WO2019212317A1

WO2019212317A1 - Exhaust gas scrubber having mixing means

Info

Publication number: WO2019212317A1
Application number: PCT/KR2019/005390
Authority: WO
Inventors: 이수태; 이수규; 김용섭; 진성재
Original assignee: 주식회사 파나시아
Priority date: 2018-05-04
Filing date: 2019-05-07
Publication date: 2019-11-07
Also published as: KR102039008B1

Abstract

The present invention relates to an exhaust gas scrubber having a mixing means and, more specifically, to an exhaust gas scrubber in an exhaust gas treatment apparatus for treating exhaust gas generated by combustion, the exhaust gas treatment apparatus including a mixing means for mixing the exhaust gas and a cleaning solution, wherein the mixing means includes a spraying part and a mixing part, the mixing part includes a plurality of bent blades for guiding a bypass flow of the exhaust gas, and the spraying part is positioned in front of the blades with respect to the flow of the exhaust gas so as to spray the cleaning solution in the direction corresponding to the flow of the exhaust gas, thereby minimizing pressure loss and, particularly, the blades are arranged vertically to the flow direction of the exhaust gas, and have guide surfaces and mixing surfaces so as to guide the flow of the exhaust gas in a predetermined direction while increasing the frequency of collision between the exhaust gas and the cleaning solution, and the mixing means is provided inside a connecting part of the exhaust gas treatment apparatus.

Description

Exhaust scrubber with mixing means

The present invention relates to an exhaust gas scrubber having mixing means, and more particularly, to an exhaust gas treating apparatus for treating exhaust gas generated by combustion, the exhaust gas treating apparatus mixing means for mixing the exhaust gas and the cleaning liquid. The mixing means includes an injection unit and a mixing unit, wherein the mixing unit includes a plurality of blades of a curved shape for guiding the bypass flow of the exhaust gas, wherein the injection unit is based on the flow of the exhaust gas blades The pressure loss is minimized by injecting the cleaning liquid in a direction coinciding with the flow of exhaust gas, and the vanes are disposed perpendicularly to the flow direction of the exhaust gas, and the guide surface and the mixing surface are formed to form a mixture with the exhaust gas. The flow rate of the exhaust gas is guided in a constant direction while increasing the number of collisions of the cleaning liquid. It relates to an exhaust gas scrubber, characterized in that provided in the internal connection of the gas treatment device.

Most modern ships have engines and boilers for their own power and heating. In order to drive the engine and the boiler, fuel must be burned, and the exhaust gas generated during the combustion process includes harmful substances such as sulfur oxide (SOx), nitrogen oxide (NOx), and PM (particular matter, particulate matter). have.

Sulfur oxides and nitrogen oxides can act on the mucous membranes of the human body and cause respiratory diseases. It is also a pollutant designated by the World Health Organization as a first-class carcinogen. In addition, when SOx or NOx is released into the air as it is, it reacts with moisture (H ₂ O) in the air to become sulfuric acid (H ₂ SO ₄ ) and nitric acid (HNO ₃ ), respectively, which may be a major cause of acid rain.

PM is a form of small particles compared to gaseous pollutants. When PM in exhaust gas is released into the air, it may cause visibility problems to reduce the visibility, or fine particles may enter the human body through the lungs or respiratory organs and cause various diseases. . Recently, the fine dust which is a problem in Korea is also caused by the PM and can be regarded as a major cause of air pollution.

Therefore, it is necessary to prevent the harmful substances in the exhaust gas. Especially in the case of ships, the engine output is huge, and it is known to emit 130 times the exhaust gas of a passenger car. Specific and practical measures for the exhaust gas of ships are required.

Accordingly, the International Maritime Organization (IMO) has established an emission control area (ECA) to limit the emissions of hazardous substances in the sea area. In particular, the SOx Emission Control Area (SECA) is more broadly regulated than the ECA, which also regulates other harmful substances such as NOx, and imposes strong sanctions.

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

In addition, legislation to reduce the SOx content in the exhaust gas to 3.5% or less in the world's waters other than the ECA was passed by the IMO General Assembly held on October 28, 2016 to 0.5%. Regardless, the need for sulfur oxide management is increasing.

To comply with these international regulations, low sulphur is used, or LNG propulsion vessels are used, which are fueled by natural gas with low sulfur oxide emissions, but scrubbers are used to reduce the sulfur oxides in the exhaust gas. Sometimes.

The post-treatment process using a scrubber is economically advantageous because it can satisfy the above regulations and prevent environmental pollution even with a low-cost fuel having a relatively high sulfur content. As such, the scrubber can satisfy both economic and environmental aspects, so it is highly versatile enough to be used not only in ships but also in power plants.

U.S. Patent No. US 9,272,241 (registered Mar. 1, 2016) "COMBINED CLEANING SYSTEM AND METHOD FOR REDUCTION OF SOX AND NOX IN EXHAUST GASES FROM A COMBUSTION ENGINE"

The invention shown in the above patent document discloses a scrubber for absorbing SOx and PM in exhaust gas. The scrubber ionizes the SOx into the cleaning solution. At this time, using sea water having a pH of about 8.3 can neutralize the ionized sulfur oxide without a separate alkaline additive. In addition, the particulate matter may be aggregated and discharged together in the cleaning liquid to prevent its release into the atmosphere.

However, the present invention only shows a schematic diagram of the circulation process of the exhaust gas and the cleaning liquid including the scrubber, and does not mention the specific shape of the scrubber and the cleaning method.

Since the scrubber has a very long shape up and down, it occupies a large volume of the ship, which is inefficient in terms of space utilization and damages the aesthetics of the ship. There is therefore a need for a method of lowering the height of the scrubber, which does not disclose a solution to this problem at all.

When the exhaust gas flowing into the scrubber is dispersed evenly in the processor, the working efficiency using the cleaning liquid is increased, and there is no configuration therefor.

In addition, the mixing method can be regarded as one of the important performances of the scrubber because the cleaning time and the contact area between the cleaning solution and the exhaust gas must be smoothly mixed, so that the mixing method can be regarded as one of the important performances of the scrubber. Not.

In addition, when passing through the scrubber during the discharge of the exhaust gas, pressure loss occurs due to seawater injection for cleaning and path obstruction due to the structure, although the pressure loss is quantified to be used as a data indicating the performance of the scrubber. The above document does not provide a solution for this.

It is also a problem when the cleaning liquid, such as seawater injected into the scrubber flows back down and flows into the engine, the boiler and the like out of the exhaust gas, the patent document does not describe the countermeasure.

The amount of exhaust gas discharged varies depending on the load of an engine or a boiler, and the above-described patent invention that sprays cleaning liquids in a batch without considering such a change in flow has a problem of inefficient operation. A filter such as a demister (a separator) for removing particles of the cleaning liquid in the exhaust gas has to be cleaned by clogging a hole when it is used for a long time, and a method for cleaning the demister is also required.

Finally, there is a need to prevent the cleaning liquid absorbing the harmful substances in the exhaust gas is discharged into the atmosphere along the flow of the exhaust gas.

Therefore, it minimizes the pressure loss of the exhaust gas and distributes it evenly, and the sulfur oxide and PM are mixed with the cleaning liquid effectively to remove harmful substances, and only the clean gas is discharged while reducing the volume of the scrubber to increase the space utilization, depending on the engine load There is a need for an exhaust gas treatment device that can flexibly adapt to improve work efficiency and prevent engine backflow of cleaning fluids.

The present invention is to solve the above problems of the prior art,

It is an object of the present invention to provide an exhaust gas treatment apparatus comprising a mixing means to improve the efficiency of the cleaning operation by inducing the mixing of the exhaust gas and the cleaning liquid.

Another object of the present invention is to provide an exhaust gas treating apparatus, characterized in that the mixing portion includes a plurality of vanes for guiding the bypass flow of the exhaust gases, and the exhaust gases are efficiently mixed with the cleaning liquid by bent and flowing through the vanes. .

Still another object of the present invention is to provide an exhaust gas treating apparatus, which can minimize the pressure loss of the exhaust gas by spraying the cleaning liquid in the flow direction of the exhaust gas.

Still another object of the present invention is to provide an exhaust gas treatment apparatus, in which a plurality of vanes of the mixing means are arranged in a small size, thereby narrowing the flow area so that collision of the exhaust gas and the cleaning liquid occurs actively, thereby maximizing the cleaning efficiency. It is.

Still another object of the present invention is to provide an exhaust gas treating apparatus, in which a cleaning liquid is injected between each blade to increase collision with the exhaust gas flowing through the blades, thereby maximizing the cleaning efficiency.

Still another object of the present invention is to provide an exhaust gas treating apparatus, wherein the wing is bent and a guide surface is formed at one end to bypass the exhaust gas, thereby forming a bypass flow of the exhaust gas.

Another object of the present invention,

The vane includes a mixing surface located on the opposite side of the guide surface, the mixing surface further comprises the first surface, the second surface, the third surface including exhaust gas, characterized in that for controlling the bypass flow of the exhaust gas It is to provide a processing device.

Still another object of the present invention is to provide an exhaust gas treating apparatus, wherein the wings are all arranged in the same direction to guide the flow of the exhaust gas from the wings in a certain direction.

Still another object of the present invention, the injection portion includes a spraying rod for supplying the cleaning liquid, and the injection hole is coupled to one side of the spraying rod for spraying the cleaning liquid, the spraying rod is developed perpendicular to the exhaust gas flow direction, The injection port is to provide an exhaust gas treatment device, characterized in that spaced apart by a predetermined interval so as to spray the cleaning liquid between each wing.

Another object of the present invention is to further remove the harmful substances in the pretreatment gas, which is primarily a harmful substance reduced in the exhaust gas generated by combustion, and the pretreatment gas which is the exhaust gas in which the harmful substances are primarily reduced by the pretreatment. It includes a processor, wherein the after-treatment is to provide an exhaust gas treatment apparatus comprising a water droplet blocking means for blocking the water drops flowing out through the inner wall of the housing of the after-treatment to the after-treatment gas outlet.

It is still another object of the present invention to provide an exhaust gas treating apparatus for effectively preventing water droplets from flowing out of the aftertreatment by forming a collecting space for collecting water droplets near the aftertreatment gas outlet. To provide.

Still another object of the present invention is to provide an exhaust gas treating apparatus in which the collecting space is formed in a form in which collected droplets fall into the interior of the after-treatment unit.

Still another object of the present invention is to provide an exhaust gas treating apparatus for efficiently forming a collecting space for collecting water droplets, including a barrier wall extending downward from an edge of the aftertreatment gas outlet. It is.

Still another object of the present invention is characterized in that the aftertreatment is capable of injecting a plurality of cleaning solutions toward the pretreatment gas, and thus an exhaust gas treatment device that enables economical operation of adjusting the injection amount of the cleaning solution according to the load of the engine. To provide.

Still another object of the present invention is to provide an exhaust gas treating apparatus for supporting a packing disposed on a flow path of a pretreatment gas at a lower portion thereof while diffusing the pretreatment gas.

Still another object of the present invention is to provide an exhaust gas treating apparatus for spreading a pretreatment gas introduced into an aftertreatment to an opposite end of a housing.

Still another object of the present invention is to provide an exhaust gas treatment device for maximizing treatment efficiency by uniformly dispersing pretreatment gas introduced into the post processor throughout the housing.

Still another object of the present invention is that each body of the diffusion means is configured to overlap a part when viewed in the exhaust gas flow direction exiting from the connecting portion to prevent the exhaust gas to escape without passing through the diffusion means to maximize the dispersion effect It is to provide a gas treatment apparatus.

Another object of the present invention is to improve the space utilization and harmfulness by allowing the cleaning liquid to be double sprayed on the flow path of the exhaust gas flowing through the interior of the pretreatment that primarily reduces harmful substances in the exhaust gas generated by combustion It is to provide an exhaust gas treatment apparatus that exhibits a material removal efficiency.

Still another object of the present invention is to provide an exhaust gas treating apparatus which is applied to a vessel and enables to efficiently remove harmful substances including sulfur oxides (SOx) in exhaust gases discharged from an engine or a boiler of the vessel. will be.

The present invention is implemented by the embodiment having the following configuration to achieve the above object.

According to one embodiment of the invention, the exhaust gas treatment apparatus of the present invention, in the exhaust gas treatment apparatus for processing the exhaust gas generated by the combustion, the exhaust gas treatment apparatus mixing means for mixing the exhaust gas and the cleaning liquid Including the efficient cleaning of the exhaust gas is characterized in that possible.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the mixing means includes an injection unit for injecting the cleaning liquid and a mixing unit for mixing the cleaning liquid and the exhaust gas.

According to another embodiment of the present invention, the exhaust gas treatment apparatus of the present invention, the mixing portion comprises a plurality of blades for guiding the bypass flow of the exhaust gas, the exhaust gas is bent and flows to the blades to efficiently mix with the cleaning liquid It is characterized by.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the injection unit injects the cleaning liquid in the exhaust gas flow direction to minimize the pressure loss.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the injection unit injects the cleaning liquid in the direction between the blades.

According to another embodiment of the present invention, the exhaust gas treatment device of the present invention, the blade is bent, characterized in that to form a bypass flow of the exhaust gas by forming a guide surface to bypass the exhaust gas at one end.

According to still another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the vane includes a mixing surface located on the opposite side of the guide surface.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the center of curvature of the mixing surface is located in an opposite direction to the center of curvature of the guide surface.

According to another embodiment of the present invention, the exhaust gas treatment apparatus of the present invention, the mixing surface is characterized in that it comprises a first surface for guiding the flow of incoming exhaust gas in the opposite direction.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention, wherein the mixing surface includes a second surface extending at an angle in the inflow direction of the exhaust gas at the end of the first surface. It is done.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention, wherein the mixing surface comprises a third surface extending at an angle in the inflow direction of the exhaust gas at the end of the second surface. It is done.

According to still another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the plurality of vanes are arranged perpendicular to the exhaust gas flow direction.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the blades are all arranged in the same direction to guide the flow of the exhaust gas exiting the blade in a constant direction.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention, the injection unit includes a spraying rod for supplying the cleaning liquid, and the injection hole is coupled to one side of the spraying rod to spray the cleaning liquid, It is developed perpendicular to the exhaust gas flow direction, characterized in that the injection port is spaced apart at regular intervals so as to spray the cleaning liquid between each wing.

According to another embodiment of the present invention, the exhaust gas treatment apparatus of the present invention, the exhaust gas treatment device is a pre-treatment for pretreatment of the exhaust gas, a post-treatment for post-treatment of the pre-treatment gas from the pre-processor; It includes a connecting portion for connecting the preprocessor and the post processor, wherein the mixing means is characterized in that provided inside the connection.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention, the diffusion means for injecting the exhaust gas to the after-treatment gas inlet to which the after-treatment is connected to the connector to be evenly distributed in the after-treatment. It is characterized by including.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the diffusion means is arranged with a plurality of bodies are arranged up and down to achieve the maximum dispersion effect.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the upper side and the lower side is bent backward based on the direction of the exhaust gas flow so that the body diffuses the exhaust gas.

According to another embodiment of the present invention, the exhaust gas treatment apparatus of the present invention is characterized in that the body is formed with a plurality of through holes to diffuse the exhaust gas.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention, the after-treatment means is disposed on the flow path of the pre-treatment gas and the first post-treatment injection means for spraying the cleaning liquid toward the pre-treatment gas, It is characterized in that it further comprises a second after-treatment injection means disposed on the flow path of the pre-treatment gas to inject a cleaning liquid toward the pre-treatment gas, but operates independently of the first after-treatment injection means.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the first after-treatment injection means and the second after-treatment injection means selectively or simultaneously spray the cleaning liquid.

According to still another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the second aftertreatment injection means is disposed on the upper portion of the first aftertreatment injection means at a predetermined interval.

According to another embodiment of the present invention, in the exhaust gas treating apparatus of the present invention, the first after-treatment injection means and the second after-treatment injection means cross each other in the vertical projection on the flow path of the pretreatment gas Characterized in that arranged.

According to another embodiment of the present invention, in the exhaust gas treating apparatus of the present invention, the after-treatment unit is disposed on the first after-treatment injection means and the second after-treatment injection means, the first after-treatment injection means And water separation means for separating a washing liquid flowing through the flow path of the pretreatment gas through the second aftertreatment injection means, upper portions of the first aftertreatment injection means and the second aftertreatment injection means, and the radix separation means. It is characterized in that it further comprises a washing means disposed in the lower portion of the spraying the cleaning liquid toward the water separation means.

According to another embodiment of the present invention, in the exhaust gas treatment apparatus of the present invention, the post-treatment is a packing disposed in the lower portion of the first post-processing means and the second post-processing means in the post-processor housing; And it is characterized in that it further comprises a packing support means for supporting the packing at the bottom but having a diffusion function for diffusing the pretreatment gas from the bottom of the packing.

According to another embodiment of the present invention, the exhaust gas treatment apparatus of the present invention, the packing support means includes a through portion formed so that the pretreatment gas can pass and the support portion for supporting the packing, the support portion crosses It is a strand having a structure, characterized in that the through portion formed by a through hole formed by the support portion.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the support has a structure in which at least a portion of the twisted.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the ratio of the through portion is greater than the ratio of the support portion.

According to another embodiment of the present invention, the exhaust gas treating apparatus of the present invention is characterized in that the exhaust gas treating apparatus is installed in a ship, and the harmful substance includes sulfur oxide (SOx).

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

The present invention has an effect of improving the efficiency of the cleaning operation by inducing mixing of the exhaust gas and the cleaning liquid, including the mixing means.

The present invention provides an effect that can minimize the pressure loss of the exhaust gas by spraying the cleaning liquid in the flow direction of the exhaust gas.

According to the present invention, as the blades of the mixing means are arranged in small sizes, the flow area is narrowed so that the collision of the exhaust gas and the cleaning liquid is actively generated, thereby maximizing the cleaning efficiency.

The present invention has the effect of maximizing the cleaning efficiency by increasing the collision with the exhaust gas is bent by spraying the cleaning liquid between each wing.

According to the present invention, the wing is curved, but at one end, a guide surface is formed to bypass the exhaust gas, thereby forming a bypass flow of the exhaust gas, thereby increasing the collision between the harmful substances of the exhaust gas and the cleaning liquid, thereby increasing the cleaning efficiency.

The present invention has an effect that the cleaning efficiency is increased by inducing a rapid mixing of the exhaust gas and the cleaning liquid, including the mixing surface located on the opposite side of the guide surface.

According to the present invention, the mixing surface includes a first surface, a second surface, and a third surface, and thus the degree of mixing of the exhaust gas and the cleaning liquid and the amount of the outflow of the exhaust gas can be adjusted.

The present invention includes a preprocessor that primarily reduces harmful substances in the exhaust gas generated by combustion, and a postprocessor that additionally removes harmful substances in the pretreatment gas, which is an exhaust gas in which harmful substances are primarily reduced by the preprocessor. The after-treatment has an effect of providing an exhaust gas treatment apparatus comprising a water drop blocking means for blocking the water drops flowing out through the inner wall of the housing of the after-treatment to the after-treatment gas outlet.

The present invention has an effect of providing an exhaust gas treating apparatus for effectively preventing water droplets from flowing out of the aftertreatment by forming a collecting space for collecting water droplets near the aftertreatment gas outlet. .

The present invention has an effect that the collection space is formed in the form of the collected water drops to the interior of the after-treatment to provide an exhaust gas treatment device capable of efficient treatment of water droplets.

The present invention provides the effect of providing an exhaust gas treatment device for efficiently forming a collecting space for collecting water droplets, including a barrier wall extending downward from the edge of the aftertreatment gas outlet. .

The present invention is characterized in that the after-treatment is capable of injecting a plurality of cleaning liquids toward the pre-treatment gas, the effect of providing an exhaust gas treatment apparatus that enables an economical operation to adjust the injection amount of the cleaning liquid in accordance with the load of the engine Shows.

The present invention has an effect of providing an exhaust gas treatment apparatus comprising a packing support means having a diffusion function for supporting the packing disposed on the flow path of the pretreatment gas from the bottom, but to diffuse the pretreatment gas. do.

According to the present invention, the aftertreatment unit has an effect of diffusing the pretreatment gas introduced into the housing to the opposite end of the housing.

The present invention has the effect of maximizing the treatment efficiency by evenly dispersing the pretreatment gas introduced into the interior of the entire housing.

The present invention has an effect of maximizing the dispersion effect by preventing the exhaust gas from escaping without passing through the diffusion means by partially overlapping each body of the diffusion means when viewed in the exhaust gas flow direction exiting from the connection portion.

The present invention exhibits improved space utilization and harmful substance removal efficiency by allowing the cleaning solution to be injected twice on the flow path of the exhaust gas flowing inside the preprocessor, which primarily reduces harmful substances in the exhaust gas generated by combustion. It provides an effect of providing an exhaust gas treatment device.

The present invention is applied to a ship, it discloses the effect of providing an exhaust gas treatment apparatus that enables to efficiently remove the harmful substances including sulfur oxides (SOx) in the exhaust gas discharged from the engine or boiler of the vessel.

1 is a perspective view of an exhaust gas treating apparatus according to an embodiment of the present invention;

2 is a perspective view of the exhaust gas treatment apparatus according to an embodiment of the present invention

3 is a cross-sectional view taken along the line A-A 'of FIG.

4 is a reference diagram illustrating a process of treating exhaust gas in the cross section of FIG. 3.

5 is a cutaway perspective view of the preprocessor

FIG. 6 is a1-a1 sectional view taken along the line A of FIG.

FIG. 7 is a2-a2 'cross-sectional view of section A of FIG.

8 is a cross-sectional view of the connecting portion

9 is a plan view of the connecting portion

10 is a reference diagram showing the flow of the exhaust gas and the cleaning liquid in FIG.

11 is a detail of the wing of FIG. 10.

12 is a perspective view of the connecting portion

13 is a cutaway perspective view of the post processor

FIG. 14 is a sectional view taken along the line d1-d1 'of the section D in FIG.

15 is a cross-sectional view taken along the line d2-d2 'of the section D of FIG.

16 is a perspective view of the diffusion means;

17 is a perspective view of the packing support means

18 is a cross-sectional view taken along line B-B 'of FIG.

FIG. 19 is a cross-sectional view of section e1-e1 'of section E of FIG.

20 is a cross-sectional view taken along section e2-e2 'of section E of FIG.

FIG. 21 is a cross-sectional view taken along the line f-f 'in FIG.

FIG. 22 is a reference diagram illustrating a washing process in FIG. 21.

FIG. 23 is a sectional view taken along the line g-g 'of FIG. 13;

FIG. 24 is a reference diagram illustrating a water blocking process in FIG. 23.

Hereinafter, with reference to the accompanying drawings, the exhaust gas scrubber according to the present invention will be described in detail. Unless otherwise defined, all terms in this specification are equivalent to the general meaning of the terms understood by those of ordinary skill in the art to which the present invention pertains and, if they conflict with the meanings of the terms used herein, Follow the definition used in the specification. In addition, detailed description of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

Exhaust gas in the present invention refers to a gas generated in the process of burning fuel to drive a combustion device such as an engine, a boiler, etc., the harmful substances in the exhaust gas is sulfur oxide (SOx) contained in the exhaust gas , Nitrogen oxide (NOx), PM (Particular Matter, particulate matter) and the like. Exhaust gas treatment apparatus according to the present invention is the main purpose of the exhaust gas treatment in ships, but the use is not limited to the ship.

1 to 3, an exhaust gas treating apparatus according to an embodiment of the present invention includes a preprocessor 11, a connection part 12, and a post processor 13.

Referring to Figure 4, briefly look at the process of the exhaust gas proceeds in the exhaust gas treatment apparatus as follows. In FIG. 4, the thick arrow indicates the flow of gas, the dotted line indicates the cleaning liquid to be injected, and the thin arrow indicates the cleaning liquid to be discharged.

When the exhaust gas generated by the combustion flows in through the exhaust gas inlet 1112, the pretreatment 11 makes the first harmful gas to be reduced pretreatment gas and discharges it through the pretreatment gas outlet 1113. The connection part 12 moves the pretreatment gas to the postprocessor 13. The aftertreatment unit 13 additionally removes harmful substances from the pretreatment gas introduced through the pretreatment gas inlet unit 1312 and discharges it through the aftertreatment gas outlet unit 1313.

In order to remove harmful substances in the exhaust gas from the pretreatment unit 11, the cleaning liquid used to flow into the cleaning liquid inlet 1114 of the pretreatment unit 11 and the harmful substances of the pretreatment gas in the post-treatment unit 13 are used. The cleaning solution introduced into the cleaning solution inlet 1314 of the aftertreatment unit 13 for removal is discharged through the cleaning solution outlet 1315 formed at the lower portion of the aftertreatment unit 13.

When the present invention is applied to a ship, the cleaning liquid may be used as a fresh water, such as sea water or alkali additives, the exhaust gas is generated in the combustion process of the engine or boiler of the ship, the harmful substance is sulfur oxides (SOx) and PM may mean.

The preprocessor 11 serves to primarily reduce harmful substances in the exhaust gas generated by combustion. As can be seen through FIGS. 2 to 5, the preprocessor 11 includes a preprocessor housing 111, a first pretreatment injection means 112, and a second pretreatment injection means 114.

The preprocessor housing 111 forms an external shape of the preprocessor 11 and forms a flow path of the exhaust gas therein. The preprocessor housing 111 includes an inner wall 1111, an exhaust gas inlet 1112, a pretreatment gas outlet 1113, and a cleaning liquid inlet 1114. 1 to 5, in one embodiment of the present invention, the preprocessor housing 111 is formed as a cylindrical tower, and moves the introduced exhaust gas from the top of the preprocessor housing 111 to the bottom thereof. It forms a flow path through which harmful substances in the exhaust gas can be removed first.

The inner wall 1111 is a portion that forms a flow path of the exhaust gas inside the preprocessor housing 111. Referring to FIG. 2, in one embodiment of the present invention, the inner wall 1111 has a cylindrical flow path of the exhaust gas inside the preprocessor housing 111.

The exhaust gas inlet 1112 is a portion into which the exhaust gas flows into the preprocessor housing 111. As can be seen through FIGS. 2 to 5, 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 is The inner wall 1111 moves downward along the cylindrical flow path formed.

The pretreatment gas outlet 1113 is a portion from which the pretreatment gas, which is an exhaust gas from which harmful substances are first removed, is discharged from the preprocessor 11. 2 to 5, the pretreatment gas outlet 1113 is formed at one lower side of the preprocessor housing 111 and is pretreated gas discharged through the pretreatment gas outlet 1113. Is moved to the post-processor 13 through the connection portion 12.

The cleaning liquid inlet 1114 is a portion into which the cleaning liquid for injection in the preprocessor 11 flows. As can be seen through FIG. 5, the cleaning liquid inlet 1114 is connected or formed to the first pretreatment injection means 112 and the second pretreatment injection means 114, which will be described later.

The first pretreatment injection means 112 is disposed near the exhaust gas inlet 1112 within the preprocessor housing 111 to inject a cleaning solution to the exhaust gas introduced through the exhaust gas inlet 1112. That's the part. As the cleaning solution, as described above, seawater, fresh water mixed with an alkali additive, and the like may be used.

The first pretreatment injection means 112 cools the exhaust gas introduced through the exhaust gas inlet 1112. The exhaust gas introduced through the gas inlet 1112 generally has a temperature of 250 ° C. to 350 ° C., and the temperature is lowered to 50 ° C. to 60 ° C. by the cleaning liquid sprayed by the first pretreatment injection means 112. The volume is reduced.

In addition, the first pretreatment injection means 112 allows PM to be collected primarily by the cleaning liquid, especially among the harmful substances in the exhaust gas. The exhaust gas which is in contact with the cleaning liquid injected by the first pretreatment injection means 112 is in contact with the cleaning liquid injected by the second pretreatment injection means 114 which will be described later. As a result, the cleaning solution in which the first pretreatment injection means 112 collects harmful substances is increased in size and moved to the lower portion of the preprocessor housing 111 by gravity.

It is preferable that the first pretreatment injection means 112 spray the cleaning liquid in a small droplet form as compared to the second pretreatment injection means 114. Specifically, the first pretreatment injection means 112 may be characterized in that to spray the cleaning liquid in the form of droplets having a particle size of 100 ~ 200㎛. Among the harmful substances of the exhaust gas, PM has a particle size of about 0.1 to 0.5 μm, and when the cleaning liquid is sprayed in the form of droplets having a particle size of 100 to 200 μm, it is effective to efficiently aggregate and aggregate the PM into the cleaning liquid. .

6 and 7, in one embodiment of the present invention, the first pretreatment injection means 112 includes a rod-shaped injection body 1121 and an injection hole 1122 formed at one end of the injection body 1121. It includes, and the injection body 1121 may be supplied with a cleaning liquid through the cleaning liquid inlet 1114 from the cleaning liquid supply means (not shown). The injection body 1121 receives a cleaning liquid and delivers the cleaning liquid to the injection hole 1122, and the injection hole 1122 injects the cleaning liquid toward the exhaust gas.

On the other hand, 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.

The specific shape and arrangement of the first pretreatment injection means 112 may vary depending on the injection capacity of the first pretreatment injection means 112 and the overall length design of the preprocessor 11.

The second pretreatment injection means 114 is a portion disposed under the pretreatment gas outlet 1113 within the preprocessor housing 111 to inject a cleaning liquid into the exhaust gas.

The second pretreatment injection means 114 additionally injects a cleaning liquid into the exhaust gas which is directed toward the pretreatment gas outlet 1113 located at the lower portion of the preprocessor housing 111 to the first pretreatment injection means 112. By inducing the aggregation of the cleaning liquid in the state of collecting the harmful substances such as PM contained in the exhaust gas by making the size larger, flows down or down the inner wall 1111 of the preprocessor housing 111 Efficiently falls to the bottom of the preprocessor housing 111.

The second pretreatment injection means 114 is injected by the first pretreatment injection means 112 as described above to increase the size of the cleaning liquid in the state of collecting harmful substances such as PM in the exhaust gas. It is preferable to spray the cleaning liquid having a larger particle diameter than the cleaning liquid sprayed by the injection means 112. Specifically, the second pretreatment injection means 114 preferably sprays the cleaning liquid in the form of droplets having a particle diameter of 500 μm to 1,000 μm.

6 and 7, in one embodiment of the present invention, the second pretreatment injection means 114 is a rod-shaped injection body 1141 and a plurality of branched side by side at a predetermined interval from the injection body 1141 Two injection holes 1142 are included. The injection body 1141 may receive a cleaning liquid from the cleaning liquid supply means (not shown) through the cleaning liquid inlet 1114. The injection body 1141 receives the cleaning liquid and delivers the cleaning liquid to each injection port 1143 to inject the cleaning liquid toward the exhaust gas.

As described above with respect to the first pretreatment injection means 112, the specific shape and arrangement of the second pretreatment injection means 114 may also include the injection capacity of the second pretreatment injection means 114 and the preprocessor 11. ) May vary depending on the overall length of the design.

At this time, the cleaning liquid injected from the first and second pretreatment injection means (112, 114) is intended to lower the temperature before the exhaust gas enters the aftertreatment (13), this operation is only a pretreatment process, so It is preferable to spray an appropriate amount rather than to spray a large amount.

The connection part 12 is a part for moving the pretreatment gas, which is the exhaust gas of which the harmful substances are primarily reduced, from the preprocessor 11 to the aftertreatment 13. 2 to 4, one end of the connection part 12 communicates with the pretreatment gas outlet 1113 of the preprocessor housing 111, and the other end of the connection part 12 has a pretreatment gas inlet part of the postprocessor housing 131. 1312). In this case, the connection part 12 may include a mixing means 121.

8 to 12, the mixing means 121 is located in the connecting portion 12, and has a function of mixing the exhaust gas moving from the pre-processor 11 to the after-treatment 13 with the cleaning liquid. The mixing unit 1212 and the injection unit 1211 may be included.

The mixing unit 1212 is configured to mix the exhaust gas and the cleaning liquid, and may include a plurality of wings 1212a.

The wing 1212a includes a guide surface 1214a for guiding the introduced exhaust gas, a mixed surface 1214b positioned on an opposite surface of the guide surface 1214a, and a guide surface 1214a and a mixed surface 1214b. And a front face 1214c and a rear face 1214d that connect and surround the shape of the wing.

The guide surface 1214a includes a curved surface configured to change the flow of the exhaust gas flowing in and guide the mixed surface 1214b of the neighboring blades.

The mixed surface 1214b includes a curved surface positioned on the opposite side of the guide surface 1214a and configured to change the flow direction of the exhaust gas flowing from the guide surface 1214a of the neighboring wing, and the guide surface 1214a of the Since the curvature in the opposite direction, the center of curvature C2 of the mixed surface 1214b is located in the opposite direction of the center of curvature C1 of the guide surface 1214a with respect to the blade 1212a. Accordingly, the wing 1212a including the mixed surface 1214b and the guide surface 1214a has a shape in which the center is concave, and the center of curvature C1 of the guide surface 1214a is the curvature of the mixed surface 1214b. As it is disposed forward toward the inflow direction A of the exhaust gas rather than the center C2, a series of continuous flows that take over the flow of the exhaust gas bounced from the wing 1212a on one side and lead to the other wing 1212a. Can be formed.

In addition, the mixed surface 1214b may include a first surface 1216a having a curved surface guided from the front surface 1214c of the neighboring blade 1212a to guide the introduced exhaust gas toward the neighboring blade 1212a; And a second surface 1216b extending from the end of the first surface 1216a and a third surface 1216c extending from the second surface 1216b.

The first surface 1216a has a curved surface formed in a direction opposite to the curved surface of the guide surface 1214a of the neighboring wing 1212a, so that the exhaust gas flows along the curved surface of the guide surface 1214a of the neighboring wing 1212a. Flows again toward the guide surface 1214a of the adjacent wing 1212a.

The second surface 1216b is formed to extend in a direction opposite to the inflow direction A of the exhaust gas at one end of the first surface 1216a. Preferably, the second surface 1216b extends to have a predetermined angle θ with respect to the inflow direction A of the exhaust gas. Here, as shown in FIG. 11, the predetermined angle θ is preferably larger than 0 degrees and smaller than 90 degrees in the clockwise direction with respect to the inflow direction A of the exhaust gas.

The third surface 1216c extends at an angle φ in one direction of the second surface 1216b in the inflow direction A of the exhaust gas. Here, as shown in Fig. 11, the predetermined angle φ is greater than zero degrees in the clockwise direction with respect to the inflow direction A of the exhaust gas, and the second surface 1216b is the inflow direction A of the exhaust gas. Is smaller than the angle [theta]. Preferably, it is 0 degree with respect to the inflow direction A of waste gas.

The front surface 1214c is developed in a direction perpendicular to the inflow direction A of the exhaust gas in order to reduce the flow area of the exhaust gas. Preferably, the predetermined angle α inclined clockwise in the direction of the guide surface 1214a of the neighboring left wing 1212a to guide the exhaust gas to the guide surface 1214a of the neighboring wing 1212a. Can be formed. Here, the predetermined angle α is larger than 0 degrees and smaller than 45 degrees.

The rear surface is developed in a direction perpendicular to the inflow direction of the exhaust gas in order to reduce the flow area of the exhaust gas. Preferably, in order to smoothly discharge the exhaust gas passing through the mixing surface of the neighboring blades, a predetermined angle β inclined along the counterclockwise direction in the direction of the mixing surface of the neighboring blades may be formed. Here, the predetermined angle β is larger than 0 degrees and smaller than 45 degrees.

9 and 10, a plurality of the wings 1212a curved in a curve are arranged perpendicular to the traveling direction of the exhaust gas. The vanes 1212a are spaced apart at regular intervals, and the exhaust gas moves therebetween. At this time, since the wing is bent S-shape, the exhaust gas also collides with it and is bent left and right.

This can be confirmed in more detail in the enlarged view of FIG. 10, wherein the exhaust gas collided with the guide surface 1214a of one wing 1212a is bounced off to the mixed surface 1214b of the other wing. The reflected exhaust gas is bent and flows along the first surface 1216a of the mixed surface 1214b of the other wing 1212a, and then flows to the second surface 1216b formed at the end of the other wing 1212a. Colliding, the flow direction changes again. In addition, the exhaust gas flowing along the second surface 1216b again collides with the third surface 1216c extending from the end of the second surface 1216b such that the flow direction of the exhaust gas is opposite to the initial inflow direction. Direction, and mix better with freshly introduced exhaust gas and scrubbing liquid. Furthermore, the flow rate or flow rate of the exhaust gas passing through the wing 1212a portion may be adjusted by adjusting the angle formed by the first to third surfaces, and the seawater and the exhaust gas flowing out without sufficient washing reaction. It can form a structure in which is rapidly mixed.

In this way, during the fluctuation of the exhaust gas from side to side, the harmful substances (sulfur oxide or PM, etc.) in the exhaust gas collide with the cleaning liquid particles to cause a reaction, thereby causing a cleaning operation. Therefore, the cleaning efficiency is further increased, and the efficiency of the entire exhaust gas treatment system is also improved.

In this case, as the plurality of wings 1212a are arranged in a small size, a plurality of wings 1212a are also formed in a small size. As the flow area of the exhaust gas is narrowed, the number of collisions between the exhaust gas and the cleaning liquid is increased to improve the cleaning efficiency.

The injection part 1211 is configured to inject a cleaning solution toward the wing 1212a from the rear side of the blade 1212a, and may include a injection hole 1211a and a jet table 1211b.

The injection hole 1211a is configured to directly spray the cleaning liquid toward the blade 1212a. In this case, the injection hole 1211a is preferably formed by the number of spaces between the blades 1212a. In addition, the shape and position of the injection hole 1211a is preferably adjusted such that the cleaning liquid from the injection hole 1211a is injected to all areas between the wings 1212a. By adjusting in this way, it is possible to prevent the exhaust gas not mixed with the cleaning liquid from escaping between the blades 1212a.

The injection table 1211b is configured to supply a cleaning liquid to the injection port 1211a and is developed perpendicular to the traveling direction of the exhaust gas. That is, the connecting portion 12 is coupled across the horizontal direction.

As the injection unit 1211 injects the cleaning liquid toward the wing 1212a, the fluctuations between the exhaust gas and the cleaning liquid colliding more actively between the blades 1212a are combined with the harmful substances in the exhaust gas, thereby improving the cleaning efficiency. do. Simply injecting the cleaning liquid into the exhaust gas does not sufficiently cause a collision and thus does not perform the cleaning operation properly. Therefore, in the present invention, the S-shaped flow is formed in consideration of this, and furthermore, the cleaning liquid is injected at the beginning thereof to maximize the cleaning efficiency by inducing a collision between the cleaning material and the harmful substances in the exhaust gas.

In addition, the injection hole 1211a of the injection part 1211 injects the cleaning liquid in the flow direction of the exhaust gas, and thus does not give a direction to the flow of the exhaust gas, thus preventing a pressure loss. As described above, the degree of pressure loss in the exhaust gas treating apparatus is quantified and is an important factor to be used as an index indicating the performance of the exhaust gas treating apparatus. In consideration of this, the present invention intends to prevent the pressure loss by injecting the cleaning liquid in the flow direction of the exhaust gas, and to further enhance the pressure by applying additional pressure in the flow direction.

The aftertreatment 13 additionally removes harmful substances in the pretreatment gas, which is an exhaust gas in which the harmful substances are primarily reduced by the pretreatment 11. 1 to 4 and 13, the post processor 13 includes a post processor housing 131, a diffusion means 132, a packing 133, a packing support means 134, and a first post treatment injection means ( 135), the second after-treatment injection means 136, the water separation means 137, washing means 138, the water blocking means 139.

The aftertreatment housing 131 forms an external shape of the aftertreatment 13 and forms a flow path of the pretreatment gas therein. The aftertreatment housing 131 includes an inner wall 1311, a pretreatment gas inlet 1312, a posttreatment gas outlet 1313, and a cleaning solution outlet 1315. As shown in Figures 2 and 13, in one 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 in the upward direction and in the pre-treatment gas Form a flow path through which additional hazardous substances can be removed.

The inner wall 1311 is a portion that forms a flow path of the pretreatment gas inside the post-processor housing 131. 2 and 13, the inner wall 1311 has a cylindrical flow path of the exhaust gas inside the post-processor housing 131.

The pretreatment gas inlet 1312 is a portion into which the pretreatment gas flows into the postprocessor housing 131. As shown in FIGS. 2 to 4 and 13, the pretreatment gas inlet 1312 is formed at one lower side of the aftertreatment housing 131, and the pretreatment gas introduced through the pretreatment gas inlet 1312. Is moved upward along the cylindrical flow path formed by the inner wall 1311.

The aftertreatment gas outlet 1313 is a portion from which the aftertreatment gas, which is a pretreatment gas from which harmful substances are additionally removed, is discharged from the aftertreatment unit 13. As shown in FIGS. 2 to 4 and 13, the aftertreatment gas outlet 1313 is formed on an upper portion of the aftertreatment housing 131 and is discharged through the aftertreatment gas outlet 1313. The treatment gas may be discharged to the atmosphere by removing the harmful substances from the exhaust gas by the pretreatment 11 and the aftertreatment 13.

The cleaning solution inlet 1314 is a portion into which the cleaning solution for injection in the post-processor 13 flows. As can be seen through FIGS. 2 and 13, the cleaning liquid inlet 1314 is connected to the first aftertreatment injection means 135, the second aftertreatment injection means 136, and the cleaning means 138, which will be described later. Or formed.

The cleaning solution outlet 1315 is the first aftertreatment injection means 135 or the first to remove harmful substances in the pretreatment gas introduced into the aftertreatment housing 131 through the pretreatment gas inlet 1312. The cleaning liquid injected by the second post-process injection means 136 is discharged. As can be seen through FIGS. 2 to 4 and FIG. 13, the cleaning solution outlet 1315 is formed at the lower end of the post-processor housing 131, and after the first through the cleaning solution outlet 1315. The cleaning liquid sprayed by the treatment injection means 135 and the second aftertreatment injection means 136 collects harmful substances in the pretreatment gas and moves to the lower end of the aftertreatment housing 131 to be discharged to the outside. do. In order to smoothly discharge the cleaning solution, the lower end of the post-processor housing 131 may be formed in a shape that converges toward the cleaning solution outlet 1315.

The diffusion means 132 is a portion which is disposed adjacent to the pretreatment gas inlet 1312 in the post processor housing 131 to diffuse the pretreatment gas introduced through the pretreatment gas inlet 1312. 14 to 16, the diffusion means 132 is disposed to be spaced apart in front of the pretreatment gas inlet 1312, and includes a first body 1321, a second body 1322, and a third body. A body 1323 is included. In this case, the first, second, and

third bodies

1321, 1322, and 1323 may have the same shape, but only their positions may be different. Therefore, the shape of the first body 1321 will be described below.

The first body 1321 is disposed to cover the upper front of the pretreatment gas inlet 1312, but is coupled to the diffusion part 1321a and the fixing part 1311b to allow the pretreatment gas to pass therethrough ( 1321b). The first body 1321 may be formed of a plate member. As shown in FIGS. 15 and 16, the first body 1321 is generally formed to vertically cover the front of the pretreatment gas inlet 1312, and the upper and lower ends of the first body 1321. The pretreatment gas inlet 1312 may be formed to be inclined or curved.

In more detail, the upper end of the first body 1321 is inclined upward toward the pretreatment gas inlet 1312, and the lower end of the first body 1321 is toward the pretreatment gas inlet 1312. It is formed inclined downward. Through the shape of the first body 1321, the pretreatment gas introduced through the pretreatment gas inlet 1312 may be uniformly diffused forward and upper and lower portions. The first body 1321 may not be inclined or curved in the form of only the top and the bottom of the first body 1321 but may be formed in a curved form as a whole.

The diffusion part 1321a may include a plurality of holes, and the diffusion part 1321a may be formed of a plurality of holes formed uniformly. 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 area or shape of the first body 1321, the size, shape, number, etc. of the diffusion part 1321a may vary depending on the processing capacity of the post processor 13.

The fastening part 1321b is a part allowing the diffusion means 132 to be fixed to the inside of the aftertreatment housing 131 by being fastened to the fixing part 1311b formed in the aftertreatment housing 131. . 14 and 15, the fastening part 1321b is formed in the form of a vertical extension or bent from the left and right ends of the first body 1321 toward the pretreatment gas inlet part 1312, the fastening of bolts and the like. The diffusion means 132 can be fixed to the interior of the post-processor housing 131 by being fastened to the fixing part 1311b formed in the interior of the post-processor housing 131 by means. In this case, as shown in FIGS. 9, 10, and 14, the first body 1321 extends to the left and right ends of the post-treatment paper housing 131 to prevent the exhaust gas from leaking as it is coupled to the left and right. desirable. To this end, the first, second, and

third bodies

1321, 1322, and 1323 may have different lengths.

The pretreatment gas, which is an exhaust gas of which harmful substances are primarily reduced by the preprocessor 11, is discharged to the pretreatment gas outlet 1312 and flows into the pretreatment gas inlet 1312 through the connection part 12. do. At this time, the flow is concentrated toward the pretreatment gas inlet 1312 of the inner wall 1311 of the postprocessor housing 131 while entering the inside of the postprocessor housing 131, and inside the postprocessor housing 131. It is not evenly distributed in the flow path of the pretreatment gas formed in the filter.

The diffusion means 132 narrows the cross-sectional area when the pretreatment gas flows into the aftertreatment housing 131 and serves as a nozzle so that the pretreatment gas flows into the aftertreatment housing 131. Allows to spread evenly. This allows the pretreatment gas to be evenly distributed on the flow path of the pretreatment gas formed inside the post-processor housing 131. That is, by evenly dispersing the pretreatment gas introduced into the packing 133 through the diffusion means 132, it is possible to increase the absorption efficiency of SOx of the pretreatment gas in the packing 133 and to collect other harmful substances. Efficiency can also be improved.

On the other hand, as shown in Figure 14 and 15, the diffusion means 132 may be arranged in the form of a staircase three in front of the pretreatment gas inlet 1312. That is, the first, second, and

third bodies

1321, 1322, and 1323 described above are arranged at different heights. At this time, the body is farther from the gas inlet 1312 side can achieve a downward slope that the height is lower.

This allows the exhaust gas to spread further to the opposite wall of the pretreatment gas inlet 1312. The flow of the exhaust gas can be confirmed in more detail in FIG. 4, wherein the exhaust gas introduced through the gas inlet 1312 passes through the first, second, and

third bodies

1321, 1322, and 1323. 131 is widely dispersed therein, which further improves the treatment efficiency of the exhaust gas. In particular, the exhaust gas is preferably diffused to the wall opposite the gas inlet 1312.

The packing 133 is a portion for increasing the contact area between the cleaning liquid sprayed by the first aftertreatment injection means 135 and the second aftertreatment injection means 136 and the pretreatment gas, which will be described later. The packing 133 is disposed on the flow path of the pretreatment gas and the upper portion of the diffusion means 132 in the post-processor housing 131 to increase the gas / liquid contact area between the pretreatment gas and the cleaning liquid. Alternatively, it is possible to smoothly dissolve SOx, which is a harmful substance in the pretreatment gas, through a cleaning solution composed of fresh water or the like containing an alkali additive.

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

The packing supporting means 134 supports the packing 133 from the bottom, but diffuses the pretreatment gas. 17 and 18, the packing support means 134 covers the flow path of the pretreatment gas, and the edge thereof is formed on a step 1311a protruding inwardly into the inner wall 1311 of the post-processor housing 131. The part rests and supports the packing 133 placed on the top. In the present invention, the packing support means 134 is characterized in that it has a diffusion function to diffuse the pretreatment gas in the lower portion of the packing 133.

The packing support means 134 includes a through part 134a formed to allow the pretreatment gas to pass therethrough and a support part 134b for supporting the packing. In detail, the support part 134a is a strand having a cross structure, and the through part 134a is formed by a through hole formed by the support part 134b. That is, the packing supporting means 134 forms the through portion 134a of the mesh structure by the supporting portion 134b having the cross structure. By reducing the resistance through such a mesh structure it is possible to reduce the pressure loss of the pretreatment gas.

The packing support means 134 increases the passage area of the pretreatment gas to minimize the pressure loss of the pretreatment gas by increasing the ratio of the diffusion part 134a, that is, the ratio of the perforation of the mesh structure, compared to the general mesh structure. Preferably, in detail, the area of the diffusion part 134a and the vertical projection area of the support part 134b are preferably about 2 to 4 to 1.

On the other hand, as shown in Figure 17, it is preferable that the support portion 134b has a structure in which at least a portion is twisted. When the support part 134b has the twisted structure as described above, the pretreatment gas that strikes the support part 134b of the pretreatment gas passing through the through part 134a changes its traveling direction along the twisted direction. As a result, the pretreatment gas can be diffused more widely, and more uniform and active dispersion and diffusion of the pretreatment gas is achieved.

In the present invention, the packing support means 134 does not merely support the packing 133, and evenly distributes the pretreatment gas introduced into the packing 133 in the entire lower area of the packing 133. . As a result, it is possible to increase the absorption efficiency of the SOx of the pretreatment gas in the packing 133 through the packing support means 134, and to improve the collection efficiency of other harmful substances.

On the other hand, the packing support means 134 preferably has a bent structure in which the peak portion (1341) and the valley portion (1342) are continuously connected side by side. Side by side successive bending structure improves the bearing capacity compared to the cross-sectional area allows the packing 133 can be more stably supported by the mountain (1341). Furthermore, such a structure allows the pressure of the pretreatment gas traveling toward the packing 133 to be uniformly distributed in the packing support means 134, and thus from the bottom of the packing 133 toward the packing 133. The flowing pretreatment gas is made to diffuse evenly to the bottom of the packing (133).

The first aftertreatment injection means 135 is a portion of the inside of the aftertreatment housing 131 disposed on the flow path of the pretreatment gas and spraying the cleaning liquid toward the pretreatment gas. The first aftertreatment injection means 135 is disposed on the packing 133 and sprays a cleaning solution toward the packing 133.

13, 19 and 20, in one embodiment of the present invention, the first post-process injection means 135 is a rod-shaped injection body (1351) and the injection body (1351) at regular intervals And a plurality of spraying rods 1352, which are branched side by side, and a plurality of spraying holes 1153 formed at predetermined intervals on each of the spraying rods 1352, and each of the spraying rods 1352 through the spraying body 1351. Cleaning liquid supply means for supplying a cleaning liquid to the (not shown) may be further included. The cleaning liquid supplied by the cleaning liquid supply means (not shown) is supplied to the injection body 1351 through the cleaning liquid inlet 1314. The injection body 1351 receives a cleaning liquid and delivers the cleaning liquid to each of the injection rods 1352, and the injection hole 1353 injects the cleaning liquid toward the exhaust gas.

The specific shape and arrangement of the first aftertreatment injection means 135 may vary depending on the injection capacity of the first aftertreatment injection means 135 and the overall length of the aftertreatment 13.

The second aftertreatment injection means 136 is disposed on a flow path of the pretreatment gas in the interior of the aftertreatment housing 131 to inject a cleaning solution toward the pretreatment gas, but the first aftertreatment injection means 135 It is characterized in that it works independently. This independent operation can be made by the control of the controller C as shown in FIG. The controller C performs control so that the cleaning solution injection of the first after-treatment injection means 135 and the second after-treatment injection means 136 may be independently performed.

13, 19 and 20, in one embodiment of the present invention, the second after-treatment injection means 136 is a rod-shaped injection body 1361 and the injection body 1361 at regular intervals And a plurality of spraying rods 1362 branched side by side, and a plurality of spraying holes 1363 formed at predetermined intervals on each of the spraying rods 1362, and each of the spraying rods 1362 through the spraying body 1361. Cleaning liquid supply means for supplying a cleaning liquid to the (not shown) may be further included. The cleaning liquid supplied by the cleaning liquid supply means (not shown) is supplied to the injection body 1361 through the cleaning liquid inlet 1314. The injection body 1361 receives a cleaning liquid and delivers the cleaning liquid to each of the injection rods 1362, and the injection hole 1363 injects the cleaning liquid toward the exhaust gas.

The specific shape, arrangement, and the like of the second aftertreatment injection means 136 are described in relation to the first aftertreatment injection means 135, and the injection capacity of the second aftertreatment injection means 136 and the post It may vary depending on the overall length design of the processor 13 and the like.

The second aftertreatment injection means 136 operates independently of the first aftertreatment injection means 135 so that the second aftertreatment injection means 136 is optional with the first aftertreatment injection means 135. This means that the cleaning liquid can be sprayed on or simultaneously. Therefore, when the amount of the exhaust gas generated by combustion and the amount of pretreatment gas flowing from the pretreatment 11 changes according to the load of the engine, it is possible to appropriately spray the cleaning liquid accordingly. Economical operation of the processor 13 is achieved.

The second aftertreatment injection means 136 is disposed above the first aftertreatment injection means 135 at regular intervals. When the second aftertreatment injection means 136 and the first aftertreatment injection means 135 are disposed on the same horizontal plane among the flow paths of the pretreatment gas, the resistance that hinders the flow of the pretreatment gas is increased. The second aftertreatment injection means 136 and the first aftertreatment injection means 135 are preferably arranged at different heights.

In addition, the first after-treatment injection means 135 and the second after-treatment injection means 136 are arranged at different heights, but are arranged to cross each other during vertical projection on the flow path of the pretreatment gas. More preferred. Through this arrangement, the cleaning liquid can be evenly sprayed on the pretreatment gas on the pretreatment gas flow path without a square area, and the removal of harmful substances in the pretreatment gas can be performed more efficiently.

Here, the mechanism of removing the harmful substances in the pretreatment gas through the cleaning liquid sprayed by the first aftertreatment injection means 135 and the second aftertreatment injection means 136 is as follows.

The pretreatment gas includes acidic substances such as sulfur oxides (SOx) and harmful substances such as PM, and the first aftertreatment injection means 135 and the second aftertreatment injection means 136 neutralize the harmful substances. The cleaning liquid is sprayed to remove and coagulate. Generally, 0.1 ~ 0.5um of PM is first agglomerated by water droplets (100 ~ 200um) to increase in size. In addition, in order to neutralize the acidic sulfur oxides (SOx), a basic washing solution is required. 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). Neutralization reaction of sulfur oxide (SOx) by NaOH addition cleaning solution is as follows.

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

However, as described above, when the present invention is applied to a vessel, sea water, which is brine, may be used as a cleaning liquid. In general, water is sodium chloride (NaCl), magnesium chloride (MgCl _2), potassium chloride (KCl) containing a salt melt in which they occur Cl, such as ^{^-,} SO ₄ ^2-, Br ^- the pH due to the negative ions, such as 7.8 ~ 8.3 degree Phosphorus weak basic. 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 alkaline additive.

At this time, the neutralization reaction by sea water is as follows, first, it is mixed with sulfur dioxide (SO ₂ ) water in the gas state.

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

It then reacts with the base in seawater, which is

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

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

That is, sulfur dioxide is absorbed into seawater and becomes the sulfate through the reaction.

The water separation unit 137 is disposed above the second aftertreatment injection unit 136 in the interior of the aftertreatment housing 131 and flows through the second aftertreatment injection unit 136 through the pretreatment gas. This part serves to separate the cleaning liquid flowing through the path. The radiator separation means 137 is disposed in such a manner that the edge portion is seated on the stepped portion 1311a protruding inward to the inner wall 1311 of the post-processor housing 131.

The water separation means 137 serves to separate, filter, and recover an aerosol-type droplet or mist generated by the pretreatment gas and the cleaning liquid, and a vertical cross section is formed in a zigzag shape. ) May be arranged in a plurality arranged at regular intervals. In addition, the base separation means 137 may be changed in a specific form according to the design, temperature and chemical characteristics of the post-processor 13, and the like.

The washing means 138 is disposed above the second aftertreatment injection means 136 and below the water separation means 137 of the aftertreatment housing 131 to separate the water separation means 137. It is the part which sprays a cleaning liquid toward.

13, 21 and 22, in one embodiment of the present invention, the cleaning means 138 is a rod-shaped injection body (1381), a plurality of branches branched side by side at regular intervals in the injection body (1381) And a plurality of injection holes 1383 formed at predetermined intervals on the injection rods 1382 and the injection rods 1382, and supplying a cleaning liquid to the injection rods 1382 through the injection bodies 1381. The cleaning solution supply means may be further included. The cleaning solution supplied by the cleaning solution supply means (not shown) is supplied to the injection body 1341 through the cleaning solution inlet 1314. The injection body 1381 receives a washing liquid and delivers the washing liquid to each of the spraying units 1382, and the spray hole 1383 injects the washing liquid toward the radiating means 137.

The water separation means 136 may be contaminated or blocked in the process of separating, filtering, and recovering a cleaning liquid or mist in a state of collecting harmful substances such as PM in a pretreatment gas, and the washing means 138 may separate the water. By allowing the means 137 to be washed by the cleaning liquid to prevent contamination and blockage of the water separation means 136.

In addition, the cleaning means 138 by spraying the cleaning liquid to increase the size of the cleaning liquid or mist separated by the water separation means 137, the cleaning liquid or mist collecting the harmful substances becomes a large drop of water after the post-processor housing ( Efficiently fall to the bottom of the 131 or the inner wall 1311 of the post-processor housing 131 can be flowed down.

The drop blocking means 139 is a portion that rises through the inner wall 1311 of the after-treatment housing 131 and serves to block water droplets flowing out to the after-treatment gas outlet 1313. 13, 23 and 24, the water droplet blocking means 139 includes a blocking wall (1391). In addition, the water droplet blocking means 139 forms a collecting space (1392) for collecting the water droplets in the vicinity of the after-treatment gas outlet 1313 to prevent the water droplets outflow. The collection space 1372 is formed in a shape in which the collected drops can fall to the bottom.

The aftertreatment gas outlet 1313 is formed above the postprocessor housing 131 in an upward direction, and the water droplet blocking means 139 is downward from an edge of the aftertreatment gas outlet 1313. An extended barrier wall 1391 is included. The blocking wall (1391) forms a collecting space (1392) between the upper inner wall of the housing 131 of the post-processor. The upper inner wall 1311 of the housing 131 of the post-processor is converging toward the post-treatment gas outlet and is inclined, and the blocking wall 1391 is used to efficiently form the liquid and the collection space 1392. In order to effectively block the external discharge of the enemy is preferably characterized in that it extends in the vertical direction.

The pretreatment gas rises along the flow path of the pretreatment gas formed in the aftertreatment 13 and becomes a posttreatment gas while additionally removing harmful substances, and is discharged to the outside through the aftertreatment gas outlet 1313. In this process, some of the water droplets consisting of the cleaning liquid which collects the harmful substances in the pretreatment gas are lifted on the inner wall 1311 of the aftertreatment housing 131 and moved toward the aftertreatment outlet 1313.

The water droplets moving to the vicinity of the edge of the aftertreatment gas outlet 1313 through the upper inner wall 1311 of the aftertreatment housing 131 are caught by the blocking wall 1391. In addition, a collection space (1392) is formed between the blocking wall (1391) and the inner wall (1311) of the after-treatment housing (131) around the after-treatment gas outlet (1313) to agglomerate the water droplets. Droplets aggregate in the collecting space (1392) to increase the size and weight of the droplets can be dropped to the lower portion of the post-processor housing (131).

As such, the water droplet blocking means 139 blocks water droplets that collect harmful substances in the pretreatment gas from being discharged to the outside through the post processor outlet 1313, and is separated into a lower portion of the post processor housing 131. Let it fall

In the above, the Applicant has described various embodiments of the present invention, but these embodiments are merely one embodiment for implementing the technical idea of the present invention, and any changes or modifications may be made to the present invention as long as the technical idea of the present invention is implemented. It should be interpreted as falling within the scope of.

Claims

In an exhaust gas treating apparatus for treating exhaust gas generated by combustion,

The exhaust gas treating apparatus includes a mixing means for mixing the exhaust gas and the cleaning liquid to enable efficient cleaning of the exhaust gas.

Exhaust gas treatment system.
The method of claim 1,

The mixing means may include an injection unit for injecting the cleaning liquid, and a mixing unit for mixing the cleaning liquid and the exhaust gas.

Exhaust gas treatment system.
The method of claim 2,

The mixing unit includes a plurality of blades for guiding the bypass flow of the exhaust gas, the exhaust gas is bent and flows to meet the blade, characterized in that it is efficiently mixed with the cleaning liquid
The method of claim 3,

The injection unit is characterized in that for spraying the cleaning liquid in the exhaust gas flow direction to minimize the pressure loss

Exhaust gas treatment system.
The method of claim 4, wherein

The spraying unit is characterized in that for spraying the cleaning liquid in the direction between the wings

Exhaust gas treatment system.
The method of claim 3,

The wing is bent, but at one end to form a guide surface to bypass the exhaust gas to form a bypass flow of the exhaust gas

Exhaust gas treatment system.
The method of claim 6,

The wing includes a mixing surface located opposite the guide surface

Exhaust gas treatment system
The method of claim 7, wherein

The center of curvature of the mixed surface is located in the opposite direction of the center of curvature of the guide surface

Exhaust gas treatment system.
The method of claim 8,

The mixing surface includes a first surface for directing the flow of the exhaust gas flowing in the opposite direction

Exhaust gas treatment system.
The method of claim 9,

The mixing surface includes a second surface extending at a predetermined angle in the inflow direction of the exhaust gas at the end of the first surface

Exhaust gas treatment system.
The method of claim 10,

The mixing surface includes a third surface extending at a predetermined angle in the inflow direction of the exhaust gas at the end of the second surface

Exhaust gas treatment system.
The method of claim 11,

The blades are characterized in that the plurality is arranged perpendicular to the exhaust gas flow direction

Exhaust gas treatment system.
The method of claim 12,

The wings are all arranged in the same direction to guide the flow of the exhaust gas exiting the wing in a certain direction

Exhaust gas treatment system.
The method of claim 13,

The injection unit includes a spraying rod for supplying a cleaning liquid and a spraying hole coupled to one side of the spraying rod to spray the cleaning liquid,

The jet is deployed perpendicular to the exhaust gas flow direction,

The injection port is characterized in that spaced apart a predetermined interval so as to spray the cleaning solution between each wing

Exhaust gas treatment system.
The method according to any one of claims 1 to 14,

The exhaust gas treating apparatus includes a preprocessor in charge of pretreatment of exhaust gas, a post processor for pretreatment of pretreatment gas from the preprocessor, and a connection portion connecting the preprocessor and the post processor.

The mixing means is characterized in that provided in the connection portion

Exhaust gas treatment system.