KR20160107848A - Exhaust gas clean-up device for the exhaust gas of ship engines - Google Patents

Abstract

The apparatus for purifying exhaust gas of a ship according to the present embodiment includes a case having a space portion therein and having an opening portion at an upper portion and a lower portion; A base which is coupled to be able to close an opening formed in a lower portion of the case and in which an exhaust gas is supplied to an internal space portion of the case; A guide plate disposed at a space inside the case and spaced apart from the base by a predetermined distance; A collection tube having one end coupled to the guide plate and the other end coupled to an upper opening formed on an upper surface of the case, A plurality of peripheral spraying tubes disposed on a circumferential surface of the collecting tube and having a plurality of peripheral spraying nozzles formed on the surface facing the collecting tube; A central spray tube disposed at the center of the collection tube and having a plurality of central spray nozzles formed to face the inner surface of the collection tube; And a screw-shaped guide plate having one end connected to the upper portion of the case and the other end connected to the upper side of the guide plate to guide the exhaust gas flowing through the input pipe in a spiral shape.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an exhaust gas purifying apparatus for a ship,

The present invention relates to an exhaust gas purifying apparatus, and more particularly to an exhaust gas purifying apparatus capable of purifying noxious gas discharged from a large diesel engine such as a ship.

Exhaust gases emitted from chemical processes, semiconductor manufacturing processes or transportation means such as automobiles and ships are not only harmful to human body due to their high toxicity, explosiveness and corrosiveness, but also cause environmental pollution if they are released into the atmosphere . Therefore, the exhaust gas must be purified to reduce the content of harmful components to below the permissible concentration. Thus, only the exhaust gas having undergone the purification process for removing the toxic substances is required to be discharged into the atmosphere.

Methods of treating various harmful exhaust gases include a burning method, a wetting method, and an absorption method.

The combustion method is a method of treating an exhaust gas by decomposing an ignitable gas containing a hydrogen group or the like at a high temperature of about 500 to 800 DEG C in a high-temperature combustion chamber, and the wet method is mainly a method of dissolving a water- And the exhaust system is a system in which the harmful gas which does not ignite or does not dissolve in water is passed through the adsorbent to be purified by physical or chemical adsorption.

Such exhaust gas treatment includes, for example, a scrubbing treatment for removing acid gas or particles from the exhaust gas stream, and the liquid is used to remove fine components or particles contained in the gas.

The cleaning process includes a cylindrical body having an outlet at an upper end thereof, a guide vane installed in the body so as to allow contaminants to flow in contact with the inner circumferential surface of the lower one, a slot plate radially installed in the body, A plurality of cleaning liquid supply devices having an impact plate installed upward and a cleaning liquid jetting unit provided on the impingement plate and spaced apart at regular intervals. At this time, a pump for supplying the cleaning liquid to the demister and the cleaning liquid spraying unit may be installed above the cleaning liquid spraying unit.

In such a conventional scrubber, the exhaust gas rises through between the packings, and the water falls down from the top of the packed material being sprayed. At this time, by filling a large amount of the filler in the cleaning dust collector in order to lengthen the time for the exhaust gas to stay in the washing dust collector, the exhaust gas rises up between the fillers, and the time for the cleaning liquid to come into contact with each other while being lowered becomes longer. In this case, the filler is preferably as large as the surface area, and the droplets of the cleaning liquid falling off the filler are formed as a thin film and flow downward, so that the surface area of meeting the exhaust gas is widened and the amount of the exhaust gas absorbed increases.

However, since the space and the weight occupied by the engine and the related apparatus are large in a large-sized ship, if the space and the weight are reduced, the loading capacity of the ship can be improved. Therefore, there is a demand for research on the structure of an exhaust gas purifying apparatus improved in structure to reduce the volume and weight of the engine system.

Korean Patent Publication No. 10-2012-0129309 (published on November 28, 2012) Korean Registered Patent No. 10-1137716 (registered on Apr. 12, 2012)

The present embodiment provides an exhaust gas purifying apparatus for a ship capable of forcibly passing exhaust gas into a tunnel of water by high-pressure water injection while removing harmful components contained in the exhaust gas and reducing engine noise.

The apparatus for purifying exhaust gas of a ship according to the present embodiment includes a case having a space portion therein and having an opening portion at an upper portion and a lower portion; A base which is coupled to be able to close an opening formed in a lower portion of the case and in which an exhaust gas is supplied to an internal space portion of the case; A guide plate disposed at a space inside the case and spaced apart from the base by a predetermined distance; A collecting pipe having one end coupled to the guide plate and the other end coupled to an upper opening formed on an upper surface of the case and having a plurality of through holes formed in a side surface thereof; A plurality of peripheral spraying tubes disposed on a circumferential surface of the collecting tube and having a plurality of peripheral spraying nozzles formed on the surface facing the collecting tube; A central spray tube disposed at the center of the collection tube and having a plurality of central spray nozzles formed to face the inner surface of the collection tube; And a screw-shaped guide plate having one end connected to the upper portion of the case and the other end connected to the upper side of the guide plate to guide the exhaust gas flowing through the input pipe in a spiral shape.

A certain level of water can be stored in the space formed through the coupling of the case and the base.

The guide plate may have an inclined surface on a surface facing the input tube.

The guide plate may include a plurality of first and second water pipes for collecting and discharging water sprayed through the center and peripheral spray pipes.

The first drain pipe may be formed to have a larger diameter than the second drain pipe.

The second water pipe is disposed in an inner space of the collecting pipe, and is capable of collecting water sprayed through the central spray pipe.

The collecting pipe may be formed in a cylindrical shape and may be formed so as to have a plurality of through holes on the side wall so as to have a predetermined diameter and an interval.

The lower surface of the collecting tube may be engaged with the guide plate, and the upper surface may be engaged with the upper surface of the case.

The guide plate may have at least one through hole formed therethrough, and the diameter of the through hole disposed at the lower side may be larger than the diameter of the through hole disposed at the upper side.

According to the present embodiment as described above, it is possible to reduce the space and weight occupied by a large-sized diesel engine and an associated apparatus such as a ship or an offshore plant.

In addition, because of the size of the conventional engine, it is possible to apply to small ships as well as mid- to large-sized vessels that are installed or not installed at a smaller scale than the required capacity, so that the emission of harmful substances among various exhaust gases of various ships can be blocked. .

1 is a schematic sectional view of an exhaust gas purifying apparatus for a ship according to the present embodiment,
FIG. 2 is a side view showing a state in which the case of FIG. 1 is removed,
3 is a plan view showing a base according to the present embodiment,
4 is a plan view showing the guide plate according to the present embodiment,
5 is a plan view showing the arrangement of the center and peripheral spray tubes according to the present embodiment,
6 is a schematic exploded perspective view of an exhaust gas purifying apparatus for a ship according to the present embodiment.

Hereinafter, an exhaust gas purifying apparatus for a ship according to the present embodiment will be described with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

On the other hand, terms including an ordinal number such as a first or a second may be used to describe various elements, but the constituent elements are not limited by the terms, and the terms may refer to a constituent element from another constituent element It is used only for the purpose of discrimination.

Fig. 1 is a schematic sectional view of an exhaust gas purifying apparatus for a ship according to the present embodiment, Fig. 2 is a side view showing a state in which the case of Fig. 1 is removed, Fig. 3 is a plan view showing the base according to this embodiment, FIG. 5 is a plan view showing the arrangement of the center and peripheral spray tubes according to the present embodiment, and FIG. 6 is a plan view of the exhaust gas purification apparatus of the present embodiment, Fig.

1, the apparatus for purifying exhaust gas of a ship according to the present embodiment includes a casing 110, a base 210, a guide plate 300, a collection pipe 400, a central injection pipe 510, And may include a spraying tube 520 and a guide plate 600.

The case 110 is provided in a substantially cylindrical shape and can form an opening in which upper and lower surfaces are open. The case 110 may include a base 210, a guide plate 300, a collection tube 400, and the like in an inner space. The diameter D1 of the upper surface of the case 110 may be smaller than the diameter D2 of the lower surface. The purified exhaust gas is discharged through the upper surface of FIG. 1, The relatively contaminated gas to be discharged may be introduced.

The case 110 may be formed of a metal material that can withstand high temperatures and may have a first connection part 111 having a predetermined area on a lower surface thereof. The first connection part 111 may be sealed through surface contact with the second connection part 210a of the base 210 described later. According to the present embodiment, the first and second connection parts 111 and 210a may be sealed Welding, bolting, or the like. At this time, though not shown, a sealing member such as a gasket or the like may be interposed on the connection surfaces of the first and second connection portions 111 and 210a. In addition, the first and second connection portions 111 and 210a may be formed in a substantially ring shape, and may have a contact surface having a predetermined area or more to enable surface contact.

An upper blocking portion 112 and an upper connection portion 113 may be formed on the upper surface of the case 110. [

The upper blocking portion 112 may serve to block the exhaust gas that has risen through the guide plate 600, which will be described later, because the exhaust gas whose pollutant has not been purified by water is discharged to the outside of the case 110 So as to prevent it from being discharged. An end of a guide plate 600 to be described later may be connected to a lower side of the upper blocking portion 112 and a collection pipe 400 may be disposed in an inner space of the upper blocking portion 112.

An upper surface of the collecting pipe 400 is inserted into the upper connecting portion 113 so that the inner space of the upper connecting portion 113 can be connected to the exhaust gas discharging passage. According to the present embodiment, the upper connecting portion 113 may be formed to protrude upward from the upper blocking portion 112.

The base 210 is coupled to the lower surface of the case 110 and may be formed as a disk-shaped plate member. At this time, an input tube 220 formed in a pipe shape on the upper side may be integrally formed in the vicinity of the center of the base 210. The input pipe 220 is connected to an engine room (not shown) to discharge the exhaust gas discharged from the engine toward the collection pipe 400. As shown in the drawing, the exhaust gas flowing through the input tube 220 can be guided by the guide plate 300, which will be described later, and guided toward the collecting tube 400.

On the other hand, at least one main water supply pipe connection hole 211 may be provided on the bottom surface of the base 210. The central injection pipe 510 extending through the main water supply pipe connection hole 211 may be connected to the first water supply pipe 500a at an end thereof to inject water toward the inner circumferential surface of the collection pipe 400. [ In addition, a plurality of auxiliary water supply pipe connection holes may be provided on the bottom surface of the base 210. The auxiliary water supply pipe connection holes may be connected to the second water supply pipe 500b of the peripheral discharge pipe 520, So that the water can be supplied and injected through the water supply port. The diameters of the first and second water supply pipes 500a and 500b may be the same, and a constant flow rate of water may be supplied through the first and second water supply pipes 500a and 500b. However, the present invention is not limited to this, and the first water supply pipe 500a may be formed of a pipe having a larger diameter so that a stronger pressure water can be supplied through the central injection pipe 510. [

The guide plate 300 may be disposed at a predetermined distance from the base 210 and may be coupled to the lower side of the collection tube 400 at an upper side. In addition, the guide plate 300 may serve to fix and support the positions of the center and peripheral spray tubes 510 and 520. The bottom surface of the guide plate 300 may have an inclined surface 301 as shown in FIG. The inclined surface 301 may guide the input direction of the exhaust gas flowing through the input tube 220. That is, the exhaust gas flowing through the input pipe 220 rides on the inclined surface 301, collides with the inner circumferential surface of the case 110, and is discharged through the collecting pipe 400 again.

The guide plate 300 may include a first drain pipe 310 and a second drain pipe 320. The first drain pipe 310 may have a pipe shape having a predetermined diameter and may protrude downward. The second drain pipe 320 may be formed to have a smaller diameter than the first drain pipe 310 and connected to the outside of the input pipe 220 through the inside of the input pipe 220, The water can be drained through the drain pipe 321. 1, the water drained through the drain hole 321 and the water drained through the first drain pipe 310 are connected to the bottom surface of the case 110 through the coupling of the case 110 and the base 210. At this time, Can be collected in the formed water tank space and stored at a certain water level. At this time, the stored water can be discharged to the outside through the unillustrated drain pipe (see FIG. 6).

The collecting tube 400 may be coupled to the guide plate 300 at one end and coupled to the upper connecting portion 113 at the upper opening formed at the upper surface of the case 110. A through hole 410 may be formed in the side surface of the collecting tube 400, and the through hole 410 may have the same distance between the center and the center.

According to the present embodiment, the collecting tube 400 may be arranged to be coaxial with the case 110. Particularly, to be coaxial with the center of the input tube 220, so that the flow of the exhaust gas can be smoothly performed. The upper side of the collecting pipe 400 is tightly coupled with the case 110 so that the exhaust gas can be discharged only through the upper connecting portion 113. This is for the purpose of constructing to be able to conserve the flow rate of the exhaust gas. In the interior of the upper connection part 113, contaminants such as black carbon which can not be processed in the collection pipe 400 can be finally removed from the exhaust gas, and water contained in the exhaust gas can be condensed and dropped A separation membrane (not shown) may be further included. However, the present invention is not limited thereto, and it is possible to omit it.

The central spray tube 510 may be disposed at the center of the collecting tube 400 and a plurality of central spray nozzles 511 may be formed in a direction toward the inner circumferential surface of the collecting tube 400. As shown in FIG. 5, the central injection nozzle 511 is arranged radially so that fine droplets ejected in a wide area with the exhaust gas flowing through the inside of the collection tube 400 can be arranged . According to this embodiment, it is preferable that the central spray tube 510 is disposed at the center of the collecting tube 400.

The peripheral spray tubes 520 are disposed on the circumferential surface of the collecting tube 400. According to the present embodiment, eight tubes may be arranged to form a regular octagonal shape. At this time, at least three of the nozzles are group 1, and the nozzles of the respective groups are spaced apart by a certain distance so that a plurality of nozzles can be arranged at the same height. At this time, the water sprayed through the peripheral spray pipe 520 can be configured to direct the exhaust gas that has not yet entered the collection pipe 400. Accordingly, the exhaust gas moving upward through the guide plate 600, which will be described later, is combined with the water sprayed through the peripheral injection pipe 520, so that the pollutant can be effectively removed.

As shown in FIGS. 1 and 2, the guide plate 600 may be provided in a screw shape connected from the lower side to the upper side. Accordingly, the exhaust gas moves to the inner space of the collecting tube 400 while the exhaust gas moves on the guide plate 600, and the exhaust gas which has not moved to the inside of the collector tube 400 is discharged from the peripheral spray tube 520 So that the pollutant can flow down along the guide plate 600.

When the guide plate 600 is formed in the shape of a screw, it is possible to guide the movement path of the rising exhaust gas and to allow the water injected through the peripheral injection pipe 520 to flow downward naturally, It is possible.

Although not shown, at least one through hole is formed through the guide plate 600, and the diameter of the through hole disposed at the lower side may be larger than the diameter of the through hole disposed at the upper side. When the through hole is formed as described above, the water flowing down the guide plate 600 can be effectively drained, and the pressure loss caused by the movement of the exhaust gas can be compensated.

6 is a schematic exploded perspective view of an exhaust gas purifying apparatus for a ship according to the present embodiment.

As shown in the figure, the case 110 can be configured to be detachable, and a guide plate 600 having a spiral shape is provided inside the case. At this time, since the space portion on the bottom surface formed through the coupling of the case 110 and the base 210 can be used as a water tank space without separately configuring the water tank as before, the size of the apparatus can be minimized, It is also possible to apply effectively to medium and small ships.

The guide plate 600 is coupled to the guide plate 300 at one end and connected to the upper surface of the case 110 so that the upper surface of the case 110 can be blocked It can be configured to play the role of a plate. Therefore, the exhaust gas that has not been introduced into the not-collecting pipe 400 by the guide plate 600 can be discharged to the outside only through the inner space of the collecting pipe 400 without being discharged to the outside.

Hereinafter, the operation of the present invention will be described with reference to the drawings.

The water in a high pressure state is supplied to the first water supply pipe 500a by the pump not shown and may be supplied to the central injection pipe 510 connected to the first water supply pipe 500a. In addition, the water supplied through the second water supply pipe 500b is supplied to the peripheral injection pipe 520 through the branch pipes 522, respectively. Accordingly, water injection is started by the central spray nozzle 511 and the peripheral spray nozzle 521 formed in the central spray pipe 510 and the peripheral spray pipe 520, respectively. In this state, the exhaust gas flows into the case 110 through the input tube 220.

The exhaust gas entering the case 110 is expanded adiabatically due to a difference in cross sectional area between the case 110 and the input tube 220, thereby primarily eliminating the noise and slowing the flow rate. Then, the exhaust gas immediately rises and does not flow into the collection pipe 400, but is raised in a spiral shape by the guide plate 600, so that the direct upward movement can be hindered. When a through hole is formed in the surface of the guide plate 600, the exhaust gas passing through the through hole is directed to the peripheral spray nozzle 521, and water particles supplied from the peripheral spray nozzle 521 So that the contaminants in the exhaust gas collapse and fall. The water droplets containing the dropped contaminants flow down along the play surface of the guide plate 600 and drop to the water receiving portion formed on the bottom surface through the connection between the case 110 and the base 210 .

A part of the exhaust gas passes through the through hole 410 of the collecting pipe 400 and moves to the inside of the collecting pipe 400. Finally, all of the exhaust gas is moved to the inside of the collection pipe 400 by the guide plate 600.

The exhaust gas flowing into the collection pipe 400 collides with the water particles supplied from the central injection nozzle 511 of the central injection pipe 510 and contaminates the pollutants in the exhaust gas. The water droplets containing the dropped pollutants collect on the upper part of the guide plate 300 under the collecting pipe 400 and the collected water can be moved to the water tub through the first voluntary pipe 310.

Therefore, the exhaust gas collides with the guide plate 600, collides with the water particles supplied from the peripheral injection nozzle 521, collides with the water particles supplied from the central injection tube 510, At the same time, noise is removed by the water particles filled in the case 110 and the collecting pipe 400.

In addition, in the embodiment, the input tube 220 is disposed on the lower side and the exhaust gas moves in the direction perpendicular to the direction of gravity. However, the present invention is not limited thereto and, if necessary, it is also possible to install the illustrated embodiment in a direction inclined by a certain angle instead of the direction perpendicular to the horizontal plane. With this configuration, it is possible to apply to small and medium-sized vessels compared to the existing configuration.

According to the present embodiment as described above, it is possible to reduce the space and the weight occupied by the large diesel engine and the related apparatus such as a ship or a barge. Also, the present invention can be applied to a small-sized ship in which a dust collector is installed on a scale smaller than a required capacity due to the size of a conventional engine, or a small-sized ship in which the size of a ship is narrow and a separate exhaust gas purifier can not be installed. Accordingly, it is possible to prevent the emission of harmful substances among the exhaust gases of various ships, thereby preventing air pollution in the sea.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

110; A case 111; The first connection portion
112; An upper blocking portion 113; The upper connection
210; A base 210a; The second connection portion
211; Main water supply connection hole 220; Input tube
300; Guide plate 310; The first drain pipe
320; A second drain pipe 321; Drain hole
400; Collecting tube 410; Passage
500a; A first water supply pipe 500b; The second water supply pipe
600; Guide plate

Claims (9)

A case having a space portion therein and having an opening portion at an upper portion and a lower portion;
A base which is coupled to be able to close an opening formed in a lower portion of the case and in which an exhaust gas is supplied to an internal space portion of the case;
A guide plate disposed at a space inside the case and spaced apart from the base by a predetermined distance;
A collection tube having one end coupled to the guide plate and the other end coupled to an upper opening formed on an upper surface of the case,
A plurality of peripheral spraying tubes disposed on a circumferential surface of the collecting tube and having a plurality of peripheral spraying nozzles formed on the surface facing the collecting tube;
A central spray tube disposed at the center of the collection tube and having a plurality of central spray nozzles formed to face the inner surface of the collection tube; And
And a guide plate in the form of a screw, the guide plate having one end connected to the upper portion of the case and the other end connected to the upper side of the guide plate to guide the exhaust gas flowing through the input pipe in a spiral shape, Device. The method according to claim 1,
And a water level of a certain level is stored in a space formed through the coupling of the case and the base. [2] The apparatus according to claim 1,
And an inclined surface on a surface facing the input tube. [2] The apparatus according to claim 1,
And a plurality of first and second water pipes for collecting and discharging water sprayed through the center and peripheral spray pipes. 5. The method of claim 4,
Wherein the first drain pipe is formed to have a larger diameter than the second drain pipe. The water treatment system according to claim 4,
And a collecting pipe for collecting the water sprayed through the central spraying pipe. The apparatus according to claim 1,
And a plurality of through holes formed on the side wall so as to have a predetermined diameter and an interval. 8. The apparatus of claim 7,
Wherein the lower side is engaged with the guide plate and the upper side is engaged with the upper surface of the case. The apparatus according to claim 1,
Wherein at least one through hole is formed through the through hole and the diameter of the through hole disposed at the lower side is larger than the diameter of the through hole disposed at the upper side.

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