CN212440494U - Boiler desulfurization circulation system - Google Patents
Boiler desulfurization circulation system Download PDFInfo
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- CN212440494U CN212440494U CN202020658653.XU CN202020658653U CN212440494U CN 212440494 U CN212440494 U CN 212440494U CN 202020658653 U CN202020658653 U CN 202020658653U CN 212440494 U CN212440494 U CN 212440494U
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Abstract
The utility model aims at providing a boiler desulfurization circulating system, which comprises a boiler, a slag cooler connected with the boiler, an activation device, a tail flue and a dust remover, wherein the slag cooler is arranged below the boiler; the boiler comprises a flue gas outlet; a first filter screen and a second filter screen are respectively arranged in the boiler from top to bottom, the aperture of the first filter screen is smaller than that of the second filter screen, and a flue gas outlet of the boiler is positioned above the first filter screen; a circulating outlet is formed in the inner wall of the boiler between the first filter screen and the second filter screen, a connecting pipeline is arranged on the boiler and is a three-way pipe, and three ports of the connecting pipeline are respectively communicated with the bottom in the boiler, the circulating outlet and the slag cooler; an electromagnetic valve is arranged at a port communicated with the slag cooler in the connecting pipeline; a third filter screen is arranged at a port connected with the bottom of the boiler in the connecting pipeline; the utility model discloses with the setting of solid gas separation device in the boiler, reduce the holistic occupation space of system.
Description
Technical Field
The utility model relates to a boiler smoke and dust handles technical field, in particular to boiler desulfurization circulation system.
Background
In recent years, the circulating fluidized bed boiler has gained more and more attention due to the characteristics of wide fuel adaptability, strong load regulation capability, excellent environmental protection performance and the like. Under the dual pressure of energy and environment in China, the circulating fluidized bed boiler is also well popularized.
The Chinese patent document with the publication number of CN208504372U in the prior art discloses a circulating fluidized bed boiler bottom ash desulfurization system, which comprises a circulating fluidized bed boiler, a slag cooler, an activation device, a separator, a tail flue and a dust remover; the slag cooler is arranged at the bottom of the circulating fluidized bed boiler, the circulating fluidized bed boiler is also provided with a feeding device, and the separator, the tail flue and the dust remover are sequentially connected with a flue gas outlet of the circulating fluidized bed boiler; the crushing and screening device is connected between the slag cooler and the activation device, and the activation device is connected with the dust remover; the slag cooler is used for cooling bottom ash discharged from the bottom of the circulating fluidized bed boiler; the crushing and screening device is used for screening the bottom ash cooled by the slag cooler into coarse ash and fine ash or crushing the coarse ash into fine ash and sending the fine ash to the activation device.
The above prior art solutions have the following drawbacks: the separator in the system is positioned between the circulating fluidized bed boiler and the tail flue and is mainly used for carrying out solid-gas separation on high-temperature flue gas in the circulating fluidized bed boiler, and the separator needs to occupy a small space in the system, so that the occupied area of the whole system is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a boiler desulfurization circulating system, which is characterized in that a solid-gas separation device is arranged in a boiler to reduce the overall occupied space of the system.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a boiler desulfurization circulating system comprises a boiler, a slag cooler connected with the boiler, an activation device, a tail flue and a dust remover, wherein the slag cooler is arranged below the boiler; the boiler comprises a flue gas outlet, and the tail flue and the dust remover are sequentially connected to the flue gas outlet of the boiler; a first filter screen and a second filter screen are respectively arranged in the boiler from top to bottom, the aperture of the first filter screen is smaller than that of the second filter screen, and a flue gas outlet of the boiler is positioned above the first filter screen; a circulating outlet is formed in the inner wall of the boiler between the first filter screen and the second filter screen, a connecting pipeline is arranged on the boiler and is a three-way pipe, and three ports of the connecting pipeline are respectively communicated with the bottom in the boiler, the circulating outlet and the slag cooler; an electromagnetic valve is arranged at a port communicated with the slag cooler in the connecting pipeline; and a third filter screen is arranged at a port connected with the bottom of the boiler in the connecting pipeline.
By adopting the technical scheme, the flue gas and some solid dust generated after the fuel in the boiler is combusted gradually rise in the boiler; the second filter screen blocks solid dust with larger volume below the smoke outlet, the first filter screen blocks solid dust with relatively smaller volume below the smoke outlet, and the first filter screen and the second filter screen can prevent the solid dust with larger volume from directly blocking meshes of the first filter screen under the synergistic effect; most of flue gas combusted in the boiler passes through the first filter screen and then enters the tail flue and the dust remover through the flue gas outlet at one time, a small part of flue gas and solid dust separated by the first filter screen enter the connecting pipeline through the circulating outlet, the flue gas enters the bottom of the boiler again through the third filter screen, the solid dust is filtered by the third filter screen and stays in the connecting pipeline, and the solid dust directly enters the slag cooler after the electromagnetic valve is opened; the connecting pipeline is used for absorbing the solid dust filtered by the first filter screen, so that the solid dust is prevented from being accumulated on the second filter screen to cause blockage, and the third filter screen is matched with the electromagnetic valve to directly enter the slag cooler, so that the solid dust is prevented from being repeatedly combusted; the utility model discloses in integrating the boiler with solid-gas separator, effectively practiced thrift the holistic occupation space of equipment.
The utility model discloses further set up to: still be provided with the fan on the boiler, the air outlet of fan enters into the boiler between first filter screen and second filter screen, the air outlet of fan is towards the circulation export.
Through adopting above-mentioned technical scheme, the fan is used for increasing the oxygen content in the boiler, can blow in the connecting tube with flue gas and solid dust between first filter screen and the second filter screen simultaneously, reduces the solid dust content between first filter screen and the second filter screen, increases the oxygen supply volume of boiler bottom.
The utility model discloses further set up to: the boiler top is provided with driving motor, be provided with the pivot that enters into in the boiler on driving motor's the output shaft, all be provided with the cleaning member in first filter screen and second filter screen below in the pivot, the cleaning member includes the brush hair, the lower terminal surface of first filter screen and second filter screen respectively with adjacent brush hair butt on the cleaning member.
Through adopting above-mentioned technical scheme, driving motor drive pivot rotates and drives the cleaning member rotatory, cleans the lower terminal surface of first filter screen and second filter screen after the cleaning member is rotatory, sweeps the adnexed solid dust above.
The utility model discloses further set up to: the cleaning piece is provided with a connecting hole for the rotating shaft to pass through, and the rotating shaft is fixedly connected with the cleaning piece through a connecting bolt after passing through the connecting hole.
Through adopting above-mentioned technical scheme, can dismantle connected mode and be convenient for dismouting cleaning member.
The utility model discloses further set up to: first boss and second boss are provided with respectively in first filter screen and second filter screen below on the boiler inner wall, first filter screen sets up on first boss, the second filter screen sets up on the second boss.
Through adopting above-mentioned technical scheme, be convenient for place first filter screen and second filter screen, provide the support for first filter screen and second filter screen.
The utility model discloses further set up to: the first boss and the second boss are both annular, and the inner diameter of the first boss is larger than that of the second boss; the diameter of first filter screen is greater than the second filter screen, and the diameter of second filter screen is less than the internal diameter of first boss.
By adopting the technical scheme, the filter screens are convenient to be sequentially arranged at corresponding positions in the boiler.
The utility model discloses further set up to: and a condenser is arranged at one side of the top of the boiler, which is positioned at the driving motor.
Through adopting above-mentioned technical scheme, the condenser is the driving motor cooling.
The utility model discloses further set up to: a protective cover is arranged at the joint of the rotating shaft and the boiler in the boiler.
Through adopting above-mentioned technical scheme, seal the junction of pivot and boiler and handle, avoid flue gas and solid dust to enter into in the junction of pivot and boiler.
To sum up, the beneficial effects of the utility model are that:
1. smoke generated after fuel in the boiler is combusted and some solid dust gradually rise in the boiler; the second filter screen blocks solid dust with larger volume below the smoke outlet, the first filter screen blocks solid dust with relatively smaller volume below the smoke outlet, and the first filter screen and the second filter screen can prevent the solid dust with larger volume from directly blocking meshes of the first filter screen under the synergistic effect; most of flue gas combusted in the boiler passes through the first filter screen and then enters the tail flue and the dust remover through the flue gas outlet at one time, a small part of flue gas and solid dust separated by the first filter screen enter the connecting pipeline through the circulating outlet, the flue gas enters the bottom of the boiler again through the third filter screen, the solid dust is filtered by the third filter screen and stays in the connecting pipeline, and the solid dust directly enters the slag cooler after the electromagnetic valve is opened; the connecting pipeline is used for absorbing the solid dust filtered by the first filter screen, so that the solid dust is prevented from being accumulated on the second filter screen to cause blockage, and the third filter screen is matched with the electromagnetic valve to directly enter the slag cooler, so that the solid dust is prevented from being repeatedly combusted; the utility model integrates the solid-gas separator into the boiler, thereby effectively saving the overall occupied space of the device;
2. the fan is used for increasing the oxygen content in the boiler, can blow in the connecting tube with flue gas and solid dust between first filter screen and the second filter screen simultaneously, reduces the solid dust content between first filter screen and the second filter screen, increases the oxygen feed volume of boiler bottom.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the cleaning member of the present invention.
Reference numerals: 1. a boiler; 101. a slag cooler; 102. a crushing and screening device; 103. an activation device; 104. a tail flue; 105. a dust remover; 11. a flue gas outlet; 12. a first boss; 13. a second boss; 14. a first filter screen; 16. a second filter screen; 17. a recycle outlet; 2. a fan; 3. connecting a pipeline; 31. a third filter screen; 32. an electromagnetic valve; 41. a drive motor; 42. a rotating shaft; 43. a condenser; 44. a cleaning member; 441. connecting holes; 442. a connecting bolt; 444. a protective cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment discloses a boiler desulfurization circulating system, which comprises a boiler 1, a slag cooler 101 connected with the boiler 1, a crushing and screening device 102, an activating device 103, a tail flue 104 and a dust remover 105, wherein the slag cooler 101 is installed below the boiler 1, and the crushing and screening device 102 is connected between the slag cooler 101 and the activating device 103, as shown in fig. 1. The activation device 103 is connected to a dust separator 105. The boiler 1 comprises a flue gas outlet 11, a tail flue 104 and a dust remover 105 which are sequentially connected with the flue gas outlet 11 of the boiler 1; and a heat exchanger is arranged in the tail flue 104 and comprises a superheater, an economizer, an air preheater and the like. After the fuel is combusted in the boiler 1, high-temperature flue gas generated by combustion is subjected to gas-solid separation in the boiler 1, the separated solid particles return to the boiler 1, the separated flue gas enters the tail flue 104, is subjected to heat exchange with a heat exchanger in the tail flue 104, is subjected to temperature reduction, and then enters the dust remover 105 for dust removal; bottom ash generated after combustion in the boiler 1, including solid dust, is discharged from the bottom and cooled in the slag cooler 101.
As shown in fig. 1, a first filter screen 14 and a second filter screen 16 are detachably connected to the interior of the boiler 1 from top to bottom, respectively, and a flue gas outlet 11 of the boiler 1 is located above the first filter screen 14; the aperture of the first filter screen 14 is smaller than that of the second filter screen 16, and the first filter screen 14 and the second filter screen 16 divide the inside of the filter into an upper part, a middle part and a lower part. A first boss 12 and a second boss 13 which are annular are fixedly connected to the inner wall of the boiler 1 below a first filter screen 14 and a second filter screen 16 respectively, the first filter screen 14 is installed on the first boss 12, the second filter screen 16 is installed on the second boss 13, the first boss 12 and the second boss 13 are both annular, and the inner diameter of the first boss 12 is larger than that of the second boss 13; the diameter of first filter screen 14 is greater than second filter screen 16, and the diameter of second filter screen 16 is less than the internal diameter of first boss 12, is convenient for first filter screen 14 and second filter screen 16 once to install on the corresponding position in boiler 1. The second filter screen 16 blocks the solid dust with a large volume below the smoke outlet 11, the first filter screen 14 blocks the solid dust with a relatively small volume below the smoke outlet 11, and the first filter screen 14 and the second filter screen 16 cooperate to prevent the solid dust with a large volume from directly blocking meshes of the first filter screen 14.
As shown in fig. 1, a circulation outlet 17 is formed in the inner wall of the boiler 1 between the first filter screen 14 and the second filter screen 16, the boiler 1 is further fixedly connected with a fan 2, an air outlet of the fan 2 enters the boiler 1 between the first filter screen 14 and the second filter screen 16, and an air outlet of the fan 2 faces the circulation outlet 17. The boiler 1 is fixedly connected with a connecting pipeline 3, the connecting pipeline 3 is a three-way pipe, and three ports of the connecting pipeline 3 are respectively communicated with the bottom in the boiler 1, a circulating outlet 17 and a slag cooler 101; an electromagnetic valve 32 is arranged at the port communicated with the slag cooler 101 in the connecting pipeline 3; a third filter screen 31 is fixedly connected to a port of the connecting pipeline 3 connected with the bottom of the boiler 1. The fan 2 is used for increasing the oxygen content in the boiler 1 and blowing the flue gas and the solid dust between the first filter screen 14 and the second filter screen 16 into the connecting pipeline 3; fresh air and flue gas flow back to the bottom of the boiler 1, and solid dust enters the slag cooler 101 through the electromagnetic valve 32, so that the content of the solid dust between the first filter screen 14 and the second filter screen 16 can be reduced, and the oxygen supply amount at the bottom of the boiler 1 can be increased.
As shown in fig. 1 and 2, a driving motor 41 is fixedly connected to the top of the boiler 1, a rotating shaft 42 entering the boiler 1 is fixedly connected to an output shaft of the driving motor 41, and a condenser 43 for cooling the driving motor 41 is also fixedly connected to one side of the driving motor 41 on the top of the boiler 1. The rotating shaft 42 is detachably connected with a cleaning piece 44 below the first filter screen 14 and the second filter screen 16, a connecting hole 441 is formed in the cleaning piece 44 for the rotating shaft 42 to pass through, and the rotating shaft 42 passes through the connecting hole 441 and then is fixedly connected with the cleaning piece 44 through a connecting bolt 442. Cleaning elements 44 comprise bristles, and the lower end faces of first screen 14 and second screen 16 abut the bristles on adjacent cleaning elements 44, respectively. A protective cover 444 is fixedly connected to the joint of the rotating shaft 42 and the boiler 1 in the boiler 1, and a communicating hole for the rotating shaft 42 to pass through is formed in the protective cover 444; the joint is covered by a protective cover 444 to prevent the flue gas and solid dust in the boiler 1 from entering.
The utility model discloses a concrete operation flow is so following:
smoke generated after fuel in the boiler 1 is combusted and a certain amount of solid dust gradually rise in the boiler 1; the second filter screen 16 blocks solid dust with larger volume below the smoke outlet 11, the first filter screen 14 blocks solid dust with relatively smaller volume below the smoke outlet 11, and the first filter screen 14 and the second filter screen 16 cooperate to prevent the solid dust with larger volume from directly blocking meshes of the first filter screen 14; most of flue gas combusted in the boiler 1 passes through the first filter screen 14 and then enters the tail flue 104 and the dust remover 105 through the flue gas outlet 11, a small part of flue gas and solid dust sieved out by the first filter screen 14 enter the connecting pipeline 3 through the circulating outlet 17, the flue gas reenters the bottom of the boiler 1 through the third filter screen 31, the solid dust is filtered by the third filter screen 31 and stays in the connecting pipeline 3, and the solid dust and furnace dust at the bottom of the boiler 1 enter the slag cooler 101 together for cooling after the electromagnetic valve 32 is opened.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A boiler desulfurization circulating system comprises a boiler (1), a slag cooler (101) connected with the boiler (1), an activating device (103), a tail flue (104) and a dust remover (105), wherein the slag cooler (101) is arranged below the boiler (1); the boiler (1) comprises a flue gas outlet (11), and the tail flue (104) and the dust remover (105) are sequentially connected with the flue gas outlet (11) of the boiler (1); the method is characterized in that: a first filter screen (14) and a second filter screen (16) are respectively arranged in the boiler (1) from top to bottom, the aperture of the first filter screen (14) is smaller than that of the second filter screen (16), and a flue gas outlet (11) of the boiler (1) is positioned above the first filter screen (14); a circulating outlet (17) is formed in the inner wall of the boiler (1) between the first filter screen (14) and the second filter screen (16), a connecting pipeline (3) is arranged on the boiler (1), the connecting pipeline (3) is a three-way pipe, and three ports of the connecting pipeline (3) are respectively communicated with the bottom in the boiler (1), the circulating outlet (17) and the slag cooler (101); an electromagnetic valve (32) is arranged at a port in the connecting pipeline (3) communicated with the slag cooler (101); a third filter screen (31) is arranged at a port connected with the bottom of the boiler (1) in the connecting pipeline (3).
2. The boiler desulfurization cycle system according to claim 1, characterized in that: still be provided with fan (2) on boiler (1), the air outlet of fan (2) enters into boiler (1) between first filter screen (14) and second filter screen (16), the air outlet of fan (2) is towards circulation export (17).
3. The boiler desulfurization cycle system according to claim 1, characterized in that: boiler (1) top is provided with driving motor (41), be provided with pivot (42) that enter into in boiler (1) on the output shaft of driving motor (41), all be provided with cleaning member (44) in first filter screen (14) and second filter screen (16) below in pivot (42), cleaning member (44) include the brush hair, the lower terminal surface of first filter screen (14) and second filter screen (16) respectively with adjacent brush hair butt on cleaning member (44).
4. The boiler desulfurization cycle system according to claim 3, characterized in that: the cleaning piece (44) is provided with a connecting hole (441) for the rotating shaft (42) to pass through, and the rotating shaft (42) is fixedly connected with the cleaning piece (44) through a connecting bolt (442) after passing through the connecting hole (441).
5. The boiler desulfurization cycle system according to claim 1, characterized in that: boiler (1) inner wall is provided with first boss (12) and second boss (13) respectively in first filter screen (14) and second filter screen (16) below, first filter screen (14) set up on first boss (12), second filter screen (16) set up on second boss (13).
6. The boiler desulfurization cycle system according to claim 5, characterized in that: the first boss (12) and the second boss (13) are both annular, and the inner diameter of the first boss (12) is larger than that of the second boss (13); the diameter of the first filter screen (14) is larger than that of the second filter screen (16), and the diameter of the second filter screen (16) is smaller than the inner diameter of the first boss (12).
7. The boiler desulfurization cycle system according to claim 1, characterized in that: a condenser (43) is arranged at one side of the top of the boiler (1) and is positioned at the driving motor (41).
8. The boiler desulfurization cycle system according to claim 1, characterized in that: and a protective cover (444) is arranged at the joint of the rotating shaft (42) and the boiler (1) in the boiler (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020658653.XU CN212440494U (en) | 2020-04-26 | 2020-04-26 | Boiler desulfurization circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020658653.XU CN212440494U (en) | 2020-04-26 | 2020-04-26 | Boiler desulfurization circulation system |
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| Publication Number | Publication Date |
|---|---|
| CN212440494U true CN212440494U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020658653.XU Active CN212440494U (en) | 2020-04-26 | 2020-04-26 | Boiler desulfurization circulation system |
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|---|---|
| CN (1) | CN212440494U (en) |
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2020
- 2020-04-26 CN CN202020658653.XU patent/CN212440494U/en active Active
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