KR102605024B1 - Silencer with decontamination function - Google Patents

Abstract

According to an embodiment of the present invention, a silencer having a contaminant removal function is provided.
A silencer with a pollutant removal function according to an embodiment of the present invention includes an inlet pipe through which exhaust gas flows, a centrifugal accelerator connected to the inlet pipe and installed with acceleration blades to rotate and accelerate the exhaust gas, and a centrifugal accelerator. It may include a discharge pipe that is connected to and discharges exhaust gas, a resonance pipe that forms a resonance space outside the discharge pipe and surrounds the discharge pipe, and a resonance hole in which at least a portion of the discharge pipe is open and communicates with the resonance pipe.

Description

Silencer with decontamination function}

The present invention relates to a silencer with a pollutant removal function, and more specifically, to a silencer with a pollutant removal function that can reduce the flow noise of exhaust gas while removing sulfur oxides contained in exhaust gas.

In general, various engines installed on ships generate power by burning fuel, and the exhaust gases generated during the combustion process contain flammable residues and harmful substances such as nitrogen oxides (NOx) and sulfur oxides (SOx). I'm doing it. Exhaust gas generated from the engine is discharged to the outside through the exhaust pipe, and a silencer is installed in the exhaust pipe to reduce noise caused by the flow of exhaust gas. A spark arrestor in the shape of a cone or spiral vane is installed on the exhaust pipe in front of the silencer. The spark arrestor generates centrifugal force in the exhaust gas and collects large-sized flammable residues, allowing the flammable residues to pass through the discharge port of the exhaust pipe. Prevents discharge to the outside. In addition, on the exhaust pipe in front of the silencer, there is a drum to periodically scrape off soot, an economizer to recover waste heat from exhaust gas, a Selective Catalytic Reduction Reactor (SCR) to remove nitrogen oxides, and a system to remove sulfur oxides. A wet scrubber is installed for this purpose.

As such, conventionally, silencers, spark arresters, drums, economizers, selective catalytic reduction reactors, wet scrubbers, etc. are installed on the exhaust pipe, resulting in the problem of space shortage.

Accordingly, there is a need for a device that can eliminate the problem of insufficient space in the exhaust pipe by removing sulfur oxides contained in the exhaust gas and reducing flow noise.

Republic of Korea Patent No. 10-1030440 (2011. 04. 14.)

The technical problem to be achieved by the present invention is to provide a silencer with a pollutant removal function that can reduce the flow noise of exhaust gas while removing sulfur oxides contained in exhaust gas.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

A silencer with a pollutant removal function according to an embodiment of the present invention for achieving the above technical problem includes an inlet pipe through which exhaust gas flows, an accelerator blade connected to the inlet pipe, and an accelerator blade installed to rotate and accelerate the exhaust gas. A centrifugal accelerator, a discharge pipe connected to the centrifugal accelerator to discharge the exhaust gas, a resonance pipe forming a resonance space outside the discharge pipe and surrounding the discharge pipe, and at least a portion of the discharge pipe is opened to discharge the exhaust gas. It includes a resonance hole that communicates with.

The silencer having the function of removing contaminants may further include a cleaning liquid spraying unit disposed in front of the centrifugal accelerator and spraying a cleaning liquid into the inflow pipe through which the exhaust gas passes.

The inlet pipe, the cleaning liquid injection unit, the centrifugal accelerator, and the discharge pipe may be sequentially arranged in a vertical direction.

The resonance hole is formed at a higher position than the lower end of the resonance pipe, and the silencer with the contaminant removal function may further include a drain pipe through which the cleaning liquid is drained at the lower end of the resonance pipe.

A plurality of resonance pipes may be arranged in multiple stages in a direction perpendicular to the discharge pipe.

The resonance hole may be opened in a ring shape along the circumference of the discharge pipe.

According to the present invention, it is possible to reduce noise in the duct due to the flow of exhaust gas while removing sulfur oxides contained in the exhaust gas. Therefore, there is no need to install a separate desulfurization facility on the exhaust pipe, thereby solving the space shortage problem.

Figure 1 is a perspective view showing a silencer with a pollutant removal function according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing the silencer having a pollutant removal function of FIG. 1 cut in the longitudinal direction.
Figure 3 is an operational diagram for explaining the operation of a silencer with a pollutant removal function.
Figure 4 is an operational diagram for explaining the operation of a silencer with a pollutant removal function according to another embodiment of the present invention.
Figure 5 is an operational diagram for explaining the operation of a silencer with a pollutant removal function according to another embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, with reference to FIGS. 1 to 3, the silencer 1 having a pollutant removal function according to an embodiment of the present invention will be described in detail.

Figure 1 is a perspective view showing a silencer with a pollutant removal function according to an embodiment of the present invention.

The silencer (1) with a pollutant removal function according to an embodiment of the present invention is a device for reducing noise in a duct through which fluid flows, for example, on an exhaust pipe that discharges exhaust gas generated from a combustion engine to the outside. can be installed in

The silencer 1, which has a pollutant removal function, can reduce noise in the duct due to the flow of exhaust gas while removing sulfur oxides contained in the exhaust gas. Therefore, there is no need to install a separate desulfurization facility on the exhaust pipe, so the problem of space shortage can be solved.

Hereinafter, with reference to FIG. 2, the silencer 1 having a pollutant removal function will be described in detail.

FIG. 2 is a cross-sectional view showing the silencer having a pollutant removal function of FIG. 1 cut in the longitudinal direction.

The silencer (1) with a pollutant removal function according to the present invention includes an inlet pipe (10), a cleaning liquid injection unit (20), a centrifugal acceleration unit (30), an discharge pipe (40), a resonance pipe (50), and a resonance hole (60).

The inlet pipe 10 is a pipe through which exhaust gas flows, and is arranged upright in the vertically extending section of the exhaust pipe, with its lower end connected to the exhaust pipe. Combustion engines usually burn fossil fuels to generate various types of power needed for ships, and thus produce exhaust gases due to the combustion of fossil fuels. The exhaust gas generated from the combustion engine contains flammable residues such as soot and harmful substances such as sulfur oxides (SOx), so it is necessary to remove them. A cleaning liquid injection unit 20 is installed in the inlet pipe 10 to remove flammable residues and sulfur oxides.

The cleaning liquid injection unit 20 sprays the cleaning liquid into the inlet pipe 10 through which the exhaust gas passes, and can be selectively operated. The cleaning liquid injection unit 20 includes a cleaning liquid tank 20a surrounding the inlet pipe 10, and a cleaning liquid supply pipe 20b that supplies a cleaning liquid, which is at least one of seawater, fresh water, and a mixture of seawater and fresh water, to the cleaning liquid tank 20a. ), and at least one spray nozzle 20c that sprays the cleaning liquid stored in the cleaning liquid tank 20b into the inlet pipe 10. The spray nozzle 20c may spray the cleaning liquid in a direction perpendicular to the flow direction of the exhaust gas, and a plurality of the spray nozzles 20c may be arranged in a ring shape along the circumference of the inlet pipe 10. As the cleaning liquid spray unit 20 sprays the cleaning liquid into the inflow pipe 10, flammable residues and sulfur oxides contained in the exhaust gas are mixed and dissolved in the cleaning liquid, and are easily removed from the exhaust gas in the centrifugal acceleration unit 30, which will be described later. can be removed However, the cleaning liquid spraying unit 20 is not limited to including the cleaning liquid tank 20a, the cleaning liquid supply pipe 20b, and the spray nozzle 20c. For example, the cleaning liquid spraying unit 20 is a typical wet type. It may be formed in the form of a scrubber (wet scrubber). When the cleaning liquid spray unit 20 is formed in the form of a wet scrubber, the centrifugal accelerator 30, the discharge pipe 40, and the resonance pipe 50, which will be described later, may be connected to the top of the scrubber. The exhaust gas in contact with the cleaning liquid moves to the centrifugal accelerator (30).

The centrifugal acceleration unit 30 is equipped with acceleration blades to rotate and accelerate the exhaust gas, and is connected to the inlet pipe 10. The accelerating blade may rotate to accelerate the exhaust gas, or it may rotate and accelerate the exhaust gas in a fixed state. In the drawing, a single centrifugal accelerator 30 formed in the form of a propeller is shown as installed inside the inlet pipe 10, but it is not limited to this, and the shape, number and position of the centrifugal accelerator 30 can be modified in various ways. You can. For example, the centrifugal accelerator 30 may be installed outside the inlet pipe 10, and if necessary, a plurality of centrifugal accelerators 30 may be arranged in a row along the flow direction of the exhaust gas. Additionally, the centrifugal accelerator 30 may be composed of a cylindrical body and a blade coupled to the outside of the body in a spiral shape. As the centrifugal accelerator 30 rotates and accelerates the exhaust gas, moisture particles that have become heavier due to the mixing and dissolution of flammable residues and sulfur oxides can be separated from the exhaust gas by centrifugal force. If the cleaning liquid spray unit 20 does not operate and the cleaning liquid is not sprayed into the exhaust gas, relatively heavy and large-particle flammable residues and sulfur oxides may be separated from the exhaust gas by centrifugal force. The exhaust gas from which the flammable residues and sulfur oxides are separated moves to the discharge pipe (40).

The discharge pipe 40 discharges exhaust gas in contact with the cleaning liquid to the outside and is connected to the centrifugal accelerator 30. That is, the inlet pipe 10, the cleaning liquid injection unit 20, the centrifugal acceleration unit 30, and the discharge pipe 40 are sequentially arranged in the vertical direction. The exhaust gas from which the flammable residues and sulfur oxides are separated in the centrifugal acceleration unit 30 may be discharged directly to the outside through the discharge pipe 40 or may be discharged to the outside after going through a separate treatment process. At least a portion of the discharge pipe 40 includes a sound-absorbing member, so that noise caused by the flow of exhaust gas inside the discharge pipe 40 can be reduced.

Meanwhile, a resonance pipe 50 is disposed outside the discharge pipe 40. The resonance pipe 50 forms a resonance space 50a outside the discharge pipe 40 to reduce noise caused by the flow of exhaust gas, and can be arranged to surround the discharge pipe 40. That is, the noise generated in the discharge pipe 40 is reduced primarily by the sound-absorbing member and secondarily by the resonance pipe 50. The resonance pipe 50 may communicate with the discharge pipe 40 through the resonance hole 60.

The resonance hole 60 may be formed by opening at least a portion of the discharge pipe 40 to communicate with the resonance pipe 50 and penetrating the discharge pipe 40 in the radial direction of the discharge pipe 40 . The resonance hole 60 may be formed at a higher position than the lower end of the resonance pipe 50, and a plurality of resonance holes may be opened in a ring shape along the circumference of the discharge pipe 40. As the discharge pipe 40 and the resonance pipe 50 communicate with each other through the resonance hole 60, noise of a specific frequency generated when the exhaust gas flows through the discharge pipe 40 is transmitted through the resonance hole 60 to the resonance space ( 50a), and at this time, the air in the resonance hole 60 vibrates while rubbing against the inner wall of the resonance hole 60, so some of the sound energy is converted into heat energy, and noise can be reduced. In addition, flammable residues and sulfur oxides separated from the exhaust gas by rotational acceleration in the centrifugal accelerator 30, and moisture particles heavier than the exhaust gas can be collected in the resonance space 50a, so that pollutants and moisture particles are discharged from the exhaust pipe ( 40) can be prevented from being discharged. In the drawing, the resonance pipe 50 is shown as being formed as a single stage on the outside of the discharge pipe 40 of the resonance pipe 50, but it is not limited to this, and if necessary, a plurality of resonance pipes 50 may be formed in the discharge pipe 40. ) may be arranged in multiple stages on the outside of the.

A drain pipe 70 for draining the cleaning liquid may be connected to the lower end of the resonance pipe 50. The drain pipe 70 is for draining the cleaning liquid that has moved to the resonance space 50a through the discharge pipe 40 and the resonance hole 60, and may be connected to the lower end of the resonance pipe 50. That is, the flammable residues, sulfur oxides, and moisture particles that are rotationally accelerated in the centrifugal accelerator 30 and collected in the resonance space 50a are discharged through the drain pipe 70 and undergo a series of water treatment processes.

Hereinafter, with reference to FIG. 3, the operation of the silencer 1 having a contaminant removal function will be described in more detail.

Figure 3 is an operational diagram for explaining the operation of a silencer with a pollutant removal function.

The silencer 1 with a pollutant removal function according to the present invention can reduce noise in the duct due to the flow of exhaust gas while removing sulfur oxides contained in exhaust gas. Therefore, there is no need to install a separate desulfurization facility on the exhaust pipe, thereby solving the space shortage problem.

The exhaust gas flowing into the inlet pipe 10 comes into contact with the cleaning liquid sprayed from the cleaning liquid spraying unit 20 and moves to the centrifugal acceleration unit 30. The centrifugal accelerator 30 rotates and accelerates the exhaust gas in contact with the cleaning liquid. As a result, moisture particles that have become heavy due to the mixing and dissolution of flammable residues and sulfur oxides are separated from the exhaust gas by centrifugal force. Flammable residues, sulfur oxides, and moisture particles heavier than the exhaust gas separated from the exhaust gas are collected in the resonance space (50a) through the resonance hole (60) and discharged through the drain pipe (70) connected to the resonance space (50a). It goes through a series of water treatment processes.

The exhaust gas from which flammable residues, sulfur oxides, and moisture particles are separated is discharged to the outside through the discharge pipe (40). Since the resonance pipe 50 is disposed on the outside of the discharge pipe 40 and communicates with the discharge pipe 40 through the resonance hole 60, noise due to the flow of exhaust gas can be reduced.

Hereinafter, with reference to FIG. 4, a silencer 1a having a pollutant removal function according to another embodiment of the present invention will be described in detail.

Figure 4 is an operational diagram for explaining the operation of a silencer with a pollutant removal function according to another embodiment of the present invention.

In the silencer (1a) having a pollutant removal function according to another embodiment of the present invention, a plurality of resonance pipes (50) are arranged in multiple stages in a direction perpendicular to the discharge pipe (40). A silencer (1a) with a pollutant removal function according to another embodiment of the present invention is substantially the same as the above-described embodiment, except that a plurality of resonance pipes (50) are arranged in multiple stages in the vertical direction to the discharge pipe (40). do. Therefore, this will be mainly explained, but unless otherwise stated, the description of the remaining components will be replaced by the above-mentioned details.

A plurality of resonance pipes 50 may be arranged in multiple stages in a direction perpendicular to the discharge pipe 40. At this time, a plurality of resonance holes 60 connecting each resonance pipe 50 and the discharge pipe 40 are discharge pipes ( 40) may be opened in a vertical direction. Additionally, each resonance pipe 50 may have a drain pipe 70 connected to its lower end. By arranging a plurality of resonance pipes 50 in multiple stages perpendicular to the discharge pipe 40, the noise reduction effect due to the flow of exhaust gas can be increased. In particular, when the resonance holes 60 communicating with each resonance pipe 50 and the discharge pipe 40 are formed to have different sizes, noise of various frequencies can be reduced and the noise reduction effect can be further increased. However, the sizes of the resonance holes 60 communicating with each resonance pipe 50 and the discharge pipe 40 are not limited to being formed differently, and if necessary, the plurality of resonance holes 60 are of different sizes. It may also be formed the same way.

Hereinafter, with reference to FIG. 5, a silencer 1b having a pollutant removal function according to another embodiment of the present invention will be described in detail.

Figure 5 is an operational diagram for explaining the operation of a silencer with a pollutant removal function according to another embodiment of the present invention.

A silencer (1b) with a contaminant removal function according to another embodiment of the present invention includes a centrifugal accelerator (30) with a cylindrical body (31) and a blade (32) formed in a spiral shape on the outside of the body (31). ). A silencer (1b) with a contaminant removal function according to another embodiment of the present invention includes a centrifugal accelerator (30) with a cylindrical body (31) and a blade (32) formed in a spiral shape on the outside of the body (31). ) is substantially the same as the above-described embodiment, except that it consists of Therefore, this will be mainly explained, but unless otherwise stated, the description of the remaining components will be replaced by the above-mentioned details.

The centrifugal accelerator 30 is connected to the inlet pipe 10 to rotate and accelerate the exhaust gas, and consists of a body 31 and a blade 32. The body 31 is a cylindrical member and is fixedly installed inside or outside the inflow pipe 10 in the longitudinal direction. The body 31 is installed upright by at least one connecting member 33, and the connecting member 33 may be coupled to the outer peripheral surface of the body 31 in a horizontal direction. The blade 32 is spirally attached to the outside of the body 31 and can induce rotational acceleration of the exhaust gas. That is, the exhaust gas flowing into the inlet pipe 10 flows along the blade 32 and is rotationally accelerated. As the centrifugal accelerator 30 consists of a body 31 and a blade 32, the moisture particles that have become heavier due to the mixing and dissolution of flammable residues and sulfur oxides move along the blade 32 and are easily moved toward the blocking portion 41. can be guided.

Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. You will be able to understand it. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

1, 1a, 1b: Silencer with pollutant removal function
10: Inlet pipe 20: Cleaning liquid spray unit
20a: Cleaning liquid tank 20b: Cleaning liquid supply pipe
20c: spray nozzle 30: centrifugal accelerator
31: body 32: blade
33: connecting member 40: discharge pipe
50: resonance pipe 50a: resonance space
60: resonance hole 70: drain pipe

Claims (6)

An inlet pipe through which exhaust gas flows;
A centrifugal accelerator connected to the inlet pipe and equipped with acceleration blades to rotate and accelerate the exhaust gas;
an exhaust pipe connected to the centrifugal accelerator to discharge the exhaust gas;
a resonance pipe forming a resonance space outside the discharge pipe and surrounding the discharge pipe;
A resonance hole in which at least a portion of the discharge pipe is opened and communicates with the resonance pipe, and
It includes a cleaning liquid spraying unit disposed in front of the centrifugal accelerator and spraying a cleaning liquid inside the inflow pipe through which the exhaust gas passes,
A silencer with a contaminant removal function in which the inlet pipe, the cleaning liquid injection unit, the centrifugal accelerator, and the discharge pipe are sequentially arranged in a vertical direction. delete delete An inlet pipe through which exhaust gas flows;
A centrifugal accelerator connected to the inlet pipe and equipped with acceleration blades to rotate and accelerate the exhaust gas;
an exhaust pipe connected to the centrifugal accelerator to discharge the exhaust gas;
a resonance pipe forming a resonance space outside the discharge pipe and surrounding the discharge pipe;
A resonance hole in which at least a portion of the discharge pipe is opened and communicates with the resonance pipe, and
It includes a cleaning liquid spraying unit disposed in front of the centrifugal accelerator and spraying a cleaning liquid inside the inflow pipe through which the exhaust gas passes,
The resonance hole is formed at a higher position than the lower end of the resonance pipe,
A silencer with a contaminant removal function further comprising a drain pipe through which the cleaning liquid is drained at a lower end of the resonance pipe. According to clause 4,
A silencer having a pollutant removal function in which a plurality of resonance pipes are arranged in multiple stages in a direction perpendicular to the discharge pipe. According to claim 1 or 4,
The resonance hole is a silencer with a contaminant removal function that is opened in a ring shape along the circumference of the discharge pipe.

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