CN106766908A - A kind of heat accumulating type roasting plant - Google Patents
A kind of heat accumulating type roasting plant Download PDFInfo
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- CN106766908A CN106766908A CN201611009409.5A CN201611009409A CN106766908A CN 106766908 A CN106766908 A CN 106766908A CN 201611009409 A CN201611009409 A CN 201611009409A CN 106766908 A CN106766908 A CN 106766908A
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- Prior art keywords
- heat
- burner hearth
- roasting plant
- temperature
- accumulating type
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
- F27D1/06—Composite bricks or blocks, e.g. panels, modules
- F27D1/063—Individual composite bricks or blocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/007—Systems for reclaiming waste heat including regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
- F27D2019/0018—Monitoring the temperature of the atmosphere of the kiln
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The present invention provides a kind of heat accumulating type roasting plant, belongs to roasting plant technical field.Including heat-preserving boiler, heat-exchange device and baking box；Heat-preserving boiler includes burner hearth, and burner hearth is provided with chimney and fire grate, and burner hearth includes external protection, heat-insulation layer and fire brick layer, there is gitter brick inside it；The heat-preserving boiler also includes the temperature monitoring system for detecting temperature in burner hearth；Heat-exchange device includes conduction oil coil pipe, radiator, deep fat efferent duct, cold oil return duct and oil circulating pump；Gitter brick is mixed by following raw material：High-al clay 25 30%, alumina silicate 20 25%, basic zirconium phosphate 15 20%, highly-purity magnesite 6 10%, aluminium nitride 8 11%, titanium dioxide 2 3%, Ludox 6 10%, water 4 6%., by using the heat-storing material that accumulation of heat effect is good, resistance to heat shocks can be good, with simple structure, the thermal efficiency is high, heat supply even for the roasting plant, using durable, the advantages of controllability is strong.
Description
【Technical field】
The present invention relates to roasting plant technical field, and in particular to a kind of heat accumulating type roasting plant.
【Background technology】
In roasting plant field, existing roasting plant species is divided into log or burning according to the difference of supplying heat source on the market
Coal-boasted box, electrical heating oven, steam drying baking box, solar energy baking box etc., solar energy baking box, electrical heating oven and steam drying are baked
Although case is more advanced and intellectuality, using more convenient, because its disposable input is big, operating cost is high, so log is roasting
Case also takes up the larger market space.Coal-fired and firewood-fired baking box is the generation heat that burnt in the boiler by fuel, is situated between through heat transfer
Matter is transferred heat into baking box, reaches the purpose of baking material.With becoming increasingly conspicuous for energy shortage and environmental problem, energy-conservation
With the attention that environmental protection also increasingly causes people.Roasting plant is a kind of energy conversion, is directed to conversion, the storage of energy
Deposit and transportation, the use of the power-saving technology of each link has great importance to energy-conservation and environmental protection.
The efficiency of utilization of log or coal-fired stove is improved, heat-storing material can be in the boiler used.Traditional Firewood burning stove
Furnace temperature be 600~800 DEG C, it is possible to use cost does heat-storing material than less expensive clay brick, although clay brick low cost,
Less robust, easily ftractures, and service life is shorter, and heat insulating ability is also poor, and since 1993, country expressly provided taboo
Only produce clay solid brick, limitation production structural clay tile.So, heat-storing material used by the boiler to roasting plant heat supply is entered
Row is improved, so as to improve efficiency of utilization, reduces fume emission, is also an effective means for alleviating energy shortage problem.
【The content of the invention】
Goal of the invention of the invention is：For above-mentioned problem, there is provided a kind of heat accumulating type roasting plant, the equipment
By using the heat-storing material that accumulation of heat effect is good, resistance to heat shocks energy is good, with simple structure, the thermal efficiency is high, heat supply even,
Using durable, the advantages of controllability is strong.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of heat accumulating type roasting plant, including heat-preserving boiler, heat-exchange device and baking box；The heat-preserving boiler includes burner hearth
With located at the top of burner hearth and with the chimney that connects of burner hearth inside；Bottom in burner hearth is provided with fire grate, and the burner hearth is from outside to inside
Including external protection, heat-insulation layer and fire brick layer, gitter brick is additionally provided with burner hearth；The heat-preserving boiler is also supervised including temperature
Control system, the temperature monitoring system includes the temperature controller being arranged on the external protection, alarm and is arranged on
Burner hearth inside is used to detect the temperature sensor of temperature in burner hearth, the temperature sensor, alarm and temperature controller difference
Connection；The heat-exchange device includes the conduction oil coil pipe being located in burner hearth, the radiator being located in baking box, is connected to conduction oil
Deep fat efferent duct between coil outlets and radiator inlet, be connected to it is cold between conduction oil coil pipe entrance and radiator outlet
Oil return pipe and oil circulating pump；Blower fan just is provided with to the radiator in the baking box；
Wherein, the gitter brick by following raw materials by weight it is blended, shaping, dry, sintering form：High-al clay
25-30%, alumina silicate 20-25%, basic zirconium phosphate 15-20%, highly-purity magnesite 6-10%, aluminium nitride 8-11%, titanium dioxide 2-
3%, Ludox 6-10%, water 4-6%.
Preferably, the granularity of the high-al clay is 0.1-1mm, and the content of alundum (Al2O3) is more than 65% in high-al clay；
The granularity of the highly-purity magnesite is 0.1-1mm, and the content of MgO is 96-98%, and remaining is impurity.
Preferably, the gitter brick is made by the following method：Raw material is got out according to percentage by weight；By high-al clay,
Alumina silicate, basic zirconium phosphate, aluminium nitride, titanium dioxide are mixed into premix；Water, Ludox and highly-purity magnesite is well mixed right
After be added in premix, after stirring pressure for 1.5-1.8Mpa pressure under it is compressing, in 120-150 DEG C of drying
After 20-24 hours, it is put into high temperature kiln, in 1200-1300 DEG C of sintering, sintering time is 2-3 hours.
Preferably, gitter brick rectangular array arrangement in burner hearth, and pile up in conduction oil coil pipe surrounding.The accumulation of heat
Brick has heat storage capacity high, and resistance to heat shocks is good, and cost of material is low and the characteristics of service life more long.Gitter brick is by heat conduction when using
Oil is surrounded, and gitter brick can not only absorb a large amount of heat energy of burning release, when the high-temperature flue gas that burning is produced pass through gitter brick,
Heat, pernicious gas, the dust entrained by high-temperature flue gas can also be absorbed, smog discharge temperature is not only reduced, heat absorption is improved
Efficiency, reduces the discharge of pollutant.The heat exchange form of the roasting plant is mainly by gitter brick absorption heat, and gitter brick is again
By heat exchange to conduction oil coil pipe, the effect by circulating pump is defeated to heating equipment by heat ----baking box, because burning is produced
Raw heat is not to directly act on conduction oil coil pipe, therefore the stove fire in combustion furnace will not directly affect the oil in heat-conducting oil pipes
Temperature, and gitter brick heat release and heat transfer are steady, it is ensured that oil temperature will not produce substantially fluctuation with stove fire situation in heat-conducting oil pipes, and
In the case of truce, gitter brick can also continue to discharge a part of heat, it is not necessary to which personnel's moment controls stove fire and furnace temperature.This
Outward, the heat-conducting oil pipes in the present invention in burner hearth use tray style design, can increase the area being heated.
More preferably, the burner hearth is provided with observation, is easy to observe the combustion case in boiler.
More preferably, the fire grate lower section is provided with cinder storage tank, for collecting fuel residues.
More preferably, the external protection is made for stainless steel, has the advantages that solid, durable.
More preferably, the fire brick layer uses zirconia refractory and is made.
In sum, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, the present invention is improved in the heat-preserving boiler for baking box heat supply, and gitter brick is set in the burner hearth of boiler, can not only
The efficiency of heat absorption is enough improved, gitter brick also carries out heat exchange with high-temperature flue gas and adsorbs ash, the powder carried in flue gas
Dirt, the discharge temperature for reducing flue gas and the discharge for reducing pollutant, play the effect of energy-saving and emission-reduction.In addition, being set in heat-preserving boiler
Gitter brick is put, the temperature of heat-conducting oil pipes can be made relatively steady, and fuel stops also ensureing heat within a certain period of time after burning
Supply, make equipment safety reliability.The present invention also sets temperature controller, alarm and temperature sensor to heat-preserving boiler,
When the temperature of gitter brick rises to the higher limit of setting, and temperature drop to lower limit when, temperature controller touch alarm
Send alarm sound, with facilitate ceased fire or flame enrichment operation；It is on duty by boiler always without personnel, moreover it is possible to save people
Work.
2nd, the gitter brick set in holding furnace of the present invention be using high-al clay, alumina silicate, basic zirconium phosphate, highly-purity magnesite,
The raw materials such as aluminium nitride, Ludox, titanium dioxide are mixed by certain proportioning, and wherein high-al clay is metallurgical industry and other works
The widely used refractory material of industry, more than 1700 DEG C, its main component is aluminum oxide to refractory temperature, is aoxidized in premium high-alumina soil
Generally more than 60%, the characteristics of the aluminum oxide contained in high-al clay has high specific heat capacity, therefore heat storage capacity is good for the content of aluminium.
Alumina silicate with low heat conductivity, excellent heat endurance and chemical stability；Basic zirconium phosphate is resistant to stronger sour and certain alkali
Degree, stability and mechanical strength are very strong, and chemical stability is higher, and thermal coefficient of expansion is small；Highly-purity magnesite is from natural superfine water chestnut
Magnesium ore purification by floatation is formed through light-burned, fine grinding, pressure ball, superhigh temperature oil shaft furnace calcining, is brickmaking, is made the high-quality of refractory material
Raw material.Aluminium nitride belongs to DLC nitride, and highest can be stabilized to 2200 DEG C, and room temperature strength is high, and intensity is with the rising of temperature
Decline slower；Thermal conductivity is good, and thermal coefficient of expansion is small, is good heat shock resistance material, with using it is durable the characteristics of.Titanium dioxide
Titanium, as sintering aidses, can reduce the temperature sintered when gitter brick is sintered in system；Ludox conduct in gitter brick
With binding agent, with acidproof and resistant to elevated temperatures feature.Above-mentioned major ingredient be combined with each other make gitter brick heat storage capacity is good, resistance to thermal shock
Property is good, using it is durable the characteristics of, while the silica and titanium dioxide one in magnesia, Ludox in highly-purity magnesite are acted as
With, make gitter brick system sintering when system in uniform small grains, the intensity of gitter brick is greatly improved, and further carries
High thermal stability.Therefore, using gitter brick of the invention, make holding furnace thermal loss of the invention few, energy-saving effect more preferably, by
It is good in gitter brick resistance to heat shocks, also have the advantages that using durable.
【Brief description of the drawings】
Fig. 1 is a kind of functional schematic of heat accumulating type roasting plant of the invention.
Wherein, 1- heat-preserving boilers, 11- burner hearths, 11a- external protections, 11b heat-insulation layers, 11c- fire brick layers, 12- chimneys,
13- gitter bricks, 14- fire grates, 15- cinder storage tanks, 16- charge doors, 17- skimming gates, 18- observation windows, 19- temperature monitoring systems,
19a- alarms, 19b- temperature controllers, 19c- temperature sensors；2- heat-exchange devices, 21- conduction oil coil pipes, 22- recycle oils
Pump, 23- radiators, 24- expansion slots；3- baking boxs；4- blower fans.
【Specific embodiment】
In order to more clearly express the present invention, the present invention is made furtherly below in conjunction with the drawings and specific embodiments
It is bright.
As shown in figure 1, a kind of heat accumulating type roasting plant, mainly by heat-preserving boiler 1, baking box 3 and by boiler 1 and baking box 3
The three parts of heat-exchange device 2 composition that system gets up；The heat-preserving boiler 1 includes burner hearth 11, is provided with and stove at the top of burner hearth 11
The chimney 12 of the inside of thorax 11 connection；Observation window 18 is provided with the side wall of burner hearth 11, is easy to observe the situation in burner hearth 11；In burner hearth
Bottom in 11 is provided with fire grate 14, and the lower section of fire grate 14 is preferably provided with cinder storage tank 15, the residue for storing burning, near stove
Fuel charge door 16 and skimming gate 17 are offered on the hearth wall of row 14, is easy to add the cleaning of fuel and residue.The burner hearth 11
Overall to include external protection 11a, heat-insulation layer 11b and fire brick layer 11c from outside to inside, wherein external protection 11a is not preferably using
Rust Steel material make, with it is sturdy and durable the characteristics of；Heat-insulation layer 11b is made by insulation material, plays heat-insulation and heat-preservation
Effect, insulation material used can be the mixing of alumina silicate, rock wool, glass fibre, aluminium chlorate cellucotton or these materials
Thing.Fire brick layer 11c preferably uses zirconia refractory and is made.See Fig. 1, the heat-exchange device 2 includes being located at burner hearth 11
Interior conduction oil coil pipe 21, the radiator 23 being located in baking box 3, be connected to the outlet of conduction oil coil pipe 21 and the entrance of radiator 23 it
Between deep fat efferent duct, be connected to the entrance of conduction oil coil pipe 21 and radiator 23 export between cold oil return duct and recycle oil
Pump 22.In order to accelerate the radiating of radiator 23, the position just to radiator in baking box 3 is provided with blower fan 4.Preferably, radiating
Device 23 is obtained by deep fat efferent duct or cold oil return duct brake forming；It is swollen as being additionally provided with preferred deep fat efferent duct
Swollen groove 24, conduction oil is susceptible to volumetric expansion in the case where being heated, and causes overpressure to increase, and influences the safety of operation,
Increasing expansion slot 24 can play compensator or trimmer pressure.
Because gitter brick 13 surrounds conduction oil coil pipe 21, when having fuel combustion in boiler, gitter brick 13 not only can be with
A large amount of heat energy of burning release are absorbed, when the high-temperature flue gas that burning is produced pass through gitter brick 13, moreover it is possible to absorb high-temperature flue gas institute
The heat of carrying, pernicious gas, dust, not only reduce smog discharge temperature, improve the efficiency of heat absorption, reduce the row of pollutant
Put.The heat exchange form of the roasting plant is mainly by the absorption heat of gitter brick 13, and gitter brick 13 is again led heat exchange
Deep fat coil pipe 21, the effect by oil circulating pump 22 is defeated to heating equipment by heat ----baking box 3, by blower fan 4 and radiator
23 materials that heat exchange is toasted to needs.Because the heat that burning is produced is not to directly act on conduction oil coil pipe 21, therefore
Stove fire in combustion furnace will not directly affect the oil temperature in conduction oil coil pipe 21, and the heat release of gitter brick 13 and heat transfer are steady, it is ensured that
Oil temperature will not produce substantially fluctuation with stove fire situation in conduction oil coil pipe 21, and in the case of truce, gitter brick 13 is also
Can continue to discharge a part of heat, it is not necessary to which personnel's moment controls stove fire and furnace temperature.
As shown in figure 1, the heat-preserving boiler 1 is additionally provided with temperature monitoring system 19, it is installed near observation window 8.The temperature is supervised
Control system 19 includes temperature controller 19c, alarm 19a and is arranged on the inside of burner hearth 11 for detecting the temperature of temperature in burner hearth
Degree sensor 19b, temperature sensor 19b, alarm 19a are connected respectively with temperature controller 19c；Temperature sensor 19b and report
Alert device 19a is preferably provided on external protection 11a at observation window 18.By setting temperature monitoring system 19, work as gitter brick
When 13 temperature rises to the higher limit of setting, and temperature drop to lower limit when, temperature controller 19c touches alarm 19a
Send alarm sound, with facilitate operating personnel to be ceased fire or flame enrichment operation；It is on duty by boiler always without personnel, can save
It is about artificial.
Gitter brick is further described below by way of specific embodiment.
Embodiment 1
A kind of gitter brick in heat-preserving boiler, is mixed by weight ratio by following raw material：High-al clay 25kg,
Alumina silicate 25kg, basic zirconium phosphate 20kg, highly-purity magnesite 10kg, aluminium nitride 8kg, titanium dioxide 2kg, Ludox 6kg, water 4kg.Its
In, it is desirable to the granularity of high-al clay is 0.1-1mm, and the content of alundum (Al2O3) is more than 65% in high-al clay；It is required that highly-purity magnesite
Granularity be 0.1-1mm, the content of MgO is 96%, and remaining is impurity.
Above-mentioned gitter brick is made by the following method：Raw material is got out according to weight proportion；By high-al clay, alumina silicate, phosphorus
Sour zirconium, aluminium nitride, titanium dioxide are mixed into premix；Water, Ludox and highly-purity magnesite are well mixed and are then added to
It is compressing in the case where pressure is for the pressure of 1.5Mpa after stirring in premix, after 120 DEG C of dryings 24 hours, it is put into height
In warm kiln, in 1200-1300 DEG C of sintering, sintering time is 2 hours.
Embodiment 2
A kind of gitter brick in heat-preserving boiler, is mixed by weight ratio by following raw material：High-al clay 30kg,
Alumina silicate 20kg, basic zirconium phosphate 15kg, highly-purity magnesite 6kg, aluminium nitride 9kg, titanium dioxide 3kg, Ludox 10kg, water 6kg.Its
In, it is desirable to the granularity of high-al clay is 0.1-1mm, and the content of alundum (Al2O3) is more than 65% in high-al clay；It is required that highly-purity magnesite
Granularity be 0.1-1mm, the content of MgO is 98%, and remaining is impurity.
Above-mentioned gitter brick is made by the following method：Raw material is got out according to weight proportion；By high-al clay, alumina silicate, phosphorus
Sour zirconium, aluminium nitride, titanium dioxide are mixed into premix；Water, Ludox and highly-purity magnesite are well mixed and are then added to
It is compressing in the case where pressure is for the pressure of 1.8Mpa after stirring in premix, after 150 DEG C of dryings 20 hours, it is put into height
In warm kiln, in 1200-1300 DEG C of sintering, sintering time is 3 hours.
Embodiment 3
A kind of gitter brick in heat-preserving boiler, is mixed by weight ratio by following raw material：High-al clay 28kg,
Alumina silicate 22kg, basic zirconium phosphate 16kg, highly-purity magnesite 8kg, aluminium nitride 11kg, titanium dioxide 3kg, Ludox 7kg, water 5kg.Its
In, it is desirable to the granularity of high-al clay is 0.1-1mm, and the content of alundum (Al2O3) is more than 65% in high-al clay；It is required that highly-purity magnesite
Granularity be 0.1-1mm, the content of MgO is 97%, and remaining is impurity.
Above-mentioned gitter brick is made by the following method：Raw material is got out according to weight proportion；By high-al clay, alumina silicate, phosphorus
Sour zirconium, aluminium nitride, titanium dioxide are mixed into premix；Water, Ludox and highly-purity magnesite are well mixed and are then added to
It is compressing in the case where pressure is for the pressure of 1.6Mpa after stirring in premix, after 130 DEG C of dryings 22 hours, it is put into height
In warm kiln, in 1200-1300 DEG C of sintering, sintering time is 2.5 hours.
Comparative example 1
A kind of gitter brick, is mixed by weight ratio by following raw material：High-al clay 28kg, alumina silicate 22kg, phosphoric acid
Zirconium 16kg, highly-purity magnesite 8kg, aluminium nitride 11kg, water 5kg.Wherein, it is desirable to which the granularity of high-al clay is 0.1-1mm, three in high-al clay
The content of Al 2 O is more than 65%；It is required that the granularity of highly-purity magnesite is 0.1-1mm, the content of MgO is 97%, and remaining is miscellaneous
Matter.
Preparation method is：Raw material is got out according to weight proportion；High-al clay, alumina silicate, basic zirconium phosphate, aluminium nitride are mixed equal
It is even into premix；It is then added to water and highly-purity magnesite are well mixed in premix, in pressure is 1.6Mpa after stirring
Pressure under it is compressing, after 130 DEG C of dryings 22 hours, be put into high temperature kiln, in 1200-1300 DEG C of sintering, sintering time
It is 2.5 hours.
Comparative example 2
A kind of gitter brick in heat-preserving boiler, is mixed by weight ratio by following raw material：High-al clay 33kg,
Basic zirconium phosphate 24kg, highly-purity magnesite 15kg, aluminium nitride 14kg, titanium dioxide 3kg, Ludox 7kg, water 5kg.Wherein, it is desirable to high alumina
The granularity of soil is 0.1-1mm, and the content of alundum (Al2O3) is more than 65% in high-al clay；It is required that the granularity of highly-purity magnesite is 0.1-
The content of 1mm, MgO is 97%, and remaining is impurity.
Preparation method is：Raw material is got out according to weight proportion；High-al clay, basic zirconium phosphate, aluminium nitride, titanium dioxide are mixed
Uniformly into premix；Water, Ludox and highly-purity magnesite are well mixed and are then added in premix, in pressure after stirring
For compressing under the pressure of 1.6Mpa, after 130 DEG C of dryings 22 hours, it is put into high temperature kiln, is sintered in 1200-1300 DEG C,
Sintering time is 2.5 hours.
The gitter brick of present invention production is good due to heat storage capacity, moreover it is possible to continue to supply in a period of time after boiler stops burning
Satisfactory heat energy so that heat insulation effect is very good.In order to verify that heat-preserving boiler of the invention is using storage of the invention
Heat insulation effect after hot brick, it is contrasted from the effect produced by different heat storages, by equal amount, different formulations
Gitter brick by several times be put into same burner hearth, stop after the temperature inside burner hearth reaches 600 DEG C burn, record burner hearth inside temperature with
The change of time, grouping experiment situation is as follows, and test result is shown in Table 1.
Experimental group 1-3：The gitter brick in embodiment of the present invention 1-3 is used respectively；
Contrast groups 1：Relative to embodiment 3, titanium dioxide and Ludox are not added with；
Contrast groups 2：Relative to embodiment 3, alumina silicate is not added with, its weight portion is replaced respectively with other raw materials；
Contrast groups 3：Tested using common brick；
Temperature inside the burner hearth of table 1 stops to burn after reaching 600 DEG C, and internal temperature changes over time situation
As can be seen from the above table, using the boiler internal temperature of unselected clay gitter brick after stopping burning 80 minutes, at a temperature of
152 DEG C are dropped to, the demand of heat supply can not be met completely, and gitter brick of the invention is after stopping burning 80 minutes, moreover it is possible to keep higher
Temperature, can persistently give heating equipment heat supply, heat-accumulating and-keeping effect is significantly improved compared to clay gitter brick.Though contrast groups 1
Titanium dioxide and Ludox are so not added with, but heat insulation effect is simultaneously little with difference of the present invention, it is seen that play accumulation of heat effect not
It is both raw materials.Contrast groups 2 are relatively fast due to alumina silicate, the temperature drop in its burner hearth is not used, it is seen that alumina silicate
Addition can play synergy with other components, so as to improve the heat storing and heat preserving ability of gitter brick of the present invention.
Gitter brick of the invention due to compatibility rationally, high yield rate, yield rate up to more than 99%, and with preferable machinery
Intensity, anti-fatigue ability and thermal shock resistance, long service life store through obtained in specific testing example 1-3, contrast groups 1-3
The related process parameters of hot brick such as table 2 below：
The related process parameters of the gitter brick of table 2
Gitter brick of the invention is can be seen that from the data of table 2 compared with the data that common brick is tested, specific heat capacity
Improve a lot, therefore heat storage capacity is greatly enhanced；Bulk density is big, while the porosity is few, in the situation of identical heat-retaining capacity
Under, the quantity of required gitter brick is reduced.The present invention also has mechanical strength and good anti-thermal shock higher compared to contrast groups 1
Property, it is ensured that finished product has permanent service life in the heating repeatedly and heat release circulation of room temperature -800.
Described above is directed to the detailed description of preferably possible embodiments of the invention, but embodiment is not limited to this hair
Bright patent claim, the equal change completed under the technical spirit suggested by all present invention or modification change, all should belong to
Cover the scope of the claims in the present invention.
Claims (8)
1. a kind of heat accumulating type roasting plant, including heat-preserving boiler, heat-exchange device and baking box；The heat-preserving boiler include burner hearth and
Located at the top of burner hearth and with the chimney that connects of burner hearth inside；Bottom in burner hearth is provided with fire grate, it is characterised in that：The burner hearth
Include external protection, heat-insulation layer and fire brick layer from outside to inside, gitter brick is additionally provided with burner hearth；The heat-preserving boiler also includes
Temperature monitoring system, the temperature monitoring system include being arranged on temperature controller on the external protection, alarm and
Burner hearth inside is arranged on for detecting the temperature sensor of temperature in burner hearth, the temperature sensor, alarm and temperature control
Device is connected respectively；The heat-exchange device includes the conduction oil coil pipe being located in burner hearth, the radiator being located in baking box, is connected to
Conduction oil coil pipe is exported and the deep fat efferent duct between radiator inlet, be connected to conduction oil coil pipe entrance and radiator outlet it
Between cold oil return duct and oil circulating pump；Blower fan just is provided with to the radiator in the baking box；
Wherein, the gitter brick by following raw materials by weight it is blended, shaping, dry, sintering form：High-al clay 25-
30%, alumina silicate 20-25%, basic zirconium phosphate 15-20%, highly-purity magnesite 6-10%, aluminium nitride 8-11%, titanium dioxide 2-3%, silicon
Colloidal sol 6-10%, water 4-6%.
2. heat accumulating type roasting plant according to claim 1, it is characterised in that：The granularity of the high-al clay is 0.1-1mm,
The content of alundum (Al2O3) is more than 65% in high-al clay；The granularity of the highly-purity magnesite is 0.1-1mm, and the content of MgO is 96-
98%, remaining is impurity.
3. heat accumulating type roasting plant according to claim 2, it is characterised in that：The gitter brick is made by the following method
Into：Raw material is got out according to percentage by weight；High-al clay, alumina silicate, basic zirconium phosphate, aluminium nitride, titanium dioxide are mixed into
Premix；It is then added to water, Ludox and highly-purity magnesite are well mixed in premix, in pressure is 1.5- after stirring
It is compressing under the pressure of 1.8Mpa, after drying 20-24 hours at 120-150 DEG C, it is put into high temperature kiln, in 1200-1300 DEG C
Sintering, sintering time is 2-3 hours.
4. heat accumulating type roasting plant according to claim 3, it is characterised in that：The gitter brick rectangular battle array in burner hearth
Row arrangement, and pile up in conduction oil coil pipe surrounding.
5. heat accumulating type roasting plant according to claim 3, it is characterised in that：The burner hearth is provided with observation window.
6. heat accumulating type roasting plant according to claim 3, it is characterised in that：The fire grate lower section is provided with cinder storage tank.
7. heat accumulating type roasting plant according to claim 3, it is characterised in that：The external protection is for stainless steel makes
Into.
8. heat accumulating type roasting plant according to claim 3, it is characterised in that：It is resistance to that the fire brick layer uses zirconium matter
Fiery material is made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611009409.5A CN106766908A (en) | 2016-11-16 | 2016-11-16 | A kind of heat accumulating type roasting plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611009409.5A CN106766908A (en) | 2016-11-16 | 2016-11-16 | A kind of heat accumulating type roasting plant |
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| CN106766908A true CN106766908A (en) | 2017-05-31 |
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| CN201611009409.5A Pending CN106766908A (en) | 2016-11-16 | 2016-11-16 | A kind of heat accumulating type roasting plant |
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| DE102010008059A1 (en) * | 2010-02-16 | 2011-08-18 | Albrecht 65618 Kretzschmar | High temperature heat accumulator system for e.g. propulsion of automobile, has transducer unit converting heat energy into different forms of energy or amounts of power based on application, where system is supplemented to control target |
| CN103420668A (en) * | 2012-05-21 | 2013-12-04 | 天津德仕能科技有限公司 | Heat-storing magnesia brick |
| CN103964864A (en) * | 2014-04-16 | 2014-08-06 | 李萃坤 | Heat storage brick and manufacturing method thereof |
| CN103968651A (en) * | 2014-04-16 | 2014-08-06 | 李萃坤 | Energy-saving baking device |
| CN203837426U (en) * | 2014-04-16 | 2014-09-17 | 李萃坤 | Energy-saving baking device |
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- 2016-11-16 CN CN201611009409.5A patent/CN106766908A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000097498A (en) * | 1998-09-25 | 2000-04-04 | Hokuriku Electric Power Co Inc:The | High temperature heat storage tank |
| CN201129933Y (en) * | 2007-11-14 | 2008-10-08 | 贵阳铝镁设计研究院 | Residual heat conducting oil circulation apparatus |
| DE102010008059A1 (en) * | 2010-02-16 | 2011-08-18 | Albrecht 65618 Kretzschmar | High temperature heat accumulator system for e.g. propulsion of automobile, has transducer unit converting heat energy into different forms of energy or amounts of power based on application, where system is supplemented to control target |
| CN103420668A (en) * | 2012-05-21 | 2013-12-04 | 天津德仕能科技有限公司 | Heat-storing magnesia brick |
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| CN103968651A (en) * | 2014-04-16 | 2014-08-06 | 李萃坤 | Energy-saving baking device |
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Application publication date: 20170531 |