KR102001655B1 - High Eefficiency Wet Scrubber - Google Patents

Abstract

The present invention relates to a high efficiency wet scrubber which can improve reaction efficiency of the reaction solution and exhaust gas while facilitating design of a supply unit for supplying a reaction solution. The high efficiency wet scrubber of the present invention includes: a cylindrical main body; an exhaust gas inlet which is formed to penetrate a side surface of the main body, and in which exhaust gas flows; an exhaust gas outlet which is positioned in the top portion of the main body and allows the exhaust gas to be discharged to the outside; a plurality of supply pipes which are positioned in a gas-liquid reaction unit within the main body and vertically spaced apart from one another at predetermined intervals to spray the reaction solution in a downward direction; a first perforated plate which is installed between the plurality of supply pipes and a reaction tank such that the exhaust gas flown in through the inlet is primarily distributed and flown; and a second perforated plate which is installed among the plurality of supply pipes such that the exhaust gas passing through the first perforated plate is secondly distributed and flown. The plurality of supply pipes include: a first supply pipe which is installed to be positioned between the first and second perforated plates; a second supply pipe which is installed in an upper side of the second perforated plate; and a third supply pipe which is installed to be separated from the second supply pipe to the upper side of the second supply pipe at predetermined intervals. The first, second and third supply pipes are formed by disposing a plurality of ring-shaped pipes with different diameters in a concentric shape, and a plurality of nozzles are installed on the bottom portion of the pipes to be spaced apart from one another at predetermined intervals.

Description

High Efficiency Wet Scrubber < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wet scrubber for efficiently removing contaminants of exhaust gas generated by combustion of fossil fuels in various power plants and steel mills, and more particularly to a wet scrubber for removing exhaust gas, (Hereinafter referred to as " reaction liquid ") to remove toxic substances contained in the exhaust gas.

Generally, a dust collector is a device for collecting and removing solid or liquid fine particles contained in a gas, and was first used to remove particulate matter contained in the combustion gas of the boiler. In recent years, however, ) To prevent the release of harmful substances into the atmosphere.

Such a dust collector is variously carried out according to a method of removing harmful substances contained in exhaust gas such as by gravity, by filtration, by inertia and centrifugal force, by using sound waves, by washing, and the like.

Among these, scrubbing dust collectors are called scrubber. These scrubbers are widely used for air cleaning in general factories, theaters, etc. other than chemical plants, and they are roughly classified into dry type and wet type, and wet scrubber is compared with dry scrubber It is known that the removal efficiency of harmful substances is relatively higher.

As a conventional technique of the above-described wet scrubber, a highly efficient multistage eddy-current type wet scrubber (hereinafter referred to as "Patent Document") of Patent Publication No. 1827121 is disclosed.

The wet scrubber of the patent document comprises a tubular body; A first chamber installed at one side of the main body to receive the first cleaning liquid; A second chamber installed on the other side of the main body so as to be separated from the first chamber and accommodating the second cleaning liquid; A chamber separator installed vertically to separate the first chamber and the second chamber; An inlet port connected to the first chamber on one side wall of the main body and through which a gas flow containing air pollutants flows; At least one cleaning liquid ejection opening provided at an upper portion of the first chamber and higher than the inlet, for ejecting the first cleaning liquid; A first collision plate installed between the chamber separation plate and the inlet port in a vertical direction so as to face the inlet port; A first nozzle installed on the side of the first impingement plate toward the chamber separation plate; A second impingement plate installed at a side of the chamber separator plate at a position higher than the first nozzle toward the first impingement plate; A third collision plate spaced apart from the upper end of the chamber separator plate and installed laterally so as to be connected to the upper end of the first collision plate; A fourth collision plate which is vertically connected to the third chamber-side end of the third collision plate and is spaced apart from the chamber separation plate; A second nozzle installed on a side surface of the fourth collision plate in a direction of a sidewall of the second chamber side of the main body; A fifth collision plate installed on the other side wall of the body toward the fourth collision plate at a position higher than the second nozzle; A demister filter installed at the top of the body at a position higher than the third impingement plate; An outlet provided at an upper end of the main body; A first cleaning liquid inlet formed on a side wall of the first chamber of the main body; A second cleaning liquid injecting port provided on a sidewall of the second chamber side of the main body; A first cleaning liquid discharge port installed at the bottom of the first chamber side of the main body; A second cleaning liquid discharge port installed at the bottom of the second chamber side of the main body; A first level determining device connected to the first cleaning liquid inlet; And a second level determining device connected to the second cleaning liquid injection port.

However, in the wet scrubber of the patent document, the reaction liquid (cleaning liquid) injection pipes having a predetermined length are provided in a plurality of rows at a predetermined interval inside the cylindrical main body. Therefore, the lengths of the pipes must be designed differently, It is difficult to control the flow rate of the reaction liquid supplied through the pipe in order to uniformly adjust the injection amount of the reaction liquid sprayed through each of the other pipes.

In this case, when the flow rate of the reaction liquid supplied to each pipe is not adjusted differently, the amount of the reaction liquid injected through the pipe becomes uneven, and therefore, in the course of flowing the exhaust gas from the lower portion of the main body to the upper portion, The concentration of the pollutants contained in the exhaust gas is significantly lowered as the concentration of the pollutants in the exhaust gas is reduced.

In addition, a blank portion in which the reaction liquid can not be injected may be formed between the piping installed at a predetermined interval, so that a plurality of pipes are provided so as to have a multi-layer structure, and at the same time, the pipes of each layer are staggered However, in this case, it is difficult to reflect different design conditions for each piping of each layer in order to arrange the piping of each layer in a staggered manner.

In addition to this, the exhaust gas flows irregularly (turbulent flow) due to a pipe or the like installed inside the main body, and therefore, the flow rate of exhaust gas is lowered (flow velocity is lowered) and the energy used for discharging the exhaust gas to the outside of the main body is increased .

Therefore, it is required to develop a wet scrubber that can easily design a piping for spraying a reaction liquid, efficiently remove contaminants contained in the exhaust gas, and can save the energy used by securing the flow rate of the exhaust gas.

KR 10-1827121 B1 (2018. 02. 01.) KR 10-1876413 B1 (2018. 07. 03.) KR 10-1550990 B1 (May 09, 2015) KR 10-1349959 B1 (2014. 01. 03.) KR 10-1277569 B1 (June 17, 2013)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an exhaust gas purifying apparatus which can easily design a pipe for injecting a reaction liquid, can efficiently remove contaminants contained in exhaust gas, And to provide a highly efficient wet scrubber capable of saving the energy used by securing the gas flow rate.

According to an aspect of the present invention, there is provided a high efficiency wet scrubber comprising: a cylindrical body including a gas-liquid reaction part formed on an upper inner side and a reaction tank formed on an inner lower side; An exhaust gas inlet formed to penetrate the side surface of the main body and allowing the exhaust gas to flow into the lower portion of the gas-liquid reaction portion; An exhaust gas outlet which is located above the main body and through which the exhaust gas from which nitrogen oxides and sulfur oxides have been removed is discharged to the outside; A plurality of supply pipes located in the gas-liquid reaction part inside the main body and spraying the reaction solution downward at a predetermined interval up and down; A primary perforated plate installed between the plurality of supply pipes and the reaction tank to distribute and increase the exhaust gas flowing through the inlet; And a secondary perforated plate disposed between the plurality of supply pipes to allow the exhaust gas passing through the primary perforated plate to be distributed and raised in a second order, wherein the plurality of supply pipes are arranged between the first and second perforated plates A first supply pipe installed to be positioned; A second supply pipe installed on an upper side of the secondary sieve plate; And a third supply pipe disposed at a predetermined distance from the upper portion of the second supply pipe, wherein the first, second, and third supply pipes are formed by arranging a plurality of ring-shaped pipes having different diameters concentrically And a plurality of nozzles are installed at a predetermined interval on the lower side of the pipe.

The first and second supply pipes are provided with a hollow cone nozzle for concentrating and spraying the reaction liquid in a peripheral direction relative to the central portion. The second and third supply pipes are provided with a full- Is installed.

According to the present invention, a fourth supply pipe is further provided at an upper portion of the third supply pipe, and the fourth supply pipe is provided with a hollow cone nozzle for concentrating and spraying the reaction liquid relatively to the peripheral portion As a further feature.

In addition, the present invention is characterized in that the nozzles of the first, second, and third supply pipes are installed at different angles so that the reaction liquid is sprayed uniformly throughout the gas-liquid reaction part.

The first and the second perforated plates of the present invention are characterized in that the total area of the channels formed by the holes is 40 to 50% of the total area of the perforated plate.

According to the present invention, since the supply pipe arranged in a concentric circle with a plurality of ring-shaped pipes in the inside of the main body is provided, it can be easily installed inside the cylindrical main body and the nozzle can be easily placed As a result, it is easy to design a wet scrubber.

Further, the flow structure of the exhaust gas can be stabilized in the gas-liquid reaction process due to the arrangement structure of the primary and secondary perforated plates, the full condenser nozzles, and the hollow cone nozzles installed in the main body, thereby ensuring the flow velocity and reactivity of the exhaust gas There is an advantage that the removal efficiency of the harmful substances contained in the exhaust gas is improved and the pressure loss of the exhaust gas is reduced.

1 is a schematic view showing an example of a high-efficiency wet scrubber according to the present invention.
2 is a perspective view showing an example of a supply pipe according to the present invention;
Fig. 3 is a bottom view of Fig. 2; Fig.
4 and 5 are views showing examples of using the hollow cone nozzle according to the present invention.
6 and 7 are views showing examples of use of a full-cone nozzle according to the present invention.
8 (a), (b) and (c) illustrate examples in which the ejection area varies according to the installation angle of the nozzle according to the present invention.
9 is a view showing examples of primary and secondary perforated plates according to the present invention.
10 is a view showing another embodiment of the primary perforated plate according to the present invention.
11 is a view showing another example of a highly efficient wet scrubber according to the present invention.
12 is a view showing an example of a primary perforated plate according to FIG.
13 is a view showing an example of the filter according to Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

An object of the present invention is to provide a highly efficient wet scrubber capable of easily designing piping for spraying a reaction liquid, efficiently removing contaminants contained in the exhaust gas, 1 and 2, the present invention includes a main body 10, an exhaust gas inlet 20, an exhaust gas outlet 30, a supply pipe 40, a primary perforated plate 50, And a perforated plate (60).

The main body 10 is configured such that the exhaust gas flows into the interior of the main body 10 and is reacted with the reaction liquid to remove harmful substances contained in the exhaust gas.

1, a gas-liquid reaction part 11 having a predetermined height is formed on the upper part of the body 10, and a reaction (reaction) dropping down through a supply pipe 40, which will be described later, And a reaction tank 12 in which liquid and harmful substances are collected and stored.

At this time, a reaction liquid supply pipe (not shown) is provided at one side of the reaction tank 12 to supply the reaction liquid to the inside of the reaction tank 12 to adjust its concentration. On the other side, a reaction solution collected and stored in the reaction tank 12 (Not shown) connected to a flow path for discharging the liquid to the outside or to a circulating flow path for supplying the reaction liquid to the supply pipe 40 using a pump (not shown) and circulating the liquid.

The exhaust gas inlet 20 is formed so as to penetrate the side surface of the main body 10 so as to communicate with the lower side of the gas-liquid reaction part 11 and includes an air pollutant such as nitrogen oxides and sulfur oxides inside the main body 10 And the exhaust gas is supplied.

The exhaust gas outlet 30 is configured to communicate with the upper portion of the main body 10 to exhaust the exhaust gas from which pollutants such as nitrogen oxides and sulfur oxides are removed.

1, the exhaust gas outlet 30 is located above the gas-liquid reacting section 11, and on the exhaust gas outlet 30, an exhaust fan 31 ) Can be installed.

The supply pipe 40 is positioned on the gas-liquid reaction part 11 in the main body 10 and is spaced apart from the upper and lower sides by a predetermined distance so that the reaction liquid is sprayed downward so as to make a lean contact suitable for the removal of nitrogen oxides and sulfur oxides contained in the exhaust gas. .

The supply pipe 40 includes a first supply pipe 41 disposed between the first and second perforated plates 50 and 60 to be described later as shown in FIGS. 2 and 3, A third supply pipe 43 disposed at a predetermined distance from the upper side of the second supply pipe 42 and a third supply pipe 43 disposed at an upper side of the third supply pipe 43, And includes a fourth supply pipe 44.

The first, second, third, and fourth supply pipes 41, 42, 43, and 44 each have a first pipe portion P1 formed in a ring shape having a predetermined diameter as shown in FIG. 3, A second pipe portion P2 formed in a ring shape having a relatively smaller diameter than the first pipe portion P1 and a third pipe portion P2 formed in a ring shape having a smaller diameter than the second pipe portion P2, A plurality of connecting piping portions P4 for connecting and supporting the first, second and third piping portions P1, P2 and P3 and the first, second and third piping portions P1, P2, P3 to supply the reaction liquid to the inside thereof.

At this time, the first, second and third piping sections P1, P2, and P3 are positioned and fixed concentrically and coplanarly with each other by a plurality of connection piping sections P4, and a plurality Nozzles are installed.

Here, the nozzles are installed in different numbers depending on the diameters of the first, second and third pipe sections P1, P2 and P3. At the same time, the flow of the exhaust gas is stabilized to improve the reaction efficiency of the reaction liquid and the exhaust gas The first and fourth supply pipes 41 and 44 are provided with a hollow cone nozzle HN and the second and third supply pipes 42 and 43 are provided with a filler nozzle FN.

More specifically, as shown in FIG. 4, the hollow cone nozzle HN is configured such that the reaction liquid injected from the nozzle is injected in a ring shape gradually increasing in diameter. With this configuration, the hollow cone nozzle HN When the reaction liquid is injected through the first supply pipe 41 provided with the HN, the region where the reaction liquid is not injected relatively is formed at the central portion of each nozzle as shown in FIG. 5, and the exhaust gas flows toward the center of the nozzle Is passed through the injection area of the next reaction liquid.

As a result, the exhaust gas passes through the second and third supply pipes 42 and 43, which are located on the upper side in a state where the flow is stabilized (induced) so that the exhaust gas vertically rises around the hollow cone nozzle HN.

As shown in FIG. 6, the full-cone nozzle FN is configured such that the reaction liquid injected from the nozzle is atomized and uniformly sprayed as a whole. With this configuration, the flow of the liquid through the first supply pipe 41 is stabilized The exhaust gas reacts while passing through the injection region (totally injected) of the full-cone nozzle FN as shown in Fig.

At this time, the reaction liquid injected through the full-cone nozzle FN is atomized and is scattered upward by the flow rate of the exhaust gas, so that the exhaust gas and the reaction liquid react more effectively.

Then, the flow of the exhaust gas and the scattered reaction liquid is stabilized again through the hollow cone nozzle HN of the fourth supply pipe 44 so that the exhaust gas is exhausted through the exhaust gas outlet 30 located in the upper portion of the gas- And the reaction liquid that is scattered toward the upper side together with the exhaust gas falls to the lower side of the main body 10 under the influence of the reaction liquid injected through the hollow cone nozzle HN.

As a result, the flow of the exhaust gas is stabilized by the reaction liquid injected through the plurality of supply pipes 40 while passing through the gas-liquid reaction part 11 to ensure the flow rate and reaction efficiency, and at the same time, It is naturally prevented from being discharged to the exhaust gas outlet 30 side.

On the other hand, when the nozzles are vertically arranged so as to face the lower side of the pipe P, the injection region SZ having a uniform width is formed on the inner and outer sides with reference to the pipe P as shown in Fig. 8 (a) When the nozzles are arranged at a predetermined angle so as to face the inside of the pipe P, more injection area SZ is formed inside the pipe P as shown in FIG. 8 (b) The spray area SZ is formed to the outside of the pipe P as shown in FIG. 8 (c).

Therefore, only by properly changing the installation angles of the nozzles provided in the first, second and third pipe sections P1, P2, P3 of the first, second, third and fourth supply pipes 41, 42, 43, Liquid can be uniformly injected onto the space of the gas-liquid reaction part 11. [

In addition, the reaction liquid sprayed through the supply pipe 40 is adjusted in concentration such that the pH of the reaction solution is maintained at about 7 to 9 in a solution state such as sodium hydroxide, calcium carbonate, calcium hydroxide and ammonia water.

The first and the second perforated plates 50 and 60 are configured to distribute the exhaust gas so that the exhaust gas flowing into the main body 10 through the exhaust gas inlet 20 can be evenly distributed to the gas- to be.

The first and second perforated plates 50 and 60 have a circular plate shape and are radially formed with a plurality of holes H as shown in FIG. The total area of the flow path formed by the holes is set to be 40 to 50% of the total area of the perforated plate in order to prevent the flow rate of the exhaust gas from being lowered.

This is because if the total area of the flow path formed by the holes H is less than 40%, the flow rate of the exhaust gas is decreased and the energy for discharging the exhaust gas is increased. On the other hand, The distribution efficiency of the exhaust gas is reduced.

At this time, the primary perforated plate 50 may not uniformly pass the exhaust gas through the holes formed in the primary perforated plate 50 due to the positional difference with the exhaust gas inlet 20, thereby uniformly distributing the exhaust gas The first hole H1 formed near the exhaust gas inlet 20 on the basis of the imaginary center line CL is formed on the far side as shown in FIG. 10, The diameter of the second hole H2 may be larger than the diameter of the second hole H2.

This is because the exhaust gas flowing into the interior of the main body 10 through the exhaust gas inlet 20 has a predetermined flow rate and therefore a relatively large amount of foreign matter is supplied toward the primary perforated plate 50 closer to the exhaust gas inlet 20 The exhaust gas can not pass through.

Even if a large amount of exhaust gas flows into the second hole H2, a difference in the speed at which the exhaust gas passes between the first hole H1 and the second hole H2, which naturally has a larger diameter, is generated As a result, the flow of the exhaust gas is guided from the second hole (H2) toward the first hole (H1), so that the exhaust gas is evenly distributed as a whole.

The diameter of the hole H may be different from that of the hole H but may be different from the diameter of the hole H to be formed .

11, the side closer to the exhaust gas inlet 20 is positioned relatively higher, so that the exhaust gas can flow naturally toward the exhaust gas inlet 20, and on the contrary, the side closer to the exhaust gas inlet 20 is located higher It is possible to provide a slope A having a predetermined angle such that the slope A is positioned at a predetermined angle as shown in FIG. 12. In this case, in order to divide the inside of the main body 10 with the slope A at a predetermined angle, The first perforated plate 50 'of the first embodiment can be formed.

As a result, the exhaust gas flowing into the exhaust gas inlet 20 flows into the primary perforated plate 50 'while flowing toward the exhaust gas inlet 20 from the side far from the exhaust gas inlet 20 by the inclination A of the primary perforated plate 50' And is uniformly distributed through the holes H formed.

The exhaust gas supplied to the inside of the main body 10 by the primary and secondary perforated plates 50 and 60 having the above-described configuration passes through the primary perforated plate 50 and flows into the interior space of the gas-liquid reactive section 11 The flow of the exhaust gas is stabilized by the reaction liquid which is uniformly distributed and flows to the first supply pipe 41 located at the upper side and is injected through the hollow cone nozzle HN of the first supply pipe 41, The exhaust gas is more uniformly distributed again through the secondary perforated plate 60. [

The flow is stabilized so that the flow velocity is ensured and the exhaust gas in a uniformly distributed state passes through the reaction liquid injection region in the particulate state distributed through the second and third supply pipes 42 and 43 while effectively and rapidly reacting with the reaction liquid And then discharged through the exhaust gas discharge pipe 30 through the fourth supply pipe 44 after the harmful substances are removed.

The gas-liquid reacting unit 11 may further include a filter unit 70 for separating the gas-liquid prior to exhausting the exhaust gas through the exhaust gas outlet 30, And includes a demister filter 71, a dew guide plate 72, and a dew guide pipe 73 as shown in Fig.

Here, the demister filter 71 is disposed in the width direction on the upper part of the gas-liquid reaction part 11, and moisture (reaction liquid) and impurities are not emitted to the outside before the exhaust gas from which nitrogen oxides and sulfur oxides are removed is discharged to the outside .

However, due to the installation of the demister filter 71, a temperature difference is generated between the demister filter 71 and the upper part of the demister filter 71 where the gas-liquid reaction occurs, ). As the gas-liquid reaction progresses, the amount of dew increases and eventually the dew descends and the gas-liquid reaction efficiency is lowered.

Therefore, the dew induction plate 72 is provided at both lower corners of the demister filter 71 and the dew induction pipe 72 connected to the dew induction plate 72 to discharge dew along the inner side surface of the main body 10 73 are installed.

When the gas-liquid reaction occurs actively, the dew formed on the side surface of the demister filter 71 is lowered due to the temperature difference between the upper part of the gas-liquid reaction part 11 and the demister filter 71, And then drops downward along the inner side surface of the main body 10 through the dew induction pipe 73 and is collected in the reaction tank 12.

Hereinafter, the use of the high efficiency wet scrubber of the present invention will be described.

When the high-efficiency wet scrubber 1 according to the present invention is used to effectively purify and discharge nitrogen oxides and sulfur oxides in the exhaust gas generated by combustion of fossil fuels in various power plants, steel mills, and the like, The exhaust gas flowing through the exhaust gas inlet 20 flows into the lower side of the gas-liquid reaction section 11 of the main body 10 and passes through the primary perforated plate 50 provided at the inner lower portion of the gas-liquid reaction section 11 And is uniformly distributed and elevated in the gas-liquid reaction part 11.

The exhaust gas, which is raised through the primary perforated plate 50 in this way, is supplied to the gas-liquid reacting section 11 by the reaction liquid injected from the plurality of supply pipes 40 provided inside the gas-liquid reacting section 11, And the exhaust gas from which nitrogen oxides and sulfur oxides have been removed is exhausted through a demister filter 71 provided at the uppermost part of the gas-liquid reaction part 11 to remove water and impurities, And is discharged to the outside along the exhaust gas outlet 30 due to the suction action.

At this time, in the course of the gas-liquid reaction, a temperature difference is generated in the upper part of the vapor-liquid reaction part 11 and the demister filter 71, so that dew is formed on the side part of the demister filter 71, 72 and collected along the inner side surface of the main body 10 through the dew induction pipe 73 to the lower side and collected in the reaction tank 12.

The reaction liquid reacted with the salt generated by the reaction with the nitrogen oxides and sulfur oxides of the exhaust gas in the gas-liquid reacting section 11 is dropped into the reaction tank 12, stored and then processed.

As described above, the high-efficiency wet scrubber according to the present invention is provided with a supply pipe arranged in a ring shape so as to form concentric circles in the inside of the main body, so that it is easily installed in the cylindrical main body, , The secondary perforated plate, the full condenser nozzle, and the hollow cone nozzle, the flow of the exhaust gas is stabilized in the gas-liquid reaction process to ensure the flow rate and reactivity of the exhaust gas. As a result, the removal efficiency of the harmful substances contained in the exhaust gas And the energy used is saved.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It is to be understood that the scope of the present invention should not be construed as being limited only by the appended claims and should not be construed as limiting the scope of the present invention to those of ordinary skill in the art. It will be very self-evident.

1: High efficiency wet scrubber
10: main body 11: gas-liquid reaction part
12: Reactor 20: Exhaust gas inlet
30: exhaust gas outlet 31: exhaust fan
40: supply pipe 41: first supply pipe
42: second supply pipe 43: third supply pipe
44: fourth supply pipe 50, 50 ': primary pressure plate
60: Secondary Perforation 70: Filter
71: demister filter 72: dew-induced plate
73: Dew condensation tube A: Tilt
CL: virtual center line FN: full-cone nozzle
HN: hollow cone nozzle H1: first hole
H2: Second hole P: Piping
P1: first piping part P2: second piping part
P3: Third piping part P4: Connection piping part
P5: Supply piping SZ: Injection area

Claims (5)

A cylindrical main body 10 including a gas-liquid reaction part 11 formed on an inner upper side and a reaction tank 12 formed on an inner lower side;
An exhaust gas inlet 20 formed to penetrate the side surface of the main body 10 and allowing the exhaust gas to flow into the lower portion of the gas-liquid reaction part 11;
An exhaust gas outlet 30 located above the main body 10 and passing through the gas-liquid reaction part 11 to exhaust the exhaust gas from which nitrogen oxides and sulfur oxides have been removed to the outside;
A plurality of supply pipes (40) located in the gas-liquid reaction part (11) inside the main body (10) and spaced vertically at predetermined intervals to spray the reaction liquid downward;
A primary perforated plate (50) installed between the plurality of supply pipes (40) and the reaction tank (12) so that exhaust gas flowing through the inlet (20) is distributed and elevated in a first order; And
A secondary perforated plate (60) installed between the plurality of supply pipes (40) so that exhaust gas passing through the primary perforated plate (50) is distributed and raised in a second order;
/ RTI >
The plurality of supply pipes (40)
A first supply pipe 41 installed between the first and second perforated plates 50 and 60;
A second supply pipe (42) installed on the upper side of the secondary perforated plate (60); And
And a third supply pipe (43) spaced apart from the upper side of the second supply pipe (42) by a predetermined distance,
The first, second and third supply pipes (41, 42, 43)
A first pipe portion P1 formed in a ring shape having a predetermined diameter;
A second pipe portion P2 formed into a ring shape having a relatively small diameter as compared with the first pipe portion P1;
A third pipe portion P3 formed in a ring shape having a relatively small diameter as compared with the second pipe portion P2;
A plurality of connection piping sections P4 for connecting and supporting the first, second and third piping sections P1, P2 and P3; And
A supply pipe portion P5 connected to one side of the first, second and third pipe portions P1, P2, and P3 to supply the reaction solution to the inside;
Lt; / RTI >
The first, second, and third piping sections P1, P2,
A plurality of nozzles are radially arranged at a predetermined interval on a lower outer side surface while being positioned and fixed concentrically and coplanarly with each other by the plurality of connection pipe portions P4,
In the first supply pipe 41,
A hollow cone nozzle HN for concentrating and spraying the reaction liquid in a peripheral direction relative to the central portion is provided,
In the second and third supply pipes 42 and 43,
(FN) for atomizing the reaction liquid and uniformly injecting the reaction liquid as a whole,

The first, second and third supply pipes (41, 42, 43)
And the nozzles are installed at different angles so that the reaction liquid is sprayed uniformly throughout the gas-liquid reaction part (11)
The primary perforated plate (50)
The first hole H1 formed on the side closer to the exhaust gas inlet 20 with respect to the imaginary center line CL is formed larger in diameter than the second hole H2 formed on the far side, High efficiency wet scrubber.
delete The method according to claim 1,
A fourth supply pipe (44) is further provided at an upper portion of the third supply pipe (43)
In the fourth supply pipe 44,
And a hollow cone nozzle (HN) for concentrating and spraying the reaction liquid in a peripheral direction relatively to the center portion.
delete The method according to claim 1,
The primary and secondary perforated plates (50, 60)
Wherein the total area of the flow path formed by the holes is 40 to 50% of the total area of the perforated plate.

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