CN209836010U - Burning system of sleeve kiln - Google Patents
Burning system of sleeve kiln Download PDFInfo
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- CN209836010U CN209836010U CN201822190403.3U CN201822190403U CN209836010U CN 209836010 U CN209836010 U CN 209836010U CN 201822190403 U CN201822190403 U CN 201822190403U CN 209836010 U CN209836010 U CN 209836010U
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Abstract
The utility model relates to a sleeve kiln combustion system, including the kiln body, go up inner skleeve, lower inner skleeve, go up the combustion chamber, lower combustion chamber and water conservancy diversion cap, the water conservancy diversion cap is located the telescopic exit in the cooling zone. The upper inner sleeve is connected with a waste gas discharge pipeline through a waste gas outlet, the upper combustion chamber and the lower combustion chamber are respectively provided with a burner, and the burner is connected with a fuel pipeline. The sleeve kiln is provided with a lower inner sleeve central burner and tangential burners, the lower inner sleeve central burner is arranged on the upper portion of the flow guide cap, the tangential burners are distributed on the wall of the combustion chamber of the upper combustion chamber and/or the lower combustion chamber, and the lower inner sleeve central burner and the tangential burners are connected with a fuel pipeline and a combustion-supporting air pipeline. The utility model discloses an increase lower inner skleeve center nozzle and combustion chamber tangential nozzle, concentrate the burning with the buggy and change into the dispersion burning, effectively eliminated the ash content and formed the problem of nodulation near the arch bridge, avoid damaging the arch bridge and block material flow.
Description
Technical Field
The utility model belongs to the technical field of combustion apparatus, a limekiln combustion apparatus is related to, concretely relates to sleeve kiln combustion system.
Background
The sleeve kiln is used as an industrial kiln for efficiently calcining limestone, gas fuel combustion is usually adopted to provide heat energy, the gas fuel combustion is easy to control the temperature in the kiln, and the sleeve kiln is mostly used for calcining limestone in foreign countries by taking gas as fuel. Coal resources account for about 60% of primary energy consumption structures in China, and experts predict that coal still accounts for about 50% in 2050, namely, the energy production and consumption structures mainly based on coal in China cannot change greatly in a long time. As domestic coal fuel resources are rich, the fuel application range of the sleeve kiln needs to be expanded to better meet the market requirements.
In the prior art, the sleeve kiln burns and calcines limestone by spraying pulverized coal at pulverized coal burners of an upper combustion chamber and a lower combustion chamber. Because the space of the combustion chamber is limited, the pulverized coal can not be completely burnt in the combustion chamber, so that part of the pulverized coal can not be completely burnt, and the heat consumption is increased. The combustion temperature of the pulverized coal is high, and the ash content after combustion is easy to form a nodulation phenomenon near the arch bridge, so that the problems of arch bridge damage and material flow blockage are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sleeve kiln combustion system changes the concentrated burning of buggy into the dispersion burning, optimizes combustion system's constitution and structure, eliminates the ash content and forms the problem of nodulation near arched bridge, improves sleeve kiln combustion system's combustion effect, improves sleeve kiln lime product quality, reduces energy consumption.
The technical scheme of the utility model is that: the combustion system of the sleeve kiln comprises a kiln body, an upper inner sleeve, a lower inner sleeve, an upper combustion chamber, a lower combustion chamber and a flow guide cap, wherein the flow guide cap is positioned at an outlet of the lower inner sleeve of a cooling belt of the sleeve kiln. The upper inner sleeve is connected with a waste gas discharge pipeline through a waste gas outlet, the upper combustion chamber and the lower combustion chamber are respectively provided with a burner, and the burner is connected with a fuel pipeline. The sleeve kiln is provided with a lower inner sleeve central burner and tangential burners, the lower inner sleeve central burner is arranged on the upper part of the diversion cap, the tangential burners are distributed on the wall of the combustion chamber of the upper combustion chamber and/or the lower combustion chamber, and the lower inner sleeve central burner and the tangential burners are connected with a fuel pipeline and a combustion-supporting air pipeline.
The sleeve kiln is provided with a driving air pipeline, a driving air ring pipe, an ejector and a circulating flue gas outlet, the driving air pipeline is connected to the lower combustion chamber through the driving air ring pipe and the ejector, and the lower inner sleeve is connected to an ejecting gas inlet of the ejector through the circulating flue gas outlet. The lower inner sleeve is provided with a cooling interlayer, the sleeve kiln is provided with a combustion-supporting air ring pipe and a lower inner sleeve cooling air outlet, the cooling interlayer is connected to the combustion-supporting air ring pipe through the lower inner sleeve cooling air outlet, and the combustion-supporting air ring pipe is connected to air inlets of the burner and the tangential burner through a circulating combustion-supporting air pipeline. The sleeve kiln is provided with an emptying pipeline, one path of an outlet of the combustion-supporting air ring pipe is connected with the emptying pipeline, and the emptying pipeline is provided with a valve and a flowmeter.
The upper combustion chamber and the lower combustion chamber are both cylindrical structures. The tangential burners of the upper combustion chamber are arranged on the wall of the combustion chamber in a tangential distribution manner; the lower combustion chamber is provided with a driving air duct and an ash discharging channel, the driving air duct is arranged along the tangential direction of the combustion chamber wall of the lower combustion chamber, the outlet of the ejector is connected with the driving air duct, and the tangential burner of the lower combustion chamber and the driving air duct are tangentially distributed and installed on the combustion chamber wall along the same direction. The number of the tangential burners of each combustion chamber (the upper combustion chamber or the lower combustion chamber) is 0-15.
The burner is a gas fuel burner, a liquid fuel burner or a solid fuel burner or a combination of the three burners. The central burner and the tangential burner of the lower inner sleeve are gas fuel burners, liquid fuel burners or solid fuel burners or the combination of the three burners.
The utility model discloses the sleeve kiln combustion system is through inner skleeve center nozzle under the installation of inner skleeve export, at last combustion chamber with the lower combustion chamber increase tangential nozzle, change the concentrated burning of buggy into the dispersed combustion, optimize combustion system's structure and constitution, effectively eliminated the ash content near the problem that forms the nodule of arch bridge, avoided damaging the arch bridge and the obstructed problem of material flow, the combustion effect of sleeve kiln combustion system has been improved, be favorable to improving sleeve kiln lime product quality, reduce the energy consumption of lime production. The burners of the upper combustion chamber and the lower combustion chamber, the central burner of the lower inner sleeve, the tangential burner of the upper combustion chamber and the tangential burner of the lower combustion chamber can be used independently or in a mixed manner, and are adjusted according to actual working conditions and fuel conditions, so that the flexibility of the calcining operation of the sleeve kiln is increased.
Drawings
FIG. 1 is a schematic structural view of a combustion system of a sleeve kiln of the present invention;
FIG. 2 is a schematic structural diagram of a burner of the lower combustion chamber;
FIG. 3 is a schematic view of the structure of the burner of the upper combustion chamber.
1-driving air ring pipe, 2-combustion-supporting air ring pipe, 3-arch bridge, 4-upper combustion chamber, 5-cooling interlayer, 6-cooling air pipe, 7-emptying pipe, 8-waste gas outlet, 9-upper inner sleeve, 10-lower combustion chamber, 11-lower inner sleeve, 12-lower inner sleeve central burner, 13-ash discharge pipe, 14-burner, 15-combustion-supporting air pipe, 16-circulating flue gas outlet, 17-ejector, 18-driving air duct, 19-tangential burner, 20-kiln body, 21-ash discharge channel, 22-lower inner sleeve cooling air outlet, 23-flow guide cap, 24-combustion chamber wall.
Detailed Description
The present invention will be described in detail with reference to the following examples and drawings. The protection scope of the present invention is not limited to the embodiments, and those skilled in the art can make any changes within the scope defined by the claims.
Example 1
The utility model discloses sleeve kiln combustion system is shown in figure 1, including the kiln body 20, go up inner skleeve 9, lower inner skleeve 11, go up combustion chamber 4, lower combustion chamber 10, drive air pipeline, drive air ring pipe 1, combustion-supporting air ring pipe 2, ejector 17, lower inner skleeve center nozzle 12 and water conservancy diversion cap 23. The upper inner sleeve is connected to the exhaust gas discharge line via an exhaust gas outlet 8. The diversion cap is positioned at the outlet of the lower inner sleeve 11 of the lower sleeve kiln cooling zone, and the central burner 12 of the lower inner sleeve is arranged at the upper part of the diversion cap. The combustion chamber (including the upper combustion chamber 4 and the lower combustion chamber 10) is of an annular structure. The axial center of the inlet of the upper combustion chamber is provided with a burner 14, the lower combustion chamber is provided with a burner 14 and a tangential burner 19, the burner 14 and the tangential burner 19 are connected with a fuel pipeline, and the fuel pipeline is connected to a pulverized coal injection and metering unit. The lower inner sleeve 11 is provided with a cooling interlayer 5 for cooling the lower inner sleeve. The cooling jacket is connected to the combustion air bustle pipe 2 through a lower inner sleeve cooling air outlet 22, and the combustion air bustle pipe 2 is connected to the air inlets of the burners 4 and the tangential burners 19 through a combustion air pipeline 15. One path of the outlet of the combustion-supporting air ring pipe 2 is connected with a vent pipeline 7, and the vent pipeline is provided with a valve and a flowmeter.
As shown in fig. 2, the lower combustion chamber is provided with a driving air duct 18, an ash discharge passage 21 and a combustion chamber wall 24. The lower combustion chamber is provided with a burner 14 which is arranged at the axial position of the inlet of the combustion chamber. The number of the lower combustion chamber tangential burners 19 is 10, and the tangential burners 19 are arranged on the combustion chamber wall 24 of the lower combustion chamber in a tangential distribution. The drive air duct 18 has the same direction of rotation as the tangential burners 19 and is also arranged tangentially to the wall of the combustion chamber. The driving air pipeline is connected to a working gas inlet of the ejector 17 through a driving air ring pipe 1, the lower inner sleeve 11 is connected to an ejector gas inlet of the ejector through a circulating flue gas outlet 16, and an outlet of the ejector 17 is connected to a driving air duct 18 of the lower combustion chamber 10.
The burner 4 of the upper combustion chamber, the burner 4 of the lower combustion chamber, the central burner 12 of the lower inner sleeve and the tangential burner 19 of the lower combustion chamber can be used independently or mixed, and can be adjusted according to actual working conditions and fuel conditions, and the pulverized coal burner and the gas fuel burner can be used in a mixed manner, and the fuel consumption of the pulverized coal burner and the gas fuel burner can be adjusted.
And when the output is 300t/d, the upper combustion chamber 4 and the lower combustion chamber 10 normally use gas fuel burners, the central burner and the tangential burner of the lower inner sleeve are pulverized coal burners, and the central burner and the tangential burner of the lower inner sleeve and the tangential burner of the lower combustion chamber start to spray pulverized coal for combustion. Meanwhile, the gas fuel burner of the lower combustion chamber reduces the gas supply amount of the coal, and the heat of the reduced gas amount is equal to the heat of the increased coal powder. The gas fuel burner of the lower combustion chamber gradually reduces the gas quantity, and the gas quantity is reduced to half. Meanwhile, the pulverized coal injection amount of the central burner 12 of the lower inner sleeve is gradually increased to 160 kg/h, and the temperature in the lower inner sleeve is gradually increased to 1000 ℃ from 800 ℃ in a gas combustion state. The lime cooling air of the lower inner sleeve is used as secondary air of a central burner of the lower inner sleeve, and the burnt waste gas, the unreacted lime cooling air and the waste gas flowing downwards are driven into a lower inner sleeve combustion chamber by driving air through a circulating flue gas outlet to support combustion. 540 kg/h of coal powder (6000 kcal of coal powder) is gradually sprayed into the tangential nozzle 19 of the lower combustion chamber, and the coal powder, the driving air and the driven inner sleeve waste gas are fully mixed and combusted to jointly enter the combustion chamber. Because the tangential injection is adopted, the combustion time of the pulverized coal is increased, the pulverized coal is fully combusted, the phenomenon that waste gas enters the arch bridge and is not combusted is avoided, and the problems of accretion and channel blockage are reduced. Thirty percent of waste gas burnt out enters the lower inner sleeve as co-current waste gas, seventy percent of waste gas enters the annular channel in the kiln in a sub-flow mode from the lower part of the arch bridge and upwards flows, and the waste gas generated by the upper combustion chamber are exhausted out of the kiln after passing through a calcining zone and a preheating zone.
Example 2
The structure of this embodiment is the same as that of embodiment 1, and the process is slightly different: when the output is 300t/d, the upper combustion chamber 4 and the lower combustion chamber 10 normally use gas fuel burners, and the central burner 19 and the tangential burner of the lower inner sleeve are pulverized coal burners. The coal dust is sprayed into the lower inner sleeve central burner 19 and the tangential burner for combustion, meanwhile, the gas supply amount of the gas fuel burner of the lower combustion chamber is reduced, and the heat of the reduced gas amount is equal to the heat of the increased coal dust. The gas fuel burner of the lower combustion chamber gradually reduces the gas supply amount until the gas is completely stopped supplying; meanwhile, the pulverized coal injection amount of the central burner of the lower inner sleeve is gradually increased to 160 kg/h, and the temperature in the lower inner sleeve is gradually increased to 1000 ℃ from 800 ℃ in a gas combustion state. The lime cooling air of the lower inner sleeve is used as secondary air of a central burner of the lower inner sleeve, and the burnt waste gas, the unreacted lime cooling air and the waste gas flowing downwards are driven into a combustion chamber of the lower inner sleeve by driving air through a circulating flue gas outlet. 1240 kg/h of coal powder (6000 kcal of coal powder) is gradually sprayed into the tangential nozzles of the lower combustion chamber, and the coal powder, the driving air and the driven inner sleeve waste gas are fully mixed and combusted to jointly enter the combustion chamber. Because the tangential injection is adopted, the combustion time of the pulverized coal is increased, the pulverized coal is fully combusted, the phenomenon that waste gas enters the arch bridge and is not combusted is avoided, and the problems of accretion and channel blockage are reduced. Thirty percent of waste gas burnt out enters the lower inner sleeve as co-current waste gas, seventy percent of waste gas enters the annular channel in the kiln in a sub-flow mode from the lower part of the arch bridge and upwards flows, and the waste gas generated by the upper combustion chamber are exhausted out of the kiln after passing through a calcining zone and a preheating zone.
Example 3
The structure of this embodiment is the same as that of embodiment 1, and the process is slightly different: when the output is 300t/d, the upper combustion chamber 4 and the lower combustion chamber 10 normally use gas fuel burners, the tangential burners of the lower combustion chamber start to spray pulverized coal for combustion, meanwhile, the gas fuel burners of the lower combustion chamber reduce the amount of supplied coal gas, and the heat of the reduced amount of coal gas is equal to the heat of the increased pulverized coal. The gas fuel burners of the lower combustion chamber gradually reduce the gas supply amount, and the gas amount is reduced to a half. The lime cooling air of the lower inner sleeve and the waste gas flowing down are driven into the combustion chamber of the lower inner sleeve by the driving air through the circulating flue gas outlet. 700 kg/h of coal dust (6000 kcal of coal dust) is gradually sprayed into the tangential nozzles of the lower combustion chamber, and the coal dust and the driving air are fully mixed with the inner sleeve exhaust gas driven down and are combusted, and the coal dust and the driving air enter the combustion chamber together. Because the tangential injection is adopted, the combustion time of the pulverized coal is increased, the pulverized coal is fully combusted, the phenomenon that waste gas enters the arch bridge and is not combusted is avoided, and the problems of accretion and channel blockage are reduced. Thirty percent of waste gas burnt out of the kiln enters the lower inner sleeve as co-current waste gas again, seventy percent of waste gas enters the annular channel in the kiln from the circulating flue gas outlet 16 and upwards flows with the waste gas generated by the upper combustion chamber to be discharged out of the kiln after passing through the calcining zone and the preheating zone.
Example 4
The structure of this embodiment is the same as that of embodiment 1, and the process is slightly different: at the output of 600t/d, the gas fuel burners are normally used in the upper combustion chamber 4 and the lower combustion chamber 10, the pulverized coal starts to be sprayed into the central burner 12 of the lower inner sleeve for combustion, the gas fuel burners of the lower combustion chamber reduce the gas supply amount, and the heat of the reduced gas amount is equal to the heat of the increased pulverized coal. The gas fuel burners of the lower combustion chamber gradually reduce the gas supply amount, and the gas amount is reduced by twenty-four percent. Meanwhile, the pulverized coal injection amount of the central burner of the lower inner sleeve is gradually increased to 650 kg/h, and the temperature in the lower inner sleeve is gradually increased from 800 ℃ in a gas combustion state to 1200 ℃. The lime cooling air of the lower inner sleeve is used as secondary air of a central burner of the lower inner sleeve, and the burnt waste gas, the unreacted lime cooling air and the waste gas flowing downwards are driven into a combustion chamber of the lower inner sleeve by driving air through a circulating flue gas outlet. And mixing the waste gas generated by the gas fuel burner into the kiln to calcine lime, wherein thirty percent of the burnt waste gas is used as co-current waste gas to reenter the lower inner sleeve, seventy percent of the waste gas is divided from the lower part of the arch bridge to enter an annular channel in the kiln upwards, and the waste gas generated by the upper combustion chamber are discharged out of the kiln after passing through a calcining zone and a preheating zone. Coal gas is replaced by part of coal powder, so that the coal gas consumption is reduced, and the application range of the fuel of the sleeve kiln is widened.
Example 5
The present embodiment is different from embodiment 1 in that: as shown in fig. 3, the upper combustion chamber is also provided with a tangential burner 19, the upper combustion chamber is cylindrical, and the burner 4 is axially arranged at the center of the inlet of the combustion chamber. Tangential burners 19 of the combustion chamber are arranged on the wall 24 of the combustion chamber in a tangentially distributed manner, and are connected with the fuel pipeline and the combustion air pipeline.
When the output is 600t/d, the upper combustion chamber 4 and the lower combustion chamber 10 normally use gas fuel burners, the central burner and the tangential burner of the lower inner sleeve are pulverized coal burners, and the central burner of the lower inner sleeve and the tangential burners of the upper combustion chamber and the lower combustion chamber start to spray pulverized coal for combustion. Meanwhile, the gas fuel burners of the upper combustion chamber and the lower combustion chamber reduce the gas supply amount, and the heat of the reduced gas amount is equal to the heat of the increased pulverized coal. The gas fuel burner of the lower combustion chamber gradually reduces the gas quantity, and the gas quantity is reduced to half. Meanwhile, the pulverized coal injection amount of the central burner 12 of the lower inner sleeve is gradually increased to 320 kg/h, and the temperature in the lower inner sleeve is gradually increased to 1000 ℃ from 800 ℃ in a gas combustion state. The lime cooling air of the lower inner sleeve is used as secondary air of a central burner of the lower inner sleeve, and the burnt waste gas, the unreacted lime cooling air and the waste gas flowing downwards are driven into a lower inner sleeve combustion chamber by driving air through a circulating flue gas outlet to support combustion. 1080 kg/h of coal dust (6000 kcal of coal dust) is gradually sprayed into the tangential nozzles 19 of the lower combustion chamber, and the coal dust, the driving air and the driven inner sleeve waste gas are fully mixed and combusted to jointly enter the combustion chamber. 520 kg/h of coal powder (6000 kcal of coal powder) is gradually sprayed into the tangential burner 19 of the upper combustion chamber, and the coal powder is combusted along the tangential direction and the waste gas combusted by the gas fuel burner of the upper combustion chamber is fully mixed and enters an annular channel between the inner cylinder and the outer cylinder of the sleeve kiln to calcine lime. Because the tangential injection is adopted, the combustion time of the pulverized coal is increased, the pulverized coal is fully combusted, the phenomenon that waste gas enters the arch bridge and is not combusted is avoided, and the problems of accretion and channel blockage are reduced. Thirty percent of waste gas burnt out by the lower combustion chamber enters the lower inner sleeve as co-current waste gas, seventy percent of waste gas enters the annular channel in the kiln in a sub-flow mode from the lower part of the arch bridge and upwards flows, and the waste gas generated by the upper combustion chamber are discharged out of the kiln after passing through a calcining zone and a preheating zone.
Example 6
The structure of this embodiment is the same as that of embodiment 5, and the operation process is slightly different: when the output is 600t/d, the upper combustion chamber 4 and the lower combustion chamber 10 normally use gas fuel burners, the central burner and the tangential burner of the lower inner sleeve are pulverized coal burners, and the central burner and the tangential burner of the upper combustion chamber of the lower inner sleeve start to spray pulverized coal for combustion. Meanwhile, the gas fuel burners of the upper combustion chamber and the lower combustion chamber reduce the gas supply amount, and the heat of the reduced gas amount is equal to the heat of the increased pulverized coal. The gas fuel burner of the upper combustion chamber gradually reduces the gas quantity, the gas quantity is reduced to half; the gas fuel burner of the lower combustion chamber gradually reduces the gas quantity, and the gas quantity is reduced by twelve percent. Meanwhile, the pulverized coal injection amount of the central burner 12 of the lower inner sleeve is gradually increased to 320 kg/h, and the temperature in the lower inner sleeve is gradually increased to 1000 ℃ from 800 ℃ in a gas combustion state. The lime cooling air of the lower inner sleeve is used as secondary air of a central burner of the lower inner sleeve, and the burnt waste gas, the unreacted lime cooling air and the waste gas flowing downwards are driven into a lower inner sleeve combustion chamber by driving air through a circulating flue gas outlet to support combustion. 520 kg/h of coal powder (6000 kcal of coal powder) is gradually sprayed into the tangential burner 19 of the upper combustion chamber, and the coal powder is combusted along the tangential direction and the waste gas combusted by the gas fuel burner of the upper combustion chamber is fully mixed and enters an annular channel between the inner cylinder and the outer cylinder of the sleeve kiln to calcine lime. Because the tangential injection is adopted, the combustion time of the pulverized coal is increased, the pulverized coal is fully combusted, the phenomenon that waste gas enters the arch bridge and is not combusted is avoided, and the problems of accretion and channel blockage are reduced. Thirty percent of waste gas burnt out by the lower combustion chamber enters the lower inner sleeve as co-current waste gas, seventy percent of waste gas enters the annular channel in the kiln in a sub-flow mode from the lower part of the arch bridge and upwards flows, and the waste gas generated by the upper combustion chamber are discharged out of the kiln after passing through a calcining zone and a preheating zone.
Example 7
The structure of this embodiment is the same as that of embodiment 5, and the operation process is slightly different: when the output is 600t/d, the upper combustion chamber 4 and the lower combustion chamber 10 normally use gas fuel burners, the tangential burners are coal powder burners, and the tangential burners of the upper combustion chamber start to spray coal powder for combustion. Meanwhile, the gas fuel burner of the upper combustion chamber reduces the gas supply amount of the coal, and the heat of the reduced gas amount is equal to the heat of the increased coal powder. The gas fuel burner of the upper combustion chamber gradually reduces the gas quantity, and the gas quantity is reduced to half. 520 kg/h of coal powder (6000 kcal of coal powder) is gradually sprayed into the tangential burner 19 of the upper combustion chamber, and the coal powder is combusted along the tangential direction and the waste gas combusted by the gas fuel burner of the upper combustion chamber is fully mixed and enters an annular channel between the inner cylinder and the outer cylinder of the sleeve kiln to calcine lime. Because the tangential injection is adopted, the combustion time of the pulverized coal is increased, the pulverized coal is fully combusted, the phenomenon that waste gas enters the arch bridge and is not combusted is avoided, and the problems of accretion and channel blockage are reduced. Thirty percent of waste gas burnt out by the lower combustion chamber enters the lower inner sleeve as co-current waste gas, seventy percent of waste gas enters the annular channel in the kiln in a sub-flow mode from the lower part of the arch bridge and upwards flows, and the waste gas generated by the upper combustion chamber are discharged out of the kiln after passing through a calcining zone and a preheating zone.
Claims (6)
1. A combustion system of a sleeve kiln comprises a kiln body (20), an upper inner sleeve (9), a lower inner sleeve (11), an upper combustion chamber (4), a lower combustion chamber (10) and a diversion cap (23), wherein the diversion cap is positioned at an outlet of the lower inner sleeve (11) of a cooling zone of the sleeve kiln; go up the inner skleeve and pass through exhaust outlet (8) and exhaust emission tube coupling, go up combustion chamber and lower combustion chamber and be equipped with nozzle (14) respectively, the nozzle is connected with fuel piping, its characterized in that: the sleeve kiln is provided with a lower inner sleeve center burner (12) and a tangential burner (19), the lower inner sleeve center burner is arranged on the upper portion of the diversion cap, the tangential burners are distributed and arranged on the combustion chamber wall (24) of the upper combustion chamber and/or the lower combustion chamber, and the lower inner sleeve center burner and the tangential burner are connected with a fuel pipeline and a combustion-supporting air pipeline.
2. The muffle combustion system of claim 1, wherein: the sleeve kiln is provided with a driving air pipeline, a driving air ring pipe (1), an ejector (17) and a circulating flue gas outlet (16), the driving air pipeline is connected to the lower combustion chamber (10) through the driving air ring pipe (1) and the ejector (17), and the lower inner sleeve (11) is connected to an ejecting gas inlet of the ejector through the circulating flue gas outlet (16).
3. The muffle combustion system of claim 1, wherein: the lower inner sleeve (11) is provided with a cooling interlayer, the sleeve kiln is provided with a combustion-supporting air ring pipe (2) and a lower inner sleeve cooling air outlet (22), the cooling interlayer is connected to the combustion-supporting air ring pipe (2) through the lower inner sleeve cooling air outlet (22), and the combustion-supporting air ring pipe (2) is connected to air inlets of the burners (14) and the tangential burners (19) through a circulating combustion-supporting air pipeline (15).
4. The muffle combustion system of claim 3, wherein: the sleeve kiln is provided with a vent pipeline (7), one path of an outlet of the combustion-supporting air ring pipe (2) is connected with the vent pipeline, and the vent pipeline is provided with a valve and a flowmeter.
5. The muffle combustion system of claim 2, wherein: the upper combustion chamber (4) and the lower combustion chamber (10) are both cylindrical structures; the tangential burners (19) of the upper combustion chamber are arranged on the wall (24) of the combustion chamber in a tangential distribution manner; the lower combustion chamber is provided with a driving air duct (18) and an ash discharging channel (21), the driving air duct (18) is arranged along the tangential direction of a combustion chamber wall (24) of the lower combustion chamber, an outlet of the ejector (17) is connected with the driving air duct (18), and tangential burners (19) of the lower combustion chamber and the driving air duct are tangentially distributed on the combustion chamber wall along the same direction; the number of the tangential burners of each combustion chamber is 0-15.
6. The muffle combustion system of claim 1, wherein: the burner is a gas fuel burner, a liquid fuel burner or a solid fuel burner or a combination of the three burners; the central burner (12) and the tangential burner (19) of the lower inner sleeve are gas fuel burners, liquid fuel burners or solid fuel burners or a combination of the three burners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822190403.3U CN209836010U (en) | 2018-12-25 | 2018-12-25 | Burning system of sleeve kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822190403.3U CN209836010U (en) | 2018-12-25 | 2018-12-25 | Burning system of sleeve kiln |
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| CN209836010U true CN209836010U (en) | 2019-12-24 |
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