CN211177900U - Double-channel fuel burner of rotary kiln - Google Patents
Double-channel fuel burner of rotary kiln Download PDFInfo
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- CN211177900U CN211177900U CN201921213974.2U CN201921213974U CN211177900U CN 211177900 U CN211177900 U CN 211177900U CN 201921213974 U CN201921213974 U CN 201921213974U CN 211177900 U CN211177900 U CN 211177900U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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Abstract
The utility model relates to a rotary kiln binary channels fuel combustor belongs to rotary kiln equipment technical field. The central air channel (1), the cyclone air channel (2), the outer flow air channel (3), the coke oven gas channel (4) and the natural gas channel (5) are sequentially concentric sleeve pipes, the central air channel (1), the cyclone air channel (2), the outer flow air channel (3), the coke oven gas channel (4) and the natural gas channel (5) are arranged at the most core part, and the outer flow air channel (3) is arranged at the most outer layer. The utility model has the advantages that: the corresponding fuel demand is estimated according to the instantaneous output of the rotary kiln, the fuel use mode is determined according to the real-time current situation of the supply of the purchased coke oven gas, the fuel use requirement of the rotary kiln in production is met, the precondition is created for the stable production of the rotary kiln, and the stable organization production operation of the rotary kiln under the designed output level is ensured.
Description
Technical Field
The utility model relates to a novel combustor device of rotary kiln belongs to rotary kiln equipment technical field.
Background
The production operation of calcining lime blocks by a rotary kiln belongs to a negative pressure operation process, a high temperature fan continuously extracts smoke from the interior of a kiln body through a kiln tail smoke pipeline to enable the interior of the kiln body to be in a negative pressure operation state during production, a burner extends into a kiln head cover and is positioned at the front end of the kiln body to burn, high temperature flame continuously extracts the smoke through the high temperature fan to move from a kiln head to a kiln tail, a preheater push rod pushes a kiln tail interior limestone of the kiln body to rotate the kiln body through a rotary kiln driving system to rotate the kiln body to roll from the kiln tail to the kiln head, the high temperature smoke and the limestone move in opposite directions in the kiln body and are subjected to heat radiation, and calcining limestone in the kiln body by heat conduction, convection heat conduction and the like, discharging the completely calcined lime blocks into a cooler at the kiln head position through the front end of the kiln body, cooling by calcining combustion-supporting air, discharging the cooled lime blocks out of the cooler, and conveying the lime blocks into a finished product bin by a finished product conveying system to wait for loading for steelmaking.
The rotary kiln calcination generally adopts coal gas single fuel as production fuel, and when the production occurs, the fuel supply is insufficient, so that the production is forced to be reduced, and the production and the supply of lime are influenced. Therefore, the rotary kiln double-channel fuel combustor device needs to be designed, the traditional single-channel fuel combustor is changed into a novel double-channel fuel combustor, the combustor of the original coke oven gas fuel channel is changed into the double-channel fuel combustor of the coke oven gas fuel channel and the natural gas fuel channel, and the problem of production stop and production reduction caused by insufficient fuel is solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rotary kiln binary channels fuel combustor device changes traditional single channel fuel combustor into novel binary channels fuel combustor, is changed into the binary channels fuel combustor of coke oven gas fuel passageway all the way and natural gas fuel passageway all the way by the combustor of former coke oven gas fuel passageway all the way, solves the not enough phenomenon that causes the shut down and subtract production of fuel.
The technical scheme of the utility model is that:
a double-channel fuel burner of a rotary kiln comprises a central air channel, a cyclone air channel, an outer air channel, a coke oven gas channel and a natural gas channel, wherein the central air channel, the cyclone air channel, the outer air channel, the coke oven gas channel and the natural gas channel are sequentially arranged in a concentric sleeve mode, the most core part is the central air channel, and the outermost layer is the outer air channel.
The front ends of the central air channel, the rotational flow air channel, the outer flow air channel, the coke oven gas channel and the natural gas channel are high-temperature-resistant wear-resistant cast steel parts, the rear ends of the central air channel, the rotational flow air channel, the outer flow air channel, the coke oven gas channel and the natural gas channel are stainless steel seamless steel tubes, and the central air channel, the rotational flow air channel.
The lengths of the front end high-temperature-resistant and wear-resistant cast steel parts of the central air channel, the rotational flow air channel, the outer flow air channel, the coke oven gas channel and the natural gas channel are 480-550 mm, and the length of each ring pipe channel is 10500-14600 mm.
The air outlet end of the rotational flow air channel is provided with a rotational flow plate, the air outlet end of the outer flow air channel is provided with a regulation plate, the air outlet ends of the outer flow air channel and the coke oven gas channel are provided with support ribs, and the rotational flow plate is composed of 18-30 strip-shaped rib plates.
The wall thickness of the central air channel, the cyclone air channel, the natural gas channel, the coke oven gas channel and the outer flow air channel is 13-22 mm.
The diameter of the inner wall of the central air channel is 55-65 mm, and the diameter of the inner wall of the outer air channel is 690-710 mm.
The included angle between the strip-shaped rib plate of the rotational flow plate and the front end face of the burner is 50-54 degrees.
The adjusting plate is provided with 25-35 air outlets, and the diameters of the air outlets are 38-42 mm.
And the air inlet ends of the central air channel, the rotational flow air channel and the external air channel are respectively provided with an air volume regulating valve I, an air volume regulating valve II and an air volume regulating valve III.
The spiral-flow plate rib has the thickness of 18-22 mm and the width of 75-85 mm.
The utility model has the advantages that: estimating the corresponding fuel demand according to the instantaneous output of the rotary kiln, wherein the production fuel is used in a mode of preferentially using coke oven gas with the optimal cost performance, and pure coke oven gas is used as production fuel when the supply of the coke oven gas can meet the production demand; when the supply quantity of the coke oven gas cannot meet the production demand, the mixed fuel of the coke oven gas and the natural gas is adopted as the production fuel; when no coke oven gas is supplied, pure natural gas is used as production fuel. According to the real-time current situation of the supply of the purchased coke oven gas, the use mode of the rotary kiln production fuel is determined, the requirement of the rotary kiln production fuel is met as the target of final fuel regulation, the precondition is created for the stable production of the rotary kiln, and the stable organization production operation of the rotary kiln under the designed yield level is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the utility model;
FIG. 3 is a schematic view of the air outlet end of the device of the present invention;
labeled in fig. 1: the device comprises a central air channel 1, a cyclone air channel 2, an outer air channel 3, a coke oven gas channel 4, a natural gas channel 5, a fuel burner 6, a control valve 7, a control valve 8, a burner moving trolley 9, a control valve group 10, a primary air fan 11, a moving trolley track 12, an external natural gas gasification station 13, an air volume regulating valve I14, an air volume regulating valve II 15, an air volume regulating valve III 16, an interface flange 17, an interface flange 18, a cyclone plate 19, a regulating plate 20 and support ribs 21.
Detailed Description
The invention will be further explained by way of example with reference to the accompanying drawings.
The figure shows that the rotary kiln double-channel fuel burner comprises a central air channel 1, a cyclone air channel 2, an outer air channel 3, a coke oven gas channel 4 and a natural gas channel 5, wherein the central air channel 1, the cyclone air channel 2, the outer air channel 3, the coke oven gas channel 4 and the natural gas channel 5 are sequentially arranged in a concentric sleeve mode, the central air channel 1 is arranged in the most core part, and the outer air channel 3 is arranged in the most outer layer.
The fuel combustor 6 is prepared by assembling heat-resistant and wear-resistant concentric seamless steel ring pipes, the concentric ring pipes extending into the front end of the kiln body are made of high-temperature-resistant and wear-resistant cast steel, and the concentric ring pipes at the front end of the high-temperature-resistant and wear-resistant cast steel are welded and assembled with the heat-resistant and wear-resistant concentric seamless steel ring pipes section by section. The front ends of the central air channel 1, the rotational flow air channel 2, the outer flow air channel 3, the coke oven gas channel 4 and the natural gas channel 5 are made of high-temperature-resistant and wear-resistant cast steel, the length of each ring pipe channel is 12000 mm, and the wall thickness is 20 mm.
The air outlet end of the rotational flow air channel 2 is provided with a rotational flow plate 19, the air outlet end of the outer flow air channel 3 is provided with an adjusting plate 20, the air outlet ends of the outer flow air channel 3 and the coke oven gas channel 4 are provided with support ribs 21, and the rotational flow plate 19 is composed of 22 strip-shaped rib plates. The diameter of the inner wall of the central air channel 1 is 60 mm, and the diameter of the inner wall of the outer flow air channel 3 is 700 mm.
The included angle between the strip-shaped rib plate of the swirl plate 19 and the front end face of the burner is 52 degrees. The adjusting plate 20 is provided with 30 air outlets, and the diameter of the air outlet is 40 mm.
And the air inlet ends of the central air channel 1, the rotational flow air channel 2 and the outer flow air channel 3 are respectively provided with an air volume regulating valve I14, an air volume regulating valve II 15 and an air volume regulating valve III 16.
The strip-shaped rib plate of the swirl plate 19 is 20 mm thick and 80 mm wide.
The combustor 6 is installed and positioned on a combustor moving trolley 9, a gas pipeline and control valve 7, a natural gas pipeline and control valve 3 metal hose are connected with a corresponding fuel interface flange of the combustor, the gas pipeline and control valve 2 are connected with a coke oven gas main pipeline, the natural gas pipeline and control valve 8 are connected with an external natural gas gasification station 13, an interface of the external natural gas gasification station 13 is butted with an interface of a special liquefied natural gas transport vehicle, a primary air pipeline and control valve group 10 metal hose is connected with a corresponding air channel flange interface of the combustor, and a primary air pipeline and control valve group 10 is connected with a primary air fan 11.
The fuel burner 6 arranged above the burner moving trolley 9 moves and positions the burner 6 to the working position of 1.5 meters at the front end of the kiln body through the burner moving trolley 9.
During production, fuel is sent into the kiln body at the position 1.5 meters in front of the kiln body at the front end of the fuel combustor 6 through the coke oven gas pipeline and the control valve 7 and the natural gas pipeline and the control valve 8, and the supply flow of the coke oven gas and the natural gas is regulated and controlled by controlling the regulating valve through the corresponding fuel pipeline.
The utility model discloses a use as follows:
the coke oven gas is sent to the position 1.5 meters away from the front end of the negative pressure kiln body through a coke oven gas pipeline, a control valve 7 and a fuel burner 6 to be used as fuel to participate in combustion, the externally-hung natural gas gasification station 13 gasifies pressurized natural gas and sends the gasified pressurized natural gas to the position 1.5 meters away from the front end of the negative pressure kiln body through a natural gas pipeline, a control valve 8 and the fuel burner 6 to be used as fuel to participate in combustion, a primary fan 11 sends air to the position 1.5 meters away from the front end of the negative pressure kiln body through a primary air pipeline, a control valve group 10 and the fuel burner 6 to be used as combustion improver to participate in combustion, and the input air quantity is regulated and controlled through an air quantity regulating valve I14. A coke oven gas pipeline and control valve 7 and a natural gas pipeline and control valve 8 are respectively provided with a flowmeter and an electric control valve, fuel adjusts the instantaneous use flow according to the supply amount of the coke oven gas and the production demand, the use mode of the fuel is determined (mode I: the coke oven gas is used independently; mode II: the mixed gas of the coke oven gas and the natural gas; mode III: the natural gas is used independently), primary combustion-supporting air adjusts and supplies combustion-supporting air volume by regulating and controlling the Hertz number of a variable frequency motor of a primary fan 11, the fuel supply is ensured to organize stable production on the premise of meeting the fuel production demand of the rotary kiln, and the influence on the yield and the quality of the white ash block produced by.
Claims (10)
1. A rotary kiln double-channel fuel burner is characterized by comprising a central air channel (1), a cyclone air channel (2), an outer air channel (3), a coke oven gas channel (4) and a natural gas channel (5), wherein the central air channel (1), the cyclone air channel (2), the outer air channel (3), the coke oven gas channel (4) and the natural gas channel (5) are sequentially arranged in a concentric sleeve mode, the most core part is the central air channel (1), and the outermost layer is the outer air channel (3).
2. The dual-channel fuel burner of the rotary kiln according to claim 1, wherein the front ends of the central air channel (1), the cyclone air channel (2), the outer stream air channel (3), the coke oven gas channel (4) and the natural gas channel (5) are high temperature resistant and wear resistant cast steel parts, and the rear ends are stainless steel seamless steel pipes which are welded and connected.
3. The rotary kiln dual-channel fuel burner as claimed in claim 2, wherein the front ends of the central air channel (1), the swirling air channel (2), the outer flowing air channel (3), the coke oven gas channel (4) and the natural gas channel (5) are made of high temperature resistant and wear resistant cast steel with a length of 480 and 550 mm, and the length of each ring pipe channel is 10500-14600 mm.
4. The rotary kiln dual-channel fuel burner as claimed in claim 1, wherein a cyclone plate (19) is mounted at the air outlet end of the cyclone air channel (2), a metering plate (20) is mounted at the air outlet end of the outer flow air channel (3), support ribs (21) are mounted at the air outlet ends of the outer flow air channel (3) and the coke oven gas channel (4), and the cyclone plate (19) is composed of 18-30 strip-shaped rib plates.
5. The dual-channel fuel burner of the rotary kiln according to claim 1, wherein the wall thickness of the central air channel (1), the swirling air channel (2), the natural gas channel (5), the coke oven gas channel (4) and the outer stream air channel (3) is 13-22 mm.
6. The dual channel fuel burner of the rotary kiln as claimed in claim 1, wherein the diameter of the inner wall of the central air channel (1) is 55-65 mm, and the diameter of the inner wall of the outer air channel (3) is 690-710 mm.
7. The dual-channel fuel burner of the rotary kiln according to claim 4, characterized in that the included angle between the strip-shaped rib plate of the rotational flow plate (19) and the front end face of the burner is 50-54 degrees.
8. The dual channel fuel burner of the rotary kiln according to claim 4, characterized in that the adjusting plate (20) is provided with 25-35 air outlet holes, the diameter of the air outlet holes being 38-42 mm.
9. The dual-channel fuel burner of the rotary kiln according to claim 1, wherein the air inlet ends of the central air channel (1), the swirling air channel (2) and the outer air channel (3) are respectively provided with an air volume regulating valve I (14), an air volume regulating valve II (15) and an air volume regulating valve III (16).
10. The dual path fuel burner of the rotary kiln according to claim 4, wherein the swirl plate (19) has a strip rib with a thickness of 18-22 mm and a width of 75-85 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921213974.2U CN211177900U (en) | 2019-07-30 | 2019-07-30 | Double-channel fuel burner of rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921213974.2U CN211177900U (en) | 2019-07-30 | 2019-07-30 | Double-channel fuel burner of rotary kiln |
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| Publication Number | Publication Date |
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| CN211177900U true CN211177900U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921213974.2U Active CN211177900U (en) | 2019-07-30 | 2019-07-30 | Double-channel fuel burner of rotary kiln |
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| CN (1) | CN211177900U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050209A (en) * | 2020-09-08 | 2020-12-08 | 合肥依科普工业设备有限公司 | Forced air cooling full-oxygen multi-stage burner |
| CN113636769A (en) * | 2021-07-29 | 2021-11-12 | 桂林理工大学 | Method and equipment for reducing carbon emission in cement clinker production |
| CN113803990A (en) * | 2021-09-24 | 2021-12-17 | 中信锦州金属股份有限公司 | Method for treating smoke of vanadium extraction rotary kiln by using burner |
-
2019
- 2019-07-30 CN CN201921213974.2U patent/CN211177900U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050209A (en) * | 2020-09-08 | 2020-12-08 | 合肥依科普工业设备有限公司 | Forced air cooling full-oxygen multi-stage burner |
| CN113636769A (en) * | 2021-07-29 | 2021-11-12 | 桂林理工大学 | Method and equipment for reducing carbon emission in cement clinker production |
| CN113803990A (en) * | 2021-09-24 | 2021-12-17 | 中信锦州金属股份有限公司 | Method for treating smoke of vanadium extraction rotary kiln by using burner |
| CN113803990B (en) * | 2021-09-24 | 2023-11-21 | 中信锦州金属股份有限公司 | Method for treating vanadium extraction rotary kiln flue gas by using burner |
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