CN215929522U - Corner tube type high-efficiency pulverized coal fired boiler with four corner tangent circles - Google Patents
Corner tube type high-efficiency pulverized coal fired boiler with four corner tangent circles Download PDFInfo
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- CN215929522U CN215929522U CN202121684419.5U CN202121684419U CN215929522U CN 215929522 U CN215929522 U CN 215929522U CN 202121684419 U CN202121684419 U CN 202121684419U CN 215929522 U CN215929522 U CN 215929522U
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Abstract
The utility model relates to a corner tube type high-efficiency pulverized coal boiler with tangent circles at four corners, which comprises a hearth, an ash falling hopper, a water-cooling hopper lower collection box, a water-cooling hopper, a burner, over-fire air, an explosion-proof door, an upper collection box, a steam collection box, a hearth steam collection box, a higher outlet collection box, a boiler barrel, a channel rear wall descending pipe, a rear descending pipe, a high-temperature superheater, a higher inlet collection box, a water spray desuperheater, a lower outlet collection box, a low-temperature superheater, a lower inlet collection box, a channel rear wall lower collection box, a high-temperature economizer, an external denitration device, a high-temperature air preheater, a low-temperature economizer, a low-temperature air preheater, a water supply collection box and a water-cooling hopper descending pipe, wherein the water-cooling hopper is arranged at the lower part of the hearth, the water-cooling hopper lower collection box is arranged at the lower part of the water-cooling hopper, the water-cooling hopper descending pipe is arranged on the surface, the steel consumption can be reduced and the processing efficiency can be improved while the boiler efficiency is ensured, the manufacturing and installation period of the product is greatly shortened, and cost reduction and efficiency improvement of enterprises are effectively guaranteed.
Description
Technical Field
The utility model relates to a pulverized coal boiler, in particular to an angle tube type efficient pulverized coal boiler with four tangential corners.
Background
The corner tube type steam boiler is a high-technology product introduced from Denmark through GEF project in China. The boiler that the combustor adopted four corners tangential circle formula to arrange in the existing market is suspension type structure, and this type of boiler structure is complicated, and the steel consumes comparatively heavily, and processing cycle and installation cycle are longer, can't adapt to the quick production of enterprise and fall the purpose that this carried the effect, influence enterprise's expected income.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the corner-tube type efficient pulverized coal fired boiler with the four tangential corners, which can reduce steel consumption and improve processing efficiency while ensuring boiler efficiency, greatly shortens the manufacturing and mounting period of products, and effectively ensures cost reduction and efficiency improvement of enterprises.
In order to achieve the purpose, the utility model relates to an angle tube type high-efficiency pulverized coal boiler with tangent circles at four corners, which comprises a hearth, an ash falling hopper, a water-cooling hopper lower collecting box, a water-cooling hopper, a burner, over-fire air, an explosion door, an upper collecting box, a steam collecting box, a hearth steam collecting box, a higher outlet collecting box, a boiler barrel, a channel rear wall descending pipe, a rear descending pipe, a high-temperature superheater, a higher inlet collecting box, a water spray desuperheater, a lower outlet collecting box, a low-temperature superheater, a lower inlet collecting box, a channel rear wall lower collecting box, a high-temperature coal economizer, an external denitration device, a high-temperature air preheater, a low-temperature coal economizer, a low-temperature air preheater, a water supply collecting box and a water-cooling hopper descending pipe, wherein the water-cooling hopper lower collecting box is arranged at the lower part of the water-cooling hopper, the water-cooling hopper descending pipe is connected with the water-cooling hopper lower collecting box through a pipeline, the lower part of a lower header of a water cooling bucket is fixedly connected with an ash dropping bucket, the lower part of a hearth is provided with more than two water supply headers, the side wall of the hearth is provided with four burners arranged in a circle cutting way for spraying fuel into the hearth, the middle section of the hearth is provided with over-fire air, a through hole arranged at the upper part of the hearth is provided with an explosion door for releasing pressure in the hearth in emergency, the upper part of the hearth is fixedly provided with an upper header and a steam collecting header, the top of the hearth is provided with a steam collecting header of the hearth, the steam collecting header of the hearth is connected with a boiler barrel through a pipeline, the boiler barrel is respectively connected with the upper header and the steam collecting header through a pipeline, the inside of the hearth is provided with a high-temperature superheater, the high-temperature superheater is connected with a low-temperature superheater, the low-temperature superheater is connected with a high-temperature economizer through a pipeline for preheating water entering a boiler so as to improve the combustion efficiency of coal, the high-temperature economizer is connected with a high-temperature air preheater through a pipeline, the through hole arranged on the surface of the pipeline between the high-temperature economizer and the high-temperature air preheater is provided with more than two external boilers for denitration, the high temperature air preheater passes through low temperature economizer and connects low temperature air preheater, low temperature air preheater connects gradually high temperature air preheater and furnace through the pipeline, high temperature air preheater and low temperature air preheater are sending into furnace after heating the air successively, further promote combustion efficiency, the high temperature over heater surface is equipped with and is higher than import collection case, the low temperature over heater surface is equipped with and crosses export collection case, it connects the water spray desuperheater respectively to be higher than import collection case and low export collection case, the low temperature over heater surface is equipped with and crosses import collection case, it passes passageway back wall connection passageway back wall lower header to cross import collection case, passageway back wall lower header passes through the tube coupling boiler section of thick bamboo.
The burner is provided with a coal injection nozzle, and pulverized coal is injected into the hearth to improve the combustion efficiency.
The low-temperature economizer is connected with the high-temperature economizer through a pipeline, the high-temperature economizer is respectively connected with the channel rear wall descending pipe and the rear descending pipe through pipelines, the channel rear wall descending pipe and the rear descending pipe are respectively connected with the water supply header through pipelines, the water supply header is connected with the furnace through pipelines, and the primarily heated water is uniformly fed into the furnace through the distribution of the plurality of water supply headers, so that the internal temperature of the furnace is ensured to be always kept within a replanned range.
The high-temperature air preheater is provided with two air inlets, so that the air heating effect is improved.
The low-temperature air preheater is provided with two air outlets, so that the air heating effect is improved.
The hearth is provided with a hearth front wall membrane wall, a hearth rear wall membrane wall, a left side membrane wall, a right side membrane wall and a convection heating surface tube bundle, and the membrane wall structure ensures tight sealing of the boiler and stable, safe and efficient combustion of fuel.
By the scheme, the utility model at least has the following advantages: compared with a conventional corner tube boiler, the boiler efficiency can be ensured, meanwhile, the steel consumption is reduced, the processing efficiency is improved, the product manufacturing and mounting period is greatly shortened, and the cost reduction and efficiency improvement of enterprises are effectively ensured.
Drawings
FIG. 1 is a structural diagram of an angle tube type high efficiency pulverized coal boiler with four tangential corners of the utility model;
in the figure: 1. hearth, 2, ash falling hopper, 3, water cooling hopper lower header, 4, water cooling hopper, 5, burner, 6, over fire air, 7, explosion door, 8, upper header, 9, steam collecting header, 10, hearth steam collecting header, 11, over outlet header, 12, boiler outlet header, 13, boiler barrel, 14, channel back wall downcomer, 15, back downcomer, 16, high temperature superheater, 17, over inlet header, 18, water spray desuperheater, 19, low over outlet header, 20, low temperature superheater, 21, low over inlet header, 22, channel back wall, 23, channel back wall lower header, 24, high temperature economizer, 25, denitration, 26, high temperature air preheater, 27, low temperature economizer, 28, low temperature air preheater, 29, water supply header, 30, water cooling hopper downcomer.
Detailed Description
The utility model will be further explained with reference to the drawings.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in figure 1, the corner tube type high-efficiency pulverized coal boiler with four tangential circles comprises a hearth 1, an ash falling bucket 2, a water-cooling bucket lower header 3, a water-cooling bucket 4, a burner 5, over-fire air 6, an explosion door 7, an upper header 8, a steam collecting header 9, a hearth steam collecting header 10, a higher outlet header 11, a boiler outlet header 12, a boiler barrel 13, a channel rear wall downcomer 14, a rear downcomer 15, a high-temperature superheater 16, a higher inlet header 17, a water spray desuperheater 18, a lower outlet header 19, a low-temperature superheater 20, a lower inlet header 21, a channel rear wall 22, a channel rear wall lower header 23, a high-temperature economizer 24, an external boiler 25, a high-temperature air preheater 26, a low-temperature economizer 27, a low-temperature air preheater 28, a water supply header 29 and a water-cooling bucket downcomer 30, wherein the water-cooling bucket 4 is arranged at the lower part of the hearth 1, the water-cooling bucket lower header 3 is arranged at the lower part of the water-cooling bucket 4, and the surface of the water-cooling bucket downcomer 30 is arranged on the water-cooling bucket 4, the water-cooling bucket downcomer 30 is connected with a water-cooling bucket lower header 3 through a pipeline, the lower part of the water-cooling bucket lower header 3 is fixedly connected with an ash falling bucket 2, the lower part of a hearth 1 is provided with more than two water supply headers 29, the side wall of the hearth 1 is provided with four burners 5 arranged in a circular cutting manner for spraying fuel into the hearth 1, the middle section of the hearth 1 is provided with over-fire air 6, the upper part of the hearth 1 is provided with a through hole for installing an explosion door 7 for releasing pressure in the hearth 1 in an emergency, the upper part of the hearth 1 is fixedly provided with an upper header 8 and a steam header 9, the top of the hearth 1 is provided with a through hole for installing a hearth steam header 10, the hearth steam header 10 is connected with a boiler barrel 13 through a pipeline, the boiler barrel 13 is respectively connected with the upper header 8 and the steam header 9 through a pipeline, the inside the hearth 1 is provided with a high-temperature superheater 16, the high-temperature superheater 16 is connected with a low-temperature superheater 20, the low-temperature superheater 20 is connected with a high-temperature economizer 24 through a pipeline, the high-temperature economizer 24 is connected with a high-temperature air preheater 26 through a pipeline, more than two external denitration devices 25 are arranged on the surface of the pipeline between the high-temperature economizer 24 and the high-temperature air preheater 26 through holes, the high-temperature air preheater 26 is connected with a low-temperature air preheater 28 through a low-temperature economizer 27, the low-temperature air preheater 28 is sequentially connected with the high-temperature air preheater 26 and the hearth 1 through pipelines, the high-temperature air preheater 26 and the low-temperature air preheater 28 successively heat air and then send the air into the hearth 1, the combustion efficiency is further improved, the surface of the high-temperature superheater 16 is provided with a higher inlet header 17, the surface of the low-temperature superheater 20 is provided with a lower outlet header 19, the higher inlet header 17 and the lower outlet header 19 are respectively connected with a water spray desuperheater 18, the surface of the low-temperature superheater 20 is provided with a lower inlet header 21, and the lower inlet header 21 penetrates through a rear wall 22 of the channel to be connected with a lower header 23, the channel rear wall lower header 23 is connected to the drum 13 through a pipeline.
The burner 5 is provided with a coal injection nozzle, and pulverized coal is injected into the hearth 1 to improve the combustion efficiency.
The low-temperature economizer 27 is connected with the high-temperature economizer 24 through a pipeline, the high-temperature economizer 24 is respectively connected with the channel rear wall descending pipe 14 and the rear descending pipe 15 through pipelines, the channel rear wall descending pipe 14 and the rear descending pipe 15 are respectively connected with the water supply header 29 through pipelines, the water supply header 29 is connected with the hearth 1 through a pipeline, the primarily heated water is uniformly fed into the hearth 1 through the distribution of the plurality of water supply headers 29, and the internal temperature of the hearth 1 is ensured to be always kept in a replanned range.
The high-temperature air preheater 26 is provided with two air inlets, so that the air heating effect is improved.
The low-temperature air preheater 28 is provided with two air outlets, so that the air heating effect is improved.
The hearth 1 is provided with a hearth front wall membrane wall, a hearth rear wall membrane wall, a left side membrane wall, a right side membrane wall and a convection heating surface tube bundle, and the membrane wall structure ensures tight sealing of the boiler and stable, safe and efficient combustion of fuel.
When the coal powder boiler is used, the corner tube type efficient coal powder boiler with four tangential corners is installed, and the equipment can start to operate after water and coal are added.
Has the advantages that: through the special furnace, diaphragm type wall structure and the pulverized coal burner that set up, can effectively promote boiler combustion efficiency, simultaneously through the combination of corner tube boiler and four corners tangential firing ware, can effectively reduce the steel and consume under the circumstances of guaranteeing combustion efficiency, shortened product manufacturing and installation cycle again greatly.
Claims (6)
1. A corner tube type efficient pulverized coal fired boiler with four tangential corners comprises a hearth (1), an ash falling hopper (2), a water cooling hopper lower header (3), a water cooling hopper (4), a burner (5), over-fire air (6), an explosion door (7), an upper header (8), a steam collection tank (9), a hearth steam collection tank (10), a high-pressure outlet header (11), a boiler outlet header (12), a boiler barrel (13), a channel rear wall downcomer (14), a rear downcomer (15), a high-temperature superheater (16), a high-pressure inlet header (17), a water spray desuperheater (18), a low-pressure outlet header (19), a low-temperature superheater (20), a low-pressure inlet header (21), a channel rear wall (22), a channel rear wall lower header (23), a high-temperature economizer (24), an external denitration furnace (25), a high-temperature air preheater (26), a low-temperature economizer (27), a low-temperature air preheater (28), A water supply header (29) and a water cooling bucket downcomer (30), and is characterized in that the lower part of a hearth (1) is provided with a water cooling bucket (4), the lower part of the water cooling bucket (4) is provided with a water cooling bucket lower header (3), the surface of the water cooling bucket (4) is provided with the water cooling bucket downcomer (30), the water cooling bucket downcomer (30) is connected with the water cooling bucket lower header (3) through a pipeline, the lower part of the water cooling bucket lower header (3) is fixedly connected with an ash falling bucket (2), the lower part of the hearth (1) is provided with more than two water supply headers (29), four burners (5) arranged in a circular cutting manner are arranged on the side wall of the hearth (1), the middle section of the hearth (1) is provided with over-fire air (6), the upper part of the hearth (1) is provided with a through hole for installing an explosion door (7), the upper part of the hearth (1) is fixedly installed with an upper header (8) and a steam collection header (9), and the top of the hearth (1) is provided with a through hole for installing a steam collection header (10), the hearth steam collection box (10) is connected with a boiler barrel (13) through a pipeline, the boiler barrel (13) is respectively connected with a steam collection box (8) and a steam collection box (9) through a pipeline, a high-temperature superheater (16) is arranged in the hearth (1), the high-temperature superheater (16) is connected with a low-temperature superheater (20), the low-temperature superheater (20) is connected with a high-temperature economizer (24) through a pipeline, the high-temperature economizer (24) is connected with a high-temperature air preheater (26) through a pipeline, more than two furnace external denitration devices (25) are arranged on the surface of the pipeline between the high-temperature economizer (24) and the high-temperature air preheater (26) through a through hole, the high-temperature air preheater (26) is connected with the low-temperature air preheater (28) through a low-temperature economizer (27), the low-temperature air preheater (28) is sequentially connected with the high-temperature air preheater (26) and the hearth (1) through pipelines, the surface of the high-temperature superheater (16) is provided with a higher inlet collection box (17), and the lower outlet steam collection box (19) is arranged on the surface of the low-temperature (20), the upper inlet header (17) and the lower outlet header (19) are respectively connected with a water spraying desuperheater (18), the surface of the low-temperature superheater (20) is provided with a lower inlet header (21), the lower inlet header (21) penetrates through a channel rear wall (22) to be connected with a channel rear wall lower header (23), and the channel rear wall lower header (23) is connected with a boiler barrel (13) through a pipeline.
2. The corner tube type high efficiency pulverized coal fired boiler of claim 1 characterized in that said burner (5) is equipped with a coal injection nozzle.
3. The corner-pipe type efficient pulverized coal fired boiler with the tangential circles at four corners of the claim 1 is characterized in that the low-temperature coal economizer (27) is connected with the high-temperature coal economizer (24) through a pipeline, the high-temperature coal economizer (24) is respectively connected with the channel rear wall descending pipe (14) and the rear descending pipe (15) through pipelines, the channel rear wall descending pipe (14) and the rear descending pipe (15) are respectively connected with the water supply header (29) through pipelines, and the water supply header (29) is connected with the furnace chamber (1) through a pipeline.
4. The corner-tube type high-efficiency pulverized coal fired boiler with the tangential circles at four corners as claimed in claim 1, characterized in that the high-temperature air preheater (26) is provided with two air inlets.
5. The corner-pipe type high-efficiency pulverized coal fired boiler with the tangential circles at four corners of the boiler as claimed in claim 1, wherein the low-temperature air preheater (28) is provided with two air outlets.
6. The corner-tube type high-efficiency pulverized coal fired boiler with the tangential circles at four corners of the boiler as claimed in claim 1, characterized in that the boiler (1) is provided with a boiler front wall membrane wall, a boiler rear wall membrane wall, a left side membrane wall, a right side membrane wall and a convection heating surface tube bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121684419.5U CN215929522U (en) | 2021-07-22 | 2021-07-22 | Corner tube type high-efficiency pulverized coal fired boiler with four corner tangent circles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121684419.5U CN215929522U (en) | 2021-07-22 | 2021-07-22 | Corner tube type high-efficiency pulverized coal fired boiler with four corner tangent circles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215929522U true CN215929522U (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121684419.5U Active CN215929522U (en) | 2021-07-22 | 2021-07-22 | Corner tube type high-efficiency pulverized coal fired boiler with four corner tangent circles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215929522U (en) |
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2021
- 2021-07-22 CN CN202121684419.5U patent/CN215929522U/en active Active
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Address after: 221000 China Resources Industrial Park, Huaihai International Port District, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Sifang Clean Energy Equipment Manufacturing Co.,Ltd. Address before: 221000 Tongshan Huarun Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province Patentee before: JIANGSU SIFANG BOILER Co.,Ltd. |