CN210786644U

CN210786644U - Boiler spraying dust-settling device

Info

Publication number: CN210786644U
Application number: CN201921120726.3U
Authority: CN
Inventors: 李祥
Original assignee: Zhuzhou Jiuding Feed Co ltd
Current assignee: Zhuzhou Jiuding Feed Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-06-19
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a boiler spray dust-settling device, which comprises a boiler, a combustion chamber arranged in the boiler and an exhaust passage for exhausting flue gas in the combustion chamber, wherein the exhaust passage is provided with an exhaust treatment box, the exhaust treatment box comprises a box body and a box wall, and the box wall comprises an upper box wall and a lower box wall; a water supply pipe provided outside the exhaust gas treatment tank; the spraying plate is arranged on the inner side of the exhaust treatment box, one end of the spraying plate is fixedly connected with the upper box wall, the other end of the spraying plate extends into the box body and is provided with a fixedly connected spraying pipe, and the spraying pipe is communicated with a water supply pipe; the partition plate is arranged on the inner side of the exhaust treatment box, is fixedly connected with the lower box wall and is arranged opposite to the spray plate at intervals; the ratio of the height of the spraying plate and the partition plate to the height of the box body is 1/10-1/2, and the height of the spraying plate is larger than that of the partition plate. The utility model discloses large granule material such as smoke and dust in the flue gas that can detach the boiler production do benefit to the environmental protection, simple structure, the cost is lower.

Description

Boiler spraying dust-settling device

Technical Field

The utility model relates to a flue gas field of handling, in particular to boiler spraying dust device.

Background

In some plants, such as swine feed plants, a boiler is required to provide steam, and the source of heat for the boiler is typically by burning coal or wood, etc. in a combustion chamber of the boiler, thereby creating a significant amount of flue gas pollution. In the prior art, a plurality of production plants directly discharge boiler flue gas into the atmosphere, and the smoke dust and the like in the flue gas cause atmospheric pollution because the smoke dust and the like are not treated; dust removal is also performed by using special dust removers, even complex water film dust removal equipment, but the cost is high, and some small production plants rarely purchase the dust removers specially.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a boiler spraying dust device, it has solved at least part of boiler burning flue gas and has not done the processing and bring the atmosphere pollution problem, has the effect of environmental protection, and simple structure, and the cost is lower.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a boiler spray dust-settling device comprises a boiler, a combustion chamber arranged in the boiler and an exhaust passage for exhausting flue gas in the combustion chamber, and is characterized in that an exhaust treatment box is arranged on the exhaust passage and comprises a box body and box walls, and the box walls comprise an upper box wall and a lower box wall; the exhaust treatment tank further includes:

a water supply pipe provided outside the exhaust treatment tank;

the spraying plate is arranged on the inner side of the exhaust treatment box, one end of the spraying plate is fixedly connected to the upper box wall, the other end of the spraying plate extends into the box body and is fixedly connected with a spraying pipe, and the spraying pipe is communicated with the water supply pipe so that liquid in the water supply pipe is sprayed into the box body through the spraying pipe;

the partition plate is arranged on the inner side of the exhaust treatment box, is fixedly connected with the lower box wall and is arranged opposite to the spray plate at intervals;

the ratio of the height of the spraying plate and the partition plate to the height of the box body is 1/10-1/2, and the height of the spraying plate is larger than that of the partition plate.

Adopt above-mentioned structure, flue gas in the boiler combustion chamber enters into exhaust treatment box through exhaust passage in, therefore the setting of baffle and spraying board forms "it" font passageway in exhaust treatment box, and when the flue gas passes through these passageways, owing to the spray pipe that sets up on the spraying board, play spun liquid and cool down the dust removal to the flue gas, the smoke and dust in the gas through exhaust treatment box is detached, has reduced the atmosphere pollution, accords with the environmental protection requirement more.

The method is further optimized as follows: and one side of the spraying pipe, which is far away from the spraying plate, is provided with a spraying seam so that the liquid in the spraying pipe can flow to the lower box wall under the action of gravity.

The method is further optimized as follows: the width of the gap in the middle of the spray seam is larger than the width of the gaps at the two ends of the spray seam.

The method is further optimized as follows: and one side of the spray pipe, which is far away from the spray plate, is provided with a plurality of spray holes, so that the liquid in the spray pipe can flow to the lower box wall under the action of gravity.

The method is further optimized as follows: the plurality of spray holes are arranged at intervals and connected into one or two straight lines.

The method is further optimized as follows: the bottom of the partition board, which is close to one end of the lower box wall, is provided with a partition board channel, the exhaust treatment box is also provided with a water outlet, and the height of the water outlet is lower than that of the partition board channel.

The method is further optimized as follows: the exhaust treatment box is provided with an air inlet and an air outlet which are communicated with the exhaust channel, and one side of the partition board and/or the spraying board facing the air inlet is provided with a felt for adsorbing smoke dust in the smoke.

The method is further optimized as follows: the box is detachable structure, the spray pipe with the spraying board is for dismantling the connection.

To sum up, the utility model discloses following beneficial effect has: the flue gas with boiler combustion chamber in enters into the exhaust treatment incasement through exhaust passage, the setting of spraying board and baffle is with the exhaust treatment incasement form "it" font passageway, the flue gas enters into the exhaust treatment case from the air inlet, can only pass the fog curtain passageway that the spray tube blowout liquid formed, in addition the setting of felt on the baffle, large granular material such as smoke and dust in the flue gas can more effectually be detached, accomplish the purification treatment to the flue gas, reduce the flue gas to atmospheric pollution, do benefit to the environmental protection.

Drawings

FIG. 1 is a schematic structural diagram of a boiler spray dust-settling device;

FIG. 2 is a perspective view of a portion of the exhaust treatment housing of the boiler spray dust collector of FIG. 1;

FIG. 3 is an enlarged perspective view of the spray pipe structure in the exhaust treatment box of the boiler spray dust removal device of FIG. 1;

FIG. 4 is an enlarged perspective view of an alternate construction of the spray tubes in the exhaust treatment housing of the boiler spray dust removal device of FIG. 1;

FIG. 5 is a schematic view of a baffle plate structure in an exhaust treatment box of the boiler spray dust collector of FIG. 1;

in the figure, 100, a boiler spray dust-settling device; 10. an exhaust treatment tank; 11. a box wall; 111. an upper tank wall; 112. a lower box wall; 12. a box body; 13. a spray plate; 14. a partition plate; 141. felt; 142. a separator channel; 15. a spray tube; 151. spraying seams; 152. spraying a hole; 16. a water supply pipe; 17. a water outlet; 20. a boiler; 21. a combustion chamber; 30. an exhaust passage; 31. an air inlet; 32. and an air outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In an embodiment of the present invention, referring to fig. 1 to 5, a boiler spray dust settling device 100 is provided, which includes a boiler 20, wherein the top of the boiler 20 has a heating cavity (not shown), for example, the boiler can be used to heat water to generate steam, and then the steam is used as a heat source to be provided to a pig feed production facility, and the bottom of the boiler 20 is a combustion cavity 21, for example, the boiler can be used to burn coal or wood, so as to heat the heating cavity. The combustion chamber 21 is communicated with an exhaust passage 30, the exhaust passage 30 comprises an air inlet 31 and an air outlet 32, and the flue gas generated by combustion is discharged into the exhaust treatment box 10 through the air inlet 31 and then discharged from the air outlet 32. The exhaust gas treatment box 10 comprises a box body 12 and a box wall 11, wherein the box wall 11 comprises an upper box wall 111 and a lower box wall 112 which together form a space for smoke treatment. The exhaust gas treatment box 10 is further provided with a spraying plate 13 and a partition plate 14, one end of the spraying plate 13 is fixed on the upper box wall 111, the other end of the spraying plate 13 extends into the box body 12, one end of the partition plate 14 is fixed on the lower box wall 112, the other end of the partition plate also extends into the box body 12, and the spraying plate and the partition plate are arranged at intervals to divide the interior of the exhaust gas treatment box 10 into a zigzag channel. Further, a spray pipe 15 is provided at one end of the spray plate 13 extending into the housing 12, and a water supply pipe 16 is provided outside the exhaust gas treatment housing, as shown in fig. 2. The spray tube 15 is in communication with the water supply line 16 such that the spray tube 15 sprays liquid from the water supply line 16 into the tank 12 and the liquid is sprayed through the spray tube 15 towards the lower tank wall to form a spray. Therefore, the flue gas entering from the air inlet 31 moves in the exhaust treatment box 10 according to the zigzag channel, and the flue gas needs to pass through the spray sprayed by the spray pipe 15, so that the spray can intercept large particulate matters such as smoke dust in the flue gas, and the dust falling effect is achieved.

Preferably, the ratio of the height of the spraying plate 13 and the partition plate 14 to the height of the box body 12 is 1/10-1/2, when the ratio is lower than 1/10, the flue gas entering the exhaust treatment box 10 cannot easily pass through the zigzag channel, and because the flue gas has high temperature, once the flue gas cannot be timely exhausted, the potential safety hazard exists; when the height is greater than 1/2, it may not be possible to form a zigzag channel, even if the height of one of the spraying plate 13 or the partition plate 14 is greater than 1/2 and the height of the other is less than 1/2 to form a zigzag channel, it is not favorable for the flue gas to form a plurality of curved moving paths and for the flue gas to pass through the spray at a proper speed for dust removal. It is further preferred that there are 4 spray plates 13 and partitions 14, as shown in fig. 1, to meet the requirement of spray dust removal, and not to cause the exhaust treatment box 10 to be too bulky. Further optionally, the height of the spraying plate 13 is greater than that of the partition plate 14, that is, the distance between the spraying plate 13 and the lower box wall 112 is smaller than that between the partition plate 14 and the upper box wall 112, so that the flue gas is not easy to pass through the lower side of the spraying plate 13, and the flue gas passes through slowly, so that the spray sprayed by the spraying pipe 15 can remove large particulate matters such as smoke dust in the flue gas more intensively, and a dust removal effect is achieved.

Optionally, there may be many structures that the spraying pipe 15 can spray liquid, in an embodiment of the present invention, a spraying slot is opened on one side of the spraying pipe 15 away from the spraying plate 13, as shown in fig. 3, so that the liquid in the spraying pipe 13 can flow to the lower box wall 112 under the action of gravity, the width of the slot is small, so that the sprayed liquid forms a mist curtain, and the smoke passes through the mist curtain to achieve the dust removing purpose. Further preferably, the width of the middle gap of the spraying seam is larger than the width of the gaps at two ends, and the middle width of the spraying seam is wider than the width of the two sides of the spraying seam, so that the formed fog curtain is thicker, and large particle substances such as smoke dust in the smoke can be removed more fully. In another embodiment of the present invention, the spraying pipe 15 is designed to have a plurality of spraying holes on one side away from the spraying plate 13, as shown in fig. 4, so that the liquid in the spraying pipe 13 can flow to the lower box wall 112 under the action of gravity, the width of the gap is smaller, so that the sprayed liquid forms a mist curtain, and the smoke passes through the mist curtain to achieve the dust removing purpose. Further preferably, the plurality of nozzle holes are arranged at intervals and connected to form a straight line, but of course, the plurality of nozzle holes may be arranged in two lines, which is not limited herein. Therefore, the smoke can pass through the fog curtain, and the effect of more complete dust removal is achieved.

In the embodiment provided by the present invention, the bottom of the partition 14, i.e. the end connected to the lower case wall 112, is provided with a partition passage 142 for passing the liquid, the exhaust treatment case 10 is also provided with a water discharge port 17, and the liquid sprayed from the spray pipe 15 can be discharged. Preferably, the height of the water outlet 17 is lower than the height of the partition channel 142, so that the liquid in the exhaust treatment box 10 does not completely flow out, but a part of the liquid stays in the exhaust treatment box 10, firstly, the smoke can be reduced from passing through the partition channel 142, secondly, the exhaust treatment box 10 can keep a liquid state, the temperature of the box wall 11 is not too high due to the smoke, thirdly, the liquid level can be kept at the bottom of the exhaust treatment box 10, and the dust removal effect can be achieved when the smoke contacts the liquid level. Optionally, a felt 141 is disposed on one side of the partition 14 located at the air inlet 31, so that when the smoke contacts the partition 14, the large particles can be adsorbed by the felt, and the purpose of dust removal is achieved. Similarly, the side of the spray plate 13 located at the air inlet 31 may be provided with felt. The felt 141 may be provided on both the spray plate 13 and the partition plate 14, or only one of them may be provided thereon, without limitation.

Optionally, the box body 12 is of a detachable structure, so that the spraying plate 13 and the partition 14 can be replaced or cleaned conveniently during detachment, the spraying pipe 15 and the spraying plate 13 are also detachably connected, the spraying pipe 15 can be cleaned or replaced conveniently, and particularly under the condition that the spraying pipe 15 can be blocked.

Optionally, an induced draft fan (not shown) may be further disposed on the exhaust passage 30 to ensure that the flue gas has a certain speed and passes through the exhaust treatment box 10.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A boiler spray dust-settling device comprises a boiler, a combustion chamber arranged in the boiler and an exhaust passage for exhausting flue gas in the combustion chamber, and is characterized in that an exhaust treatment box is arranged on the exhaust passage and comprises a box body and box walls, and the box walls comprise an upper box wall and a lower box wall; the exhaust treatment tank further includes:

a water supply pipe provided outside the exhaust treatment tank;

the partition plate is arranged on the inner side of the exhaust treatment box, is fixedly connected with the lower box wall and is oppositely arranged with the spraying plate at intervals;

2. The boiler spray dust settling device of claim 1, wherein: and one side of the spraying pipe, which is far away from the spraying plate, is provided with a spraying seam so that the liquid in the spraying pipe can flow to the lower box wall under the action of gravity.

3. The boiler spray dust settling device of claim 2, wherein: the width of the gap in the middle of the spray seam is larger than the width of the gaps at the two ends of the spray seam.

4. The boiler spray dust settling device of claim 1, wherein: and one side of the spray pipe, which is far away from the spray plate, is provided with a plurality of spray holes, so that the liquid in the spray pipe can flow to the lower box wall under the action of gravity.

5. The boiler spray dust settling device of claim 4, wherein: the plurality of spray holes are arranged at intervals and connected into one or two straight lines.

6. The boiler spray dust settling device of claim 1, wherein: the bottom of the partition board, which is close to one end of the lower box wall, is provided with a partition board channel, the exhaust treatment box is also provided with a water outlet, and the height of the water outlet is lower than that of the partition board channel.

7. The boiler spray dust settling device of any one of claims 1 to 6, wherein: the exhaust treatment box is provided with an air inlet and an air outlet which are communicated with the exhaust channel, and one side of the partition board and/or the spraying board facing the air inlet is provided with a felt for adsorbing smoke dust in the smoke.

8. The boiler spray dust settling device of any one of claims 1 to 6, wherein: the box is detachable structure, the spray pipe with the spraying board is for dismantling the connection.