KR102283860B1 - ship - Google Patents

Abstract

The present invention relates to a ship, comprising: an engine casing provided on an upper deck for discharging exhaust of an engine for propulsion of a ship; a stack located above the engine casing; and a catalyst device for purifying the exhaust, wherein the catalyst device is provided behind the engine casing or the stack.

Description

ship {ship}

The present invention relates to a ship.

As environmental regulations are strengthened in recent years, the treatment of exhaust gas during ship operation becomes a problem. In particular, according to the Tier III standard applied from 2016, it is essential to install an eco-friendly device that can purify exhaust gas.

Devices for purifying exhaust gas include an exhaust gas recirculation system (EGR) that recirculates exhaust gas to an engine, and a selective catalytic reduction (SCR) device using a chemical reaction by a catalyst.

The exhaust gas recirculation system recirculates exhaust gas to the engine to reduce the combustion temperature of the engine, thereby suppressing the generation of nitrogen oxides. year is to be emitted.

In order to navigate a sea area subject to Tier III, it is necessary to add an eco-friendly device such as a denitrification device. In this case, since the existing hull structure needs to be extensively changed for the installation of the eco-friendly device, there is a problem that a huge cost is consumed.

The present invention was created to solve the problems of the prior art as described above, and an object of the present invention is to have a structure that can prepare for the installation of an eco-friendly device, so that even when an eco-friendly device is added, the man-hour and manufacturing cost can be reduced. to provide ships with

A ship according to an embodiment of the present invention, the engine casing provided on the upper deck to discharge the exhaust of the engine for ship propulsion; a stack located above the engine casing; and a catalyst device for purifying the exhaust, wherein the catalyst device is provided behind the engine casing or the stack.

Specifically, the catalyst device may be provided in the air based on the upper deck.

Specifically, it may further include a catalyst chamber provided to protrude rearward from the rear surface of the engine casing or the stack and accommodating the catalyst device.

Specifically, the catalyst chamber may have a lower surface floating upward from the upper deck.

Specifically, a hatch provided at the rear of the engine casing; and a rail on which a crane accessible to the hatch is installed.

Specifically, the rail may be provided below the catalyst device.

Specifically, the stack may have a rectangular or square shape on the back side.

Specifically, the stack may have a cross-sectional area of a flat cross-section smaller than that of the engine casing.

Specifically, the stack may be parallel to the front of the engine casing only the front.

The ship according to the present invention can effectively prepare for the application of Tier III regulations by improving the structure in order to easily implement the installation of the eco-friendly device in the future even if the eco-friendly device is not installed.

1 is a partial side cross-sectional view of a vessel according to an embodiment of the present invention;
2 is a side cross-sectional view of a ship according to an embodiment of the present invention.
3 and 4 are front cross-sectional views taken along line AA′ of FIG. 2 .
5 is a partial side cross-sectional view of a vessel according to an embodiment of the present invention;
6 is a partial side cross-sectional view of a ship according to another embodiment of the present invention.
7 is a partial front view of a ship according to another embodiment of the present invention.
8 is a partial plan view of a ship according to another embodiment of the present invention.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In the present specification, in adding reference numbers to the components of each drawing, it should be noted that only the same components are given the same number as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a partial side cross-sectional view of a ship according to an embodiment of the present invention, and FIG. 2 is a side cross-sectional view of a ship according to an embodiment of the present invention. 3 and 4 are side cross-sectional views of a ship according to an embodiment of the present invention, and FIG. 5 is a partial side cross-sectional view of a ship according to an embodiment of the present invention.

1 to 5 , a ship 1 according to an embodiment of the present invention includes an engine room 10 , a hold 20 , an engine casing 30 , a stack 32 , and a catalyst device 40 . includes

The engine room 10 accommodates the engine for propelling the ship 1 . The engine room 10 may be provided at the rear of the hull, and an engine control room (not shown) for controlling the engine may be provided in the engine room 10 .

The engine room 10 may be divided by a double bulkhead before and after the engine room 10 , and a hold 20 may be provided before and after the engine room 10 . However, the engine room 10 may have a step shape, and the step shape may appear at the front end and/or rear end of the engine room 10 . This is to secure the area of the hold 20 as much as possible.

When the engine provided in the engine room 10 rotates, the rotational force is transmitted to the propeller through the shaft, so that propulsion can be achieved. Alternatively, electric propulsion may be implemented as rotational force turns the generator.

An engine (eg, an engine for propulsion and/or an engine for power generation) provided in the engine room 10 generates exhaust gas during operation. At this time, the exhaust may be discharged to the outside through an exhaust pipe (not shown) in the engine casing 30 and the stack 32 . However, the exhaust contains various pollutants such as nitrogen oxides, and when the ship 1 according to the present invention is subjected to Tier III, purification of the exhaust is essential. Accordingly, the present invention may include the catalyst device 40 and the like.

An oil tank (not shown) may be provided in front of the engine room 10 . That is, an empty space may be formed between the engine room 10 and the hold 20 in front thereof by a double bulkhead, and in this case, the empty space may be used as an oil tank.

The hold 20 is provided in front of the engine room 10 and accommodates cargo. When the ship 1 of the present invention is a container ship, the hold 20 may have a form for accommodating the container. Alternatively, when the ship 1 of the present invention is a tanker carrying a fluid such as LNG or LPG, the hold 20 may be in the form of accommodating the tank therein.

Hereinafter, it is assumed that the ship 1 of the present invention is a container ship. However, it should be noted that even so, the vessel 1 of the present invention is not limited to a container vessel.

The hold 20 may be divided back and forth by a partition wall, and for example, a 9th hold 20 may be provided in front of the engine room 10 . At this time, the engine room 10 may have a step shape in which the front of the upper part is retreated from the front of the lower part as described above, and at least a portion of the 9th hold 20 may be provided on the upper surface of the lower part of the engine room 10 . .

The hold 20 is meant to encompass all spaces in which cargo is accommodated, and the space under the upper deck 50 as well as the space where the container is loaded from above the upper deck 50 is also referred to as hold 20 in this specification. can be referred to.

In this case, the hold 20 may also be provided at the rear of the engine room 10 . At the rear of the engine room 10, a rear peak tank 43 and a steering gear room (not shown) are provided in the lower portion of the upper deck 50, and the upper deck 50 is a space in which the container is loaded, the hold 20. can be provided. The hold 20 on the upper deck 50 may be in the form of exposing the container to the outside.

The engine casing 30 (Engine Casing) is provided on the upper deck 50 to discharge the exhaust of the engine. The engine casing 30 has an exhaust pipe (not shown) and the like therein, and can accommodate the heat recovery device 31 .

Exhaust generated during operation of the propulsion engine (and the engine for power generation, etc.) is transmitted to the engine casing 30 along the exhaust pipe. At this time, the exhaust may be discharged to the outside through the exhaust pipe of the stack 32 through the engine casing (30).

However, since exhaust is a material that contains a large amount of pollutants and has waste heat, the present invention may include a heat recovery device 31 and a catalyst device 40 to utilize the exhaust, which will be described later.

The heat recovery device 31 is provided in the engine casing 30 and utilizes waste heat of exhaust discharged from the engine. The heat recovery device 31 may be a Heat Recovery Steam Generator (HRSG), and may produce steam from waste heat and transmit it to a steam turbine to generate electricity.

Therefore, the high-temperature exhaust discharged from the engine is cooled through the heat recovery device 31 , and nitrogen oxides are removed by the catalyst device 40 before or after it, so that it can be discharged outside in a state suitable for exhaust regulation.

The stack 32 is located above the engine casing 30 . The stack 32 is a portion at which the end of the exhaust pipe is provided, and exhaust is discharged upward through the stack 32 . The stack 32 may have a relatively smaller flat cross-section than the engine casing 30, and an exhaust pipe (not shown) provided in the stack 32 communicates with the exhaust pipe of the engine casing 30 to receive exhaust. there is.

The size or height of the stack 32 may be variously determined depending on the ship type and engine specifications, but the stack 32 may have a trapezoidal shape when viewed from the front. In addition, the front of the stack 32 may be provided in parallel with the front of the engine casing 30 .

Since the flat cross-section of the stack 32 may be relatively small compared to the flat cross-section of the engine casing 30 , the remaining surfaces except for the front of the stack 32 may be located on the inside compared to the outer surface of the engine casing 30 .

The catalyst device 40 purifies the exhaust of the engine. The catalyst device 40 may be a selective catalytic reduction (SCR), and converts nitrogen oxides (NOx) mixed in the engine exhaust into harmless water and nitrogen molecules using a catalyst.

The catalyst device 40 may be provided in the catalyst device chamber 41 , and the catalyst device chamber 41 means a space in which the catalyst device 40 is provided. The vessel 1 according to the present invention may be a vessel 1 in which the catalyst device 40 is already installed, or a vessel 1 in which a catalyst chamber 41 is provided in preparation for the installation of the catalyst device 40 . there is.

In the former case, it corresponds to a ship directly subject to Tier III (1), and in the latter case, it corresponds to a ship (1) that was not subject to Tier III at the time of construction but is expected to be remodeled to enter the Tier III-applied sea area. .

Hereinafter, it is noted that the catalyst device 40 can be interpreted as being changed to the catalyst device chamber 41 which is a space for installing the catalyst device 40 . Of course, on the contrary, the catalyst chamber 41 may be interpreted as a catalyst device 40 .

Referring to FIG. 1 , the catalyst chamber 41 may be provided under the upper deck 50 . A heat recovery device 31 may be provided in the engine casing 30. As indicated by a dotted line in FIG. 1, the engine casing 30 is enlarged forward and the catalyst chamber 41 is moved to the heat recovery device 31. It can also be provided in front of

However, in this case, the area of a portion of the 9th hold 20 provided on the lower upper surface of the engine room 10 is inevitably reduced due to the expansion of the engine casing 30 . There is a problem in that this causes a decrease in cargo transport capacity.

Therefore, in this embodiment, the catalyst chamber 41 is provided under the upper deck 50 and the expansion of the engine casing 30 can be suppressed. In this case, the catalyst chamber 41 may be provided on the second deck 51 of the second deck 51 to the fourth deck 53 and the tank top 54 located under the upper deck 50, but , depending on the size of the catalyst device 40, the catalyst chamber 41 may be provided on the three-story deck 52.

The catalyst chamber 41 may be disposed adjacent to the ship side. That is, the catalyst chamber 41 may be provided on the ship side to prevent interference with the exhaust pipe. At this time, in order to install the catalyst device 40 in the catalyst device chamber 41 , at least a part of the side shell plate 21 may be cut, and the catalyst device 40 may be inserted into the catalyst device chamber 41 through the cut-out portion. can be accepted.

When the catalyst chamber 41 is provided on the two-story deck 51, the front and rear lengths of the catalyst chamber 41 may be relatively long compared to the vertical height. On the other hand, as shown in the drawing, the exhaust heat recovery device 31 may have a relatively small front and rear length compared to the vertical height.

The catalyst device 40 accommodated in the catalyst device chamber 41 may reduce nitrogen oxides in the exhaust using a catalyst such as urea water, and at this time, a catalyst tank 42 for storing the catalyst may be provided.

The catalyst tank 42 may be provided between the side shell plate 21 and the hold 20 (at least a part of the space occupied by the ballast tank (not shown)) as shown in FIG. 3 . The catalyst stored in the catalyst tank 42 may be urea water. In this case, when the temperature of the catalyst stored in the catalyst tank 42 rises to 40 degrees or more, a bad odor may occur, and there is a problem that the service life of the catalyst is rapidly reduced.

Accordingly, in the present invention, at least a part of the catalyst tank 42 is located below the waterline D (load waterline D) while the catalyst tank 42 is provided between the ship side shell plate 21 and the hold 20. can do. In this case, the catalyst tank 42 may allow the catalyst to be maintained at a preset temperature (for example, 40 degrees Celsius) or less by heat exchange with seawater.

That is, the catalyst stored in the catalyst tank 42 is in contact with the seawater with the side shell plate 21 interposed therebetween, so that it can be cooled by the temperature of the seawater. Therefore, even if the catalyst is urea water, the present invention can effectively store the catalyst.

In addition, when the catalyst tank 42 is provided between the hold 20 and the side shell plate 21, substantially no or minimal contact surfaces between the engine room 10 and the catalyst tank 42 are provided. Since the internal temperature of the engine room 10 may rise to 45 degrees or more, when the catalyst tank 42 comes into contact with the engine room 10 , the catalyst may be heated by internal heat of the engine room 10 . However, the present invention has the advantage that the catalyst in the catalyst tank 42 can be stably stored for a long time by providing the catalyst tank 42 at a position where the heat of the engine room 10 is not transmitted.

The catalyst tank 42 may be provided between the hold 20 and the side shell plate 21 as described above, and/or may be at least a part of the rear peak tank 43 shown in FIG. 2 . At this time, the catalyst tank 42 may utilize a portion of the rear peak tank 43 that is placed under the waterline (D).

Alternatively, the catalyst tank 42 may be provided between the ship bottom surface 55 and the hold 20 as shown in FIG. 4 . In this case, since the catalyst tank 42 is always in contact with seawater, the catalyst can maintain a low temperature state. And/or the catalyst tank 42 may be provided between the ship bottom surface 55 and the engine room 10 .

As described above, in this embodiment, the catalyst device 40 is provided below the upper deck 50 to secure the area of the hold 20 by not enlarging the size of the engine casing 30 and to the engine casing 30 . It is possible to prevent an increase in the wind load caused by the wind load, and also, by providing the catalyst device 40 in a position in contact with seawater, the catalyst can be stably stored at a low temperature.

6 is a partial side cross-sectional view of a ship according to another embodiment of the present invention, FIG. 7 is a partial front view of a ship according to another embodiment of the present invention, and FIG. 8 is a partial plan view of a ship according to another embodiment of the present invention am.

6 to 8 , in the vessel 1 according to another embodiment of the present invention, the position of the catalyst device 40 (or the catalyst chamber 41) may be different from that of the previous embodiment. In addition, parts omitted from description are replaced with descriptions in one embodiment.

Referring back to FIG. 5 , a hatch 11 for introducing various equipment into and out of the engine room 10 may be provided on the upper surface of the engine room 10 among the upper deck 50 , and the upper portion of the hatch 11 . A rail 33 on which a crane accessible to the hatch 11 is installed may be provided.

At this time, for the operation of the crane, the engine casing 30 (and the stack 32) and the hold 20 at the rear thereof may be spaced apart from each other, and the catalyst device 40 is provided close to the ship side in the second-floor deck 51 can be

However, due to the size of the catalyst device 40 or the arrangement to prevent interference with other devices, the catalyst device 40 may at least partially interfere with the hold 20 at the rear of the engine casing 30 . In this case, as the catalyst device 40 invades the hold 20 , the cargo transport capacity may be reduced.

Therefore, in this embodiment, a space spaced apart between the engine casing 30 and the hold 20 at the rear thereof can be utilized as a space for installing the catalyst device 40 . In this embodiment, the hatch 11 for the inlet and outlet of the engine room 10 and the rail 33 for installing the crane are maintained as they are, and the catalyst device 40 can be provided on the rail 33 .

To this end, the engine casing 30 or the stack 32 may have a shape protruding backward. The protruding portion may be the catalyst chamber 41 , and the lower surface of the catalyst chamber 41 may float upward from the upper deck 50 . This is to secure the working space of the crane.

Accordingly, the catalyst device 40 accommodated in the catalyst device chamber 41 may also be provided in the air based on the upper deck 50 , and the rail 33 may be provided below the catalyst device 40 .

However, as described above, the stack 32 may have a trapezoidal shape in which the left and right widths become narrower toward the top. In this case, the width of the catalyst chamber 41 may be greater than the width of the stack 32 . However, in this embodiment in which the catalyst device 40 is provided between the engine casing 30 and the hold 20, the shape of the stack 32 is improved so that the catalyst chamber 41 is located behind the stack 32, etc. It can be made stable.

To this end, the stack 32 may have a rectangular or square shape on the back side. As shown in FIGS. 7 and 8 , the left and right side surfaces of the stack 32 may be expanded left and right. However, the stack 32 may still have a cross-sectional area of a flat cross-section smaller than that of the engine casing 30, and at least one of the front or rear surfaces of the stack 32 may be provided in parallel with the front or rear surfaces of the engine casing 30. . For example, if only the front of the stack 32 is parallel to the front of the engine casing 30, the catalyst chamber 41 can be installed when the catalyst chamber 41 protrudes from the rear of the stack 32 to the rear. The front and rear width may be larger than the interval between the engine casing 30 and the hold 20 at the rear thereof.

As described above, in this embodiment, since the empty space behind the engine casing 30 is used as a space for the installation of the catalyst device 40, efficient arrangement is possible without harming the working space of the crane.

The catalyst device 40 described above may be replaced with the exhaust recirculation device 60 that recirculates the exhaust of the engine to the engine. Alternatively, the exhaust recirculation device 60 may be additionally provided in the engine casing 30 or in the engine room 10 in addition to the catalyst device 40 . That is, the catalyst device 40 and the exhaust recirculation device 60 may be expressed as an eco-friendly device encompassing the two.

When the exhaust recirculation device 60 is provided, a drain tank 61 for storing the fluid drained from the exhaust recirculation device 60 may be provided, and the location of the drain tank 61 is the catalyst tank 42 described above. may be determined by any one of the positions of

When the catalyst device 40 is replaced with the exhaust recirculation device 60 , the catalyst tank 42 may be replaced with the drain tank 61 . Alternatively, when the exhaust recirculation device 60 is added to the catalyst device 40 , the drain tank 61 may not overlap the catalyst tank 42 and may be provided at at least one of the positions described above.

Depending on the type of engine, the catalyst device 40 or the exhaust recirculation device 60 may be selectively used. For example, in the present invention, the exhaust recirculation device 60 is connected to a propulsion engine and the catalyst device 40 is connected to the engine for power generation. ), or the present invention may connect the catalyst device 40 to both the propulsion engine and the power generation engine.

In the former case, since the size of the catalyst tank 42 is smaller than that of the latter, the catalyst tank 42 may be provided between the bottom surface 55 and the hold 20, and in the latter case, the catalyst tank 42 is a side shell plate. It may be provided between the (21) and the hold (20). In addition, it goes without saying that the present invention may include all combinations of the above-described contents.

Although the present invention has been described in detail through specific examples, this is for the purpose of describing the present invention in detail, and the present invention is not limited thereto, and by those of ordinary skill in the art within the technical spirit of the present invention. It will be clear that the transformation or improvement is possible.

All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

1: Ship 10: Engine room
20: hold 30: engine casing
31: heat recovery device 32: stack
40: catalyst 41: catalyst chamber
42: catalyst tank 60: exhaust recirculation device
61: drain tank D: waterline (load waterline)

Claims (9)

an engine room provided at the rear of the hull and accommodating a ship propulsion engine;
an engine casing provided on the upper deck for discharging exhaust of an engine for propulsion of a ship;
a hold provided at the rear of the engine casing in the upper deck for accommodating cargo;
a stack located above the engine casing; and
a catalyst device for purifying the exhaust;
In the upper deck of the upper surface of the engine room at the rear of the engine casing and in front of the hold, a hatch for inflow and outflow of equipment into the engine room by a crane is provided,
The catalyst device is
It is installed in a space spaced apart from the engine casing and the hold, and is provided to float upward from the upper deck at the rear of the engine casing or the stack, between the upper deck and the catalyst device in the height direction. A ship characterized in that it secures. delete delete delete The method of claim 1,
and a rail on which the crane accessible to the hatch is mounted. According to claim 5, The rail,
A ship, characterized in that provided below the catalyst device. According to claim 1, wherein the stack,
A ship, characterized in that the back is rectangular or square shape. According to claim 1, wherein the stack,
A ship, characterized in that the cross-sectional area of the flat cross-section is smaller than that of the engine casing. According to claim 1, wherein the stack,
A ship, characterized in that only the front is parallel to the front of the engine casing.

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