CN114504915A

CN114504915A - Ultralow-emission efficient wet dust removal system and process

Info

Publication number: CN114504915A
Application number: CN202210116124.0A
Authority: CN
Inventors: 董炳红
Original assignee: Shandong Ruilong Environmental Protection Technology Co ltd
Current assignee: Shandong Ruilong Environmental Protection Technology Co ltd
Priority date: 2022-02-07
Filing date: 2022-02-07
Publication date: 2022-05-17

Abstract

The invention discloses an ultra-low emission high-efficiency wet dust removal system and a process, which relate to the technical field of flue gas dust removal and comprise an air inlet pipeline, an air outlet pipeline and a plurality of dehumidification bodies, wherein the plurality of dehumidification bodies are arranged between the air inlet pipeline and the air outlet pipeline in parallel, each dehumidification body comprises a support, a basic water tank, a cylinder, and an impact emulsification unit, a spraying unit and a rotational flow sub-group unit which are sequentially arranged in the cylinder from bottom to top, the support is of a profile frame structure, the basic water tank is arranged in the support, the cylinder is arranged above the support, the lower end of the cylinder extends into the basic water tank, the lower part of the cylinder is communicated with the air inlet pipeline, and the upper end of the cylinder is communicated with the air outlet pipeline. According to the invention, the dust-containing flue gas is subjected to three-stage dust removal through the dehumidification body, so that the dust content in the discharged flue gas meets the national ultra-low emission standard, the whole system structure is reasonable in layout, the operation is stable, the use safety is high, the energy is saved, the environment is protected, and the practicability is strong.

Description

Ultralow-emission efficient wet dust removal system and process

Technical Field

The invention relates to the technical field of flue gas dust removal, in particular to an ultra-low emission efficient wet dust removal system and a process.

Background

The high-humidity waste gas generated in post stations such as a steel plant sintering and mixing system, a steel rolling wire, steel slag treatment and the like contains a large amount of dust, the treatment of the dust-containing high-humidity waste gas is always a difficult problem in the industry, the dust-containing high-humidity waste gas is diffused in a workshop, not only irreversible erosion and damage are caused to electrical equipment, but also causes harm to the health of technical workers at each post, does not meet the industrial hygiene standard, and along with the gradual contraction of environmental protection policy, the dust in the dust-containing high-humidity waste gas needs to be collected and treated to meet the standard requirement of ultralow emission, the existing traditional dry dust removal system is not suitable for a high-humidity working condition, the traditional wet dust remover cannot meet the standard requirement of ultralow emission, and the wet electric dust remover capable of achieving ultralow emission cannot meet the high inlet dust concentration, so that the research and development of an ultralow-emission high-efficiency wet dust removal system are needed.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an ultra-low emission high-efficiency wet dust removal system and process.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a high-efficient wet dedusting system of ultralow emission, including the intake stack, air-out pipeline and a plurality of bodies that dehumidify, a plurality of bodies that dehumidify set up between intake stack and air-out pipeline in parallel, the body that dehumidifies includes the support, basic pond, the barrel sets gradually the impact emulsification unit inside the barrel from bottom to top, spray unit and whirl subunit unit, the support is section bar frame construction, the basic pond sets up inside the support, the barrel sets up in the support top, and its lower extreme extends to in the basic pond, barrel lower part and intake stack intercommunication, barrel upper end and air-out pipeline intercommunication.

Adopt above-mentioned structure, will contain the leading-in a plurality of dehumidification of dirt flue gas through the intake stack, can satisfy the operation requirement of high entry concentration, utilize the dehumidification body of drying to carry out tertiary dust removal to the dirt flue gas, make the emission concentration of flue gas satisfy national ultralow emission standard to collect the emission by air-out pipeline is unified, make inside high wet waste gas in workshop and dust obtain effectual collection and administer, overall design is reasonable, simple structure, and the suitability is strong.

Preferably, the impact emulsification unit comprises an air inlet elbow and an air distribution balancing weight, one end of the air inlet elbow is arranged inside the barrel and located above the liquid level of the basic water tank, the other end of the air inlet elbow extends out of the barrel and is detachably connected with an air inlet pipeline, the air distribution balancing weight is arranged inside the lower end of the barrel, the air distribution balancing weight is in an inverted cone shape, the cone shape of the air distribution balancing weight extends upwards to the air inlet elbow, the air inlet elbow is used for guiding the dust-containing flue gas to the liquid level of the basic water tank at a certain speed, impact emulsification is generated between the dust-containing flue gas and the liquid level, a large amount of spray and liquid drops are formed, the dust-containing flue gas is fully contacted with the spray and the liquid drops, and 50-60% of dust in the dust-containing flue gas is captured and enters the basic water tank.

Preferably, the unit that sprays includes spray coil and grid, spray coil one end is passed the barrel and is stretched out outside, be provided with a plurality of spiral spray nozzle on the spray coil of barrel inside, the setting can be dismantled on the barrel to the grid, and be located the spray coil below, be provided with the bleeder on the spray coil, adopt spray coil and spiral spray nozzle, carry out secondary washing to dusty flue gas and filter, get rid of 30% dust in the dusty flue gas, adopt the grid to carry out the deceleration and divide the wind to flow equalize to dusty flue gas, it is more abundant to make dusty flue gas and spiral spray nozzle spun water smoke merge.

Preferably, the cyclone sub-group unit comprises a plurality of cyclone sub-pieces which are closely arranged, each cyclone sub-piece comprises an outer barrel, a spray pipe and a plurality of spiral oblique blades, the upper end and the lower end of each outer barrel can be detachably arranged on the supporting plate, the spiral oblique blades are arranged inside the outer barrel at intervals, the spray pipe is vertically arranged in the center of the outer barrel and sequentially penetrates through the spiral oblique blades, the spray pipe is communicated with the branch pipes through a pipeline, the cyclone sub-pieces are used for spraying dust removal and cyclone dust removal on dust-containing smoke, the spray pipes are used for spraying water mist to increase the liquid-gas ratio, so that the water mist and dust are mixed, the spiral oblique blades are used for generating cyclone, the mixed dust-containing water mist is separated from the smoke, and under the action of centrifugal force of cyclone and water film adsorption, the dust is separated.

Preferably, an organic whole is provided with the air outlet on the barrel, and the air outlet is the horn mouth form, and the air outlet passes through pipeline and air-out pipeline intercommunication, adopts the binding off formula structure of air outlet horn mouth form, and when the flue gas discharged to the air-out pipeline through the air outlet from the barrel, further deviate from the moisture in the flue gas, reach the effect of eliminating white cigarette.

Preferably, the bottom of the basic water pool is provided with a liquid discharge pipe, the liquid discharge pipe is provided with an electric valve bank, and when the system fails, water in the basic water pool can be discharged through the liquid discharge pipe by opening the electric valve bank.

Preferably, the dehumidification body of wetting still includes accident pond, and accident pond sets up below the terrace, and is located the below in basic pond, and the fluid-discharge tube downwardly extending is in accident pond, when the system breaks down, adopts accident pond as interim storage space, makes things convenient for the maintenance of system.

Preferably, an ultra-low discharge high-efficient wet dedusting system still includes balanced pond, and balanced pond passes through the pump package and communicates with a plurality of basic ponds respectively, all is provided with the ultrasonic wave level gauge on basic pond and the balanced pond, adopts balanced pond and pump package to maintain the balance of water level in the basic pond, guarantees the system and normally operates, adopts the height of the water level in ultrasonic wave level gauge monitoring balanced pond and the basic pond.

Preferably, be provided with the washing unit on the intake stack, the washing unit includes flushing header and a plurality of washing unit, a plurality of washing unit intervals set up on the intake stack, flushing header and a plurality of washing unit are through washing the branch pipe intercommunication, the washing unit is including washing support and washing terminals, it sets firmly at the intake stack surface to wash the support, washing terminals can dismantle the setting and wash on the support, and stretch into inside the intake stack, it is provided with the ball valve to be close to washing support department on the branch pipe to wash, ball valve and washing terminals pass through the hose intercommunication, adopt the washing unit to wash the intake stack is inside, prevent that the dust from at air pipe inner wall deposit, improve the flue gas and pass through efficiency.

An ultra-low emission high-efficiency wet dust removal process, which adopts the ultra-low emission high-efficiency wet dust removal system, comprises:

s1, introducing dust-containing flue gas from an air inlet elbow at a speed of 12-15m/s, impacting the liquid surface of a basic water tank for emulsification to form a large amount of droplets and droplets, fully contacting the flue gas with the droplets and 50-60% of dust and water gas in the dust-containing flue gas into the basic water tank;

s2, spraying water mist by the spraying coil pipe and the spiral nozzle, mixing the dust-containing smoke with the water mist, washing and filtering the dust-containing smoke for the second time, and enabling 30% of dust and water vapor in the dust-containing smoke to enter a basic water tank;

s3, the cyclone sub-part sprays and cyclone-combined removes dust for the dust-containing smoke, the water mist and the dust are mixed by spraying and removing dust, the mixed dust-containing water mist is separated from the smoke by cyclone dust removal, the dust is separated under the action of cyclone centrifugal force and water film adsorption, and then the dust flows downwards into a basic water pool under the action of gravity;

and S4, discharging the dedusted flue gas into an air outlet pipeline through an air outlet.

In conclusion, the dust-containing flue gas is subjected to three-stage dust removal through the dehumidification body, so that the dust content in the discharged flue gas meets the national ultra-low emission standard (< 5 mg/Nm) and the processing capacity is high, the single-cylinder processing capacity can reach 15-18 ten thousand cubic meters/h, the whole system is reasonable in structural layout, stable in operation, high in use safety, energy-saving, environment-friendly and high in practicability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a dehumidifying body according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1A;

FIG. 4 is an enlarged view of a portion of FIG. 2B;

FIG. 5 is a schematic cross-sectional view of FIG. 2 illustrating the cross-sectional structure of the present invention;

FIG. 6 is a schematic view of the cyclone piece construction of the present invention.

In the figure: 1. an air inlet pipeline; 2. an air outlet pipeline; 3. a balance water tank; 4. a pump group; 5. an ultrasonic liquid level meter; 6. a support; 7. a basic pool; 8. a barrel; 9. an air inlet elbow; 10. a wind distributing balancing weight; 11. spraying a coil pipe; 12. a grid; 13. a spiral spray head; 14. a branch pipe; 15. a swirl element; 16. an outer cylinder; 17. a shower pipe; 18. a helical pitched blade; 19. a liquid discharge pipe; 20. an electric valve bank; 21. an accident pool; 22. a flush tube; 23. washing the spray head; 24. a blow-off pipe; 25. a ball valve; 26. and (7) air outlet.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.

Referring to fig. 1-6, an ultra-low emission high-efficiency wet dust removal system comprises an air inlet pipeline 1, an air outlet pipeline 2, a balance water tank 3 and a plurality of dehumidifying bodies, wherein the dehumidifying bodies are connected in parallel and are respectively communicated with the air inlet pipeline 1 and the air outlet pipeline 2 through pipelines, the air inlet pipeline 1 is used for guiding dust-containing flue gas into the dehumidifying bodies, the dust-containing flue gas is uniformly discharged through an air outlet pipeline after being dedusted by the dehumidifying bodies, the dehumidifying bodies comprise a bracket 6, a basic water tank 7 and a cylinder 8, the bracket 6 is a steel structure formed by welding sectional materials or is installed on a floor surface by adopting expansion bolts or pouring, the strength is high, the use stability is strong, the basic water tank 7 is installed inside the bracket 6 and is positioned below the cylinder 8, the cylinder 8 is made of glass fiber reinforced plastic material, the strength is high, corrosion resistant and stable, the cylinder 8 is installed on the upper end surface of the bracket 6 by bolts, the lower end of the cylinder body 8 extends downwards into the basic water tank 7, the inside of the cylinder body 8 is sequentially provided with an impact emulsification unit, a spraying unit and a cyclone sub-group unit from bottom to top for carrying out three-stage dust removal on dust-containing flue gas, the upper end of the cylinder body 8 is integrally provided with an air outlet 26, the air outlet 26 is processed into a bell mouth shape, the moisture contained in the flue gas is further removed through a closing structure of the bell mouth of the air outlet 26 to achieve the effect of eliminating the white smoke gas discharged, the air outlet 26 is communicated with an air outlet pipeline 2 through a pipeline and is uniformly discharged by the air outlet pipeline 2, the balance water tank 3 is communicated with a plurality of basic water tanks 7 through a pump group 4, the basic water tanks 7 and the balance water tank 3 are both provided with ultrasonic liquid level meters 5, the water levels in the balance water tanks 3 and the basic water tanks 7 are monitored through the ultrasonic liquid level meters 5, and the balance water level in the basic water tanks 7 is maintained by the balance water tanks 3 and the pump group 4, and a liquid discharge pipe 19 is welded at the bottom of the basic water tank 7, and an electric valve bank 20 is arranged on the liquid discharge pipe 19.

Adopt above-mentioned structure, through intake stack 1 with the leading-in a plurality of dehumidification of dirty flue gas in, can satisfy the operation requirement of high entry concentration, utilize the dehumidification body of moisturizing to carry out tertiary dust removal to dirty + flue gas, make the emission concentration of flue gas satisfy national ultra-low emission standard, and collect the emission by air-out pipeline 2 is unified, make inside high wet waste gas in workshop and dust obtain effectual collection and administer, overall design is reasonable, simple structure, the suitability is strong.

Referring to fig. 1-6, the impact emulsification unit includes an air inlet elbow 9 and an air distribution counter weight 10, one end of the air inlet elbow 9 is located inside the cylinder 8 and extends downward to above the liquid level of the basic pool 7, the other end of the air inlet elbow 9 extends out of the cylinder 8 and is connected with the air inlet pipe 1 through a pipeline, the air distribution counter weight 10 is installed inside the lower end of the cylinder 8 and is used for adding a counter weight to the cylinder 8, reducing the center of the cylinder 8 and enhancing the stability of the cylinder 8, the air distribution counter weight 10 is in an inverted cone structure, the cone of the air distribution counter weight 10 extends upward into the air inlet elbow 9, the dust-containing flue gas in the air inlet pipe 1 is guided into the cylinder 8 by the air inlet elbow 9 at a certain speed and flows through the inverted cone of the air distribution counter weight 10 to impact the liquid level of the basic pool 7, so that impact emulsification is generated between the dust-containing flue gas and the liquid level to form a large amount of droplets, the dust-containing flue gas is fully contacted with the droplets and the droplets, and 50-60% of dust in the dust-containing flue gas is captured and enters the basic water tank 7.

Referring to fig. 1-6, the spraying unit includes a spraying coil 11 and a grid 12, one end of the spraying coil 11 passes through the cylinder 8 and extends out, and is connected with an external water source, a plurality of spiral spray nozzles 13 are installed on the spraying coil 11 inside the cylinder 8, the grid 12 is installed on the cylinder 8 and is located below the spraying coil 11, a branch pipe 14 is connected to the spraying coil 11 through a connecting flange, water is supplied to the spraying coil 11 from the external water source, and is atomized and sprayed by the spiral spray nozzles 13, secondary washing and filtering are performed on the dusty flue gas, 30% of dust in the dusty flue gas can be removed, the grid 12 is adopted to reduce the speed and distribute the air flow, and the water mist sprayed by the dusty flue gas and the spiral spray nozzles 13 is more fully fused.

Referring to fig. 1-6, the cyclone sub-group unit comprises a plurality of closely arranged cyclone sub-members 15, the cyclone sub-members 15 comprise an outer cylinder 16, a spray pipe 17 and a plurality of helical inclined blades 18, the upper and lower ends of the outer cylinder 16 are both bolted to the cylinder 8, the helical inclined blades 18 are installed inside the outer cylinder 16 at intervals, the spray pipe 17 is vertically installed at the central position of the outer cylinder 16 and sequentially passes through the helical inclined blades 18, the spray pipe 17 is communicated with a branch pipe 14 through a pipeline, water is supplied to the spray pipe 17 by the branch pipe 14, the cyclone sub-members 15 are used for sequentially performing spray dust removal, cyclone dust removal, spray dust removal, cyclone dust removal and cyclone dust removal on the dust-containing flue gas, the spray pipe 17 is used for spraying water mist to increase the liquid-gas ratio, so that the water mist and dust are mixed, the helical inclined blades 18 are used for generating cyclone, the mixed dust-containing water mist is separated from the cyclone flue gas, under the action of centrifugal force and water film adsorption, separating the dust.

Referring to fig. 1-6, the dehumidification body still includes accident pond 21, and accident pond 21 adopts the subside formula mode, installs below the terrace, and is located the below of basic pond 7, and fluid-discharge tube 19 downwardly extending is to in the accident pond 21, and when the system broke down, can open electronic valves 20 and discharge into accident pond 21 with the interior dust-laden liquid of basic pond 7, and temporary storage conveniently maintains the system.

Referring to fig. 1-6, a flushing unit is installed on an air inlet pipe 1, the flushing unit includes a flushing header 22 and a plurality of flushing units, the flushing header 22 is installed on the air inlet pipe 1 through a pipe clamp, the plurality of flushing units are installed on the air inlet pipe 1 at intervals, the flushing header 22 and the plurality of flushing units are communicated with each other through flushing branch pipes 23, the flushing header 22 is communicated with an external water source, water is supplied to the flushing unit through the flushing branch pipes 23, the flushing unit includes a flushing support 24 and a flushing nozzle 25, the flushing support 24 is welded on the outer surface of the air inlet pipe 1, the flushing nozzle 25 is installed on the flushing support 24 and extends into the air inlet pipe 1, a ball valve 27 is installed on the flushing branch pipe 23 and close to the flushing support 24, the ball valve 27 is communicated with the flushing nozzle 25 through a hose, and the flushing nozzle 25 sprays and flushes the interior of the air inlet pipe 1 by opening the ball valve 27, prevent the dust at the inner wall deposit of air inlet pipe 1, improve the efficiency of passing through of dirt-laden flue gas, the sewage that produces after the washing discharges to outside sewage pond in.

The working principle is as follows: when the dust-containing flue gas collecting device is used, the dust-containing flue gas in the air inlet pipeline 1 is guided into the liquid level position of the basic water tank 7 at the speed of 12-15m/s by the air inlet elbow 9, and is subjected to flow division by the conical surface of the air distribution balancing weight 10 to impact the liquid level to form a large amount of spray and liquid drops, and 50-60% of dust and water gas in the flue gas are captured and enter the basic water tank 7 through full contact of the flue gas and the spray and liquid drops;

the spraying coil pipe 11 is communicated with an external water source, the external water source supplies water to the spraying coil pipe 11, the water is atomized and sprayed out by the spiral spray nozzle 13, the smoke rises in the cylinder 8 and is mixed with water mist after being subjected to speed reduction and flow division by the grating 12, the water mist carries out secondary washing and filtration on the smoke containing dust, and 30% of dust and water gas in the smoke are captured and enter the basic water tank 7;

the flue gas upwards gets into whirl sub-spare 15, and the quantity of arranging of whirl sub-spare 15 is decided according to the flue gas volume of pending, and shower 17 of whirl sub-spare 15 is supplied water by bleeder 14, sprays the dust removal to dusty flue gas to cooperation spiral oblique blade 18's whirl removes dust, carries out the third level to dusty flue gas and removes dust, and the flue gas dusty concentration after the dust removal < 5mg/Nm year, reaches the ultralow emission requirement, discharges by air outlet 26 unified emission in the air-out pipeline 2.

It should be noted that the pump unit 4, the ultrasonic level gauge 5, the spiral nozzle 13, the electric valve set 20, the flushing nozzle 25, the ball valve 27, the connecting flange, the pipe clamp, the hose and the bolt in the embodiment of the present invention are all prior art applications.

In the description of this patent, it is to be understood that the terms "upper," "lower," "inner," "outer," "center," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the patent.

In this patent, unless expressly stated or limited otherwise, the terms "combined," "disposed," "connected," "secured," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, releasably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate, or they may be connected internally or in an interactive relationship with each other, and unless otherwise specifically limited, the specific meaning of the above terms in this patent will be understood by those skilled in the art according to the specific circumstances.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an ultra-low discharges high-efficient wet dedusting system which characterized in that: including intake stack (1), air-out pipeline (2) and a plurality of dehumidification body, a plurality of dehumidification bodies are parallelly connected to be set up between intake stack (1) and air-out pipeline (2), the dehumidification body includes support (6), basic pond (7), barrel (8) and from bottom to top sets gradually the inside impact emulsification unit of barrel (8), spray unit and whirl subunit unit, support (6) are section bar frame structure, basic pond (7) set up inside support (6), barrel (8) set up in support (6) top, and its lower extreme extends to in basic pond (7), barrel (8) lower part and intake stack (1) intercommunication, barrel (8) upper end and air-out pipeline (2) intercommunication.

2. The ultra-low emission high efficiency wet scrubbing system of claim 1, wherein: strike emulsification unit and include air inlet elbow (9) and branch wind balancing weight (10), air inlet elbow (9) one end sets up inside barrel (8), and is located the liquid level top in basic pond (7), and the air inlet elbow (9) other end stretches out barrel (8) outer and can dismantle with intake stack (1) and be connected, divide wind balancing weight (10) to set up in the inside of barrel (8) lower extreme, divide wind balancing weight (10) to be the back taper, and its toper upwards extends to in air inlet elbow (9).

3. The ultra-low emission high efficiency wet scrubbing system of claim 2, wherein: the spray unit comprises a spray coil (11) and a grid (12), one end of the spray coil (11) penetrates through the barrel (8) and extends out, a plurality of spiral spray nozzles (13) are arranged on the spray coil (11) inside the barrel (8), the grid (12) can be detachably arranged on the barrel (8) and is located below the spray coil (11), and a branch pipe (14) is arranged on the spray coil (11).

4. The ultra-low emission high efficiency wet scrubbing system of claim 3, wherein: the cyclone sub-group unit comprises a plurality of cyclone sub-parts (15) which are closely arranged, each cyclone sub-part (15) comprises an outer barrel (16), a spraying pipe (17) and a plurality of spiral oblique blades (18), the upper end and the lower end of each outer barrel (16) can be detachably arranged on the corresponding barrel (8), the spiral oblique blades (18) are arranged inside the outer barrel (16) at intervals, the spraying pipe (17) is vertically arranged at the center of the outer barrel (16) and sequentially penetrates through the spiral oblique blades (18), and the spraying pipe (17) is communicated with the branch pipes (14) through pipelines.

5. The ultra-low emission high efficiency wet scrubbing system of claim 4, wherein: the air outlet (26) is integrally arranged at the upper end of the barrel body (8), the air outlet (26) is in a horn mouth shape, and the air outlet (26) is communicated with the air outlet pipeline (2) through a pipeline.

6. The ultra-low emission high efficiency wet scrubbing system of claim 5, wherein: a liquid discharge pipe (19) is arranged at the bottom of the basic water pool (7), and an electric valve group (20) is arranged on the liquid discharge pipe (19).

7. The ultra-low emission high efficiency wet scrubbing system of claim 6, wherein: the dehumidification body still includes accident pond (21), accident pond (21) set up below the terrace, and are located the below of basic pond (7), fluid-discharge tube (19) downwardly extending is to in accident pond (21).

8. The ultra-low emission high efficiency wet scrubbing system of claim 7, wherein: still include balance pool (3), balance pool (3) are through pump package (4) respectively with a plurality of basic pond (7) intercommunication, all be provided with ultrasonic wave level gauge (5) on basic pond (7) and balance pool (3).

9. The ultra-low emission high efficiency wet scrubbing system of claim 8, wherein: be provided with on air-supply line (1) and wash the unit, wash the unit including washing house steward (22) and a plurality of unit of washing, a plurality of unit intervals of washing set up on air-supply line (1), wash house steward (22) and a plurality of unit of washing through washing branch pipe (23) intercommunication, wash the unit including washing support (24) and washing shower nozzle (25), wash support (24) and set firmly at air-supply line (1) surface, washing shower nozzle (25) can be dismantled and set up on washing support (24), and stretch into inside air-supply line (1), it is provided with ball valve (27) to be close to on branch pipe (23) and wash support (24), ball valve (27) and washing shower nozzle (25) pass through the hose intercommunication.

10. An ultra-low emission high-efficiency wet dust removal process is characterized in that: the ultra-low emission high efficiency wet scrubbing system of claim 9, comprising: s1, introducing dust-containing flue gas from an air inlet elbow (9) at a speed of 12-15m/s, impacting the liquid surface of a basic water tank (7) for emulsification to form a large amount of droplets and droplets, fully contacting the flue gas with the droplets and 50-60% of dust and water gas in the dust-containing flue gas into the basic water tank (7); s2, spraying water mist by using a spraying coil pipe (11) and a spiral nozzle (13), mixing dust-containing smoke with the water mist, washing and filtering the dust-containing smoke for the second time, and enabling 30% of dust and water vapor in the dust-containing smoke to enter a basic water tank (7); s3, the cyclone sub-piece (15) sprays and cyclone-combined dedusting on the dust-containing flue gas, water mist and dust are mixed by spraying and dedusting, the mixed dust-containing water mist is separated from the flue gas by cyclone dedusting, the dust is separated under the action of cyclone centrifugal force and water film adsorption, and then the dust flows downwards into the basic water pool (7) under the action of gravity; and S4, discharging the dedusted flue gas into an air outlet pipeline (2) through an air outlet (26).