CN209181508U - A kind of environment-friendly type tunnel oven - Google PatentsA kind of environment-friendly type tunnel oven Download PDF
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- CN209181508U CN209181508U CN201821697542.9U CN201821697542U CN209181508U CN 209181508 U CN209181508 U CN 209181508U CN 201821697542 U CN201821697542 U CN 201821697542U CN 209181508 U CN209181508 U CN 209181508U
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- tunnel oven
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- 238000001816 cooling Methods 0.000 claims abstract description 75
- 239000000779 smoke Substances 0.000 claims abstract description 39
- 238000002360 preparation method Methods 0.000 claims abstract description 27
- 239000002918 waste heat Substances 0.000 claims abstract description 24
- 238000010791 quenching Methods 0.000 claims abstract description 12
- 230000000171 quenching Effects 0.000 claims abstract description 12
- 238000010304 firing Methods 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 12
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- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
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- 239000007789 gas Substances 0.000 description 11
- 239000000446 fuel Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 238000001354 calcination Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
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- 239000003245 coal Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
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- 229920002456 HOTAIR Polymers 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000011068 load Methods 0.000 description 2
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- 239000002699 waste material Substances 0.000 description 2
- 235000004418 Durio kutejensis Nutrition 0.000 description 1
- 229910002089 NOx Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
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The utility model relates to a kind of environment-friendly type tunnel ovens, two side walls including forming arcuate channels, vault, bottom and the ventilating system being arranged on tunnel oven, the channel of the tunnel oven is divided into kiln hood along the direction of travel of kiln car in the channel, preheating zone, clinkering zone, cooling zone and kiln tail, kiln hood, feed preparation room is respectively arranged at kiln tail, discharge preparation room, ventilating system includes smoke evacuation system, send quenching system, raffinate hot systems, smoke evacuation system includes the branch flue being set in the side wall of preheating zone, the smoke inlet and clinkering zone of branch flue penetrate through, smoke outlet is set to the feed end of preheating zone, quenching system and the cooling air inlet of cooling zone is sent to connect, the suction opening of raffinate hot systems is set to the side wall upper end of cooling zone, the air outlet of raffinate hot systems and preheating zone penetrate through, thermal loss is small in the production process of the tunnel oven, Utilization rate of waste heat is high, and effects of energy saving and emission reduction is good.
The utility model relates to a kind of tunnel oven, especially a kind of environment-friendly type tunnel oven.
Tunnel oven is a kind of most important continous way calcination equipment of sintered brick and tile industry, in recent years, using energy-efficient Tunnel oven becomes one of energy-efficient major measure of heavy clay industry.Tunnel oven is as its name suggests the kiln that shape is similar to tunnel, Main body be various construction materials, refractory material, thermal insulation material build constitute sealing, the tunnel of high-temperature baking can be subjected to, Brick and tile green body passes sequentially through tunnel on kiln car, while heating, roasting, cooling under suitable thermal regulation, final acquired The stable brick and tile product of energy.
Tunnel oven is usually a long linear tunnel, and fixed wall and vault, bottom paving are arranged at two sides and top If track on run kiln car.Combustion apparatus is located at the on both sides of the middle of tunnel oven, constitutes fixed height temperate zone -- clinkering zone, The high-temperature flue gas generated burn under the action of tunnel oven front end chimney or smoke exhaust fan, is flowed along tunnel to kiln hood direction, Preheating enters the product in kiln step by step simultaneously, this section constitutes the preheating zone of tunnel oven.It is blasted in the kiln tail of tunnel oven cold Wind, latter section of product, this section just constitute the cooling zone of tunnel oven in cooling tunnel kiln.It places on the car and is packed into ceramics The saggar of product is continuously pushed into (conventional machinery push-in) by the entrance of preheating zone at leisure, and is loaded with the trolley of firing product, just It is pushed out gradually by the outlet of cooling zone Lai (about 1 hour or so, release a vehicle).
The calcining system of kiln includes temperature schedule and pressure regime, and temperature schedule needs are wanted according to material performance and product Depending on asking, and pressure regime is to guarantee that kiln is burnt into according to set temperature schedule.Therefore the key of properties of product is influenced It is the temperature schedule of firing.Pressure regime typically refers to distribution of the size along kiln length direction of static pressure in kiln, pressure regime Control be it is closely related with temperature schedule, the purpose for controlling pressure regime is to guarantee temperature schedule.
The most of tunnel ovens in the north are connected " the baking one " formed by artificial drying kiln and calcining kiln two parts Tunnel oven.As domestic other brick and tile baking kilns mostly, the fuel that roasted product uses all is coal (or gangue, clinker for it Deng), using outer coal-fired (outer to throw) and the interior energy heats mixing coal (being added in pug) burning and generating, preheated, heating, keep the temperature and In cooling several stages, green body is burnt under about 950 DEG C~1050 DEG C high temperature, and flue gas is discharged simultaneously.Its artificial drying is The waste heat and cigarette heat that calcining kiln is extracted by blower, send green body dewatered drying to dry kiln, will then contain wet flue gas discharge.It is dry The pollutant that discharge exhaust gas contains during dry and roasting generates mainly has the gases such as soot dust granule object and SO2, HF, NOx, CO2.
The raw material that is used due to each enterprise, fuel coal quality are different, and discharge amount is different, now all takes gas cleaning substantially, removes The control measures such as evil, reduction causes environment pollutes to a certain degree, but the existing tunnel furnace production line in the north realizes row up to standard Put still extremely difficult, and waste heat waste in process of production is serious, is not able to satisfy modern society's energy-saving and emission-reduction, environmentally protective It is required that.
Summary of the invention
In view of the deficiencies of the prior art, the utility model provides a kind of environment-friendly type tunnel oven, improves heat utilization efficiency, subtracts Few thermal energy waste, it is economical and practical.
The technical solution adopted in the utility model is:
A kind of environment-friendly type tunnel oven, including forming the side walls of arcuate channels, vault, bottom and being arranged in logical on tunnel oven Wind system is equipped with track on bottom, and the channel of the tunnel oven is divided into kiln hood, pre- along the direction of travel of kiln car in the channel The torrid zone, clinkering zone, cooling zone and kiln tail, it is critical that being respectively arranged with feed preparation room, discharging at the kiln hood, kiln tail Preparation room, is provided with closing wicket between the preheating zone and clinkering zone, the ventilating system include smoke evacuation system, send it is cold Wind system, raffinate hot systems, the smoke evacuation system include the branch flue being set in the side wall of preheating zone, branch flue into cigarette Mouth is set to the feed end of preheating zone with clinkering zone perforation, smoke outlet, and described send quenching system and the cooling of cooling zone to enter the wind Mouth connection, the suction opening of the raffinate hot systems are set to the side wall upper end of cooling zone, the outlet air of the raffinate hot systems Mouth is penetrated through with preheating zone.
The raffinate hot systems include the waste heat pipeline being connect with suction opening being set in the side wall of cooling zone, with it is remaining The waste heat fan of heat pipeline connection, the suction opening is close to clinkering zone.
Residual-heat heating converter is provided on the waste heat pipeline.
The smoke evacuation that the smoke evacuation system further includes the main chimney flue connecting with the smoke outlet of branch flue, is set on main chimney flue Blower is provided with cigarette lock on the branch flue.
Heat exchange equipment is provided on the main chimney flue.
The quenching system that send includes the cooling blower connecting with cooling air inlet, and the cooling air inlet is provided with Control flashboard.
Resistance to thermal circulation fan is provided in the cooling zone.
The kiln hood, preheating zone are sequentially connected and are located at same straight line, the clinkering zone, cooling zone, kiln tail according to It is secondary to be connected and be located at same straight line, the preheating zone, firing to being arranged in parallel, the entrance of the kiln hood, kiln tail out Mouth is respectively arranged with closing wicket, and the wicket track through preheating zone and cooling zone, wicket rail are provided in the tunnel oven Be provided with rail mounted wicket on road, the rail mounted wicket along wicket track have the freedom degree moved and respectively with kiln hood The closing wicket of entrance setting, the closing wicket of the outlet setting of kiln tail form feed preparation room, discharging preparation room.
The beneficial effects of the utility model are: the feed preparation room of kiln hood and kiln tail setting, discharging preparation room by kiln and Kiln is kept apart outside, prevents the cold air outside kiln from freely entering in kiln, the hot wind in kiln can not reduce heat from evolution Loss separates preheating zone and clinkering zone by closing wicket, and preheating zone is independent space, and clinkering zone and cooling zone are one Independent space opens corresponding closing wicket, otherwise closes closing wicket, further reduces heat damage when kiln car passes in and out It loses；Feed preparation room and discharging preparation room, make kiln car walk out of kiln into kiln, two in two steps, guarantee to completely cut off always in kiln with outside, have It ensure that effect the stabilization of airstream in kiln.
Smoke evacuation system extracts the high-temperature flue gas of clinkering zone outside kiln out, conveying and kiln car of the flue gas of high temperature in branch flue Direction of travel is gradually heated the blank on the kiln car of preheating zone with temperature from high to low, is done on the contrary, formation adverse current Dry, pre-heat effect is good；The hot-air that thermogenetic cleaning is changed in cooling zone is evacuated to preheating zone, using waste heat in preheating zone Blank is heated, and takes away remaining thermogenetic moisture in preheating zone, is realized the cycling and reutilization of heat, is sufficiently lowered heat The loss of amount has important environment protection significance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of arcuate channels.
Fig. 3 is the structural schematic diagram of preheating zone ventilating system.
Fig. 4 is the structural schematic diagram of clinkering zone and cooling zone ventilating system.
In attached drawing, 1, side wall, 2, vault, 3, track, 4, kiln hood, 5, preheating zone, 6, clinkering zone, 7, cooling zone, 8, kiln tail, 9, closing wicket, 10, feed preparation room, 11, discharging preparation room, 12, branch flue, 13, smoke inlet, 14, cooling air inlet, 15, Suction opening, 17, air outlet, 18, waste heat pipeline, 19, waste heat fan, 20, main chimney flue, 21, smoke exhaust fan, 22, cooling blower, 23, electronic ferry-boat parking stall, 24, wicket track, 25, rail mounted wicket, 26, air exhauster, 27, residual-heat heating converter.
The utility model relates to a kind of environment-friendly type tunnel oven, including forming the side walls 1 of arcuate channels, vault 2, bottom and setting The ventilating system on tunnel oven is set, track 3, walking side of the channel of the tunnel oven along kiln car in the channel are equipped on bottom To being divided into kiln hood 4, preheating zone 5, clinkering zone 6, cooling zone 7 and kiln tail 8, it is important to, distinguish at the kiln hood 4, kiln tail 8 It is provided with feed preparation room 10, discharging preparation room 11, closing wicket 9, institute are provided between the preheating zone 5 and clinkering zone 6 The ventilating system stated includes smoke evacuation system, send quenching system, raffinate hot systems, and the smoke evacuation system includes being set to preheating zone Branch flue 12 in 5 side wall 1, the smoke inlet 13 of branch flue 12 and the perforation of clinkering zone 6, smoke outlet be set to preheating zone 5 into Expect end, described send quenching system to connect with the cooling air inlet 14 of cooling zone 7, and the suction opening 15 of the raffinate hot systems is set It is placed in 1 upper end of side wall of cooling zone 7, the air outlet 17 of the raffinate hot systems and preheating zone 5 penetrate through.
Specific embodiment, as shown in Figure 1-3, kiln hood 4 in the present embodiment, preheating zone 5 are sequentially connected and to be located at same straight Line, the clinkering zone 6, cooling zone 7, kiln tail 8 are sequentially connected and are located at same straight line, the preheating zone 5, firing to 6 It is arranged in parallel, the outlet of the entrance, kiln tail 8 of the kiln hood 4 is respectively arranged with closing wicket 9, is arranged in the tunnel oven There is the wicket track 24 through preheating zone 5 and cooling zone 7, is provided with rail mounted wicket 25, the track on wicket track 24 Formula wicket 25 along wicket track 24 have the freedom degree that moves and respectively with the closing wicket 9 of the entrance of kiln hood 4 setting, kiln tail 8 Outlet setting closing wicket 9 formed feed preparation room 10, discharging preparation room 11.The discharge end of preheating zone 5 and clinkering zone 6 Electronic ferry-boat parking stall 23 is provided between feed end.Electronic ferry-boat parking stall 23 can make kiln car generate transverse shifting and adjustment kiln car fortune Line direction is the dried adobe kiln car in preheating zone to be sent to 6 heat temperature raising of tunnel kiln firing zone, and kiln is gone out vehicle end kiln car Transport the capital equipment of turn-around to.
Hydraulic pusher is the driving equipment that kiln car moves in kiln, it pushes the piston in oil cylinder to make straight line by oil pump feed Movement pushes kiln car to move in kiln by piston.
Return tractor is located on turn-around, it is the driving equipment that kiln car moves on turn-around.Dragger is by one Hoist engine, moving trolley composition, by hoist engine driving trolley in track intermediary movements when traction, then trolley pushes kiln car It is mobile.
Stepper is located on turn-around at hack, it can accurately move kiln car.Artificial or setting machine code what a After hack, kiln car is transported forward to the position of a hack with it, is the equipment that kiln car is accurately positioned according to the requirement of setting machine.
Outlet drawing machine be by the most back segment of Cooling Section of Tunnel Kiln 7, will kiln discharge last firing kiln car pull out tunnel The equipment of road kiln.It only draws last kiln car every time, it is therefore an objective to reserve empty parking space into vehicle for tunnel oven, kiln car is drawn by drawing machine Out after tunnel oven, sintering process is just completed.Outlet drawing machine is driven by motor, and driving power size is according on kiln car and kiln car The weight for filling brick determines.Outlet drawing machine is installed on kiln car bottom in kiln, and every tunnel oven only installs one.
Under original state, rail mounted wicket 25 is formed with the closing wicket 9 in the exit of kiln tail 8 in cooling zone 7 and is discharged Preparation room 11, discharging preparation room 11 are in idle condition, and feed preparation room 10 is in pre- Warm status.When work, open at kiln hood 4 After the closing wicket 9 of inside, kiln car are pushed into preheating zone 5, while kiln car is by going out vehicle behind preheating zone 5, rail mounted kiln is driven Door 25 enters in preheating zone 5 along wicket track 24, closing kiln of the rail mounted wicket 25 in preheating zone 5 with the inlet of kiln hood 4 Door 9 forms feed preparation room 10.The closing wicket 9 on the outside of at kiln hood 4 is opened, kiln car enters feed preparation room 10, closes kiln hood 4 Locate the closing wicket 9 in outside, and then the closing wicket 9 of the feed end of clinkering zone 6 is opened, and electronic ferry-boat handlebar kiln car ferry-boat is arrived Position, at the same at kiln hood 4 on the inside of closing wicket 9 close, kiln car enters the closing wicket 9 of the feed end of clinkering zone 6 after clinkering zone 6 It closes, kiln car successively passes through clinkering zone 6, cooling zone 7, into discharging preparation room 11；When going out vehicle by kiln tail 8, rail mounted kiln is driven Door 25 separates cooling zone 7 and kiln tail 8 along the closing wicket 9 that wicket track 24 enters in cooling zone 7 with the exit of kiln tail 8, Discharging preparation room 11 is formed, then turns on the closing wicket 9 in the exit of kiln tail 8, kiln car is run to outside kiln, finally closes kiln tail The closing wicket 9 in 8 exit, the hack on kiln car enter the firing stage, and kiln car and wicket are in next period input and output material State.Closing wicket 9, rail mounted wicket 25 separate each space, step by step into vehicle, go out vehicle, completely cuts off always outside in kiln with kiln, effectively Ground ensure that the stabilization of airstream in kiln.After closing the closing of wicket 9, it is desirable that closing wicket 9 and closing wicket 9 and side wall 1, vault 2 have good sealing performance.
The effect of ventilating system is that gas is flowed by certain direction, keeps air quantity evenly distributed on hack in kiln, supplies It to air needed for fuel combustion, is discharged in kiln and is burnt into exhaust gas, maintain temperature schedule and pressure regime certain in kiln, make in kiln Firing operation can be normally carried out.
Wherein smoke evacuation system includes the branch flue 12 being set in the side wall 1 of preheating zone 5, the smoke outlet company with branch flue 12 The main chimney flue 20 connect, the smoke exhaust fan 21 being set on main chimney flue 20, branch flue 12 are arranged successively up and down on side wall 1, branch cigarette It is located at kiln hood vicinity on road 12 and is provided with cigarette lock, controls the exhaust smoke level of smoke outlet, the smoke inlet 13 of branch flue 12 and firing Band 6 penetrates through, and the high-temperature flue gas in clinkering zone 6 is pumped into branch flue 12 by smoke exhaust fan 21, and branch flue 12 is to the sky in preheating zone 5 Gas carries out heat radiation, so that the high-temperature flue gas in branch flue 12 is conjugated low-temperature flue gas, finally imports in main chimney flue 20, flue gas is discharged Tunnel oven；The inside wall of tunnel oven is relatively thinner than outside wall thickness, is conducive to the transmitting of heat, the sky in preheating zone 5 in this way The heated heating of gas, is dried the blank on kiln car and slowly heats up, pre-heat effect is good.
The size of smoke inlet 13, the cross section diameter of upper and lower branch flue 12, main chimney flue 20, it is necessary to be produced according to kiln fuel combustion The size of raw exhausted air quantity, which calculates, to be determined, smoke exhaust fan 21 will also pacify removed flue gas how many Lectotype and calculation.
Smoke exhaust fan 21 chooses whether rationally, not only influences firing yield and quality, and is related to tunnel oven production The height of cost.When selecting smoke exhaust fan it may first have to find out pressure required for overcoming system resistance and sintering process institute The air quantity needed, then further according to the model that requirements and potentialities selection characteristic curve is gentle, use scope is wider, performance is good.Together When, it is necessary to consider the factors such as installation site, setting angle, the cost of blower.
Kiln car is entered in clinkering zone 6 by preheating zone 5, and clinkering zone 6 is fired blank, and high temperature cigarette is generated in sintering procedure Gas.
Kiln car enters cooling zone 7 after the completion of firing, and the air supply mode of cooling zone 7 has dispersion air-supply and two kinds of sides of consentrated air supply Formula, when dispersion is blown, cooling air inlet 14 is dispersed in cooling zone 7 on the side wall 1 of kiln tail 8, a part of cooling air inlet 14 It is located between two kiln cars, in order to which cold wind can enter central gangway, the product among cooling blank；When consentrated air supply, it is cooling into Air port 14 is arranged on the vault 2 of cooling zone 7 or is arranged on the closing wicket 9 of the inside of kiln tail 8, send quenching system include with The cooling blower 22 that cooling air inlet 14 connects, the cooling air inlet 14 are provided with control flashboard.Cooling blower is into kiln The cooling wind of the product cooling for high temperature is conveyed, air output size will be according to 6 fuel combustion institute required airflow of kiln clinkering zone, cooling zone Air force needed for how many waste heat can be extracted out after 7 heat Balance Calculations and this section of air quantity leak lose air quantity number etc. determine. The sum of this several respect are exactly the actual ventilation quantity of blower, when selecting blower, are converted into the standard wind of blower again according to this air quantity Amount.
Blower selected by quenching system is sent, can be centrifugal blower, is also possible to axial flow blower, according to the arrangement of kiln Mode, structure type, firing require to determine.
The air output of quenching system is sent to form tunnel kiln base pressure force balancing system to determine pressure in kiln car bottom and kiln Balance, be the place of negative pressure in kiln, it is the place of positive pressure in kiln that kiln bottom, which is also negative pressure, and kiln bottom is also positive pressure, and kiln inner pressure is small Kiln car lower part would not be scurried into the hot gas in kiln bottom pressure, such kiln.Cold wind outside same kiln will not be from sand sealing groove It leaks in people's kiln, keeps kiln interior and kiln thoroughly isolation outside.It should be pointed out that the debugging efforts of base pressure balance system are critically important: It has to be adjusted to the pressure at vehicle bottom to play pressure balance if differing pressure is too big with level comparable in kiln Effect, and opposite effect may be played.
In cooling zone 7, since air-flow velocity is little, especially transverse flow speed very little, the transverse convection coefficient of heat transfer are small.Thus Cooling effect is poor.To change this situation, resistance to thermal circulation fan can be set on 1 top of side wall of Cooling Section of Tunnel Kiln 7, cold But the hot-air of band 7 and preheating zone air form thermal cycle, cause circulating above and below for airstream in kiln, accelerate heat convection. Or special cooling duct is set on 7 two sides kiln wall of cooling zone, increase the cross-flow velocity of air-flow, accelerates convection current in kiln Heat exchange.
In cooling zone 7, the cold air of burned product and the entrance of kiln tail 8, which meets, carries out heat exchange, the air one being heated Part enters clinkering zone 6 and is used as combustion-supporting gas, and another part is extracted out by raffinate hot systems and carries out UTILIZATION OF VESIDUAL HEAT IN, this is more than tunnel oven The main path of heat utilization.
The raffinate hot systems include the waste heat pipeline connecting with suction opening 15 being set in the side wall 1 of cooling zone 7 18, the waste heat fan 19 connecting with waste heat main pipeline 18, the suction opening 15 is close to clinkering zone 6.
Since hot gas flows up, the suction opening 15 of raffinate hot systems is set to the side wall 1 of the feed end of cooling zone 7 Upper end is arranged at vault close to clinkering zone 6, is provided with gate on waste heat pipeline 18, can according to an opening degree size is explained How much heat is extracted with control, air force.The model of waste heat fan 19 is selected according to thermodynamic metering.The outlet air of raffinate hot systems 17 setting of mouth is penetrated through in 18 end of waste heat pipeline and preheating zone 5, and waste heat fan 19 extracts the heat exchange in cooling procedure, Jie of extraction Matter is cleaned air, and the cleaned air of the heat of extraction enters preheating zone 5 by air outlet 17.The feed end of preheating zone 5 is additionally provided with Air exhauster 26, the clean hot wind of cooling zone 7 is evacuated in preheating zone 5 by raffinate hot systems, by the moisture of hack by exhaust wind Machine 26 is taken out of, and the gas taken out of by air exhauster 26 also can transport into cooling zone 7 cooled down after drying.The waste heat of extraction Heat be greater than preheating zone 5 preheat required heat, therefore, residual-heat heating converter 27 is provided on waste heat pipeline 18, it is right Extra heat exchanges heat, and is adequately utilized to heat.
The inside wall of tunnel oven is relatively thinner than outside wall thickness, is conducive to the transmitting of heat, dry for the wet base of heat radiation It is dry.The valve of branch flue 12 is slide gate or butterfly valve, to control each into the hot gas extracted amount in cigarette air port 13.Smoke exhaust fan 21 is taken out The high-temperature flue gas taken also can be used as waste heat and carry out recycling and reusing, and heat exchange equipment is arranged on main chimney flue 20 and exchanges heat, is used for It exchanges heat to water, the water of heat exchange can be used for workshop heating and civil heating.
The utility model relates to a kind of environment-friendly type tunnel oven, carry out technical optimization from structure, entire kiln body is divided to two big Part, respectively preheating zone 5 and clinkering zone 6 are separated to form independent space by several roads closing wicket 9 respectively.Preheating zone 5 passes through The adobe of the high-temperature flue gas heat radiation preheating zone of clinkering zone reaches dry and slow temperature rise effect.There is independent exhaust system in preheating zone 5 System, according to temperature and pressure production requirement, the exhaust gas main component of discharge is steam, granular material discharged seldom.Clinkering zone 6 and cold But band 7 is an entire large space, and the outer air of kiln and part preheating zone circulation air enter firing by cooling zone 7 and insulation belt Band 6 is combustion-supporting, and firing exhaust gas is by branch flue 12 up and down on 5 kiln wall of preheating zone, the smoke exhaust fan 21 being sent on kiln hood 4.According to Temperature and pressure production requirement, the exhaust emissions amount that clinkering zone 6 generates is opposite to be reduced, after removing reason by environmental protection facility, Reach effects of energy saving and emission reduction.
Tunnel oven air inlet system and smoke evacuation system are improved, therefore heat utilization efficiency improves, and fuel economy is practical, heat It keeps and the utilization of waste heat reaches best, so fuel is saved very much, more other kilns can save fuel 50% or so.Firing time It shortens, relatively conventional Dayao needs 3-5 days to sky is gone out by loading of kiln, and there are about 20 hours or so to complete for tunnel oven.It saves Labour.It is easy to operate when being not only burnt into, and loading of kiln and the operation of kiln discharge carry out all outside kiln, it is also very convenient, improve operation The working condition of personnel, alleviates labor intensity.Improve quality.Preheating zone, clinkering zone, cooling zone three parts temperature, usually Certain range is kept, is easily mastered its firing rule, therefore quality is also preferable, breakage rate is also few.Kiln and kiln furnitures are all durable.Cause Not influenced by rapid heat cycle in kiln, so kiln body long service life, general 5-7 is just repaired once.
1. a kind of environment-friendly type tunnel oven, including forming side wall (1), vault (2), bottom and the setting of arcuate channels on tunnel oven Ventilating system, be equipped with track (3) on bottom, the channel of the tunnel oven is divided into along the direction of travel of kiln car in the channel Kiln hood (4), preheating zone (5), clinkering zone (6), cooling zone (7) and kiln tail (8), it is characterised in that: the kiln hood (4), kiln tail (8) it is respectively arranged with feed preparation room (10), discharging preparation room (11) at, is set between the preheating zone (5) and clinkering zone (6) It is equipped with closing wicket (9), the ventilating system includes smoke evacuation system, send quenching system, raffinate hot systems, the smoke evacuation system System includes the branch flue (12) being set in the side wall (1) of preheating zone (5), the smoke inlet (13) and clinkering zone of branch flue (12) (6) perforation, smoke outlet are set to the feed ends of preheating zone (5), the cooling air inlet for sending quenching system Yu cooling zone (7) (14) it connects, the suction opening (15) of the raffinate hot systems is set to side wall (1) upper end of cooling zone (7), the raffinate The air outlet (17) of hot systems and preheating zone (5) penetrate through.
2. a kind of environment-friendly type tunnel oven according to claim 1, it is characterised in that: the raffinate hot systems include setting The waste heat pipeline (18) being connect with suction opening (15) in the side wall (1) of cooling zone (7), connect with waste heat pipeline (18) it is remaining Air-heater (19), the suction opening (15) is close to clinkering zone (6).
3. a kind of environment-friendly type tunnel oven according to claim 2, it is characterised in that: be arranged on the waste heat pipeline (18) It has a surplus heating converter (27).
4. a kind of environment-friendly type tunnel oven according to claim 1, it is characterised in that: the smoke evacuation system further includes and props up The main chimney flue (20) of the smoke outlet connection of flue (12), the smoke exhaust fan (21) being set on main chimney flue (20), the branch cigarette Road is provided with cigarette lock on (12).
5. a kind of environment-friendly type tunnel oven according to claim 4, it is characterised in that: be provided on the main chimney flue (20) Heat exchange equipment.
6. a kind of environment-friendly type tunnel oven according to claim 1, it is characterised in that: it is described send quenching system include with it is cold But the cooling blower (22) of air inlet (14) connection, the cooling air inlet (14) are provided with control flashboard.
7. a kind of environment-friendly type tunnel oven according to claim 1, it is characterised in that: be provided in the cooling zone (7) Resistance to thermal circulation fan.
8. a kind of environment-friendly type tunnel oven according to claim 1, it is characterised in that: the kiln hood (4), preheating zone (5) It is sequentially connected and is located at same straight line, the clinkering zone (6), cooling zone (7), kiln tail (8) are sequentially connected and are located at same Straight line, the preheating zone (5), firing are arranged in parallel to (6), and the entrance of the kiln hood (4), the outlet of kiln tail (8) divide It is not provided with closing wicket (9), is provided with the wicket track through preheating zone (5) and cooling zone (7) in the tunnel oven (24), it is provided with rail mounted wicket (25) on wicket track (24), the rail mounted wicket (25) has along wicket track (24) There are mobile freedom degree and the respectively closing with the closing wicket (9) of the entrance of kiln hood (4) setting, the outlet setting of kiln tail (8) Wicket (9) forms feed preparation room (10), discharging preparation room (11).
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|CN201821697542.9U CN209181508U (en)||2018-10-19||2018-10-19||A kind of environment-friendly type tunnel oven|
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|CN201821697542.9U CN209181508U (en)||2018-10-19||2018-10-19||A kind of environment-friendly type tunnel oven|
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|WO2022116546A1 (en) *||2020-12-01||2022-06-09||信诺先端热工科技(苏州)有限公司||Tunnel kiln and conveying method|
- 2018-10-19 CN CN201821697542.9U patent/CN209181508U/en active Active
Cited By (1)
|Publication number||Priority date||Publication date||Assignee||Title|
|WO2022116546A1 (en) *||2020-12-01||2022-06-09||信诺先端热工科技(苏州)有限公司||Tunnel kiln and conveying method|
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