KR101636043B1 - Power device of ship - Google Patents

Abstract

According to an embodiment of the present invention, a power device for a ship is provided. The power device for a ship according to an embodiment of the present invention comprises: a combustion engine which generates power by burning fuel; an exhaust pipe which exhausts the exhaust gas of the combustion engine; a cleaning water supply pipe which supplies cleaning water; a scrubber which sprays the cleaning water supplied through the cleaning water supply pipe to the exhaust gas flowing through the exhaust pipe; and a cleaning water discharge pipe which discharges the cleaning water from the inside of the scrubber to supply the discharged cleaning water to a ballast water tank. Therefore, the present invention removes sulfur oxides from the exhaust gas while sterilizing microbes in ballast water.

Description

[0001] Power device of ship [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power unit for a ship, and more particularly, to a power unit for a ship having a structure capable of simultaneously removing sulfur oxides contained in exhaust gases and sterilizing microorganisms contained in ballast water.

Generally, various engines installed on a ship generate power by burning fossil fuels. At this time, the exhaust gas generated in the combustion process of the fuel includes harmful substances such as SOx, NOx, and PM, It can cause pollution.

In addition, the ship stores the ballast water in a ballast tank provided in the hull to maintain balance and draft. Since ballast water is discharged at the sea of the destination after being filled at the sea of the starting point, discharging without separate water treatment can cause water pollution and marine ecosystem change.

For these reasons, environmental regulations for air pollution and water pollution of vessels have been strengthened, and various processing devices have been applied to ships in order to satisfy various regulations. In the environmental regulations on air pollution, regulations that specify the sulfur content in the exhaust gas emitted from the engine when operating and docking the marine emission control area (ECA) are less than 0.1% A wet scrubber is generally used to remove the cargo. A wet scrubber removes sulfur oxides by gas-liquid contact with seawater, fresh water or alkaline solution and exhaust gas. In addition, among the environmental regulations on water pollution, regulation to kill microorganisms of a certain size or more contained in the equilibrium water of a ship has become effective, and electrolysis, ozone, ultraviolet rays, and the like have been used for sterilization of microorganisms.

However, in the conventional vessel, since the wet scrubber system for removing sulfur oxides and the ballast water treatment system for sterilizing microorganisms are separately provided, the installation and maintenance cost of the system is increased, and a wide installation space There is a problem that the space utilization in the ship is lowered.

Korean Patent Publication No. 10-2014-0123665 (2014. 10. 23)

SUMMARY OF THE INVENTION The present invention provides a power unit for a ship having a structure capable of simultaneously removing sulfur oxides contained in exhaust gas and sterilizing microorganisms contained in equilibrium water.

The technical objects of the present invention are not limited to the technical matters mentioned above, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a power unit for a ship including a combustion engine for generating power by burning fuel, an exhaust pipe for exhausting the exhaust gas of the combustion engine, A scrubber for spraying the scrubbing water supplied through the scrubbing water supply pipe to the exhaust gas flowing through the exhaust pipe, and a rinse water discharge pipe for discharging the scrubbing water in the scrubber to supply the rinse water to the ballast water tank .

The pH value of the washing water flowing in the washing water discharge pipe may be lower than the pH value of the washing water flowing in the washing water supply pipe.

The cleaning water is seawater and the survival rate of the microorganisms included in the washing water flowing in the washing water discharge pipe may be lower than the survival rate of microorganisms included in the washing water flowing inside the washing water supply pipe.

And a rinse water supply pipe connected to the ballast water tank at one end and connected to the rinse water supply pipe at the other end to supply rinse water stored in the ballast water tank to the rinse water supply pipe.

And a circulation pipe branched from the rinse water discharge pipe and circulating the rinse water discharged from the scrubber to the scrubber again.

And a discharge pipe branched from the cleaning water discharge pipe to discharge the washing water discharged from the scrubber to the sea.

Further comprising a neutralization processing unit installed at a downstream end of the scrubber to neutralize the washing water discharged from the scrubber and a purifier installed at a rear end of the scrubber to separate sludge contained in the washing water discharged from the scrubber, The sludge can be separated by using at least one of a centrifugal separator, a gravity separator, and a filter.

And a sterilizing unit disposed on at least one of the front and rear sides of the ballast tanks to sterilize the organisms or microorganisms contained in the washing water flowing into the ballast tanks or the washing water flowing out of the ballast tanks .

And a seawater flow tube having one end connected to at least one of the seawater inlet or the fresh water tank and the other end connected to the ballast tank, wherein the wash water supply pipe is branched from the seawater flow pipe and connected to the scrubber.

According to the present invention, the washing water that has passed through the wet scrubber system can be supplied to the ballast water tank and used as ballast water. That is, the conventional wet scrubber system and the ballast water treatment system are combined into one unit, thereby reducing the installation and maintenance cost of the system and increasing the space utilization in the ship. In addition, since the conventional ballast water treatment system can only be implemented by adding piping, it can be easily applied to existing vessels.

1 is a schematic view of a power unit of a ship according to an embodiment of the present invention.
FIG. 2 and FIG. 3 are operation diagrams for explaining the operation process of the power unit of the ship of FIG.
4 is an operation diagram illustrating a process of operating a power unit of a ship according to another embodiment of the present invention.
5 is a schematic view of a power unit of a ship according to another embodiment of the present invention.
FIGS. 6 and 7 are operation diagrams for explaining an operational process of the power unit of the ship of FIG.
8 is an operation diagram for explaining an operational process of a power unit of a ship according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a power unit of a ship according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG.

1 is a schematic view of a power unit of a ship according to an embodiment of the present invention.

The power unit 1 of the ship according to the embodiment of the present invention is a device capable of simultaneously removing the sulfur oxides contained in the exhaust gas (see G1 in FIG. 2) and treating the microorganisms contained in the equilibrium water. The power unit 1 of the ship passes the wet scrubber system and neutralizes the acidified cleansing water (see W2 in FIG. 2) to a pH value satisfying IMO (International Maritime Organization) treatment standard, It can be supplied to the tank 60 and used as ballast water. That is, the conventional wet scrubber system and the ballast water treatment system are combined into one unit, thereby reducing the installation and maintenance cost of the system and increasing the space utilization in the ship. Further, since the conventional ballast water treatment system can be implemented by adding piping, it can be easily applied to existing ships.

The power unit 1 for a ship according to the present invention includes a combustion engine 10, an exhaust pipe 20, a cleaning water supply pipe 30, a scrubber 40, and a rinse water discharge pipe 50.

The combustion engine 10 generates various power required for the ship by burning the fuel, and may be formed of, for example, a main engine, a generator engine, or the like. The combustion engine 10 normally generates power by burning the fossil fuel, and thus generates the exhaust gas G1 according to the combustion of the fossil fuel. The generated exhaust gas G1 includes a large amount of sulfur oxides and dust and is discharged to the outside through an exhaust pipe 20 connected to one side of the combustion engine 10. [

The exhaust pipe 20 is a pipe for exhausting the exhaust gas G1 of the combustion engine 10 and has one end connected to the combustion engine 10 and the other end connected to one side of a scrubber 40 to be described later. Since the exhaust gas G1 flows inside the exhaust pipe 20, it is preferable that the exhaust pipe 20 is formed of a material having excellent heat resistance.

Meanwhile, the washing water supply pipe 30 is a pipe for supplying the scrubber 40 with washing water (see W1 in FIG. 2), which is at least one of seawater or fresh water or mixed water of seawater and fresh water. Or a fresh water tank (not shown) and the other end to the scrubber 40. Hereinafter, the structure in which the cleansing water W1 is limited to seawater, the structure in which one end of the cleansing water supply pipe 30 is connected to the seawater inlet and the other end is connected to the scrubber 40 will be described more specifically. At least one pump 31 is provided on the cleaning water supply pipe 30 so that the cleaning water W1 can be smoothly supplied to the scrubber 40. [

The scrubber 40 sprayes the washing water W1 supplied through the washing water supply pipe 30 to the exhaust gas G1 flowing through the exhaust pipe 20 to vaporize the exhaust gas G1 and the washing water W1 And may be a conventional wet scrubber. At this time, the cleaning water supply pipe 30 is disposed at the upper portion of the scrubber 40 at the end portion located inside the scrubber 40, and is branched into a plurality of sprays to spray the cleaning water W1 in the form of fine particles. That is, the cleansing water supply pipe 30 disposed at the upper part of the scrubber 40 sprays the cleansing water W1 toward the lower part of the scrubber 40 where the exhaust pipe 20 is located, and the exhaust gas G1 and the cleansing water W1 can be effectively contacted. The sulfur oxide and dust contained in the exhaust gas G1 can be removed as the exhaust gas G1 and the cleansing water W1 come into contact with each other in the scrubber 40 and the sulfur oxide and dust- (See G2 in Fig. 2) may be discharged to the outside through a separate discharge pipe 41. Fig. Since the exhaust gas G2 discharged through the discharge pipe 41 is in a state in which sulfur oxides and dust are removed, it does not cause air pollution even if it is discharged into the atmosphere.

However, the present invention is not limited to the case where the end portion of the washing water supply pipe 30 located inside the scrubber 40 is branched into a plurality of portions. For example, the washing water supply pipe 30 is formed with one end to separate the washing water W1 into fine particles It can also be sprayed in the form.

The cleansing water W2, which absorbs sulfur oxides and dusts through contact with the exhaust gas G1 containing sulfur oxides and dust, is discharged through the cleansing water discharge pipe 50.

The washing water discharge pipe 50 is a tube for discharging the washing water W2 in the scrubber 40 and supplying it to the ballast water tank 60. The washing water discharge pipe 50 is connected to the scrubber 40 at one end, ). At this time, the neutralization processing unit 90 and the purification unit 100 may be installed on the washing water discharge pipe 50.

The neutralization treatment section 90 is provided at the rear end of the scrubber 40 and neutralizes the washing water W2 discharged from the scrubber 40 and flowing through the washing water discharge pipe 50 to a pH value satisfying the IMO treatment water standard . The washing water W2 discharged from the scrubber 40 through the washing water discharge pipe 50 is in a state of absorbing sulfur oxides and dust contained in the exhaust gas G1 and flows in the washing water discharge pipe 50 The pH value of the cleansing water W2, that is, the pH value is lower than the pH value of the cleansing water W1 flowing in the cleansing water supply pipe 30. [ In other words, the washing water W2 flowing in the washing water discharge pipe 50 is acidified by sulfur oxides, and the pH value is lower than the washing water W1 flowing in the washing water supplying pipe 30. Therefore, when the cleansing water W2 having a low pH value is directly discharged to the sea, problems such as water pollution or marine ecosystem change may occur. The neutralized water W2 in the neutralized state can be supplied to the ballast water tank 60 as the ballast water by neutralizing the cleansing water W2 to a pH value satisfying the IMO treatment water standard. Further, even if the washing water W2 is discharged through the outlet pipe 80 to be described later, there is no problem such as water pollution or a change in marine ecosystem. However, the neutralization treatment section 90 is not limited to being installed on the washing water discharge pipe 50. For example, the neutralization treatment section 90 may be installed inside the scrubber 40. [ The cleansing water W2 neutralized in the neutralization processing unit 90 is supplied to the purification unit 100. [

The purifying section 100 separates sludge (see S in FIG. 2) contained in the washing water W2 discharged from the scrubber 40, which is provided at the rear end of the scrubber 40, The sludge S can be separated using at least one of a centrifuge, a gravity separator, and a filter. The cleaning water W2 in a state in which the sludge S is removed can be supplied to the ballast water tank 60 by forming the cleaning unit 100 on the washing water discharge pipe 50. [ A sludge storage tank 110 is connected to one side of the purifying unit 100 to separately store the sludge S separated from the washing water W2. The washing water W2 that has passed through the purification unit 100 and from which the sludge S has been removed is supplied to the ballast water tank 60.

The ballast tank 60 stores the cleansing water W2 discharged through the cleansing water discharge pipe 50 to maintain the equilibrium of the ship. At least one ballast tank 60 may be installed in the ship. As described above, the cleansing water W2 flowing in the cleansing water discharge pipe 50 is acidified by sulfur oxides, and the pH value is lower than the cleansing water W1 flowing in the cleansing water supply pipe 30. Therefore, the survival rate of the microorganisms contained in the washing water W2 flowing in the washing water discharge pipe 50 is lower than the survival rate of the microorganisms contained in the washing water W1 flowing in the washing water feeding pipe 30.

That is, the washing water (W2) flowing in the washing water discharge pipe (50) is suitable for use as a ballast water because it satisfies the ballast water regulating condition that microorganisms should be killed due to low survival rate of the microorganisms due to acidification. By supplying the cleansing water W2, which has a low viability of microorganisms and is converted to a pH value satisfying the IMO treatment standard, to the ballast water tank 60 and used as ballast water, a separate ballast water treatment system Can be omitted, which not only reduces the installation and maintenance cost of the system, but also increases the space utilization in the ship. In addition, since the conventional wet scrubber system can be implemented by adding piping, it can be easily applied to existing ships.

At least one first valve 50a is provided on the washing water discharge pipe 50 to control the flow of the washing water W2. The first valve 50a may be installed in front of the ballast water tank 60 and the washing water W2 that has passed through the first valve 50a may be supplied to the sterilizing unit 120.

The sterilizing treatment section 120 is installed at least one of the front side and the rear side of the ballast water tank 60 so that the washing water W2 flowing into the ballast water tank 60 or the washing water flowing out from the ballast water tank 60 W2) is further sterilized. In other words, the sterilizing treatment unit 120 further sterilizes the microorganisms remaining in the washing water W2 and may be, for example, a strong acidifying unit, an electrolytic unit, an ozone generating unit, an ultraviolet unit, a plasma unit, or the like. The sterilization treatment unit 120 can selectively operate the microbes if the ballast water regulatory condition is strict, thereby further sterilizing the microorganisms. The washing water W2 that has passed through the sterilizing treatment section 120 is supplied to the ballast water tank 60 and used as ballast water and the washing water W2 discharged from the ballast water tank 60 is discharged to the sea, For example, a heat exchanger, and can be used as cooling water.

On the other hand, a circulation pipe 70 may be disposed on one side of the washing water discharge pipe 50. The circulation pipe 70 is a pipe for circulating the washing water W2 branched from the washing water discharge pipe 50 and discharged from the scrubber 40 to the scrubber 40, Can be branched from the discharge pipe (50). The circulating pipe 70 is branched from the washing water discharge pipe 50 located at the rear end of the purifying unit 100 so that the washing water W2 in a state in which the sludge S is removed can be circulated to the scrubber 40. [ The end of the circulation pipe 70 located inside the scrubber 40 is connected to the cleaning water supply pipe 30 but the present invention is not limited thereto. For example, the circulation pipe 70 and the cleaning water supply pipe (30) are separated from each other and can independently spray wash water (W1, W2). On the circulation pipe 70, at least one second valve 70a is provided to control the flow of the washing water W2.

An outlet pipe 80 may be disposed on one side of the washing water discharge pipe 50. The outflow pipe 80 is a tube for discharging the washing water W2 branched from the scrubber 40 by being branched from the scrubbing water discharge pipe 50. The circulation pipe 80 is connected to the rear end of the purifier 100, The washing water can be branched from the washing water discharge pipe 50 located at the bottom of the washing tank. The outlet pipe 80 is branched from the washing water discharge pipe 50 located at the rear end of the purifying unit 100 so that the washing water W2 in the state of being converted to the pH value satisfying the IMO treatment water standard and the sludge S being removed ) May be discharged to sea. However, the discharge pipe 80 is not limited to the discharge of the washing water W2 in the sea. For example, the discharge pipe 80 may supply the washing water W2 to various uses. At least one third valve 80a is provided on the outlet pipe 80 to control the flow of the washing water W2.

The operation of the power unit 1 of the ship will now be described in more detail with reference to Figs. 2 and 3. Fig.

FIG. 2 and FIG. 3 are operation diagrams for explaining the operation process of the power unit of the ship of FIG.

The power unit 1 of the ship according to the embodiment of the present invention neutralizes the cleansing water W2 which has passed through the scrubber 40 and acidified to a pH value satisfying the IMO treatment water standard, ) To be used as ballast water. Therefore, a separate ballast water treatment system for killing microorganisms can be omitted, which not only reduces the installation and maintenance costs of the system, but also increases the space utilization in the vessel. In addition, since the conventional ballast water treatment system can only be implemented by adding piping, it can be easily applied to existing vessels.

Fig. 2 is an operation diagram showing a state in which washing water discharged from a scrubber is supplied to a ballast water tank.

The exhaust gas G1 of the combustion engine 10 flows into the scrubber 40 through the exhaust pipe 20 and the washing water W1 is supplied to the scrubber 40 through the washing water supply pipe 30. [ At this time, since the washing water supply pipe 30 located at the upper part of the scrubber 40 sprayes the washing water W1 toward the lower part of the scrubber 40 where the exhaust pipe 20 is located, the exhaust gas G1 and the washing water W1) can effectively make gas-liquid contact. The sulfur oxide and dust contained in the exhaust gas G1 can be removed as the exhaust gas G1 and the cleansing water W1 come into contact with each other and the exhaust gas G2 from which the sulfur oxide, 41, respectively. The cleansing water W2 that has absorbed sulfur oxides and dust through contact with the exhaust gas G1 is discharged through the cleansing water discharge pipe 50 and is discharged by the neutralization processing unit 90 to a pH value . The sludge S contained in the washing water W2 is separated by the purifying unit 100 installed on the washing water discharge pipe 50 and stored in the sludge storage tank 110. [

When the washing water W2 discharged from the scrubber 40 is supplied to the ballast water tank 60, the first valve 50a of the washing water discharge pipe 50 is opened and the third valve 80a are closed. At this time, the second valve 70a of the circulation pipe 70 can be selectively opened. The washing water W2 flowing through the washing water discharge pipe 50 flows into the ballast water tank 60 through the sterilizing treatment unit 120 by opening the first valve 50a provided in front of the ballast water tank 60 So that the equilibrium of the ship can be maintained. The washing water W2 flowing through the washing water discharge pipe 50 is suitable for use as a ballast water because the microorganism has a low survival rate and is converted to a pH value satisfying the IMO treatment water standard.

 The washing water W2 discharged from the ballast water tank 60 can be discharged to the sea or supplied to various places of use.

On the other hand, as shown in the figure, when the second valve 70a is opened, the washing water W2 flowing through the washing water discharge pipe 50 flows through the circulation pipe 70 and circulates to the scrubber 40. A part of the washing water W2 flowing through the washing water discharge pipe 50 is circulated to the scrubber 40 through the circulation pipe 70 so that the amount of the washing water W1 supplied through the washing water supply pipe 30 .

3 is an operation diagram showing a state in which the washing water discharged from the scrubber is discharged to the sea.

Exhaust gas G1 and cleaning water W1 of the combustion engine 10 are supplied to the scrubber 40 through the exhaust pipe 20 and the cleaning water supply pipe 30, respectively. The sulfur oxide and dust contained in the exhaust gas G1 can be removed as the exhaust gas G1 and the cleansing water W1 come into contact with each other and the exhaust gas G2 from which the sulfur oxide, 41, respectively. The cleansing water W2 that has absorbed sulfur oxides and dust is discharged through the cleansing water discharge pipe 50 and is neutralized to a pH value satisfying the IMO treatment water standard by the neutralization treatment unit 90. The sludge S contained in the washing water W2 is separated by the purifying unit 100 installed on the washing water discharge pipe 50 and stored in the sludge storage tank 110. [

When discharging the washing water W2 discharged from the scrubber 40 to the sea, the third valve 80a is opened and the first valve 50a is closed. At this time, the second valve 70a can be selectively opened. By opening the third valve 80a, the washing water W2 flowing through the washing water discharge pipe 50 can be discharged to the sea through the outlet pipe 80 or supplied to various places of use.

On the other hand, as shown in the figure, when the second valve 70a is opened, the washing water W2 flows through the circulation pipe 70 and circulates to the scrubber 40.

Hereinafter, referring to Fig. 4, the power unit 1-1 of a ship according to another embodiment of the present invention will be described in detail.

4 is an operation diagram illustrating a process of operating a power unit of a ship according to another embodiment of the present invention.

The power unit 1-1 of the ship according to another embodiment of the present invention includes a washing water supply pipe 130 having one end connected to the ballast water tank 60 and the other end connected to the washing water supply pipe 30 . The power unit 1-1 of the ship according to another embodiment of the present invention includes a washing water supply pipe 130 having one end connected to the ballast water tank 60 and the other end connected to the washing water supply pipe 30 The present embodiment is substantially the same as the above-described embodiment. Accordingly, the description of the remaining components will be replaced by the foregoing description, unless otherwise noted.

The washing water re-supply pipe 130 is a pipe for re-supplying the washing water W2 stored in the ballast water tank 60 to the washing water supply pipe 30. The washing water supply pipe 130 has one end connected to the ballast water tank 60, Is connected to one side of the water supply pipe (30). When the washing water supply pipe 130 is connected to one side of the ballast water tank 60 so that the washing water W2 stored in the ballast water tank 60 for balancing the ship is to be discharged, A part of the number W2 can be supplied to the cleaning water supply pipe 30. Therefore, sulfur oxide and dust contained in the exhaust gas G1 can be removed even if the cleansing water W1 is not supplied from the seawater inlet or the fresh water tank.

Hereinafter, the power unit 1-2 of the ship according to another embodiment of the present invention will be described in detail with reference to Figs. 5 to 7. Fig.

5 is a schematic view of a power unit of a ship according to another embodiment of the present invention.

In the power unit 1-2 of the ship according to another embodiment of the present invention, the washing water supply pipe 30 is branched from the sea water flow pipe 200 and connected to the scrubber 40. The power unit 1-2 of the ship according to another embodiment of the present invention is different from the power unit 1-2 of the embodiment described above except that the washing water supply pipe 30 is branched from the sea water flow pipe 200 and connected to the scrubber 40 Substantially the same. Accordingly, the description of the remaining components will be replaced by the foregoing description, unless otherwise noted.

The cleaning water supply pipe 30 is a pipe for supplying the scrubber 40 with cleaning water (see W1 in FIG. 6), which is at least one of seawater or fresh water or mixed water of seawater and fresh water, is branched from the seawater flow pipe 200, (Not shown).

The seawater flow tube 200 is a tube for supplying at least one of seawater or fresh water or a mixed water of seawater and fresh water to the ballast water tank 60. The seawater flow tube 200 is connected at one end to a seawater inflow port (not shown) At least one of which may be connected to the ballast tank 60 at the other end. A pretreatment filter 300 for removing microorganisms having a specific size or more is installed on the seawater flow tube 200 and the cleansing water supply pipe 30 is branched at the rear end of the pretreatment filter 300. At least one fifth valve 200a may be provided on the sea water flow pipe 200 to control the flow of at least one of seawater or fresh water or mixed water of seawater and fresh water. One end of the seawater flow pipe 200 is connected to the seawater inlet port and the cleansing water supply pipe 30 is branched from the sea water flow pipe 200 The structure is explained more emphatically.

A part of the seawater W flowing into the seawater flow pipe 200 through the seawater inlet port is supplied to the ballast water tank 60 and a part of the seawater W is supplied to the scrubber 40 through the washing water supply pipe 30. At this time. The ratio of the seawater W supplied to the ballast water tank 60 to the washing water W1 supplied to the scrubber 40 may be about 9: 1. At least one pump 31 is provided on the cleaning water supply pipe 30 so that the cleaning water W1 can be smoothly supplied to the scrubber 40. [

The scrubber 40 sprays the cleaning water W1 supplied through the cleaning water supply pipe 30 to the exhaust gas (see G1 in Fig. 6) flowing through the exhaust pipe 20 to remove the exhaust gas G1 and the cleaning water W1) is brought into gas-liquid contact, and can be a conventional wet scrubber. The sulfur oxide and dust contained in the exhaust gas G1 can be removed as the exhaust gas G1 and the cleansing water W1 come into contact with each other in the scrubber 40 and the sulfur oxide and dust- (See G2 in FIG. 6) may be discharged to the outside through a separate discharge pipe (41). Since the exhaust gas G2 discharged through the discharge pipe 41 is in a state in which sulfur oxides and dust are removed, it does not cause air pollution even if it is discharged into the atmosphere.

The acidified cleansing water (see W2 in FIG. 6) which absorbs sulfur oxides and dust through contact with the exhaust gas G1 containing sulfur oxides and dust is discharged through the washing water discharge pipe 50.

The washing water discharge pipe 50 is a tube for discharging the washing water W2 in the scrubber 40 and supplying it to the ballast water tank 60. The washing water discharge pipe 50 is connected to the scrubber 40 at one end, ). At this time, the washing water discharge pipe 50 may be connected to the ballast water tank 200 through the sea water flow pipe 200 at the other end thereof connected to the sea water flow pipe 200. The washing water discharge pipe 50 is connected to the sea water flow pipe 200 so that the washing water W2 flowing through the washing water discharge pipe 50 is mixed with the sea water W flowing through the sea water flow pipe 200, 60). As described above, the washing water W2 discharged from the scrubber 40 is acidified by absorbing sulfur oxide, dust, and the like. As the cleansing water W2 is mixed with the seawater W flowing through the seawater flow pipe 200 and supplied to the ballast water tank 60, the microorganisms contained in the seawater W can be killed. In other words, since the microorganisms contained in the seawater W are killed by the acidified cleansing water W2, it is suitable for use as a ballast water.

The washing water W2 flowing through the washing water discharge pipe 50 is separated from the sludge S by the purging unit 100 before being mixed with the seawater W, And is stored in the storage tank 110. The mixed water of the cleansing water W2 and the seawater W can be further sterilized by the sterilizing treatment unit 120 and then supplied to the ballast water tank 60. The mixed water of the washing water W2 discharged from the ballast water tank 60 W2) and the seawater W is neutralized to a pH value satisfying the IMO treatment water standard by the neutralization processing unit 90 and then discharged to the sea or can be used in various necessary places.

At least one first valve 50a may be provided on the washing water discharge pipe 50 to control the flow of the washing water W2 and the first valve 50a may be disposed behind the purifying unit 100 have. The circulation pipe 70 and the outlet pipe 80 are respectively branched from the rinse water discharge pipe 50 and can be branched in front of the first valve 50a. The circulation pipe 70 and the discharge pipe 80 are branched from the front of the first valve 50a so that the washing water W2 in a state in which the sludge S is removed is circulated to the scrubber 40 or discharged . At this time, a separate neutralization treatment section is provided on the outflow pipe 80 to convert the washing water W2 to a pH value satisfying the IMO treatment water standard, and then discharge it to the sea.

Hereinafter, with reference to Figs. 6 and 7, the operation of the power unit 1-2 of the ship will be described in more detail.

FIGS. 6 and 7 are operation diagrams for explaining an operational process of the power unit of the ship of FIG.

The power unit 1-2 of the ship according to another embodiment of the present invention mixes the cleansing water W2 that has passed through the scrubber 40 and acidified in the sea water W flowing in the sea water flow pipe 200, To the water tank (60). Therefore, the microorganisms contained in the seawater W can be killed, whereby a separate process for killing the microorganisms can be omitted.

6 is an operation diagram showing a state in which washing water discharged from the scrubber is supplied to the ballast water tank.

The exhaust gas G1 of the combustion engine 10 flows into the scrubber 40 through the exhaust pipe 20 and part of the seawater W having passed through the pretreatment filter 300 of the seawater flow pipe 200 flows into the scrubber 40, Is supplied to the scrubber (40) by the cleansing water (W1) through the drain pipe (30), and the remaining part is supplied to the ballast water tank (60). The cleaning water supply pipe 30 located at the upper portion of the scrubber 40 sprayes the cleaning water W1 toward the lower portion of the scrubber 40 where the exhaust pipe 20 is located, so that the exhaust gas G1 and the cleaning water W1 Liquid contact can be effected effectively. The sulfur oxide and dust contained in the exhaust gas G1 can be removed as the exhaust gas G1 and the cleansing water W1 come into contact with each other and the exhaust gas G2 from which the sulfur oxide, 41, respectively. The acidified cleansing water W2 absorbing sulfur oxide and dust through contact with the exhaust gas G1 is discharged through the washing water discharge pipe 50 and the sludge S is separated by the purifying unit 100 . The separated sludge (S) is stored in the sludge storage tank (110).

When the washing water W2 discharged from the scrubber 40 is supplied to the ballast water tank 60, the first valve 50a of the washing water discharge pipe 50 is opened and the third valve 80a are closed. At this time, the second valve 70a of the circulation pipe 70 can be selectively opened. The first valve 50a is opened so that the washing water W2 flowing through the washing water discharge pipe 50 is joined to the seawater W flowing through the seawater flow pipe 200 and passes through the sterilizing treatment unit 120, (Not shown). Since the washing water W2 flowing through the washing water discharge pipe 50 is acidified by sulfur oxides, the microorganisms contained in the sea water W can be killed, The mixed water of the washed cleansing water W2 and the sea water W can be stored as the equilibrium water.

The mixed water of the cleansing water W2 discharged from the ballast water tank 60 and the seawater W is neutralized to a pH value satisfying the IMO treated water standard by the neutralization treatment unit 90 and then discharged to the sea, Can be supplied.

As shown in the figure, when the second valve 70a is opened, the washing water W2 flowing through the washing water discharge pipe 50 flows through the circulation pipe 70 and circulates to the scrubber 40. A part of the washing water W2 flowing through the washing water discharge pipe 50 is circulated to the scrubber 40 through the circulation pipe 70 so that the amount of the washing water W1 supplied through the washing water supply pipe 30 .

Fig. 7 is an operation diagram showing a state in which the washing water discharged from the scrubber is discharged to the sea.

Exhaust gas G1 and cleaning water W1 of the combustion engine 10 are supplied to the scrubber 40 through the exhaust pipe 20 and the cleaning water supply pipe 30, respectively. The sulfur oxide and dust contained in the exhaust gas G1 can be removed as the exhaust gas G1 and the cleansing water W1 come into contact with each other and the exhaust gas G2 from which the sulfur oxide, 41, respectively. The washing water W2 absorbing sulfur oxide and dust is discharged through the washing water discharge pipe 50 and the sludge S contained in the washing water W2 is separated by the purifying unit 100, (110).

When discharging the washing water W2 discharged from the scrubber 40 to the sea, the third valve 80a is opened and the first valve 50a is closed. At this time, the second valve 70a and the fifth valve 200a can be selectively opened. By opening the third valve 80a, the washing water W2 flowing through the washing water discharge pipe 50 can be discharged to the sea through the outlet pipe 80 or supplied to various places of use. At this time, since a separate neutralization treatment section is provided on the outflow pipe 80, the cleansing water W2 can be discharged to the sea or supplied to the use site in a neutralized state at a pH value satisfying the IMO treated water standard.

As shown, when the second valve 70a is opened, the washing water W2 flows through the circulation pipe 70 and circulates to the scrubber 40. When the fifth valve 200a is closed, The inflow of the seawater W into the ballast water tank 60 is blocked.

Hereinafter, referring to Fig. 8, the power unit 1-3 of the ship according to another embodiment of the present invention will be described in detail.

8 is an operation diagram for explaining an operational process of a power unit of a ship according to another embodiment of the present invention.

The power unit 1-3 of the ship according to another embodiment of the present invention includes a washing water supply pipe 130 having one end connected to the ballast water tank 60 and the other end connected to the washing water supply pipe 30 . The power unit 1-3 of the ship according to another embodiment of the present invention includes a washing water supply pipe 130 having one end connected to the ballast water tank 60 and the other end connected to the washing water supply pipe 30 The present invention is substantially the same as the above-described embodiment, Accordingly, the description of the remaining components will be replaced by the foregoing description, unless otherwise noted.

The washing water re-supply pipe 130 is a pipe for re-supplying the mixed water of the washing water W2 and the sea water W stored in the ballast water tank 60 to the washing water supply pipe 30. The one end portion is connected to the ballast water tank 60 And the other end is connected to one side of the cleansing water supply pipe 30. The mixed water of the washing water W2 and the sea water W stored in the ballast water tank 60 for maintaining the equilibrium of the ship is connected to the washing water source pipe 130 at one side of the ballast water tank 60 A part of the mixed water of the washing water W2 discharged into the sea and the seawater W can be supplied to the washing water supply pipe 30. [ Therefore, sulfur oxide and dust contained in the exhaust gas G1 can be removed even if the cleansing water W1 is not supplied from the seawater inlet or the fresh water tank. At least one pump 131 is provided on the washing water re-supply pipe 130 so that the mixed water of the washing water W2 and the sea water W can be smoothly supplied to the washing water supply pipe 30.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1, 1-1, 1-2, 1-3: Ship's power system
10: combustion engine 20: exhaust pipe
30: Cleaning water supply pipe 31: Pump
40: scrubber 41: discharge pipe
50: Cleaning water discharge pipe 50a: First valve
60: ballast tank 70: circulation pipe
70a: second valve 80: outlet pipe
80a: third valve 90: neutralization processing section
100: purifier 110: sludge storage tank
120: sterilization treatment unit 130: cleaning water supply pipe
130a: fourth valve 131: pump
200: Seawater flow tube 200a: Fifth valve
300: Pretreatment filter G1, G2: Exhaust gas
S: Sludge W: Seawater
W1, W2: washing water

Claims (9)

A combustion engine for generating power by burning fuel;
An exhaust pipe for exhausting the exhaust gas of the combustion engine;
A cleaning water supply pipe for supplying cleaning water;
A scrubber for spraying cleaning water supplied through the cleaning water supply pipe to the exhaust gas flowing through the exhaust pipe;
A scrubbing water discharge pipe for discharging the scrubbing water inside the scrubber and supplying the scrubbing water to the ballast water tank; And
And a circulation pipe branched from the rinse water discharge pipe to circulate rinse water discharged from the scrubber to the scrubber again. The power plant of claim 1, wherein the pH value of the washing water flowing in the washing water discharge pipe is lower than the pH value of the washing water flowing in the washing water supply pipe. The washing machine according to claim 2, wherein the washing water is seawater, and the survival rate of the microorganisms contained in the washing water flowing in the washing water discharge pipe is lower than the survival rate of the microorganisms contained in the washing water flowing in the washing water feeding tube Power device. The washing machine according to claim 1, further comprising a washing water source pipe connected to the ballast water tank at one end and connected to the washing water supply pipe at the other end to supply washing water stored in the ballast water tank to the washing water supply pipe . delete The power unit for a ship according to claim 1, further comprising an outlet pipe branched from the cleansing water discharge pipe to discharge cleansing water discharged from the scrubber to the sea. 2. The scrubber according to claim 1, further comprising: a neutralization processing unit installed at a rear end of the scrubber to neutralize the washing water discharged from the scrubber;
Further comprising a purifier installed at a rear end of the scrubber to separate sludge contained in the washing water discharged from the scrubber,
Wherein the purging unit separates the sludge using at least one of a centrifuge, a gravity separator, and a filter. The sterilization apparatus according to claim 1, further comprising: a sterilizing treatment unit installed at least one of the front and rear sides of the ballast water tank for sterilizing the organisms or microorganisms contained in the washing water flowing into the ballast water tank or the washing water flowing out of the ballast water tank, Further comprising: a power unit for the ship. A combustion engine for generating power by burning fuel;
An exhaust pipe for exhausting the exhaust gas of the combustion engine;
A cleaning water supply pipe for supplying cleaning water;
A scrubber for spraying cleaning water supplied through the cleaning water supply pipe to the exhaust gas flowing through the exhaust pipe;
A scrubbing water discharge pipe for discharging the scrubbing water inside the scrubber and supplying the scrubbing water to the ballast water tank; And
And a seawater flow tube having one end connected to at least one of the seawater inlet or fresh water tank and the other end connected to the ballast tank,
Wherein the cleaning water supply pipe is branched from the seawater flow pipe and connected to the scrubber.

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