KR20110129160A - Vessel - Google Patents

Abstract

PURPOSE: Since the nitrogen oxides and sulfur oxides being together removed and being exhausted, the atmosphere anti-pollution effect can be maximized. A plurality of engines is used, even in that case, after concentrating the ventilation gas in the chamber, contaminant is eliminated and structure can be simplified. CONSTITUTION: A vessel(10) comprises a hull(100), an engine room(110), and a purifying unit(200). The purifying unit comprises a exhaust gas chamber(230), a nitrogen oxides eliminating unit(210), a sulfur oxides eliminating unit(220), a funnel(150). The exhaust gas chamber concentrates the ventilation gas created from the engine. The nitrogen oxides eliminating unit eliminates the nitric oxide which is included in the exhaust gas while being connected to the exhaust gas chamber. The sulfur oxides eliminating unit eliminates the sulfur oxides which is included in the exhaust gas from which the nitrogen oxides is removed while being connected to the nitrogen oxide eliminating unit. The funnel discharges the exhaust gas passing through the sulfur oxides eliminating unit. One among the pipe interlinking the nitrogen oxides eliminating unit and the sulfur oxides eliminating unit and the funnel, an exhaust gas ventilation fan(250) is formed.

Description

Vessel {Vessel}

The present invention relates to a ship.

Exhaust gases containing nitrogen oxides (NOx) and sulfur oxides (SOx) from ship engines are drawing attention as a source of serious air pollution. Therefore, researches on technologies for removing nitrogen oxides and sulfur oxides contained in the exhaust gas have been actively conducted.

For example, selective catalytic reduction (SCR), selective non-catalytic reduction (SNCR), nitrogen oxide filters, storage and reduction (SR) to remove nitrogen oxides. And the like can be used.

In addition, in order to remove sulfur oxides, an adsorption removal method using a metal oxide, a catalytic hydrogenation removal method, a biological removal method, a seawater scrubber, and the like may be used.

Such a nitrogen oxide removal device and a sulfur oxide removal device may be mounted and used on an exhaust pipe disposed in a funnel of a ship.

However, the above conventional technology has the following problems.

Since the size of the funnel is limited, it is difficult to simultaneously install the nitrogen oxide removal device and the sulfur oxide removal device.

In addition, when the nitrogen oxide removal device and the sulfur oxide removal device are installed at the same time in each of the exhaust gas pipes extending from several engines, the volume becomes too large, so that it is difficult to remove both the nitrogen oxides and the sulfur oxides contained in the exhaust gas. have.

Embodiment of the present invention is to provide a vessel that can prevent air pollution.

The ship according to an embodiment of the present invention, the hull; An engine room provided in the hull and including a plurality of engines; And a purifying device provided to the hull and removing nitrogen oxides and sulfur oxides contained in the exhaust gas generated from the engine, wherein the purifying device comprises: an exhaust gas chamber for collecting the exhaust gas generated from the engine; A nitrogen oxide removal unit connected to the exhaust gas chamber and removing nitrogen oxide contained in the exhaust gas; And a sulfur oxide removal unit connected to the nitrogen oxide removal unit and removing sulfur oxides included in the exhaust gas from which nitrogen oxide is removed.

In addition, further comprising a funnel for discharging the exhaust gas passing through the sulfur oxide removal unit, at least one of the pipe connecting the nitrogen oxide removal unit and the sulfur oxide removal unit and the funnel is provided with an exhaust gas blowing fan. It can be characterized.

In another aspect, a ship according to an embodiment of the present invention, the hull; An engine room provided in the hull and including a plurality of engines; An exhaust gas chamber connected to the plurality of engines to collect exhaust gas; A pollutant removal unit connected to the exhaust gas chamber to remove nitrogen oxides and sulfur oxides; A funnel connected to the pollutant removal unit and configured to discharge exhaust gas; And pressure adjusting means disposed on a path of the exhaust gas from the plurality of engines to the funnel, and controlling the exhaust pressure of the exhaust gas.

In addition, the pollutant removal unit, nitrogen oxide removal unit for removing nitrogen oxides; And a sulfur oxide removing unit for removing sulfur oxides.

The nitrogen oxide removal unit may be a selective catalytic reduction device or a selective non-catalytic reduction device, and the sulfur oxide removal unit may be a scrubber.

In addition, the reducing agent supply device for injecting a reducing agent of the nitrogen oxide to the exhaust gas before the exhaust gas discharged from the engine enters the nitrogen oxide removal unit may be characterized in that it is provided.

In addition, the reducing agent supply device may be provided in the exhaust gas chamber.

In addition, the scrubber, the supply passage to which the absorbent liquid is supplied; And an injection unit provided in the supply passage and spraying the absorbent liquid downward.

In addition, the absorbent liquid may be characterized in that the sea water.

In addition, the nitrogen oxide removal unit is a selective catalytic reduction device, it may be characterized in that a temperature control device and a temperature sensor for controlling the temperature of the catalyst is provided inside or around the nitrogen oxide removal unit.

The temperature control device may include a cooling passage for cooling the nitrogen oxide removal unit, and the cooling passage may be supplied with an absorption liquid in which sulfur oxide is absorbed by the scrubber.

In another aspect, a ship according to an embodiment of the present invention, the hull including an engine room provided with a plurality of engines; An exhaust gas chamber for collecting the exhaust gas discharged from the engine; A selective catalytic reduction device connected to the exhaust gas chamber and removing nitrogen oxide contained in the exhaust gas; A temperature control device for controlling the temperature of the selective catalytic reduction device; And a scrubber connected to the selective catalytic reduction device to remove sulfur oxides contained in the exhaust gas.

In addition, the temperature control device may include a cooling passage for cooling the selective catalytic reduction apparatus, the cooling passage may be characterized in that the absorption liquid absorbing sulfur oxides in the sea water or the scrubber.

According to the ship according to the embodiment of the present invention as described above, since the exhaust gas is discharged after removing the nitrogen oxide and sulfur oxide in the purification device has an effect that can prevent the air pollution.

1 is a view showing the internal configuration of a ship according to a first embodiment of the present invention.
2 is a view showing a process of removing nitrogen oxides and sulfur oxides in the purification device of FIG.
3 is a view showing a process of removing nitrogen oxides and sulfur oxides in the purification apparatus of the ship according to a second embodiment of the present invention.
4 is a view showing a process of removing nitrogen oxides and sulfur oxides in the purification apparatus of the ship according to a third embodiment of the present invention.
5 is a view showing a process of removing nitrogen oxides and sulfur oxides in the purification apparatus of the ship according to a fourth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In addition, in describing the present invention, when it is determined that the detailed description of the related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a view showing the internal configuration of a ship according to a first embodiment of the present invention. 1, the ship 10 according to an embodiment of the present invention, the hull 100, the engine room 110 is provided in the hull 100 and a plurality of engines 120 are installed, the engine ( A purifier 200 may be included to remove contaminants contained in the exhaust gas generated from the 120.

The engine room 110 may be provided at the stern, and may be disposed close to the bottom of the engine so that the engine 120 may be connected to a propeller (not shown) generating thrust.

The engine 120 uses fossil fuels such as diesel and discharges exhaust gases including nitrogen oxides (NOx) and sulfur oxides (SOx).

The purification device 200 is a device for removing contaminants, particularly nitrogen oxides and sulfur oxides contained in the exhaust gas discharged from the engine 120.

In detail, the purification apparatus 200 includes a nitrogen oxide removal unit 210 for removing nitrogen oxides included in exhaust gas, a sulfur oxide removal unit 220 for removing sulfur oxides included in exhaust gas, and a plurality of engines ( An exhaust gas chamber 230 in which exhaust gases discharged from the 120 may be collected may be included.

The chamber 230 is connected to an exhaust gas discharge pipe 231 extending from the engine 120. That is, the exhaust gas discharge pipe 231 may be formed in a number corresponding to the number of the engine 120, the exhaust gas is introduced into the chamber 230 through the discharge pipe 231.

The exhaust gas collected in the chamber 230 is sent to the nitrogen oxide removal unit 210 or the sulfur oxide removal unit 220. Thus, by collecting the exhaust gas in the chamber 230, the treatment efficiency can be increased.

A connection pipe 240 through which exhaust gas is moved may be provided between the nitrogen oxide removal unit 210 and the sulfur oxide removal unit 220. That is, exhaust gas from which nitrogen oxide has been removed or exhaust gas from which sulfur oxide has been removed may flow through the connection pipe 240.

The nitrogen oxide removal unit 210 and the sulfur oxide removal unit 220 may be referred to as a contaminant removal unit as a component for removing nitrogen oxides and sulfur oxides, which are air pollutants.

As the nitrogen oxide removing unit 210, various known nitrogen oxide removing means may be used. For example, the nitrogen oxide removing unit 210 may be a selective catalytic reduction device or a selective non-catalytic reduction device. In this embodiment, it will be described by way of example that the selective catalytic reduction device is used as the nitrogen oxide removal unit 210. The nitrogen oxide contained in the exhaust gas may be mixed with a predetermined reducing agent and removed by passing through a catalyst.

As the sulfur oxide removing unit 220, various known sulfur oxide removing means may be used, and in this embodiment, a wet scrubber is used. Sulfur oxides contained in the exhaust gas can be removed by melting in water.

Details related to the process of removing nitrogen oxide and sulfur oxide contained in the exhaust gas while passing through the pollutant removal unit will be described later.

In this embodiment, the exhaust gas discharged from the chamber 230 passes through the sulfur oxide removal unit 220 after passing through the nitrogen oxide removal unit 210 as an example. That is, the exhaust gas discharged from the engine 120 collects in the chamber 230 and then passes through the nitrogen oxide removal unit 210, and then passes through the sulfur oxide removal unit 220.

When the selective catalytic reduction device is used as the nitrogen oxide removal unit 210 and the wet scrubber is used as the sulfur oxide removal unit 220 as described above, the reaction temperature in the nitrogen oxide removal unit 210 is the sulfur oxide. Since it is higher than the operating temperature of the removal unit 220, there is an advantage that it is possible to prevent ancillary energy consumption for heating the exhaust gas. However, the spirit of the present invention is not limited thereto, and the exhaust gas may pass through the nitrogen oxide removal unit 210 after passing through the sulfur oxide removal unit 220.

On the other hand, the exhaust gas passing through the pollutant removal unit and the nitrogen oxides and the sulfur oxides are removed may be discharged to the outside of the vessel 10 through the funnel 150.

In this case, the funnel 150 may be further provided with an exhaust gas blowing fan 250 that can adjust the pressure of the exhaust gas. In detail, in order for the engine 120 to operate normally, the discharge pressure of the exhaust gas must be maintained at a predetermined level. However, when the purification apparatus 200 is installed on the path through which the exhaust gas is discharged as in the embodiment of the present invention, the discharge pressure of the exhaust gas may be lowered due to the flow path resistance. Therefore, when the exhaust gas discharge pressure of the engine 120 is lowered, the blower fan 250 is rotated in one direction to increase the pressure, and when it is increased, the blower fan is rotated in the other direction to lower the pressure. Exhaust gas discharge pressure can be maintained at a constant level.

In addition, the blowing fan 250 may also be provided in a path connecting the sulfur oxide removing unit 220 and the funnel 150.

Here, the blower fan 250 may control the exhaust gas discharge pressure of the engine 120 and may be referred to as a pressure regulating means. As the pressure adjusting means, various pressure adjusting means such as a valve and an orifice may be used in addition to the blower fan 250.

Meanwhile, the purification apparatus 200 may be disposed above the engine room 110 and may be provided in a space independent of the engine room 110. Alternatively, the chamber 230 may be provided inside the engine room 110.

Hereinafter, the process of removing nitrogen oxides and sulfur oxides included in the exhaust gas from the purification apparatus 200 will be described.

2 is a view illustrating a process of removing nitrogen oxides and sulfur oxides in the purification apparatus of FIG. 1.

2, the exhaust gas discharged from the engine 120 is moved to the chamber 230 through the discharge pipe 231.

At this time, the discharge pipe 231 may be provided with a reducing agent supply device 233 for supplying a reducing agent for reducing the nitrogen oxides. The reducing agent supply device 233 may be provided close to the inlet of the chamber 230. In addition, the reducing agent supply device 233 may be provided inside the chamber 230 or may be provided between the chamber 230 and the nitrogen oxide removal unit 210. That is, the reducing agent supply device 233 supplies the reducing agent to the exhaust gas before the exhaust gas discharged from the engine 120 enters the nitrogen oxide removal unit 210.

As the reducing agent, ammonia, carbon monoxide, hydrocarbons, hydrogen sulfide, or the like may be used.

The exhaust gas collected in the chamber 230 is moved to the nitrogen oxide removal unit 210.

The nitrogen oxide removal unit 210 is provided with a catalyst 215 is provided in a material such as titanium, vanadium, the catalyst 215 has a variety of shapes, such as spherical, particulate, flat, tubular, rim, honeycomb type Can be formed.

The nitrogen oxide contained in the exhaust gas mixed with the reducing agent is reduced while passing through the catalyst 215, and nitrogen gas is generated in this process.

Exhaust gas from which nitrogen oxide has been removed by passing through the nitrogen oxide removal unit 210 is moved to the sulfur oxide removal unit 220 through the connection pipe 240.

The sulfur oxide removal unit 220 may include a supply passage 225 through which the absorbent liquid is supplied and a nozzle 226 provided to the supply passage 225 to spray the absorbent liquid.

As the absorbent liquid, seawater, alkaline aqueous solution, or the like may be used, and the nozzle 226 may be injected in a direction opposite to the direction in which the exhaust gas flows. The absorbent liquid comes in contact with the sulfur oxide contained in the exhaust gas to absorb the sulfur oxide.

Absorption liquid absorbing sulfur oxides may be discharged to the outside of the sulfur oxide removal unit 220 through the discharge passage 227, and is supplied to the supply passage 225 again after a predetermined neutralization treatment, the sulfur oxides The removal unit 220 may be circulated.

Exhaust gas from which sulfur oxides are removed through the sulfur oxide removal unit 220 is discharged to the outside of the vessel 10 through the funnel 150.

According to the ship 10 according to the embodiment of the present invention having the above configuration, since the pollutants contained in the exhaust gas discharged from the engine 120 is removed and discharged to the outside, it is possible to prevent air pollution It works.

In particular, since nitrogen oxides and sulfur oxides are removed and discharged together, the effect of preventing air pollution can be maximized.

In addition, even if the vessel 10 uses a plurality of engines, the structure may be simplified because contaminants are removed after collecting exhaust gas from the chamber 230.

In particular, conventionally, after removing the pollutant removal work performed in the exhaust gas discharge pipe connected to each engine inside the funnel 150 in a separate space, the exhaust gas is discharged to the funnel 150, thereby simplifying the structure. .

In addition, since the exhaust gas is supplied to the nitrogen oxide removal unit 210 after collecting the exhaust gas from the chamber 230, the structure of the nitrogen oxide removal unit 210 having a complicated configuration can be simplified.

In addition, since the exhaust gas is processed at once after collecting the exhaust gas from the chamber 230, there is an advantage that only one nitrogen oxide removal unit 210 and one sulfur oxide removal unit 220 need to be provided. The exhaust gas of can be processed more easily.

In addition, by supplying a reducing agent before the exhaust gas enters the nitrogen oxide removing unit 210, the exhaust gas and the reducing agent may be sufficiently mixed, thereby improving the nitrogen oxide removing efficiency.

In addition, by installing the blower fan 250 on a path through which the exhaust gas is discharged, it is possible to satisfy the exhaust gas pressure condition required by the engine 120.

Hereinafter, a ship according to a second embodiment of the present invention will be described with reference to the drawings. However, since the second embodiment has a difference in that a temperature adjusting device is further provided as compared with the first embodiment, the difference will be mainly described, and the same reference numerals and descriptions of the first embodiment will be used.

3 is a view showing a process of removing nitrogen oxides and sulfur oxides in the purification apparatus of the ship according to a second embodiment of the present invention.

Referring to FIG. 3, the nitrogen oxide removing unit 210 may be provided with a temperature control device 320 for controlling the temperature of the catalyst 215 or the nitrogen oxide removing unit 210. In addition, one side of the catalyst 215 may be provided with a temperature sensor 310 for measuring the temperature of the catalyst 215 or the exhaust gas passing through the catalyst 215.

In detail, the nitrogen oxide reduction reaction in the nitrogen oxide removal unit 210 may best occur when the temperature of the catalyst 215 is in a specific temperature band. For example, when the catalyst 215 is formed of a titanium oxide (TiO ₂ ) material, the nitrogen oxide reduction reaction may be most activated in the range of about 300 ° C. to 350 ° C.

However, the exhaust gas discharged from the engine 120 may be provided at a high temperature instantaneously, which may cause fatal damage to the catalyst 215.

Therefore, the temperature control device 320 is the catalyst 215 or the nitrogen oxide agent according to the temperature value of the catalyst 215 or the exhaust gas passing through the catalyst 215 detected by the temperature sensor 310 Adjust the temperature of reject 210.

In detail, the temperature control device 320 may include a refrigeration cycle (not shown) including a compressor, a condenser, an expansion valve, an evaporator, etc., and the evaporator includes the catalyst 215 or the nitrogen oxide removing unit 210. It may be disposed in the vicinity of the to cool the catalyst 215 or the exhaust gas. Alternatively, the temperature control device 320 includes a cooling passage (not shown) through which a predetermined coolant flows, and the cooling passage is formed to surround the catalyst 215 or the nitrogen oxide removing unit 210. Can be. In this case, the cooling water provided to the cooling passage may be sea water. Since the temperature of the sea water is about 20 ° C., heat can be sufficiently taken from the high temperature catalyst 215 or the exhaust gas.

Alternatively, the temperature control device 320 may include a heater (not shown) capable of applying heat to the catalyst 215 or the exhaust gas when the temperature of the catalyst 215 or the exhaust gas is low.

In this way, by adjusting the temperature of the catalyst 215 or the nitrogen oxide removal unit 210 with the temperature control device 320 it can be made to efficiently remove the nitrogen oxides.

Hereinafter, a ship according to a third embodiment of the present invention will be described with reference to the drawings. However, since the third embodiment has a difference in that the suction liquid is provided as cooling water, compared to the second embodiment, the description will be mainly focused on the difference, and the description and reference numerals of the second embodiment are used for the same parts.

4 is a view showing a process of removing nitrogen oxides and sulfur oxides in the purification apparatus of the ship according to a third embodiment of the present invention.

Referring to FIG. 4, the temperature control device 340 includes a cooling passage (not shown) capable of cooling the catalyst 215 or the exhaust gas, and the cooling passage includes the catalyst 215 or the nitrogen oxide agent. It may be formed to surround the reject 210.

A bypass extending from the sulfur oxide removing unit 220 and extending from the discharge passage 227 to the cooling passage of the temperature control device 340 in the discharge passage 227 through which the suction liquid is discharged. The flow path 229 may be connected. A three-way valve 228 is provided at the intersection of the bypass passage 229 and the discharge passage 227 to selectively adjust the direction of the suction liquid.

The suction liquid supplied through the bypass passage 229 may flow as the cooling passage and function as a cooling water.

The suction liquid passing through the temperature control device 340 may join the original discharge passage 227 through the discharge passage 241.

Hereinafter, a ship according to a fourth embodiment of the present invention will be described with reference to the drawings. However, since the fourth embodiment has a difference in the position of the reducing agent supplying device and the point in which the fan is further provided compared with the first embodiment, the difference will be mainly described. To use.

5 is a view showing a process of removing nitrogen oxides and sulfur oxides in the purification apparatus of the ship according to a fourth embodiment of the present invention.

Referring to FIG. 5, a reducing agent supply device 235 for supplying a reducing agent for reducing nitrogen oxide contained in exhaust gas may be provided between a pipe connecting the chamber 230 and the nitrogen oxide removing unit 210. Can be.

In this case, since the reducing agent is injected into the exhaust gas collected in the chamber 230, only one reducing agent supply device 235 may be configured, and thus the structure may be simplified. In addition, since the reducing agent is injected into the entire exhaust gas in one pipe, the reducing agent may be reliably mixed with the exhaust gas.

In addition, the connection pipe 240 may be further provided with a blowing fan 260 for adjusting the pressure of the exhaust gas discharged from the engine 120. In this case, since the blowing force can be applied at a position closer to the exhaust gas discharge port (not shown) of the engine 120, the pressure can be easily adjusted.

While the present invention has been described in connection with certain embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Those skilled in the art can easily change the material, size, etc. of each component according to the application field, and can be combined / substituted the disclosed embodiments to implement a pattern of a timeless shape, but this also does not depart from the scope of the present invention will be. It will be apparent to those skilled in the art that various changes and modifications may be readily made without departing from the spirit and scope of the invention as defined by the appended claims.

10 ship 100 ship hull
110: engine room 120: engine
150: funnel 200: purification device
210: nitrogen oxide removal unit 215: catalyst
220: sulfur oxide removal unit 230: exhaust gas chamber
231: exhaust gas discharge pipe 233 (235): reducing agent supply device
240: connection piping 250 (260): blowing fan
310: temperature sensor 320 (340): temperature control device

Claims (13)

hull;
An engine room provided in the hull and including a plurality of engines; And
A purifying apparatus provided to the hull and removing nitrogen oxides and sulfur oxides contained in the exhaust gas generated from the engine,
In the purification device,
An exhaust gas chamber for collecting exhaust gases generated from the engine;
A nitrogen oxide removal unit connected to the exhaust gas chamber and removing nitrogen oxide contained in the exhaust gas; And
And a sulfur oxide removal unit connected to the nitrogen oxide removal unit to remove sulfur oxides contained in the exhaust gas from which nitrogen oxide has been removed. The method of claim 1,
Further comprising a funnel for discharging the exhaust gas passing through the sulfur oxide removal unit,
At least one of the pipe connecting the nitrogen oxide removal unit and the sulfur oxide removal unit and the funnel is provided with an exhaust gas blowing fan. hull;
An engine room provided in the hull and including a plurality of engines;
An exhaust gas chamber connected to the plurality of engines to collect exhaust gas;
A pollutant removal unit connected to the exhaust gas chamber to remove nitrogen oxides and sulfur oxides;
A funnel connected to the pollutant removal unit and configured to discharge exhaust gas; And
And a pressure regulating means disposed on a path of the exhaust gas from the plurality of engines to the funnel, the pressure adjusting means for regulating the exhaust pressure of the exhaust gas. The method of claim 3, wherein
The pollutant removal unit,
A nitrogen oxide removing unit for removing nitrogen oxides; And
Ship comprising a sulfur oxide removal unit for removing sulfur oxides. The method according to claim 1 or 3,
The nitrogen oxide removal unit is a selective catalytic reduction device or a selective non-catalytic reduction device,
The sulfur oxide removal unit is characterized in that the scrubber. The method of claim 5, wherein
And a reducing agent supply device for injecting a reducing agent of nitrogen oxides into the exhaust gas before the exhaust gas discharged from the engine enters the nitrogen oxide removing unit. The method according to claim 6,
And the reducing agent supply device is provided in the exhaust gas chamber. The method of claim 5, wherein
In the scrubber,
Supply flow path to which the absorbing liquid is supplied; And
The ship, characterized in that provided in the supply passage and includes an injection unit for injecting the absorption liquid downward. The method of claim 8,
The absorbing liquid is a ship, characterized in that the sea water. The method of claim 5, wherein
The nitrogen oxide removal unit is a selective catalytic reduction device,
Ships characterized in that the temperature control device and a temperature sensor for controlling the temperature of the catalyst is provided inside or around the nitrogen oxide removal unit. The method of claim 10,
In the temperature control device,
A cooling passage for cooling the nitrogen oxide removal unit is included,
The cooling flow path is a vessel characterized in that the absorption liquid absorbed sulfur oxides in the scrubber is supplied. A hull including an engine room provided with a plurality of engines;
An exhaust gas chamber for collecting the exhaust gas discharged from the engine;
A selective catalytic reduction device connected to the exhaust gas chamber and removing nitrogen oxide contained in the exhaust gas;
A temperature control device for controlling the temperature of the selective catalytic reduction device; And
And a scrubber connected to the selective catalytic reduction device to remove sulfur oxides contained in the exhaust gas. The method of claim 12,
The temperature control device includes a cooling passage for cooling the selective catalytic reduction device,
The cooling passage is a vessel characterized in that the absorption liquid absorbed sulfur oxides from the sea water or the scrubber.

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