CN223233558U - Flue gas particulate matter processing apparatus - Google Patents

Abstract

The present application provides a flue gas particulate matter treatment device, comprising: a housing, a spray unit, and a filter unit; an air inlet at the bottom of the housing is connected to a smoke exhaust device, and an air outlet is provided at the top of the housing; the spray unit comprises a water reservoir, a water pump, a spray pipe, and an atomizing nozzle; the water reservoir is connected to the housing, one end of the spray pipe is connected to the water reservoir via the water pump, and the other end of the spray pipe is respectively connected to a plurality of spray branch pipes, the plurality of spray branch pipes extend horizontally into the housing, and the bottoms of the spray branch pipes are connected to a plurality of atomizing nozzles; a filter wall is vertically provided near the water pump in the water reservoir, the filter wall divides the water reservoir into a concentrated liquid area and a clear liquid area, and the end of the spray pipe away from the atomizing nozzle is connected to the clear liquid area; the filter unit is provided in the housing and is located between the air inlet and the atomizing nozzle. The present application achieves efficient capture and treatment of particulate matter in flue gas, making the equipment more simple and centralized, reducing operating costs, and improving flue gas treatment efficiency.

Description

Flue gas particulate matter processing apparatus

Technical Field

The application relates to the technical field of flue gas treatment, in particular to a flue gas particulate matter treatment device.

Background

In the process of chemical production operation, chemical equipment (such as a boiler, a graphitizing furnace and the like) usually generates a large amount of flue gas, and the flue gas not only contains polluted gas, but also is mixed with more impurity particles, and the impurity particles are directly discharged into the atmosphere, so that the atmosphere is polluted, and the harm to human production and life is caused. Therefore, the flue gas needs to be treated, and before the flue gas is discharged, particles in the flue gas are captured, so that the purpose of purifying the flue gas is achieved.

In the prior art, when particles in the flue gas are treated, the multistage dust removal equipment (such as cyclone dust collectors) are connected in series, but the mode has the problems of large electric energy consumption and large equipment occupation area in the treatment process and incomplete treatment of fine particles.

Disclosure of utility model

The present application provides a flue gas particulate treatment device for solving the above-mentioned problems mentioned in the background art.

The application provides a flue gas particulate matter treatment device which comprises a box body, a spraying unit and a filtering unit, wherein an air inlet at the lower part of the box body is communicated with smoke exhaust equipment through a flue gas inlet pipe, and an air outlet is formed in the top of the box body;

The spraying unit comprises a reservoir, a water pump, a spraying pipe and an atomizing nozzle, wherein the reservoir is positioned below the box body and is communicated with the box body, one end of the spraying pipe is communicated with the reservoir through the water pump, the other end of the spraying pipe is respectively communicated with a plurality of spraying branched pipes, the spraying branched pipes horizontally extend into the box body, and the bottoms of the spraying branched pipes are connected with a plurality of atomizing nozzles;

A filtering wall is vertically arranged at the position, close to the water pump, in the reservoir, and divides the reservoir into a concentrated solution area and a clear solution area, and one end, far away from the atomizing nozzle, of the spray pipe is communicated with the clear solution area;

the filter unit is arranged in the box body and is positioned between the air inlet and the atomizing nozzle.

Optionally, the filter unit includes filter, flexible cylinder, filter residue receiving tank, and the filter slope sets up in the box, and flexible cylinder's stiff end is located the outside of the box of being connected with the higher one end of filter, and flexible cylinder's flexible end is connected with the push pedal, and the push pedal stretches into in the box along the incline direction of filter, and the bottom of push pedal and the face contact setting of filter, and the filter residue receiving tank sets up in the lower one end of filter.

Optionally, the connection part of the telescopic cylinder and the side wall of the box body is in flexible sealing connection.

Optionally, the filter residue receiving tank is also connected with a filter press, and a liquid outlet of the filter press is communicated with the clear liquid area.

Optionally, an adsorption unit is arranged above the spraying unit in the box body, the adsorption unit comprises an active carbon filter screen plate, a re-cooling pipe and a refrigerator, the periphery of the active carbon filter screen plate is connected with the inner wall of the box body, and the re-cooling pipe penetrates through the inside of the active carbon filter screen plate and is arranged in a curve;

the heat exchange medium inlet end of the recooling pipe is communicated with the outlet of the refrigerator, and the heat exchange medium outlet end of the recooling pipe is communicated with the inlet of the refrigerator.

Optionally, a pre-cooling pipe is arranged on the periphery of the flue gas inlet pipe, and a pre-cooling cavity is formed by the inner wall of the pre-cooling pipe and the outer wall of the flue gas inlet pipe;

The outlet end of the heat exchange medium of the recooling pipe is communicated with the inlet of the pre-cooling pipe, and the outlet of the pre-cooling pipe is communicated with the inlet of the refrigerator.

Optionally, a suspended matter concentration sensor is arranged in the concentrated solution area.

The flue gas particulate matter treatment device provided by the application realizes the efficient trapping treatment of particulate matters in flue gas, and has the following beneficial effects compared with the prior art:

(1) The filtering unit is used for filtering larger particles in the flue gas, and the impurities of the large particles fall into the reservoir after being filtered, so that preliminary trapping of the particle impurities is realized. The flue gas continues to move upwards after passing through the filter unit, the spray unit sprays the absorption liquid into the flue gas, the vaporific absorption liquid falls down in-process and contacts with the flue gas, tiny particles in the flue gas collide with the absorption liquid sprayed out by the spray unit, and when the absorption liquid absorbs acidic substances, the absorption liquid continuously gathers among the particles and forms large particles, and then falls down to the filter unit under the action of gravity, the particles fall on the filter unit, and the absorption liquid falls into the reservoir through the filter unit. Simultaneously, the flue gas is cooled, and acidic substances in the flue gas can be absorbed, so that the formation of atmospheric pollution or aggravated acid rain caused by the fact that the acidic substances are discharged into the atmosphere along with the flue gas is avoided. The flue gas after dust removal continuously rises to the top of the box body and is discharged through the air outlet. The absorption liquid is sprayed out through the plurality of atomizing nozzles, the contact area of the spray-shaped absorption liquid and the smoke is larger, the cooling and dust removing efficiency of the smoke can be improved, meanwhile, the spraying unit sprays the absorption liquid, the use of the absorption liquid can be saved, and the cost is reduced. According to the application, the filtering unit and the spraying unit are concentrated in the box body to treat the particulate matters in the flue gas, so that the flue gas treatment equipment is more concise and centralized, and compared with the prior art, the flue gas treatment equipment has the advantages of reducing the floor area of the equipment, reducing the treatment flow, simultaneously, being more convenient for equipment overhaul, greatly reducing the consumption of electric energy and operating cost, and improving the flue gas treatment efficiency.

(2) The adsorption unit is arranged to further cool and adsorb the flue gas, so that the treatment efficiency of the flue gas is improved. The adsorption unit comprises an active carbon filter screen plate, a re-cooling pipe and a refrigerator, wherein the active carbon filter screen plate is used for re-adsorbing the flue gas and adsorbing pollutants such as fine particles therein so as to achieve the effect of further purification. The recooling pipe is a curved pipeline with a heat exchange medium inlet end and a heat exchange medium outlet end, the recooling pipe is positioned in the active carbon filter screen plate and penetrates through the active carbon filter screen plate, the refrigerator conveys the heat exchange medium into the recooling pipe, when the flue gas passes through the adsorption unit, impurity particles in the flue gas are adsorbed again by the active carbon filter screen plate, and meanwhile, the flue gas exchanges heat with the heat exchange medium in the recooling pipe, so that the temperature of the flue gas is further reduced, the impurity particle content of the flue gas is greatly reduced, and the pollution of the flue gas to the surrounding environment is avoided.

(3) The flue gas particulate matter treatment device provided by the application is simple to operate, convenient to install, small in occupied area and suitable for large-area popularization in industry.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a flue gas particulate treatment device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a flue gas particulate treatment device according to another embodiment of the present application;

FIG. 3 is a schematic diagram of an adsorption unit according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a flue gas particulate treatment device according to another embodiment of the present application;

reference numerals illustrate:

The device comprises a box body, a flue gas inlet pipe, a spraying unit, a filtering unit, an air inlet, an air outlet, a reservoir, a filter wall, a concentrated liquid area, a clear liquid area, a water pump, a spray pipe, a spray nozzle, a spray branched pipe, a suspended matter concentration sensor, a filter plate, a telescopic cylinder, a push plate, a filter residue receiving tank, a filter plate, a filter press, an active carbon filter screen, a filter plate, a re-cooling pipe, a refrigerator, a pre-cooling pipe, a pre-cooling cavity and a pre-cooling cavity.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are also within the scope of the application.

As shown in FIG. 1, the application provides a flue gas particulate treatment device, which comprises a box body 1, a spraying unit 3 and a filtering unit 4, wherein an air inlet 110 at the lower part of the box body 1 is communicated with a smoke discharging device through a flue gas inlet pipe 2, and an air outlet 120 is arranged at the top of the box body 1;

The spraying unit 3 comprises a water reservoir 310, a water pump 320, a spraying pipe 330 and an atomizing nozzle 340, wherein the water reservoir 310 is positioned below the box body 1 and is communicated with the box body 1, one end of the spraying pipe 330 is communicated with the water reservoir 310 through the water pump 320, the other end of the spraying pipe 330 is respectively communicated with a plurality of spraying branched pipes 350, the spraying branched pipes 350 horizontally extend into the box body 1, and the bottom of the spraying branched pipes 350 is connected with a plurality of atomizing nozzles 340;

A filter wall 311 is vertically arranged in the reservoir 310 and close to the water pump 320, the filter wall 311 divides the reservoir 310 into a concentrated solution area 312 and a clear solution area 313, and one end of the spray pipe 330, which is far away from the atomizing nozzle 340, is communicated with the clear solution area 313;

The filter unit 4 is disposed in the case 1 and located between the air inlet 110 and the atomizer 340.

Specifically, in this embodiment, the flue gas generated in the operation of the graphitizing furnace is taken as an example, and the principle of the technical scheme provided by the application is explained. In the operation process of the graphitizing furnace, smoke is generated, wherein common carbon materials such as coal, biochar and the like are discharged along with the smoke at high temperature, and the temperature is reduced and particle dust is removed before the smoke is discharged to the atmosphere. In the scheme provided by the application, the flue gas in the graphitization furnace is conveyed into the box body 1 through the flue gas inlet pipe 2, the flue gas moves from bottom to top in the box body 1, the spraying unit 3 and the filtering unit 4 are arranged in the box body 1, the flue gas moves from bottom to top after entering the box body 1, and when passing through the filtering unit 4, the filtering unit 4 filters larger particles in the flue gas, and the impurities of the large particles are filtered and then fall into the reservoir 310, so that the primary trapping of the particle impurities is realized. The flue gas continues to move upwards after passing through the filtering unit 4, the spraying unit 3 sprays the absorption liquid into the flue gas, the vaporific absorption liquid contacts with the flue gas in the falling process, the temperature of the flue gas is reduced, and acidic substances and other soluble substances in the flue gas can be absorbed, so that the formation of atmospheric pollution or aggravating acid rain caused by the fact that the acidic substances are discharged into the atmosphere along with the flue gas is avoided. At the same time, tiny particles in the flue gas collide with the absorption liquid sprayed out by the spraying unit 3, and when the absorption liquid absorbs acidic substances, the small particles continuously gather to form large particles, and then fall to the filtering unit 4 under the action of gravity, the particles fall on the filtering unit 4, and the absorption liquid falls into the reservoir 310 through the filtering unit 4. The flue gas after cooling and dedusting continues to rise to the top of the box body 1 and is discharged through the air outlet 120.

Further, a vibrator is provided at the bottom of the filter unit 4 to vibrate the filter unit 4 at regular time, so that the particles attached to the filter unit 4 are facilitated to fall into the water reservoir 310.

The spraying unit 3 includes a water reservoir 310, a water pump 320, a spray pipe 330 and an atomization nozzle 340, wherein the water reservoir 310 is used for storing an absorption liquid, the absorption liquid is determined according to the property of the impurity particles of the flue gas in actual working conditions, for example, when the flue gas contains acidic substances, the absorption liquid can be water or alkali liquor. Particles which are filtered by the filter unit 4 and then fall into the reservoir 310 fall into the concentrated solution area 312, and after being filtered by the filter wall 311, clear solution enters the clear solution area 313 to circularly spray the absorption solution. The power is provided through the operation of the water pump 320, the absorption liquid in the reservoir 310 is pumped to the plurality of spraying branch pipes 350 through the spraying pipes 330, and the absorption liquid is sprayed out of the atomizing nozzle 340 through the plurality of spraying branch pipes 350, so that the contact area between the sprayed absorption liquid and the flue gas is larger, the capturing efficiency of fine particles in the flue gas can be improved, and meanwhile, the absorption liquid is sprayed by the spraying unit 3, so that the use of the absorption liquid can be saved, and the cost is reduced. According to the application, the filtering unit and the spraying unit are concentrated in the box body 1 to treat the particulate matters in the flue gas, so that the flue gas treatment equipment is more concise and centralized, compared with the prior art, the floor area of the equipment is reduced, the treatment flow is reduced, meanwhile, the equipment is more convenient to overhaul, the consumption of electric energy is greatly reduced, and the operation cost is reduced, thereby improving the flue gas treatment efficiency.

According to the scheme, the high-efficiency trapping treatment of the particulate matters in the flue gas is realized, the filtering unit is used for filtering larger particles in the flue gas, and the impurities of the large particles are filtered and then fall into the reservoir, so that the primary trapping of the particulate impurities is realized. And then spraying the absorption liquid into the flue gas through the spraying unit, enabling tiny particles in the flue gas to collide with the absorption liquid sprayed out of the spraying unit in the falling process of the vaporific absorption liquid, enabling the particles to continuously gather and form large particles while absorbing acidic substances, and then falling to the filtering unit under the action of gravity, enabling the particles to fall on the filtering unit, and enabling the absorption liquid to fall into the reservoir through the filtering unit. Meanwhile, the flue gas can be cooled, acidic substances in the flue gas can be absorbed, and the formation of atmospheric pollution or aggravated acid rain caused by the fact that the acidic substances are discharged into the atmosphere along with the flue gas is avoided. Meanwhile, the flue gas after cooling and dedusting continuously rises to the top of the box body and is discharged through the air outlet. The absorption liquid is sprayed out through the plurality of atomizing nozzles, the contact area of the atomized absorption liquid and the flue gas is larger, the trapping efficiency of fine particles in the flue gas can be improved, meanwhile, the absorption liquid is sprayed by the spraying unit, the use of the absorption liquid can be saved, and the cost is reduced. According to the application, the filtering unit and the spraying unit are concentrated in the box body to treat the particulate matters in the flue gas, so that the flue gas treatment equipment is more concise and centralized, and compared with the prior art, the flue gas treatment equipment has the advantages of reducing the equipment floor area, reducing the treatment flow, being more convenient for equipment overhaul and reducing the operation cost, and thus improving the flue gas treatment efficiency.

As shown in fig. 2, optionally, the filtering unit 4 includes a filtering plate 410, a telescopic cylinder 420, and a filtering residue receiving tank 430, wherein the filtering plate 410 is obliquely disposed in the box 1, the fixed end of the telescopic cylinder 420 is located at the outer side of the box 1 connected with the higher end of the filtering plate 410, the telescopic end of the telescopic cylinder 420 is connected with a pushing plate 421, the pushing plate 421 extends into the box 1 along the oblique direction of the filtering plate 410, the bottom of the pushing plate 421 is in contact with the plate surface of the filtering plate 410, and the filtering residue receiving tank 430 is disposed at the lower end of the filtering plate 410.

Specifically, when the flue gas enters the box 1, large particles in the flue gas are filtered through the filter plate 410, so that the primary trapping of the particles in the flue gas is realized. After the flue gas continues to move upwards and passes through the filter plate 410, tiny particles in the flue gas collide with the absorption liquid sprayed out by the spraying unit 3, and the absorption liquid continuously gathers among particles to form large particles while absorbing acidic substances and soluble substances, and then falls onto the filter plate 410 under the action of gravity, and the absorption liquid falls into the concentrated liquid area 312 through the filtering unit 4. Particle impurities on the filter plate 410 are continuously increased, the push plate 421 connected with the telescopic end of the telescopic cylinder 420 pushes out the impurities on the filter plate 410 into the filter residue receiving tank 430 by starting the telescopic cylinder 420, so that the filter holes of the filter plate 410 are timely recovered to be in a filtering state, the filter plate 410 is prevented from being blocked, and further continuous treatment of smoke is guaranteed.

By opening and closing the telescopic cylinder 420 at regular time, manual operation is reduced, and the automation degree of device operation is improved.

Optionally, the connection part of the telescopic cylinder 420 and the side wall of the box body 1 is connected through flexible sealing.

Specifically, the arrangement can avoid the leakage of the flue gas from the connection part of the telescopic cylinder 420 and the side wall of the box body 1, and improve the stability and the safety of the operation of the device. Such as flexible sealant, rubber sealing rings, silica gel sealing rings and the like.

As shown in fig. 2, optionally, a filter press 440 is also connected to the filter cake receiving tank 430, and the liquid outlet of the filter press 440 is in communication with the clear liquid zone 313.

Specifically, the filter residue receiving tank 430 receives the impurities from the filter plate 410 and contains larger water, the impurities are subjected to filter pressing through the filter press 440, the obtained filtrate is returned to the clear liquid area 313 and is continuously used as the absorption liquid sequentially, the usage amount of the absorption liquid can be greatly saved in the treatment process of a large amount of flue gas in a factory, the treatment of wastewater is reduced, and meanwhile, the enterprise cost is reduced.

As shown in fig. 3 and 4, optionally, an adsorption unit is disposed above the spraying unit 3 in the case 1, the adsorption unit includes an activated carbon filter screen 510, a re-cooling pipe 520, and a refrigerator 530, the periphery of the activated carbon filter screen 510 is connected with the inner wall of the case 1, and the re-cooling pipe 520 penetrates through the inside of the activated carbon filter screen 510 and is arranged in a curve;

The heat exchange medium inlet end of the recooling pipe 520 is communicated with the outlet of the refrigerator 530, and the heat exchange medium outlet end of the recooling pipe 520 is communicated with the inlet of the refrigerator 530.

Specifically, the flue gas cooled and removed with particulate matter by the spraying unit 3 continues to rise, and is further purified by the adsorption unit at the upper part of the box 1 and then discharged from the air outlet 120. The adsorption unit comprises an active carbon filter screen plate 510, a sub-cooling pipe 520 and a refrigerator 530, wherein the active carbon filter screen plate 510 is used for re-adsorbing fine particles in the flue gas and adsorbing pollutants such as fine particles therein so as to achieve the effect of further purification. The recooling pipe 520 is a curved pipeline with a heat exchange medium inlet end and a heat exchange medium outlet end, the recooling pipe 520 is positioned in the activated carbon filter screen plate 510 and penetrates through the activated carbon filter screen plate 510, the refrigerator 530 conveys the heat exchange medium into the recooling pipe 520, when the flue gas passes through the adsorption unit, impurities in the flue gas are adsorbed again by the activated carbon filter screen plate 510, and meanwhile, the flue gas exchanges heat with the heat exchange medium in the recooling pipe 520, so that the flue gas is further cooled, the temperature and the impurity content during the discharge of the flue gas are greatly reduced, and the pollution of the flue gas to the surrounding environment is avoided.

Meanwhile, since the re-cooling pipe 520 is positioned in the activated carbon filter screen 510, the activated carbon filter screen 510 can be used as a heat dissipation medium of the re-cooling pipe 520, and the cooling efficiency of the flue gas is improved.

Wherein the heat exchange medium is chilled water, air, etc.

As shown in fig. 3 and 4, optionally, a pre-cooling pipe 610 is arranged at the periphery of the flue gas inlet pipe 2, and a pre-cooling cavity 620 is formed by the inner wall of the pre-cooling pipe 610 and the outer wall of the flue gas inlet pipe 2;

the heat exchange medium outlet end of the recooling pipe 520 is communicated with the inlet of the pre-cooling pipe 610, and the outlet of the pre-cooling pipe 610 is communicated with the inlet of the refrigerator 530.

Specifically, after the heat exchange medium from the refrigerator 530 exchanges heat through the recooling pipe 520, the heat exchange medium from the recooling pipe 520 enters the inlet of the pre-cooling pipe 610, exchanges heat with the flue gas from the flue gas inlet pipe 2 in the pre-cooling cavity 620, and pre-cools the flue gas before entering the box 1, thereby further improving the treatment efficiency of the flue gas.

As shown in fig. 4, optionally, a suspended matter concentration sensor 360 is disposed within the reservoir 310.

Specifically, the absorption liquid in the concentrated liquid area 312 is continuously recycled and absorbs impurity particles in the flue gas, and as the device operates, the concentration of suspended particles in the absorption liquid in the concentrated liquid area 312 becomes larger and larger, the suspended particle concentration sensor 360 is used for detecting the concentration of suspended particles in the absorption liquid in the concentrated liquid area 312 in real time, and when the indication number of the suspended particle concentration sensor 360 is larger than or equal to a preset value, the absorption liquid in the reservoir 310 is replaced so as to ensure efficient treatment of the flue gas.

The technical scheme of the application is illustrated in detail by specific examples.

In this embodiment, the operation flow of the flue gas particulate processing apparatus during specific operation is as follows:

The flue gas in the operation of the graphitization furnace is conveyed into the box body 1 through the flue gas inlet pipe 2, the flue gas moves from bottom to top in the box body 1, when passing through the filtering unit 4, the filtering plate 410 filters larger particles in the flue gas, impurities of the large particles fall into the thick liquid area 312 after being filtered, and clear liquid enters the clear liquid area 313 after being filtered by the filtering wall 311 to circularly spray the absorption liquid. The primary trapping of the particle impurities is realized. The flue gas continues to move upwards after passing through the filtering unit 4, the water pump 320 works to provide power, the absorption liquid in the clear liquid area 313 is pumped to the plurality of spraying branched pipes 350 through the spraying pipes 330, and sprayed out by the atomizing nozzle 340 through the plurality of spraying branched pipes 350, the atomized absorption liquid is contacted with the flue gas in the falling process, tiny particles in the flue gas collide with the absorption liquid sprayed out by the spraying unit 3, so that after the particles are continuously gathered and form large particles, the particles fall onto the filter plate 410 under the action of gravity, and the absorption liquid falls into the reservoir 310 through the filter plate 410. And meanwhile, the absorption liquid sprayed out of the atomization spray nozzle 340 cools the flue gas, and absorbs acidic substances in the flue gas, so that the formation of atmospheric pollution or aggravated acid rain caused by the discharge of the acidic substances into the atmosphere along with the flue gas is avoided.

Particle impurities on the filter plate 410 are continuously increased, and impurities on the filter plate 410 are pushed out into the filter residue receiving tank 430 by opening the telescopic cylinder 420 and the push plate 421 connected with the telescopic end of the telescopic cylinder 420, so that the filter holes of the filter plate 410 are timely recovered to be in a filtering state, and the filter plate 410 is prevented from being blocked. When the indication of the suspended matter concentration sensor 360 is greater than or equal to a preset value, the absorption liquid in the reservoir 310 is replaced to ensure efficient treatment of the flue gas.

The flue gas after cooling and dedusting by the spraying unit 3 continuously rises, meanwhile, the refrigerator 530 conveys a heat exchange medium into the sub-cooling pipe 520, and when the flue gas passes through the adsorption unit, the activated carbon filter screen plate 510 adsorbs the flue gas again to adsorb pollutants such as fine particles and the like. At the same time, the flue gas exchanges heat with the heat exchange medium in the sub-cooling pipe 520, and the flue gas is further cooled. After heat exchange is carried out by the recooling pipe 520, the heat exchange medium enters the inlet of the pre-cooling pipe 610 from the heat exchange medium outlet end of the recooling pipe 520, and exchanges heat with the flue gas in the pre-cooling cavity 620, and pre-cools the flue gas before entering the box body 1, so that the treatment efficiency of the flue gas is further improved. Finally, the heat exchange medium is returned to the refrigerator 530 from the outlet of the pre-cooling pipe 610 for re-refrigeration.

The flue gas continues to move to the top of the cabinet 1 and is discharged through the air outlet 120.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not deviate the essence of the corresponding technical solution from the scope of the technical solution of the embodiments of the present application.

Claims (7)

1. The flue gas particulate treatment device is characterized by comprising a box body (1), a spraying unit (3) and a filtering unit (4), wherein an air inlet (110) at the lower part of the box body (1) is communicated with smoke exhaust equipment through a flue gas inlet pipe (2), and an air outlet (120) is formed in the top of the box body (1);

The spraying unit (3) comprises a water storage tank (310), a water pump (320), a spraying pipe (330) and an atomizing nozzle (340), wherein the water storage tank (310) is positioned below the box body (1) and is communicated with the box body (1), one end of the spraying pipe (330) is communicated with the water storage tank (310) through the water pump (320), the other end of the spraying pipe (330) is respectively communicated with a plurality of spraying branched pipes (350), a plurality of spraying branched pipes (350) horizontally extend into the box body (1), and a plurality of atomizing nozzles (340) are connected to the bottom of the spraying branched pipes (350);

A filter wall (311) is vertically arranged in the reservoir (310) and close to the water pump (320), the reservoir (310) is divided into a concentrated solution area (312) and a clear solution area (313) by the filter wall (311), and one end of the spray pipe (330) far away from the atomizing nozzle (340) is communicated with the clear solution area (313);

The filtering unit (4) is arranged in the box body (1) and is positioned between the air inlet (110) and the atomizing nozzle (340).

2. The flue gas particulate processing device according to claim 1, wherein the filter unit (4) comprises a filter plate (410), a telescopic cylinder (420) and a filter residue receiving tank (430), the filter plate (410) is obliquely arranged in the box (1), a fixed end of the telescopic cylinder (420) is positioned at the outer side of the box (1) connected with the higher end of the filter plate (410), a push plate (421) is connected with the telescopic end of the telescopic cylinder (420), the push plate (421) extends into the box (1) along the oblique direction of the filter plate (410), the bottom of the push plate (421) is in contact with the plate surface of the filter plate (410), and the filter residue receiving tank (430) is arranged at the lower end of the filter plate (410).

3. The flue gas particulate treatment device according to claim 2, wherein the telescopic cylinder (420) is connected with the side wall of the box (1) by a flexible seal.

4. The flue gas particulate treatment device according to claim 2, wherein the filter cake receiving tank (430) is further connected with a filter press (440), a liquid outlet of the filter press (440) being in communication with the clean liquid zone (313).

5. The flue gas particulate treatment device according to claim 1, wherein an adsorption unit is arranged above the spraying unit (3) in the box body (1), the adsorption unit comprises an activated carbon filter screen plate (510), a recooling pipe (520) and a refrigerator (530), the periphery of the activated carbon filter screen plate (510) is connected with the inner wall of the box body (1), and the recooling pipe (520) penetrates through the inside of the activated carbon filter screen plate (510) and is arranged in a curve;

The heat exchange medium inlet end of the sub-cooling pipe (520) is communicated with the outlet of the refrigerator (530), and the heat exchange medium outlet end of the sub-cooling pipe (520) is communicated with the inlet of the refrigerator (530).

6. The flue gas particulate treatment device according to claim 5, wherein a pre-cooling pipe (610) is arranged at the periphery of the flue gas inlet pipe (2), and a pre-cooling cavity (620) is formed by the inner wall of the pre-cooling pipe (610) and the outer wall of the flue gas inlet pipe (2);

The outlet end of the heat exchange medium of the sub-cooling pipe (520) is communicated with the inlet of the pre-cooling pipe (610), and the outlet of the pre-cooling pipe (610) is communicated with the inlet of the refrigerator (530).

7. The flue gas particulate treatment device of any one of claims 1-6, wherein a suspended matter concentration sensor (360) is disposed within the concentrate zone (312).