jing coal gas supervisor 21 enters gas manifold 23, then After being evenly distributed by gas distributor 24, Jing branch gas tubes 26 send into the gas passage of each burner 7, you can to burner 7 Negative pressure igniting is carried out, to carry out exhausting all the time combustion-supporting for the bellows 15 of the bottom of ignition furnace 6 during igniting.
This kind of ignition method can reduce the input to traditional cold air heating apparatus, again can be to the high-temperature flue gas of central cooler 1 Heat recovery is carried out, the consumption of igniter fuel can be also reduced, contributes to realizing the manufacturing technique requirent of energy-conserving and environment-protective.This reality Apply example and be dried that pre-heat effect is good using hot blast, moisture-free is difficult overly moist, improves the gas permeability and temperature of sinter bed Degree, can effectively save the subsequent combustion energy, and sintering effect is good;And full combustion of fuel, work can be effectively ensured using hot wind for combustion supporting Change combustion process, can also provide a number of thing calorimetric for burner hearth, raise furnace temperature, and hot air source Jing sedimentation dirt pockets 3 can have Dust granules in effect purification waste gas, it is to avoid plant maintenance is had a negative impact.The ignition method of the present embodiment is suitable for use with The sintering ignition technique of the gaseous fuels such as blast furnace gas, mixed gas, the coke-stove gas of different calorific values.
Isolation ward 8 is respectively arranged with the igniting section front and back ends furnace roof of ignition furnace 6 in the present embodiment, the isolation ward 8 is adopted Heat resisting steel is made, and for spraying high-temperature flue gas in igniting section front and back ends, forms homogeneous, stable hot blast divider wall, and with sintering The soft contact of charge level, the hot blast divider wall not only solves the problem of heat smoke convection current between igniting section and soaking zone, forward and backward to put Hot blast divider wall also has heated-air drying preheating and heat insulation function, and because it takes up room little, can avoid because of preheating and drying section It is long and take effective sintering area, while the flame that also can solve the problem that igniting section sprays and scaling loss head cloth sets from entrance point Standby problem.
Embodiment 2
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of sintering ignition device of the present embodiment, its basic structure is same Embodiment 1, except that the length of ignition furnace 6 accounts for the 14%~20% of sintering machine body length in the present embodiment, its igniting section Height of the furnace roof away from the surface of sintering feed 9 is 800~900mm, and isolation ward 8 and the distance of central burner nozzle 7 of front and back ends are respectively 800~1000mm, 1300~1500mm.
Isolation ward 8 in the present embodiment includes being in charge of 16 passages 12 being connected with hot blast, and the passage 12 is extended to a little The furnace roof inwall of stove 6, and the bottom of passage 12 is provided with surge chamber 11, the bottom of the surge chamber 11 offers strip Spout 13, spout 13 forms one slit, and hot blast Jing passages 12 enter surge chamber 11, and final ejection by spout 13 forms heat Wind divider wall.As shown in Figure 4, Figure 5, isolation ward 8 includes multiple passages 12 being independently arranged and surge chamber 11, the purification of Jing depositing dusts High-temperature flue gas Jing passages 12 after process, pressurization enter surge chamber 11, reduce after gas by the stably ejection of spout 13, shape Into flexible hot blast divider wall equalization stable, and with the soft contact in the surface of sintering feed 9, be prevented effectively from gas curtain wall heterogeneity, isolation The unstable problem of effect.Surge chamber 11 is rectangular along pallet width section, length and the igniting section burner hearth width of the rectangle Degree is suitable, and the width of rectangle is 10~50mm.Depending on the number of surge chamber 11 is according to the width of pallet, set in the present embodiment 4 are set to, and the height of surge chamber 11 is 30~45mm;The length of spout 13 is suitable with the burner hearth of ignition furnace 6, the width of spout 13 Spend for 10~50mm, the spout 13 is integral type structure, and is provided with reinforcement gusset.
The igniter of the present embodiment takes up room little, and igniter fuel can have both been optimized whole using the ignition method of the device The distribution of individual sintering charge level, improves ignition results, and balanced sintering machine sintering feed ignition quality everywhere improves Sintering Operation Index, Heat recovery can be carried out to the high-temperature flue gas of central cooler 1 again, can also improve ignition results, reduce the consumption of igniter fuel, be reached To the manufacturing technique requirent of energy-conserving and environment-protective.
Below with certain steel mill 105m2As a example by the igniter and ignition method of the exploitation of sintering machine application the present embodiment, with reality The condition of production for applying before and after half a year is that foundation carries out implementation result explanation:
Table 1 is the day production target mean value of half a year before and after enforcement, specific as follows:
The utility model device of table 1 implements forward and backward each production target situation of change
Firing temperature Gas flow Air mass flow EGT Blower fan electric current Tumbler index Small sintering ore rate
m3/h m3/h A % %
Using front 1047 815 4162 118 213 72.61 10.06
Using after 1063 570 2693 121 200 72.34 9.17
Difference 16 -245 -1469 3 -13 -0.27 -0.89
Note:Above each index is the day production target mean value that device is implemented forward and backward month.
After using the igniter of the present embodiment, single burner 7 is arranged on the different level away from the differing heights of sintering feed 9 On, make the surface ignition intensity of sintering feed 9 more sufficient, uniform, do not have " yellowish leukorrhea " to occur;Lighted a fire using hot wind for combustion supporting, and lighted a fire Section front and back ends arrange homogeneous, stable hot blast divider wall, significantly improve ignition results, reduce gas consumption, as shown in table 1, Firing temperature improves 16 DEG C, and gas flow reduces 245m3/h;The matching design of spoiler 14 and flap valve 25 makes to be sintered during igniting Machine table top air volume adjustment is more reasonable, and blower fan power consumption is reduced, and air mass flow reduces 1469m3/ h, blower fan current reduction 13A;Using this The ignition method of utility model, Sintering Yield is obviously improved, and small sintering ore rate reduces by 0.89 percentage point.
The direct economic benefit that the ignition method of the present embodiment is produced is as follows:
Gas saving:365×24h×90%×245m3/h=1931580m3
Save power consumption:365 × 24h × 90% × 13A × 10000V ÷ 1000=1024920 kilowatt hours
Gas price presses 0.44 yuan/m3, electricity price by 0.6 yuan/kilowatt hour calculate, year reduces cost:1931580m3×0.44 Unit/m3+ 1024920 kilowatt hour × 0.6 yuan/kilowatt hour=146.48 ten thousand yuan, if popularization and application, its direct economic benefit extremely shows Write.
Embodiment 3
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of sintering ignition device of the present embodiment, its basic structure is same Embodiment 2, except that in the present embodiment arc shooting burner 7 apart from the surface of sintering feed 9 height than middle burner 7 Low 20mm;The outlet side of burner 7 is embedded in the heat-insulation layer, and insert depth is 25mm;Bellows 15 are in the installation site of spoiler 14 The sectional area at place is S, and the upper surface area of spoiler 14 is 60%S, i.e. the wind resistance area of spoiler 14 accounts for the draught area of bellows 15 60%;Isolation ward 8 is made using heat-resistance stainless steel.
Embodiment 4
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of sintering ignition device of the present embodiment, its basic structure is same Embodiment 2, except that the burner 7 of arc shooting is lower than middle burner 7 apart from the height of sintering feed 9 in the present embodiment 15mm;The outlet side of burner 7 is embedded in the heat-insulation layer, and insert depth is 20mm;Bellows 15 are in the installed position of spoiler 14 Sectional area be S, the upper surface area of spoiler 14 is 50%S, i.e. the wind resistance area of spoiler 14 accounts for the draught area of bellows 15 50%。
Below schematically the utility model and embodiments thereof be described, the description does not have restricted, accompanying drawing Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So, if this area Those of ordinary skill enlightened by it, in the case where objective is created without departing from the utility model, design without creative The frame mode similar to the technical scheme and embodiment, all should belong to protection domain of the present utility model.

Claims (9)

1. a kind of sintering ignition device, including ignition furnace (6), it is characterised in that:Also include gas inlet pipe and hot blast air inlet pipe, Row's burner (7) is provided with the igniting section furnace roof of the ignition furnace (6), each burner (7) enters with gas inlet pipe and hot blast Tracheae is connected respectively;Isolation ward (8), the isolation ward are provided with the front and back ends of ignition furnace (6) the igniting section furnace roof (8) it is connected with hot blast air inlet pipe;
Ignition furnace (6) bottom is provided with bellows (15), wherein being provided with resistance in the bellows (15) immediately below burner (7) Stream plate (14).
2. a kind of sintering ignition device according to claim 1, it is characterised in that:Above-mentioned row's burner (7) is in middle part Straight line, the distribution of both sides camber line, burner (7) the linearly type uniform intervals arrangement at middle part, near the burner of sintering pallet both sides (7) height of the curved arrangement, and both sides burner (7) apart from sintering feed (9) surface is less than middle burner (7) apart from sintering feed (9) height on surface.
3. a kind of sintering ignition device according to claim 2, it is characterised in that:The bellows (15) are infundibulate, wind Case (15) is S in the sectional area of spoiler (14) installed position, and the upper surface area of spoiler (14) is then 40%~60% S。
4. a kind of sintering ignition device according to claim 3, it is characterised in that:Bellows (15) inherence spoiler (14) lower section is additionally provided with flap valve (25).
5. a kind of sintering ignition device according to claim 4, it is characterised in that:The igniting section stove of the ignition furnace (6) Heat-insulation layer is provided with top, the outlet side of burner (7) is embedded in the heat-insulation layer, and insert depth is 15~25mm.
6. a kind of sintering ignition device according to claim 1 or 5, it is characterised in that:The burner (7) is internally provided with One central cavity, the inside of the central cavity is gas passage, is surrounded between the outer wall of the outer wall and burner (7) of the central cavity Air duct, on the outer wall of the central cavity and the outer wall of burner (7) spinning disk (10) is provided with, and spinning disk (10) is along passage The flow direction of interior air is obliquely installed, the spinning disk on the spinning disk (10) on central cavity outer wall and burner (7) outer wall (10) it is staggered successively.
7. a kind of sintering ignition device according to claim 6, it is characterised in that:The gas inlet pipe includes that coal gas is total Pipe (19), the gas main (19) is connected with coal gas supervisor (21), and on coal gas supervisor (21) multiple gas manifolds are provided with (23), gas distributor (24) is provided with each gas manifold (23), on the gas distributor (24) multiple coals is communicated with Gas branch pipe (26), the connection corresponding with the gas passage of burner (7) of each branch gas tube (26).
8. a kind of sintering ignition device according to claim 7, it is characterised in that:The hot blast air inlet pipe includes hot air source Pipeline (5), one end of the hot air source pipeline (5) sequentially passes through blower fan (4) and sedimentation dirt pocket (3), finally with central cooler (1) Blowdown stack (2) is connected, and three hot blasts is provided with the other end of hot air source pipeline (5) and is in charge of (16);Wherein two hot blasts It is in charge of that (16) are corresponding with the isolation ward (8) of igniting section furnace roof front and back ends respectively to be connected, another hot blast is in charge of on (16) and is provided with Multiple hot blast manifolds (17), the connection corresponding with the air duct of burner (7) of each hot blast manifold (17).
9. a kind of sintering ignition device according to claim 8, it is characterised in that:The isolation ward (8) includes and hot blast It is in charge of the passage (12) that (16) are connected, the passage (12) extends to the furnace roof inwall of ignition furnace (6), and passage (12) Bottom be provided with surge chamber (11), the bottom of the surge chamber (11) offers the spout (13) of strip, and hot blast is in charge of (16) In hot blast Jing passages (12) into surge chamber (11), and final sprayed by spout (13).
CN201621159026.1U 2016-10-31 2016-10-31 Sintering ignition Active CN206131733U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106440811A (en) * 2016-10-31 2017-02-22 马鞍山钢铁股份有限公司 Igniting device and ignition method for sintering

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106440811A (en) * 2016-10-31 2017-02-22 马鞍山钢铁股份有限公司 Igniting device and ignition method for sintering
CN106440811B (en) * 2016-10-31 2019-01-18 马鞍山钢铁股份有限公司 A kind of sintering ignition device and ignition method

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