Denitration and dust removal metal chimney

Abstract

The utility model relates to the technical field of metal chimneys, in particular to a denitration and dust removal metal chimney which comprises a chimney, a movable plate is slidably connected to the interior of the chimney, and a first filter screen is fixedly connected to the interior of the movable plate; and the box body is in sliding connection with the chimney, a first cavity is formed in the box body, and a plurality of pipelines are fixedly connected to the inner walls of the two sides of the box body. Dust contained in flowing flue gas is filtered and collected through a first filter screen, the filtered flue gas flows into a first cavity through a plurality of groove holes, then the flue gas flows into the cavity through a plurality of pipelines, and then the flowing flue gas in the cavity uniformly flows out into a box body through a plurality of through holes; a proper amount of decomposition liquid is stored in the box body, primary denitration treatment is conducted on flue gas through the decomposition liquid in the box body, and meanwhile the decomposition liquid can be prevented from flowing into the first cavity through the pressure difference in the chimney and the arranged L-shaped pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of metal chimneys, in particular to a denitration and dust removal metal chimney. Background Art

[0002] A chimney is a structure that provides ventilation for hot flue gases or smoke from a boiler, furnace, stove or fireplace. Chimneys are usually vertical, or as close to vertical as possible, to ensure a smooth flow of gases, drawing air into the so-called chimney combustion or chimney effect. The space inside a chimney is called a flue. Chimneys may be found in buildings, steam locomotives and ships. Chimneys are used to discharge exhaust gases, flue gas, etc., mainly for civil and industrial use. Industrial chimneys will emit toxic waste gases containing sulfur and nitrate, and the flue gas needs to be denitrated and dusted in the chimney.

[0003] After searching, the utility model patent with Chinese patent publication number CN214120094U discloses a desulfurization and denitrification chimney, including a chimney pipe one and a spray unit; chimney pipe one: a dust collecting chamber is arranged at the bottom, a base is arranged at the bottom of the dust collecting chamber, a chimney pipe two is arranged at the top of the chimney pipe one, a chimney pipe three is arranged at the top of the chimney pipe two, a smoke inlet pipe is arranged at the middle part of the front side of the chimney pipe one, and a dust cleaning unit is arranged at the rear side of the dust collecting chamber; the spray unit: comprises a pump body, a first connecting pipe, a first annular connecting pipe, a second annular connecting pipe, a second connecting pipe, a third connecting pipe and an atomizing nozzle. The desulfurization and denitrification chimney has good purification effect, can automatically clean the dust particles accumulated at the bottom of the chimney, greatly reduces the cost of cleaning the dust particles at the bottom of the chimney, and can effectively ensure the exhaust quality of the chimney.

[0004] The above patents have been searched and found to have dealt with flue gas purification and dust cleaning. However, the device only purifies the flue gas by spraying, which may cause the sprayed decomposition liquid to fail to completely purify the flue gas, thus easily leading to incomplete flue gas purification. Utility Model Content

[0005] The utility model aims to provide a denitrification and dust removal metal chimney, through which the effect of multiple denitrification of flue gas can be achieved, so as to solve the problem that it is not convenient to carry out multiple denitrification of flue gas in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A denitrification and dust removal metal chimney comprises a chimney, a movable plate is slidably connected to the inside of the chimney, a filter screen is fixedly connected to the inside of the movable plate, and the filter screen is used for dust filtering; a box body, the box body is slidably connected to the chimney, a cavity is arranged inside the box body, a plurality of slots are arranged at the lower end of the box body, the slots are connected to the cavity, a plurality of pipes are fixedly connected to the inner walls on both sides of the box body, and the pipes are arranged in an L shape; a plurality of nozzles are respectively arranged on the inner walls on the four sides of the chimney, and the nozzles are used for flue gas denitrification.

[0008] Preferably, a handle is fixedly connected to the side wall of the movable plate, and a handle is fixedly connected to the side wall of the box body, and both the handle and the handle are covered with a protective cover.

[0009] Preferably, the lower ends of the plurality of pipes are commonly fixedly connected to a plate, a cavity is provided inside the plate, and the upper end of the cavity is communicated with the lower end of the pipe.

[0010] Preferably, a plurality of through holes are provided at the lower end of the plate, and the upper ends of the plurality of through holes are connected to the lower end of the cavity.

[0011] Preferably, a second cavity is provided inside the side wall of the chimney, one side of the second cavity is connected to the nozzle, and the other side of the second cavity is connected to a connecting pipe.

[0012] Preferably, a second filter is fixedly connected to the inside of the chimney by bolts, the second filter is made of activated carbon, and the second filter is located above the nozzle.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] 1. The dust contained in the flowing flue gas is filtered and collected through a filter. The filtered flue gas flows into a cavity through a plurality of slots, and then flows into the cavity through a plurality of pipes. Then, the flue gas flowing in the cavity flows out evenly into the box through a plurality of through holes. An appropriate amount of decomposition liquid is stored in the box. The flue gas is subjected to a primary denitrification treatment through the decomposition liquid in the box. At the same time, the pressure difference inside the chimney and the L-shaped pipe can prevent the decomposition liquid from flowing into the cavity.

[0015] 2. After the initial treatment, the flue gas flows upward from the inside of the box, and the decomposition liquid is input into the connecting pipe through the water pump. At the same time, the connecting pipe inputs the decomposition liquid into the second cavity, and then the decomposition liquid is sprayed out through multiple nozzles to perform secondary desulfurization treatment on the flue gas, and finally passes through the second filter to remove the odor and odor contained in the flue gas. This improves the effect of flue gas purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a front cross-sectional structural schematic diagram of a denitrification and dust removal metal chimney.

[0017] Figure 2 The utility model provides a schematic diagram of the cross-sectional structure of a denitrification and dust removal metal chimney in a top view.

[0018] Figure 3 The utility model is a schematic diagram of the side structure of a denitrification and dust removal metal chimney.

[0019] In the figure: 1 chimney, 2 movable plate, 3 filter screen 1, 4 handle, 5 box, 6 handle, 7 cavity 1, 8 slot hole, 9 pipe, 10 plate, 11 cavity, 12 through hole, 13 cavity 2, 14 nozzle, 15 connecting pipe, 16 filter screen 2. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3 A metal chimney for denitrification and dust removal comprises a chimney 1, wherein a movable plate 2 is slidably connected inside the chimney 1, and a filter screen 3 is fixedly connected inside the movable plate 2, and the filter screen 3 is used for dust filtering; a box body 5, wherein the box body 5 is slidably connected to the chimney 1, a cavity 7 is arranged inside the box body 5, and a plurality of slots 8 are arranged at the lower end of the box body 5, and the slots 8 are connected to the cavity 7, and a plurality of pipes 9 are fixedly connected to the inner walls on both sides of the box body 5, and the pipes 9 are arranged in an L shape; a plurality of nozzles 14, wherein the plurality of nozzles 14 are respectively arranged on the inner walls on the four sides of the chimney 1, and the nozzles 14 are used for flue gas denitrification, and a wind turbine is installed inside the chimney 1. The fan accelerates the flue gas flow rate inside the chimney 1, and filters the dust contained in the flowing flue gas through the filter screen 3. The filtered flue gas flows into the cavity 7 through multiple slots 8, and then flows into the box 5 through multiple pipes 9. An appropriate amount of decomposition liquid is stored in the box 5. The decomposition liquid in the box 5 performs a primary denitrification treatment on the flue gas. The denitrification decomposition liquid is sprayed out through multiple nozzles 14 after the primary treatment, thereby performing a secondary denitrification treatment on the flue gas. At the same time, the sprayed decomposition liquid falls into the box 5 for collection.

[0022] A handle 4 is fixedly connected to the side wall of the movable plate 2, and a handle 6 is fixedly connected to the side wall of the box body 5. The handle 4 and the handle 6 are both provided with protective covers. By pulling the handle 4 and the handle 6 respectively, the movable plate 2 and the box body 5 can be easily pulled out from the inside of the chimney 1, so that the filter screen 3 and the box body 5 can be cleaned.

[0023] The lower ends of the multiple pipes 9 are fixedly connected to a plate 10 , a cavity 11 is provided inside the plate 10 , the upper end of the cavity 11 is connected to the lower end of the pipes 9 , and the flowing smoke flows into the cavity 11 through the multiple pipes 9 .

[0024] A plurality of through holes 12 are provided at the lower end of the plate 10 , and the upper ends of the plurality of through holes 12 are connected to the lower end of the cavity 11 . Through the plurality of through holes 12 , the flue gas flowing in the cavity 11 can flow out to the inside of the box body 5 evenly.

[0025] A cavity 13 is provided inside the side wall of the chimney 1. One side of the cavity 13 is connected to the nozzle 14, and the other side of the cavity 13 is connected to a connecting pipe 15. The input end of the connecting pipe 15 is connected to an external water pump. The decomposition liquid is input into the connecting pipe 15 through the water pump. At the same time, the connecting pipe 15 inputs the decomposition liquid into the cavity 13, and then the decomposition liquid is sprayed out through multiple nozzles 14.

[0026] A filter screen 16 is fixedly connected to the inside of the chimney 1 by bolts. The filter screen 16 is made of activated carbon. The filter screen 16 is located above the nozzle 14. The filter screen 16 is made of activated carbon and can remove odors and peculiar smells contained in the smoke.

[0027] In the utility model, a fan is installed inside the chimney 1, and the fan is used to accelerate the flow rate of flue gas inside the chimney 1, and the dust contained in the flowing flue gas is filtered through the filter 3. The filtered flue gas flows into the cavity 7 through a plurality of slots 8, and then flows into the cavity 11 through a plurality of pipes 9, and then the flowing flue gas in the cavity 11 flows out evenly into the box 5 through a plurality of through holes 12. An appropriate amount of decomposition liquid is stored inside the box 5, and the decomposition liquid inside the box 5 is used to perform the initial denitrification treatment on the flue gas.

[0028] The smoke after the initial treatment flows upward from the inside of the box 5, and the decomposition liquid is input into the inside of the connecting pipe 15 through the water pump. At the same time, the connecting pipe 15 inputs the decomposition liquid into the inside of the second cavity 13, and then the decomposition liquid is sprayed out through multiple nozzles 14, thereby performing a secondary denitrification treatment on the smoke, and finally passing through the second filter 16 to remove the odor and peculiar smell contained in the smoke.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A metal chimney for denitrification and dust removal, characterized in that: include A chimney (1), wherein a movable plate (2) is slidably connected inside the chimney (1), a filter screen (3) is fixedly connected inside the movable plate (2), and the filter screen (3) is used for dust filtering; A box body (5), the box body (5) being slidably connected to the chimney (1), a cavity (7) being arranged inside the box body (5), a plurality of slots (8) being arranged at the lower end of the box body (5), the slots (8) being communicated with the cavity (7), a plurality of pipes (9) being fixedly connected to the inner walls on both sides of the box body (5), the pipes (9) being arranged in an L shape; A plurality of nozzles (14) are respectively arranged on the inner walls of four sides of the chimney (1), and the nozzles (14) are used for flue gas denitrification.

2. A denitrification and dust removal metal chimney according to claim 1, characterized in that: A handle (4) is fixedly connected to the side wall of the movable plate (2), and a handle (6) is fixedly connected to the side wall of the box body (5). Both the handle (4) and the handle (6) are covered with protective covers.

3. A denitrification and dust removal metal chimney according to claim 1, characterized in that: The lower ends of the plurality of pipes (9) are commonly fixedly connected to a plate (10), a cavity (11) is provided inside the plate (10), and the upper end of the cavity (11) is communicated with the lower end of the pipe (9).

4. A denitrification and dust removal metal chimney according to claim 3, characterized in that: A plurality of through holes (12) are provided at the lower end of the plate (10), and the upper ends of the plurality of through holes (12) are all connected to the lower end of the cavity (11).

5. A denitrification and dust removal metal chimney according to claim 1, characterized in that: A second cavity (13) is provided inside the side wall of the chimney (1), one side of the second cavity (13) is connected to the nozzle (14), and the other side of the second cavity (13) is connected to a connecting pipe (15).

6. A denitrification and dust removal metal chimney according to claim 1, characterized in that: A second filter screen (16) is fixedly connected to the inside of the chimney (1) by bolts. The second filter screen (16) is made of activated carbon. The second filter screen (16) is located above the nozzle (14).

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