CN203999383U - Low-temperature decomposition and high temperature sintering all-in-one oven - Google Patents
Low-temperature decomposition and high temperature sintering all-in-one oven Download PDFInfo
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- CN203999383U CN203999383U CN201420479482.9U CN201420479482U CN203999383U CN 203999383 U CN203999383 U CN 203999383U CN 201420479482 U CN201420479482 U CN 201420479482U CN 203999383 U CN203999383 U CN 203999383U
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Abstract
The utility model relates to low-temperature decomposition and high temperature sintering all-in-one oven, contain, lower two portions body of heater, top is low-temperature decomposition stove, bottom is high temperature sintering furnace, the two is communicated with by tremie pipe, the top of low-temperature decomposition stove is provided with opening for feed, top is provided with fresh air inlet and waste gas outlet, middle part is provided with one group of circumferential uniform low temperature burner along furnace shell, low temperature burner and the first fuel, combustion air source is communicated with, the middle part of high temperature sintering furnace is provided with one group of circumferential uniform high temperature burner along furnace shell, bottom is provided with discharge opening, high temperature burner and the second fuel, combustion air source is communicated with, the annular chamber towards outer lug is extended in the bottom of low-temperature decomposition stove, uniform one group of furnace gas import on the bottom surface of annular chamber, furnace gas import is communicated with the top of high temperature sintering furnace by being communicated with furnace gas pipe.The utility model has the advantages that and saved cost of investment, reduced energy consumption, the burnt dolomite compactness extent of generation is higher, can meet the requirement to sintered balls material volume density in refractory materials production process.
Description
Technical field
The utility model relates to a kind of pyrolytic decomposition kiln, and especially a kind of low-temperature decomposition and high temperature sintering all-in-one oven, belong to calciner technical field.
Background technology
According to the applicant understood, the burnt dolomite calcined dolomite of weighing again, is a kind of good MgO-CaO matter refractory raw material, owing to often containing SiO in rhombspar
2, Fe
2o
3, Al
2o
3deng impurity, cause the compactness extent of its sintered balls material low, it burns rear volume density can not meet the requirement that refractory materials is produced.Therefore, in order to address the above problem, for the higher rhombspar of foreign matter content, secondly need to process by the following method: first rhombspar is carried out light-burnedly, light dolomite is carried out to digestion process, with remove portion impurity, again postdigestive light dolomite is dried to decomposition, then carry out pressure ball molding, finally the light-burned material after pressure ball molding is put into common high temperature vertical kiln and carry out reheating, obtain burnt dolomite.But, at above-mentioned traditional method for calcinating, in order to remove the impurity in rhombspar, thering is operational path long, pressure ball difficulty, invests the shortcomings such as large and power consumption height.
Utility model content
The purpose of this utility model is: the problem existing for above-mentioned prior art, a kind of low-temperature decomposition and high temperature sintering all-in-one oven are proposed, for low-temperature decomposition and high-temperature calcination are integrated in one, to complete the reheating process of the raw materials such as the rhombspar higher to foreign matter content, and then realize the dense sintering that digests rhombspar, make the volume density of the product obtaining can meet the requirement that refractory materials is produced.
In order to reach above object, low-temperature decomposition of the present utility model and high temperature sintering all-in-one oven, its improvements are, contain upper and lower two portions body of heater, and top is low-temperature decomposition stove, and bottom is high temperature sintering furnace, and the two is communicated with by tremie pipe; The top of described low-temperature decomposition stove is provided with towards the opening for feed in low-temperature decomposition stove, the top of described low-temperature decomposition stove is provided with fresh air inlet and waste gas outlet, middle part is provided with one group of circumferential uniform low temperature burner along furnace shell, described low temperature burner with enter interior burning of stove and be communicated with for material in stove provides the first fuel, the combustion air source of low-temperature decomposition heat energy; The middle part of described high temperature sintering furnace is provided with one group of circumferential uniform high temperature burner along furnace shell, described high temperature burner with enter burning in stove and be communicated with for material in stove provides the second fuel, the combustion air source of high temperature sintering heat energy, the bottom of described high temperature sintering furnace is provided with discharge opening; The annular chamber towards outer lug is extended along housing circumferential direction in the bottom of described low-temperature decomposition stove, uniform one group of furnace gas import on the bottom surface of described annular chamber, and described furnace gas import is communicated with the top of high temperature sintering furnace by being communicated with furnace gas pipe.
Preferably, the lower end of low-temperature decomposition stove has funnelform feed opening, and feed opening is connected with telescopic tremie pipe, and the top of high temperature sintering furnace is stretched in the bottom of tremie pipe.The length of tremie pipe is adjustable, thereby has controlled the height of materials in high temperature sintering furnace.
Preferably, material is at top low-temperature decomposition stove, bottom high temperature sintering furnace and be communicated with in the tremie pipe of upper and lower stove and form a stock column.Because this all-in-one oven is quantity-produced, make calcining materials form stock column at body of heater middle part, can be used for saving intermediate bin.
Preferably, fresh air inlet and waste gas outlet are oppositely arranged on the top of low-temperature decomposition stove, and the normal temperature fresh air entering from fresh air inlet mixes with the high-temp waste gas that is positioned at low-temperature decomposition furnace body top, in order to reduce the temperature of waste gas outlet; Waste gas outlet is communicated with return line, and the outlet of return line is towards low temperature burner, for the part waste gas of backflow is sent in low-temperature decomposition stove near the low temperature burner at body of heater middle part, decompose thermal source and ensure temperature-stable in low-temperature decomposition stove for material in stove continues to provide.
When work, to digest that light dolomite material is levigate, after pressure ball, send into low-temperature decomposition stove of the present utility model, the low-temperature decomposition of being heated in stove, the thermal source of low-temperature decomposition stove mainly contains three kinds, and a kind of is the chemical heat energy producing from the fuel combustion of low temperature burner; Another is the part waste gas refluxing from the waste gas outlet on low-temperature decomposition stove top, and this waste gas can, from sending near low temperature burner in low-temperature decomposition stove, to reduce near the temperature of high-temperature area low temperature burner, ensure temperature-stable in stove; Another kind is the waste gas that in the high temperature sintering furnace of bottom, calcining produces, this waste gas enters the annular chamber of low-temperature decomposition stove through being communicated with furnace gas pipe, and then participate in the white clouds building stones decomposition course in low-temperature decomposition stove, for the material in low-temperature decomposition furnace body provides low-temperature decomposition thermal source, and ensure that the temperature in low-temperature decomposition stove maintains in metastable scope.White clouds building stones complete after low-temperature decomposition in low-temperature decomposition stove, enter high temperature sintering furnace through tremie pipe, carry out high-temperature calcination in high temperature sintering furnace.
Preferably, waste gas outlet is connected with chimney by smoke discharging pipe, is provided with the smoke exhaust fan of wind direction towards chimney in smoke discharging pipe, and the front that is positioned at smoke exhaust fan in smoke discharging pipe is also provided with fly-ash separator.Like this, smoke exhaust fan is connected with waste gas outlet, the waste gas in body of heater not only can be discharged out of the furnace, and the high-temperature flue gas at high temperature sintering furnace top can also be drawn in the annular chamber of low-temperature decomposition stove.
Preferably, the bottom of high temperature sintering furnace is provided with cooling air import, cooling air import with provide the cooling blower of cooling air to be communicated with for material in stove, and the cooling air volume that described cooling blower provides is greater than the required air capacity of fuel combustion that high temperature burner is introduced, fully superfluous to ensure high temperature sintering furnace air.
Preferably, low temperature burner, that high temperature burner all adopts extraneous heat-eliminating medium to carry out is cooling, to ensure that burner normally moves.Low temperature burner, high temperature burner can adopt the modes such as water-cooled, air-cooled or oil cooling to carry out cooling.
Preferably, in the furnace shell of low-temperature decomposition stove and high temperature sintering furnace, built refractory materials by laying bricks or stones.
Preferably, the high-temperature flue gas at high temperature sintering furnace top enters in low-temperature decomposition stove by being communicated with furnace gas pipe, the heat that high-temperature flue gas is brought into accounts for the 30-95% of low-temperature decomposition stove institute heat requirement, and the heat that low temperature burner combustion produces accounts for the 5-70% of low-temperature decomposition stove institute heat requirement.
Preferably, material forms the windrow angle with certain angle α in annular chamber, and windrow angle is half cone-shaped, and the bottom surface radius at windrow angle is less than the vertical range between inwall and the furnace gas import of described low-temperature decomposition stove.Bottom surface radius by windrow angle is made as L, and the height that annular chamber is set is h, calculates described L value according to formula L=h/tan α, and the distance between the inwall of low-temperature decomposition stove and furnace gas import is made as l, meets l >=L, to avoid material to enter furnace gas import.
The utility model has the advantages that:
1. adopt device of the present utility model low-temperature decomposition process and the high-temperature calcination process of digestion ball material can be organically combined, and during top low-temperature decomposition stove and accessory has, lower three thermals source can ensure that temperature-stable is even in stove, concrete three thermals source be fuel combustion produce chemical heat, from waste gas outlet reflux part waste gas residual heat and bottom high temperature sintering furnace high-temperature calcination produce waste gas residual heat, the flue gas recirculation utilization of whole technological process, improve efficiency of utilization high, saved the energy;
2. the high-temp waste gas producing in the high temperature sintering furnace of bottom arrives through being communicated with furnace gas pipe in the annular chamber of low-temperature decomposition stove, thereby enter the low-temperature decomposition that participates in material in low-temperature decomposition stove, be communicated with furnace gas pipe as independent exhaust steam passage, the resistance that material can effectively avoid through tremie pipe time produces waste gas, and material forms the windrow angle of certain angle in annular chamber, can avoid material to enter and be communicated with furnace gas pipe;
3. the temperature in low-temperature decomposition stove is even, can realize digestion ball material even low-temperature decomposition under isoperibol, from the angle of sintering process, can omit the oven dry decomposition process in traditional technology process, whole investment is little, has shortened operational path, has greatly improved the efficiency of whole technique;
4. uniform some burners on the furnace shell of low-temperature decomposition stove, high temperature sintering furnace, and it is cooling that burner adopts extraneous heat-eliminating medium to carry out, to ensure burner normal working temperature, fuel burns in oversintering enters stove, meet the requirement of ball material to decomposition, calcining temperature, and burner is evenly arranged and can ensures that furnace heat is evenly distributed, and is conducive to digest decomposition, the sintering of ball material.
In a word, the utility model is integrated in one low-temperature decomposition and high temperature sintering, replace in traditional technology method and dried decomposition process, save cost of investment, reduce energy consumption, and compared with conventional high-temperature shaft furnace, the burnt dolomite compactness extent that calcining produces is higher, can meet the requirement to sintered balls material volume density in refractory materials production process.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the partial enlarged drawing of annular chamber.
Fig. 3 is the structural representation at windrow angle.
In figure: 1. high temperature sintering furnace, 2. low-temperature decomposition stove, 3. low temperature burner, 4. annular chamber, is 5. communicated with furnace gas pipe, 6. fresh air inlet, 7. waste gas outlet, 8. opening for feed, 9. tremie pipe, 10. high temperature burner, 11. cooling air imports, 12. discharge openings, 13. fly-ash separators, 14. smoke exhaust fans, 15. cooling blowers, 16. chimneys.
Embodiment
Embodiment mono-
The low-temperature decomposition of the present embodiment and high temperature sintering all-in-one oven, its structure as depicted in figs. 1 and 2, contain upper and lower two portions body of heater, the barrel dliameter of its middle and upper part body of heater is less than the barrel dliameter of bottom body of heater, top is low-temperature decomposition stove 2, bottom is high temperature sintering furnace 1, in the furnace shell of low-temperature decomposition stove 2 and high temperature sintering furnace 1, has all built refractory materials by laying bricks or stones, and low-temperature decomposition stove 2 is communicated with by tremie pipe 9 with high temperature sintering furnace 1.The top of low-temperature decomposition stove 2 is provided with towards the opening for feed 8 in low-temperature decomposition stove, rhombspar digestion ball material enters low-temperature decomposition stove 2 through opening for feed 8, and be oppositely arranged fresh air inlet 6 and waste gas outlet 7 on the top of low-temperature decomposition stove 2, the normal temperature fresh air entering from fresh air inlet 6 can mix with the high-temp waste gas of low-temperature decomposition stove 2 upper of furnace body, to reduce the temperature of waste gas, thereby reduce the temperature for the waste gas outlet 7 of combustion gas.Waste gas outlet 7 is connected with smoke exhaust fan 14 by fly-ash separator 13, smoke exhaust fan 14 is connected with chimney 16 by smoke discharging pipe, the wind direction of smoke exhaust fan 14, towards chimney 16, discharges out of the furnace the waste gas of low-temperature decomposition stove 2 interior generations successively through waste gas outlet 7, fly-ash separator 13, smoke exhaust fan 14 and chimney 16.In addition, waste gas outlet 7 is communicated with return line, and the outlet of return line is towards low temperature burner 3, a part of waste gas that waste gas outlet 7 refluxes is back near low temperature burner 3 through return line, and sent in low-temperature decomposition stove 2 by near space low temperature burner 3 and low temperature burner 3, the Main Function of this backflow waste gas is the temperature environment regulating in low-temperature decomposition stove 2, in stove when excess Temperature, by the amount that increases backflow waste gas, low-temperature decomposition stove 2 is lowered the temperature, to ensure the temperature-stable in stove, the waste gas that simultaneously refluxes can participate in preheating in stove, continue to provide decomposition thermal source for digesting ball material in stove.The middle part of low-temperature decomposition stove 2 is provided with one group of circumferential uniform low temperature burner 3 along its furnace shell, low temperature burner 3 with enter burning in stove and be communicated with for material in stove provides the first fuel, the combustion air source of low-temperature decomposition thermal source, fuel employing fuel oil or combustion gas etc., the annular chamber 4 towards outer lug is extended along its housing circumferential direction in the bottom of low-temperature decomposition stove 2, uniform one group of furnace gas import on the bottom surface of annular chamber 4, furnace gas import is communicated with the top of high temperature sintering furnace 1 by being communicated with furnace gas pipe 5, under the suction function of smoke exhaust fan 14, be transported in the annular chamber 4 of low-temperature decomposition stove 1 through being communicated with furnace gas pipe 5 from the top pumping unit high-temperature flue gas of high temperature sintering furnace 1, thereby participate in the low-temperature decomposition process of the interior rhombspar digestion of low-temperature decomposition stove 2 ball material, the heat of bringing into from the high-temperature flue gas of bottom high temperature sintering furnace 1 accounts for 90% of 1 heat requirement of low-temperature decomposition stove, and the heat that 3 burnings of low temperature burner produce accounts for 10% of 1 heat requirement of low-temperature decomposition stove.Be communicated with furnace gas pipe 5 and be designed to bend pipe, its objective is and be convenient to install, the two ends of this bend pipe adopt flange to connect, and are convenient to dismounting and change.Being communicated with furnace gas pipe 5 is that the suction force of bleeding outward by low-temperature decomposition stove 2 tops pumps up the flue gas in bottom high temperature sintering furnace 1, because flue gas is little from being communicated with the resistance that runs into of getting in furnace gas pipe 5, and intermediate blanking pipe 9 is because having material in it, the resistance running into is just larger, cause flue gas major part from being communicated with furnace gas pipe 5 upwards, the bend pipe structure that is communicated with furnace gas pipe 5 makes the path of flue gas rising elongated, the heat radiation of flue gas in bend pipe compared straight tube and increased, obviously reduce the temperature of bend pipe supplied flue gases, finally avoid the excess Temperature of low-temperature decomposition stove 2 bottoms, the decomposition effect of impact digestion ball material.
Windrow angle is the stocking angle of material self-assembling formation in the finite space, its structure as shown in Figure 3, windrow angle is half cone-shaped, its bottom surface radius is designated as to L, is highly designated as h, the angle between material and horizontal plane is labeled as to α angle, α angle is only relevant with particle size with the material of material, in the time controlling the height h at windrow angle, its radius L value also changes thereupon, therefore calculates L value according to formula L=h/tan α.In the time that digestion ball material has formed windrow angle in annular chamber 4, the bottom surface radius at this windrow angle is L, the height h at this windrow angle is the height of annular chamber 4, α value is the angle between stacking material and annular chamber 4 bottom surfaces, be communicated with furnace gas pipe 5 in order to ensure that material can not fallen into and block like this, can be by the vertical range l (seeing Fig. 3) between height h and furnace gas import and low-temperature decomposition stove stove 2 inwalls of design annular chamber 4, ensure that l >=L (being l >=h/tan α) realizes.
The bottom of low-temperature decomposition stove 2 has funnelform feed opening, and feed opening is connected with telescopic tremie pipe 9, the top of high temperature sintering furnace 1 is stretched in the bottom of tremie pipe 9, the digestion ball material that completes low-temperature decomposition can be sent in high temperature sintering furnace 1 by tremie pipe 9, to carry out high-temperature calcination in stove, make rhombspar digestion ball material at stock column of the interior formation of top low-temperature decomposition stove 2, tremie pipe 9 and bottom high temperature sintering furnace 1, it is adjustable that wherein tremie pipe 9 stretches into the length of high temperature sintering furnace 1, thereby control the height of materials in high temperature sintering furnace 1.The middle part of high temperature sintering furnace 1 is provided with one group of circumferential uniform high temperature burner 10 along its furnace shell, high temperature burner 10 with enter burning in stove and be communicated with for material in stove provides the second fuel, the combustion air source of high temperature sintering thermal source, can adopt fuel oil or combustion gas etc. as fuel.The coal gas amount of high temperature burner 10 is much more a lot of than the coal gas amount of low temperature burner 3, therefore its size is larger than low temperature burner 3, and low temperature burner 3 is low temperature pyrogenation additional heat (part heat has bottom sinter fume and furnace roof backflow waste gas to provide), can be according to the temperature conditions control high temperature burner 10 in stove and the gas quantity of low temperature burner 3.The bottom of high temperature sintering furnace 1 is provided with discharge opening 12, the top that the bottom of high temperature sintering furnace 1 is positioned at discharge opening 12 is provided with cooling air import 11, cooling air import 11 and the cooling blower 15 that cooling air is provided for material in stove, cooling blower 15 is sent into cooling air in stove from the cooling air import 11 of high temperature sintering furnace 1, to completing the white clouds building stones of high temperature sintering, to provide cooling air to carry out cooling, and cooling air carries out cooling rear its temperature to rhombspar material and gets a promotion, and then participates in the combustion processes of the fuel in high temperature sintering furnace 1.And the amount that can realize cooling air by adjusting the air output of cooling blower 15 is greater than the required air capacity of fuel combustion that high temperature burner 10 is introduced, fully superfluous to ensure the interior air of high temperature sintering furnace 1.Low temperature burner 3, that high temperature burner 10 all adopts extraneous heat-eliminating medium to carry out is cooling, to ensure that burner normally moves.Low temperature burner 3 and high temperature burner 10 can adopt the modes such as water-cooled, air-cooled or oil cooling to carry out cooling.
In the present embodiment, the method for calcinating of rhombspar comprises the following steps:
Step 1. cloth
The high white clouds building stones of foreign matter content are carried out to the light-burned light-burned material that obtains, then light-burned material is digested to remove impurity, postdigestive rhombspar directly carries out pressure ball and obtains digesting ball material after levigate, comparatively easy to the direct pressure ball of digestion rhombspar.The opening for feed 8 of by feeding cart, digestion ball material being sent into low-temperature decomposition stove 2 tops after pressure ball carries out low-temperature decomposition in opening for feed 8 is sent into low-temperature decomposition stove 2.
Step 2. low-temperature decomposition
The part high-temperature flue gas of the part waste gas that low-temperature decomposition stove 2 is refluxed by low temperature burner 3, low-temperature decomposition stove 2 tops and high temperature sintering furnace 1 top suction provides thermal source, by regulating the amount of three strands of hot-fluids to ensure the stable of low-temperature decomposition stove 2 interior envrionment temperatures.Wherein, the spent air temperture that furnace roof refluxes is minimum, after mixing fresh air, its temperature is substantially in 180 DEG C, next is the flue gas upwards entering by furnace gas communicating pipe 5 from bottom high temperature sintering furnace 1, temperature is greatly about 700～800 DEG C, temperature after this two fluid streams blending, lower than 600 DEG C, therefore also needs the heat that utilizes low temperature burner 3 fuel gas burings to produce to supplement.Like this, pass through temperature monitoring, temperature to low-temperature decomposition stove 2 inside regulates: in the time that the temperature in low-temperature decomposition stove 2 is too low, be arranged on valve on return line by adjustment and suitably reduce the exhausted air quantity that furnace roof refluxes, or by adjusting low temperature burner 3 suitably to increase the gas quantity of low temperature burner 3; In the time of excess Temperature in low-temperature decomposition stove 2, can suitably increase the exhausted air quantity that furnace roof refluxes, or suitably reduce the gas quantity of low temperature burner 3, finally control the interior temperature-stable of low-temperature decomposition stove 2, make furnace temperature remain on 600～1000 DEG C.
Digestion ball material decomposes after 2～6 hours under 600～1000 DEG C of low temperature environments, enters and in high temperature sintering furnace 1, carries out high-temperature calcination through tremie pipe 9.
Step 3. is calcined
The thermal source of high temperature sintering furnace 1 is mainly from the chemical heat that fuel combustion produces of high temperature burner 10, near high temperature burner 10, the temperature in high temperature sintering region is 1700～1900 DEG C, fuel enters high temperature burner 10 and burns after mixing with combustion air, near digestion ball material high temperature burner 10 is carried out to high-temperature calcination.In order to ensure complete combustion of fuel, the cooling air that bottom coohng wind inlet 11 is sent into completes after cooling sintered balls material, is upwards flowing near its fuel combustion of participation of high temperature burner 10.
In addition, the high temperature air producing after high temperature burner 10 burning high temperature sintering furnace 1 interior on flow, participate in the preheating of stove internal upper part digestion ball material, can reduce like this normal temperature combustion-supporting air quantity that high temperature burner 10 is sent into, be conducive to the physical thermal of second stage employ sintered balls material, improved the efficiency of utilization in high-temperature calcination process.
Digestion ball material is from top to bottom divided into successively and is divided into preheating, high-temperature calcination, cooling three processes in the interior calcining of high temperature sintering furnace 1, and the residence time of material in whole bottom high temperature sintering furnace 1 is 2～3 hours.Complete waste gas after high-temperature calcination and preheating at the top of high temperature sintering furnace 1, enter in the annular chamber 4 of low-temperature decomposition stove 2 by being communicated with furnace gas pipe 5.
Step 4. is cooling
Sintered balls material after high-temperature calcination produces by cooling from the cooling air of cooling blower 15, obtains volume density at 3.2t/m at the cooling zone that is positioned at high temperature sintering furnace 1 bottom
3above sintered balls material, cooling blower 15 is by providing a large amount of cooling airs to realize the quick cooling of high temperature sintering ball material.Cooled sintered balls material is discharged through discharge opening 12.
Embodiment bis-
The present embodiment is with the difference of embodiment mono-: the high-temperature flue gas at high temperature sintering furnace top enters in low-temperature decomposition stove by being communicated with furnace gas pipe, the heat that high-temperature flue gas is brought into accounts for 30% of low-temperature decomposition stove institute heat requirement, and the heat that low temperature burner combustion produces accounts for 70% of low-temperature decomposition stove institute heat requirement.
Embodiment tri-
The present embodiment is with the difference of embodiment mono-: the high-temperature flue gas at high temperature sintering furnace top enters in low-temperature decomposition stove by being communicated with furnace gas pipe, the heat that high-temperature flue gas is brought into accounts for 50% of low-temperature decomposition stove institute heat requirement, and the heat that low temperature burner combustion produces accounts for 50% of low-temperature decomposition stove institute heat requirement.
Embodiment tetra-
The present embodiment is with the difference of embodiment mono-: the high-temperature flue gas at high temperature sintering furnace top enters in low-temperature decomposition stove by being communicated with furnace gas pipe, the heat that high-temperature flue gas is brought into accounts for 70% of low-temperature decomposition stove institute heat requirement, and the heat that low temperature burner combustion produces accounts for 30% of low-temperature decomposition stove institute heat requirement.
Embodiment five
The present embodiment is with the difference of embodiment mono-: the high-temperature flue gas at high temperature sintering furnace top enters in low-temperature decomposition stove by being communicated with furnace gas pipe, the heat that high-temperature flue gas is brought into accounts for 95% of low-temperature decomposition stove institute heat requirement, and the heat that low temperature burner combustion produces accounts for 5% of low-temperature decomposition stove institute heat requirement.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, drop on the protection domain of the utility model requirement.
Claims (10)
1. low-temperature decomposition and a high temperature sintering all-in-one oven, is characterized in that: contain upper and lower two portions body of heater, top is low-temperature decomposition stove, and bottom is high temperature sintering furnace, and the two is communicated with by tremie pipe; The top of described low-temperature decomposition stove is provided with towards the opening for feed in low-temperature decomposition stove, the top of described low-temperature decomposition stove is provided with fresh air inlet and waste gas outlet, middle part is provided with one group of circumferential uniform low temperature burner along furnace shell, described low temperature burner with enter interior burning of stove and be communicated with for material in stove provides the first fuel, the combustion air source of low-temperature decomposition heat energy; The middle part of described high temperature sintering furnace is provided with one group of circumferential uniform high temperature burner along furnace shell, described high temperature burner with enter burning in stove and be communicated with for material in stove provides the second fuel, the combustion air source of high temperature sintering heat energy, the bottom of described high temperature sintering furnace is provided with discharge opening; The annular chamber towards outer lug is extended along housing circumferential direction in the bottom of described low-temperature decomposition stove, uniform one group of furnace gas import on the bottom surface of described annular chamber, and described furnace gas import is communicated with the top of high temperature sintering furnace by being communicated with furnace gas pipe.
2. low-temperature decomposition according to claim 1 and high temperature sintering all-in-one oven, it is characterized in that: the lower end of described low-temperature decomposition stove has funnelform feed opening, described feed opening is connected with telescopic tremie pipe, and the top of high temperature sintering furnace is stretched in the bottom of described tremie pipe.
3. low-temperature decomposition according to claim 1 and high temperature sintering all-in-one oven, is characterized in that: described material is at top low-temperature decomposition stove, bottom high temperature sintering furnace and be communicated with in the tremie pipe of upper and lower stove and form a stock column.
4. low-temperature decomposition according to claim 1 and high temperature sintering all-in-one oven, it is characterized in that: described fresh air inlet and waste gas outlet are oppositely arranged on the top of low-temperature decomposition stove, the normal temperature fresh air entering from fresh air inlet mixes with the high-temp waste gas that is positioned at low-temperature decomposition furnace body top; Described waste gas outlet is communicated with return line, and the outlet of described return line is towards low temperature burner.
5. low-temperature decomposition according to claim 4 and high temperature sintering all-in-one oven, it is characterized in that: described waste gas outlet is connected with chimney by smoke discharging pipe, in described smoke discharging pipe, be provided with the smoke exhaust fan of wind direction towards chimney, the front that is positioned at smoke exhaust fan in described smoke discharging pipe is also provided with fly-ash separator.
6. low-temperature decomposition according to claim 1 and high temperature sintering all-in-one oven, it is characterized in that: the bottom of described high temperature sintering furnace is provided with cooling air import, described cooling air import with provide the cooling blower of cooling air to be communicated with for material in stove, and the cooling air volume that provides of described cooling blower is greater than the required air capacity of fuel combustion that high temperature burner is introduced.
7. low-temperature decomposition according to claim 1 and high temperature sintering all-in-one oven, is characterized in that: described low temperature burner, that high temperature burner all adopts extraneous heat-eliminating medium to carry out is cooling.
8. low-temperature decomposition according to claim 1 and high temperature sintering all-in-one oven, is characterized in that: in the furnace shell of described low-temperature decomposition stove and high temperature sintering furnace, built refractory materials by laying bricks or stones.
9. low-temperature decomposition according to claim 1 and high temperature sintering all-in-one oven, it is characterized in that: the high-temperature flue gas at described high temperature sintering furnace top enters in low-temperature decomposition stove by being communicated with furnace gas pipe, the heat that described high-temperature flue gas is brought into accounts for the 30-95% of low-temperature decomposition stove institute heat requirement, and the heat that described low temperature burner combustion produces accounts for the 5-70% of low-temperature decomposition stove institute heat requirement.
10. low-temperature decomposition according to claim 3 and high temperature sintering all-in-one oven, it is characterized in that: described material forms the windrow angle with certain angle in annular chamber, and the bottom surface radius at described windrow angle is less than the vertical range between inwall and the furnace gas import of described low-temperature decomposition stove.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193198A (en) * | 2014-08-22 | 2014-12-10 | 江苏中圣园科技股份有限公司 | Low-temperature decomposition and high-temperature sintering integrated furnace |
| CN107265890A (en) * | 2017-08-09 | 2017-10-20 | 徐州贝克福尔节能环保技术有限公司 | Magnesite light calcined magnesia and dead burned magnesia production line integrated equipment and method |
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2014
- 2014-08-22 CN CN201420479482.9U patent/CN203999383U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193198A (en) * | 2014-08-22 | 2014-12-10 | 江苏中圣园科技股份有限公司 | Low-temperature decomposition and high-temperature sintering integrated furnace |
| CN104193198B (en) * | 2014-08-22 | 2016-03-02 | 江苏中圣园科技股份有限公司 | Low-temperature decomposition and high temperature sintering all-in-one oven |
| CN107265890A (en) * | 2017-08-09 | 2017-10-20 | 徐州贝克福尔节能环保技术有限公司 | Magnesite light calcined magnesia and dead burned magnesia production line integrated equipment and method |
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Granted publication date: 20141210 Effective date of abandoning: 20160302 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |