CN220443411U

CN220443411U - Coal ash dust suppression device

Info

Publication number: CN220443411U
Application number: CN202321430771.5U
Authority: CN
Inventors: 韩晶
Original assignee: Shaanxi Tongda Yuansheng Network Technology Co ltd
Current assignee: Shaanxi Tongda Yuansheng Network Technology Co ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2024-02-06
Anticipated expiration: 2033-06-07

Abstract

The utility model provides a coal ash dust suppression device, and relates to the technical field of dust suppression. The coal ash dust suppression device comprises a filter tank, a sedimentation tank and a coal ash air inlet pipe, wherein the coal ash air inlet pipe is provided with a fan, the coal ash air inlet pipe is provided with an air outlet end, the air outlet end is connected with the filter tank, the top of the filter tank is provided with an air outlet, the bottom of the filter tank is provided with a sewage pipe extending into the sedimentation tank, a coal ash filtering mechanism positioned between the air outlet and the air outlet end is arranged in the filter tank, a flushing mechanism for flushing the bottom of the coal ash filtering mechanism is also arranged in the filter tank, and the sedimentation tank is filled with a liquid submerged in the port of the sewage pipe.

Description

Coal ash dust suppression device

Technical Field

The utility model relates to the technical field of dust suppression, in particular to a coal ash dust suppression device.

Background

Fly ash is fine ash collected from flue gas after coal combustion, and is main solid waste discharged from coal-fired power plants. With the development of the power industry, the emission of the fly ash of the coal-fired power plant is increased year by year, so that the fly ash becomes one of the industrial waste residues with larger current discharge capacity, and a large amount of fly ash is not treated, so that dust emission can be generated and the atmosphere is polluted.

The fly ash spraying dust suppression device with the prior application number of CN202121712940.5 comprises two vertical beams and a cross beam positioned on the two vertical beams, wherein travelling wheels are arranged at the lower ends of the two vertical beams, a water tank is arranged at the upper part of the cross beam, and a booster pump is arranged at the upper part of the cross beam close to the water tank; the lower part of the cross beam is connected with a spraying pipe through a lifting device, the height of the nozzle can be adjusted according to the height of the fly ash, so that the nozzle is close to the fly ash, the surface of the nozzle is sprayed, and dust emission can be effectively restrained. However, the inventor finds that the fly ash spraying dust suppression device can only spray the fly ash area, cannot suppress the fly ash from the source, and has limited effect.

Accordingly, the prior art is in need of improvement.

Disclosure of Invention

The utility model aims to provide a coal ash dust suppression device, which can solve the problems in the prior art by providing a solution to the defects in the prior art and a corresponding solution to the problems in the prior art, and has the beneficial effect of treating coal ash from the source.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a coal ash dust suppression device, wherein includes filtration jar, sedimentation tank and coal ash intake pipe, the coal ash intake pipe is provided with the fan, the coal ash intake pipe is equipped with the end of giving vent to anger, give vent to anger the end with the filtration jar is connected, the top of filtration jar is equipped with the gas outlet, the bottom of filtration jar is provided with stretches into the sewage pipe of sedimentation tank, the inside of filtration jar is provided with and is located the gas outlet with the coal ash filtering mechanism between the end of giving vent to anger, the inside of filtration jar still is provided with the washing mechanism who washes coal ash filtering mechanism bottom, the sedimentation tank is equipped with the inundation the liquid of sewage pipe port.

Further, in the utility model, the coal ash filtering mechanism comprises a frame, wherein the frame is fixedly connected with the filtering tank, and a conical HEPA filter screen is arranged in the frame.

Further, in the utility model, the filtering tank is provided with a baffle ring for supporting the frame, and the frame is connected with the baffle ring through screws.

Further, in the utility model, a sealing ring abutting against the inner wall of the filter tank is arranged on the outer wall of the frame.

Further, in the utility model, the air outlet end is connected with a vertically upward port, the outer wall of the port is provided with a support rod, and the top of the support rod is provided with a water blocking cover.

Further, in the present utility model, the flushing mechanism includes a water pump and a nozzle connected to each other, and the nozzle is connected to the water blocking cover.

Further, in the present utility model, the sedimentation tank is provided with a discharge pipe provided with a valve.

Further, in the present utility model, a flocculant is added to the liquid.

The utility model has at least the following advantages or beneficial effects:

from the exhaust port of combustion furnace and the coal ash intake pipe connection of coal ash dust suppression device, the inside of fume entering filtration jar filters the inside fume of filtration jar through coal ash filtering mechanism, and the gas after the filtration is discharged from the gas outlet at top, and the coal ash after the filtration adheres to the bottom at coal ash filtering mechanism or falls in the bottom of filtration jar. After one end of the time, the flushing mechanism is started, the bottom of the coal ash filtering mechanism is flushed by clean water, so that the coal ash mixed water is discharged into the liquid of the sedimentation tank from the sewage pipe at the bottom, and the uniform treatment is convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an internal schematic view of a coal ash dust suppression device provided by an embodiment of the utility model;

fig. 2 is a schematic diagram of a soot filtering mechanism according to an embodiment of the present utility model.

Icon: the device comprises a 1-filtering tank, a 101-air outlet, a 102-sewage pipe, a 103-baffle ring, a 2-sedimentation tank, 201-liquid, a 202-discharge pipe, a 203-valve, a 3-coal ash air inlet pipe, a 301-fan, a 302-air outlet end, a 303-port, a 3031-support rod, a 304-water retaining cover, a 4-coal ash filtering mechanism, a 401-frame, a 402-HEPA filter screen, a 403-sealing ring, a 5-flushing mechanism, a 501-water pump and a 502-nozzle.

Detailed Description

Examples

Referring to fig. 1 to 2, a coal ash suppression device is provided according to an embodiment of the utility model, which is used for treating gas with coal ash discharged from a chimney, and specific results are as follows.

Referring to fig. 1, the dust suppression device provided by the embodiment of the utility model mainly comprises a filter tank 1, a sedimentation tank 2, a coal ash air inlet pipe 3, a coal ash filtering mechanism 4 and a flushing mechanism 5, wherein the filter tank 1 is used for providing a place for filtering coal ash, the sedimentation tank 2 is used for collecting the coal ash for uniform treatment, the coal ash air inlet pipe 3 is used for introducing flue gas after coal combustion into the filter tank 1, the coal ash filtering mechanism 4 is used for filtering the flue gas, the coal ash content in the discharged flue gas is reduced, and the flushing mechanism 5 is used for cleaning the coal ash attached to the bottom of the coal ash filtering mechanism 4, so that a better filtering effect is ensured.

It should be noted that, two coal ash suppression devices may be installed for one combustion coal stove, when the flushing mechanism 5 of one coal ash suppression device works, the flushing mechanism 5 of the other coal ash suppression device does not work, so that the flue gas can be filtered normally.

Further, referring to fig. 1, the filtering tank 1 may be a cylindrical tank body formed by pouring cement, and has the advantage of high temperature resistance. The top of the filter tank 1 is provided with an air outlet 101 for discharging flue gas, the bottom of the filter tank 1 is in a funnel shape with a wide upper part and a thin lower part, and a sewage pipe 102 which is vertically downward is arranged at the bottom of the filter tank 1 and is used for discharging sewage mixed with coal ash.

Further, as shown in fig. 1, the soot air inlet pipe 3 is a flue gas conveying pipe, one end of the soot air inlet pipe 3 is in butt joint with a chimney of the coal stove, and a fan 301 can be installed on the soot air inlet pipe 3 for accelerating the flow of the flue gas. The other end of the coal ash air inlet pipe 3 is connected with an air outlet end 302, the air outlet end 302 penetrates through a pipe hole formed in the side wall of the filter tank 1 and stretches into the filter tank 1, and flue gas can be conveyed to the filter tank 1, so that the flue gas is discharged to the outside after being treated, and the coal ash dust suppression is realized from the source. For fixation, the outlet end 302 and the filter canister 1 side wall may be welded at the tube holes.

As shown in fig. 1, the air outlet end 302 is connected with a port 303, the air outlet end 302 is in a horizontal state, and the port 303 is in a vertical state. The flue gas with the coal ash in the coal ash inlet pipe 3 sequentially passes through the air outlet end 302 and the port 303, and finally is sprayed out from the top of the port 303.

Further, as shown in connection with fig. 1, in order to avoid water from entering the port 303, a water blocking cover 304 is mounted on top of the port 303. The appearance of manger plate lid 304 is the toper, has two bracing pieces 3031 at the outer wall welding of port 303, and the top and the bottom fixed connection of manger plate lid 304 of bracing piece 3031. The top of port 303 is covered to manger plate lid 304, avoids water to get into, has the interval between manger plate lid 304 and the top of port 303 simultaneously, does not influence the flue gas to discharge into filter tank 1 from port 303.

Further, referring to fig. 1, the flushing mechanism 5 mainly comprises a water pump 501 and a spray head 502, which can be devices in the prior art. Wherein water pump 501 fixed mounting is on the outer wall of filtration jar 1, and shower nozzle 502 is installed on the top of manger plate lid 304, and water pump 501 and shower nozzle 502 pass through a water piping connection, and water pump 501 reconnection water tank. After the water pump 501 is operated, the spray head 502 sprays water flow, the water flow washes the bottom of the coal ash filtering mechanism 4, sewage is mixed with coal ash and flows down, and the sewage flows into the sedimentation tank 2 through the sewage pipe 102. The spray head 502 can be flushed once at intervals, and flue gas filtration is facilitated when not flushed.

Referring to fig. 1 and 2, the soot filtering mechanism 4 mainly comprises a frame 401 and a tapered HEPA filter, wherein the frame 401 is annular, and the tapered HEPA filter is installed inside the frame 401. The inner wall of the filter tank 1 is provided with the baffle ring 103, the soot filter mechanism 4 is placed on the baffle ring 103 during installation, the baffle ring 103 supports the frame 401, screw holes on the frame 401 are aligned with screw holes of the baffle ring 103, and then screws are inserted, so that the soot filter mechanism 4 is fixed inside the filter tank 1.

As shown in fig. 2, a ring of sealing ring 403 is installed on the outer wall of the frame 401, and a high temperature resistant sealing ring 403 in the prior art is used. When the coal ash filtering mechanism 4 is fixed in the filtering tank 1, the sealing ring 403 is extruded by the frame 401 and the filtering tank 1, so that a good sealing effect is achieved, smoke is prevented from escaping from the gap, and the filtering effect is improved.

Referring to fig. 1, the sedimentation tank 2 is a tank body poured by cement, the sedimentation tank 2 is filled with liquid 201, and the lower port of the sewage pipe 102 extends into the liquid 201 of the sedimentation tank 2. In order to collect the coal ash in the sedimentation tank 2 more easily, a flocculating agent is added into the liquid 201, and the flocculating agent can adopt a polymer flocculating agent of aluminum salt and ferric salt in the prior art, which is beneficial to the sedimentation of coal ash particles.

Further, a discharge pipe 202 is installed on the sedimentation tank 2, and a valve 203 is installed on the discharge pipe 202. After the valve 203 is opened, the liquid 201 in the sedimentation tank 2 can be discharged from the discharge pipe 202, so that the uniform collection and treatment are facilitated.

The working principle of the coal ash dust suppression device of the embodiment of the utility model is as follows:

the flue gas from the combustion furnace is filtered through a coal ash filtering mechanism 4 in the flue gas entering the filtering tank 1 through a flue gas outlet 3 connected with a coal ash inlet pipe 3 of the coal ash dust suppression device, the filtered gas is discharged from an air outlet 101 at the top, and the filtered coal ash is attached to the bottom of the coal ash filtering mechanism 4 or falls to the bottom of the filtering tank 1. After a certain time, the flushing mechanism 5 is started, the bottom of the coal ash filtering mechanism 4 is flushed by clean water, and the coal ash mixed water is discharged into the liquid 201 of the sedimentation tank 2 from the sewage pipe 102 at the bottom, so that unified treatment is facilitated.

In summary, the embodiment of the utility model provides a coal ash dust suppression device, which comprises a filter tank 1, a sedimentation tank 2 and a coal ash air inlet pipe 3, wherein the coal ash air inlet pipe 3 is provided with a fan 301, the coal ash air inlet pipe 3 is provided with an air outlet end 302, the air outlet end 302 is connected with the filter tank 1, the top of the filter tank 1 is provided with an air outlet 101, the bottom of the filter tank 1 is provided with a sewage pipe 102 extending into the sedimentation tank 2, the filter tank 1 is internally provided with a coal ash filtering mechanism 4 between the air outlet 101 and the air outlet end 302, the filter tank 1 is internally provided with a flushing mechanism 5 for flushing the bottom of the coal ash filtering mechanism 4, and the sedimentation tank 2 is internally provided with a liquid 201 for flooding a port 303 of the sewage pipe 102. The coal ash filtering mechanism 4 comprises a frame 401, the frame 401 is fixedly connected with the filtering tank 1, and a conical HEPA filter screen 402 is arranged in the frame 401. The filter tank 1 is provided with a baffle ring 103 for supporting a frame 401, and the frame 401 is connected with the baffle ring 103 by screws. The outer wall of the frame 401 is provided with a sealing ring 403 abutting against the inner wall of the filter tank 1. The end 302 of giving vent to anger is connected with vertical up port 303, and the outer wall of port 303 is provided with the bracing piece, and the top of bracing piece is provided with manger plate lid 304. The flushing mechanism 5 comprises a water pump 501 and a spray head 502 connected to each other, the spray head 502 being connected to the water deflector cover 304. The sedimentation tank 2 is provided with a discharge pipe 202, and the discharge pipe 202 is provided with a valve 203. Flocculant is added to the liquid 201. Therefore, the coal ash dust suppression device provided by the embodiment of the utility model has the advantage of managing coal ash from the source, and has a better coal ash dust suppression effect.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a coal ash dust suppression device, its characterized in that, including filtration jar, sedimentation tank and coal ash intake pipe, the coal ash intake pipe is provided with the fan, the coal ash intake pipe is equipped with the end of giving vent to anger, give vent to anger the end with the filtration jar is connected, the top of filtration jar is equipped with the gas outlet, the bottom of filtration jar is provided with stretches into the sewer pipe of sedimentation tank, the inside of filtration jar is provided with and is located the gas outlet with give vent to anger the inside of end between coal ash filtering mechanism, the inside of filtration jar still is provided with the washing mechanism of coal ash filtering mechanism bottom, the sedimentation tank is equipped with the inundation the liquid of sewer pipe port.

2. The coal ash dust suppression device of claim 1, wherein the coal ash filtering mechanism comprises a frame fixedly connected with the filter tank, and a conical HEPA filter screen is arranged in the frame.

3. The coal dust suppression device of claim 2, wherein the filter tank is provided with a baffle ring for supporting the frame, and the frame is connected with the baffle ring through screws.

4. A coal dust suppression device according to claim 3, wherein the outer wall of the frame is provided with a sealing ring abutting the inner wall of the filter tank.

5. The coal ash dust suppression device according to claim 1, wherein the air outlet end is connected with a vertically upward port, a support rod is arranged on the outer wall of the port, and a water blocking cover is arranged on the top of the support rod.

6. The soot dust suppression device of claim 5, wherein the flushing mechanism comprises a water pump and a spray head connected to each other, the spray head being connected to the water deflector.

7. The coal dust suppression device according to claim 1, wherein the sedimentation tank is provided with a discharge pipe provided with a valve.

8. A coal ash suppression device according to any of claims 1-7, characterized in that a flocculant is added to the liquid.