CN204607863U - There is the bulk material roasting shaft kiln of arched girder - Google Patents
There is the bulk material roasting shaft kiln of arched girder Download PDFInfo
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- CN204607863U CN204607863U CN201520283505.3U CN201520283505U CN204607863U CN 204607863 U CN204607863 U CN 204607863U CN 201520283505 U CN201520283505 U CN 201520283505U CN 204607863 U CN204607863 U CN 204607863U
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- arched girder
- kiln body
- kiln
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- bulk material
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Abstract
The utility model relates to a kind of bulk material roasting shaft kiln with arched girder, comprise kiln body (6), arched girder and hot gas flow guide arrangement, it is inner that arched girder is supported and fixed on kiln body (6), and kiln body (6) is provided with the hole corresponding with arched girder end face; The below of arched girder and the inwall of kiln body (6) surround combustion chamber, are provided with burner in combustion chamber; Hot gas flow guide arrangement comprises suction beam, guiding device and power set (7), guiding device connects suction beam and power set (7), power set (7) and guiding device are positioned at kiln body (6) outside, high-temperature gas in kiln body (6) enters suction beam, and the high-temperature gas in suction beam guides and enters in kiln body (6) by power set (7).The utility model greatly improves the processing efficiency of the roasting shaft kiln of bulk material, outside the end face of arched girder is directly exposed to, and rapid heat dissipation, without the need to arranging refrigerating unit in addition, cost-saving.The whole cross section of kiln body all can be utilized effectively, and improves the production capacity of kiln body.
Description
Technical field
The utility model relates to kiln, more particularly, relates to a kind of bulk material roasting shaft kiln with arched girder.
Background technology
At present, be used for the bulk materials such as roasting lime shaft furnace have the MAERZ lime kiln of Switzerland, the sleeve kiln of Germany, gondola oil cooling beam type kiln, high pressure periphery burner gas-burned vertical limekiln and central burner nozzle gas-burned vertical limekiln etc.
MAERZ lime kiln is the lime roasting shaft kiln that Austrian Si meter Te and Huo Foer developed in nineteen fifty-seven, therefore this kiln is also known as Si meter Te-Huo Foer kiln.MAERZ lime kiln is current one of state-of-the-art lime roasting shaft kiln in the world, and this kiln is made up of two identical kiln thoraxes, and during a thorax roasting, another thorax preheating, its major advantage hear rate is low, is generally 850-900x4.3kj/kg, and finished product activity of lime height is 350ml.But the kiln body of MAERZ lime kiln is complicated, and burner arranges too much, easy burn-out, and equipment is many, investment is large, and power consumption is high.
Gondola oil cooling beam type shaft furnace is also Fu Kasi kiln, and this kiln arranges several and inserts in kiln with the oil cooled beam of heat conduction, and under the protection of beam, several burners reach in kiln and carry out roasting to material in material, therefore this kiln also claims beam type kiln.The operation of this kiln advantage is comparatively simple, and Product Activity degree is greater than 330ml, but burner arranges many, beam easy burn-out, and beam cost is high, and product hear rate is higher, is greater than 1200x4.3kj/kg.
The nineties in last century, China have developed periphery burner gas-burned vertical limekiln, and this kiln is provided with multiple high-pressure gas burner at its periphery, and under high pressure, flame sprays in material and carries out roasting.Gas-burned vertical limekiln kiln body is simple, and easy to operate, cost is low, and activity of lime can reach more than 310ml, but its hear rate is high, and especially use during blast furnace gas and reach more than 1500x3kj/kg, in kiln, section temperature is uneven.This kiln can only use geseous fuel, and fuel tolerance is very little.
Central burner nozzle gas-burned vertical limekiln is the gas combusting limestone kiln of the development beginning of this century, a burner is established at the gas-burned vertical limekiln center that this kiln is using at present, to solve the uneven problem of material section temperature, makes gas-burned vertical limekiln section temperature in kiln more even, but central burner nozzle complex structure, not easily changes.Other relative merits of central burner nozzle gas-burned vertical limekiln are the same with gas-burned vertical limekiln.
Double shell shaft kiln is the lime roasting shaft kiln that fritz Ka Er and Beckenbach were developed in nineteen sixty, therefore this kiln is also known as Ka Er-Beckenbach kiln.Sleeve kiln is current one of state-of-the-art lime roasting shaft kiln in the world, and this kiln is made up of two circular concentric kiln thoraxes, the in-built materials of sleeve of two circular compositions, and inner circle walks the waste gas of cooling air and fuel combustion generation.Roasting band is half inverse half same flow operation, preheating zone is counter-current operation.Its major advantage hear rate is low, is generally 950x4.3kj/kg, and finished product activity of lime is at more than 330ml.But the kiln body of double shell shaft kiln is very complicated with operation, investment is large.
Summary of the invention
The technical problems to be solved in the utility model is, provides a kind of bulk material roasting shaft kiln with arched girder, and the cross section of its kiln body utilizes area large, roasting uniformity, and roasting efficiency is high.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of bulk material roasting shaft kiln with arched girder, comprise kiln body, also comprise arched girder and hot gas flow guide arrangement, it is inner that described arched girder is supported and fixed on described kiln body, and described kiln body is provided with the hole corresponding with arched girder end face; The below of described arched girder and the inwall of kiln body surround combustion chamber, are provided with burner in described combustion chamber;
Described hot gas flow guide arrangement comprises suction beam, guiding device and power set, described guiding device connects suction beam and power set, described power set and guiding device are positioned at the external side of kiln, high-temperature gas in kiln body enters suction beam, high-temperature gas in suction beam guides and enters in kiln body by described power set, a part for the high-temperature gas introduced enters combustion chamber and is formed and flow calcining zone, and the hot gas flow that another part and burner combustion produce forms adverse current calcining zone.
In such scheme, described burner comprises main burner, and described main burner along kiln body circumferentially, and is positioned at below described arched girder.
In such scheme, described burner also comprises auxiliary burner, and described auxiliary burner along kiln body circumferentially, and is crisscross arranged with described main burner.
In such scheme, described burner also comprises central burner nozzle, and described central burner nozzle is arranged on the center of described arched girder, is provided with the gas passage be communicated with described central burner nozzle in described supporting beam.
In such scheme, the middle part of described arched girder is provided with central burner nozzle maintenance room.
In such scheme, the end face of described arched girder has the gradient.
In such scheme, the cross section of described kiln body is circular or rectangle.
In such scheme, described arched girder arranges one or more with layer, arranges one or more layers arched girder in kiln body, and described in multilayer, arched girder layering is arranged in a crossed manner.
In such scheme, the wall body of described arched girder is interlayer wall, and its inside is provided with cooling channel.
In such scheme, the outside of described kiln body is provided with the air heat exchanger be connected with burner blower and the gas change heater be connected with coal gas pipe valve, described air heat exchanger is to the preheating of air passing into kiln body, described gas change heater is to the gas preheating passing into kiln body, and the high-temperature gas in described kiln body is also entered in air heat exchanger and gas change heater by suction beam.
Implement the bulk material roasting shaft kiln with arched girder of the present utility model, there is following beneficial effect:
1, the utility model forms combustion chamber by arranging arched girder, roasting in combustion chamber after material falls into from top, and by power set, the high-temperature gas guiding in suction beam is entered in kiln body, a part for the high-temperature gas introduced enters combustion chamber and is formed and flow calcining zone, the hot gas flow that another part and burner combustion produce forms adverse current calcining zone, and through the top of arched girder, effect allows material roll full and uniform roasting to material.Greatly improve the processing efficiency of the roasting shaft kiln of bulk material.
2, kiln body is provided with the hole corresponding with arched girder end face, and outside the end face of arched girder is directly exposed to, rapid heat dissipation, can not arrange refrigerating unit, cost-saving.
3, the whole cross section of kiln body all can be utilized effectively, cost-saving, and improves the production capacity of kiln body.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the system schematic of the bulk material roasting shaft kiln with arched girder;
Fig. 2 is the structural representation of the bulk material roasting shaft kiln with arched girder;
Fig. 3 is the A-A sectional view in Fig. 2;
Fig. 4 is the B-B sectional view in Fig. 2;
Fig. 5 is the schematic diagram of another embodiment of cambered beam;
Fig. 6 is the schematic diagram of lower another embodiment of arched girder;
Fig. 7 is the schematic diagram of rectangular kiln body;
Fig. 8 is the schematic diagram of another embodiment of rectangular kiln body;
Fig. 9 is the sectional drawing of arched girder steel construction part.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As Figure 1-Figure 4, the bulk material roasting shaft kiln with arched girder of the present utility model comprises kiln body 6, arched girder and hot gas flow guide arrangement.
Arched girder is supported and fixed on that kiln body 6 is inner, and kiln body 6 is provided with the hole corresponding with arched girder end face, outside the end face of arched girder is directly exposed to, and rapid heat dissipation, without the need to arranging refrigerating unit in addition, cost-saving.The below of arched girder and the inwall of kiln body 6 surround combustion chamber, are provided with burner in combustion chamber.Hot gas flow guide arrangement comprises suction beam, guiding device and power set 7, and guiding device connects suction beam and power set 7, and power set 7 and guiding device are positioned at outside kiln body 6.Guiding device in the present embodiment is pipeline, and power set 7 can be injector or high-temperature blower, is preferably injector.
Arched girder can arrange one or more with layer, arranges one or more layers arched girder in kiln body 6.When arranging multilayer arched girder, multilayer arched girder is crisscross arranged, and as shown in figures 3 to 6, is conducive to material rolling, fully calcined.Specifically arrange how many stringcourse beam to select according to the technique of the calcining of material.
Arched girder in the present embodiment is provided with two-layer, and the arched girder on upper strata arranges three cambered beams 2 (Fig. 3), and the arched girder of lower floor arranges three lower arched girders 4 (Fig. 4).Except the present embodiment, the utility model additionally provides the embodiment arranging four cambered beams 2 (Fig. 5), four lower arched girders 4 (Fig. 6, Fig. 8), single arched girder (Fig. 6).
Levels is respectively cambered beam 2 and lower arched girder 4, and upper and lower layer is respectively three equidistant arched girders, and the combustion chamber of corresponding formation is respectively upper combustion chamber 3 and lower combustion chamber 5, arranges suction beam 1 in upper combustion chamber 3, arranges lower suction beam 8 in lower combustion chamber 5.
High-temperature gas in lower combustion chamber 5 bottom kiln body 6 enters lower suction beam 8, high-temperature gas in lower suction beam 8 guides and enters in kiln body 6 by power set 7, a part for the high-temperature gas introduced enters combustion chamber and is formed and flow calcining zone, the hot gas flow that another part and burner combustion produce forms adverse current calcining zone, make the preheating zone in kiln body 6, roast area, cooling zone reach active balance, form negative-pressure operation in kiln.
The outside of kiln body 6 is provided with the air heat exchanger 9 be connected with burner blower 12 and the gas change heater 10 be connected with coal gas pipe valve 11, air heat exchanger 9 is to the preheating of air passing into kiln body 6, gas change heater 10 is to the gas preheating passing into kiln body 6, high-temperature gas in kiln body 6 also enters in air heat exchanger 9 and gas change heater 10 by upper suction beam 1, utilize high-temperature gas to carry out preheating to air and fuel, improve the efficiency of combustion of mixed gas.
Further, gas change heater 10 also connects sack cleaner 13, main smoke discharging blower fan 14 and chimney 15 successively, and upper strata top of combustion chamber is also provided with the pneumatic outlet be connected with sack cleaner 13.Flue gas in combustion chamber, upper strata is discharged from chimney 15 after dust removal process.
As shown in Fig. 3-Fig. 7, further, burner comprises main burner 17, and main burner 17 along kiln body 6 circumferentially, and is positioned at below arched girder.Burner also comprises auxiliary burner 19, and auxiliary burner 19 along kiln body 6 circumferentially, and is crisscross arranged with main burner 17.Burner can also comprise central burner nozzle 18, and central burner nozzle 18 is arranged on the center of arched girder, is provided with the gas passage be communicated with central burner nozzle 18 in supporting beam.The value volume and range of product that burner is arranged can be selected according to the actual size of kiln body 6 and production capacity.The middle part of arched girder is provided with central burner nozzle 18 and overhauls room 16, and people can directly enter in maintenance room 16, overhauls central burner nozzle 18 or changes.
Further, the end face of arched girder has the gradient, is convenient to blanking.
Further, the cross section of kiln body 6 is circular (Fig. 3-Fig. 6), rectangle (Fig. 7, Fig. 8) etc.
Further, as shown in Figure 9, the wall body of arched girder is interlayer wall, and its inside is provided with cooling channel 20, passes into cooling air or cooling fluid by cooling channel 20, can increase the cooling performance to arched girder further.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, also can make a lot of form, these all belong within protection of the present utility model.
Claims (10)
1. one kind has the bulk material roasting shaft kiln of arched girder, comprise kiln body (6), it is characterized in that, also comprise arched girder and hot gas flow guide arrangement, it is inner that described arched girder is supported and fixed on described kiln body (6), and described kiln body (6) is provided with the hole corresponding with arched girder end face; The below of described arched girder and the inwall of kiln body (6) surround combustion chamber, are provided with burner in described combustion chamber;
Described hot gas flow guide arrangement comprises suction beam, guiding device and power set (7), described guiding device connects suction beam and power set (7), described power set (7) and guiding device are positioned at kiln body (6) outside, high-temperature gas in kiln body (6) enters suction beam, high-temperature gas in suction beam guides and enters in kiln body (6) by described power set (7), a part for the high-temperature gas introduced enters combustion chamber and is formed and flow calcining zone, and the hot gas flow that another part and burner combustion produce forms adverse current calcining zone.
2. the bulk material roasting shaft kiln with arched girder according to claim 1, it is characterized in that, described burner comprises main burner (17), and described main burner (17) along kiln body (6) circumferentially, and is positioned at below described arched girder.
3. the bulk material roasting shaft kiln with arched girder according to claim 2, it is characterized in that, described burner also comprises auxiliary burner (19), described auxiliary burner (19) along kiln body (6) circumferentially, and is crisscross arranged with described main burner (17).
4. the bulk material roasting shaft kiln with arched girder according to claim 2, it is characterized in that, described burner also comprises central burner nozzle (18), described central burner nozzle (18) is arranged on the center of described arched girder, is provided with the gas passage be communicated with described central burner nozzle (18) in described supporting beam.
5. the bulk material roasting shaft kiln with arched girder according to claim 4, is characterized in that, the middle part of described arched girder is provided with central burner nozzle (18) maintenance room (16).
6. the bulk material roasting shaft kiln with arched girder according to claim 1, it is characterized in that, the end face of described arched girder has the gradient.
7. the bulk material roasting shaft kiln with arched girder according to claim 1, is characterized in that, the cross section of described kiln body (6) is circular or rectangle.
8. the bulk material roasting shaft kiln with arched girder according to claim 1, it is characterized in that, described arched girder arranges one or more with layer, and kiln body arranges one or more layers arched girder in (6), and described in multilayer, arched girder layering is arranged in a crossed manner.
9. the bulk material roasting shaft kiln with arched girder according to claim 1, is characterized in that, the wall body of described arched girder is interlayer wall, and its inside is provided with cooling channel (20).
10. the bulk material roasting shaft kiln with arched girder according to claim 1, it is characterized in that, the outside of described kiln body (6) is provided with the air heat exchanger (9) be connected with burner blower (12) and the gas change heater (10) be connected with coal gas pipe valve (11), described air heat exchanger (9) is to the preheating of air passing into kiln body (6), described gas change heater (10) is to the gas preheating passing into kiln body (6), high-temperature gas in described kiln body (6) is also entered in air heat exchanger (9) and gas change heater (10) by suction beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283505.3U CN204607863U (en) | 2015-05-05 | 2015-05-05 | There is the bulk material roasting shaft kiln of arched girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283505.3U CN204607863U (en) | 2015-05-05 | 2015-05-05 | There is the bulk material roasting shaft kiln of arched girder |
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| CN204607863U true CN204607863U (en) | 2015-09-02 |
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| CN201520283505.3U Expired - Fee Related CN204607863U (en) | 2015-05-05 | 2015-05-05 | There is the bulk material roasting shaft kiln of arched girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186739A (en) * | 2015-05-05 | 2016-12-07 | 武汉艾蒙窑炉技术有限公司 | There is the bulk material roasting shaft kiln of arched girder |
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2015
- 2015-05-05 CN CN201520283505.3U patent/CN204607863U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186739A (en) * | 2015-05-05 | 2016-12-07 | 武汉艾蒙窑炉技术有限公司 | There is the bulk material roasting shaft kiln of arched girder |
| CN106186739B (en) * | 2015-05-05 | 2018-05-22 | 武汉艾蒙窑炉技术有限公司 | Bulk material roasting shaft kiln with arched girder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20200505 |
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| CF01 | Termination of patent right due to non-payment of annual fee |