CN102192648A - Coating furnace and method for drying, sintering and cooling band steel utilizing coating furnace - Google Patents
Coating furnace and method for drying, sintering and cooling band steel utilizing coating furnace Download PDFInfo
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- CN102192648A CN102192648A CN2011101049609A CN201110104960A CN102192648A CN 102192648 A CN102192648 A CN 102192648A CN 2011101049609 A CN2011101049609 A CN 2011101049609A CN 201110104960 A CN201110104960 A CN 201110104960A CN 102192648 A CN102192648 A CN 102192648A
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Abstract
The invention relates to a coating furnace and a method for drying, sintering and cooling a band steel utilizing the coating furnace. The coating furnace is characterized by mainly comprising a furnace body, a cycle spray box, an air-floating-type band steel transmission system, a high-power open fire nozzle heat-supplying system and a band steel strip threading system; the cycle spray box is sleeved in the furnace body; the cycle spray box is provided with a plurality of jet holes; the band steel in the coating furnace is transmitted by the air-floating-type band steel transmission system; the band steel in the whole coating furnace is not contact with any device in the coating furnace; the band steel is dried and sintered by the spray of the cycle spray box adopted by a drying section and a sintering section, and the temperature of the furnace is controlled uniformly; and the capability of the high-power open fire nozzle is 8-10 times of the traditional low-power nozzle, the arrangement amount of the high-power open fire nozzle is reduced by nearly 90% of the low-power nozzle, an empty gas conduit before the furnace is simple, the operation amount of a valve before the nozzle is reduced obviously, and the working amount of the subsequent maintaining is reduced.
Description
Technical field
The present invention relates to belt steel surface is carried out the technical field of coating, be specifically related to a kind of coating stove and application process thereof that the coating of band steel is carried out drying, sintering and cooling.
Background technology
Existing band steel conveyer is the contact conveyer, promptly adopts furnace roller to transmit, and this transmission means causes the damage of belt steel surface scuffing or transmission equipment easily under specific environment.In the silicon steel continuous annealing unit, the band steel is after going out the continuous annealing furnace coating, before the coating sintering, in the coating drying and sintering process as adopt the contact transmission means very easily to cause coating to scratch, and coating easily is bonded in the furnace roller surface and forms dross, thereby further worsens transmission quality.In addition, existing coating stove adopts a plurality of small-power U type radiation pipe burner tips or the pulse-combustion of small-power naked light burner control for guaranteeing coating liquid drying and sintering effect, the pipe arrangement complexity of stokehold, and the Operation and Maintenance workload is big.
Summary of the invention
Technical problem to be solved by this invention is the drying that provides a kind of at the problems referred to above and can effectively improve strip surface quality, improve band steel coating liquid with the coating stove of curing degree, simple in structure and easy operating and maintenance and utilizes its method to being with steel to carry out drying, sintering and cooling.
The technical solution used in the present invention is:
A kind of coating stove comprises that mainly coating furnace body, circulation spray box, air floating band steel transfer system, high-power naked light burner heating system and band steel wear the band system, wherein, body of heater mainly by structure housing, liner is fire-resistant and heat-barrier material is formed; Furnace body inner housing is established the circulation spray box, keeps at a certain distance away between circulation spray box and the body of heater, and the circulation spray box is provided with a plurality of spray-holes towards the band steel; Air floating band steel transfer system and band steel are worn in each comfortable body of heater of band system and are distributed along body of heater; High-power naked light burner heating system is arranged on the body of heater, comprises the high-power naked light burner of a plurality of proportion of utilization combustion method segmentation controls.
Press such scheme, be divided into dryer section body of heater, sintering stage body of heater, cooling section body of heater successively along band steel direction of transfer body of heater, the circulation spray box is divided into dryer section circulation spray box, sintering stage circulation spray box, cooling section circulation spray box successively, each section circulation spray box is all served as reasons and is gone up the separate type spray box of spray box and following spray box composition, and the band steel is from passing through between the spray box up and down; Corresponding with above-mentioned segmentation, be disposed with dryer section circulation spray box drying system, sintering stage circulation spray box sintering system, cooling section spray box cooling system on the circulation spray box; Corresponding with the drying system of each section, the dryer section body of heater is provided with that dryer section smoke evacuation system, sintering stage body of heater are provided with the sintering stage smoke evacuation system, the cooling section body of heater is provided with the cooling section smoke evacuation system.
Press such scheme, dryer section circulation spray box drying system mainly is made of drying system first and second circulating fans, first connecting pipe and dryer section circulation spray box, drying system first circulating fan is connected with following spray box by one first connecting pipe, and drying system second circulating fan is connected with last spray box by another first connecting pipe; Wherein, the drying system first and second circulating fan air inlets are set directly in the dryer section body of heater, the first and second circulating fan air outlets are connected with first connecting pipe that is connected separately respectively, and each first connecting pipe is connected with the air inlet of following spray box and last spray box respectively; The band steel along default dry section strip steel by line from passing through between the spray box up and down; The dryer section smoke evacuation system comprises first steel stack, first smoke exhaust fan, the first main smoke discharging pipe, the first smoke evacuation arm, wherein, the inlet of first smoke exhaust fan is connected with main smoke discharging pipe, the first smoke evacuation arm is connected with the first main smoke discharging pipe, and the first smoke evacuation arm is connected with the smoke evacuation delivery outlet of dryer section body of heater.
Press such scheme, sintering stage circulation spray box sintering system mainly is made of sintering stage circulation spray box systemic circulation blower fan, second connecting pipe and sintering stage circulation spray box, sintering stage circulation spray box systemic circulation air inlet is set directly in the sintering stage body of heater, and upper and lower spray box air inlet is connected with described sintering stage circulation spray box systemic circulation blower fan by second connecting pipe; The band steel passes through between upper and lower spray box by line along default sintering section strip steel; The sintering stage smoke evacuation system comprises second steel stack, second smoke exhaust fan, the second main smoke discharging pipe, the second smoke evacuation arm, the inlet of second smoke exhaust fan is connected with the second main smoke discharging pipe, the second smoke evacuation arm is connected with the second main smoke discharging pipe, and the second smoke evacuation arm is connected with the smoke evacuation delivery outlet of sintering stage body of heater.
Press such scheme, cooling section spray box cooling system mainly is made up of cooling section spray box cooling system cooling blower, the 3rd connecting pipe and cooling section circulation spray box, the cooling blower inlet scoop is directly in ambient atmosphere, the cooling blower air outlet is connected with the 3rd connecting pipe, and the 3rd connecting pipe directly is connected with cooling section circulation spray box air inlet; The band steel passes through between upper and lower spray box by line along default cooling section strip steel; Cooling section waste discharge system comprises the 3rd steel stack, the 3rd smoke exhaust fan, the 3rd main smoke discharging pipe, the 3rd smoke evacuation arm, the inlet of the 3rd smoke exhaust fan is connected with the 3rd main smoke discharging pipe, the 3rd smoke evacuation arm is connected with the 3rd main smoke discharging pipe, and the 3rd smoke evacuation arm is connected with the smoke evacuation delivery outlet of cooling section body of heater.
Press such scheme, the air floating band steel transfer system is arranged between the outlet of the outlet of dryer section body of heater and cooling section body of heater, mainly by the embedded circulating fan of air floating band steel transmission system, air floating band steel transmission device and the 4th connecting pipe are formed, embedded circulating fan is installed on the body of heater, the inlet scoop of embedded circulating fan is arranged in the coating stove, the air outlet of embedded circulating fan is connected with the 4th connecting pipe, the 4th connecting pipe is connected with the air inlet of air floating band steel transmission device, the air outlet of air floating band steel transmission device is a nozzle, and nozzle upwards passes through line towards default coating furnace zone steel.
Press such scheme, the air floating band steel transmission device of air floating band steel transfer system and sintering stage and cooling section circulation spray box are provided with at interval, and the gas of the nozzle ejection of air floating band steel transmission device makes the band steel be suspended in up and down between the spray box of each section circulation spray box.
Press such scheme, high-power naked light burner heating system is separately positioned on dryer section body of heater and the sintering stage body of heater; High-power naked light burner heating system by gas piping, air duct, combustion barrel, overlap more high-power naked light burner and multiple manually and automatic valve form; The burning capacity of high-power naked light burner is 8～10 times of small-power burner ability in the past; High-power naked light burner is installed on the body of heater of coating stove and with the combustion barrel of furnace body inside and is connected, and the flame end of burner is positioned at combustion barrel; Gas piping is connected with the coal gas interface of high-power naked light burner, and air duct is connected with the air interface of high-power naked light burner.
Press such scheme, the band steel is worn the band system and is distributed between import of dryer section body of heater and the outlet of cooling section body of heater along body of heater, mainly by the import elevator, wear belt track, wear band dolly, threading steel rope and the outlet elevator is formed, the import elevator is installed in the inlet of dryer section body of heater, the outlet elevator is installed in the outlet of cooling section body of heater, importing and exporting elevator is connected with an end of a threading steel rope respectively, wearing belt track is installed on the interior bracing frame of coating stove, wear the band dolly and move freely along wearing belt track, the other end of import and export threading steel rope respectively with wear the band dolly and be connected.
Utilize above-mentioned coating stove to be to the method that the band steel carries out drying, sintering and cooling:
(1) after the band steel process coating roller coating, at first wearing band work makes it enter the dryer section body of heater of coating stove: the band steel is with dolly to be connected with wearing, wearing the band dolly is wearing on the belt track and can be free to slide, threading steel rope one end of the port of export with wear the band dolly be connected, the other end is connected with the outlet elevator, by outlet elevator scrolling threading steel rope, the moving band dolly of wearing of threading steel strap will be with steel to pass the coating stove.
(2) wear after band work finishes, the dryer section body of heater that the band steel enters the coating stove carries out drying to the coating liquid on surface, enters the sintering stage body of heater then, and face coat liquid is carried out sintering, make coating liquid securely sintering enter the cooling section body of heater again and will be with steel to be cooled to normal temperature at belt steel surface.
It is characterized in that in the step (2):
In the dryer section body of heater, the band steel moves according to the track of predefined band steel catenary, and integral body is overhang in the dryer section body of heater, is held up by the air floating band steel transmission system until the exit at the dryer section body of heater; The band steel does not contact with any equipment of coating stove in the whole coating stove;
When the exit of dryer section body of heater band steel is held up by the air floating band steel transmission system, by the space gas pipeline of high-power naked light burner heating system to high-power naked light burner air supply and coal gas, by high-power naked light burner tissue burning, the ratio combustion control technology of segmentation control makes high-power naked light burner evenly supply with heat by combustion barrel to burner hearth; The high-temperature flue gas that burning produces is sucked by drying system first and second circulating fans of dryer section circulation spray box drying system, enter dryer section circulation spray box through first connecting pipe, the band steel that is circulated up and down between the spray box by the spray-hole on the dryer section circulation spray box sprays, coating liquid to belt steel surface carries out drying, and makes burner hearth reach desired target temperature and satisfy the requirement of temperature uniformity by the high-temperature flue gas that dryer section circulation spray box sprays; The flue gas that the high-power naked light burner combustion of high-power naked light burner heating system produces is pooled to the first main smoke discharging pipe by the dryer section smoke evacuation system by the first smoke evacuation arm, under the effect of first smoke exhaust fan, is discharged into outside the factory building by first steel stack;
The band steel carries out transmission at the sintering stage body of heater by the air floating band steel transfer system, this moment by the space gas pipeline of high-power naked light burner heating system to high-power naked light burner air supply and coal gas, by high-power naked light burner tissue burning, the ratio combustion control technology of controlling by segmentation makes high-power naked light burner evenly supply with heat to burner hearth; The high-temperature flue gas that burning produces is sucked by the sintering stage circulation spray box systemic circulation blower fan of sintering stage circulation spray box sintering system, enter sintering stage circulation spray box through second connecting pipe, spray to the band steel by the spray-hole on the sintering stage circulation spray box, coating liquid to belt steel surface carries out sintering, and makes burner hearth reach desired target temperature and satisfy the requirement of temperature uniformity by the high-temperature flue gas that sintering stage circulation spray box sprays; The flue gas that the high-power naked light burner combustion of high-power naked light burner heating system produces is pooled to the second main smoke discharging pipe by the sintering stage smoke evacuation system by the second smoke evacuation arm, under the effect of second smoke exhaust fan, is discharged into outside the factory building by second steel stack;
The band steel carries out transmission at the cooling section body of heater by the air floating band steel transfer system, suck cold wind by cooling section spray box cooling system cooling blower and enter cooling section circulation spray box through the 3rd connecting pipe this moment from atmosphere, spray to the band steel by the spray-hole on the cooling section circulation spray box, coating liquid to belt steel surface cools off, and the cooling air by cyclic spray makes burner hearth reach desired target temperature and satisfies the requirement of temperature uniformity; The cooling air that is sprayed in the stove by cooling section circulation spray box is pooled to the 3rd main smoke discharging pipe by the cooling section smoke evacuation system by the 3rd smoke evacuation arm, under the effect of the 3rd smoke exhaust fan, is discharged into outside the factory building by the 3rd steel stack.
The present invention is applicable to cold rolling mill silicon steel continuous annealing furnace coating unit, unit such as zinc-plated, and the band steel is after through coating roller, zinc pot, and coating adopted present technique can improve drying and the curing degree and the strip surface quality of band steel coating liquid before drying.
The invention has the beneficial effects as follows:
1, adopt the air floating band steel transmission device that the band steel is carried out transmission, the band steel all is in suspended state in whole coating stove, and the band steel shows no any scuffing, and strip surface quality is good, and effectively protects transmitting device to be without prejudice;
2, adopt high-power naked light burner heating system that coating is carried out heat supply, dryer section and sintering furnace section adopt the circulation spray box to spray being with steel to carry out drying and sintering, and Control for Kiln Temperature is even, the coating insulation reliable in quality;
3, adopting the ability of high-power naked light burner is 8～10 times of ability of small-power burner in the past, make high-power naked light burner layout amount arrange thus and nearly lacked 90% than the small-power burner, stokehold space gas pipeline is simple, burner early gate operational ton obviously reduces, and the workload of follow-up maintenance reduces;
4, owing to adopted the air floating band steel transmission system, there is not furnace roller in the stove, adopt two ends winding type band steel to wear the band system and wear band, can substitute and wear the band rod and wear band quickly and easily, and import and export being provided with effectively to control and wearing tape speed of elevator.
5, overall structure simple, reliable, be easy to realize.
Description of drawings
Fig. 1 is dryer section furnace binding figure of the present invention;
Fig. 2 is a dryer section body of heater of the present invention porch structure chart;
Fig. 3 is a sintering stage structure chart of the present invention;
Fig. 4 is a cooling section structure chart of the present invention;
Fig. 5 is a dryer section oven body part structure cutaway view of the present invention;
Fig. 6 is a sintering stage oven body part structure cutaway view of the present invention;
Fig. 7 is a cooling section oven body part structure cutaway view of the present invention;
Fig. 8 is an air floating band steel transmission system cutaway view of the present invention;
Fig. 9 is a high-power naked light burner heating system cutaway view of the present invention;
Figure 10 wears the band system construction drawing for band steel of the present invention;
In the accompanying drawing, each Reference numeral correspondence is as follows:
1-dryer section body of heater, 2-dryer section circulation spray box drying system, 3-dryer section smoke evacuation system, 4-sintering stage body of heater, 5-sintering stage circulation spray box sintering system, 6-sintering stage smoke evacuation system, 7-cooling section body of heater, 8-cooling section spray box cooling system, 9-cooling section waste discharge system, 10-air floating band steel transmission system, the high-power naked light burner of 11-heating system, 12-band steel is worn the band system, 13-band steel catenary, 14-coating stove center line, the 15-coating roller, 16-dryer section circulation spray box drying system first circulating fan, 17-dryer section circulation spray box, 18-dryer section circulation spray box drying system second circulating fan, 19-first connecting pipe, 20-is dry, and section strip steel passes through line, spray box under the 21-, the last spray box of 22-, the 23-structure housing, fire-resistant and the heat-barrier material of 24-liner, 25-sintering stage circulation spray box systemic circulation blower fan, 26-second connecting pipe, 27-sintering stage circulation spray box, 28-sintering section strip steel passes through line, 29-cooling section spray box cooling system cooling blower, 30-the 3rd connecting pipe, 31-cooling section circulation spray box, 32-cooling section strip steel passes through line, the embedded circulating fan of 33-air floating band steel transmission system, 34-the 4th connecting pipe, 35-air floating band steel transmission device, 36-coating furnace zone steel passes through line, 37-coating furnace body, the high-power naked light burner of 38-, the 39-branch gas tube, 40-coal gas is responsible for, 41-air arm, the 42-air is responsible for, the 43-combustion barrel, 44-exports elevator, 45-threading steel rope, 46-wears belt track, 47-wears the band dolly, 48-import elevator, 49-is with steel
The specific embodiment
Further specify coating stove of the present invention below in conjunction with accompanying drawing 1-4.
Accompanying drawing 1-4 is a coating stove of the present invention, mainly comprise coating furnace body 37, circulation spray box, air floating band steel transfer system 10, high-power naked light burner heating system 11 and be with steel to wear band system 12, wherein, body of heater 37 mainly by structure housing 23, liner is fire-resistant and heat-barrier material 24 is formed; Sheathed circulation spray box in the body of heater 37 keeps at a certain distance away between circulation spray box and the body of heater 37, and the circulation spray box is provided with a plurality of spray-holes; Air floating band steel transfer system 10 and band steel are worn in band system 12 each comfortable body of heater 37 and are distributed along body of heater; High-power naked light burner heating system 11 is arranged on the body of heater 37, comprises the high-power naked light burner 38 of a plurality of proportion of utilization combustion method segmentation controls.
Be divided into dryer section body of heater 1, sintering stage body of heater 4, cooling section body of heater 7 along the steel band direction of transfer successively through coating roller rear furnace body 37, the circulation spray box is divided into dryer section circulation spray box 17, sintering stage circulation spray box 27, cooling section circulation spray box 31 successively, each section circulation spray box is all served as reasons and is gone up the separate type spray box that spray box 22 and play spray box 21 are formed, and the band steel is from passing through (referring to Fig. 5-7) up and down between the spray box; Wherein visible dryer section circulation spray box is made up of following spray box 21 and last spray box 22 among Fig. 5; Corresponding with above-mentioned segmentation, be disposed with dryer section circulation spray box drying system 2, sintering stage circulation spray box sintering system 5, cooling section spray box cooling system 8 on the relevant position of circulation spray box; Corresponding with the drying system of each section, dryer section body of heater 1 is provided with that dryer section smoke evacuation system 3, sintering stage body of heater 4 are provided with sintering stage smoke evacuation system 6, cooling section body of heater 7 is provided with cooling section smoke evacuation system 9.
Dryer section body of heater 1 shown in accompanying drawing 1 and 5.Dryer section circulation spray box drying system 2 mainly is made of dryer section circulation spray box drying system first and second circulating fans 16,18, first connecting pipe 19 and dryer section circulation spray box 17, dryer section circulation spray box drying system first circulating fan 16 is connected with following spray box 21 by one first connecting pipe 19, and dryer section circulation spray box drying system second circulating fan 18 is connected with last spray box 22 by another first connecting pipe 19; Wherein, first and second circulating fans, 16,18 air inlets are set directly in the dryer section body of heater 1, first and second circulating fans, 16,18 air outlets are connected with first connecting pipe 19 that is connected separately respectively, and each first connecting pipe 19 is connected with the air inlet of following spray box 21 and last spray box 22 respectively; The band steel passes through between following spray box 21 and last spray box 22 by line 20 along default dry section strip steel; Dryer section smoke evacuation system 3 comprises first steel stack, first smoke exhaust fan, the first main smoke discharging pipe, the first smoke evacuation arm, wherein, the inlet of first smoke exhaust fan is connected with main smoke discharging pipe, the first smoke evacuation arm is connected with the first main smoke discharging pipe, and the first smoke evacuation arm is connected with the smoke evacuation delivery outlet of dryer section body of heater 1.
Be depicted as sintering stage body of heater 4 as accompanying drawing 3 and 6.Sintering stage circulation spray box sintering system 5 mainly is made of sintering stage circulation spray box systemic circulation blower fan 25, second connecting pipe 26 and sintering stage circulation spray box 27, sintering stage circulation spray box systemic circulation blower fan 25 air inlets are set directly in the sintering stage body of heater 4, sintering stage circulation spray box systemic circulation blower fan 25 air outlets are connected with second connecting pipe 26, and second connecting pipe 26 directly is connected with the air inlet of sintering stage circulation spray box 27; Be specially, following spray box 21 is connected with described sintering stage circulation spray box systemic circulation blower fan 25 by second connecting pipe 26 with last spray box 22; The band steel passes through between following spray box 21 and last spray box 22 by line 28 along default sintering section strip steel; Sintering stage smoke evacuation system 6 comprises second steel stack, second smoke exhaust fan, the second main smoke discharging pipe, the second smoke evacuation arm, the inlet of second smoke exhaust fan is connected with the second main smoke discharging pipe, the second smoke evacuation arm is connected with the second main smoke discharging pipe, and the second smoke evacuation arm is connected with the smoke evacuation delivery outlet of sintering stage body of heater 4.
Be depicted as cooling section body of heater 7 as accompanying drawing 4 and 7.Cooling section spray box cooling system 8 (Fig. 7) mainly is made up of cooling section spray box cooling system cooling blower 29, the 3rd connecting pipe 30 and cooling section circulation spray box 31, cooling section spray box cooling system cooling blower 29 inlet scoops are directly in ambient atmosphere, cooling section spray box cooling system cooling blower 29 air outlets are connected with the 3rd connecting pipe 30, and the 3rd connecting pipe 30 directly is connected with cooling section circulation spray box 31 air inlets; The band steel passes through between following spray box 21 and last spray box 22 by line 32 along default cooling section strip steel; Cooling section waste discharge system 9 comprises the 3rd steel stack, the 3rd smoke exhaust fan, the 3rd main smoke discharging pipe, the 3rd smoke evacuation arm, the inlet of the 3rd smoke exhaust fan is connected with the 3rd main smoke discharging pipe, the 3rd smoke evacuation arm is connected with the 3rd main smoke discharging pipe, and the 3rd smoke evacuation arm is connected with the smoke evacuation delivery outlet of cooling section body of heater 7.
Air floating band steel transfer system 10 is (referring to Fig. 1-4,8) between the outlet of the outlet of dryer section body of heater 1 and cooling section body of heater 7, distribute, by the embedded circulating fan 33 of air floating band steel transmission system, air floating band steel transmission device 35 and the 4th connecting pipe 34 are formed, embedded circulating fan 33 is installed on the body of heater 37, the inlet scoop of embedded circulating fan 33 is arranged in the coating stove, the air outlet of embedded circulating fan 33 is connected with the 4th connecting pipe 34, the 4th connecting pipe 34 is connected with the air inlet of air floating band steel transmission device 35, the air outlet of air floating band steel transmission device 35 is a nozzle, nozzle upwards passes through line 36 towards default coating furnace zone steel, and the band steel passes through line 36 by coating furnace body 37 along coating furnace zone steel; The transmission of band steel 49 in coating stove sintering stage and cooling section carried out transmission by air floating band steel transmission system 10, the inlet scoop of embedded circulating fan 33 sucks furnace gas from the coating stove and enters air floating band steel transmission device 35 by the 4th connecting pipe 34, nozzle ejection by air floating band steel transmission device 35, the gas of nozzle ejection produces a come-up to band steel 49 and supports, band steel 49 is suspended, thus can moving between the spray box up and down at each section circulation spray box.Because in the dryer section body of heater 1, band steel 49 moves according to the track of predefined band steel catenary 13, until when the exit of dryer section body of heater 1 (referring to Fig. 2) band steel is overhang, entering air floating band steel transfer system 10 working ranges, thereby the band steel does not contact with any equipment of coating stove in the whole coating stove, guarantee that the band steel does not contact with any equipment in the stove on drying regime, sintering state and state of cooling surface, belt steel surface is all without any scuffing.
High-power naked light burner heating system 11 (referring to Fig. 1 and 9) is separately positioned on dryer section body of heater 1 and the sintering stage body of heater 4; High-power naked light burner heating system 11 by branch gas tube 39, coal gas be responsible for 40, air arm 41, air are responsible for 42, combustion barrel 43, overlap more high-power naked light burner 38 and multiple manually and automatic valve form, the burning capacity of high-power naked light burner is 8～10 times of small-power burner ability in the past; High-power naked light burner 38 be installed on the body of heater 37 of coating stove and with the combustion barrel 43 of body of heater 37 inboards be connected, the flame end of burner 38 is positioned at combustion barrel 43; Branch gas tube and be responsible for 39,40 and be connected with the coal gas interface of high-power naked light burner 38, air arm and 41,42 mouthfuls of air interfaces with high-power naked light burner 38 of the person in charge are connected.
Shown in Fig. 2 and 10, the band steel is worn band system 12 and is distributed between 1 import of dryer section body of heater and 7 outlets of cooling section body of heater along body of heater, mainly by import elevator 48, wear belt track 46, wear band dolly 47, threading steel rope 45 and outlet elevator 44 are formed, the import elevator is installed 48 inlets at dryer section body of heater 1, outlet elevator 44 is installed in the outlet of cooling section body of heater 7, import and export elevator 48,44 are connected with an end of a threading steel rope 45 respectively, wearing belt track 46 is installed on the interior bracing frame of coating stove, wear band dolly 47 and can move freely along wearing belt track 46, the other end of the threading steel rope 45 in import and exit respectively with wear band dolly 47 and be connected.Owing to adopted the air floating band steel transmission system, there is not furnace roller in the stove, adopt the band steel to wear the band system and can wear band quickly and easily, and import and export being provided with effectively to control and wearing tape speed of elevator.
The course of work of this device:
At first, band steel 49 is worn band work through after the coating of coating roller 15.Shown in Fig. 2 and 10, band steel 49 is with dolly 47 to be connected with wearing, wearing band dolly 47 is wearing on the belt track 46 and can be free to slide, threading steel rope 45 1 ends of the port of export with wear the band dolly 47 be connected, the other end is connected with outlet elevator 44, by outlet elevator 44 scrolling threading steel ropes 45, threading steel rope 45 drives to wear is with dolly 47 will be with steel 49 to pass the coating stove.
Wear after band work finishes, the dryer section body of heater 1 that makes the band steel enter the coating stove according to predefined band steel catenary 13 carries out drying to its surperficial coating liquid, enter sintering stage body of heater 4 then, belt steel surface coating liquid is carried out sintering, make coating liquid securely sintering enter cooling section body of heater 7 again and will be with steel to be cooled to normal temperature at belt steel surface.
Band steel 49 is overhang at dryer section body of heater 1, among Fig. 1,2,5, the 8-10, outlet at dryer section body of heater 1 is held up by air floating band steel transmission system 10, this moment by the space gas pipeline of high-power naked light burner heating system 11 to high-power naked light burner 38 air supplies and coal gas, by high-power naked light burner 38 tissue burnings, the ratio combustion control technology of controlling by segmentation makes high-power naked light burner 38 evenly supply with heat by combustion barrel 43 to burner hearth; The high-temperature flue gas that burning produces is sucked by drying system first and second circulating fans 16,18 of dryer section circulation spray box drying system 2, enter dryer section circulation spray box 17 through first connecting pipe 19, the band steel that is circulated up and down between the spray box 22,21 by the spray-hole on the dryer section circulation spray box 17 sprays, coating liquid to band steel 49 surfaces carries out drying, and makes burner hearth reach desired target temperature and satisfy the requirement of temperature uniformity by the high-temperature flue gas that dryer section circulation spray box 17 sprays.The flue gas that high-power naked light burner 38 burnings of high-power naked light burner heating system 11 produce is pooled to the first main smoke discharging pipe by dryer section smoke evacuation system 3 by the first smoke evacuation arm, under the effect of first smoke exhaust fan, is discharged into outside the factory building by first steel stack.
Band steel 49 carries out transmission at sintering stage body of heater 4 by air floating band steel transfer system 10, among Fig. 3, the 8-10, this moment by the space gas pipeline of high-power naked light burner heating system 11 to high-power naked light burner 38 air supplies and coal gas, by high-power naked light burner 38 tissue burnings, the ratio combustion control technology of controlling by segmentation makes high-power naked light burner 38 evenly supply with heat to burner hearth; The high-temperature flue gas that burning produces is sucked by the sintering stage circulation spray box systemic circulation blower fan 25 of sintering stage circulation spray box sintering system 5, enter sintering stage circulation spray box 27 through second connecting pipe 26, spray to band steel 49 by the spray-hole on the sintering stage circulation spray box 27, coating liquid to belt steel surface carries out sintering, and makes burner hearth reach desired target temperature and satisfy the requirement of temperature uniformity by the high-temperature flue gas that sintering stage circulation spray box 27 sprays.The flue gas that high-power naked light burner 38 burnings of high-power naked light burner heating system 11 produce is pooled to the second main smoke discharging pipe by sintering stage smoke evacuation system 6 by the second smoke evacuation arm, under the effect of second smoke exhaust fan, is discharged into outside the factory building by second steel stack.
Band steel 49 carries out transmission (Fig. 4,7-10) at cooling section body of heater 7 by air floating band steel transfer system 10, suck cold wind by cooling section spray box cooling system cooling blower 29 and enter cooling section circulation spray box 31 through the 3rd connecting pipe 30 this moment from atmosphere, spray to the band steel by the spray-hole on the cooling section circulation spray box 31, coating liquid to belt steel surface cools off, and the cooling air by cyclic spray makes burner hearth reach desired target temperature and satisfies the requirement of temperature uniformity.The cooling air that is sprayed in the stove by cooling section circulation spray box 31 is pooled to the 3rd main smoke discharging pipe by cooling section smoke evacuation system 9 by the 3rd smoke evacuation arm, under the effect of the 3rd smoke exhaust fan, is discharged into outside the factory building by the 3rd steel stack.
Above disclosed only is preferred embodiment of the present invention, changes according to the equivalence that the present invention did, and still belongs to protection scope of the present invention.
Claims (10)
1. coating stove is characterized in that mainly comprising that coating furnace body, circulation spray box, air floating band steel transfer system, high-power naked light burner heating system and band steel wear the band system, wherein, body of heater mainly by structure housing, liner is fire-resistant and heat-barrier material is formed; Furnace body inner housing is established the circulation spray box, keeps at a certain distance away between circulation spray box and the body of heater, and the circulation spray box is provided with a plurality of spray-holes towards the band steel; Air floating band steel transfer system and band steel are worn in each comfortable body of heater of band system and are distributed along body of heater; High-power naked light burner heating system is arranged on the body of heater, comprises the high-power naked light burner of a plurality of proportion of utilization combustion method segmentation controls.
2. coating stove according to claim 1, it is characterized in that being divided into dryer section body of heater, sintering stage body of heater, cooling section body of heater successively along band steel direction of transfer body of heater, the circulation spray box is divided into dryer section circulation spray box, sintering stage circulation spray box, cooling section circulation spray box successively, each section circulation spray box is all served as reasons and is gone up the separate type spray box of spray box and following spray box composition, and the band steel is from passing through between the spray box up and down; Corresponding with above-mentioned segmentation, be disposed with dryer section circulation spray box drying system, sintering stage circulation spray box sintering system, cooling section spray box cooling system on the circulation spray box; Corresponding with the drying system of each section, the dryer section body of heater is provided with that dryer section smoke evacuation system, sintering stage body of heater are provided with the sintering stage smoke evacuation system, the cooling section body of heater is provided with the cooling section smoke evacuation system.
3. coating stove according to claim 2, it is characterized in that dryer section circulation spray box drying system mainly is made of drying system first and second circulating fans, first connecting pipe and dryer section circulation spray box, drying system first circulating fan is connected with following spray box by one first connecting pipe, and drying system second circulating fan is connected with last spray box by another first connecting pipe; Wherein, the drying system first and second circulating fan air inlets are set directly in the dryer section body of heater, the first and second circulating fan air outlets are connected with first connecting pipe that is connected separately respectively, and each first connecting pipe is connected with the air inlet of following spray box and last spray box respectively; The band steel along default dry section strip steel by line from passing through between the spray box up and down; The dryer section smoke evacuation system comprises first steel stack, first smoke exhaust fan, the first main smoke discharging pipe, the first smoke evacuation arm, wherein, the inlet of first smoke exhaust fan is connected with main smoke discharging pipe, the first smoke evacuation arm is connected with the first main smoke discharging pipe, and the first smoke evacuation arm is connected with the smoke evacuation delivery outlet of dryer section body of heater.
4. coating stove according to claim 3, it is characterized in that sintering stage circulation spray box sintering system mainly is made of sintering stage circulation spray box systemic circulation blower fan, second connecting pipe and sintering stage circulation spray box, sintering stage circulation spray box systemic circulation air inlet is set directly in the sintering stage body of heater, and upper and lower spray box air inlet is connected with described sintering stage circulation spray box systemic circulation blower fan by second connecting pipe; The band steel passes through between upper and lower spray box by line along default sintering section strip steel; The sintering stage smoke evacuation system comprises second steel stack, second smoke exhaust fan, the second main smoke discharging pipe, the second smoke evacuation arm, the inlet of second smoke exhaust fan is connected with the second main smoke discharging pipe, the second smoke evacuation arm is connected with the second main smoke discharging pipe, and the second smoke evacuation arm is connected with the smoke evacuation delivery outlet of sintering stage body of heater.
5. coating stove according to claim 4, it is characterized in that cooling section spray box cooling system mainly is made up of cooling section spray box cooling system cooling blower, the 3rd connecting pipe and cooling section circulation spray box, the cooling blower inlet scoop is directly in ambient atmosphere, the cooling blower air outlet is connected with the 3rd connecting pipe, and the 3rd connecting pipe directly is connected with cooling section circulation spray box air inlet; The band steel passes through between upper and lower spray box by line along default cooling section strip steel; Cooling section waste discharge system comprises the 3rd steel stack, the 3rd smoke exhaust fan, the 3rd main smoke discharging pipe, the 3rd smoke evacuation arm, the inlet of the 3rd smoke exhaust fan is connected with the 3rd main smoke discharging pipe, the 3rd smoke evacuation arm is connected with the 3rd main smoke discharging pipe, and the 3rd smoke evacuation arm is connected with the smoke evacuation delivery outlet of cooling section body of heater.
6. coating stove according to claim 5, it is characterized in that the air floating band steel transfer system is arranged between the outlet of the outlet of dryer section body of heater and cooling section body of heater, mainly by the embedded circulating fan of air floating band steel transmission system, air floating band steel transmission device and the 4th connecting pipe are formed, embedded circulating fan is installed on the body of heater, the inlet scoop of embedded circulating fan is arranged in the coating stove, the air outlet of embedded circulating fan is connected with the 4th connecting pipe, the 4th connecting pipe is connected with the air inlet of air floating band steel transmission device, the air outlet of air floating band steel transmission device is a nozzle, and nozzle upwards passes through line towards default coating furnace zone steel.
7. coating stove according to claim 6, it is characterized in that the air floating band steel transmission device of air floating band steel transfer system and sintering stage and cooling section circulation spray box are provided with at interval, the gas of the nozzle ejection of air floating band steel transmission device makes the band steel be suspended in up and down between the spray box of each section circulation spray box.
8. coating stove according to claim 7 is characterized in that high-power naked light burner heating system is separately positioned on dryer section body of heater and the sintering stage body of heater; High-power naked light burner heating system by gas piping, air duct, combustion barrel, overlap more high-power naked light burner and multiple manually and automatic valve form; The burning capacity of high-power naked light burner is 8～10 times of small-power burner ability in the past; High-power naked light burner is installed on the body of heater of coating stove and with the combustion barrel of furnace body inside and is connected, and the flame end of burner is positioned at combustion barrel; Gas piping is connected with the coal gas interface of high-power naked light burner, and air duct is connected with the air interface of high-power naked light burner.
9. coating stove according to claim 8, it is characterized in that being with steel to wear the band system distributes between import of dryer section body of heater and the outlet of cooling section body of heater along body of heater, mainly by the import elevator, wear belt track, wear the band dolly, threading steel rope and outlet elevator are formed, the import elevator is installed in the inlet of dryer section body of heater, the outlet elevator is installed in the outlet of cooling section body of heater, importing and exporting elevator is connected with an end of a threading steel rope respectively, wearing belt track is installed on the interior bracing frame of coating stove, wear the band dolly and move freely along wearing belt track, the other end of import and export threading steel rope respectively with wear the band dolly and be connected.
10. one kind is utilized the described coating stove of one of claim 1-9 to the method that the band steel carries out drying, sintering and cooling, mainly comprises the steps:
(1) after the band steel process coating roller coating, at first wearing band work makes it enter the dryer section body of heater of coating stove: the band steel is with dolly to be connected with wearing, wearing the band dolly is wearing on the belt track and can be free to slide, threading steel rope one end of the port of export with wear the band dolly be connected, the other end is connected with the outlet elevator, by outlet elevator scrolling threading steel rope, the moving band dolly of wearing of threading steel strap will be with steel to pass the coating stove;
(2) wear after band work finishes, the dryer section body of heater that the band steel enters the coating stove carries out drying to the coating liquid on surface, enters the sintering stage body of heater then, and face coat liquid is carried out sintering, make coating liquid securely sintering enter the cooling section body of heater again and will be with steel to be cooled to normal temperature at belt steel surface;
It is characterized in that in the step (2):
Wear after band work finishes, the band steel is according to track transmission in the dryer section body of heater of predefined band steel catenary, and integral body is overhang in the dryer section body of heater, is held up by the air floating band steel transmission system until the exit at the dryer section body of heater; The band steel does not contact with any equipment of coating stove in the whole coating stove;
When the exit of dryer section body of heater band steel is held up by the air floating band steel transmission system, by the space gas pipeline of high-power naked light burner heating system to high-power naked light burner air supply and coal gas, by high-power naked light burner tissue burning, the ratio combustion control technology of segmentation control makes high-power naked light burner evenly supply with heat by combustion barrel to burner hearth; The high-temperature flue gas that burning produces is sucked by drying system first and second circulating fans of dryer section circulation spray box drying system, enter dryer section circulation spray box through first connecting pipe, the band steel that is circulated up and down between the spray box by the spray-hole on the dryer section circulation spray box sprays, coating liquid to belt steel surface carries out drying, and makes burner hearth reach desired target temperature and satisfy the requirement of temperature uniformity by the high-temperature flue gas that dryer section circulation spray box sprays; The flue gas that the high-power naked light burner combustion of high-power naked light burner heating system produces is pooled to the first main smoke discharging pipe by the dryer section smoke evacuation system by the first smoke evacuation arm, under the effect of first smoke exhaust fan, is discharged into outside the factory building by first steel stack;
After this, the band steel enters the sintering stage body of heater, in this section body of heater, carry out transmission by the air floating band steel transfer system, this moment by the space gas pipeline of high-power naked light burner heating system to high-power naked light burner air supply and coal gas, by high-power naked light burner tissue burning, the ratio combustion control technology of controlling by segmentation makes high-power naked light burner evenly supply with heat to burner hearth; The high-temperature flue gas that burning produces is sucked by the sintering stage circulation spray box systemic circulation blower fan of sintering stage circulation spray box sintering system, enter sintering stage circulation spray box through second connecting pipe, spray to the band steel by the spray-hole on the sintering stage circulation spray box, coating liquid to belt steel surface carries out sintering, and makes burner hearth reach desired target temperature and satisfy the requirement of temperature uniformity by the high-temperature flue gas that sintering stage circulation spray box sprays; The flue gas that the high-power naked light burner combustion of high-power naked light burner heating system produces is pooled to the second main smoke discharging pipe by the sintering stage smoke evacuation system by the second smoke evacuation arm, under the effect of second smoke exhaust fan, is discharged into outside the factory building by second steel stack;
At last, the band steel enters the cooling section body of heater, in this section body of heater, still carry out transmission by the air floating band steel transfer system, suck cold wind by cooling section spray box cooling system cooling blower and enter cooling section circulation spray box through the 3rd connecting pipe this moment from atmosphere, spray to the band steel by the spray-hole on the cooling section circulation spray box, coating liquid to belt steel surface cools off, and the cooling air by cyclic spray makes burner hearth reach desired target temperature and satisfies the requirement of temperature uniformity; The cooling air that is sprayed in the stove by cooling section circulation spray box is pooled to the 3rd main smoke discharging pipe by the cooling section smoke evacuation system by the 3rd smoke evacuation arm, under the effect of the 3rd smoke exhaust fan, is discharged into outside the factory building by the 3rd steel stack.
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| CN2011101049609A CN102192648A (en) | 2011-04-25 | 2011-04-25 | Coating furnace and method for drying, sintering and cooling band steel utilizing coating furnace |
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| CN2011101049609A CN102192648A (en) | 2011-04-25 | 2011-04-25 | Coating furnace and method for drying, sintering and cooling band steel utilizing coating furnace |
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Application publication date: 20110921 |