KR20210055504A - Silencer with decontamination function - Google Patents

Abstract

According to one embodiment of the present invention, provided is a silencer with a pollutant removing function. The silencer with the pollutant removing function according to one embodiment of the present invention may comprise: an inlet pipe through which exhaust gas flows in; a centrifugal acceleration part connected to the inlet pipe and installed with acceleration blades to accelerate a rotation of the exhaust gas; a discharge pipe connected to the centrifugal acceleration part to discharge the exhaust gas; a resonance pipe that forms a resonance space on the outside of the discharge pipe and surrounds the discharge pipe; and a resonance hole wherein at least a part of the discharge pipe is opened to communicate with the resonance pipe.

Description

Silencer with decontamination function

The present invention relates to a silencer having a pollutant removal function, and more particularly, to a silencer having a pollutant removal function capable of reducing 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 exhaust gases generated in the process of burning fuel include harmful substances such as nitrogen oxides (NOx) and sulfur oxides (SOx), as well as flammable residues. I'm doing it. Exhaust gas generated from the engine is discharged to the outside through an exhaust pipe, and a silencer is installed in the exhaust pipe to reduce noise caused by the flow of exhaust gas. A conical or spiral vane-shaped spark arrestor is installed on the exhaust pipe in front of the silencer. Prevents it from being discharged to the outside. In addition, a drum that periodically scrapes soot on the exhaust pipe in front of the silencer, an economizer that recovers waste heat from exhaust gas, a selective catalytic reduction reactor (SCR) for removing nitrogen oxides, and removal of sulfur oxides. A wet scrubber is installed.

As described above, in the related art, since a silencer, a spark arrester, a drum, an economizer, a selective catalytic reduction reactor, a wet scrubber, etc. are installed on the exhaust pipe, there is a problem of lack of space.

Accordingly, there is a need for a device capable of reducing flow noise while removing sulfur oxides contained in exhaust gas, thereby solving the problem of insufficient space in the exhaust pipe.

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

An object of the present invention is to provide a silencer having a pollutant removal function capable of reducing 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 that are not mentioned will be clearly understood by those skilled in the art from the following description.

A silencer having a pollutant removal function according to an embodiment of the present invention for achieving the above technical problem is an inlet pipe through which exhaust gas is introduced, and an acceleration blade is installed to accelerate the rotation of the exhaust gas. A centrifugal acceleration unit, a discharge pipe connected to the centrifugal acceleration unit 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 part of the discharge pipe open to the resonance pipe It includes a resonance hole that communicates with.

The silencer having the pollutant removal function may further include a cleaning liquid spraying part disposed in front of the centrifugal accelerator and spraying a cleaning liquid into the inlet pipe through which the exhaust gas passes.

The inlet pipe, the washing liquid injection part, the centrifugal acceleration part, and the discharge pipe may be sequentially arranged in a vertical direction.

The resonant hole is formed at a position higher than the lower end of the resonant pipe, and the silencer having the function of removing contaminants may further include a drain pipe through which the cleaning solution is drained at the lower end of the resonant pipe.

A plurality of resonance pipes may be arranged in multiple stages in a vertical direction 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 the noise in the duct due to the flow of the exhaust gas while removing sulfur oxides contained in the exhaust gas. Therefore, since there is no need to install a separate desulfurization facility on the exhaust pipe, the problem of lack of space can be solved.

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

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms, and only these embodiments make the disclosure of the present invention complete, and are common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

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

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

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

The silencer 1 having a pollutant removal function can reduce the noise in the duct due to the flow of the exhaust gas while removing sulfur oxides contained in the exhaust gas. Therefore, since there is no need to install a separate desulfurization facility on the exhaust pipe, there is a feature that can solve the problem of lack of space.

Hereinafter, a silencer 1 having a function of removing pollutants will be described in detail with reference to FIG. 2.

FIG. 2 is a cross-sectional view illustrating the silencer having a function of removing pollutants of FIG. 1 by cutting in the longitudinal direction.

The silencer (1) having a pollutant removal function according to the present invention includes an inlet pipe (10), a washing liquid spraying portion (20), a centrifugal accelerator (30), a discharge pipe (40), a resonance pipe (50), And a resonance hole 60.

The inlet pipe 10 is a pipe through which exhaust gas is introduced, and is disposed upright in a vertical extension section of the exhaust pipe and the lower end is connected to the exhaust pipe. Since the combustion engine normally burns fossil fuels to generate various types of power required for ships, it generates exhaust gas according to the combustion of fossil fuels. Since the exhaust gas generated from the combustion engine contains flammable residues such as soot and harmful substances such as sulfur oxides (SOx), it is necessary to remove them. The inlet pipe 10 is provided with a cleaning liquid spraying unit 20 for removing 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 may be selectively operated. The washing liquid injection unit 20 includes a washing liquid tank 20a surrounding the inlet pipe 10, and a washing liquid supply pipe 20b supplying a washing liquid, which is at least one of seawater, fresh water, and mixed water of seawater and fresh water, to the washing liquid tank 20a. ), and at least one spray nozzle 20c for spraying the cleaning liquid stored in the cleaning liquid tank 20b into the inflow pipe 10. The injection nozzle 20c may inject the cleaning liquid in a direction perpendicular to the flow direction of the exhaust gas, and a plurality of the injection nozzles 20c may be arranged in a ring shape along the circumference of the inlet pipe 10. By spraying the cleaning liquid into the inlet pipe 10 by the cleaning liquid spraying unit 20, flammable residues and sulfur oxides contained in the exhaust gas are mixed and dissolved in the cleaning liquid, so that the centrifugal accelerator 30 to be described later easily discharges the cleaning liquid from the exhaust gas. Can be removed. However, the cleaning liquid spraying unit 20 is not limited to including a cleaning liquid tank 20a, a cleaning liquid supply pipe 20b, and a spray nozzle 20c, for example, the cleaning liquid spraying part 20 is a conventional wet type. It may also be formed in the form of a wet scrubber. When the washing liquid spraying part 20 is formed in the form of a wet scrubber, the centrifugal acceleration part 30, the discharge pipe 40, and the resonance pipe 50, which will be described later, may be connected to the upper end of the scrubber. The exhaust gas in contact with the cleaning liquid and gas-liquid moves to the centrifugal acceleration unit 30.

The centrifugal acceleration unit 30 is connected to the inlet pipe 10 by rotating and accelerating the exhaust gas by installing acceleration blades. The acceleration blade may rotate to accelerate the exhaust gas, or may rotate and accelerate the exhaust gas in a fixed state. In the drawings, a single centrifugal accelerator 30 formed in the form of a propeller is shown to be installed inside the inlet pipe 10, but is not limited thereto, and the shape, number, and position of the centrifugal accelerator 30 may be variously modified. I can. For example, the centrifugal accelerator 30 may be installed outside the inlet pipe 10, and if necessary, a plurality of centrifugal acceleration units 30 may be arranged in a row along the flow direction of the exhaust gas. In addition, the centrifugal acceleration unit 30 may be formed of a cylindrical body and a blade coupled to form a spiral on the outside of the body. The centrifugal accelerator 30 rotates the exhaust gas so that the flammable residue and the sulfur oxide are mixed and dissolved, and the moisture particles that have become heavier can be separated from the exhaust gas by the centrifugal force. When the cleaning liquid is not sprayed into the exhaust gas because the cleaning liquid spraying unit 20 does not operate, a relatively heavy and large-particle flammable residue and sulfur oxide may be separated from the exhaust gas by centrifugal force. The exhaust gas from which the flammable residue and the sulfur oxide 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 acceleration unit 30. That is, the inlet pipe 10, the washing liquid injection unit 20, the centrifugal acceleration unit 30, and the discharge pipe 40 are sequentially arranged in a vertical direction. The exhaust gas from which the flammable residue and sulfur oxide are separated by the centrifugal accelerator 30 may be discharged directly to the outside through the discharge pipe 40 or may be discharged to the outside after undergoing a separate treatment process. At least part of the discharge pipe 40 may include a sound absorbing member to reduce noise caused by the flow of exhaust gas in the discharge pipe 40.

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 due to the flow of exhaust gas, and may be disposed surrounding the discharge pipe 40. That is, the noise generated in the discharge pipe 40 is primarily reduced by the sound-absorbing member, and is secondarily reduced by the resonance pipe (50). The resonance pipe 50 may be in communication with the discharge pipe 40 through the resonance hole 60.

The resonance hole 60 may be formed to pass through the discharge pipe 40 in the radial direction of the discharge pipe 40 by opening at least a part of the discharge pipe 40 to communicate with the resonance pipe 50. The resonance hole 60 may be formed at a position higher than the lower end of the resonance pipe 50, and a plurality of the resonance holes 60 may be opened in a ring shape along the circumference of the discharge tube 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 in 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 that some of the sound energy is converted into thermal energy, and noise may be reduced. In addition, the rotational acceleration in the centrifugal acceleration unit 30 can collect the flammable residue and sulfur oxide separated from the exhaust gas, and the moisture particles heavier than the exhaust gas in the resonance space 50a, so that pollutants and moisture particles are discharged from the discharge pipe ( 40) can be prevented from being discharged. In the drawing, it is shown that the resonance pipe 50 is formed as a single stage outside the discharge pipe 40 of the resonance pipe 50, but the present invention is not limited thereto, and if necessary, a plurality of the resonance pipe 50 may be provided. ) May be arranged in multiple stages on the outside.

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 inflammable residue, sulfur oxide, and moisture particles collected in the resonance space 50a by rotation acceleration in the centrifugal acceleration unit 30 are discharged through the drain pipe 70 to undergo a series of water treatment processes.

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

3 is an operation diagram for explaining the operation of the silencer having a pollutant removal function.

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

The exhaust gas introduced into the inlet pipe 10 is in 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 and the gas-liquid, and thus, the moisture particles that have become heavy by mixing and dissolving the flammable residue and the sulfur oxide are separated from the exhaust gas by the centrifugal force. Flammable residues and sulfur oxides separated from the exhaust gas, and moisture particles heavier than the exhaust gas are collected in the resonance space 50a through the resonance hole 60, and are discharged through the drain pipe 70 connected to the resonance space 50a. It goes through a series of water treatment processes.

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 resonant pipe 50 through which the discharge pipe 40 and the inside communicate with the discharge pipe 40 through the resonance hole 60 is disposed outside the discharge pipe 40, noise due to the flow of the exhaust gas can be reduced.

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

4 is an operation diagram for explaining the operation of a silencer having 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 vertical direction on the discharge pipe 40. The silencer (1a) having 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 a vertical direction to the discharge pipe (40). Do. Therefore, this is mainly described, but the description of the remaining components is replaced with the above unless otherwise stated.

A plurality of resonance pipes 50 may be arranged in multiple stages in a vertical direction to the discharge pipe 40, and at this time, the resonance holes 60 connecting each of the resonance pipes 50 and the discharge pipe 40 are provided in a plurality of discharge pipes ( 40) can be opened in the vertical direction. In addition, each resonance pipe 50 may be connected to a drain pipe 70 at the lower end. Since the plurality of resonance pipes 50 are arranged in multiple stages in a vertical direction on the discharge pipe 40, a noise reduction effect according to the flow of exhaust gas may be increased. In particular, when the sizes of the resonance holes 60 communicating with each of the resonance pipes 50 and the discharge tubes 40 are formed differently from each other, noise of various frequencies may be reduced, so that the noise reduction effect may be further increased. However, it is not limited that the sizes of the resonance holes 60 communicating with each of the resonance pipes 50 and the discharge tubes 40 are formed differently from each other, and if necessary, the plurality of resonance holes 60 have different sizes. It may be formed identically.

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

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

The silencer (1b) having a pollutant removal function according to another embodiment of the present invention has a cylindrical body 31 with a centrifugal acceleration part 30, and a blade 32 coupled to the outside of the body 31 in a spiral shape. ). The silencer (1b) having a pollutant removal function according to another embodiment of the present invention has a cylindrical body 31 with a centrifugal acceleration part 30, and a blade 32 coupled to the outside of the body 31 in a spiral shape. Except for consisting of ), it is substantially the same as the above-described embodiment. Therefore, this is mainly described, but the description of the remaining components is replaced with the above unless otherwise stated.

The centrifugal acceleration unit 30 is connected to the inlet pipe 10 to accelerate the rotation of 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 inlet 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 attached to the outside of the body 31 in a helical manner, so as to induce rotational acceleration of the exhaust gas. That is, the exhaust gas introduced into the inlet pipe 10 flows along the blade 32 and is rotated and accelerated. Since the centrifugal acceleration unit 30 is composed of the body 31 and the blade 32, the moisture particles that have become heavy due to mixing and dissolving of flammable residues and sulfur oxides are moved along the blade 32 to facilitate the blocking unit 41 side. Can be guided.

Embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You will be able to understand. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects.

1, 1a, 1b: silencer having a pollutant removal function
10: inlet pipe 20: washing liquid injection part
20a: washing liquid tank 20b: washing liquid supply pipe
20c: injection nozzle 30: centrifugal acceleration unit
31: body 32: blade
33: connecting member 40: discharge pipe
50: resonance pipe 50a: resonance space
60: resonance hall 70: drain pipe

Claims (6)

An inlet pipe through which exhaust gas is introduced;
A centrifugal acceleration unit connected to the inlet pipe and provided with an acceleration blade to rotate and accelerate the exhaust gas;
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
A silencer having a contaminant removal function including a resonance hole in which at least a portion of the discharge pipe is opened to communicate with the resonance pipe. The method of claim 1,
A silencer having a pollutant removal function further comprising a cleaning liquid spraying part disposed in front of the centrifugal acceleration part and spraying a cleaning liquid into the inlet pipe through which the exhaust gas passes. The method of claim 2,
The inflow pipe, the washing liquid spraying part, the centrifugal acceleration part, and the discharge pipe are a silencer having a pollutant removal function that is sequentially arranged in a vertical direction. The method of claim 2,
The resonance hole is formed at a position higher than the lower end of the resonance pipe,
A silencer having a pollutant removal function further comprising a drain pipe through which the cleaning solution is drained at a lower end of the resonance pipe. The method of claim 4,
A silencer having a function of removing pollutants in which a plurality of the resonance pipes are arranged in multiple stages in a vertical direction to the discharge pipe. The method of claim 2,
The resonance hole is a silencer having a function of removing pollutants opened in a ring shape along the periphery of the discharge pipe.

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