KR20220048720A - Exhaust gas treatment apparatus for ship - Google Patents

Abstract

Disclosed is an exhaust gas processing apparatus for a ship. An exhaust gas processing apparatus for a ship according to an embodiment of the present invention comprises: a first processing unit removing black carbon together with particulate matter from an exhaust gas discharged from an exhaust gas discharge device provided in the ship; and a second processing unit removing at least one of nitrogen oxide and sulfur oxide from the exhaust gas from which the particulate matter and the black carbon are removed by the first processing unit. The first processing unit includes a filter filtering and removing the particulate matter from the exhaust gas. The filter includes an oxidation catalyst for oxidizing the black carbon. The black carbon oxidized by the oxidation catalyst can be filtered by the filter to be removed from the exhaust gas. The present invention can be easily installed in a ship with many spatial restrictions.

Description

Ship's exhaust gas treatment system {EXHAUST GAS TREATMENT APPARATUS FOR SHIP}

The present invention relates to an exhaust gas treatment apparatus for a ship.

As regulations on exhaust gas emitted from ships are increasingly tightened, ships are equipped with an exhaust gas treatment device for treating exhaust gas.

In an exhaust gas treatment device provided on a ship, nitrogen oxides or sulfur oxides are removed from the exhaust gas.

On the other hand, black carbon generated when fuel is incompletely burned has a warming potential 900 times higher than carbon dioxide, a representative greenhouse gas, so it will be included in emission control gas in the future.

Therefore, the need to remove the black carbon contained in the exhaust gas generated from the ship has emerged.

In addition, since a ship has many space restrictions, it is necessary to reduce the size of the exhaust gas treatment device.

The present invention has been made in recognition of at least one of the needs or problems occurring in the prior art as described above.

One aspect of the object of the present invention is to remove black carbon contained in exhaust gas generated from a ship.

Another aspect of the present invention is to make the size of the exhaust gas treatment device capable of removing black carbon contained in exhaust gas small, so that it is easy to install on a ship having many space restrictions.

The exhaust gas treatment apparatus of a ship related to an embodiment for realizing at least one of the above problems may include the following features.

An exhaust gas processing apparatus for a ship according to an embodiment of the present invention includes: a first processing unit for removing black carbon together with particulate matter from exhaust gas discharged from an exhaust gas exhaust device provided on the ship; and a second processing unit configured to remove at least one of nitrogen oxides and sulfur oxides from the exhaust gas from which particulate matter and black carbon have been removed in the first processing unit. wherein the first processing unit includes a filter that filters and removes particulate matter from the exhaust gas, the filter includes an oxidation catalyst for oxidizing black carbon, and the black carbon oxidized by the oxidation catalyst is It can be filtered out in a filter and removed from the exhaust gas.

In this case, the oxidation catalyst may be a ceria-based catalyst or an oxide-based catalyst.

In addition, the ceria-based catalyst is Pt/CeO ₂ , Ni/CeO ₂ , Cu/CeO ₂ and, Including any one or more of Cu/CeO ₂ , wherein the oxide-based catalyst includes any one or more of Co ₃ O ₄ , CuO, CuO-Co ₃ O ₄ , CuO-MnO ₂ and, Co ₃ O ₄ -MnO ₂ can do.

In addition, a plurality of flow paths through which the exhaust gas flows are formed in the filter, and when one side of one of the flow paths is opened and the other side is closed, one side of the flow path and the neighboring flow path is closed and the other side is opened can be

In addition, an oxidation catalyst coating layer coated with the oxidation catalyst may be formed on an inner surface of the flow path through which one side is opened and exhaust gas is introduced through the open side.

In addition, the second processing unit may include a nitrogen oxide remover for removing nitrogen oxides from the exhaust gas by reducing nitrogen oxides to nitrogen using a reducing agent and a reduction catalyst.

In addition, it may further include a control unit for controlling the first and second processing units.

In addition, when the vessel operates in an Emission Control Area (ECA), the control unit may include particulate matter, black carbon, nitrogen oxides, and Sulfur oxides can be removed.

In addition, the control unit may allow the exhaust gas to bypass the first processing unit and the nitrogen oxide eliminator when the ship operates in an area other than the emission control area.

In addition, when regeneration of the first processing unit or the nitrogen oxide remover is required, the control unit causes the exhaust gas to circulate between the first processing unit or the nitrogen oxide remover and a burner that heats the exhaust gas to circulate the first The temperature of the processing unit or the nitrogen oxide remover may be set to be higher than or equal to a predetermined regeneration temperature.

As described above, according to an embodiment of the present invention, it is possible to remove black carbon contained in exhaust gas generated from a ship.

In addition, according to an embodiment of the present invention, the size of the exhaust gas processing apparatus capable of removing black carbon contained in exhaust gas is also reduced, so that it can be easily installed in a ship having many space restrictions.

1 is a view showing an embodiment of an exhaust gas treatment apparatus for a ship according to the present invention.
2 is a view showing a filter of a first treatment unit of an embodiment of the exhaust gas treatment apparatus for a ship according to the present invention.
3 to 5 are views showing the operation of an embodiment of the exhaust gas treatment apparatus for a ship according to the present invention.

In order to help the understanding of the features of the present invention as described above, the exhaust gas treatment apparatus of a ship related to an embodiment of the present invention will be described in more detail below.

The embodiments described below will be described based on the most suitable embodiments for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the described embodiments, but Examples are to illustrate that the present invention can be implemented. Accordingly, the present invention is capable of various modifications within the technical scope of the present invention through the embodiments described below, and these modified embodiments will fall within the technical scope of the present invention. In addition, in the reference numerals in the accompanying drawings to help the understanding of the embodiments to be described below, related components among components that perform the same operation in each embodiment are indicated by the same or extended numbers.

Hereinafter, an embodiment of an exhaust gas treatment apparatus for a ship according to the present invention will be described with reference to FIGS. 1 to 5 .

An embodiment of the exhaust gas treatment apparatus 100 for a ship according to the present invention may include a first processing unit 200 and a second processing unit 300 .

The first processing unit 200 may remove black carbon together with particulate matter from exhaust gas provided in a ship (not shown), for example, discharged from an exhaust gas exhaust device (ED) such as an engine.

As shown in FIG. 1 , an exhaust pipe PE may be connected to an exhaust gas exhaust device ED such as an engine provided in a ship. As such, the exhaust pipe PE connected to the exhaust gas exhaust device ED may be connected to the first processing unit 200 .

The first processing unit 200 is a nitrogen oxide remover (to be described later) included in the second processing unit 300, for example, the second processing unit 300 as shown in FIG. 1 by the first exhaust connection pipe PC1. 310) may be connected.

The exhaust pipe PE may be provided with a first flow path switching valve VC1 as shown in FIG. 1 . In addition, one side of the first bypass pipe PB1 may be connected to the first flow path switching valve VC1 , and the other end of the first bypass pipe PB1 may be connected to the first exhaust connection pipe PC1 .

The first flow path switching valve VC1 may be connected to a control unit 400 to be described later. And, when the first flow path switching valve VC1 is switched in the direction of the first processing unit 200 by the control unit 400 , the exhaust gas discharged from the exhaust gas exhaust device ED is discharged from the exhaust pipe as shown in FIG. 3 . (PE) may flow and be introduced into the first processing unit 200 . In addition, when the first flow path switching valve VC1 is switched in the direction of the first bypass pipe PB1 by the controller 400 , the exhaust gas discharged from the exhaust gas exhaust device ED as shown in FIG. 4 is It may flow to the first exhaust connection pipe PC1 through a portion of the exhaust pipe PE and the first bypass pipe PB1 without flowing into the first processing unit 200 .

The exhaust pipe PE may be provided with a first pressure sensor SP1 connected to the control unit 400 as shown in FIG. 1 . Accordingly, the first pressure sensor SP1 may sense the pressure of the exhaust gas flowing through the exhaust pipe PE and transmit it to the controller 400 .

As shown in FIG. 1 , the first processing unit 200 may be connected to the first blower BL1 by a first blower connecting pipe PL1 . The first blower BL1 may be connected to the control unit 400 . Accordingly, as shown in FIG. 3 , when black carbon is removed from the exhaust gas together with particulate matter in the first processing unit 200 , the control unit 400 drives the first blower BL1 to drive the first processing unit By allowing external air to be supplied to the 200, the back pressure can be relieved and the catalytic reaction can be promoted.

The first processing unit 200 may be connected to the first burner BN1 by a first burner connection pipe PN1 as shown in FIG. 1 . The first burner BN1 may be connected to the controller 400 . When regeneration of the first processing unit 200 is required, as shown in FIG. 5 , the control unit 400 drives the first blower BL1 between the first processing unit 200 and the first burner BN1. exhaust gas can be circulated. Then, the control unit 400 drives the first burner BN1 so that the exhaust gas flowing into the first burner BN1 is equal to or higher than a predetermined regeneration temperature, thereby regenerating the temperature of the first processing unit 200 to a predetermined level. By allowing the temperature to be higher than the temperature, the first processing unit 200 can be regenerated.

The first processing unit 200 may include a filter 210 as will be described later. The filter 210 may filter and remove particulate matter included in the exhaust gas, oxidize black carbon included in the exhaust gas including an oxidation catalyst, and filter the oxidized black carbon to remove it from the exhaust gas. When the particulate matter and the oxidized black carbon are collected in the filter 210 by a predetermined reference amount or more, the filtration rate of the particulate matter and the oxidized black carbon of the filter 210 may decrease and the back pressure may increase. In this case, the filter 210 is heated by burning the particulate matter and oxidized black carbon collected in the filter 210 by setting the temperature of the first processing unit 200 to be higher than or equal to the predetermined regeneration temperature as described above. can play

The first processing unit 200 may include a filter 210 . The filter 210 may filter and remove particulate matter from the exhaust gas. To this end, a plurality of flow paths 211 and 211 ′ through which exhaust gas flows may be formed in the filter 210 as shown in FIG. 2 . And, when one side of any one flow path 211 is opened and the other side is closed, one side of the flow path 211 with one side open and the other side closed and the neighboring flow path 211' are closed and the other side is open. can be For example, one side of the flow path 311 and the other side of the flow path 311 ′ may be opened, and the other side of the flow path 311 and one side of the flow path 211 ′ may be closed by the closing member 213 . .

Accordingly, the exhaust gas may be introduced into the flow path 211 through an open side of the flow path 211 as shown in FIG. 2 and flow through the flow path 211 . The exhaust gas flowing through the flow path 211 may pass through a portion of the filter 210 that divides the flow path 211 and the flow path 211 ′ adjacent thereto to be introduced into the neighboring flow path 211 ′. there is. In this way, particulate matter included in the exhaust gas may be removed while the exhaust gas passes through a portion of the filter 210 that partitions the flow path 211 and the flow path 211 ′ adjacent thereto. In addition, as the exhaust gas passes through a portion of the filter 210 dividing the flow passage 211 and the adjacent flow passage 211 ′, black carbon that is included in the exhaust gas and oxidized by an oxidation catalyst to be described later is filtered. can be removed. The exhaust gas introduced into the flow path 211 ′ may be discharged through the other open side of the flow path 211 ′ after flowing through the flow path 211 ′.

The filter 210 includes an oxidation catalyst that oxidizes the black carbon, and the black carbon oxidized by the oxidation catalyst may be filtered in the filter 210 and removed from the exhaust gas. Accordingly, the exhaust gas may be filtered and removed not only particulate matter but also black carbon while passing through the filter 210 .

For example, as shown in FIG. 2 , an oxidation catalyst coating layer 212 coated with an oxidation catalyst may be formed on the inner surface of the flow path 211 in which one side is opened and exhaust gas is introduced through the open side. Accordingly, while the exhaust gas introduced into the flow passage 211 through the open side of the flow passage 211 flows through the flow passage 211 , black carbon contained in the exhaust gas is included in the oxidation catalyst coating layer 212 . It can be oxidized by an oxidation catalyst. The oxidized black carbon may be filtered and removed while the exhaust gas passes through a portion of the filter 210 partitioning the flow passage 211 and the adjacent flow passage 211 ′.

On the other hand, since sulfur oxides contained in the exhaust gas may adhere to the black carbon, when the black carbon contained in the exhaust gas is removed from the filter 210 as described above, the sulfur oxides contained in the exhaust gas are also partially removed from the filter 210 . ) can be removed from

As described above, since the filter 210 for filtering and removing particulate matter includes an oxidation catalyst, it is possible to remove black carbon contained in exhaust gas, so that the exhaust gas treatment apparatus 100 can be made small. Therefore, the exhaust gas treatment apparatus 100 can be easily provided in a ship having many space restrictions.

The oxidation catalyst included in the filter 210 may be a ceria-based catalyst or an oxide-based catalyst that is cerium oxide (CeO ₂ ). Ceria-based catalysts are, for example, Pt/CeO ₂ , Ni/CeO ₂ , Cu/CeO ₂ and, It may include any one or more of Cu/CeO ₂ . In addition, the oxide-based catalyst may include any one or more of Co ₃ O ₄ , CuO, CuO-Co ₃ O ₄ , CuO-MnO ₂ , Co ₃ O ₄ -MnO ₂ .

When a ceria-based catalyst or an oxide-based catalyst is used as an oxidation catalyst, it is economical compared to expensive noble metal-based catalysts, and the oxidation rate of black carbon can be increased, thereby maximizing the reduction rate of black carbon.

However, the oxidation catalyst included in the filter 210 is not particularly limited, and any known catalyst may be used as long as it is included in the filter 210 and can oxidize black carbon included in the exhaust gas.

As shown in FIG. 1 , the first processing unit 200 may include a temperature sensor ST connected to the control unit 400 . Accordingly, the temperature sensor ST may sense the temperature of the first processing unit 200 and transmit it to the controller 400 .

The second processing unit 300 may remove at least one of nitrogen oxides and sulfur oxides from the exhaust gas from which particulate matter and black carbon are removed in the first processing unit 200 .

The second processing unit 300 may include a nitrogen oxide remover 310 . In the nitrogen oxide remover 310, nitrogen oxides can be removed from the exhaust gas by reducing nitrogen oxides to nitrogen using a reducing agent and a reducing catalyst. That is, the nitrogen oxide remover 310 may remove nitrogen oxides from the exhaust gas by selective catalytic reduction (SCR). For example, the nitrogen oxide remover 310 supplies a reducing agent such as ammonia or urea water to the exhaust gas before the exhaust gas flows into the nitrogen oxide remover 310, and the nitrogen oxide remover 310 includes a catalyst with a reduction catalyst attached thereto. A member (not shown) may be included.

The nitrogen oxide remover 310 may be connected to the first processing unit 200 by a first exhaust connection pipe PC1 as shown in FIG. 1 . In addition, the nitrogen oxide remover 310 may be connected to the sulfur oxide remover 320 to be described later by the second exhaust connection pipe PC2 .

A second flow path switching valve VC2 may be provided in the first exhaust connection pipe PC1. For example, as shown in FIG. 1 , the first exhaust connection pipe ( A second flow path switching valve VC2 may be provided in a portion of PC1). In addition, one side of the second bypass pipe PB2 may be connected to the second flow path switching valve VC2 , and the other end of the second bypass pipe PB2 may be connected to the second exhaust connection pipe PC2 .

The second flow path switching valve VC2 may be connected to the control unit 400 . Then, when the second flow path switching valve VC2 is switched to the nitrogen oxide remover 310 by the control unit 400, particulate matter and black carbon are removed from the first processing unit 200 as shown in FIG. The exhaust gas may flow through the first exhaust connection pipe PC1 and may be introduced into the nitrogen oxide remover 310 . In addition, when the second flow path switching valve VC2 is switched in the direction of the second bypass pipe PB2 by the control unit 400 , the first processing is performed through the first bypass pipe PB1 as shown in FIG. 4 . Exhaust gas bypassing the unit 200 does not flow into the nitrogen oxide remover 310, but passes through a part of the first exhaust connection pipe PC1 and the second bypass pipe PB2 to the second exhaust connection pipe PC2 ) can flow.

A second pressure sensor SP2 connected to the control unit 400 may be provided in the first exhaust connection pipe PC1 as shown in FIG. 1 . Accordingly, the second pressure sensor SP2 may sense the pressure of the exhaust gas flowing through the first exhaust connection pipe PC1 and transmit it to the controller 400 .

The nitrogen oxide remover 310 may be connected to the second blower BL2 by the second blower connecting pipe PL2. The second blower BL2 may be connected to the controller 400 . Accordingly, as shown in FIG. 3 , when sulfur oxide is removed from the exhaust gas in the nitrogen oxide remover 310 , the controller 400 drives the second blower BL2 to supply the nitrogen oxide remover 310 with external air. is supplied, it is possible to relieve the back pressure and promote the catalytic reaction.

The nitrogen oxide remover 310 may be connected to the second burner BN2 by a second burner connection pipe PN2 as shown in FIG. 1 . The second burner BN2 may be connected to the controller 400 . When regeneration of the nitrogen oxide eliminator 310 is required, the controller 400 drives the second blower BL2 to exhaust the nitrogen oxide eliminator 310 and the second burner BN2 as shown in FIG. 5 . The gas can be circulated. In addition, the control unit 400 drives the second burner BN2 so that the temperature of the exhaust gas flowing into the second burner BN2 is higher than or equal to a predetermined regeneration temperature, thereby reducing the temperature of the nitrogen oxide remover 310 to a predetermined level. By making the regeneration temperature or higher, the nitrogen oxide remover 310 can be regenerated.

In the nitrogen oxide remover 310, sulfur oxides and particulate matter contained in the exhaust gas may be accumulated. As such, when sulfur oxides and particulate matter are accumulated in the nitrogen oxide remover 310 , the nitrogen oxide removal rate of the nitrogen oxide remover 310 may decrease and the back pressure may increase. In this case, by burning the sulfur oxides and particulate matter accumulated in the nitrogen oxide remover 310 by setting the temperature of the nitrogen oxide remover 310 to be higher than or equal to the predetermined regeneration temperature as described above, the nitrogen oxide remover 310 is removed. can play

For the circulation of exhaust gas, as shown in FIG. 1 , the first blower BL1 and the second blower BL2 are connected by a first circulation pipe PR1 , and the first burner BN1 and the second burner (BN2) may be connected by a second circulation pipe (PR2). In addition, the first circulation pipe PR1 and the second circulation pipe PR2 may be provided with a third flow path switching valve VC3 and a fourth flow path switching valve VC4 respectively connected to the control unit 400 . In addition, the third circulation pipe PR3 may be connected to the third flow path switching valve VC3 and the fourth flow path switching valve VC4.

In addition, although not shown, the first processing unit 200 and the nitrogen oxide remover 310 are connected to one blower by a first blower connecting pipe PL1 and a second blower connecting pipe PL2, respectively, The first processing unit 200 and the nitrogen oxide remover 310 may be connected to one burner by a first burner connection pipe PN1 and a second burner connection pipe PN2, respectively. In this case, the first, second, and third circulation pipes PR1, PR2, PR3 are unnecessary.

The second processing unit 300 may further include a sulfur oxide remover 320 . The sulfur oxide remover 320 may be connected to the nitrogen oxide remover 310 by a second exhaust connection pipe PC2 as shown in FIG. 1 . Accordingly, the exhaust gas from which nitrogen oxides have been removed in the nitrogen oxide remover 310 may flow through the second exhaust connection pipe PC2 to be introduced into the sulfur oxide remover 320 . The exhaust gas introduced into the sulfur oxide remover 320 may be discharged from the sulfur oxide remover 320 after the sulfur oxide is removed by the sulfur oxide remover 320 .

The sulfur oxide remover 320 may be, for example, a scrubber. However, the sulfur oxide remover 320 is not particularly limited, and any known one may be used as long as it can remove sulfur oxides from the exhaust gas.

The exhaust gas treatment apparatus 100 of a ship according to the present invention may further include a control unit 400 . The control unit 400 may control the first and second processing units 200 and 300 . To this end, the control unit 400 may be connected to, for example, the first to fourth flow path switching valves VC1, VC2, VC3, and VC4. Also, the control unit 400 may be connected to the first and second blowers BL1 and BL2 and the first and second burners BN1 and BN2. In addition, the control unit 400 may be connected to the first and second pressure sensors SP1 and SP2 and the temperature sensor ST.

When the ship operates in an Emission Control Area (ECA), the control unit 400 controls the exhaust gas to pass through the first and second processing units 200 and 300 as shown in FIG. 3 to form particulate matter from the exhaust gas. Substances, black carbon, nitrogen oxides and sulfur oxides can be removed.

The ship may be equipped with a satellite navigation device (not shown) called a Global Positioning System (GPS). Accordingly, the controller 400 may be connected to the satellite navigation system to determine whether an area currently operated by a ship is an exhaust gas regulation area.

For example, when the control unit 400 finds out through the satellite navigation device that the ship is operating in the emission control area, the control unit 400 switches the first flow path switching valve VC1 to the first processing unit 200 direction and , the second flow path switching valve VC2 may be switched in the direction of the nitrogen oxide remover 310 .

Accordingly, the exhaust gas discharged from the exhaust gas exhaust device ED flows into the first processing unit 200 through the exhaust pipe PE as shown in FIG. 3 to remove black carbon together with particulate matter. . The exhaust gas from which black carbon is removed together with particulate matter in the first processing unit 200 may be introduced into the nitrogen oxide remover 310 through the first exhaust connection pipe PC1 to remove nitrogen oxides. The exhaust gas from which nitrogen oxides have been removed from the nitrogen oxide remover 310 may be introduced into the sulfur oxide remover 320 through the second exhaust connection pipe PC2 to remove sulfur oxides.

In this case, the control unit 400 may drive the first and second blowers BL1 and BL2, respectively, to relieve the back pressure of the first processing unit 200 and the nitrogen oxide remover 310 and promote the catalytic reaction.

The control unit 400 may allow the exhaust gas to bypass the first processing unit 200 and the nitrogen oxide remover 310 when the vessel operates in an area other than the emission control area.

For example, if the control unit 400 knows through the satellite navigation device that the ship is operating in an area other than the emission control area, the control unit 400 controls the first flow path switching valve VC1 and the first bypass pipe PB1. direction, and the second flow path switching valve VC2 may switch to the second bypass pipe PB2 direction.

Accordingly, the exhaust gas discharged from the exhaust gas exhaust device ED flows through a part of the exhaust pipe PE and the first bypass pipe PB1 as shown in FIG. 4 to bypass the first processing unit 200 . pass, and a portion of the first exhaust connection pipe PC1 and the second bypass pipe PB2 may flow to bypass the nitrogen oxide remover 310 .

There are cases where it is necessary to remove sulfur oxides from exhaust gases even in non-exhaust gas regulated areas. Therefore, the exhaust gas that has bypassed the nitrogen oxide remover 310 flows into the sulfur oxide remover 320 through the second exhaust connection pipe PC2 to remove the sulfur oxide and then is discharged from the sulfur oxide remover 320 . can

When regeneration of the first processing unit 200 or the nitrogen oxide remover 310 is required, the control unit 400 includes the first processing unit 200 or the nitrogen oxide remover 310 and a burner BN for heating the exhaust gas. By allowing the exhaust gas to circulate therebetween, the temperature of the first processing unit 200 or the nitrogen oxide remover 310 may be higher than or equal to a predetermined regeneration temperature.

For example, when the pressure of the exhaust gas flowing through the exhaust pipe PE or the first exhaust connection pipe PC1 sensed by the first pressure sensor SP1 or the second pressure sensor SP2 is greater than or equal to a predetermined regeneration pressure, the control unit 400 closes the first and second flow path switching valves VC1 and VC2 to drive the first blower BL or the second blower BL2 and the first burner BN1 or the second burner BN2 there is. Accordingly, after the exhaust gas of the first processing unit 200 or the exhaust gas of the nitrogen oxide remover 310 is heated to a predetermined regeneration temperature or higher in the first burner BN1 or the second burner BN2, the first It may be returned to the processing unit 200 or the nitrogen oxide remover 310 . Accordingly, the first processing unit 200 or the nitrogen oxide remover 310 may be regenerated.

In this case, the control unit 400 operates the third and fourth flow path switching valves VC3 and VC4 so that the temperature of the first processing unit 200 is equal to or higher than a predetermined regeneration temperature, or the first processing unit 200 and The temperature of the nitrogen oxide remover 310 may be set to be above a predetermined regeneration temperature.

As described above, if the exhaust gas treatment apparatus of a ship according to the present invention is used, black carbon contained in the exhaust gas generated from the ship can be removed, and the exhaust gas treatment that can also remove the black carbon contained in the exhaust gas By making the size of the device small, it can be easily installed on a ship with many space restrictions.

The exhaust gas treatment apparatus of a ship described as described above is not limited to the configuration of the above-described embodiment, but the embodiments are configured by selectively combining all or part of each embodiment so that various modifications can be made. it might be

100: exhaust gas treatment device 200: first treatment unit
210: filter 211,211 ': flow path
212: oxidation catalyst coating layer 213: closing member
300: second processing unit 310: nitrogen oxide remover
320: sulfur oxide remover 400: control unit
ED : Exhaust gas exhaust device PE : Exhaust pipe
BN1 : 1st burner BN2 : 2nd burner
BL1 : 1st blower BL2 : 2nd blower
PC1: 1st exhaust connector PC2: 2nd exhaust connector
PB1 : 1st bypass pipe PB2 : 2nd bypass pipe
PN1 : 1st burner connection pipe PN2 : 2nd burner connection pipe
PL1 : 1st blower connector PL2 : 2nd blower connector
PR1 : 1st circulation pipe PR2 : 2nd circulation pipe
PR3 : 3rd circulation pipe SP1 : 1st pressure sensor
SP2: Second pressure sensor ST: Temperature sensor
VC1 : 1st flow path selector valve VC2 : 2nd flow path selector valve
VC3: 1st flow path selector valve VC4: 2nd flow path selector valve

Claims (10)

a first processing unit for removing black carbon together with particulate matter from exhaust gas discharged from an exhaust gas exhaust device provided in a ship; and
a second processing unit for removing at least one of nitrogen oxides and sulfur oxides from the exhaust gas from which particulate matter and black carbon have been removed in the first processing unit; includes,
The first processing unit includes a filter for filtering and removing particulate matter from the exhaust gas, the filter includes an oxidation catalyst for oxidizing black carbon, the black carbon oxidized by the oxidation catalyst is filtered in the filter A vessel's exhaust gas treatment system that is removed from the exhaust gas. The method of claim 1,
The oxidation catalyst is a ceria-based catalyst or an oxide-based catalyst. 3. The method of claim 2,
The ceria-based catalyst is Pt/CeO ₂ , Ni/CeO ₂ , Cu/CeO ₂ and, Including any one or more of Cu/CeO ₂ , wherein the oxide-based catalyst includes any one or more of Co ₃ O ₄ , CuO, CuO-Co ₃ O ₄ , CuO-MnO ₂ and, Co ₃ O ₄ -MnO ₂ Ship's exhaust gas treatment system. According to claim 1,
A plurality of flow paths through which exhaust gas flows are formed in the filter,
When one side of one of the flow paths is opened and the other side is closed, one side of the flow path and the neighboring flow path is closed and the other side is opened. 5. The method of claim 4,
An exhaust gas treatment apparatus for a vessel in which an oxidation catalyst coating layer coated with the oxidation catalyst is formed on an inner surface of the flow path having one side open and the exhaust gas flowing through the open side. The method of claim 1,
and the second treatment unit includes a nitrogen oxide remover for removing nitrogen oxides from the exhaust gas by reducing nitrogen oxides to nitrogen using a reducing agent and a reducing catalyst. 7. The method of claim 6,
The exhaust gas treatment apparatus of a ship further comprising a control unit for controlling the first and second processing units. 8. The method of claim 7,
The control unit may control particulate matter, black carbon, nitrogen oxides, and sulfur oxides from the exhaust gas through the first and second processing units when the ship operates in an Emission Control Area (ECA). A ship's exhaust gas treatment system to be removed. 8. The method of claim 7,
The control unit is an exhaust gas treatment apparatus of a ship that allows the exhaust gas to bypass the first treatment unit and the nitrogen oxide remover when the ship operates in an area other than the exhaust gas regulation area. 8. The method of claim 7,
When regeneration of the first processing unit or the nitrogen oxide eliminator is required, the control unit causes the exhaust gas to circulate between the first processing unit or the nitrogen oxide remover and a burner for heating the exhaust gas, so that the first processing unit However, the exhaust gas treatment device of the ship so that the temperature of the nitrogen oxide remover is above a predetermined regeneration temperature.

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