KR101867067B1 - SOx Reduction System For Ship And Operating Method Of That - Google Patents

Abstract

Disclosed are an apparatus for reducing sulfur oxides for a ship and an operation method thereof. The apparatus for reducing sulfur oxides for a ship according to the present invention is configured to be able to perform dry running by directly supplying exhaust gas discharged from a discharge facility into a reactor such that an additional branch pipe or a bypass damper installed in a conventional U-type scrubber is not required, thereby reducing installation costs, increasing space utilization, and preventing accidents caused by malfunctioning of the bypass damper in advance.

Description

TECHNICAL FIELD [0001] The present invention relates to a sulfur oxide reduction apparatus for a ship, and a method of operating the sulfur oxide reduction apparatus for a ship,

The present invention relates to a sulfur oxides abatement apparatus for ships and a method of operating a sulfur oxides abatement apparatus for ships, and more particularly, This invention relates to a ship sulfuric acid reduction device and a method for operating a ship sulfuric acid reduction device, which require a small space maintenance and a low maintenance because no separate branch piping or bypass damper is required.

The problem of air pollution and global warming due to the increase of fossil fuel consumption due to the rapid progress of industrialization is becoming serious.

One of the main causes of this air pollution is sulfur oxides (SOx) and nitrogen oxides (NOx) contained in exhaust gas of engines, thermal power plants and factories of vehicles. Emissions regulation of each country is being introduced.

Nitrogen oxides and sulfur oxides are the representative air pollutants emitted by the International Maritime Organization (IMO), an agency under the United Nations (UN), of which sulfur oxides will be released from January 1, 2010 Sulfur Emission Control Area (SECA) is regulated to contain less than 0.1% of sulfur compounds in the fuel used. From January 1, 2020, it is regulated to be less than 0.5% sulfur compounds in the fuel used in the Global Sea.

In order to meet various emission control standards, various facilities are generally applied to the exhaust gas containing sulfur oxides (SOx), particulate matter, etc. in industrial combustion facilities or two-stroke ship internal combustion engines have.

A representative example of such a conventional exhaust gas treating apparatus includes a wet scrubber (scrubbing tower) for removing sulfur oxides by spraying a basic solution such as NaOH or seawater to the exhaust gas.

Generally, a scrubber provided for a ship as a sulfur oxide reduction apparatus can be classified into a hybrid loop type and an open loop type. The hybrid loop type scrubber is equipped with a closed loop type and an open loop type.

The closed-loop type scrubber is used in the regulated area SECA (sulfuric acid emission control area) and injects a basic solution of NaOH into the scrubber to reduce sulfur oxides and circulate NaOH.

The open-loop type scrubber is mainly used in the global sea and reduces the amount of sulfur oxides by injecting sea water into the scrubber. In some cases, an open-loop scrubber may be used in the SECA area.

In addition, conventional wet scrubbers can be classified into U-type scrubber and I-type (or in-line type). The U-type scrubber may be provided in two forms, one with or without a reactor inlet.

FIG. 1 is a view showing a conventional U-type scrubber without a reactor inlet, wherein FIG. 1 (a) schematically shows the entire structure, FIG. 1 (b) (C) is a view showing a U-type scrubber actually employed in the shipping company Wartsila.

Referring to FIG. 1, a U-type scrubber 100 having no reactor inlet includes a reactor 20 supplied with exhaust gas discharged from an exhaust gas discharge facility 10 of a ship.

The exhaust gas discharge device 10 may include a main engine 11, a generator engine 12 of one or more generators and a boiler 13 of one or more. Gas is discharged

At this time, the exhaust gas discharged through each discharge pipe EL can be introduced into the reactor 20 through the branch pipe BL branching from each discharge pipe EL and supplied into the scrubber apparatus.

A bypass damper BD is provided at a position where the branch pipe BL branches from the discharge pipe EL so that the exhaust gas is discharged through the discharge pipe EL as it is or through the branch pipe BL to the reactor 20, As shown in FIG.

The U-type scrubber 100 not having a reactor inlet further includes a pump 50 for supplying a rinse solution into the reactor 20. As the cleaning liquid supplied by the pump 50, a basic solution such as NaOH, seawater, fresh water or the like may be used.

An exhaust gas outlet 30 through which the purified exhaust gas with sulfur oxides removed is formed at the upper portion of the reactor 20 and a cleaning liquid discharge line 40 for discharging the sprayed cleaning liquid is provided at the lower portion of the reactor 20 ) Can be connected.

FIG. 2 is a schematic view of a conventional U-type scrubber equipped with a reactor inlet. FIG. 2 (b) is a schematic view showing the entire structure of the scrubber. As shown in FIG.

Referring to FIG. 2, the U-type scrubber 200 having a reactor inlet portion is basically the same as the U-type scrubber 100 having no reactor inlet portion. The reactor 20 has a reactor inlet portion (21) and a reactor main body (22).

The branch pipe BL branching from the discharge pipe EL is connected to the reactor inlet 21 side and the lower portion of the reactor inlet unit 21 and the reactor body 22 can be interconnected.

The exhaust gas discharged through the discharge pipe EL flows into the reactor inlet 21 through the branch pipe BL branching from the discharge pipe EL and flows into the reactor inlet 21 and the reactor body 22, And finally exhausted through an exhaust gas outlet 30 formed in the upper part of the reactor main body 22.

A bypass damper BD is provided at a position where the branch pipe BL branches from the discharge pipe EL so that the exhaust gas is discharged through the discharge pipe EL as it is or through the branch pipe BL to the reactor inlet 21, respectively.

The U-type scrubber 200 having a reactor inlet further includes a pump 50 for supplying a cleaning liquid into the reactor inlet portion 21 and the reactor main body 22. At this time, the pump 50 may be configured to supply the cleaning liquid to the reactor inlet portion 21 and the reactor body 22, respectively.

Cleaning fluid discharge lines 41 and 42, which can discharge the cleaning fluid injected into the inside of the reactor inlet part 21 and the reactor main body 22, respectively, may be connected.

Since the U-type scrubber 200 having the reactor inlet portion injects the cleaning liquid for reducing sulfur oxides into the reactor inlet portion 21 and the reactor main body 22, the U-type scrubber 200 having the reactor inlet portion 21 -type scrubber (100). However, since a space is required more than when the reactor inlet 21 is not provided, a spatial restriction may occur.

In the case of the U-type scrubbers 100 and 200 shown in FIGS. 1 and 2, the ship can be driven only when it is necessary to reduce the sulfur oxides from the exhaust gas using the unique sulfur fuel.

When the ship uses low-sulfur fuel that meets IMO (International Maritime Organization) regulations, the exhaust gas can be directly discharged through the discharge pipe (EL) without using the U-type scrubber (100, 200).

Furthermore, when an emergency occurs in which the U-type scrubbers 100 and 200 are in trouble, the exhaust gas may be directly discharged through the discharge pipe EL without passing through the U-type scrubbers 100 and 200. At this time, it is necessary to use high-quality fuel which does not require reduction of sulfur oxides. A good quality fuel that does not require reduction of sulfur oxides means a fuel with a sulfur content of less than 0.1% in the SECA regulated area and a sulfur content of less than 0.5% in the globe sea area.

3 (a) is a schematic view of an existing I-type scrubber, and FIG. 3 (b) is a view showing an I-type scrubber actually employed in a ship company Yara.

Referring to FIG. 3, the I-type scrubber 300 includes a reactor 20 supplied with an exhaust gas roll discharged from an exhaust gas discharge facility 10 of a ship.

In the I-type scrubber 300, exhaust gas is supplied to the inside of the reactor 20 through the branch pipe BL branching from the exhaust pipe EL in the U-tpye scrubbers 100 and 200, (EL) through which the exhaust gas is discharged from the reactor (10) is directly connected directly to the lower portion of the reactor (20).

The exhaust gas supplied to the lower portion of the reactor 20 through the exhaust pipe EL is exhausted through the exhaust gas outlet 30 formed in the upper portion of the reactor 20 after the sulfur oxide is purified while passing through the inside of the reactor 20, As shown in FIG.

The I-type scrubber 300 may further include a pump 50 for supplying a cleaning liquid to the inside of the reactor 20 like the U-type scrubbers 100 and 200, A cleaning liquid discharge line 40 may be connected.

Since the discharge pipe EL is directly connected to the lower portion of the reactor 20 in the I-type scrubber 300, the cleaning liquid injected into the reactor 20 by the pump 50 is discharged to the discharge pipe EL There is a problem that the exhaust gas is introduced into the exhaust gas discharge device 10 side.

In order to prevent this, a guard (guard) 60 may be installed inside the reactor 20 to prevent the washing liquid from flowing into the discharge pipe EL.

The guard 60 includes a tubular first guard 61 extending in the vertical direction at a point where the discharge pipe EL is connected to the lower end of the reactor 20 and a second guard 61 disposed on the upper portion of the first guard 61 And a second guard 62 provided to be inclined downward so that the cleaning liquid can easily flow down.

The I-type scrubber 300 is different from the U-type scrubber 100 and 200 in that the dry running is possible.

The dry running means that the washing liquid is not sprayed into the reactor 20 by the pump 50 and the exhaust gas discharged from the exhaust gas discharging facility 10 is discharged through the inside of the reactor 20 as it is.

That is, in a ship equipped with the I-type scrubber 300, the exhaust gas discharged from the exhaust gas discharging facility 10 is necessarily discharged through the reactor 20 even if refining operation of the sulfur oxide is not required.

Since the I-type scrubber 300 does not require the branch piping BL provided in the U-type scrubbers 100 and 200 and the bypass damper BD provided in the branch piping BL, the piping is simple , It has an advantage that it can be used in a narrow space because of a small space restriction.

However, due to the characteristics of the ship, frequent rolling, pitching, and the like occur during navigation. Even if the guard 60 is installed in the reactor 20, the cleaning liquid overflows and is discharged through the discharge pipe EL 10).

The above-described U-type scrubbers 100 and 200 are excellent in reducing sulfur oxides. On the other hand, since discharge piping (EL) and branch piping (BL) must be provided, piping construction is complicated and dry running is not possible There are disadvantages.

In the case of the U-type scrubbers 100 and 200, a bypass damper BD must be installed at a position where the branch pipe BL branches from each discharge pipe EL. When the exhaust gas is discharged from the discharge pipe EL, There is a problem in that facility cost increases because two bypass dampers (BD) must be installed for each line in order to be selectively transferred to the branch pipe (BL) side or the branch pipe (BL) side.

Although only one bypass damper (BD) is shown in FIGS. 1 and 2, two bypass dampers (BD) are provided in the downstream of the bifurcation points of the pipes. (E.g., (1) and (2) in Fig. 1)

In addition, the bypass damper (BD) is frequently broken due to the characteristics of the apparatus. Therefore, if a failure of the bypass damper (BD) occurs while the ship is navigating, it can lead to a very serious problem such as shutting the operation of the scrubber completely.

On the other hand, although the I-type scrubber 300 is dry-running, there is a disadvantage in that there is a high risk that the cleaning liquid is introduced into the exhaust gas discharging facility 10 such as an engine and a boiler.

The present invention improves the U-type scrubber (100, 200) and the I-type scrubber (300) to provide a new type of sulfur oxide reduction device capable of dry running, I want to.

According to an aspect of the present invention, there is provided an exhaust emission control system for a ship including a main engine and at least one generator engine. A discharge pipe for discharging the exhaust gas generated from each of the exhaust gas discharge devices; A reactor in which sulfur oxides are reduced by receiving exhaust gas transferred to the discharge pipe; And a pump for supplying a cleaning liquid into the reactor, wherein a discharge pipe for discharging the exhaust gas from the main engine is connected directly to a side of the reactor and generates electricity required for maintenance of the ship among the generator engines A discharge pipe for discharging exhaust gas from a generator engine is branched to a branch line and connected to the side of the reactor, and the remaining discharge pipe is directly connected to the side of the reactor. do.

At least one exhaust pipe branched to the branch line is provided with a bypass damper to selectively control the exhaust gas to be discharged to the outside through the exhaust pipe or supplied to the reactor through the branch line.

The exhaust gas discharging apparatus may further include at least one boiler, and a discharge pipe for discharging the exhaust gas discharged from the boiler may be directly connected to the side of the reactor.

An exhaust gas outlet for exhausting the purified exhaust gas is formed in the upper part of the reactor, and a cleaning liquid discharge line for discharging the cleaning liquid supplied into the reactor may be connected to the lower part.

The cleaning liquid discharge line may be composed of a GRE pipe.

The sulfur oxides abatement apparatus according to the present embodiment may further include a sealing air fan for supplying air into the cleaning liquid discharge line.

According to another embodiment of the present invention, the reactor may be divided into a reactor inlet portion directly receiving exhaust gas and a reactor body interconnecting the exhaust gas inlet portion and the lower portion, The exhaust gas supplied to the reactor may be sequentially passed through the reactor inlet portion and the reactor main body to reduce sulfur oxides.

The pump can supply the cleaning liquid to the reactor inlet and the main body, respectively.

An exhaust gas outlet through which the purified exhaust gas is discharged may be formed in an upper portion of the reactor main body and a rinse solution discharge line through which the fresh semen supplied into the reactor is discharged may be provided in the reactor inlet portion and the reactor main body Can be connected.

The sulfur oxides abatement apparatus according to another embodiment of the present invention may further include a sealing air fan for supplying air into each of the cleaning liquid discharge lines.

According to another aspect of the present invention, there is provided a sulfur oxide reduction apparatus comprising: an exhaust gas outlet formed at an upper portion of the reactor body to discharge purified exhaust gas; And an emergency damper formed at an upper portion of the reactor inlet. When the emergency operation is not possible in the event that the ship's sulfur oxide reduction device can not be driven, or when the exhaust gas purification is not required, It is opened together with the gas outlet so that the exhaust gas inside the reactor can be quickly discharged.

The present invention provides a sulfur oxides abatement apparatus for a ship including a reactor in which sulfur oxides are reduced by spraying a rinse liquid into the vessel, the apparatus comprising a main engine and at least one generator engine, A discharge pipe for discharging the exhaust gas generated from the discharge equipment is directly connected to the side of the reactor to allow dry running and air is blown from the cleaning liquid discharge line for discharging the cleaning liquid sprayed into the reactor to the inside of the reactor Thereby preventing a high-temperature exhaust gas from flowing into the cleaning liquid discharge line.

In order to achieve the above object, according to the present invention, there is provided an exhaust gas purification system for an internal combustion engine, comprising: a main exhaust system for supplying exhaust gas generated from a main engine and at least one or more generator engines provided in a ship, Stage 1; And a second step of discharging the exhaust gas supplied into the reactor through the inside of the reactor and through an exhaust gas outlet formed in the upper part of the reactor. In the first step, the exhaust gas is discharged from the main engine The exhaust pipe is directly connected to the side of the reactor and the exhaust pipe for discharging the exhaust gas from the generator engine that generates power required for maintenance of the ship is branched to a branch line and connected to the side of the reactor, And the remaining discharge pipes are directly connected to the side of the reactor.

In the second step, when the purification of the exhaust gas is required, the cleaning liquid may be sprayed into the reactor, and when the exhaust gas is not purified, the cleaning liquid may not be sprayed into the reactor.

The method of operating a sulfur oxides abatement apparatus according to the present invention may further include a third step of injecting air from a cleaning liquid discharge line formed in the lower portion of the reactor toward the inside of the reactor, It is possible to prevent the gas from flowing into the cleaning liquid discharge line.

The sulfur oxides abatement apparatus according to the present invention is capable of dry running by directly supplying exhaust gas from an exhaust gas discharge pipe to a reactor, and is capable of performing U-type Type scrubber, there is no need for a branch piping installed in a conventional U-type scrubber, thereby simplifying the structure and increasing the space utilization.

In addition, since a bypass damper installed at a branch point of the branch pipe from the discharge pipe is not required, the facility cost can be reduced, and it is possible to prevent an accident caused by the failure of the bypass damper from occurring.

Further, since the discharge pipe is connected to the side surface of the reactor, the cleaning liquid in the reactor is overflowed like an I-type scrubber, and there is no risk of entering the exhaust gas discharging facility such as an engine or a boiler , There is no need to provide a separate guard inside the reactor.

In addition, the sulfur oxides abatement apparatus according to the second embodiment of the present invention can quickly and effectively discharge the exhaust gas in the reactor during an emergency or dry running by providing an emergency damper that can be opened and closed at the top of the reactor inlet.

In addition, the apparatus for reducing sulfur oxides according to the present invention further includes a sealing air fan for blowing air to the side of the cleaning liquid discharge line, so that the high temperature exhaust gas flows into the cleaning liquid discharge line to prevent the pipe from being thermally deformed .

FIG. 1 is a view showing a conventional U-type scrubber without a reactor inlet, wherein FIG. 1 (a) schematically shows the entire structure, FIG. 1 (b) (C) is a view showing a U-type scrubber actually employed in the shipping company Wartsila.
FIG. 2 is a schematic view of a conventional U-type scrubber equipped with a reactor inlet. FIG. 2 (b) is a schematic view showing the entire structure of the scrubber. As shown in FIG.
FIG. 3 (a) is a schematic view of an existing I-type scrubber, and FIG. 3 (b) is a view showing an I-type scrubber actually employed in a marine company Yara.
4 is a schematic view of a sulfur oxides abatement apparatus for ships according to a first embodiment of the present invention, FIG. 4 (a) schematically showing the overall configuration, and FIG. 4 Respectively.
FIG. 5A is a schematic view of a sulfur oxides abatement apparatus for ships according to a second embodiment of the present invention, and FIG. 5B is a schematic view of a ship sulfur oxides abatement apparatus according to a second embodiment of the present invention .

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention. Like reference symbols in the drawings denote like elements.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the following examples can be modified in various forms, and the scope of the present invention is not limited to the following examples.

4 is a schematic view of a sulfur oxides abatement apparatus for ships according to a first embodiment of the present invention, FIG. 4 (a) schematically showing the overall configuration, and FIG. 4 Respectively.

Referring to FIG. 4, the shipborne sulfur oxide reduction apparatus 400 according to the first embodiment of the present invention is basically constructed such that exhaust gas flows into a side of a reactor and a guard is not installed in the reactor U-type scrubber.

The sulfur oxides abatement apparatus 400 according to the first embodiment of the present invention includes a reactor 420 for reducing sulfur oxides by receiving exhaust gas discharged from an exhaust gas exhaust facility 410 of a ship.

The exhaust gas discharging facility 410 may include a main engine M / E 411, one or more generator engines A / E 412, and one or more boilers 413, Exhaust gas is discharged through an exhaust pipe (EL).

4 shows only one discharge pipe EL for discharging the exhaust gas from the generator engine 412 and the boiler 413 for convenience. However, when the generator engine 412 and the boiler 413 are provided in plural, A discharge pipe EL may be provided for each facility.

At this time, the discharge pipe EL can be connected to the side of the reactor 420. That is, the sulfur oxides abatement apparatus 400 according to the first embodiment of the present invention is not limited to the conventional U-type scrubber 100, but the discharge piping is branched to the branch piping and connected to the reactor, Is directly connected to the reactor 420, there is no need to provide a separate branch pipe or a bypass damper.

In the first embodiment, unlike the second embodiment, which will be described later, since the reactor inlet is not provided, the discharge pipe EL must be connected at a relatively low position on the side of the reactor 420.

According to such a configuration, there is a danger that the cleaning liquid injected into the reactor 420 flows back to the discharge pipe EL. To prevent this, the amount of the cleaning liquid supplied into the reactor 420 is appropriately taken into consideration, ) Should be determined.

Preferably, the discharge line EL can be connected to the side of the reactor 420 at a position higher than the quarter point in the height direction of the reactor 420 from the lower end of the reactor 420.

4 (b), the discharge pipe EL may include bent portions bent to a position higher than the position connected to the reactor 420 to prevent backflow of the cleaning liquid.

Each of the discharge lines EL is preferably formed as a separate line and connected to the reactor 420 as shown in FIG. 4. However, the present invention is not limited to this, and after each line is integrated into one line, (Not shown).

Meanwhile, in this embodiment, the exhaust pipe EL 'through which the exhaust gas is discharged from the at least one generator engine 412' may be provided as a separate line branched to the branch pipe BL ' 'Are connected to the sides of the reactor 420. That is, at least one discharge pipe EL 'is constructed in the same manner as in the conventional U-type scrubber 100.

The reason why the structure is constructed as described above is to exhaust the exhaust gas generated from the generator engine 412 'driven at the time of maintenance of the ship, and is not intended to be used at the time of operation of the ship.

During the maintenance of the ship, the ship can operate only the minimum generator engine 412 'to supply the power required for maintenance in a state where the ship is in a docked state. The exhaust gas discharged from the generator engine 412 'operated at this time can be discharged directly to the outside through the discharge pipe EL' without being supplied to the reactor 420 side. According to this, there is an advantage that the power supplied from the existing land is not used for the maintenance of the ship.

Therefore, it is sufficient that the generator engine 412 'having the separate discharge pipe EL' and the branch pipe BL 'is provided at a minimum so as to supply power required for maintenance of the ship.

A bypass damper BD 'may be installed at a position where the branch pipe BL' branches from the discharge pipe EL 'and the bypass damper BD' may be opened such that the branch pipe BL ' And the discharge pipe EL 'may be controlled to be opened during maintenance of the ship.

The apparatus 400 for reducing sulfur oxides according to the first embodiment of the present invention further includes a pump 450 for supplying a cleaning liquid into the reactor 420. As the cleaning liquid supplied by the pump 450, a basic solution such as NaOH, seawater, fresh water or the like may be used.

An exhaust gas outlet 430 through which the purified exhaust gas from which the sulfur oxide is removed is formed in the upper part of the reactor 420. A rinse solution discharge line 440 for discharging the rinse solution sprayed on the lower part of the reactor 420 ) Can be connected.

The sulfur oxides abatement apparatus 400 according to the first embodiment of the present invention further includes a sealing air fan 440 for supplying air to the cleaning liquid discharge line 440 so that hot exhaust gas does not flow into the cleaning liquid discharge line 440, a sealing air fan 470 may be further included.

In this embodiment, a GRE pipe resistant to corrosion is used as the cleaning liquid discharge line 440, and if a hot exhaust gas flows into the pipe, it is likely to be damaged or deformed by heat.

Therefore, the present invention uses the sealing air fan 470 to inject the incoming air from within the cleaning liquid discharge line 440 toward the interior of the reactor 420, thereby preventing hot exhaust gas from entering the pipe.

FIG. 5A is a schematic view of a sulfur oxides abatement apparatus for ships according to a second embodiment of the present invention, and FIG. 5B is a schematic view of a ship sulfur oxides abatement apparatus according to a second embodiment of the present invention .

Referring to FIG. 5, the shipborne sulfur oxide reduction apparatus 500 according to the second embodiment of the present invention is basically similar to the first embodiment in that exhaust gas is basically introduced into the side of the reactor, Is a U-type scrubber which is not installed.

The sulfur oxides abatement apparatus 500 according to the second embodiment of the present invention includes a reactor 520 for reducing sulfur oxides by receiving exhaust gas discharged from an exhaust gas exhaust facility 510 of a ship, (520) may be divided into a reactor inlet portion (521) and a reactor main body (522).

Since the reactor inlet portion 521 is the first to be supplied, it may be vulnerable to corrosion due to exhaust gas. Therefore, it is preferable that the reactor inlet 521 is detachably installed so as to be periodically replaced.

The exhaust gas discharging facility 510 may include a main engine 511, one or more generator engines 512 and one or more boilers 513. The exhaust gas discharging facility 510 may include an exhaust pipe EL provided in each facility, Gas is discharged. 5 shows only one discharge pipe EL for discharging the exhaust gas from the generator engine 512 and the boiler 513 for convenience. However, when the generator engine 512 and the boiler 513 are provided in multiple units, A discharge pipe EL may be provided for each facility.

At this time, the discharge pipe EL can be connected to the side of the reactor inlet 521. That is, the present invention is not limited to the conventional U-type scrubber 200 because the discharge pipe is branched to the branch pipe and connected to the reactor inlet, but the discharge pipe EL is directly connected to the reactor inlet 521, There is no need to install branch piping or bypass damper.

The discharge pipe EL can be connected to the side of the reactor inlet 520 at a position higher than the quarter point in the height direction of the reactor inlet 521 from the lower end of the reactor inlet 521. This is to prevent the washing liquid injected into the reactor inlet portion 521 from flowing back to the discharge pipe EL.

Also, it is preferable that the discharge pipe EL is connected to a position higher than the connection portion 523 to which the reactor inlet portion 521 and the reactor body 522 are connected. This prevents some of the exhaust gas supplied to the reactor inlet part 521 from being directly introduced into the reactor body 522 and flows into the reactor body 522 after the exhaust gas sufficiently passes through the inner space of the reactor inlet part 521 So that it can be used. Therefore, the position where the discharge pipe EL is connected to the reactor inlet 521 may be more effective at a higher position on the side of the reactor inlet 521.

As shown in FIG. 5, each of the discharge pipes EL is preferably formed as a separate line and connected to the reactor inlet part 521 side. However, the present invention is not limited to this, and each line may be integrated into one line. And may be connected to the reactor inlet 521.

Meanwhile, in this embodiment, the exhaust pipe EL 'through which the exhaust gas is discharged from at least one generator engine 512' may be provided as a separate line branched to the branch pipe BL ' 'Are connected to the side of the reactor inlet part 521.

This is because, as in the first embodiment, the exhaust gas discharged from at least one or more generator engines 512 'activated for maintenance of the ship is discharged through the discharge pipe EL' Only the discharge pipe EL 'connected to the minimum generator engine 512' for supplying power for maintenance can be configured to branch to the branch pipe BL '.

A bypass damper BD 'may be installed at a position where the branch pipe BL' branches from the discharge pipe EL 'and the bypass damper BD' may be opened such that the branch pipe BL ' And the discharge pipe EL 'may be controlled to be opened during maintenance of the ship.

The sulfur oxides abatement apparatus 500 according to the second embodiment of the present invention further includes a pump 550 for supplying a cleaning liquid into the reactor inlet 521 and the reactor body 522, respectively. As the cleaning liquid supplied by the pump 550, a basic solution such as NaOH, seawater, fresh water or the like may be used.

An exhaust gas outlet 530 through which the purified exhaust gas from which the sulfur oxides are removed is discharged from the upper portion of the reactor main body 522. The injected cleaning liquid is supplied to the lower portion of the reactor inlet 521 of the reactor inlet 521 The cleaning liquid discharge lines 541 and 542 may be respectively connected.

The sulfuric acid abatement apparatus 500 according to the second embodiment of the present invention is provided with a seal ring for supplying air to be supplied into the cleaning liquid discharge lines 541 and 542 so that hot exhaust gas does not flow into the cleaning liquid discharge lines 541 and 542, And may further include an air fan 570.

The sealing air fan 570 injects the incoming air from the inside of the washing liquid discharge lines 541 and 542 toward the inside of the reactor inlet 521 and the inside of the reactor main body 522 so that dehumidified gas is supplied to the washing liquid discharge lines 541, 542, respectively.

Particularly, in the sulfur oxide reduction apparatus 500 according to the second embodiment of the present invention, unlike the first embodiment, the lower portion of the reactor inlet 521 and the reactor main body 522 are connected by the connecting portion 523, There is a high risk that the exhaust gas flowing from the reactor inlet 521 to the reactor body 522 through the connecting portion 523 flows into the cleaning liquid discharge line 542 connected to the lower portion of the reactor body 522. Therefore, In the example, it has a more advantageous effect.

The sulfur oxides abatement apparatus 500 according to the second embodiment of the present invention may further include an emergency damper 580 formed at an upper portion of the reactor inlet 521.

The exhaust gas discharged from the exhaust gas discharging facility 510 in this embodiment must be discharged after passing through the inside of the reactor 520 even when purification of sulfur oxides is not required. At this time, although the exhaust gas outlet 530 is always open, it is necessary to discharge the exhaust gas in the reactor 520 more quickly in case of an emergency such as a problem in driving the sulfur oxide reduction apparatus 500 .

Therefore, in the present embodiment, the emergency damper 580 is opened when an emergency situation occurs, so that the exhaust gas inside the reactor 520 can be discharged more quickly. The emergency damper 580 can be opened to quickly discharge the exhaust gas even when the sulfur oxide reduction apparatus 500 is dry running.

The exhaust gas outlet 530 and the emergency damper 580 are both opened at the time of emergency or dry running so that the pressure difference between the reactor inlet 521 and the reactor main body 522 So that the exhaust gas can be stably discharged.

The sulfur oxides abatement apparatuses 400 and 500 according to the first and second embodiments of the present invention are configured to supply exhaust gas directly from the exhaust pipe EL to the reactors 420 and 520 to perform dry running, Type scrubbers that do not need to be provided with additional guards inside the reactors 420 and 520. The U-

According to the sulfur oxides abatement apparatuses 400 and 500 according to the first and second embodiments of the present invention, the branch piping BL installed in the conventional U-type scrubbers 100 and 200 is not required, As a result, the structure is simplified and the space utilization is increased.

In addition, since the bypass damper BD provided at the branching point of the branch pipe BL from the discharge pipe EL is not required, the facility cost can be reduced, and the bypass damper BD can be prevented from being damaged It is possible to prevent an accident from occurring in advance.

In the sulfur oxides abatement apparatuses 400 and 500 according to the first and second embodiments of the present invention, since the discharge pipe EL is connected to the side of the reactor 420 or the reactor inlet unit 521, there is no risk that the cleaning liquid in the reactor will overflow and flow into the exhaust gas discharging facility 410 or 510 like the -type scrubber 300, so that there is no need to provide a separate guard inside the reactor.

The sulfur oxides abatement apparatus according to the second embodiment of the present invention is provided with an emergency damper 580 that can be opened and closed at an upper portion of a reactor inlet portion 521 so that the exhaust gas Can be discharged quickly and effectively.

In addition, the sulfur oxides abatement apparatuses 400 and 500 according to the first and second embodiments of the present invention include sealing air fans 470 and 570 for blowing air to the cleaning liquid discharge lines 440, 541 and 542, Thereby preventing the high temperature exhaust gas from flowing into the cleaning liquid discharge lines 440, 541 and 542 and preventing the pipe from being thermally deformed.

Particularly, the sealing air fans 470 and 570 are installed in the cleaning liquid discharge lines 440 and 570 when the sulfur oxides abatement apparatuses 400 and 500 according to the first and second embodiments of the present invention are operated by dry running, 541 and 542, respectively. Since the cleaning liquid is not sprayed into the reactors 420 and 520 at the time of dry running, there is a high risk that the high temperature exhaust gas flows into the cleaning liquid discharge lines 440, 541 and 542.

While the present invention has been particularly shown and described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And should not be construed as limiting the scope of the invention.

400: Sulfur oxide reduction device according to the first embodiment
410: Exhaust gas discharge facility 420: Reactor
430: exhaust gas outlet 440: cleaning liquid discharge line
450: Pump 470: Sealing air fan
500: Sulfur oxide reduction device according to the second embodiment
510: Exhaust gas exhausting facility 520: Reactor
521: Reactor inlet part 522: Reactor main body
523: Connection portion 530: Exhaust gas outlet
541, 542: Cleaning liquid discharge line 550: Pump
570: Sealing air fan 580: Emergency damper

Claims (12)

An exhaust emission system of a ship including a main engine and at least one generator engine;
A discharge pipe for discharging the exhaust gas generated from each of the exhaust gas discharge devices;
A reactor in which sulfur oxides are reduced by receiving exhaust gas transferred to the discharge pipe; And
And a pump for supplying a cleaning liquid into the reactor,
A discharge pipe for discharging the exhaust gas from the main engine is directly connected to the side of the reactor,
The exhaust pipe connected to the generator engine driven at the time of maintenance of the ship is branched into a pipe for discharging the exhaust gas to the outside and a branch line connected to the side of the reactor,
Wherein a discharge pipe connected to a generator engine which is not driven during maintenance of a ship among the generator engines is directly connected to the side of the reactor.
Sulfur oxide abatement apparatus for ships.
The method according to claim 1,
Wherein a bypass damper is provided at a branch point of the discharge pipe branched to the branch line to selectively control the exhaust gas to be discharged to the outside through the discharge pipe or supplied to the reactor through the branch line.
Sulfur oxide abatement apparatus for ships.
The method of claim 2,
Wherein the exhaust emission device further comprises at least one boiler,
And a discharge pipe for discharging the exhaust gas discharged from the boiler is directly connected to the side of the reactor.
Sulfur oxide abatement apparatus for ships.
The method of claim 2,
Wherein an exhaust gas discharge port through which the purified exhaust gas is discharged is formed in the upper part of the reactor and a cleaning liquid discharge line through which the cleaning liquid supplied into the reactor is discharged is connected to the lower part.
Sulfur oxide abatement apparatus for ships.
The method of claim 4,
The cleaning liquid discharge line is constituted by a GRE pipe,
And a sealing air fan for supplying air into the cleaning liquid discharge line.
Sulfur oxide abatement apparatus for ships.
The method according to claim 2 or 3,
The reactor includes a reactor inlet portion directly receiving exhaust gas and a reactor body interconnected to the reactor inlet portion and the lower portion,
Wherein the exhaust gas supplied to the reactor inlet portion is sequentially passed through the reactor inlet portion and the reactor main body to reduce sulfur oxides.
Sulfur oxide abatement apparatus for ships.
The method of claim 6,
Characterized in that the pump supplies the cleaning liquid to the reactor inlet and to the body respectively.
Sulfur oxide abatement apparatus for ships.
The method of claim 7,
An exhaust gas outlet through which the purified exhaust gas is discharged is formed in the upper portion of the reactor body,
And a cleaning liquid discharge line through which the fresh semen supplied into the reactor is discharged is connected to the reactor inlet part and the reactor body, respectively.
Sulfur oxide abatement apparatus for ships.
The method of claim 8,
And a sealing air fan for supplying air into each of the cleaning liquid discharge lines,
Sulfur oxide abatement apparatus for ships.
The method of claim 6,
An exhaust gas outlet formed in the upper portion of the reactor body for discharging the purified exhaust gas; And
And an emergency damper formed on an upper portion of the reactor inlet,
The emergency damper is opened together with the exhaust gas outlet at the time of an emergency in which operation of the ship sulfuric acid reduction device is impossible or in a case of dry running which does not require purification of the exhaust gas to quickly exhaust the exhaust gas inside the reactor Features,
Sulfur oxide abatement apparatus for ships.
A first step of supplying exhaust gas generated from a main engine provided in a ship and at least one or more generator engines to a reactor through an exhaust pipe provided in each facility;
And a second step of discharging the exhaust gas supplied into the reactor through the inside of the reactor and through an exhaust gas outlet formed in the upper part of the reactor,
In the first step, a discharge pipe for discharging the exhaust gas from the main engine is directly connected to the side of the reactor, and a discharge pipe connected to the generator engine, which is driven at the time of maintenance of the ship among the generator engines, And a discharge line connected to a generator engine that is not driven during maintenance of a ship among the generator engines is directly connected to a side of the reactor.
Operation method of ship sulfuric acid reduction device.
The method of claim 11,
Wherein when the purification of the exhaust gas is required in the second step, the cleaning liquid is sprayed into the reactor and the cleaning liquid is not sprayed into the reactor when the exhaust gas is not required to be purified. ,
Operation method of ship sulfuric acid reduction device.

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