KR20180127583A - An Exhaust Gas Treatment System Having Backflow Prevention Means - Google Patents

Abstract

According to one embodiment of the present invention, an exhaust gas treatment system with a backflow prevention unit comprises: an exhaust gas processing device for introducing exhaust gas generated by combustion and injecting a cleaning liquid to the exhaust gas to remove harmful substances in the exhaust gas; and a piping part for transferring the exhaust gas from two or more combustion devices for generating exhaust gas by combustion to the exhaust gas processing device. The piping part includes the backflow prevention unit for preventing the backflow of the cleaning liquid from the exhaust gas processing device to the combustion device whose operation is stopped when each of the combustion devices stops operating.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas treatment system having an anti-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas treatment system having a backflow prevention means, and more particularly, to an exhaust gas treatment system having a backflow prevention means, And a piping section for transferring the exhaust gas from the two or more combustion apparatuses for generating exhaust gas by combustion to the exhaust gas processing apparatus. The piping section is connected to the exhaust gas processing apparatus And a backflow prevention means capable of preventing backflow of the cleaning liquid from the combustion apparatus that has been stopped from operation.

Most modern ships are equipped with engines and boilers for their own power and heating. In order to drive the engine and the boiler, fuel must be burned. The exhaust gas generated in the combustion process includes harmful substances such as SOx, NOx, PM (Particular Matter, Particulate Material) have.

Sulfur oxides and nitrogen oxides can cause respiratory illness by acting on the mucous membranes of the human body, and they are pollutants designated by the International Agency for Research on Cancer (WHO) as a primary carcinogen. When the SOx and NOx are released into the air as they are, they react with water (H ₂ O) in the atmosphere and become sulfuric acid (H ₂ SO ₄ ) and nitric acid (HNO ₃ ), respectively.

PM is a form of small particles compared to gaseous pollutants. PM is emitted into the atmosphere as it is, and it can cause visibility disorder that reduces visibility, or fine particles can enter the human body through the lungs or respiratory tract and cause various diseases . In recent years, fine dust that is a problem in Korea is also caused by PM, which is considered to be the main cause of air pollution.

Therefore, it is necessary to prevent such harmful substances in the exhaust gas. In particular, in the case of a ship, it is known that the output of the engine is large, so that it emits exhaust gas of 130 times that of a passenger car. In order to prevent the emission of a large amount of harmful substances Specific and practical measures are required for the exhaust gas of the ship.

Therefore, the International Maritime Organization (IMO) has set up an Emission Control Area (ECA) to limit the emission of hazardous substances in the sea area. In particular, the SOx Emission Control Area (SECA) has been stricter than the ECA, which regulates other harmful substances such as NOx.

Furthermore, from January 1, 2015, the regulations were further strengthened to limit sulfur content in the fuel to 0.1% (IMO 184 (59)), which causes environmental pollution for all ships passing through the SECA. The SECA was extended to North America from the Baltic and North Sea regions through the amendment of the Convention on Marine Pollution Prevention in August 2011 and will be extended from April 1, Sulfate management is likely to become more important.

In addition to the ECA, legislation to regulate the SOx content in the exhaust gas to 3.5% or less in the waters around the world is scheduled to be implemented by 2020 from 0.5% at the IMO General Assembly held on October 28, 2016, The need for sulfuric acid management is growing even more.

In order to comply with such international regulations, LNG propellant lines, which use low sulfur or low sulfur oxides as fuel, are used, and scrubbers that reduce sulfur oxides are used. It is also used.

It is economically advantageous to perform the exhaust gas treatment process using a scrubber to satisfy the above-mentioned regulations even with a low-cost fuel having a relatively high sulfur content and to prevent environmental pollution. The scrubber ionizes the SOx with the cleaning liquid. When the sea water (pH 8.3) or the fresh water containing the alkaline additive is used as the cleaning liquid, the ionized sulfur oxide can be neutralized. In addition, the particulate matter may be agglomerated and discharged together with the cleaning liquid to prevent release into the atmosphere.

In addition to the main engine, there are a number of combustion devices such as auxiliary engines and boilers. Therefore, the scrubber must treat exhaust gas generated from a plurality of combustion devices. For this purpose, a multi inlet is formed in the exhaust gas inlet of the scrubber, and exhaust gas generated from a plurality of combustion devices such as the main engine and the auxiliary engine is introduced into the scrubber through the multi-inlet.

In such a situation, when any one of the plurality of combustion devices is required to be restarted due to a failure or for other reasons, the pressure of the pipe connecting the combustion device and the scrubber is lowered, and there is a risk that backflow from the scrubber to the combustion device occurs. In this process, if the cleaning liquid injected from the scrubber is introduced into the combustion apparatus such as an engine, the function of the combustion apparatus is seriously affected. Therefore, there is a need to develop a technique for preventing reverse flow of the cleaning liquid from the scrubber in the inflow structure of the exhaust gas through the multi-inlet to the scrubber.

US Patent No. 9,272,241 entitled " COMBINED CLEANING SYSTEM AND METHOD FOR REDUCTION OF SOX AND NOX IN EXHAUST GASES FROM A COMBUSTION ENGINE ", 2016. 03. 01.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art,

SUMMARY OF THE INVENTION An object of the present invention is to provide a flue gas treating apparatus and a flue gas treating method that prevent flue gas from flowing back to a combustion apparatus in an exhaust gas treating apparatus in which exhaust gas generated by combustion is introduced and a cleaning liquid is injected into the exhaust gas, And an exhaust gas treatment system.

It is another object of the present invention to provide an exhaust gas purifying apparatus and an exhaust gas purifying apparatus in which when exhaust gas generated in two or more combustion apparatuses has a structure to be introduced into one exhaust gas processing apparatus and when any one of the combustion apparatuses does not operate due to failure or the like, And a backflow prevention means for preventing backflow of exhaust gas or cleaning liquid from the exhaust gas treatment device to the combustion device.

It is still another object of the present invention to provide an exhaust gas treatment apparatus that includes a transfer conduit that connects each of the combustion apparatuses and the exhaust gas treatment apparatus in a one-to-one correspondence relationship and transfers the exhaust gas from the combustion apparatuses to the exhaust gas treatment apparatus, And the backflow prevention means is disposed in each of the transfer conduits so as to shut off the connection between the combustion device and the exhaust gas treatment device. The backflow prevention means includes a backflow preventing means for effectively preventing backflow to each combustion device Gas processing system.

It is still another object of the present invention to provide an exhaust gas treatment system having backflow preventing means for providing a bypass to the exhaust gas generated in each combustion device.

It is still another object of the present invention to provide an exhaust gas treatment apparatus having an anti-backflow means for efficiently removing harmful gas in an exhaust cleaning solution of an exhaust gas treatment apparatus through an exhaust gas treatment apparatus having improved space utilization and harmful substance removal efficiency System.

It is another object of the present invention to provide an exhaust gas purification apparatus that is applied to a ship and has a backflow preventing means for efficiently removing harmful substances including sulfur oxides (SOx) in exhaust gas discharged from an engine or a boiler of the ship Processing system.

In order to achieve the above object, the present invention is implemented by the following embodiments.

According to an embodiment of the present invention, an exhaust gas processing system having the backflow prevention means of the present invention is configured to remove exhaust gas in the exhaust gas by injecting the exhaust gas generated by the combustion, And a piping section for transferring the exhaust gas from the two or more combustion apparatuses for generating exhaust gas by combustion to the exhaust gas processing apparatus, wherein the piping section is connected to the exhaust And a backflow prevention means capable of preventing backflow of the cleaning liquid from the gas processing device to the combustion device whose operation is stopped.

According to another embodiment of the present invention, in the exhaust gas processing system having the backflow prevention means of the present invention, the piping portion connects each of the combustion devices and the exhaust gas processing device in a one- And a transfer conduit for transferring the exhaust gas to the exhaust gas processing device. The backflow prevention means is disposed in each of the transfer conduits so as to block connection between the combustion device and the exhaust gas treatment device do.

According to another embodiment of the present invention, in the exhaust gas treatment system having the backflow prevention means of the present invention, the pipe portion is branched between each of the combustion devices and each of the backflow prevention means among the respective transfer conduits, And a bypass conduit for providing a bypass to the exhaust gas generated in the bypass conduit.

According to another embodiment of the present invention, in the exhaust gas treatment system having the backflow prevention means of the present invention, the piping portion is disposed in each of the bypass conduits to block the bypass of the exhaust gas to the bypass conduit Further comprising:

According to another embodiment of the present invention, the exhaust gas processing system having the backflow prevention means of the present invention is characterized in that the piping portion is configured such that the exhaust gas moved through each of the transfer conduits can be introduced together with the exhaust gas treatment device And a manifold for supplying the manifold.

According to another embodiment of the present invention, in the exhaust gas treatment system having the backflow prevention means of the present invention, the exhaust gas treatment system having the backflow prevention means is installed on the ship, and the harmful substance is sulfur oxides (SOx) And a control unit.

According to another embodiment of the present invention, there is provided an exhaust gas treatment system having a backflow prevention means according to the present invention, wherein the exhaust gas treatment device includes a pretreatment device for primarily reducing harmful substances in exhaust gas generated by combustion, And a post-processor connected to the harmful gas removing unit for additionally removing harmful substances in the pretreatment gas, which is an exhaust gas whose exhaust gas has been primarily reduced by the pretreatment unit, wherein the pretreatment unit includes: an exhaust gas inlet A preprocessor housing having a pretreatment gas outlet through which a pretreatment gas, which is an exhaust gas having a reduced harmful substance, is flowed out from the pretreatment apparatus and which forms a flow path of the exhaust gas; And an agitating means for allowing the exhaust gas inlet and the stirring means A first pre-treatment injector disposed in the exhaust passage and configured to inject a cleaning liquid into the exhaust gas flowing through the exhaust gas inlet, and a second pretreatment injector disposed between the agitator and the pretreatment gas outlet, And a second pre-treatment injection means for injecting the cleaning liquid into the proceeding exhaust gas.

According to another embodiment of the present invention, in the exhaust gas treatment system having the backflow prevention means of the present invention, the post-processor further includes a pre-treatment gas introducing portion in which the pre- A post-processor housing having a post-process gas outlet through which the post-process gas is removed, forming a flow path of the pre-process gas therein; And a water blocking means for blocking the water.

According to another embodiment of the present invention, in the exhaust gas processing system having the backflow prevention means of the present invention, the post-processor is disposed in the lower portion of the numerical blocking means, and is disposed on the flow path of the pretreatment gas, And a second post-processing injection unit that is disposed on a flow path of the pre-processing gas and injects a cleaning liquid toward the pre-processing gas, and operates independently of the first post-processing injection unit, Further comprising:

According to another embodiment of the present invention, in the exhaust gas treatment system having the backflow prevention means of the present invention, the post-processor is provided with: the first post-treatment injection means and the second post- And a packing supporting means having a diffusion function for supporting the packing at a lower portion thereof and diffusing the pretreatment gas at a lower portion of the packing.

According to another embodiment of the present invention, in the exhaust gas treatment system having the backflow prevention means of the present invention, the post-processor is disposed adjacent to the pretreatment gas inflow portion to diffuse the pretreatment gas introduced through the pretreatment gas inflow portion And a spreading unit for spreading the data.

The present invention has the following effects through the above-described configuration.

The present invention relates to an exhaust gas treatment apparatus for injecting an exhaust gas generated by combustion and injecting a cleaning liquid into the exhaust gas to remove harmful substances in the exhaust gas, There is an effect of providing a gas processing system.

In the case where the exhaust gas generated from two or more combustion devices has a structure that flows into one exhaust gas processing device and the exhaust gas processing is performed in a situation where any one of the combustion devices does not operate due to failure or the like, There is an effect of providing an exhaust gas processing system having backflow prevention means that does not cause exhaust gas from the apparatus to the combustion apparatus or reverse flow of the cleaning liquid.

The present invention includes a transfer conduit for connecting each of the combustion devices and the exhaust gas treatment device in a one-to-one correspondence relationship and for transferring the exhaust gas to the exhaust gas treatment device in each of the combustion devices, The exhaust gas treatment system according to any one of claims 1 to 3, wherein the exhaust gas treatment device is provided in each of the transfer conduits so as to block connection between the combustion device and the exhaust gas treatment device. .

The present invention has an effect of providing an exhaust gas treatment system having a backflow preventing means for providing a bypass to the exhaust gas generated in each combustion apparatus.

The present invention provides an exhaust gas treatment system having a backflow preventing means for efficiently removing harmful gas in an exhaust cleaning liquid of an exhaust gas treating apparatus through an exhaust gas treating apparatus having improved space utilization and harmful substance removing efficiency .

The present invention provides an exhaust gas treatment system having backflow prevention means applied to a ship to enable efficient removal of harmful substances including sulfur oxides (SOx) in the exhaust gas discharged from an engine or a boiler of the ship Effect.

1 is a configuration diagram of an exhaust gas processing system having a backflow prevention means according to an embodiment of the present invention
2 is a configuration diagram of an exhaust gas processing system having a backflow prevention means according to another embodiment of the present invention
3 is a perspective view of the exhaust gas processing apparatus.
4 is an exploded perspective view of the exhaust gas processing apparatus.
5 is a cross-sectional view taken along the line AA '
FIG. 6 is a cross-sectional view of the exhaust gas processing apparatus of FIG. 5,
7 is an exploded perspective view of a preprocessor of an exhaust gas processing apparatus.
8 is a sectional view taken along the line a1-a1 '
9 is a sectional view taken along the line a2-a2 'in section A of Fig. 7
10 is a cross-sectional view taken along the line bb '
11 is a perspective view of the agitating means of the exhaust gas processing apparatus
12 is a cross-sectional view taken along line c1-c1 'of section C of Fig. 7
13 is a cross-sectional view taken along the line c2-c2 '
14 is an exploded perspective view of a post-processor of the exhaust gas processing apparatus.
FIG. 15 is a cross-sectional view taken along the line d1-d1 '
FIG. 16 is a cross-sectional view taken along the line d2-d2 '
17 is a perspective view of diffusion means of an exhaust gas processing apparatus
18 is a perspective view of a packing supporting means of an exhaust gas treating apparatus;
19 is a sectional view taken along the line BB '
20 is a sectional view taken along the line e1-e1 'of the section E of FIG.
21 is a sectional view taken along the line e2-e2 'in the section E of FIG.
22 is a sectional view taken along the line ff 'in FIG. 14
23 is a reference diagram showing the cleaning process in FIG. 22
Fig. 24 is a cross-sectional perspective view taken along the line gg '
25 is a reference diagram showing a numerical cut-off process in Fig. 24

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an exhaust gas treatment system having a backflow prevention means according to the present invention will be described in detail with reference to the accompanying drawings. Unless defined otherwise, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and, if conflict with the meaning of the terms used herein, It follows the definition used in the specification. Further, the detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

In the present invention, exhaust gas means a gas generated in the process of burning a fuel to drive an engine, a boiler, etc., and harmful substances in the exhaust gas include sulfur oxides (SOx), nitrogen oxides (NOx), particulate matter (PM), and the like. The system and method for removing harmful gases in the exhaust cleaning liquid of the exhaust gas treatment apparatus according to the present invention are mainly intended for treatment of exhaust gas in a ship,

Fig. 1 shows a configuration diagram of an exhaust gas treatment system having a backflow prevention means according to an embodiment of the present invention. 1, an exhaust gas treatment system having a backflow prevention means according to the present invention includes an exhaust gas treatment device 1, a manifold 2, a plurality of combustion devices 3a, 3b, 3c, and a pipe portion 4, .

The exhaust gas treatment apparatus 1 is an apparatus for injecting exhaust gas generated by combustion and injecting a cleaning liquid into the exhaust gas to remove harmful substances in the exhaust gas and to discharge the injected cleaning liquid. In the case where the present invention is applied to a ship, the toxic substance includes sulfur oxides (SOx), and the washing liquid is fresh water containing seawater or an alkali additive.

The exhaust gas treatment device (1) dissolves sulfur oxides (SOx) in the exhaust gas by supplying fresh water containing seawater or an alkali additive as a cleaning liquid and discharges the toxic substances and discharges the particulate matter And capture and discharge it. A specific embodiment of the exhaust gas treating apparatus 1 will be described later.

The manifold 2 is a part for providing a multiple connection structure when the exhaust gas is introduced into the exhaust gas processing apparatus 1 from a plurality of combustion devices. The exhaust gas can be simultaneously and smoothly introduced into the exhaust gas processing apparatus 1 from the plurality of combustion devices through the manifold 2. In other words, efficient construction of multi inlet can be achieved through the manifold 2.

The plurality of combustion devices 3a, 3b and 3c include an apparatus for generating exhaust gas by burning fuel such as a main engine, at least one auxiliary engine, a boiler, or the like. In the case where the present invention is applied to a ship, a large ship includes not only a main engine but also a plurality of auxiliary engines, boilers and the like.

The piping unit 4 serves to transfer the exhaust gas from the two or more combustion devices 3a, 3b, and 3c to the exhaust gas processing apparatus 1. [ The piping unit 4 is provided with a backflow preventing means 4 for preventing the backflow of the cleaning liquid from the exhaust gas processing device 1 to the combustion device whose operation is stopped when the combustion devices 3a, 3b, 3c are stopped, (411, 421, 431).

The piping unit 4 is connected to each of the combustion devices 3a, 3b and 3c and the exhaust gas processing device 1 in a one-to-one correspondence manner, and the exhaust gas from each of the combustion devices 3a, 421 and 431 for transferring the exhaust gas to the exhaust gas processing apparatus 1 and the reverse flow preventing means 411, 421 and 431 are connected to the respective combustion devices 3a, 3b and 3c and the transfer conduits 41, 42, and 43 so as to shut off the connection with the exhaust gas treatment apparatus 1. The exhaust gas treatment apparatus 1 shown in FIG.

The backflow prevention means 411, 421, 431 may include a shut-off valve. Each of the combustion devices 3a, 3b and 3c is referred to as a first combustion device 3a, a second combustion device 3b and a third combustion device 3c and each of the transfer conduits 41, 42, Each of the backflow prevention means 411, 421 and 431 may be referred to as a first upstream conduit 41, a second upstream conduit 42 and a third downstream conduit 43, The second backflow prevention means 421, and the third backflow prevention means 431.

In the present invention, if the second combustion device 3b is stopped due to a failure or the like, and the second backflow prevention means 421 is required to restart the second combustion device 3b and the exhaust gas treatment The exhaust gas treatment device 1 is connected to the second combustion device 3b even when the first and third combustion devices 3a and 3c are in normal operation, It is possible to prevent the exhaust gas, the cleaning liquid, and the like from flowing backward.

The piping section 4 is branched from each of the combustion devices 3a, 3b and 3c among the transfer conduits 41, 42 and 43 and each of the backflow prevention means 411, 421 and 431, (41b, 42b, 43b) for providing a bypass to the exhaust gas generated in the exhaust passages (3a, 3b, 3c).

Each of said bypass conduits 41b, 42b, 43b is defined as a first transfer conduit 41, a second transfer conduit 42 and a third transfer conduit 43, Are the first bypass conduit 41b, the second bypass conduit 42b, and the third bypass conduit 43b. Each of the bypass conduits 41b, 42b, and 43b provides a bypass to the exhaust gas generated in each of the combustion devices 3a, 3b, and 3c.

For example, in the case where the first combustion device 3a is restarted after shutdown, the pressure in the first combustion device 3a until the pressure of the exhaust gas generated in the first combustion device 3a becomes a certain level The generated exhaust gas is allowed to flow through the first bypass conduit 41b in a state in which the first backflow prevention means 411 is disconnected from the first combustion device 3a and the exhaust gas treatment device 1 .

The piping unit 4 is provided in each of the bypass conduits 41b, 42b and 43b and has blocking means 412, 422 and 432 for blocking the bypass of the exhaust gas to the bypass conduits 41b, 42b and 43b ). ≪ / RTI > Each of the bypass conduits 41b, 42b and 43b is referred to as a first bypass conduit 41b, a second bypass conduit 42b and a third bypass conduit 43b. 422, and 432 may be first blocking means 412, second blocking means 422, and third blocking means 432, which may include a shut-off valve.

The process of preventing the backflow in the present invention will be described in detail below.

If the first combustion device 3a is stopped due to a failure or the like and the second combustion device 3b and the third combustion device 3c are operated normally, the first backflow prevention means 411 Thereby disconnecting the connection between the first combustion device (3a) and the exhaust gas treatment device (1).

Further, even when the first combustion device (3a) is restarted, the first backflow prevention means (411) does not operate until the pressure of the exhaust gas generated in the first combustion device (3a) The connection between the first combustion device 3a and the exhaust gas treatment device 1 is continuously blocked and the first shutoff means 412 is controlled to open so that the exhaust gas generated in the first combustion device 3a 1 by-pass conduit 41b.

Furthermore, when the pressure of the exhaust gas generated in the first combustion device 3a reaches a level at which backflow can be prevented, the first blocking means 412 is closed and the first backflow prevention means 411 is opened The exhaust gas produced in the first combustion device 3a is controlled to flow into the exhaust gas treatment device 1 through the first transfer conduit 41. [

FIG. 2 is a block diagram of an exhaust gas treatment system having a backflow prevention means according to another embodiment of the present invention. The exhaust gas treatment apparatus 1 will be described in detail.

2 to 5, the exhaust gas processing apparatus 1 includes a preprocessor 11, a connection unit 12, and a post-processor 13. The pre-

Referring to FIG. 6, a process of treating the exhaust gas in the exhaust gas processing apparatus 1 will be briefly described below. In FIG. 6, a bold arrow indicates a flow of gas, a dotted line indicates a spraying liquid, and a thin arrow indicates a spraying liquid.

When the exhaust gas generated by the combustion is introduced through the exhaust gas inlet 1112, the pre-processor 11 primarily produces harmful substances as a pretreatment gas and discharges the exhaust gas through the pretreatment gas outlet 1113. The connection part (12) moves the pretreatment gas to the post-processor (13). The post-processor 13 further removes harmful substances from the pre-treatment gas introduced through the pre-treatment gas inlet 1312 and discharges the post-treatment gas through the post-treatment gas outlet 1313.

In order to remove harmful substances in the exhaust gas in the preprocessor 11, the cleaning liquid introduced into the cleaning liquid inlet 1114 of the preprocessor 11 and the harmful substances of the pretreatment gas in the post- The cleaning liquid introduced into the cleaning liquid inflow portion 1314 of the post-processor 13 to remove the cleaning liquid is used as cleaning liquid outflow portions 1115 and 1315 formed in the lower portions of the preprocessor 11 and the post- ≪ / RTI >

When the present invention is applied to a ship, the washing liquid may be fresh water mixed with seawater or an alkali additive, and the exhaust gas may be generated in a combustion process of an engine or a boiler of the ship, (SOx) and PM.

The preprocessor 11 plays a role of primarily reducing harmful substances in the exhaust gas generated by the combustion. 4 through 7, the preprocessor 11 includes a preprocessor housing 111, a first pre-treatment injection unit 112, a stirring unit 113, and a second pre-treatment injection unit 114 .

The preprocessor housing 111 forms a contour of the preprocessor 11 and forms a flow path of the exhaust gas inside. The preprocessor housing 111 includes an inner wall 1111, an exhaust gas inlet 1112, a pretreatment gas outlet 1113, a cleaning liquid inlet 1114, and a cleaning liquid outlet 1115. 3 to 7, in the embodiment of the present invention, the preprocessor housing 111 is formed as a cylindrical tower, and moves the introduced exhaust gas from the upper portion to the lower portion of the preprocessor housing 111, Forming a flow path through which harmful substances in the exhaust gas can be primarily removed.

The inner wall 1111 is a part forming the flow path of the exhaust gas inside the preprocessor housing 111. Referring to FIG. 4, in an embodiment of the present invention, the inner wall 1111 forms a flow path of the exhaust gas inside the preprocessor housing 111 in a cylindrical shape.

The exhaust gas inlet 1112 is a portion into which the exhaust gas flows into the interior of the preprocessor housing 111. 4 to 7, the exhaust gas inlet 1112 is formed at the upper end of the preprocessor housing 111, and the exhaust gas introduced through the exhaust gas inlet 1112 And moves downward along a cylindrical flow path formed by the inner wall 1111.

The pretreatment gas outlet 1113 is a portion through which the pretreatment gas, which is an exhaust gas from which harmful substances are primarily removed, is discharged from the pretreatment apparatus 11. As shown in FIGS. 4 to 7, the pretreatment gas outlet 1113 is formed at a lower side of the pre-processor housing 111, and the pretreatment gas outlet 1113, which is discharged through the pretreatment gas outlet 1113, Processing unit 13 through the connection unit 12. The post-

The cleaning liquid inflow portion 1114 is a portion into which a cleaning liquid to be injected from the inside of the preprocessor 11 flows. 7, the cleaning liquid inflow portion 1114 is connected to or formed respectively with the first pre-processing injection means 112 and the second pre-processing injection means 114, which will be described later.

The cleaning liquid outlet 1115 is connected to the first pre-treatment injection unit 112 and the second pre-treatment unit 112 to remove harmful substances from the exhaust gas flowing into the interior of the preprocessor housing 111 through the exhaust gas inlet 1112. [ 2 is a portion where the cleaning liquid injected by the pre-treatment injection means 114 is discharged. 4 to 7, the rinse solution outlet 1114 is formed at the lower end of the pre-processor housing 111, and the rinse solution outlet 1114 is connected to the first pre- The cleaning liquid injected by the second pre-treatment injection means 114 collects the harmful substances in the exhaust gas, moves to the lower end of the pre-processor housing 111, and is discharged to the outside. In order to smoothly discharge the cleaning liquid, it is preferable that the lower end of the pretreatment processor housing 111 is converged toward the cleaning liquid outlet 1114.

The first pretreatment injection means 112 is disposed in the vicinity of the exhaust gas inflow portion 1112 in the interior of the preprocessor housing 111 and injects the cleaning liquid into the exhaust gas flowing through the exhaust gas inflow portion 1112 . As described above, fresh water mixed with seawater and an alkali additive may be used as the washing liquid.

The first pre-treatment injector 112 cools the exhaust gas flowing through the exhaust gas inlet 1112. The exhaust gas flowing through the gas inlet 1112 generally has a temperature of 250 to 350 ° C. The temperature of the exhaust gas flowing through the gas inlet 1112 is reduced to 50 to 50 ° C. by the cleaning liquid injected by the first pre- And the volume is reduced.

In addition, the first pretreatment injection means 112 allows the PM to be primarily collected by the cleaning liquid, among the harmful substances in the exhaust gas. The exhaust gas in contact with the cleaning liquid injected by the first pre-treatment injection means 112 passes through the agitating means 113, the flow path thereof changes from a straight line to a spiral shape, and a second pre-treatment injection means 114 And comes into contact with the cleaning liquid to be sprayed. Accordingly, the cleaning liquid, which is sprayed by the first pre-treatment injection means 112 and collects toxic substances, increases in size, and is moved to the lower portion of the preprocessor housing 111 by gravity.

The first pretreatment injection means 112 injects the cleaning liquid in the form of a fine droplet compared with the second pretreatment injection means 114. [ Specifically, the first pretreatment spraying means 112 may spray the cleaning liquid in the form of droplets having a particle diameter of 100 to 200 mu m. Among the harmful substances of the exhaust gas, PM has a particle diameter of about 0.1 to 0.5 탆. When the cleaning liquid is sprayed in a droplet shape having a particle diameter of 100 to 200 탆, the PM is efficiently agglomerated and aggregated in the cleaning liquid .

8 and 9, in an embodiment of the present invention, the first pre-processing injection unit 112 includes a rod-shaped injection body 1121, a jet opening 1122 formed at one end of the injection body 1121, And the jetting body 1121 can receive the cleaning liquid and compressed air from the cleaning liquid supply unit (not shown) through the cleaning liquid inlet 1114. [ The injection body 1121 receives the cleaning liquid together with the compressed air and delivers the cleaning liquid to the injection port 1122. The injection port 1122 injects the cleaning liquid toward the exhaust gas.

The first pretreatment injection means 112 is disposed horizontally on a cross section perpendicular to the traveling direction of the exhaust gas on the flow path of the exhaust gas formed by the inner wall 1111 of the preprocessor housing 111, And a plurality of protruding portions are disposed on the inner wall 1111 toward the center of the flow path at predetermined angular intervals. Through this arrangement, the cleaning liquid can be efficiently sprayed to the exhaust gas flowing into the exhaust gas inlet 1112 and proceeding toward the agitating means 113.

The specific shape and arrangement of the first pre-treatment injection means 112 may vary depending on the distribution amount of the first pre-treatment injection means 112 and the overall length design of the preprocessor 11. [

The agitating means 113 is disposed between the first pretreatment injecting means 112 and the second pretreatment injecting means 114 in the interior of the pretreatment housing 111 so that the exhaust gas on the flow path is curved, Preferably a helical flow. In one embodiment of the present invention, the preprocessor housing 111 forms an exhaust gas flow path vertically downward from the top to the bottom, wherein the agitator means 113 is connected to the inlet 1112 through the exhaust gas inlet 1112 So that the flow of the exhaust gas advancing straight downward is changed into a curved shape, preferably a spiral shape.

When the flow of the exhaust gas on the flow path is changed from a straight line to a curved line by the agitating means 113, the flow path becomes long, and as a result, the cleaning liquid injected by the second pre- The contact time of the contact surface is increased. Accordingly, the rate at which the harmful substances such as PM and SOx are trapped by the cleaning liquid in the exhaust gas becomes high. Therefore, it is preferable that the agitating means 113 is disposed adjacent to the exhaust gas inflow portion 1112.

Thus, the agitation means 113 can improve the removal time of harmful substances in the exhaust gas compared to the inner space of the preprocessor housing 111, and can increase the height of the preprocessor 11 without increasing the height thereof, The efficiency of removing harmful substances in the exhaust gas can be improved even if the height is reduced. As a result, it is possible to downsize the facility.

10 and 11, the stirring means 113 includes a central body 1131, a plurality of vanes 1132 and a space portion 1133, which are disposed to cover the flow path, Processor housing 111 by a flange portion 1334 coupled to the outer side of the front wall 1132. The front wall 1111 of the pre- The stirring means 113 may be arranged to be coupled to the inner wall 1111 of the preprocessor housing 111 through welding or the like.

The body 1131 is a center portion of the stirring means 113 and the wing 1132 is radially coupled to the body 1131 at a predetermined twist angle. The space portion 1133 is a portion formed between each of the vanes 1132 to form a space through which the exhaust gas can pass without colliding with the vanes 1132.

As shown in FIG. 10, in the embodiment of the present invention, the agitating means 113 includes six blades 1132 at intervals of 30 ° along the outer surface of the body 1131, And the space 1133 is formed between each of the vanes 1132.

When the agitating means 113 is configured as described above, the flow of the exhaust gas having passed through the agitating means 113 is formed in a spiral shape, and the flow of the exhaust gas formed by the inner wall 1111 of the pre- The first pre-treatment injection means 112 and the second pre-treatment injection means 114 can be formed symmetrically with respect to the moving direction center of the flow path, So that harmful substances in the trapped exhaust gas can flow down on the inner wall 1111 of the housing 111.

If the space portion 1132 does not appear between the vanes 1132, the exhaust gas flowing through the exhaust gas inlet portion 1112 is subjected to excessive pressure loss when passing through the agitation means 113 So that the flow of the exhaust gas is not preferable.

Further, it is preferable that the stirring means 113 is fixed without rotating. This is because the exhaust gas flowing through the exhaust gas inflow portion 1112 generally has a sufficient fluid supply speed toward the pretreatment gas outflow portion 1113 and therefore it is necessary to supply a separate linear energy to the exhaust gas on the flow path There is no.

The second pretreatment injection means 114 is disposed between the agitation means 113 and the pretreatment gas outflow 1113 in the interior of the preprocessor housing 111 and through the agitating means 113, And the cleaning liquid is sprayed on the exhaust gas proceeding spirally.

The second pretreatment injection means 114 is connected to the pretreatment gas outlet 1113 located at the lower portion of the preprocessor housing 111 through the agitation means 113. The second pretreatment injection means 114 is connected to the pre- The cleaning liquid is injected by the first pre-treatment injection means 112 to induce agglomeration of the cleaning liquid in a state of collecting harmful substances such as PM contained in the exhaust gas, thereby enlarging the size of the cleaning liquid, To flow down on the inner wall 1111 of the processor housing 111 or to fall down efficiently to the lower portion of the preprocessor housing 111.

In order to increase the size of the cleaning liquid injected by the first pretreatment injection means 112 and collecting harmful substances such as PM in the exhaust gas as described above, the second pre-treatment injection means 114, It is preferable to inject a cleaning liquid having a larger particle diameter than the cleaning liquid jetted by the jetting means 112. Specifically, it is preferable that the second pre-treatment injection means 114 injects the cleaning liquid in the form of a droplet having a particle diameter of 500 to 1,000 μm.

12 and 13, in an embodiment of the present invention, the second pretreatment injection means 114 includes a rod-shaped injection body 1141 and a plurality of branched water bodies 1141 branched from the injection body 1141 at regular intervals And a plurality of ejection openings 1143 formed at predetermined intervals in each of the ejection bores 1142. [ The jetting body 1141 can receive the cleaning liquid and the compressed air from the cleaning liquid supply unit (not shown) through the cleaning liquid inlet 1114. The jetting body 1141 receives the cleaning liquid together with the compressed air and delivers the jetted liquid to each of the jetting bases 1142. The jetting port 1143 injects the cleaning liquid toward the exhaust gas.

The second pretreatment injection means 114 forms a structure in which the injection ports 1143 for injecting the cleaning liquid are disposed more closely than the first pretreatment injection means 112, This is advantageous in uniformly spraying the cleaning liquid without a square area toward the exhaust gas flowing in the flow path spirally.

The specific shape and arrangement of the second pre-treatment injection means 114 and the like can be controlled in accordance with the distribution amount of the second pre-treatment injection means 114 and the distribution amount of the pre-processor 11 And the overall length design of the device.

The connection part 12 is a part for moving the pretreatment gas, which is an exhaust gas whose harmful substances are primarily reduced, in the preprocessor 11 to the post-processor 13. [ 4 to 6, one end of the connection part 12 communicates with the pretreatment gas outlet part 1113 of the pre-processor housing 111, and the other end is connected to the pretreatment gas inlet part 1312).

The post-processor 13 additionally removes harmful substances in the pretreatment gas, which is an exhaust gas whose toxic substances are primarily reduced by the preprocessor 11. 3 to 5 and 14, the post-processor 13 includes a post-processor housing 131, a diffusion unit 132, a packing 133, a packing support unit 134, a first post- 135, the second post-treatment injection means 136, the water separating means 137, the cleaning means 138, and the irrigation blocking means 139.

The post-processor housing 131 forms a contour of the post-processor 13 and forms a flow path of the pretreatment gas therein. The post-processor housing 131 includes an inner wall 1311, a pretreatment gas inlet 1312, a post-treatment gas outlet 1313, and a rinse solution outlet 1315. 4 and 14, in an embodiment of the present invention, the post-processor housing 131 is formed as a cylindrical tower, and moves the pre-treatment gas introduced through the lower one side upward, Thereby forming a flow path through which harmful substances can be additionally removed.

The inner wall 1311 is a part forming the flow path of the pretreatment gas in the post-processor housing 131. Referring to FIGS. 4 and 14, the inner wall 1311 forms a flow path of the exhaust gas into the post-processor housing 131 in a cylindrical shape.

The pre-treatment gas inlet 1312 is a portion into which the pretreatment gas flows into the post-processor housing 131. 4 to 6 and FIG. 14, the pretreatment gas inlet 1312 is formed at a lower side of the post-processor housing 131, and the pretreatment gas introduced through the pretreatment gas inlet 1312 Is moved upward along a cylindrical flow path formed by the inner wall 1311.

The post-treatment gas outlet 1313 is a portion through which the post-treatment gas, which is a pretreatment gas from which the harmful substances are further removed, is discharged from the post-processor 13. As shown in FIGS. 4 to 6 and FIG. 14, the post-treatment gas outlet 1313 is formed in the upper portion of the post-processor housing 131, and is discharged through the post-treatment gas outlet 1313 The process gas can be released to the atmosphere as the removal of harmful substances from the exhaust gas is performed by the pre-processor (11) and the post-processor (13).

The cleaning liquid inlet 1314 is a portion into which the cleaning liquid to be injected from the inside of the post-processor 13 flows. 4 and 14, the cleaning liquid inlet 1314 is connected to the first post-treatment injection means 135, the second post-treatment injection means 136 and the cleaning means 138, respectively, Or formed.

The cleaning liquid outlet 1315 is connected to the first post-processing injection unit 135 or the second post-processing unit 135 to remove harmful substances in the pretreatment gas introduced into the post-processor housing 131 through the pre- And is a portion where the cleaning liquid injected by the second post-treatment injection means 136 is discharged. 4 to 6 and 14, the cleaning liquid outlet 1315 is formed at the lower end of the post-processor housing 131. The cleaning liquid outlet 1315 is connected to the cleaning liquid outlet 1315 through the cleaning liquid outlet 1315, The cleaning liquid injected by the processing injection means 135 and the second post-processing injection means 136 collects the harmful substances in the pretreatment gas and is moved to the lower end of the post-processor housing 131 to be discharged to the outside do. In order to smoothly discharge the cleaning liquid, the lower end of the post-treatment housing 131 is preferably formed to converge toward the cleaning liquid outlet 1315.

The diffusing means 132 diffuses the pre-treatment gas introduced through the pre-treatment gas inlet 1312 and disposed adjacent to the pre-treatment gas inlet 1312 in the post-processor housing 131. 15 to 17, the diffusing unit 132 is disposed in front of the pretreatment gas inlet 1312 and includes a body 1321 and a fastening unit 1322. [

The body 1321 is a member that covers the front of the pretreatment gas inlet 1312 and has a diffusion portion 1321a through which the pretreatment gas can pass. The body 1321 may be formed of a plate-like member. As shown in FIGS. 16 and 17, the body 1321 is formed so as to vertically cover the front of the pretreatment gas inlet 1312. The upper and lower ends of the body 1321 are connected to the pre- And may be formed in an inclined or curved shape toward the inflow portion 1312 side.

The upper end of the body 1321 is formed to be inclined upward toward the pretreatment gas inlet 1312 and the lower end of the body 1321 is inclined downward toward the pretreatment gas inlet 1312 side Respectively. Through this shape of the body 1321, the pretreatment gas introduced through the pretreatment gas inlet 1312 can be uniformly diffused forward and upward and downward. The body 1321 may be formed not only in an upper portion and a lower portion in a shape that is inclined or curved, but also in a generally curved shape.

The diffusion portion 1321a may include a plurality of through holes, and the diffusion portion 1321a may be formed with a plurality of uniformly formed through holes. However, the diffusion part 1321a is not limited to the through hole, and the diffusion part 1321a may be formed in the form of a slit or the like.

The size and shape of the body 1321 and the shape and the number of the diffusion portions 1321a may vary depending on the processing capacity of the post processor 13 and the like.

The fastening portion 1322 is a portion that is fastened to the fixing portion 1311b formed in the post-processor housing 131 so that the diffusion means 132 can be fixed inside the post-processor housing 131 . 15 and 16, the fastening portion 1322 is vertically extended or bent from the left and right ends of the body 1321 toward the pretreatment gas inlet 1312, To be fixed to the interior of the post-processor housing 131 by being fastened to the fixing portion 1311b formed in the post-processor housing 131. [

Since the flow path of the pretreatment gas, which is an exhaust gas whose reduction of harmful substances is primarily performed by the preprocessor 11, is changed by the agitating means 113 in a spiral manner, it flows out to the pretreatment gas outlet 1312 And flows into the pretreatment gas inlet 1312 via the connection portion 12, the gas has a certain amount of rotational energy. Accordingly, the flow of the air into the post-processor housing 131 is concentrated on the inner wall 1311 of the post-processor housing 131 toward the pretreatment gas inlet 1312, It is not uniformly dispersed in the flow path of the pretreatment gas formed in the reaction chamber.

The diffusing unit 132 functions as a nozzle by making the cross sectional area of the pre-treatment gas flow into the post-processor housing 131 to be narrower so that the pre-treatment gas flows into the post-processor housing 131 Thereby allowing uniform diffusion. So that the pretreatment gas can be uniformly dispersed on the flow path of the pretreatment gas formed in the post-treatment housing 131. That is, the pretreatment gas flowing into the packing 133 is uniformly dispersed through the diffusion unit 132, so that the absorption efficiency of the SOx of the pretreatment gas in the packing 133 can be increased, The efficiency can be improved.

15 and 16, two diffusion units 132 are disposed in front of the pre-treatment gas inlet 1312 in succession, whereby the diffusion by the diffusion unit 132 is further promoted It can be made uniform.

The packing 133 is a portion for making a contact area between the cleaning liquid injected by the first post-treatment injection means 135 and the second post-treatment injection means 136 described later and the pretreatment gas large. The packing 133 is disposed on the flow path of the pretreatment gas in the upper portion of the diffusing means 132 in the post-processor housing 131 to increase the vapor / liquid contact area of the pretreatment gas and the cleaning liquid, Or the SOx which is a harmful substance in the pretreatment gas through the cleaning liquid composed of fresh water containing an alkali additive can be smoothly performed.

And a plurality of fillers of the packing 133 are gathered. The fillers may be made of steel, ceramic, plastic, or the like. In addition, the shape of the packing 133 may be a random packing in which packing materials are gathered without a certain pattern, a structured packing having a certain pattern, or the like. The type and shape of the packing 133 may vary depending on the processing capacity and length design of the post-processor 13, and the like.

The packing support means 134 supports the packing 133 from below and diffuses the pretreatment gas. 18 and 19, the packing support means 134 covers the flow path of the pretreatment gas and has a step 1311a protruding inwardly on the inner wall 1311 of the post-processor housing 131, And supports the packing 133 placed on the upper part. In the present invention, the packing support means 134 has a diffusion function for diffusing the pretreatment gas from the lower portion of the packing 133.

The packing support means 134 includes a penetration portion 134a through which the pretreatment gas can pass and a support portion 134b for supporting the packing. Specifically, the supporting portion 134a is a strand having a cross structure, and the penetrating portion 134a is formed as a through hole formed by the supporting portion 134b. That is, the packing support means 134 forms the penetration portion 134a of the mesh structure by the support portion 134b having a cross structure. The pressure loss of the pretreatment gas can be reduced by lowering the resistance through the mesh structure.

The packing support means 134 increases the ratio of the diffusion portion 134a, that is, the ratio of the through holes of the mesh structure, thereby increasing the passage area of the pretreatment gas compared to a general mesh structure to minimize the pressure loss of the pretreatment gas Specifically, it is preferable that the area of the diffusion portion 134a and the vertical projection area of the support portion 134b are formed to be about 2 to 4: 1.

Meanwhile, as shown in FIG. 18, it is preferable that at least a part of the support part 134b has a twisted structure. If the support portion 134b has such a twisted structure, the pretreatment gas impinging on the support portion 134b among the pretreatment gases passing through the penetration portion 134a is changed in the traveling direction along the twisted direction. As a result, the pretreatment gas can be diffused more widely, and more uniform and active pretreatment gas can be dispersed and diffused.

In the present invention, the packing support means 134 does not merely support the packing 133, but also distributes the pretreatment gas introduced into the packing 133 evenly over the whole area of the lower portion of the packing 133 . As a result, the absorption efficiency of the SOx of the pretreatment gas in the packing 133 can be increased through the packing support means 134, and the collection efficiency of other harmful substances can be improved.

It is preferable that the packing support means 134 has a bending structure in which the hill portions 1341 and the valleys 1342 are continuously and continuously arranged. The continuous bending structure in parallel with each other improves the supporting force with respect to the cross sectional area, so that the packing 133 can be more stably supported by the hill 1341. Further, this structure allows the pressure of the pretreatment gas traveling toward the packing 133 to be uniformly dispersed in the packing support means 134, so that the pressure of the pretreatment gas flowing toward the packing 133 from the bottom of the packing 133 Thereby making the flowing pre-treatment gas uniformly diffuse to the lower portion of the packing 133 as a whole.

The first post-processing injection unit 135 is disposed on the flow path of the pre-processing gas among the interior of the post-processor housing 131 and injects the cleaning liquid toward the pre-processing gas. The first post-treatment injection means 135 is disposed on the upper portion of the packing 133 and injects the cleaning liquid toward the packing 133.

14, 20, and 21, in an embodiment of the present invention, the first post-processing injection unit 135 includes a rod-shaped injection body 1351, And a plurality of injection ports 1353 formed at predetermined intervals in the respective injection bosses 1352. The plurality of injection bosses 1352 are connected to the respective injection bosses 1352 through the injection body 1351, (Not shown) for supplying a cleaning liquid and compressed air to the cleaning liquid supply unit. The cleaning liquid and the compressed air supplied by the cleaning liquid supply unit (not shown) are supplied to the injection body 1351 through the cleaning liquid inlet 1314. The jetting body 1351 receives the cleaning liquid together with the compressed air and delivers the jetted liquid to each of the jetting bases 1352. The jetting port 1353 injects the cleaning liquid toward the exhaust gas.

The specific shape and arrangement of the first post-processing injection means 135 may vary depending on, for example, the distribution amount of the first post-processing injection means 135 and the overall length design of the post-processor 13.

The second post-processing injection unit 136 is disposed on the flow path of the pre-processing gas among the inside of the post-processor housing 131 to inject the cleaning liquid toward the pre-processing gas, And is operable independently. This independent operation can be performed by the control of the control unit C as shown in Fig. The controller C performs control so that the injections of the cleaning liquids of the first post-processing injection unit 135 and the second post-processing injection unit 136 can be independently performed.

14, 20, and 21, in an embodiment of the present invention, the second post-processing injection unit 136 includes a rod-shaped injection body 1361, And a plurality of ejection openings 1363 formed at predetermined intervals in the respective ejection bosses 1362. The plurality of ejection bosses 1362 are formed through the ejection body 1361, (Not shown) for supplying a cleaning liquid and compressed air to the cleaning liquid supply unit. The cleaning liquid and the compressed air supplied by the cleaning liquid supply means (not shown) are supplied to the injection body 1361 through the cleaning liquid inlet 1314. [ The jetting body 1361 receives the cleaning liquid together with the compressed air and delivers the cleaning liquid to each of the jetting bases 1362, and the jetting port 1363 ejects the cleaning liquid toward the exhaust gas.

The specific shape and arrangement of the second post-processing injection means 136 may be determined in accordance with the distribution amount of the second post-processing injection means 136 and the distribution amount of the second post-processing injection means 136, as described in connection with the first post- The overall length design of the processor 13, and the like.

The second post-processing injection means 136 independently operates with the first post-processing injection means 135 in that the second post-processing injection means 136 is connected to the first post-processing injection means 135, ≪ / RTI > or at the same time. Therefore, when the amount of the exhaust gas generated by the combustion and the amount of the pretreatment gas introduced from the preprocessor 11 changes according to the load of the engine, it is possible to spray the appropriate cleaning liquid correspondingly thereto, The economical operation of the processor 13 is achieved.

The second post-processing injection means 136 is disposed above the first post-processing injection means 135 at a predetermined interval. When the second post-processing injection means 136 and the first post-processing injection means 135 are disposed on the same horizontal plane of the flow path of the pretreatment gas, the resistance which interrupts the flow of the pretreatment gas becomes large, The second post-processing injection means 136 and the first post-processing injection means 135 are preferably arranged at different heights.

Further, the first post-processing injection means 135 and the second post-processing injection means 136 are disposed at different heights, and are disposed so as to cross each other when they are vertically projected on the flow path of the pretreatment gas Is more preferable. Through this arrangement, the cleaning liquid can be uniformly sprayed on the pretreatment gas on the pretreatment gas flow path without a rectangular area, and removal of toxic substances in the pretreatment gas can be performed more efficiently.

Hereinafter, the mechanism by which the harmful substances in the pretreatment gas are removed through the cleaning liquid injected by the first post-treatment injection means 135 and the second post-treatment injection means 136 will be described below.

The pretreatment gas includes harmful substances such as sulfur oxides (SOx) and PM, which are acidic substances. The first post-treatment injection means 135 and the second post-treatment injection means 136 neutralize The cleaning liquid is sprayed to coagulate and remove. In general, 0.1 ~ 0.5um of PM is first aggregated by fine droplets (100 ~ 200um) and becomes bigger. In addition, a basic cleaning solution is required to neutralize acidic sulfur oxides (SOx). When fresh water is used, a separate alkaline additive is added to induce a neutralization reaction.

At this time, the alkaline additive may be NaOH (sodium hydroxide), Na ₂ CO ₃ (sodium carbonate), or NaHCO ₃ (sodium bicarbonate). The neutralization reaction of sulfuric acid (SOx) by a cleaning liquid containing NaOH is as follows.

_{SO 2 (g) + 2NaOH (} aq) + (1/2) O 2 (g) → 2Na + + SO 4 2- + H 2 O

However, when the present invention is applied to a ship as described above, sea water, which is salt water, may be used as a cleaning liquid. In general, seawater contains salts such as sodium chloride (NaCl), magnesium chloride (MgCl ₂ ) and potassium chloride (KCl). PH is 7.8 ~ 8.3 due to the anions such as Cl ^- , SO ₄ ^2- and Br ^- And the like. Therefore, if such seawater is used as a cleaning liquid, there is an advantage that neutralization of sulfur oxides (SOx) can be performed without adding an additional alkaline additive.

At this time, the neutralization reaction formula by seawater is as follows. First, it is mixed with sulfur dioxide (SO ₂ ) in gaseous state.

SO _{2 (g)} + H ₂ O ₍₁₎ ↔ H ₂ SO _{3 (aq)}

Next, it reacts with the base in seawater.

2H ₂ SO _{3 (aq)} + OH ^- ↔ 2HSO ₃ ^- _(aq) + H ⁺ _(aq) + H ₂ O _(aq)

^{_{2HSO 3 - (aq) + OH}} - (aq) ↔ ² SO ₃ ^2- _(aq) + H ⁺ _(aq) + H ₂ O _(aq)

That is, sulfur dioxide is absorbed in seawater and becomes a sulfate through the above reaction.

The odd water separating means 137 is disposed on the upper portion of the second post-processing injection means 136 among the inside of the post-processor housing 131 and is connected to the flow of the pretreatment gas via the second post- It is the part that performs the role of separating the micro liquid which flows in the path. The odd water separating means 137 is disposed in a manner such that a rim portion thereof is seated on a step 1311a protruding inwardly from the inner wall 1311 of the post processor housing 131.

The odd water separating unit 137 separates, filters and collects aerosol-type droplets or mist generated by the pretreatment gas and the cleaning liquid. The odd-numbered water separating unit 137 includes a blade May be arranged at a predetermined interval. In addition, the shape of the water separation unit 137 may vary depending on the design of the post-processor 13, temperature and chemical characteristics, and the like.

The cleaning means 138 is disposed on the upper portion of the second post-processing injection means 136 and the lower portion of the water separation means 137 among the interior of the post-processor housing 131, And a cleaning liquid is sprayed toward the cleaning liquid.

14, 22, and 23, in one embodiment of the present invention, the cleaning means 138 includes a bar-shaped injection body 1381 and a plurality of nozzles 1341 branched from the injection body 1381 at regular intervals And a plurality of ejection openings 1383 formed at predetermined intervals in each of the ejection bosses 1382. The ejection bosses 1382 are connected to the respective ejection bosses 1382 through a cleaning liquid and compressed air (Not shown) for supplying a cleaning liquid to the substrate. The cleaning liquid and the compressed air supplied by the cleaning liquid supply means (not shown) are supplied to the injection body 1381 through the cleaning liquid inlet portion 1314. The jetting body 1381 supplies the cleaning liquid together with the compressed air to each of the jetting bases 1382, and the jetting port 1383 ejects the cleaning liquid toward the jetting separating means 137.

The water separating means 136 may be contaminated or occluded during the process of separating, filtering and collecting fine droplets or mist in a state of collecting harmful substances such as PM in the pretreatment gas. The separation means 137 is cleaned by the cleaning liquid, thereby preventing contamination and clogging of the water separation means 136.

In addition, the cleaning means 138 may spray a cleaning liquid to increase the size of fine droplets or mist separated by the water separating means 137, so that droplets of fine droplets or mist that collect harmful substances become large droplets, It can efficiently fall down to the lower portion of the housing 131 or flow downward through the inner wall 1311 of the post-processor housing 131.

The numerical cutoff unit 139 is a part that functions to block the water flowed out through the inner wall 1311 of the post-processor housing 131 and flowing out to the post-process gas outlet 1313. Referring to Figs. 14, 24 and 25, the numerical blocking means 139 includes a blocking wall 1391. In addition, the water blocking means 139 forms a trapping space 1392 for trapping water in the vicinity of the after-treatment gas outlet 1313 to prevent water droplets from flowing out to the outside. The collection space 1392 is formed in such a form that the collected water drops can be dropped downward.

The post-processing gas outlet 1313 is formed on the upper portion of the post-processor housing 131 in an upward direction, and the numerical cutoff unit 139 is disposed below the post-processing gas outlet 1313 in a downward direction And includes an extended blocking wall 1391. The blocking wall 1391 forms a trapping space 1392 between upper end inner walls of the housing 131 of the post-processor. The upper end wall 1311 of the housing 131 of the post-processor is converged toward the post-process gas outlet and is formed in a sloping shape. The blocking wall 1391 effectively forms the trapping space 1392, It is preferable to extend vertically downward to efficiently block the external discharge of the enemy.

The pretreatment gas rises along the flow path of the pretreatment gas formed in the post-treatment unit 13, and is discharged as a post-treatment gas through the post-treatment gas outflow 1313 while the toxic substances are further removed. In this process, some of the number of cleaning liquids collected in the pretreatment gas is collected on the inner wall 1311 of the post-processor housing 131 and moved toward the post-processor outlet 1313.

The water droplets that have moved to the vicinity of the rim of the after-treatment gas outlet 1313 on the upper inner wall 1311 of the post-processor housing 131 are caught by the blocking wall 1391. A trapping space 1392 is formed between the blocking wall 1391 and the inner wall 1311 of the post-processor housing 131 around the post-processing gas outlet 1313 so that water droplets can cohere with each other. The number of particles in the trapping space 1392 coalesces and the size and weight of the particles accumulate in the trapping space 1392 and fall to the bottom of the post-processor housing 131.

Thus, the water blocking unit 139 prevents the water collected from the pre-treatment gas from collecting the harmful substances from being discharged to the outside through the post-processor outlet 1313, and is separated into the lower part of the post-processor housing 131 Let it fall.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be interpreted as falling within the scope of.

1: Exhaust gas treatment device
2: Manifold
3a, 3b, 3c: Combustion device
4: Piping section
41: transfer conduit 41b: bypass conduit
411, 421, 431: Reverse flow prevention means 412, 422, 432:
11: preprocessor
111: Pre-processor housing
1111: inner wall 1112: exhaust gas inlet
1113: Pretreatment gas outlet 1114: Cleaning liquid inlet
1115:
112: first pretreatment injection means 113: stirring means
114: second pre-treatment injection means
12: Connection
13: Post-processor
131: Postprocessor housing
1311: inner wall 1312: pretreatment gas inlet
1313: post-treatment gas outlet part 1314: cleaning liquid inlet part
1315:
132: diffusion means 133: packing
134: Packing support means 135: First post-treatment injection means
136: second post-treatment injection means 137:
138: Cleaning means 139: Numerical blocking means

Claims (11)

An exhaust gas processing device for introducing an exhaust gas generated by combustion and injecting a cleaning liquid into the exhaust gas to remove harmful substances in the exhaust gas;
And a piping section for transferring the exhaust gas from the two or more combustion apparatuses for generating exhaust gas by combustion to the exhaust gas processing apparatus,
Characterized in that the piping section includes backflow preventing means capable of preventing backflow of the cleaning liquid from the exhaust gas processing apparatus to the combustion apparatus whose operation is stopped when the combustion apparatuses are stopped in operation, Processing system.
The method according to claim 1,
Wherein the piping section includes a transfer conduit for connecting the combustion devices and the exhaust gas processing device in a one-to-one correspondence relationship and for transferring the exhaust gas from each of the combustion devices to the exhaust gas treatment device,
Wherein the backflow prevention means is disposed in each of the transfer conduits so as to block connection between the combustion device and the exhaust gas treatment device.
3. The method of claim 2,
Wherein the piping section further includes a bypass conduit branching between each combustion device and each of the backflow prevention means among the transfer conduits to provide a bypass to the exhaust gas generated in each combustion device. Exhaust gas treatment system.
The method of claim 3,
Further comprising blocking means disposed in each of said bypass conduits for blocking bypass of said exhaust gas to bypass conduits. ≪ Desc / Clms Page number 17 >
3. The method of claim 2,
Wherein the piping section further comprises a manifold for allowing the exhaust gas, which has passed through each of the transfer conduits, to flow together into the exhaust gas processing apparatus.
The method according to claim 1,
Wherein the exhaust gas treatment system having the backflow prevention means is installed in the vessel, and the harmful substance includes sulfur oxides (SOx).
7. The method according to any one of claims 1 to 6,
The exhaust gas processing apparatus includes:
A pretreatment unit for primarily reducing harmful substances in the exhaust gas generated by combustion, and a post-treatment unit for additionally removing harmful substances in the pretreatment gas, which is an exhaust gas whose primary harmful substances have been reduced by the pretreatment unit, Lt; / RTI >
The pre-
And a pretreatment gas outlet through which the exhaust gas flowing in the exhaust gas flows and a pretreatment gas flowing out from the pretreater, which is an exhaust gas whose primary harmful substances have been reduced, A first agitating means disposed between the exhaust gas inlet and the agitating means for injecting the cleaning liquid into the exhaust gas flowing through the exhaust gas inlet, And a second pre-treatment spraying unit disposed between the agitating unit and the pre-treatment gas outflow unit for spraying the cleaning liquid into the exhaust gas flowing in a curved shape through the flow path through the agitating unit. And a backflow preventing means for preventing backflow of the exhaust gas.
8. The method of claim 7,
The post-
A pretreatment gas inlet for introducing the pretreatment gas and a post-treatment gas outlet for exhausting the post-treatment gas after the toxic substances are further removed by the post-processor, ,
And a water blocking means for blocking the water flowing upward through the inner wall of the post-processor housing and flowing out to the post-treatment gas outlet portion.
9. The method of claim 8,
Wherein the post-processor is provided at a lower portion of the water-
A first post-treatment jetting unit disposed on a flow path of the pretreatment gas to jet a cleaning liquid toward the pretreatment gas,
Further comprising second post-treatment injection means disposed on a flow path of the pretreatment gas and injecting a cleaning liquid toward the pretreatment gas, the second post-treatment injection means being operated independently from the first post-treatment injection means Exhaust gas treatment system.
10. The method of claim 9,
The post-
A packing disposed at a lower portion of the first post-processing injection means and the second post-processing injection means in the post-processor housing,
Further comprising packing support means having a diffusion function for supporting the packing at the bottom and diffusing the pretreatment gas at the bottom of the packing.
11. The method of claim 10,
Wherein the post-processor further includes diffusion means disposed adjacent to the pretreatment gas inlet and diffusing the pretreatment gas introduced through the pretreatment gas inlet.

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