CN203298600U - Heat preservation device of ceramic roller kiln - Google Patents
Heat preservation device of ceramic roller kiln Download PDFInfo
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- CN203298600U CN203298600U CN2013202629108U CN201320262910U CN203298600U CN 203298600 U CN203298600 U CN 203298600U CN 2013202629108 U CN2013202629108 U CN 2013202629108U CN 201320262910 U CN201320262910 U CN 201320262910U CN 203298600 U CN203298600 U CN 203298600U
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Abstract
The utility model discloses a heat preservation device of a ceramic roller kiln. The heat preservation device of the ceramic roller kiln comprises a kiln body heat preservation component and a tube heat preservation component. The kiln body heat preservation component comprises a heat insulation composite layer, fixed pieces, supporting pieces and an iron sheet. The heat insulation composite layer is composed of an aluminum silicate fiber blanket layer and a first aerogel heat preservation blanket layer. The supporting strips are fixed outside the first aerogel heat preservation blanket layer. The iron sheet is fixed outside the supporting strips. An air layer is formed between the iron sheet and the first aerogel heat preservation blanket layer. The tube heat preservation component comprises 1-3 sets of heat preservation composite layers, fixed pieces, supporting pieces and an iron sheet. Each heat preservation composite layer is composed of a glass fiber mat layer and an aerogel heat preservation blanket layer. The heat preservation composite layers wrap the peripheral surface of a smoke tube and a hot air tube in an encircling mode set by set. The iron sheet is arranged outside the supporting strips in an encircling and wrapping mode. An annular cavity is formed between the iron sheet and an outmost aerogel heat preservation blanket and serves as an air layer. The heat preservation device of the ceramic roller kiln has the remarkable secondary heat preservation effect on a roller kiln body, and greatly reduces the heat dissipation of the smoke tube and the hot air tube.
Description
Technical field
The utility model relates to the attemperator of Industrial Stoves, is specifically related to a kind of attemperator of building ceramic roller-way kiln fabrication.
Background technology
Ceramic industry is the important conventional industries of China, and ceramic product mainly comprises architectural pottery, domestic ceramics, sanitary ceramics, special cermacis.The China no matter output of architectural pottery, sanitary ceramics or domestic ceramics, the art pottery all occupies the whole world first for years.Production of Ceramics is huge to the consumption of the energy and resource, and according to statistics, the production of annual China wall floor tile, cleaners and polishes, household china and artistic porcelain consumes about 3,440 ten thousand tons of mark coals and 12,400 ten thousand tons of raw materials altogether, has meanwhile also produced a large amount of waste gas and waste residue.Production of Ceramics, on the huge consumption of the energy, resource with on the impact of environment, has seriously restricted the development of China's pottery industry.Therefore, the sector energy-saving and emission-reduction promote the cleaner production tool and be of great significance.
Ceramic industry kiln comprises roller kilns, tunnel cave and shuttle kiln by the pattern classification.Architectural pottery has thin, flat, regular characteristics, all adopts roller kilns to burn till fast.Domestic ceramics is according to the features of product, and little and thin adopted roller kilns burn till; Large and the irregular tunnel cave that adopts burns till.The most build of sanitary ceramics is large, and is irregular, and variable thickness adopts tunnel cave or shuttle kiln production more.Special cermacis requires mostly to adopt electric roller kilns, combustion gas shuttle kiln or microwave klining to become according to pattern and the physical chemistry of product.By thermal source classification ceramic industry kiln, comprise oil-firing kiln, gas-combustion kiln, electrical kiln and microwave kiln.
Described architectural pottery refers to natural silicate raw materials such as clay, quartz through pulverizing, compressing, dry, repaired biscuit, biscuiting, glazing, the process such as burn till and the goods with definite shape and intensity that obtain, such as floor tile, wall brick etc.
In the architectural pottery production process, after ceramic base completes, in dry kiln, carry out substantially dry, after repaired biscuit, enter ceramic kiln.Roller kilns belong to the tunnel-type kiln of consecutive production, by goods, in kiln, carry out preheating, burn till, three cooling processes are divided into three bands by roller kilns: preheating zone, clinkering zone, salband.Because the outer full kiln of wide size of roller kilns is generally unchanged, so roller kilns are generally divided by products temperature: kiln hood to 850 ℃～900 ℃ is as preheating zone, and 850 ℃～900 ℃ become porcelain temperature (comprising insulation) to goods is clinkering zone, the uncolled band of remaining part.
The work system of roller kilns, refer to and the moving line of gas in kiln comprise supply air system, fuel system and smoke evacuation system etc.Roller kilns type difference, work system are also different.See Fig. 1, Figure 1 shows that gas burns the work system figure of flaming roller kilns; Full kiln is totally 29 joints, and wherein 1～4 joint is the smoke evacuation section, at the bottom of by upper and lower each 4 pairs of smoke exhaust pipes, being distributed in Yao Ding and kiln, by smoke exhaust fan 101, released from the flue gas of clinkering zone.A flue gas part of extracting out is emptying, and a part is delivered to dry kiln for the green compact preheating and drying or delivered to preheating zone.The every joint roller of 5th～9 joint is upper and lower is provided with a burner; The every joint roller of 10th～14 joint is upper and lower establishes 1 pair of burner; All burners are all taked the offside interlaced arrangement.15th～18 joints become the porcelain district for high temperature, and burner is arranged closeer, the upper and lower 2 pairs of burners that are crisscross arranged of every joint roller.Coal gas is sent into respectively each burner by gas station 102 through gas main and arm, and combustion air is sent into burner by combustion fan 103 through airduct.19th～20 joints, for quench zone, are sprayed into cold wind in kiln by 8 pairs of upper and lower chilling airducts of roller by chilling blower fan 104, and the goods top and bottom blowing is carried out to chilling.21st～24 sections is slow cooling section, at the every joint kiln body of 22nd～25 joint, all is provided with up and down and takes out hot blast and be in charge of, and by taking out air-heater 105, from house steward, entering the waste heat wind of being in charge of, extracts out, after a flue gas that preheating zone smoke evacuation section is discharged mixes, as the thermal source of dry kiln.In the end on a joint kiln body, upper and lowerly respectively establish three axial flow cooling gas in the kiln outlet fans 106, blowing is forced coldly soon to product, makes product kiln discharge temperature unlikely too high.
The kiln body of flaming formula roller kilns surrounds the De Yao road at the bottom of by Yao Qiang, Yao Ding and kiln and forms.The roller 201 that passes in individual layer flaming roller kilns ，Yao road as shown in Figure 2 forms the service aisle bottom surface, and the above De Yao of roller plane road is called service aisle.
In sum, in the Production of Ceramics process, the high-temperature flue gas of drawing from the kiln cooling section, in warm-air pipe causes dry kiln, carries out basic drying to blank, so the insulating power of warm-air pipe and dry kiln is one of influence factor of ceramic energy consumption.The heat insulation effect of existing pipeline is poor, and pipeline external iron sheet temperature is higher than 120 ℃, and heat radiation is serious.In addition, in the kiln preheating zone, by combustion zone, guided into the part high-temperature flue gas of kiln import, the blank that enters kiln is carried out to further drying and preheating.Like this, the insulation situation on the preheating zone of ceramic kiln, the Yao Qiang of clinkering zone and kiln top, be the important factor in order of ceramic energy consumption.
Chinese patent literature CN2893600Y(application number 200620084038.8) disclose a kind of energy saving roller kiln, the insulation of furnace wall brick adopts bilayer/multilayer, between the burner hearth outside or two insulating bricks, is provided with heat-preservation cotton, and the fiery pond of insulation is set up in high temperate zone.Its Insulation, mainly for the kiln body, is not considered the insulation of warm-air pipe; And insulation of furnace wall complex structure, heat bridge are many, and the kiln wall thickness is large.
For the insulation material of kiln body and warm-air pipe, its thermal conductivity is lower, and the heat radiation of kiln body is fewer, and material is lighter, and heat accumulation of kiln is fewer.The application on ceramic kiln of high-performance insulation material or heat-insulating material, will have a revolutionary change the kiln wall construction of ceramic kiln; Not only can reduce the heat radiation of holding of kiln wall, and the thickness of attenuate kiln wall significantly, make simplifying the structure of kiln wall.It is reported, adopt the light ceramics fiber as insulation material, the total energy consumption that can make kiln drops to 9.02% from 20.6%, energy-conservationly reaches 16.67%.Again for example, Mo Dena company has adopted external state-of-the-art nanometer micropore warming plate, greatly reduces the radiation loss of kiln body.
In recent years, scientist has invented the super insulating material based on new adiabatic principle, and its thermal conductivity factor is significantly less than air.Super insulating material has two kinds at present: vacuum heat insulation materials and aerogel material.Vacuum heat insulation materials be because must work under extremely low vacuum pressure, and vacuum diaphragm can not bear high temperature, and use is restricted.Aerogel material has its special nanometer porous structure, from adiabatic principle, broken through conventional insulation material, take at present most widely used aerosil as example, aerosil is comprised of the three-dimensional net structure material that comprises a large amount of nanoscales hole, the diameter of its skeleton structure is several nanometers, and main component is silica, contains the hole of 20 a large amount of～50nm, wherein volume of air accounts for more than 90%, is the solid material that density is minimum in the world, thermal conductivity factor is minimum at present; These characteristics determined aeroge new way of realization is being arranged stoping aspect hot transmission: (major part is 20～50nm) less than air molecule free path (70nm), has greatly weakened air molecule generation thermalizing collision and the heat conduction that forms in the aperture of the nanoscale hole of (1) aeroge.(2) air in the nanoscale hole can not flow freely, and has eliminated the inner air convection heat transfer' heat-transfer by convection.(3) up to the composition more than 80%, be air, solid constituent is few, and skeleton is fine, and heat conduction path is elongated, thereby greatly reduces the solid thermal conduction velocity.(4) inside exists a large amount of gas-solid interfaces to have the antiradiation effect, adds while manufacturing and has added special opacifier, has greatly intercepted heat radiation.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of attemperator of ceramic roller kiln.
The technical scheme that realizes the utility model purpose is a kind of attemperator of ceramic roller kiln, comprises insulation of furnace wall part and pipe insulation part.
Described insulation of furnace wall part comprises heat insulation composite bed, fixture, support bar and iron sheet; Heat insulation composite bed is comprised of alumina silicate fibre blanket layer and the first aeroge insulation blanket layer; Alumina silicate fibre blanket layer and the first aeroge insulation blanket layer are laid on the lateral surface at position that all that cover ceramic roller kiln kiln body arrange heat-insulation layer successively according to order from inside to outside, fixture is arranged on outside the first aeroge insulation blanket layer, makes that heat insulation composite bed is compacted, compacting is on the lateral surface of the heat-insulation layer of ceramic roller kiln; Described heat-insulation layer is the silica heat-insulating material layer that is arranged on the outer wall of ceramic roller kiln kiln body.
Support bar is fixed on outside the first aeroge insulation blanket layer, and support bar is the airsetting adhesive tape that 1 layer or 2 layers of width stacking are 1～3cm, on the first aeroge insulation blanket layer, every 0.5～1.0 meter, arranges one abreast; Described airsetting adhesive tape is by aeroge insulation blanket cutting slivering.
Iron sheet is fixed on the outside of support bar, and iron sheet is parallel with the first gel insulation blanket layer, between iron sheet and the first aeroge insulation blanket layer, forms air layer.
Described pipe insulation part comprises 1～3 group of insulating composite layer, fixture, support bar and iron sheet; The pipe insulation part is arranged on the outer surface of fume pipe and warm-air pipe, and fume pipe is connected with the smoke exhaust fan of roller kilns work system, and warm-air pipe is connected with the air-heater of taking out of roller kilns work system.
Insulating composite layer is comprised of the gentle gel insulation blanket of glass fibre carpet veneer layer; Wrapped on the outer surface of fume pipe and warm-air pipe by group successively according to order insulating composite layer from the inside to the outside, and tie up and be fixed on pipeline by group by fixture.
The 2 layer airsetting adhesive tape of support bar for being about 1～3 centimetre 1 layer or stacking around the width on the outermost layer aeroge insulation blanket that is fixed on insulating composite layer, support bar on fume pipe and warm-air pipe every 0.6～1.0 meter setting.
Iron sheet is wrapped in the support bar outside, formation toroidal cavity as air layer between iron sheet and outermost layer aeroge insulation blanket.
The thickness of described airsetting adhesive tape is 0.6cm～1.5cm.
Described insulation of furnace wall part also comprises insulating composite layer; Insulating composite layer is arranged between heat insulation composite bed and fixture, and fixture makes insulating composite layer and heat insulation composite bed is compacted according to the order of ecto-entad, compacting is on the heat-insulation layer of roller kiln body; Described insulating composite layer is comprised of the gentle gel insulation blanket of glass fibre carpet veneer layer, and aeroge insulation blanket layer is laid on the lateral surface of glass fibre carpet veneer.
The insulating composite layer of described insulation of furnace wall part comprises single insulating composite layer, two insulating composite layer and triple insulating composite layer; Single insulating composite layer is set gradually and forms according to from inside to outside order by the first glass fibre carpet veneer and the second aeroge insulation blanket layer; Two insulating composite layers are set gradually and form according to from inside to outside order by the first glass fibre carpet veneer, the second aeroge insulation blanket layer, the second glass fibre carpet veneer and the 3rd aeroge insulation blanket layer; Triple insulating composite layers also comprise the one group of gentle gel insulation blanket of glass fibre carpet veneer layer outside the 3rd aeroge insulation blanket layer.
Described insulation of furnace wall layer comprises that temperature that the appearance temperature is the middle warm area heat-insulation layer of 70 ℃～90 ℃ and appearance greater than high-temperature region heat-insulation layer, the appearance temperature of 90 ℃ is the low-temperature space heat-insulation layer of 50 ℃～70 ℃; The heat preservation member that is positioned at heat-insulation layer place, high-temperature region of insulation of furnace wall part is the high-temperature region heat preservation member, and the heat preservation member that is arranged in warm area heat-insulation layer place is the warm area heat preservation member, and the heat preservation member that is positioned at low-temperature space heat-insulation layer place is the low-temperature space heat preservation member; When the appearance temperature of described heat-insulation layer referred to the roller kilns operation, its heat-insulation layer was exposed to the temperature of airborne appearance.
As preferably, the aeroge insulation blanket of the first aeroge insulation blanket layer of the heat insulation composite bed of kiln height warm area heat preservation member is high temperature modification aeroge insulation blanket; Insulating composite layer is two insulating composite layers or triple composite heat-insulating layer, the aeroge insulation blanket of the aeroge insulation blanket layer of the inboard of two insulating composite layers or triple composite heat-insulating layers is high temperature modification aeroge insulation blanket, and the aeroge insulation blanket of outermost aeroge insulation blanket layer is middle warm type aeroge insulation blanket.
As preferably, in the kiln body, the aeroge insulation blanket of the first aeroge insulation blanket layer of the heat insulation composite bed of warm area heat preservation member is high temperature modification aeroge insulation blanket; Insulating composite layer is single insulating composite layer, and the aeroge insulation blanket of the second aeroge insulation blanket layer of single insulating composite layer is middle warm type aeroge insulation blanket.
Described aeroge insulation blanket thermal conductivity factor at normal temperatures is 0.012～0.023W/mK; Described aeroge insulation blanket is the heat-insulating material that is obtained after the heat resistance fiber skeletons such as ultra-fine fibre glass are compound by aeroge, aeroge wherein can be aerosil, alumina aerogels, titania aerogel, zirconia aerogels, can be also one or both or three kinds or four kinds of gaseous mixture gels that aeroge forms in above-mentioned aeroge.
Further, attemperator also comprises the roller gap heat preservation member, and described roller gap heat preservation member is made with hard aerogel heat-insulating material, and the shape in the gap of the shape of roller gap heat preservation member and roller and roller matches, and is tight with the roller laminating.
The utlity model has positive effect: when (1) inventor of the present utility model finds the thermal conductivity factor normal temperature (take 25 ℃ as standard) of silica heat-insulating material (for example aluminium silicate wool) of the formation roller kiln body heat-insulation layer in prior art all more than 0.05W/mK, at high temperature thermal conductivity factor is higher, for example in the time of 500 ℃, its thermal conductivity factor is greater than 0.2W/mK, and find in practice: even increase the thickness of insulation material, also without obvious effect of heat insulation.Because heat-insulation layer has completely cut off most of heat, those skilled in the art is often when the heat-insulating property of heat-insulation layer descends, the heat-insulation layer that just more renews, perhaps the formula of heat-insulation layer is adjusted, and can not further consider again and cover one deck aeroge insulation blanket layer, even if consider the thickness of the existing insulation material of thickening or the insulation material of the similar material of increase one deck, also will abandon because of DeGrain.The basic structure of attemperator of the present utility model is in the existing heat-insulation layer outside, first lay and cover one deck alumina silicate fibre blanket layer, and then laying covers one deck aeroge insulation blanket layer, because the aeroge insulation blanket of aeroge insulation blanket layer is the heat-insulating material that is obtained after the heat resistance fiber skeletons such as ultra-fine fibre glass are compound by aeroge, thermal conductivity factor at normal temperatures is only 0.012～0.023W/mK, the amplification of thermal conductivity factor at high temperature is much smaller than traditional insulation material, for example, in the time of 500 ℃, its thermal conductivity factor is about 0.045W/mK.As can be seen here, the utility model for roller kiln, has played beyond thought effect by the aeroge insulation blanket aspect heat insulation effect.
(2) the insulation of furnace wall layer of traditional structure in use for some time, can expand with heat and contract with cold along with the variations in temperature of ceramic roller kiln, thereby produce certain small crack, and the existence in these gaps can cause flowing of air, and affects heat insulation effect.If direct all standing formula is laid the aeroge insulation blanket on the surface of heat-insulation layer, can take away a large amount of heats because of the existence in gap, thereby reduce heat insulation effect.Attemperator of the present utility model arranges certain thickness alumina silicate fibre blanket layer (its thickness is preferably 20 to 30 millimeters), above-mentioned gap can be covered, itself and extraneous space are isolated, and it is comparatively even to make heat distribute, thereby provides prerequisite guaranteed conditions for the insulation effect of performance aeroge insulation blanket.
(3) attemperator of the present utility model is after covering one deck certain thickness aeroge insulation blanket layer (its thickness is preferably 5 to 15 millimeters) is laid in the outside of alumina silicate fibre blanket layer, make the heat of the outside conduction of heat-insulation layer of traditional structure after the conduction of alumina silicate fibre blanket layer, have quite a few isolated by aeroge insulation blanket layer, by aeroge insulation blanket layer, to extraradial heat, greatly reduced, make the temperature of alumina silicate fibre blanket layer compare and be greatly improved with the temperature of the outer surface of the heat-insulation layer of traditional structure.Take the highest temperature of clinkering zone be 1200 ℃ as example, while not adding attemperator of the present utility model, the temperature of its heat-insulation layer outer surface is about 100 ℃ to 120 ℃, after being provided with the attemperator of aeroge insulation blanket layer of individual layer of the present utility model, it is 400 ℃ of left and right that the temperature of this heat-insulation layer outer surface raises, the thermograde of heat-insulation layer greatly reduces, and is more thereby thermal stress wherein also descends, and the appearance in the crack of heat-insulation layer also greatly reduces thereupon.When two layers of attemperator employings of the present utility model or the more aeroge insulation blanket of number of plies layer, roller kilns internal delivery to the heat of heat-insulation layer can make its temperature further raise, and make the thermal stress of heat-insulation layer further descend, thereby make the crack of heat-insulation layer substantially eliminate.This is another beyond thought technique effect of attemperator of the present utility model.
(4) attemperator of the present utility model is for the roller kiln wall, after the reinforcing steel bar that removes between the column that is connected to steel construction, on the existing heat-insulation layer of ceramic roller kiln, lay and cover alumina silicate fibre blanket layer and aeroge insulation blanket layer successively, and realize after corresponding fixture is set; Layers of material can directly be laid in the roller kiln top, and the weight compacting gets final product.Attemperator of the present utility model also need to increase by 1 to 3 insulating composite layer that is comprised of the gentle gel insulation blanket of glass fibre carpet veneer layer according to heat insulation between the first aeroge insulation blanket layer and fixture.
(5) when attemperator of the present utility model arranges insulating composite layer as required, between adjacent aeroge insulation blanket layer, the layer of glass carpet veneer is set, the heat that the existence of this glass fibre carpet veneer can be transmitted the aeroge insulation blanket layer of internal layer is reflected back in the aeroge insulation blanket layer of internal layer with the form of radiation, thereby improves its inboard temperature and stop the outside conduction of heat.
(6) attemperator of ceramic roller kiln of the present utility model, according to temperature and the heat radiation situation of the different parts of roller kiln body, is adjusted the number of insulating composite layer.For the high-temperature region of kiln body, 2 to 3 insulating composite layers are installed; For the middle low-temperature space of kiln body, use 1 to 2 insulating composite layer, or do not use insulating composite layer.And the aeroge insulation blanket layer at the heat insulation composite bed at the higher position of temperature, preferably use high temperature modification aeroge insulation blanket, and for the aeroge insulation blanket that is positioned at outermost insulating composite layer herein, warm type aeroge insulation blanket in preferred the use; And at the lower position of temperature, even the aeroge insulation blanket layer of its heat insulation composite bed also only need in warm type aeroge insulation blanket get final product.This configuration reaches the heat insulation effect of the best on the one hand with adjustment, makes effect of heat insulation reach best, and ceramic roller kiln only needs less fuel combustion just can remain the technological temperature in kiln, thereby realizes energy-conservation; Make on the other hand the consumption of aeroge insulation blanket rationalize, reduce unnecessary waste, reduce costs.
(7) attemperator of ceramic roller kiln of the present utility model uses in the outside of the heat-insulation layer of traditional ceramics roller kilns, take roller kilns, burn till band as example, while not using attemperator, the temperature of ceramic roller kiln clinkering zone heat-insulation layer is up to 150 ℃, after using attemperator, 60 ℃～80 ℃ of attemperator outer surface, and make the heat dissipation capacity of the heat-insulation layer of original roller kilns reduce 50%～70%, therefore attemperator of the present utility model is remarkable to the secondary heat insulation effect of ceramic roller kiln.
(8) embodiment of the attemperator of ceramic roller kiln of the present utility model 2 is applied on ceramic production line, through the data tracking of 6 months, determines that finally fractional energy savings is 6.16%.
(9) China's architectural pottery production capacity high occupying first place in the world for years, so the energy-saving potential of China's ceramic roller stove is very large.Aeroge is rationally applied to ceramic roller kiln, carry out exploitation and the popularization of power-saving technology, will lead ceramic industry to complete the target for energy-saving and emission-reduction of " industrial enterprise general energy-conservation 20% ", have good Social benefit and economic benefit.
The accompanying drawing explanation
Fig. 1 is the work system figure that gas burns the flaming roller kilns, the syndeton of fume pipe not shown in FIG. and warm-air pipe and dry kiln;
Fig. 2 is the kiln body schematic diagram of individual layer flaming roller kilns;
Fig. 3 is the first schematic diagram of insulation of furnace wall part of the attemperator of ceramic roller kiln;
Fig. 4 is the second schematic diagram of insulation of furnace wall part of the attemperator of ceramic roller kiln;
Fig. 5 is the third schematic diagram of insulation of furnace wall part of the attemperator of ceramic roller kiln;
Fig. 6 is the structural representation of pipe insulation part of the attemperator of ceramic roller kiln;
Mark in above-mentioned accompanying drawing is as follows:
Heat-insulation layer 300, preheating zone kiln wall heat-insulation layer 301, clinkering zone leading portion kiln wall heat-insulation layer 302, clinkering zone back segment kiln wall heat-insulation layer 303;
Heat insulation composite bed 500, alumina silicate fibre blanket layer 501, the first aeroge insulation blanket layer 502;
Insulating composite layer 600, single insulating composite layer 600a, two insulating composite layer 600b, the first glass fibre carpet veneer 601, the second aeroge insulation blanket layer 602, the second glass fibre carpet veneer 603, the three aeroge insulation blanket layer 604;
Fixture 701, support bar 702, iron sheet 703;
The specific embodiment
(embodiment 1)
See Fig. 1,3 and 6, the attemperator of the ceramic roller kiln of the present embodiment is the attemperator that gas burns the flaming roller kilns, comprises insulation of furnace wall part and pipe insulation part.
See Fig. 3, the insulation of furnace wall part comprises heat insulation composite bed 500, fixture 701, support bar 702, iron sheet 703.Heat insulation composite bed 500 is comprised of alumina silicate fibre blanket layer 501 and the first aeroge insulation blanket layer 502.
Alumina silicate fibre blanket layer 501 and the first aeroge insulation blanket layer 502 are laid on the lateral surface at position that all that cover ceramic roller kiln kiln body arrange heat-insulation layer 300 successively according to order from inside to outside, fixture 701 is arranged on outside the first aeroge insulation blanket layer 502, makes that heat insulation composite bed 500 is compacted, compacting is on the lateral surface of the heat-insulation layer 300 of ceramic roller kiln.Described heat-insulation layer 300 is the silica heat-insulating material layer on the outer wall that is arranged on ceramic roller kiln kiln body in prior art.When the insulation of furnace wall part of the present embodiment is installed, former heat-insulation layer 300 is removed to certain thickness, abdicate the heat insulation composite bed 500 of a part of space mounting; Perhaps the steel construction of roller kilns is stretched out, slot milling is installed heat insulation composite bed 500.
Alumina silicate fibre blanket layer 501 forms the type of attachment of preferred overlap joint by alumina silicate fibre blanket splicing or overlap joint.Described overlap joint is at the position, edge of the alumina silicate fibre blanket of having laid and the other alumina silicate fibre blanket of the partial coverage of not laying alumina silicate fibre blanket of heat-insulation layer 300, and outer overlapping part with the internal layer alumina silicate fibre blanket is overlapping part.Alumina silicate fibre blanket is also referred to as alumina silicate fibre insulation blanket, alumina silicate fibre blanket, alumina silicate insulation blanket or alumina silicate blanket etc.The present embodiment alumina silicate fibre blanket used is the standard type alumina silicate fibre blanket that Shandong Luyang share co.,ltd manufactures, and its thickness is 25 millimeters.The alumina silicate fibre blanket that forms alumina silicate fibre blanket layer 501 cuts and obtains the alumina silicate fibre blanket of rolling as required.
The first aeroge insulation blanket layer 502 forms the type of attachment of preferred overlap joint by aeroge insulation blanket splicing or overlap joint.The aeroge insulation blanket is the heat-insulating material that is obtained after the heat resistance fiber skeletons such as ultra-fine fibre glass are compound by aeroge, and thermal conductivity factor at normal temperatures is 0.012～0.023W/mK.Described aeroge can be aerosil, alumina aerogels, titania aerogel or zirconia aerogels, can be also one or both or three kinds or four kinds of gaseous mixture gels that aeroge forms in above-mentioned aeroge.Although above-mentioned aeroge kind difference, but the general character with aeroge, comprise that nanoscale hole separately is the gas-solid interface that air, solid constituent are few, skeleton is fine, heat conduction path is elongated and inner existence is a large amount of less than the air molecule free path, up to the composition more than 80%.The aeroge insulation blanket be used to forming the first aeroge insulation blanket layer 502 of the present embodiment is the aerosil insulation blanket, and its thickness is 6 millimeters, for following day RunAG650 type aeroge insulation blanket of energy-conservation Science and Technology Ltd. manufacture in Changzhou.This aeroge insulation blanket is high temperature modification aeroge insulation blanket, high temperature that can anti-650 ℃.
Described fixture 701 comprises compressing member and weight.Compressing member is angle steel, I-steel or tabular steel bar.Compressing member is weldingly fixed on the iron and steel column of roller kilns after heat insulation composite bed 500 being pressed on the lateral surface of heat-insulation layer 300 of roller kiln wall again; Weight is positioned on the heat insulation composite bed 500 that is laid on the kiln top, thereby should compress compacting above the kiln top by heat insulation composite bed 500, and described weight is fragment of brick or band iron or sand.
In the present embodiment, take burning zone temperature be 1200 ℃ as example, while not adding attemperator of the present utility model, the temperature of the outer surface of the heat-insulation layer 300 of its kiln body of wall is about 100 ℃ to 120 ℃, after being provided with above-mentioned heat insulation composite bed 500 of the present utility model, it is 400 ℃ of left and right that the temperature of heat-insulation layer 300 outer surfaces raises, and the thermograde of heat-insulation layer 1 greatly reduces, it is more that thereby thermal stress wherein also descends, and the appearance in the crack of heat-insulation layer 300 also greatly reduces thereupon.This is a beyond thought technique effect of attemperator of the present utility model.
By goods, in kiln, carry out preheating, burn till, three cooling processes are divided into three bands by roller kilns: preheating zone, clinkering zone, salband.Insulation of furnace wall layer 300 comprises high-temperature region heat-insulation layer, middle warm area heat-insulation layer and low-temperature space heat-insulation layer.When attemperator of the present utility model is not set, can using the appearance temperature of heat-insulation layer 300 greater than the zone of 90 ℃ as the high-temperature region heat-insulation layer, specifically comprise clinkering zone back segment kiln wall heat-insulation layer 303 and clinkering zone leading portion kiln closure insulation; Using the appearance temperature of heat-insulation layer 300 be 70 ℃～90 ℃ zone as in the warm area heat-insulation layer, specifically comprise clinkering zone leading portion kiln wall heat-insulation layer 302 and clinkering zone leading portion kiln closure insulation; And using the temperature of the appearance of heat-insulation layer 300 be the zone of 50 ℃～70 ℃ as the low-temperature space heat-insulation layer, specifically comprise preheating zone kiln wall heat-insulation layer 301 and preheating zone kiln closure insulation.When the appearance temperature of described heat-insulation layer 300 referred to the roller kilns operation, its heat-insulation layer 300 was exposed to the temperature of airborne appearance.After using attemperator of the present utility model, according to the height difference of the internal temperature of its present position, correspondingly be divided into successively high-temperature region heat preservation member, middle warm area heat preservation member and low-temperature space heat preservation member, be also that the high-temperature region heat preservation member is arranged on outside the heat-insulation layer of high-temperature region, middle warm area heat preservation member is arranged on outside middle warm area heat-insulation layer, and the low-temperature space heat preservation member is arranged on outside the low-temperature space heat-insulation layer.
For the high-temperature region heat preservation member, the temperature of its iron sheet 703 outer surfaces can be reduced to 55 ℃～60 ℃; For middle warm area heat preservation member, the temperature of its iron sheet 703 outer surfaces can be reduced to 50 ℃ of left and right; For the low-temperature space heat preservation member, the temperature of its iron sheet 703 outer surfaces can drop to 40 ℃～50 ℃.By data, can find out obviously that the insulation of furnace wall part plays significant secondary heat insulation effect.
See Fig. 6, described pipe insulation part comprises insulating composite layer 600, fixture, support bar 702 and iron sheet 703, and fixture is iron wire.The pipe insulation part is arranged on the outer surface of fume pipe 401 and warm-air pipe 402, and fume pipe 401 is connected with smoke exhaust fan 101, warm-air pipe 402 with take out air-heater 105 and be connected.
Insulating composite layer 600 is comprised of the first glass fibre carpet veneer 601 and the second aeroge insulation blanket layer 602.The first glass fibre carpet veneer 601 and the second aeroge insulation blanket layer 602 are wrapped on the outer surface of fume pipe 401 and warm-air pipe 402 by group successively according to order from the inside to the outside, and are tied up and be fixed on pipeline by group by iron wire.
The first glass fibre carpet veneer 601 glass mat used of the present embodiment is the thick glass fibre cotton felt of 3mm that Tianmo Group Co., Ltd., Changzhou manufactures.The second aeroge insulation blanket layer 602 aeroge insulation blanket used is silica high temperature modification aeroge insulation blanket, and its thickness is 6 millimeters, for following day RunAG650 type aeroge insulation blanket of energy-conservation Science and Technology Ltd. manufacture in Changzhou.This aeroge insulation blanket can anti-650 ℃ high temperature.
According to concrete service condition, also can increase and use insulating composite layer 600, for example use 2 groups or 3 groups of insulating composite layers 600.According to service condition and for cost consideration, warm type aeroge insulation blanket during the aeroge insulation blanket of the 2nd group and the 3rd group can use.The present embodiment uses 3 groups of insulating composite layers.
For warm-air pipe 402, while adopting traditional insulation construction, the temperature of heat-insulation layer outer surface is 100 ℃～120 ℃, and environment temperature is 50 ℃.Use the heat preservation member of the present embodiment, the temperature on the surface of pipeline 1 drops to below 60 ℃ by original 100 ℃～120 ℃, and environment temperature is 40 ℃.The pipe insulation part of the present embodiment has significantly reduced the heat radiation of fume pipe and warm-air pipe.
(embodiment 2)
See Fig. 4 and Fig. 5, the remainder of the present embodiment is identical with embodiment 1, and difference is: the insulation of furnace wall part of the present embodiment also comprises insulating composite layer 600.Insulating composite layer 600 is divided into single insulating composite layer 600a, two insulating composite layer 600b and triple insulating composite layer according to the difference of the quantity of the gentle gel insulation blanket of the glass fibre carpet veneer layer that comprises.Single insulating composite layer 600a only has 1 composite bed, also namely by the first glass fibre carpet veneer 601 and the second aeroge insulation blanket layer 602, according to from inside to outside order, is set gradually and forms.Two insulating composite layer 600b have 2 composite beds, also namely by the first glass fibre carpet veneer 601, the second aeroge insulation blanket layer 602, the second glass fibre carpet veneer 603 and the 3rd aeroge insulation blanket layer 604, according to from inside to outside order, are set gradually and form.Triple insulating composite layers also comprise the one group of gentle gel insulation blanket of glass fibre carpet veneer layer outside the 3rd aeroge insulation blanket layer 604.Insulating composite layer 600 is arranged between heat insulation composite bed 500 and fixture 701, and fixture 701 makes insulating composite layer 600 and heat insulation composite bed 500 is compacted according to the order of ecto-entad, compacting is on the heat-insulation layer 300 of roller kiln body.
See Fig. 5, the insulating composite layer 600 of the kiln height warm area heat preservation member of the ceramic roller kiln of the present embodiment is two insulating composite layer 600b, and two insulating composite layer 600b are arranged on outside the first aeroge insulation blanket layer 502 of heat insulation composite bed 500.
The first glass fibre carpet veneer 601 in two insulating composite layer 600b of high-temperature region heat preservation member is connected and composed by the mode of glass mat with overlap joint, and the second glass fibre carpet veneer 603 is is also connected and composed by the mode of corresponding glass mat with overlap joint.And in the present embodiment, the first glass fibre carpet veneer 601 is identical with the source of the glass mat that the second glass fibre carpet veneer 603 adopts, and is the thick glass fibre cotton felt of 3mm that Tianmo Group Co., Ltd., Changzhou manufactures.
The second aeroge insulation blanket layer 602 in two insulating composite layer 600b of high-temperature region heat preservation member is connected and composed in the mode that overlaps by the thick high temperature modification aeroge insulation blanket of 6mm.This high temperature modification aeroge insulation blanket is identical with the source of the aeroge insulation blanket of the first aeroge insulation blanket layer 502 of above-mentioned high-temperature region attemperator.The 3rd aeroge insulation blanket layer 604 is that the middle warm type aeroge insulation blanket of 6mm connects and composes in the mode that overlaps by thickness, should middle warm type aeroge insulation blanket be the aerosil insulation blanket, for following the RunAG380 type aeroge insulation blanket that day energy-conservation Science and Technology Ltd. manufactures in Changzhou, the high temperature that this aeroge insulation blanket can anti-380 ℃.each lap-joint of the first glass fibre carpet veneer 601 of two insulating composite layer 600b of high-temperature region attemperator is with respect to the setting of staggering of the first corresponding lap-joint of aeroge insulation blanket layer 502 with its heat insulation composite bed 500 adjacent in inside, each lap-joint of the second aeroge insulation blanket layer 602 of two insulating composite layer 600b with respect to the setting of staggering of its first glass fibre carpet veneer 601 corresponding lap-joint adjacent in inside, each lap-joint of the second glass fibre carpet veneer 603 of two insulating composite layer 600b is with respect to the setting of staggering of the corresponding lap-joint with its second adjacent aeroge insulation blanket layer 602 in inside, each lap-joint of the 3rd aeroge insulation blanket layer 604 of two insulating composite layer 600b is with respect to the setting of staggering of the corresponding lap-joint with its second adjacent glass fibre carpet veneer 603 in inside, also namely when laying each glass fibre carpet veneer, lap-joint to the aeroge insulation blanket layer that is in internal layer carries out lapped layup according to the mode that staggers, when laying each aeroge insulation blanket layer of two insulating composite layer 600b, the lap-joint of the glass fibre carpet veneer that is in internal layer is also carried out to lapped layup according to the mode that staggers.
The fixture 701 of high-temperature region heat preservation member directly contacts with the 3rd aeroge insulation blanket layer 604 of two insulating composite layer 600b.The 3rd aeroge insulation blanket layer 604 for the facade position that is positioned at the kiln wall, after on the heat-insulation layer 300 that two insulating composite layer 600b that the compressing member of fixture 701 will set gradually from outside to inside and heat insulation composite bed 500 are pressed on body of wall, then be weldingly fixed on the iron and steel column of roller kilns; To being positioned at kiln top the 3rd aeroge insulation blanket layer 604, two insulating composite layer 600b that the weight of fixture 701 such as fragment of brick will set gradually from outside to inside and heat insulation composite bed 500 compress compacting on the heat-insulation layer 1 that is positioned at place, kiln top.
See Fig. 4, in the kiln body, the structure of the structure of warm area heat preservation member and above-mentioned high-temperature region heat preservation member is basic identical, and difference is: the insulating composite layer 600 of middle warm area heat preservation member is single insulating composite layer 600a, rather than two insulating composite layer 600b.The aeroge insulation blanket of the second aeroge insulation blanket layer 602 of single insulating composite layer 600a is middle warm type aeroge insulation blanket, and its source is identical with the source of the middle warm type aeroge insulation blanket of the 3rd aeroge insulation blanket layer 604 of two insulating composite layer 600b of high-temperature region attemperator.The fixture 701 of middle warm area attemperator directly contacts with the second aeroge insulation blanket layer 602 of single insulating composite layer 600a, thereby single insulating composite layer 600a that will set gradually from outside to inside and heat insulation composite bed 500 are fixed on the corresponding heat-insulation layer 300 of roller kilns.
The structure of the low-temperature space heat preservation member of the kiln body of the roller kilns of the present embodiment only has heat insulation composite bed 500, insulating composite layer 600 is not set, and the aeroge insulation blanket of the first aeroge insulation blanket layer 502 of heat insulation composite bed 500 is middle warm type aeroge insulation blanket, and its source is identical with the source of the middle warm type aeroge insulation blanket of the 3rd aeroge insulation blanket layer 604 of two insulating composite layer 600b of high-temperature region attemperator.
Be provided with the roller kilns of above-mentioned insulation of furnace wall part in production and application, the exospheric temperature of its high-temperature region drops to 50 ℃～60 ℃ by original 80 ℃～110 ℃, and the temperature of middle warm area drops to 45 ℃～50 ℃ by original temperature 70 C～80 ℃.
(embodiment 3)
The remainder of the present embodiment is identical with embodiment 1, and difference is: the attemperator of the ceramic roller kiln of the present embodiment also comprises the roller gap heat preservation member.
Described roller gap heat preservation member is made with hard aerogel heat-insulating material, and the shape in the gap of the shape of roller gap heat preservation member and roller and roller matches, and is tight with the roller laminating.The present embodiment hard aerogel heat-insulating material used is that day RunAG1000-10 type hard aeroge of energy-conservation Science and Technology Ltd. manufacture is followed in Changzhou.
Gap heat radiation between roller of the prior art and roller is serious, generally with the alumina silicate loose wool, stop up, and the alumina silicate loose wool is often burnt, and needs change once in one month.And the roller gap heat preservation member can keep using about 1 year and not lose efficacy.
Claims (8)
1. the attemperator of a ceramic roller kiln, is characterized in that: comprise insulation of furnace wall part and pipe insulation part;
Described insulation of furnace wall part comprises heat insulation composite bed (500), fixture (701), support bar (702) and iron sheet (703); Heat insulation composite bed (500) is comprised of alumina silicate fibre blanket layer (501) and the first aeroge insulation blanket layer (502); Alumina silicate fibre blanket layer (501) and the first aeroge insulation blanket layer (502) are laid on the lateral surface at position that all that cover ceramic roller kiln kiln body arrange heat-insulation layer (300) successively according to order from inside to outside, fixture (701) is arranged on outside the first aeroge insulation blanket layer (502), makes that heat insulation composite bed (500) is compacted, compacting is on the lateral surface of the heat-insulation layer (300) of ceramic roller kiln; Described heat-insulation layer (300) is the silica heat-insulating material layer on the outer wall that is arranged on ceramic roller kiln kiln body;
Support bar (702) is fixed on outside the first aeroge insulation blanket layer (502), and support bar (702) is the airsetting adhesive tape that 1 layer or 2 layers of width stacking are 1～3cm, on the first aeroge insulation blanket layer (502), every 0.5～1.0 meter, arranges one abreast; Described airsetting adhesive tape is by aeroge insulation blanket cutting slivering;
Iron sheet (703) is fixed on the outside of support bar (702), and iron sheet (703) is parallel with the first gel insulation blanket layer (502), between iron sheet (703) and the first aeroge insulation blanket layer (502), forms air layer (800);
Described pipe insulation part comprises 1～3 group of insulating composite layer (600), fixture, support bar (702) and iron sheet (703); The pipe insulation part is arranged on the outer surface of fume pipe (401) and warm-air pipe (402), fume pipe (401) is connected with the smoke exhaust fan (101) of roller kilns work system, and warm-air pipe (402) is connected with the air-heater (105) of taking out of roller kilns work system;
Insulating composite layer (600) is comprised of the gentle gel insulation blanket of glass fibre carpet veneer layer; Wrapped on the outer surface of fume pipe (401) and warm-air pipe (402) by group successively according to order insulating composite layer (600) from the inside to the outside, and tie up by group and be fixed on pipeline by fixture;
The 2 layer airsetting adhesive tape of support bar (702) for being about 1～3 centimetre 1 layer or stacking around the width on the outermost layer aeroge insulation blanket that is fixed on insulating composite layer (600), support bar (702) is upper every 0.6～1.0 meter setting at fume pipe (401) and warm-air pipe (402);
Iron sheet (703) is wrapped in support bar (702) outside, formation toroidal cavity as air layer (800) between iron sheet (703) and outermost layer aeroge insulation blanket.
2. the attemperator of ceramic roller kiln according to claim 1, it is characterized in that: the thickness of described airsetting adhesive tape is 0.6cm～1.5cm.
3. the attemperator of ceramic roller kiln according to claim 1, it is characterized in that: the insulation of furnace wall part also comprises insulating composite layer (600); Insulating composite layer (600) is arranged between heat insulation composite bed (500) and fixture (701), and fixture (701) makes insulating composite layer (600) and heat insulation composite bed (500) is compacted according to the order of ecto-entad, compacting is on the heat-insulation layer (300) of roller kiln body; Described insulating composite layer (600) is comprised of the gentle gel insulation blanket of glass fibre carpet veneer layer, and aeroge insulation blanket layer is laid on the lateral surface of glass fibre carpet veneer.
4. the attemperator of ceramic roller kiln according to claim 3, it is characterized in that: the insulating composite layer of insulation of furnace wall part (600) comprises single insulating composite layer (600a), two insulating composite layer (600b) and triple insulating composite layer; Single insulating composite layer (600a) is set gradually and forms according to from inside to outside order by the first glass fibre carpet veneer (601) and the second aeroge insulation blanket layer (602); Two insulating composite layers (600b) are set gradually and form according to from inside to outside order by the first glass fibre carpet veneer (601), the second aeroge insulation blanket layer (602), the second glass fibre carpet veneer (603) and the 3rd aeroge insulation blanket layer (604); Triple insulating composite layers also comprise the one group of gentle gel insulation blanket of glass fibre carpet veneer layer outside the 3rd aeroge insulation blanket layer (604).
5. the attemperator of ceramic roller kiln according to claim 4 is characterized in that: described heat-insulation layer (300) comprises that temperature that the appearance temperature is the middle warm area heat-insulation layer of 70 ℃～90 ℃ and appearance greater than high-temperature region heat-insulation layer, the appearance temperature of 90 ℃ is the low-temperature space heat-insulation layer of 50 ℃～70 ℃; The heat preservation member that is positioned at heat-insulation layer place, high-temperature region of insulation of furnace wall part is the high-temperature region heat preservation member, and the heat preservation member that is arranged in warm area heat-insulation layer place is the warm area heat preservation member, and the heat preservation member that is positioned at low-temperature space heat-insulation layer place is the low-temperature space heat preservation member; When the appearance temperature of described heat-insulation layer referred to the roller kilns operation, its heat-insulation layer (300) was exposed to the temperature of airborne appearance.
6. the attemperator of ceramic roller kiln according to claim 5, it is characterized in that: the aeroge insulation blanket of the first aeroge insulation blanket layer (502) of the heat insulation composite bed (500) of kiln height warm area heat preservation member is high temperature modification aeroge insulation blanket; Insulating composite layer (600) is two insulating composite layers (600b) or triple composite heat-insulating layer, the aeroge insulation blanket of the aeroge insulation blanket layer of the inboard of two insulating composite layers (600b) or triple composite heat-insulating layers is high temperature modification aeroge insulation blanket, and the aeroge insulation blanket of outermost aeroge insulation blanket layer is middle warm type aeroge insulation blanket.
7. the attemperator of ceramic roller kiln according to claim 5, it is characterized in that: in the kiln body, the aeroge insulation blanket of the first aeroge insulation blanket layer (502) of the heat insulation composite bed (500) of warm area heat preservation member is high temperature modification aeroge insulation blanket; Insulating composite layer (600) is single insulating composite layer (600a), and the aeroge insulation blanket of the second aeroge insulation blanket layer (602) of single insulating composite layer (600a) is middle warm type aeroge insulation blanket.
One of according to claim 1 to 7 described ceramic roller kiln attemperator, it is characterized in that: also comprise the roller gap heat preservation member, described roller gap heat preservation member is made with hard aerogel heat-insulating material, the shape in the gap of the shape of roller gap heat preservation member and roller and roller matches, and is tight with the roller laminating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202629108U CN203298600U (en) | 2013-05-14 | 2013-05-14 | Heat preservation device of ceramic roller kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202629108U CN203298600U (en) | 2013-05-14 | 2013-05-14 | Heat preservation device of ceramic roller kiln |
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| CN203298600U true CN203298600U (en) | 2013-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245191A (en) * | 2013-05-14 | 2013-08-14 | 常州循天节能科技有限公司 | Attemperator for ceramic roller kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245191A (en) * | 2013-05-14 | 2013-08-14 | 常州循天节能科技有限公司 | Attemperator for ceramic roller kiln |
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