CN211345290U - Anti-coking structure and pulverized coal burner - Google Patents
Anti-coking structure and pulverized coal burner Download PDFInfo
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- CN211345290U CN211345290U CN201921739925.2U CN201921739925U CN211345290U CN 211345290 U CN211345290 U CN 211345290U CN 201921739925 U CN201921739925 U CN 201921739925U CN 211345290 U CN211345290 U CN 211345290U
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- furnace body
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- blowing
- pulverized coal
- annular air
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- 239000003245 coal Substances 0.000 title claims abstract description 66
- 238000004939 coking Methods 0.000 title claims abstract description 20
- 238000007664 blowing Methods 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000006698 induction Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The utility model discloses an anti-coking structure and pulverized coal burner, the induction cooker comprises a cooker bod, be provided with furnace in the furnace body, furnace's left side is sealed, and the right side is provided with out burner, its characterized in that: the left side of the furnace body is provided with a plurality of blowing pipelines along the circumferential direction, the left end of each blowing pipeline extends to the outside of the furnace body and is connected with a pressure gas supply device, the right end of each blowing pipeline is provided with a blowing opening, the blowing openings are communicated with the hearth and are arranged on the outer ring of the hearth, and each blowing pipeline is provided with a blowing pulse electromagnetic valve. The utility model discloses a set up the jetting structure, at the in-process of pulverized coal burner work, pressure gas feeding device jets with pulse airflow's mode to furnace's outer lane, blows off furnace with fused combustion products, avoids taking place the phenomenon of coking, great improvement pulverized coal burner's operating condition, improved the heat conversion rate of buggy, reduced the number of times of shutting down and maintaining, improved economic value.
Description
Technical Field
The utility model relates to a pulverized coal burner technical field especially relates to an anti-coking structure and pulverized coal burner.
Background
The pulverized coal burner is a device which can lead pulverized coal to be fully combusted in a short time and generate high-temperature vortex, the structure of the existing pulverized coal burner is shown in figures 1 to 3 and comprises a furnace body 1-1, a hearth 1-11, a bracket 1-2 and a base 1-3, a coal feeding pipe 1-4 is arranged in the middle of the left side of the furnace body 1-1, one end of the coal feeding pipe 1-4 extends to the outer side of the furnace body 1-1, the other end of the coal feeding pipe 1-4 extends to the inner side of the furnace body 1-1, a pulverized coal inlet pipe 1-5 is arranged at the bottom of one side of the coal feeding pipe 1-4 positioned outside, an ignition pipe 1-6 is arranged at the center of the coal feeding pipe 1-4, an ignition gun 1-8 is horizontally arranged in the ignition pipe 1-6 through a telescopic device 1-7, and an atomizing oil nozzle is arranged on the ignition gun 1-8, a plurality of first blades 1-9 are uniformly arranged between the right end of the coal feeding pipe 1-4 and the right end of the ignition pipe 1-6 along the circumferential direction, an annular air inlet cavity 1-10 and a first annular air outlet cavity 1-12 which are communicated with each other are respectively arranged at the middle part and the right side of the coal feeding pipe 1-4 in the furnace body 1-1 along the circumferential direction, a plurality of second blades 1-13 are uniformly arranged at the right end of the first annular air outlet cavity 1-12 along the circumferential direction, the first blades 1-9 and the second blades 1-13 form a certain angle with the axial line to ensure the generation of a rotational flow effect, a first high temperature resistant layer 1-14 and a second annular air outlet cavity 1-15 are arranged between the furnace 1-11 and the furnace body 1-1, a second high temperature resistant layer 1-16 is arranged between the annular air inlet cavity 1-10 and the first high temperature resistant layer 1-14, the support 1-2 is provided with an air blower 1-17, the air blower 1-17 is respectively communicated with the first annular air outlet cavity 1-12 and the second annular air outlet cavity 1-15 through a first air supply pipe 1-18 and a second air supply pipe 1-19, and the furnace body 1-1 can move on the base 1-3 under the drive of the traveling motor 1-20.
The working principle of the pulverized coal burner is as follows: the specific principle of ignition and the related unpublished structure can refer to the patent specification of the utility model with the publication number of CN205979756U named as 'high-efficiency ignition and combustion coal powder burner for asphalt mixing plant', the coal grinding and powder spraying machine enters coal powder from a coal powder inlet pipe 1-5, then the coal powder is sprayed out in a rotational flow mode under the action of a first blade 1-9 after passing through a coal feeding pipe 1-4, the coal powder is burnt after being ignited, the ignition gun 1-8 is pulled into an ignition pipe 1-6 by an air cylinder 1-7 after being ignited to avoid burning loss, meanwhile, under the action of an air blower 1-17, a part of air is sprayed out in a rotational flow mode under the action of a second blade 1-13 after sequentially passing through an annular air inlet cavity 1-10 and a first annular air outlet cavity 1-12, combustion-supporting air is provided for the combustion of the pulverized coal, the other part of air enters the second annular air outlet chambers 1-15, is discharged from the fire outlet on the right side after being preheated, and is combusted with the pulverized coal.
During the above-mentioned working process, the inner wall of the furnace (i.e. the first high temperature resistant layer) is prone to generate coking phenomenon, and the cause of coking is various, such as: 1. coal contains a large amount of iron sulfide; 2. the fineness of the coal powder is not uniform; 3. the air content is insufficient, in the prior art, in order to overcome the problem of coking, various methods are adopted, for example, an electric control system is arranged to adjust the air inflow in real time, the quality of pulverized coal is improved, and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to avoid prior art's weak point, provide an anti-coking structure and pulverized coal burner to effectively solve the weak point that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an anti-coking structure, includes the furnace body, be provided with furnace in the furnace body, furnace's left side is sealed, and the right side is provided with out the burner, furnace body's left side is provided with a plurality of jetting pipelines along circumference, and the left end of jetting pipeline extends to furnace body's outside and links to each other with pressure gas feeding device, and the right-hand member of jetting pipeline is provided with the jetting mouth, and the jetting mouth is linked together and sets up in furnace's outer lane with furnace, be provided with jetting pulse solenoid valve on the jetting pipeline.
Furthermore, six injection pipelines are uniformly arranged along the circumferential direction.
Further, the pressure gas supply device is a high-pressure gas bag.
A pulverized coal burner comprises the anti-coking structure.
Further, a coal feeding pipe is arranged in the middle of the left side of the furnace body, the left end of the coal feeding pipe extends to the outer side of the furnace body, the right end of the coal feeding pipe extends into the furnace chamber, an ignition pipe is arranged at the center of the coal feeding pipe, an ignition gun is horizontally arranged in the ignition pipe through a telescopic device, an atomized oil nozzle is arranged on the ignition gun, a plurality of first blades are uniformly arranged between the right end of the coal feeding pipe and the right end of the ignition pipe along the circumferential direction, an annular air inlet cavity and a first annular air outlet cavity which are communicated with each other are respectively arranged in the furnace body corresponding to the middle and the right side of the coal feeding pipe, a plurality of second blades are uniformly arranged at the right end of the first annular air outlet cavity along the circumferential direction, the first blades and the second blades form a certain angle with the axis, a first high temperature resistant layer and a second annular air outlet cavity are arranged between the furnace chamber and the furnace body, a second high temperature resistant layer is, the bottom of the furnace body is provided with a support, the support is provided with a blower, and the blower is respectively communicated with the first annular air outlet cavity and the second annular air outlet cavity through a first air supply pipe and a second air supply pipe;
and the blowing pipeline sequentially penetrates through the annular air inlet cavity and the second high-temperature-resistant layer.
Further, the angle between the first blade and the second blade and the axis is 45 degrees.
Further, the inclination angles of the first blade and the second blade are opposite.
Furthermore, a plurality of third blades are uniformly arranged at the fire outlet of the second annular air outlet cavity along the circumferential direction, and the third blades and the axis form a certain angle.
Further, the blower is communicated with the first air supply pipe and the second air supply pipe through a buffer distribution air tank.
The above technical scheme of the utility model following beneficial effect has: the utility model discloses a set up the jetting structure, at the in-process of pulverized coal burner work, pressure gas feeding device jets with pulse airflow's mode to furnace's outer lane, blows off furnace with fused combustion products, avoids taking place the phenomenon of coking, great improvement pulverized coal burner's operating condition, improved the heat conversion rate of buggy, reduced the number of times of shutting down and maintaining, improved economic value.
Drawings
FIG. 1 is a schematic diagram of a prior art pulverized coal burner;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a schematic structural diagram of an embodiment of the present invention;
fig. 5 is an axial sectional view of an embodiment of the present invention;
fig. 6 is a radial cross-sectional view of an embodiment of the present invention;
fig. 7 is a partial enlarged view of fig. 5 at B.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 4-7, the anti-coking structure according to the embodiment includes a furnace body 1, a furnace chamber 2 is arranged in the furnace body 1, the left side of the furnace chamber 2 is closed, a fire outlet 3 is arranged on the right side, a plurality of injection pipelines 4 are arranged on the left side of the furnace body 1 along the circumferential direction, the left end of each injection pipeline 4 extends to the outside of the furnace body 1 and is connected with a pressure gas supply device 5, an injection port 4a is arranged at the right end of each injection pipeline 4, the injection port 4a is communicated with the furnace chamber 2 and is arranged on the outer ring of the furnace chamber 2, and an injection pulse electromagnetic valve 6 is arranged on each injection.
In this embodiment, six blowing pipelines 4 are uniformly arranged along the circumferential direction, and of course, the number of blowing pipelines 4 can be adjusted according to the actual situation to adapt to the actual needs.
In the present embodiment, the pressure gas supply device 5 is a high-pressure air bag, and the input ends of all the blowing pipes 4 are connected to the high-pressure air bag.
The utility model discloses well anti-coking structure's theory of operation does: in the working process of the pulverized coal burner, the pressure gas supply device 5 blows the outer ring of the hearth in a pulse airflow mode, and blows out the molten combustion products out of the hearth, so that the coking phenomenon is avoided, and the working state of the pulverized coal burner is greatly improved.
A pulverized coal burner comprises the anti-coking structure.
The middle part of the left side of the furnace body 1 is provided with a coal feeding pipe 7, the left end of the coal feeding pipe 7 extends to the outer side of the furnace body 1, the right end of the coal feeding pipe 7 extends into the furnace 2, the center of the coal feeding pipe 7 is provided with an ignition pipe 8, an ignition gun 10 is horizontally arranged in the ignition pipe 8 through a telescopic device 9, the telescopic device 9 is a cylinder, is matched with the ignition gun 10, and is also provided with a gas storage tank, a fuel pipeline and other structures for auxiliary ignition, the gas outlet end of the gas storage tank is connected to the ignition gun through the fuel pipeline, diesel oil in the gas storage tank is conveyed to the ignition gun 41 by air pressure generated by an air compressor, the auxiliary ignition structure is the prior art, specific structures and principles can refer to the specification of the utility model with the publication number of "CN 205979756U", the structure is irrelevant to the improvement of the application, so that no description is given, a plurality of first blades 11 are uniformly arranged between the right end of the coal feeding pipe 7, an annular air inlet cavity 12 and a first annular air outlet cavity 13 which are communicated with each other are respectively arranged at the middle part and the right side of the coal feeding pipe 7 in the furnace body 1, a plurality of second blades 14 are uniformly arranged at the right end of the first annular air outlet cavity 13 along the circumferential direction, a certain angle is formed between each first blade 11 and each second blade 14 and the axis, a first high temperature resistant layer 15 and a second annular air outlet cavity 16 are arranged between the furnace chamber 2 and the furnace body 1, a second high temperature resistant layer 17 is arranged between the annular air inlet cavity 12 and the first high temperature resistant layer 15, a support 18 is arranged at the bottom of the furnace body 1, an air blower 19 is arranged on the support 18, and the air blower 19 is respectively communicated with the first annular air outlet cavity 13 and the second annular air outlet cavity 16 through a first air supply pipe 20 and a second air supply pipe 21;
the blowing pipeline 4 sequentially penetrates through the annular air inlet cavity 12 and the second high-temperature-resistant layer 17.
The first high temperature resistant layer 15 and the second high temperature resistant layer 17 are common high temperature resistant structures such as refractory brick layers, high temperature resistant castable layers and the like.
The angle between the first blade 11 and the second blade 14 and the axis is 45 °.
As shown in fig. 6, the inclination angles of the first vane 11 and the second vane 14 are opposite, so that the swirling direction of the pulverized coal sprayed out is opposite to the swirling direction of the air sprayed out, the pulverized coal is in full contact with the air, and the pulverized coal is fully combusted.
A plurality of third blades 22 are uniformly arranged at the fire outlet of the second annular air outlet cavity 16 along the circumferential direction, and the third blades 22 form a certain angle with the axis.
The blower 19 is communicated with the first air supply pipe 20 and the second air supply pipe 21 through the buffer distribution air tank 23, the blower 19 is driven by the variable frequency motor, the buffer distribution air tank 23 is of a hollow tank structure, and stability of air flow generated by the blower 19 can be improved by arranging the buffer distribution air tank 23.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (9)
1. The utility model provides an anti-coking structure, includes the furnace body, be provided with furnace in the furnace body, furnace's left side is sealed, and the right side is provided with fire outlet, its characterized in that: the left side of the furnace body is provided with a plurality of blowing pipelines along the circumferential direction, the left end of each blowing pipeline extends to the outside of the furnace body and is connected with a pressure gas supply device, the right end of each blowing pipeline is provided with a blowing opening, the blowing openings are communicated with the hearth and are arranged on the outer ring of the hearth, and each blowing pipeline is provided with a blowing pulse electromagnetic valve.
2. An anti-coking structure according to claim 1, in which: six injection pipelines are uniformly arranged along the circumferential direction.
3. An anti-coking structure according to claim 1, in which: the pressure gas supply device is a high-pressure gas bag.
4. A pulverized coal burner characterized by: comprising an anti-coking structure according to any one of claims 1 to 3.
5. The pulverized coal burner as set forth in claim 4, wherein: the middle part of the left side of the furnace body is provided with a coal feeding pipe, the left end of the coal feeding pipe extends to the outer side of the furnace body, the right end of the coal feeding pipe extends into the furnace chamber, the center of the coal feeding pipe is provided with an ignition pipe, the ignition pipe is internally provided with an ignition gun which can horizontally move through a telescopic device, the ignition gun is provided with an atomized oil nozzle, a plurality of first blades are uniformly arranged between the right end of the coal feeding pipe and the right end of the ignition pipe along the circumferential direction, the middle part and the right side of the furnace body corresponding to the coal feeding pipe are respectively provided with an annular air inlet cavity and a first annular air outlet cavity which are communicated, the right end of the first annular air outlet cavity is uniformly provided with a plurality of second blades along the circumferential direction, the first blades and the second blades form a certain angle with the axis, a first high temperature resistant layer and a second annular air outlet cavity are arranged between the furnace chamber and the furnace body, a second high temperature resistant layer is arranged between, the support is provided with a blower which is communicated with the first annular air outlet cavity and the second annular air outlet cavity through a first air supply pipe and a second air supply pipe respectively;
and the blowing pipeline sequentially penetrates through the annular air inlet cavity and the second high-temperature-resistant layer.
6. The pulverized coal burner as set forth in claim 5, wherein: the angle between the first blade and the second blade and the axis is 45 degrees.
7. The pulverized coal burner as set forth in claim 5, wherein: the inclination angles of the first blade and the second blade are opposite.
8. The pulverized coal burner as set forth in claim 5, wherein: and a plurality of third blades are uniformly arranged at the fire outlet of the second annular air outlet cavity along the circumferential direction, and the third blades and the axis form a certain angle.
9. The pulverized coal burner as set forth in claim 5, wherein: the blower is communicated with the first air supply pipe and the second air supply pipe through a buffer distribution air tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921739925.2U CN211345290U (en) | 2019-10-17 | 2019-10-17 | Anti-coking structure and pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921739925.2U CN211345290U (en) | 2019-10-17 | 2019-10-17 | Anti-coking structure and pulverized coal burner |
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| Publication Number | Publication Date |
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| CN211345290U true CN211345290U (en) | 2020-08-25 |
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| CN201921739925.2U Active CN211345290U (en) | 2019-10-17 | 2019-10-17 | Anti-coking structure and pulverized coal burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118757795A (en) * | 2024-09-06 | 2024-10-11 | 苏能(锡林郭勒)发电有限公司 | A mixing system for decoking and combustion-supporting additives for lignite units |
-
2019
- 2019-10-17 CN CN201921739925.2U patent/CN211345290U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118757795A (en) * | 2024-09-06 | 2024-10-11 | 苏能(锡林郭勒)发电有限公司 | A mixing system for decoking and combustion-supporting additives for lignite units |
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