KR101792726B1 - Scrubber system for cleaning exhaust gas having a first wahsing portion and a second washing portion in series - Google Patents

Abstract

The present invention relates to a scrubber system for disposing of exhaust gas having a first cleaning portion and a second cleaning portion connected in series. The scrubber system includes a scrubber for removing sulfur oxides from exhaust gas caused by an engine of a vessel and other vehicles and a cleaning unit for cleaning contaminated cleaning solution supplied from the scrubber. The cleaning unit includes a first cleaning portion and a second cleaning portion connected in series. Accordingly, the system is capable of operating stably for a long time in a closed mode and reducing installation costs. Further, the system has a hybrid system through a combination of the first cleaning portion with a filter and a second cleaning portion with a hydrocyclone and is capable of operating in both an open and closed mode.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cleaning system for exhaust gas treatment having a first washing part and a second washing part connected in series,

The present invention relates to a cleaning system for treating an exhaust gas having a first cleaning part and a second cleaning part connected in series and comprises a scrubber for removing sulfur oxides from the exhaust gas generated in an engine of a ship, Wherein the cleaning unit includes a first washing unit and a second washing unit connected in series so that the system can be operated stably for a long time in a closed mode and installation investment cost is reduced, And a second cleaning unit including a hydrocyclone, so that the system is capable of operating in both the open mode and the closed mode, the first cleaning unit and the second cleaning unit connected in series, The present invention relates to a cleaning system for treating an exhaust gas.

Currently, the shipping industry is working to protect the marine environment when the ship runs, and the International Maritime Organization sulfur oxides from an exhaust gas generated through a marine engine to the compliance is set to (IMO) (SO _x) such as harmful emissions.

A scrubber is used to remove the sulfur oxides contained in the exhaust gas. A scrubber is a device that removes moisture in a steam by flowing multiple layers of a wave plate and flowing steam therebetween, or passes gas containing air pollutants through it to absorb and separate contaminants in the gas.

Since the washing water supplied to the scrubber contains soot and various combustion residues, there is a possibility that the marine ecosystem is severely damaged when the washing water is directly discharged to the ocean without being purified. Accordingly, there is a need for a water treatment system that removes contaminants from the wash water before discharging the wash water supplied in the scrubber to the ocean to purify the exhaust gas.

1 is a configuration diagram of a conventional cleaning system for exhaust gas treatment.

Hereinafter, a conventional cleaning system for exhaust gas treatment will be described. A centrifuge 850 can be used to remove contaminants from the contaminated wash water through adsorption with sulfur oxides. The contaminated washing water is supplied from the scrubber 810 to the circulating water tank 830. The contaminated washing water stored in the circulating water tank 830 is supplied to the centrifugal separator 850, The sludge separated from the washing water through the circulating water tank 830 is transferred to the sludge tank 870 and the washed washing water is transferred to the circulating water tank 830. The washed washing water, And is supplied to the scrubber 810. Accordingly, during the operation of the system, the washing water is circulated repeatedly along the closing path (the scrubber 810 -> the circulating water tank 830 -> the centrifuge 850 -> the circulating water tank 830 -> the scrubber 810) do.

However, the flow rate of the washing water circulating in the centrifugal separator 850 and the circulating water tank 830 is approximately 0.15 to 0.5 m ³ / MWh, which is less than 2% of the circulating flow rate of the scrubber 810 and the circulating water tank 830. . Therefore, as the operation time of the system becomes longer, the turbidity of the washing water circulating in the closed path continuously increases, so that it becomes more stable operation due to breakage of various sensors installed in the system, occurrence of back pressure and overload of centrifugal separator . Therefore, the operating time of the system is generally limited to less than 24 hours. In order to increase the operation time of the system, the capacity of the circulation water tank 830 or the treatment capacity of the water treatment system should be increased. However, since the single centrifugal separator 850 has a limited processing capacity, Should be connected in parallel. Accordingly, the installation space of the water treatment system due to the installation of the plurality of centrifuges 850 increases, and the facility investment cost increases.

No. 10-1503582 relates to a cleaning facility for gas scrubber fluids, and to a cleaning facility for contaminated scrubber fluids from an exhaust gas scrubber fluid loop (9). The cleaning facility includes a means for allowing a portion of the contaminated scrubber fluid to flow out of the scrubber fluid loop 9, a disk stacking centrifuge 12 for separating contaminants and cleaned scrubber fluid from a portion of the fluid.

The above-mentioned patent uses a disk stacking type centrifuge to remove contaminants from contaminated fluids, so that there is a problem of the above-mentioned system operation time limitation, an increase in installation space of the water treatment system for increasing the operation time, Lt; / RTI >

Therefore, it is necessary to start the cleaning system for the exhaust gas treatment which can operate for a long time by preventing rapid increase of the turbidity of the washing water circulating along the closed path, so that there is no problem of increase in installation space of the water treatment system and increase in facility investment cost It is true.

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

The present invention relates to an exhaust gas purifying apparatus, comprising a first washing section for firstly cleaning contaminated washing water by adsorption with sulfur oxides or the like contained in an exhaust gas by a hydrocyclone, And a second cleaning unit that includes a first cleaning unit and a second cleaning unit that are capable of relatively increasing a closing mode operation time of the system in which the washing water circulates continuously along the closing path by preventing a rapid increase in turbidity of the washing water, And an object of the present invention is to provide a cleaning system for treating exhaust gas.

Further, according to the present invention, the contaminated washing water is firstly washed with a hydrocyclone before washing with a filter, and the washing water is separated into sludge having a large particle size, An object of the present invention is to provide a cleaning system for an exhaust gas treatment having a first washing part and a second washing part connected in series which can be operated for a long time in a closed mode by preventing an overload of the filter due to a long washing period.

In addition, the present invention is characterized in that when the system is operated in the open mode, the cleaning water is cleaned only through the first cleaning part to improve efficiency of system operation and to prevent overload, And a cleaning system for gas treatment.

It is another object of the present invention to provide a cleaning system for exhaust gas treatment having a first cleaning part and a second cleaning part connected in series which enables the system to construct a hybrid system that can operate both in an open mode and a closed mode .

The present invention also relates to a sludge tank for storing sludge separated from washing water through a filter and / or a hydrocyclone, and a sludge tank connected to the sludge tank and having an overflow To prevent the rapid increase of the turbidity of the washing water circulating through the system through a water supply pipe for re-transporting the amount of the sludge tank to the buffer tank and to minimize the volume of the accumulated sludge, And an object of the present invention is to provide a cleaning system for treating an exhaust gas having a first cleaning portion and a second cleaning portion connected in series.

Further, the present invention provides a heat exchange unit at one side of a closed path through which the washing water circulates to cool the washing water whose temperature continuously rises through contact with the exhaust gas in the scrubber when the system is operated in the closed mode, An object of the present invention is to provide a cleaning system for an exhaust gas treatment having a first washing part and a second washing part connected in series which enable the temperature of the washing water to be maintained at a certain level.

In addition, the present invention includes a bypass unit for allowing the washing water introduced into the system to be transported while bypassing the heat exchange unit when the system operates in the open mode, thereby preventing overloading of the heat exchange unit. And a second cleaning section, which is capable of cleaning the exhaust gas.

The present invention also includes a second seawater supply pipe connected to the buffer tank for introducing a predetermined amount of seawater into the buffer tank to prevent a rapid increase in the turbidity of the washing water circulating along the closed path when the system is operated in the closed mode And to provide a cleaning system for an exhaust gas treatment having a first washing part and a second washing part connected in series which can protect various sensors installed in the system and thereby ensure stable operation.

The present invention also provides a holding tank for storing additional washing water circulating through a closed path due to seawater flowing through the second seawater supply pipe when the system is operated in the closed mode, And to provide a cleaning system for an exhaust gas treatment having a first cleaning part and a second cleaning part connected in series, which can prevent the deterioration of the system and the stability of the system.

Further, the present invention is characterized in that a first supply pipe and a second supply pipe, each of which is provided with a pump, are connected to a first rinse water supply pipe through which the inflowed seawater is transported, and a predetermined amount of rinse water circulating in a closed path The first supply pipe is opened for transportation and the system opens both the first supply pipe and the second supply pipe in order to transport a large amount of seawater when operating in the open mode in which the seawater continuously flows, Which has a first washing part and a second washing part connected in series, which is connected to the first washing part and the second washing part.

According to an embodiment of the present invention, a cleaning system for cleaning an exhaust gas having a first cleaning portion and a second cleaning portion connected in series according to an embodiment of the present invention is characterized in that the cleaning unit has one end connected to the scrubber, And a buffer tank connected to the scrubber connection pipe for temporarily storing the contaminated cleaning water.

According to another embodiment of the present invention, the first washing portion of the exhaust gas treatment cleaning system having the first washing portion and the second washing portion connected in series according to the present invention is connected to the buffer tank, A hydrocyclone for separating the sludge from the contaminated washing water by centrifugal force generated by the swirling flow of the fluid and a hydrocyclone connected to the hydrocyclone and washed with the hydrocyclone And a first buffer tank connection pipe for transferring washing water to the buffer tank, wherein the second washing section includes a filter liquid inlet pipe connected to the first buffer tank connection pipe at one side thereof, And a filter for automatically washing the first washed wash water and filtering the sludge from the first washed wash water.

According to another embodiment of the present invention, the first buffer tank connection pipe of the cleaning system for exhaust gas treatment having the first cleaning part and the second cleaning part connected in series according to the present invention is provided at one side of the first buffer tank connection pipe And a first buffer tank shutoff valve installed to prevent the washing water from being firstly washed into the first buffer tank, wherein the filter liquid inlet pipe is installed at one side of the filter liquid inlet pipe, And a filter inlet valve for determining whether or not the primary washed water to be transported through the pipe is to be transported.

According to another embodiment of the present invention, in the cleaning system for treating exhaust gas having the first washing portion and the second washing portion connected in series according to the present invention, the flow rate of the washing water circulating through the filter is 0.5 m ³ / MWh to 10 m ³ / MWh.

According to another embodiment of the present invention, the first buffer tank shutoff valve of the cleaning system for exhaust gas treatment having the first washing part and the second washing part connected in series according to the present invention is opened when the system is operated in the open mode And the filter inlet valve is closed when the system is operated in the open mode and is opened when operating in the closed mode.

According to another embodiment of the present invention, the cleaning unit of the cleaning system for exhaust gas treatment having the first cleaning part and the second cleaning part connected in series according to the present invention stores the sludge filtered from the filter or the hydrocyclone, And a sludge storage unit for transferring moisture contained in the sludge to the buffer tank.

According to another embodiment of the present invention, the sludge reservoir of a cleaning system for exhaust gas treatment having a first cleaning part and a second cleaning part connected in series according to the present invention is configured to store sludge filtered from the filter and / or the cyclone A sludge tank and a sludge tank connected to the sludge tank, the sludge accumulating in the sludge has a water content over a certain level, the amount of overflow is transferred to the buffer tank to prevent the turbidity of the washing water circulating in the system from rapidly increasing The bonsai material supply pipe.

According to another embodiment of the present invention, the cleaning water supply unit of the cleaning system for exhaust gas treatment having the first washing unit and the second washing unit connected in series according to the present invention includes a first sea water supply pipe for introducing seawater into the ship, A first cleaning water supply pipe connected to the end of the first sea water supply pipe to transport the cleaning water; a cleaning unit connected to the end of the first cleaning water supply pipe to circulate the cleaning water through the closed path when the system operates in the closed mode; And a heat exchanger for cooling the water.

According to another embodiment of the present invention, the heat exchanger of the exhaust gas treatment cleaning system having the first washing part and the second washing part connected in series according to the present invention is provided at the front end side of the heat exchanging part, A second heat exchange valve installed at a distal end of the heat exchange unit, and a second heat exchange valve installed between the first heat exchange valve and the second heat exchange valve to cool the washing water transported through the heat exchange unit And a heat exchanger for cooling by mutual heat exchange with the seawater.

According to another embodiment of the present invention, the heat exchanger of the exhaust gas treatment cleaning system having the first washing part and the second washing part connected in series according to the present invention is provided at the front end side of the heat exchanging part, A second heat exchange valve installed at a distal end of the heat exchange unit, and a second heat exchange valve installed between the first heat exchange valve and the second heat exchange valve to cool the washing water transported through the heat exchange unit And a heat exchanger for cooling by mutual heat exchange with the seawater.

According to another embodiment of the present invention, when the system of the cleaning system for exhaust gas treatment having the first washing part and the second washing part connected in series according to the present invention operates in the closed mode, the first heat exchange valve and the second And opening the heat exchange valve to cool the washing water circulating through the closed path.

According to another embodiment of the present invention, the cleaning water supply unit of the cleaning system for exhaust gas treatment having the first cleaning unit and the second cleaning unit connected in series according to the present invention is connected to the end of the first cleaning water supply pipe, The bypass unit may further include a bypass unit for bypassing the heat exchange unit when the washing water is operated in the open mode, And a bypass valve that is configured to be able to be transported to the bypass section.

According to another embodiment of the present invention, when the system of the cleaning system for exhaust gas treatment having the first washing part and the second washing part connected in series according to the present invention is operated in the open mode, the bypass valve is opened, And closes the bypass valve when operated in the closed mode.

According to another embodiment of the present invention, the washing section of the cleaning system for treating exhaust gas having the first washing section and the second washing section connected in series is connected to the buffer tank to introduce seawater into the buffer tank And a second seawater supply pipe for preventing a rapid increase in the turbidity of the washing water circulating along the closed path.

According to another embodiment of the present invention, the cleaning unit of the cleaning system for exhaust gas treatment having the first cleaning part and the second cleaning part connected in series according to the present invention is characterized in that, when the system is operated in the closed mode, The filtration liquid storage unit may further include a holding tank for storing a predetermined amount of washing water cleaned by the filter, and a holding tank connected to the holding tank, And a filtrate discharge pipe for discharging the washing water stored in the holding tank after the shutdown mode of the system is stopped to the outside of the vessel, and the second washing unit further includes a filter liquid outlet pipe through which the washing water washed by the filter is transported And the filter liquid outlet pipe is connected to the filter to transfer the washed cleansing water to the buffer tank, It characterized in that it comprises a holding tank connection pipe to transport the cleansing water washing tank by a connecting tube and the filter to the holding tank.

According to another embodiment of the present invention, the first cleaning water supply pipe of the cleaning system for exhaust gas treatment having the first cleaning part and the second cleaning part connected in series according to the present invention is provided with a first supply pipe Wherein the first supply pipe is provided with a first supply valve and a first supply pump and the second supply pipe is provided with a first supply valve and a first supply pump on one side thereof, The second supply valve and the second supply valve are both opened when operating in the open mode, and only the first supply valve is opened when operating in the closed mode.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention relates to an exhaust gas purifying apparatus, comprising a first washing section for firstly cleaning contaminated washing water by adsorption with sulfur oxides or the like contained in an exhaust gas by a hydrocyclone, The operation of the system in which the washing water is continuously circulated along the closed path can be relatively increased.

Further, according to the present invention, the contaminated washing water is firstly washed with a hydrocyclone before washing with a filter, and the washing water is separated into sludge having a large particle size, Since the cleaning cycle is prolonged, the filter is prevented from being overloaded, so that the filter can be operated for a long time in the closed mode.

Further, when the system is operated in the open mode, the cleaning water is cleaned only through the first cleaning part, thereby improving efficiency of system operation and preventing overload.

In addition, the present invention has an effect of enabling a hybrid system capable of operating in both the open mode and the closed mode.

The present invention also relates to a sludge tank for storing sludge separated from washing water through a filter and / or a hydrocyclone, and a sludge tank connected to the sludge tank and having an overflow To prevent the rapid increase of the turbidity of the washing water circulating through the system through a water supply pipe for re-transporting the amount of the sludge tank to the buffer tank and to minimize the volume of the accumulated sludge, It is effective.

Further, the present invention provides a heat exchange unit at one side of a closed path through which the washing water circulates to cool the washing water whose temperature continuously rises through contact with the exhaust gas in the scrubber when the system is operated in the closed mode, There is an effect that the temperature of the washing water can be maintained at a certain level.

Further, the present invention has an effect of preventing an overload of the heat exchanging part by including a bypass part for allowing the washing water introduced into the system to be transported while bypassing the heat exchanging part when the system operates in the open mode.

The present invention also includes a second seawater supply pipe connected to the buffer tank for introducing a predetermined amount of seawater into the buffer tank to prevent a rapid increase in the turbidity of the washing water circulating along the closed path when the system is operated in the closed mode So that it is possible to protect various sensors and the like installed in the system, thereby stably operating the system.

The present invention also provides a holding tank for storing additional washing water circulating through a closed path due to seawater flowing through the second seawater supply pipe when the system is operated in the closed mode, And the like can be prevented and the stability of the system can be improved.

Further, the present invention is characterized in that a first supply pipe and a second supply pipe, each of which is provided with a pump, are connected to a first rinse water supply pipe through which the inflowed seawater is transported, and a predetermined amount of rinse water circulating in a closed path The first supply pipe is opened for transportation and the system opens both the first supply pipe and the second supply pipe in order to transport a large amount of seawater when operating in the open mode in which the seawater continuously flows, There is an effect.

1 is a schematic view of a conventional cleaning system for exhaust gas treatment
2 is a configuration diagram of a cleaning system for exhaust gas treatment having a first cleaning portion and a second cleaning portion connected in series according to an embodiment of the present invention
3 is a block diagram of a cleaning system for exhaust gas treatment having a first washing section and a second washing section connected in series according to FIG.
Fig. 4 is a schematic view of the cleaning water supply unit according to Fig. 2
Fig. 5 is a block diagram of the washing water supply unit according to Fig. 3
Fig. 6 is a block diagram of the first supply pipe according to Fig. 5
Fig. 7 is a block diagram of the second supply pipe according to Fig. 5
8 is a block diagram of the neutralizer feed pipe according to FIG.
Fig. 9 is a block diagram of the exhaust gas supply pipe according to Fig. 3
Fig. 10 is a schematic diagram of the cleaning unit according to Fig. 2
Fig. 11 is a block diagram of the cleaning unit according to Fig. 10
Fig. 12 is a block diagram of the cyclone inflow pipe according to Fig.
13 is a block diagram of the first sludge tank connecting pipe according to Fig.
14 is a block diagram of the first buffer tank connection pipe according to FIG.
Fig. 15 is a block diagram of the filter liquid inflow pipe according to Fig. 11
Fig. 16 is a block diagram of the filter liquid outlet tube according to Fig. 11
Fig. 17 is a block diagram of the feed water supply pipe according to Fig. 11
Fig. 18 is a block diagram of the filtrate discharge pipe according to Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a cleaning system for exhaust gas treatment having a first cleaning part and a second cleaning part connected in series according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Throughout the specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

FIG. 2 is a configuration diagram of a cleaning system for treating an exhaust gas having a first cleaning part and a second cleaning part connected in series according to an embodiment of the present invention, FIG. 3 is a view showing a first cleaning part connected in series and a second cleaning part FIG. 5 is a block diagram of the cleaning water supply unit shown in FIG. 3, and FIG. 6 is a schematic view of the cleaning water supply unit shown in FIG. FIG. 7 is a block diagram of the second supply pipe according to FIG. 5, FIG. 8 is a block diagram of the neutralizer supply pipe according to FIG. 5, and FIG. 9 is a block diagram of the exhaust gas supply pipe according to FIG. 10 is a block diagram of the cleaning unit according to FIG. 10, FIG. 12 is a block diagram of the cyclone inlet tube according to FIG. 11, and FIG. 13 is a cross- 11 is a block diagram of the first sludge tank connecting pipe according to Fig. 11, Fig. 14 is a cross- 11 is a block diagram of the first buffer tank connection pipe according to FIG. 11, FIG. 16 is a block diagram of the filter solution outflow pipe according to FIG. 11, and FIG. 17 is a cross- Fig. 18 is a block diagram of the filtrate discharge pipe according to Fig. 11. Fig.

Referring to FIGS. 2 and 3, a cleaning system for exhaust gas treatment having a first washing unit and a second washing unit connected in series according to an embodiment of the present invention will be described in detail. A cleaning water supply part 1 for supplying cleaning water to the scrubber 3 for removing sulfur oxides SO _x and the like, an exhaust gas supply part 2 for introducing the exhaust gas into the scrubber 3, A scrubber 3 for removing sulfur oxides and the like from the exhaust gas through adsorption to the scrubbing water, a scrubbing unit 4 for scrubbing the contaminated scrubbing water supplied from the scrubber 3, A washing water discharge pipe 5 for discharging the washing water to the outside of the ship, a washing water supply pipe 6 for supplying the washed washing water to the washing water supplying unit 1 again, and a control unit 7 for controlling the entire system The cleaning unit (4) can be automatically cleaned The filter 453 can be applied to a long time operation and installation investment cost in a closed mode and a hybrid system in which a hydrocyclone 443 and a filter 453 are connected in series can be constructed, When the system is operated in the closed mode, washing water separated from the sludge having a large particle size is introduced into the filter 453 through the hydrocyclone 443, so that the back pressure rise of the filter 453 The cleaning cycle is long and the automatic cleaning cycle becomes long. Therefore, the filter 453 is prevented from being overloaded, thereby enabling long-term operation in a closed mode. In the embodiment of the present invention, the closed mode is a mode in which the inflowing washing water flows into the closed path of the system without a separate inflow of washing water for a certain period of time after the inflow of washing water from the first sea water supply pipe 11 And the open mode is a mode in which the fresh water is continuously introduced from the first sea water supply pipe 11 and the washing water which has been cleaned by the cleaning unit 4 is continuously supplied to the scrubber 3, Means a mode in which water is continuously discharged from the ship.

4 and 5, the rinse water supply unit 1 is configured to supply rinse water to the scrubber 3, which will be described later, in order to remove sulfur oxides contained in the exhaust gas discharged from the ship. To this end, The first scrubbing water supply pipe 12, the neutralization liquid supply unit 13, the heat exchange line 14, the bypass line 15, the second scrubbing water supply pipe 16, (17).

The first seawater supply pipe 11 may include a first seawater supply valve 111 for introducing seawater into the ship.

The first seawater supply valve 111 is installed on one side of the first seawater supply pipe 11 and operates under the control of the control unit 7 to determine whether seawater is introduced or not. Therefore, when the system operates in the closed mode, the first seawater supply valve 111 is closed after a predetermined amount of seawater is introduced through the first seawater supply pipe 11, and when operating in the open mode, The supply valve 111 can be opened to continuously inflow the seawater.

The first cleansing water supply pipe (12) is connected to the distal end of the first seawater supply pipe (11) to transport the cleansing water. The first cleaning water supply pipe 12 is not limited in configuration, but may be formed of, for example, a first supply pipe 121 and a second supply pipe 123, that is, two pipes.

4 to 6, the first supply pipe 121 is configured to transport the washing water, and has a first supply valve 121a at one side and a first supply pump 121b at the other side. Therefore, when the first supply valve 121a is opened under the control of the control unit 7 to be described later, the washing water flowing into the first supply pipe 121 can be transported by the first supply pump 121b.

4 to 5 and 7, the second supply pipe 123 is configured to transport the washing water, and includes a second supply valve 123a on one side and a second supply pump 123b on the other side Respectively. Therefore, if the second supply valve 123a is opened under the control of the control unit 7, the washing water flowing into the second supply pipe 123 can be transported by the second supply pump 123b. In addition, when the system operates in the open mode, the flow rate of the washing water transported along the system is relatively large, so that both the first supply valve 121a and the second supply valve 123a are opened, The washing water can be transported through the second supply pipes 121 and 123 and only the first supply valve 121a is opened when operating in the closed mode so that the washing water is transported only through the first supply pipe 121 .

4 and 5, the neutralizing agent supply unit 13 is configured to neutralize the washing water supplied from the buffer tank 42, which will be described later, when the system operates in the closed mode, (131), and a neutralizing agent supply pipe (133).

The neutralizer tank 131 is configured to store a neutralizing agent supplied to the cleansing water for removing the oxidizing agent remaining in the cleansing water supplied from the buffer tank 42 to be described later.

4 to 5 and 8, the neutralizing agent supply pipe 133 is connected to the distal end side of the first washing water supply pipe 12 to supply a neutralizing agent, which is supplied from the neutralizing agent tank 131, (Not shown) to the neutralizer 12 side to neutralize the washing water, and may include a neutralizing agent supply pump 133a.

The neutralizing agent supply pump 133a is formed at one side of the neutralizing agent supply pipe 133 and operates under the control of a control unit 7 to be described later to supply the neutralizing liquid supplied from the neutralizing agent tank 131 to the neutralizing agent supplying pipe 133 via the neutralizing agent supplying pipe 133 The flow rate of the neutralizing agent to be transported can be controlled by controlling the intensity of the output of the neutralizing agent supply pump 133a.

4 and 5, the heat exchanging unit 14 is connected to the end of the first rinse water supply pipe 12 so that when the system operates in the closed mode, the exhaust gas So that the heated washing water is cooled. That is, when the system operates in the open mode, seawater having a constant temperature continuously flows into the ship as the cleansing water. However, when the system operates in the closed mode, the scrubber 3, which will be described later, So that the temperature of the cleaning liquid can be increased by contacting with the exhaust gas. Therefore, the cleaning water is cooled and maintained at a predetermined temperature. The heat exchange unit 14 may include a first heat exchange valve 141, a heat exchanger 143, and a second heat exchange valve 145.

The first heat exchange valve 141 is positioned at the front end side of the heat exchanging unit 14 and is opened and closed under the control of a control unit 7 to be described later to determine whether or not the washing water in the heat exchanging unit 14 flows. For example, when the system operates in the closed mode, the first heat exchange valve 141 may be opened to allow the washing water, which is continuously transported along the closed path, to be transported to the heat exchanging unit 14 side.

The heat exchanger 143 is located at one side of the heat exchanger 14 and is preferably located between the first heat exchanger valve 141 and a second heat exchanger valve 145 to be described later and connected to the heat exchanger 14 side Exchanges heat between the washed water and the cooled sea water to cool the washing water. As described above, when the system operates in the closed mode, the cleaning liquid, which is repeatedly supplied to the scrubber 3 to be described later along the closed path, is continuously heated and in contact with the exhaust gas, The temperature of the washing water can be maintained at a certain level by cooling the washing water.

The second heat exchange valve 145 is located at a distal end of the heat exchanging part 14 and is opened and closed under the control of a control part 7 to be described later and is transmitted through a second washing water supply pipe 16, It is prevented from flowing back to the heat exchanging part (14) side. Therefore, it is preferable to close the second heat exchange valve 145 when the system operates in the open mode and open the second heat exchange valve 145 when operating in the closed mode.

The bypass unit 15 is connected to the end of the first washing water supply pipe 12 so that the washing water can be transported while bypassing the heat exchange unit 14 when the system operates in the open mode . For example, when the system is in the open mode, the first heat exchange valve 141 is closed, and the transportation of the washing water to the heat exchange unit 14 is interrupted. Through the bypass unit 15, And can be transported to the cleaning water supply pipe 16 side. For this purpose, the bypass unit 15 may include a bypass valve 151.

The bypass valve 151 is provided at one side of the bypass unit 15 and is opened and closed under the control of a control unit 7 to be described later and is sent through the first wash water supply pipe 12, So that it can be transported to the part 15 side. For example, when the system operates in the open mode, the bypass valve 151 is opened to allow the washing water to flow in. When the system operates in the closed mode, the bypass valve 151 is closed, So that the inflow can be blocked.

The second cleansing water supply pipe 16 is connected to the ends of the heat exchanging unit 14 and the bypass unit 15 so that the washing water can be transported.

One end of the first scrubber connection pipe 17 is connected to the end of the second cleaning water supply pipe 16 and the other end thereof is connected to a nozzle of a scrubber 3 to be described later to supply cleaning water to the scrubber 3 The number of the nozzles is not limited and is the same as the number of the nozzles in the scrubber 3. [

2 and 3, the exhaust gas supply unit 2 is configured to introduce the exhaust gas generated in the ship into a scrubber 3 to be described later, and may include an exhaust gas supply pipe 21 for this purpose .

One end of the exhaust gas supply pipe 21 is connected to a large diesel engine such as a main engine of a ship or an auxiliary engine so that an exhaust gas containing sulfur oxides is introduced into a scrubber 3 to be described later. Valve 211 may be included.

The exhaust gas supply valve 211 is provided on one side of the exhaust gas supply pipe 21 and is opened and closed by a control unit 7 to be described later to determine whether the exhaust gas flows into the scrubber 3 to be described later.

The scrubber 3 is configured to remove sulfur oxides contained in the exhaust gas by adsorbing the scrubbing water supplied to the scrubber 3.

3 and 10 to 11, the cleaning unit 4 is configured to filter sludge from the contaminated cleaning water supplied from the scrubber 3. For this purpose, a second scrubber connection pipe 41, A buffer tank 42, a second seawater supply pipe 43, a first washing unit 44, a first washing unit 45, a sludge storage unit 46, and a filtrate storage unit 47 have.

The second scrubber connection pipe (41) is connected to the scrubber (3) at one end so that the contaminated washing water can be transported.

The buffer tank (circulation tank) 42 is connected to the second scrubber connection pipe 41 to temporarily store the polluted and / or washed cleansing water.

The second seawater supply pipe 43 is connected to the buffer tank 42 to introduce seawater into the buffer tank 42. For example, when the system is operated in the closed mode, even if the cleaning water contaminated by the first and second cleaning portions 44 and 45 to be described later is cleaned in real time, sulfur oxide is contained in the scrubber 3 The turbidity of the washing water flowing along the closed path is inevitably increased with time as one exhaust gas flows continuously. Therefore, a certain level of seawater is supplied into the buffer tank 42 to prevent the washing water turbidity from rapidly increasing. For this purpose, the second seawater supply pipe 43 may include a seawater supply pump 431.

The seawater supply pump 431 is installed at one side of the second seawater supply pipe 43 and operates under the control of a control unit 7 to be described later so that the seawater transported by the second seawater supply pipe 43 is discharged to the buffer tank So that the flow rate of the seawater to be transported can be controlled by controlling the intensity of the output.

The sludge washing section 44 is configured to filter the sludge from the washing water using a centrifugal force. The sludge washing section 44 includes a cyclone inlet pipe 441, a hydrocyclone 443, a first sludge tank connecting pipe 445 And a first buffer tank connection pipe 447,

10 to 12, the cyclone inflow pipe 441 is configured to transport the contaminated cleaning water stored in the buffer tank 42 to the hydrocyclone 443 to be described later, And a clone inflow pump 441a.

The cyclone inflow pump 441a is installed at one side of the cyclone inflow pipe 441 and operates under the control of the control unit 7 to supply the washing water supplied from the buffer tank 42 to the cyclone inflow pipe 441 to control the intensity of the output of the cyclone inflow pump 441a to control the flow rate of the washing water to be transported.

Referring to FIGS. 10 and 11, the hydrocyclone 443 separates the sludge from the washing water using a centrifugal force generated by the swirling flow of the fluid. As described in detail below, when the system operates in the open mode, the turbidity of the contaminated washing water is maintained at a constant level by continuously supplying the seawater through the first sea water supply pipe 11, The hydrocyclone 443 alone can be operated to perform the cleaning operation. However, when the system operates in the closed mode, the seawater is not continuously supplied through the first seawater supply pipe 11, and the washing water circulating through the closed path by the exhaust gas continuously flowing into the scrubber 3 The turbidity increases continuously with time, so that the hydrocyclone 443 and the filter 453 are operated at the same time. In this manner, the system can be operated in both the open mode and the closed mode. In addition, when the system is operated in the closed mode, the sludge having large particles is primarily separated from the contaminated washing water through the hydrocyclone 443, so that the cycle of back pressure rise of the filter 453 becomes long, The filter 453 is prevented from being overloaded so that the system can be operated for a long time in the closed mode.

10 to 11 and 13, the first sludge tank connecting pipe 445 transports the sludge filtered from the washing water contaminated by the hydrocyclone 443 to a sludge tank 461 to be described later May comprise a sludge tank connection valve 445a.

The sludge tank connection valve 445a is installed at one side of the second sludge tank connection pipe 445 and is opened and closed under the control of the control unit 7 to connect the sludge tank 461 of the sludge filtered from the hydrocyclone 443 ) To determine whether or not to flow.

10 to 11 and 14, the first buffer tank connecting pipe 447 is configured to redirect the washing water washed by the hydrocyclone 443 to the buffer tank 42, And may include a first buffer tank shutoff valve 447a for this purpose.

The first buffer tank shutoff valve 447a is installed at one side of the first buffer tank connection pipe 445 and is opened and closed under the control of the control unit 7 and is firstly cleaned by the hydrocyclone 443 The cleansing water is prevented from being re-transported to the first buffer tank 42. For example, when the system is operated in the open mode, the shutoff valve 447a is opened. When the system operates in the closed mode, the shutoff valve 447a is closed for the secondary cleaning of the filter 453, To the filter 453 side.

The second washing unit 45 is connected to the first washing unit 44 in series to perform secondary washing through the first washing unit 44 through the first washing unit 44, A filter 453, a filter liquid outlet pipe 455, and a first sludge tank connection pipe 457. The filter liquid inlet pipe 451, the filter 453, the filter liquid outlet pipe 455, and the first sludge tank connection pipe 457 are connected to each other.

10 to 11 and 15, the filter liquid inflow pipe 451 is connected to one side of the first buffer tank connection pipe 447, and is preferably connected to the first buffer tank connection pipe 447 The cleaning water connected to the hydrocyclone 443 and the first buffer tank shutoff valve 447a and primarily washed by the hydrocyclone 443 is transported to the filter 453 to be described later, To this end, a filter inlet valve 451a may be included.

The filter inlet valve 451a is installed on one side of the filter liquid inlet pipe 451 and is opened and closed under the control of the control unit 7 so that the cleaning water from the primary cleaning unit 44 to the filter 453 Or whether or not the transportation is performed. When the system operates in the open mode, seawater having low turbidity is continuously supplied through the first sea water supply pipe 11, so that there is no need to perform additional cleaning by the filter 453. Therefore, the filter inlet valve 451a is closed to shut off the washing water, which has been firstly washed by the hydrocyclone 443, into the filter 453. However, when the system operates in the closed mode, since the seawater is not continuously supplied through the first seawater supply pipe 11, the turbidity of the cleaning liquid circulating through the closed path gradually increases, so that the filter inlet valve 451a is opened It is preferable to induce the transport of the washing water primarily washed by the first washing section 44 to the filter 453 and to perform the second washing by the filter 453. [

The filter 453 is configured to automatically clean the contaminated washing water flowing into the inside of the filter 453 to filter the sludge from the washing water. While the flow rate of the washing water circulating through the conventional low-capacity centrifugal separator is generally less than 2% of the flow rate circulating between the scrubber 3 and the buffer tank 42 at 0.15 to 0.5 m ³ / MWh, The flow rate of the washing water circulating through the filter 453 is generally 10 m ³ / MWh. Therefore, when the system is operated in the closed mode, the increase rate of the turbidity of the washing water circulating through the system is relatively lower than when the centrifuge is used, so that the operating time of the closing mode can be remarkably increased. Therefore, the flow rate of the washing water circulating through the filter 453 is preferably 0.5 m ³ / MWh to 10 m ³ / MWh. In addition, since the centrifugal separator has a small processing capacity as described above, a plurality of centrifuges must be connected in parallel for long-term close mode operation of the system, so that installation space of the centrifugal separator increases and investment cost increases. In contrast, the present invention does not require an additional space for installation of the plurality of filters 453 by applying the high-capacity single filter 453, and may reduce the investment cost for the washing water treatment system. In addition, when the system is operated in the closed mode, sludge having a large particle size is primarily filtered from the washing water through the hydrocyclone 443, so that the back pressure rise period of the filter 453 becomes long, There is an advantage that long-term operation can be performed in the closed mode by preventing the overload of the first switch 453.

10 to 11 and 16, the filter liquid outlet pipe 455 is configured such that the washing water secondarily washed by the filter 453 is transported. To this end, the second buffer tank connecting pipe 455a, And a holding tank connection pipe 455b.

The second buffer tank connecting pipe 455a is connected to the filter 453 to return the washing water secondarily washed by the filter 453 to the buffer tank 42. A buffer tank inflow valve 455a-1 is installed at one side of the first buffer tank connection pipe 445a. Accordingly, when the system operates in the open mode, the second buffer tank connection pipe 455a is closed, and when the system operates in the closed mode, the second buffer tank connection pipe 455a is opened.

The holding tank connecting pipe 455b is configured to transport the washing water, which has been secondarily washed by the filter 453, to the holding tank 471 to be described later. A holding tank inflow valve 455b-1 is installed at one side of the holding tank connection pipe 455b. Therefore, the washing water, which has been secondly cleaned by the filter 453, can be transported to the holding tank 471 by opening and closing the holding tank inflow valve 455b-1.

The second sludge tank connecting pipe 457 is configured to transport the sludge filtered from the washing water contaminated by the filter 453 to a sludge tank 461 to be described later.

The sludge storage part 46 stores the sludge filtered from the filter 443 and / or the hydrocyclone 453 and re-transports the amount of water contained in the sludge to the buffer tank 42. To this end, And may include a sludge tank 461 and a feed water supply pipe 463.

The sludge tank 461 is configured to store sludge separated through the filter 443 and / or the cyclone 453.

10 to 11 and 17, the water-based material supply pipe 463 is connected to the sludge tank 461 so that water contained in the sludge can be re-transported to the buffer tank 42 to be. Specifically, when the moisture content of the sludge accumulated in the sludge tank 461 is equal to or higher than a predetermined level, the sludge is sedimented, so the overflow amount of the sludge is re-transported to the buffer tank 42 and the sludge accumulated in the sludge tank 461 The installation space and cost increase due to the increase in the capacity of the sludge tank 461 can be prevented. For this purpose, the feed water supply pipe 463 may include a re-supply pump 463a.

The re-supply pump 463a is installed at one side of the water-based material supply pipe 463 and operates under the control of the control unit 7 to supply the amount of water separated from the sludge accumulated in the sludge tank 461 to the water- 463 to the buffer tank 42. The flow rate of the transported feedwater can be controlled by controlling the intensity of the output of the re-feed pump 463a.

The filtrate storage unit 47 is configured to prevent an overload of the system by storing a predetermined amount of washing water secondarily washed by the filter while the system is operated in the closed mode. As described above, even when the system operates in the closed mode, a certain level of seawater is introduced through the second seawater supply pipe 43, and the amount of the washing water circulated through the system gradually increases, The capacity of the washing water which can be stored in the tank 42 is limited. Thus, the system can store a certain amount of washing water circulating along the closed path during the closed mode operation of the system through a separate filtrate reservoir 47, and can exit the vessel when the closing mode is completed. For this purpose, the filtrate reservoir 47 may include a holding tank 471 and a filtrate discharge pipe 473.

The holding tank 471 stores a predetermined amount of the second washing water sent through the holding tank connecting pipe 455b to prevent the amount of the washing water circulating along the closing path from rapidly increasing, So that stability can be achieved.

10 to 11 and 18, the filtrate discharge pipe 473 is configured to discharge the washing water stored in the holding tank 471 to the outside of the ship after the closing mode of the system is completed, For this purpose, a filtrate discharge valve 473a may be included.

The filtrate discharge valve 473a is installed at one side of the filtrate discharge pipe 473 and is opened and closed under the control of the control unit 7 to discharge the washing water from the holding tank 471 toward the washing water discharge pipe 5 It is a configuration to decide whether to transport. Accordingly, the filtrate discharge valve 473a is kept closed when the system is operated in the closed mode, and the system is opened at the end of the closed mode, so that the washing water stored in the holding tank 471 is discharged to the outside of the vessel .

2 and 3, the washing water discharge pipe 5 is connected to the buffer tank 42 and / or the filtrate discharge pipe 473 so that the washed washing water can be discharged to the marine environment And may include a washing water discharge valve 51 for this purpose.

The washing water discharge valve 51 is installed at one side of the washing water discharge pipe 5 and is opened and closed under the control of the control unit 7 to discharge the washing water from the buffer tank 42 to the washing water discharge pipe 5 side It is a configuration to decide whether to transport. Therefore, when the system is operated in the closed mode, the discharge valve 51 maintains the closed state and remains open when operating in the open mode.

One end of the washing water supply pipe 6 is connected to the buffer tank 42 and the other end is connected to the first sea water supply pipe 11 to connect the washing water stored in the buffer tank 42 to the first sea water supply pipe 11 ). Therefore, when the system operates in the closed mode, the washing water in the buffer tank 42 can be supplied to the first sea water supply pipe 11 so that the washing water can be circulated continuously along the closed path. For this, the cleaning water supply pipe 6 may include a cleaning water supply valve 61.

The washing water supply valve 61 is provided at one side of the washing water supply pipe 6 and is opened and closed under the control of the control unit 7 to perform washing from the buffer tank 42 to the first sea water supply pipe 11 And determines whether or not water is transported. Accordingly, when the system operates in the closed mode, the wash water supply valve 61 maintains the open state, and when the system operates in the open mode, the wash water supply valve 61 maintains the closed state.

The control unit (7) is configured to control the system as a whole, and can control the opening and closing of individual pumps and valves.

Hereinafter, the case where the system operates in the closed mode and the case in which the system operates in the open mode will be described. When the cleaning system for exhaust gas treatment having the first washing part and the second washing part connected in series according to the present invention is operated in the closed mode, the first sea water supply valve 111 is first opened and the first sea water supply pipe 11 And the first seawater supply valve 111 is closed after a predetermined level of seawater has flowed into the ship. Then, the first supply valve 121a is opened, and the washing water flowing into the first supply pipe 121 is transported by the first supply pump 121b. The transported washing water is transported to the side of the first heat exchanger 14 where the first heat exchange valve 141 is opened and is supplied to the scrubber (not shown) through the second scrubber connection pipe 16 and the first scrubber connection pipe 17 3). The sulfur oxide contained in the exhaust gas flowing into the scrubber 3 from the scrubber 3 is removed through adsorption with the washing water. Then, the contaminated washing water is temporarily stored in the buffer tank 42 through the washing water discharge pipe 36 and the second scrubber connecting pipe 41. In addition, seawater from the second seawater supply pipe (43) flows into the buffer tank (42).

The washing water stored in the buffer tank 42 is transported to the cyclone inlet pipe 441 side. The transported washing water is primarily washed by the hydrocyclone 443 to remove large contaminants from the washing water. The washing water washed by the hydrocyclone 443 is transported to the filter liquid inflow pipe 451 side where the filter inflow valve 451a is opened. Therefore, the first washed water is secondarily washed by the filter 453. The sludge filtered by the filter 453 is then transported to the sludge tank 461 and the second cleaned wash water flows through the second buffer tank shutoff valve 455a-1 and the holding tank inflow valve 455b-1 Is transported through the opened second buffer tank inflow pipe 455a and the holding tank connection pipe 455b and is stored in the buffer tank 42 and the holding tank 471. [ In addition, the moisture contained in the sludge is accumulated in the sludge tank 461 and re-transported to the buffer tank 42 through the water supplying material pipe 463. The washing water stored in the buffer tank 42 is supplied again to the washing water supply pipe 6 in which the washing water feed valve 61 is opened and is again transported through the first sea water supply pipe 11, do. When the closed mode operation of the system is terminated, the filtrate discharge valve 473a and the wash water discharge valve 51 are opened, and the wash water that has been washed through the wash water discharge pipe 5 is discharged to the outside of the vessel.

 The first seawater supply valve 111 is opened and the first seawater supply pipe 11 is opened when the cleaning system for treating the exhaust gas having the first washing part and the second washing part connected in series according to the present invention operates in the open mode, And the first seawater supply valve 111 is maintained in an open state. Since the flow rate of the washing water flowing through the system is relatively large, the first supply valve 121a and the second supply valve 123a are opened at the same time and the first and second supply pipes 121 and 123 The introduced washing water is transported by the first and second supply pumps 121b and 123b. The transported washing water flows along the bypass unit 15 in which the bypass valve 151 is opened and is temporarily stored in the buffer tank 42 through the same path as the closing mode. In the open mode, since the turbidity of the washing water discharged to the outside of the ship by the continuous inflow of the seawater through the first seawater supply valve 111 is maintained at a constant level, the filter inlet valve 451a is closed and the filter 453). Therefore, only the cleaning with the hydrocyclone 443 proceeds, the washed washing water is stored in the buffer tank 42, and the sludge is stored in the sludge tank 461. Since the filtrate discharge valve 473a is opened in the open mode, the washing water stored in the buffer tank 42 is continuously discharged to the outside of the vessel through the filtrate discharge pipe 473. [ Further, the washing water feed valve 61 remains closed, so that the washed washing water does not circulate through the system.

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

1: Cleaning water supply part
11: First sea water supply pipe
111: First seawater supply valve
12: First rinse water supply pipe
121: first supply pipe
121a: first supply valve 121b: first supply pump
123: second supply pipe
123a: second supply valve 123b: second supply pump
13:
131: Neutralizer tank
133: neutralizing agent supply pipe 133a: neutralizing agent supplying pump
14: Heat exchanger
141: first heat exchange valve 143: heat exchanger 145: second heat exchange valve
15: Bypass section
151: Bypass valve
16: Second washing water supply pipe
17: First scrubber connection pipe
2: Exhaust gas supply part
21: Exhaust gas supply pipe
211: Exhaust gas supply valve
3: Scrubber
31: Housing
33: cooling section 331: nozzle 333: cooler
34: water distributor 35: exhaust gas discharge pipe 36: rinse water discharge pipe
4: Cleaning unit
41: second scrubber connection pipe 42: buffer tank
43: Second seawater supply pipe
431: Seawater supply pump
44:
441: Cyclone inlet pipe 441a: Cyclone inlet pump
443: Hydrocyclone
445: First sludge tank connection pipe 445a: Sludge tank connection valve
447: first buffer tank connection pipe 447a: first buffer tank shutoff valve
45:
451: Filter liquid inflow pipe 451a: Filter inflow valve
453: Filter
455: Filter liquid outlet pipe
455a: second buffer tank inflow pipe 455b: holding tank connection pipe
457: Second sludge tank connection pipe
46: sludge storage part
461: Sludge tank
463: water bonsai supply pipe 463a: re-supply pump
47: filtrate storage part
471: holding tank
473: Filtrate discharge pipe 473a: Filtrate discharge valve
5: Cleaning water discharge pipe
51: rinse water discharge valve
6: Washing water supply pipe
61: wash water supply valve
7:

Claims (17)

A cleaning water supply portion for supplying cleaning water to the scrubber for removing sulfur oxides in the exhaust gas of the ship, an exhaust gas supply portion for introducing the exhaust gas into the scrubber, and a filter for removing sulfur oxides from the exhaust gas through adsorption between the supplied cleaning water A scrubber, and a cleaning unit for cleaning the contaminated cleaning water supplied from the scrubber,
The cleaning unit includes a first cleaning unit for firstly cleaning the sludge from the washing water, a second cleaning unit connected in series with the first cleaning unit to perform second cleaning of the cleaning water that has been firstly cleaned through filtering, And a buffer tank for receiving and temporarily storing contaminated washing water,
The first cleaning unit may include a hydrocyclone for first cleaning the contaminated cleaning water in the buffer tank and a first buffer tank shutoff valve for determining whether the cleaning water having only the first cleaning is reintroduced into the buffer tank ,
Wherein the second washing section includes a filter for performing a second washing operation of the first washing water by automatic washing and a filter inlet valve for determining whether the washing water is firstly washed to the filter side A cleaning system for treating an exhaust gas having a first cleaning portion and a second cleaning portion. The method according to claim 1,
Wherein the cleaning unit further comprises a second scrubber connection pipe connected to the scrubber for transporting the contaminated cleaning water in contact with the exhaust gas, wherein the first scrubber and the second scrubber are connected in series, Cleaning system for exhaust gas treatment. 3. The method of claim 2,
The first washing unit may include a cyclone inlet pipe connected to the buffer tank for transferring contaminated washing water to the hydrocyclone side, a washing water preliminarily washed by the hydrocyclone provided with the first buffer tank shutoff valve, And a first buffer tank connection pipe for re-transporting the buffer tank,
Wherein the second cleaning unit includes a filter liquid inlet pipe connected to the first buffer tank connection pipe at one side thereof and having the filter inlet valve installed therein. Treatment system. The method of claim 3,
Wherein the flow rate of the washing water circulating through the filter is 0.5 m ³ / MWh to 10 m ³ / MWh. delete The method of claim 3,
The first buffer tank shutoff valve is opened when the system is operated in the open mode in which new washing water continuously flows from seawater and the washing water cleaned by the washing unit is continuously discharged to the outside of the vessel, The washing water flowing into the washing machine without being influenced by the washing water is closed when the washing machine is operated in the closed mode in which the wash water is repeatedly supplied along the path of the system,
Wherein the filter inlet valve is closed when the system is operated in the open mode and is opened when operated in the closed mode. The method according to claim 3 or 6,
Characterized in that the cleaning unit further comprises a sludge reservoir for storing sludge filtered from the filter and / or hydrocyclone, for trapping moisture contained in the sludge and re-transporting it to the buffer tank And a second cleaning section. 8. The method of claim 7,
The sludge storage unit includes a sludge tank for storing the sludge filtered from the filter and / or the hydrocyclone, a sludge tank for re-transporting the sludge accumulated in the sludge tank to an overflow amount when the water content is above a certain level, Wherein the cleaning unit includes a first cleaning unit and a second cleaning unit connected in series. The method according to claim 6,
The cleaning water supply unit includes a first seawater supply pipe for introducing seawater into the ship, a first cleaning water supply pipe connected to an end of the first sea water supply pipe to transport the cleaning water, And a heat exchanger for cooling the circulating water circulating along the path when the system is operated in the closed mode. The system of claim 1, wherein the first washing unit and the second washing unit are connected in series. delete 10. The method of claim 9,
Wherein the heat exchange unit includes a first heat exchange valve provided at a distal end side of the heat exchange unit to determine whether or not the washing water in the heat exchange unit flows into the first heat exchange unit and a second heat exchange valve provided at a distal end of the heat exchange unit, And a heat exchanger installed between the two heat exchanging valves for cooling the washing water transported through the heat exchanging unit with the cooled seawater to cool by cooling the exhaust gas. Cleaning system. 12. The method of claim 11,
Wherein when the system is operated in the closed mode, the first heat exchange valve and the second heat exchange valve are opened to cool the washing water circulating the path, wherein the first washing unit and the second washing unit are connected in series, Cleaning system for exhaust gas treatment. 13. The method of claim 12,
The washing water supply unit further includes a bypass unit connected to the first washing water pipe end so that the washing water bypasses the heat exchange unit when the system operates in the open mode,
Wherein the bypass portion includes a bypass valve installed at one side of the bypass portion and allowing the washing water transported through the first washing water supply pipe to be transported to the bypass portion. And a second cleaning portion. 14. The method of claim 13,
Characterized in that the bypass valve is opened when the system is operated in the open mode and the bypass valve is closed when the system is operated in the closed mode. Cleaning system. The method according to claim 6,
Wherein the cleaning unit further comprises a second seawater supply pipe connected to the buffer tank for introducing seawater into the buffer tank to prevent a rapid increase in the turbidity of the washing water circulating along the path, 1. A cleaning system for treating an exhaust gas having a first cleaning portion and a second cleaning portion. 16. The method of claim 15,
Wherein the cleaning unit further comprises a filtrate reservoir for storing an amount of rinse water cleaned by the filter when the system is operated in the closed mode to prevent overloading of the system,
The filtering liquid storage unit includes a holding tank for storing a predetermined amount of washing water that is secondly cleaned by the filter, and a washing tank connected to the holding tank for discharging the washing water stored in the holding tank after the shut- And a filtrate discharging pipe
The second washing unit may further include a filter liquid outlet pipe through which the washing water secondly washed by the filter is transported,
The filter liquid outlet pipe includes a second buffer tank inflow pipe connected to the filter to transport the washed water to the buffer tank, Wherein the first cleaning portion and the second cleaning portion are connected in series. 10. The method of claim 9,
Wherein the first cleaning water supply pipe includes a first supply pipe and a second supply pipe for transporting the washing water,
Wherein the first supply pipe is provided with a first supply valve and a first supply pump and the second supply pipe is provided with a second supply valve and a second supply pump at one side thereof, Wherein the first supply valve and the second supply valve are both opened when the first supply valve and the second supply valve are operated in the closed mode and only the first supply valve is opened when the first supply valve and the second supply valve are operated in the closed mode. .

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