KR20180046728A - Apparatus for emitting exhaust gas - Google Patents

Abstract

According to one embodiment of the present invention, provided is an exhaust gas discharge apparatus. The apparatus can comprise: at least one exhaust tube through which exhaust gas of a combustion engine can be supplied from top to bottom; a communicating tube connected to a lower portion of the exhaust tubes to discharge exhaust gas passing through the exhaust tubes to the outside; a first cleaning water injection nozzle installed in the exhaust tube to spray cleaning water; a second cleaning water injection nozzle installed in the communicating tube to spray the cleaning water; and a cleaning discharge tube formed in a lower portion of the communicating tube to discharge the cleaning water.

Description

[0001] Apparatus for emitting exhaust gas [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an exhaust gas discharging device, and more particularly, to an exhaust gas discharging device capable of collectively purifying various kinds of exhaust gas discharged from different combustion engines.

Generally, various engines installed on a ship generate power by burning fossil fuels. At this time, the exhaust gas generated in the combustion process of the fuel includes harmful substances such as SOx, NOx, and PM, It can cause pollution. For these reasons, environmental regulations for air pollution of vessels are being strengthened, and various processing devices are being applied to ships in order to satisfy various regulations.

In the environmental regulations on air pollution, regulations that specify the sulfur content in the exhaust gas emitted from the engine when operating and docking the marine emission control area (ECA) are less than 0.1% As a method for removal of cargo, ultra low sulfur fuel having a sulfur content of 0.1% or less may be used or a wet scrubber may be applied. However, since the super low sulfur oil is very expensive and the system such as the production facility is in short supply, a wet scrubber for removing sulfur oxides by gas-liquid contact with seawater, fresh water or an alkaline solution and exhaust gas is generally used.

However, in the conventional system using the wet scrubber, when various kinds of exhaust gases discharged from different engines are supplied to the scrubber, the reverse flow due to different inflow pressures is generated, have.

Korean Patent Publication No. 10-2016-0098448 2016.08.18

An object of the present invention is to provide an exhaust gas discharging device capable of collectively purifying various types of exhaust gas discharged from different combustion engines.

The technical objects of the present invention are not limited to the technical matters mentioned above, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an exhaust gas exhaust apparatus comprising: at least one exhaust pipe to which exhaust gas of a combustion engine is supplied from top to bottom; an exhaust pipe connected to a lower portion of the exhaust pipe, A first cleaning water injection nozzle provided inside the exhaust pipe for spraying the cleaning water; a second cleaning water injection nozzle provided inside the communication pipe for spraying the cleaning water; And a cleaning water discharge pipe formed at a lower portion to discharge the washing water.

The first cleansing water injection nozzle may be disposed above the connection passage connecting the exhaust pipe and the communication.

The first cleansing water injection nozzle can uniformly spray cleansing water over the entire transverse cross section of the inside of the exhaust pipe.

A plurality of the first cleaning water injection nozzles or the second cleaning water injection nozzles may be disposed so as to overlap with each other at different heights.

The exhaust pipe and the communication pipe are integrally connected to each other, and at least a part thereof is continuously refracted downward and upward to form a refraction part, and the washing water discharge pipe can be connected to the lower part of the refraction part.

The exhaust gas discharging device may further include a storage tank connected to the cleansing water discharge pipe and storing cleansing water discharged from the communication pipe, wherein the first cleansing water spraying nozzle and the second cleansing water spraying nozzle each have a storage It is connected to the tank and can receive the washing water.

The exhaust gas discharging device may further include a neutralizing agent supply unit connected to the storage tank to supply a neutralizing agent and a filter unit installed at a rear end of the storage tank to separate fine dust contained in the washing water.

According to the present invention, it is possible to remove the contaminants contained in the exhaust gas by supplying the cleansing water to the existing communication pipe instead of installing the wet scrubber. Therefore, it is possible to reduce the cost of installing the wet scrubber and to maximize the space utilization.

In addition, by providing the cleaning water injection nozzles in the plurality of exhaust pipes connected to the communication, it is possible to prevent backflow caused by different inflow pressures of the exhaust gas discharged from the different combustion engines.

1 is a block diagram schematically showing a configuration of an exhaust gas discharging apparatus according to an embodiment of the present invention.
Fig. 2 is a view schematically showing a state of communication with the exhaust pipe of Fig. 1. Fig.
Figs. 3 to 5 are operation diagrams for explaining the operation of the exhaust gas discharging device. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An exhaust gas discharging device according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5. FIG.

The exhaust gas discharging apparatus according to an embodiment of the present invention is an apparatus capable of discharging air suited to exhaust standards by reducing the concentration of various pollutants (nitrogen oxides, sulfur oxides, dust, etc.) contained in the exhaust gas. And can be used.

Instead of installing a wet scrubber, the exhaust gas discharging device can remove the contaminants contained in the exhaust gas by supplying cleaning water to the established communication pipe. Therefore, it is possible to reduce the cost of installing the wet scrubber and to maximize the space utilization. Further, the cleaning water injection nozzle is provided in each of a plurality of exhaust pipes connected to the communication, so that reverse flow of the exhaust gas discharged from different combustion engines due to different inflow pressures can be prevented.

Hereinafter, the exhaust gas discharging device 1 will be described in detail with reference to Figs. 1 and 2. Fig.

FIG. 1 is a block diagram schematically showing a configuration of an exhaust gas purifying apparatus according to an embodiment of the present invention, and FIG. 2 is a view schematically showing a state of communication with an exhaust pipe of FIG.

The exhaust gas exhausting apparatus 1 according to the present invention includes at least one exhaust pipe 10, a communication 20, a first cleaning water injection nozzle 30, a second cleaning water injection nozzle 40, And a water discharge pipe 50.

The exhaust pipe 10 is a pipe through which exhaust gas from a combustion engine (not shown) is supplied from top to bottom, at least one of which is connected to the communication 20 described later. The exhaust pipe 10 is directly connected to the exhaust port of the combustion engine and can be a passage through which the hot exhaust gas is directly moved or can pass through the various heat exchangers to recycle most of the exhaust heat and to transfer the remaining waste gas. Here, the combustion engine refers to an apparatus that generates various kinds of power required for a ship by burning fuel, and may be formed of, for example, a main engine, a generator, or the like. The exhaust pipe 10 can be connected to the exhaust ports of the plurality of combustion engines and can be guided so that the flow of the exhaust gas, which is refracted from the top to the bottom, is directed upward.

Generally, combustion engines generate power by burning fossil fuels, thereby generating exhaust gas resulting from combustion of fossil fuels. The generated exhaust gas contains a large amount of nitrogen oxides, sulfur oxides, fine dust, and the like, and is supplied to the communication pipe 20 through the exhaust pipe 10 connected to the exhaust port of the combustion engine.

The communication pipe 20 is connected to a lower portion of the exhaust pipe 10 and discharges the exhaust gas passing through the exhaust pipe 10 to the outside, and may be a normal communication funnel. 2, a plurality of exhaust pipes 10 may be connected to the communication pipe 20, and a plurality of exhaust pipes 10 may be radially arranged on the lower side of the communication pipe 20, have. At this time, the plurality of exhaust pipes 10 may be formed to have different diameters according to the capacity of the connected combustion engine. That is, the exhaust gas discharging device 1 according to the present invention has a structure in which the exhaust gas discharged from different combustion engines is collectively discharged through one communication 20. However, the exhaust pipe 10 and the communication pipe 20 are not necessarily formed. For example, the exhaust pipe 10 and the communication pipe 20 may be integrally connected to each other. When the exhaust pipe (10) and the communication pipe (20) are integrally connected, at least a part of the exhaust pipe (10) is continuously refracted downward and upward so as to form a refracting portion, thereby guiding the exhaust gas to flow quickly and smoothly.

The exhaust pipe 10 and the communication pipe 20 are provided with a first cleaning water injection nozzle 30 and a second cleaning water injection nozzle 40, respectively.

The first washing water spray nozzle 30 injects washing water, which is at least one of seawater or fresh water, or mixed water of seawater and fresh water, inside the exhaust pipe 10, and one end of the washing water injects a seawater supply pipe 140 or a fresh water supply pipe And the other end can be connected to the exhaust pipe 10. That is, the first washing water injection nozzle 30 selectively receives seawater and clear water and injects the water into the exhaust pipe 10.

The second washing water injection nozzle 40 injects washing water, which is at least one of seawater or fresh water, or mixed water of seawater and fresh water, inside the communication pipe 20, and one end of the washing water is connected to a seawater supply pipe 140 or a fresh water supply pipe And the other end can be connected to the communication 20. That is, the second washing water injection nozzle 40 selectively receives seawater and fresh water and injects them into the communication 20.

The process of injecting seawater mainly through the first washing water injection nozzle 30 and the second washing water spray nozzle 40 and injecting the seawater into the exhaust pipe 10 and the communication 20 is limited to that the washing water is seawater I will explain more emphatically.

The sea water supply pipe (140) is a pipe that receives and supplies seawater and can receive seawater from the sea. However, the present invention is not limited to the case where the sea water supply pipe 140 is supplied with the seawater from the sea, and the seawater stored in the tank may be supplied if necessary. A part of the seawater introduced through the seawater supply pipe 140 is injected into the exhaust pipe 10 through the first washing water injection nozzle 30 and the remaining part of the seawater is injected into the communication pipe 20 through the second washing water injection nozzle 40, .

The first cleaning water injection nozzle 30 is disposed above the connection passage to which the exhaust pipe 10 and the communication pipe 20 are connected and is branched into a plurality of portions so that the cleaning water can be sprayed in the form of fine particles. The first washing water injection nozzle 30 injects the washing water in the form of particulates in the upper part of the connecting passage through which the exhaust pipe 10 and the communication pipe 20 are connected to the exhaust pipe 10, Contaminants such as nitrogen oxides, sulfur oxides, and fine dusts contained in the cleaning water can be dissolved in the washing water and removed from the exhaust gas. Particularly, the first cleaning water injection nozzle 30 can uniformly spray the cleaning water over the entire transverse section of the inside of the exhaust pipe 10. Accordingly, the contact ratio between the exhaust gas and the washing water increases, so that contaminants can be efficiently removed. At the same time, the washing water sprayed from the first washing water spray nozzle 30 forms a water curtain, It is possible to prevent the exhaust gas from flowing backward by another inflow pressure. Further, since the injected cleansing water serves to lower the temperature of the exhaust gas, the contaminant removal efficiency in the communication 20 can be improved. A plurality of the first cleaning water jetting nozzles 30 may be arranged so as to overlap with each other at different heights. By arranging the plurality of first cleaning water injection nozzles 30 at different heights, it is possible to maximize the effect of removing pollutants and preventing the backflow of exhaust gas.

The second cleaning water injection nozzle 40 is disposed on the upper portion of the communication pipe 20, and is branched into a plurality of portions to spray the cleaning water in the form of fine particles. The second cleaning water injection nozzle 40 injects the washing water into the inside of the communication pipe 20 in the form of fine particles so that the contaminants contained in the exhaust gas flowing through the communication pipe 20 are dissolved in the washing water and further removed And the exhaust gas from which the pollutants have been removed can be discharged to the outside through the upper portion of the communication pipe 20. [ Since the exhaust gas discharged through the upper portion of the communication pipe 20 is in a state in which contaminants such as nitrogen oxides, sulfur oxides, and fine dusts are removed, the exhaust gas can meet the exhaust standards and can be released into the atmosphere. In addition, the second cleaning water injection nozzles 40 may be disposed so as to overlap with each other at a plurality of different heights, like the first cleaning water injection nozzles 30. By arranging the plurality of second cleaning water injection nozzles 40 at different heights, the contaminant removal effect inside the communication pipe 20 can be improved.

In addition, the liquid separator 21 may be installed inside the communication pipe 20. The droplet separator 21 is configured to condense the moisture particles contained in the exhaust gas in contact with the exhaust gas discharged to the communication 20 and may be installed at the upper end of the second cleaning water injection nozzle 40, . The droplet separator 21 is provided at the upper end of the second cleaning water injection nozzle 40 so that the water particles are removed from the exhaust gas containing the water particles in contact with the washing water, The water particles removed from the exhaust gas may be collected and recycled.

The cleaning water containing nitrogen oxides, sulfur oxides, fine dusts, etc. in contact with the exhaust gas containing the contaminants forms strongly acidic nitric acid and sulfuric acid and is discharged to the outside through the washing water discharge pipe (50). The washing water discharge pipe 50 is formed at a lower portion of the communication pipe 20 and collects the washing water sprayed to the exhaust pipe 10 and the communication pipe 20 and discharges the washing water to the outside. The washing water discharge pipe (50) can be prevented from flowing backward due to shaking of the ship such as sloshing or rolling when the pipeline is formed narrowly. As described above, when the exhaust pipe 10 and the communication pipe 20 are integrally connected to each other to form a refracting portion, the washing water discharge pipe 50 is connected to the lower portion of the refracting portion to discharge the washing water. Since the washing water discharge pipe 50 is connected to the lower portion of the refracting portion, the washing water can be easily discharged. A storage tank (60) is connected to the washing water discharge pipe (50).

The storage tank 60 temporarily stores the washing water discharged from the communication pipe 20 and includes a seawater supply pipe 140, a first washing water injection nozzle 30, a second washing water injection nozzle 40, The washing water discharge pipe 50 may be connected to the storage tank 60, respectively. That is, the washing water flowing through the sea water supply pipe 140 is supplied to the first washing water spray nozzle 30 and the second washing water spray nozzle 40 through the storage tank 60, 50 passes through the storage tank 60 and then moves to the filter unit 80 to be described later.

A neutralizing agent supply unit 70 for supplying a neutralizing agent is connected to one side of the storage tank 60 to neutralize the strong acid washing water discharged from the exhaust pipe 10 and the communication pipe 20. The neutralizing agent may be an alkaline solution, for example, sodium hydroxide (NaOH) or sodium hypochlorite (NaOCl), and the neutralizing agent supply unit 70 may be formed of a device for directly producing a neutralizing agent by electrolyzing seawater or the like, May be formed of a stored neutralizer tank. A sensor unit (not shown) may be installed on one side of the storage tank 60 so that the pH value included in the washing water can be grasped in real time. The neutralizing agent supplying unit 70 can adjust the supply amount of the neutralizing agent .

The filter unit 80 is installed at the rear end of the storage tank 60 to separate the fine dust, and may be formed of at least one of a centrifugal separator, a gravity separator, and a filter. That is, the neutralized washing water in the storage tank 60 is removed from the filter unit 80, the fine dust is removed, and the washing water containing the salt is supplied to the separate separator 90, . ≪ / RTI > The salt separated from the washing water can be stored in a separate salt storage tank 110. The cleansing water from which salts have been removed can be circulated through the circulation pipe 100 to the storage tank 60 or through the sea water discharge pipe 120 It can be discharged to sea. On the other hand, fine dust separated from the filter unit 80 can be stored in the sludge tank 130.

Hereinafter, with reference to Figs. 3 to 5, the operation of the exhaust emission apparatus 1 will be described in more detail.

Figs. 3 to 5 are operation diagrams for explaining the operation of the exhaust gas discharging device. Fig.

The exhaust gas discharging device 1 according to the present invention can remove the contaminants contained in the exhaust gas by supplying washing water to the existing communication pipe 20 instead of installing the wet scrubber. Therefore, it is possible to reduce the cost of installing the wet scrubber and to maximize the space utilization. In addition, by providing the first washing water injection nozzles 30 in the plurality of exhaust pipes 10 connected to the communication 20, it is possible to prevent reverse flow of the exhaust gas discharged from different combustion engines due to different inflow pressures have.

FIG. 3 is a view showing an open loop type operation in which seawater introduced into a seawater supply pipe is discharged to the outside after passing through an exhaust pipe, FIG. 4 is a view showing a state in which seawater introduced into a sea water supply pipe communicates with an exhaust pipe FIG. 5 is a view showing an operation of releasing the exhaust gas into the air without any additional treatment; FIG. 5 is a view showing a closed loop type operation in which the exhaust gas is circulated through the circulation pipe after passing through the exhaust pipe;

3, the seawater introduced through the seawater supply pipe 140 passes through the storage tank 60 and then flows through the first washing water injection nozzle 30 and the second washing water injection nozzle 40 To the exhaust pipe (10) and the communication pipe (20). The washing water supplied to the first washing water injection nozzle 30 is sprayed from the upper part to the lower part of the exhaust pipe 10 and the washing water supplied to the second washing water spray nozzle 40 is sprayed from the upper part of the communication pipe 20 As shown in Fig. The washing water is injected into the exhaust pipe 10 through the first washing water injection nozzle 30 so that the nitrogen oxide, the sulfur oxide, the fine dust, and the like contained in the exhaust gas can be removed first. Particularly, since the first rinse water injection nozzle 30 uniformly injects rinse water over the entire transverse cross section of the exhaust pipe 10, a water film is formed to prevent backflow of the exhaust gas according to different inflow pressures. Further, the washing water is injected into the communication pipe 20 through the second washing water injection nozzle 40, so that contaminants contained in the exhaust gas can be further removed. Through this process, the pollutants in the exhaust gas are removed, and the exhaust gas from which the pollutants are removed is discharged to the outside through the communication pipe 20.

The washing water injected into the exhaust pipe 10 joins the washing water injected into the communication pipe 20 and is discharged to the outside of the communication pipe 20 through the washing water discharge pipe 50. Since the cross section of the communicating tube 20 is gradually reduced toward the washing water discharge pipe 50, the washing water can be discharged smoothly without a separate apparatus. The washing water discharged into the washing water discharge pipe 50 passes through the storage tank 60 and the filter unit 80 in order. At this time, the neutralizing agent supply unit 70 can appropriately supply the neutralizing agent in accordance with the pH value of the washing water stored in the storage tank 60. The filter unit 80 separates the fine dust from the supplied washing water, and the fine dust is separated and the washing water containing the salt is supplied to the separator 90. The separator 90 separates the salt and the washing water, supplies the salt to the salt storage tank 110, and discharges the washing water containing the salt below the sea water discharge reference standard to the sea via the sea water discharge pipe 120. The fine dust separated from the filter unit 80 is supplied to the sludge tank 130.

4, the seawater introduced through the seawater supply pipe 140 is supplied to the exhaust pipe 10 and the communication pipe 20 through the first rinse water injection nozzle 30 and the second rinse water injection nozzle 40, respectively do. The washing water sprayed to the exhaust pipe 10 through the first washing water injection nozzle 30 is contacted with the exhaust gas in the exhaust pipe 10 to remove the contaminants primarily and the second washing water spray nozzle 40 The washing water injected into the communication pipe 20 through the exhaust pipe 10 further removes contaminants remaining in the exhaust gas flowing into the communication pipe 20 through the exhaust pipe 10. Thus, the exhaust gas is discharged through the communication 20 in a state in which the contaminants are removed.

The washing water injected into the exhaust pipe 10 is merged with the washing water sprayed into the communication pipe 20 and discharged through the washing water discharge pipe 50 in a state containing contaminants to be supplied to the storage tank 60 and the filter unit 80, Respectively. The filter unit 80 supplies cleansing water containing fine dust and containing salt to the separator 90 and cleansing water from which salt has been removed from the separator 90 is discharged to the storage tank 100 through the circulation pipe 100 60). 4, except that the washing water discharged through the washing water discharge pipe 50 is recycled through the circulation pipe 100 in such a state that the washing water is not discharged to the outside while being partially removed, .

The process of FIG. 4 may be operated when the seawater can not be discharged to the outside, such as when the discharge of seawater is restricted, and the processes of FIGS. 3 and 4 may be performed selectively or sequentially Can be operated.

5, when the exhaust gas flowing through the exhaust pipe 10 is not required to be subjected to any other treatment, the first cleaning water injection nozzle 30 and the second cleaning water injection nozzle 40 are closed, And the exhaust gas can be released into the atmosphere through the communication pipe 20 as it is.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: exhaust gas discharging device 10: exhaust pipe
20: communication 21: droplet separator
30: First cleaning water injection nozzle 40: Second cleaning water injection nozzle
50: rinsing water discharge pipe 60: storage tank
70: Neutralizing agent supply unit 80: Filter unit
90: Separator 100: Circulation tube
110: Salt storage tank 120: Sea water discharge pipe
130: sludge tank 140: sea water supply pipe

Claims (7)

At least one exhaust pipe from which the exhaust gas of the combustion engine is supplied from top to bottom;
A communication pipe connected to a lower portion of the exhaust pipe to exhaust the exhaust gas passing through the exhaust pipe to the outside;
A first cleaning water injection nozzle installed inside the exhaust pipe to spray cleaning water;
A second cleaning water spray nozzle provided inside the communication hole for spraying the cleaning water; And
And a cleaning water discharge pipe formed at a lower portion of the communication pipe to discharge the washing water. The exhaust gas discharging device according to claim 1, wherein the first cleaning water injection nozzle is disposed above a connection passage connected to the exhaust pipe and the communication. 3. The exhaust gas discharging device according to claim 2, wherein the first cleaning water injection nozzle injects cleaning water uniformly over the entire transverse section of the inside of the exhaust pipe. 2. The exhaust gas discharging device according to claim 1, wherein a plurality of the first cleaning water injection nozzles or the second cleaning water injection nozzles are disposed so as to overlap each other at different heights. [2] The apparatus of claim 1, wherein the exhaust pipe and the communication pipe are integrally connected to each other and at least a part of the exhaust pipe is continuously bent downward and upward to form a refracting portion,
And the washing water discharge pipe is connected to the lower portion of the refractory portion. 6. The washing machine according to claim 5, further comprising a storage tank connected to the washing water discharge pipe to store washing water discharged from the communication pipe,
Wherein the first cleaning water injection nozzle and the second cleaning water injection nozzle are respectively connected to the storage tank to receive cleaning water. 7. The apparatus of claim 6, further comprising: a neutralizer supplier connected to the storage tank for supplying the neutralizer;
And a filter unit disposed at a rear end of the storage tank for separating fine dust contained in the washing water.

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