KR101505571B1 - Apparatus for Discharging Exhaust Gas for Ship - Google Patents

Abstract

An apparatus for discharging exhaust gas of a ship is disclosed.
The apparatus for exhausting a ship according to an embodiment of the present invention includes a purifier for purifying exhaust gas discharged from an engine, a first pump for pressurizing the purified exhaust gas, a storage vessel for storing the pressurized exhaust gas, A compression gas generator for receiving the exhaust gas stored in the storage container and generating a compressed gas by compressing the exhaust gas; and a compressor for receiving the compressed gas from the compressed gas generator, And a discharge nozzle.

Description

[0001] Apparatus for Discharging Exhaust Gas for Ship [0002]

BACKGROUND OF THE INVENTION [0002] The present application relates to an exhaust gas exhaust apparatus of a ship.

Generally, the ship is equipped with a propulsion engine for driving and a power generation engine for power generation. When such a propulsion engine and a power generation engine are driven, an exhaust gas containing contaminants such as carbon dioxide, nitrogen oxides, and sulfur oxides must be discharged to the atmosphere through an exhaust pipe.

1 is a schematic view showing a process of discharging exhaust gas generated in a conventional ship

The exhaust gas generated in the propulsion engine 11 is conveyed to the stack 6 along the first exhaust pipe 13 and the exhaust gas generated in the power generating engine 12 is conveyed along the second exhaust pipe 14 to the deck And is transported to the stacking stones 6 provided in the stator. The piled-up stones 6 have a height greater than the height of the docking station 5 to prevent the exhaust gas from moving to the docking station 5 installed on the ship.

However, there has been a problem in that the exhaust gas discharged through the stack 6 can not be completely prevented from diffusing into the housing 5. [ In addition, when the propulsion engine 11 and the power generation engine 12 are warmed up at the port, the concentration of contaminants in the exhaust gas is increased due to incomplete combustion, thereby causing environmental problems.

This exhaust gas caused a considerable noise, resulting in a noise problem at the port 5 of the ship as well as a noise at the port when the port was docked.

On the other hand, when the propeller 7 operated by the propulsion engine 11 rotates to generate propulsive force, cavitation occurs around the propeller 7. Such cavitation generates a pressure wave which is transmitted to the hull located above the propeller 7. The pressure wave delivered to the hull had the problem of causing the hull to vibrate.

Korean Patent No. 10-1031269

The apparatus for exhausting the exhaust gas of a ship according to the embodiment of the present invention is for reducing energy used in a ship by using exhaust gas without discharging the exhaust gas through the stack.

According to an aspect of the present invention, there is provided a purifier for purifying exhaust gas discharged from an engine, a pressurizer for pressurizing the purified exhaust gas, a storage container for storing the pressurized exhaust gas, And a nozzle for receiving the compressed gas from the compressed gas generating unit and discharging the compressed gas on the upper side of the propeller installed on the hull, wherein the compressed gas generating unit generates compressed gas by compressing the exhaust gas, An exhaust gas discharging device may be provided.

In addition, the nozzle may release the compressed gas between the upper side of the propeller and the outer side of the stern to form a bubble layer.

The exhaust gas exhaust device of the ship may further include a first exhaust line connected to the purifier for exhausting the purified exhaust gas to the atmosphere and a second exhaust line connected to the first exhaust line, And a first discharge line valve for opening the first discharge line when the pressure is equal to or higher than the predetermined pressure.

The exhaust gas discharging device of the ship may further include a second discharge line for discharging exhaust gas stored in the storage container to the atmosphere and a second discharge line for discharging the exhaust gas stored in the storage container to a second set pressure And a second discharge line valve for opening the second discharge line.

The exhaust gas discharge device of the ship may further include a bubble generator receiving the compressed gas from the compressed gas generator and discharging the compressed gas from the bottom of the hull.

The exhaust gas discharge device of the ship may further include a first connection line through which the compressed gas compressed by the compressed gas generating section is transferred, a second connection line branched from the first connection line and connected to the nozzle, A third connection line branched from the connection line and connected to the bubble generator, and a second connection line provided at a branch point of the first connection line, the second connection line and the third connection line, And a distributor for distributing the first connection line to at least one of the third connection lines.

In addition, the plurality of bubble generating units may be disposed on the bottom of the hull where the receiving grooves are formed, and the compressed gas may be discharged into the receiving grooves to form a bubble layer in the receiving grooves.

The apparatus for exhausting exhaust gas of a ship according to the embodiment of the present invention can prevent the exhaust gas from diffusing into a habitat of a ship by storing the exhaust gas primarily in the storage container without discharging the exhaust gas through the stack to the atmosphere .

In addition, it is possible to prevent a large amount of exhaust gas from being warmed up by the propulsion engine from spreading to the vicinity of the port when the port is moored.

In addition, by pressurizing the purified exhaust gas using a pressurizer, it is possible to prevent the back pressure of the exhaust pipe from dropping, thereby preventing the performance of the propulsion engine or the power generation engine from deteriorating.

Further, by generating the compressed gas by using the exhaust gas stored in the storage container, consumption of the energy for generating the compressed gas can be reduced.

Further, since the exhaust gas is discharged to the sea water without discharging it to the atmosphere, noise can be prevented from being generated around the ship.

1 is a schematic view showing a process of discharging exhaust gas generated in a conventional ship.
FIG. 2 is a view showing an exhaust gas discharging apparatus of a ship according to an embodiment of the present invention. FIG.
FIG. 3 is a view showing a state in which a compressed gas is discharged on the upper side of the propeller of FIG. 2 to form a bubble layer.
4 is a view showing an exhaust gas discharge apparatus of a ship according to another embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention in which the object of the present invention can be specifically realized will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

FIG. 2 is a view showing an exhaust gas discharging device of a ship according to an embodiment of the present invention, and FIG. 3 is a view showing a state in which a compressed gas is discharged on the upper side of the propeller of FIG. 2 to form a bubble layer.

2 and 3, the apparatus for discharging exhaust gas of a ship according to an embodiment of the present invention includes a purifier 110, a pressurizer 120, a storage container 130, a compressed gas generator 200, (Not shown).

The purifier 110 can purify the exhaust gas discharged from the engine.

Here, the engine may be a propulsion engine 11 that generates propulsive force or a power generation engine 12 that produces the necessary power in the ship.

The exhaust gas generated in the propulsion engine 11 is transferred to the purifier 110 along the first exhaust pipe 101. The exhaust gas generated in the power generating engine 12 is transferred to the purifier 110 along the second exhaust pipe 102. Alternatively, the first exhaust pipe 101 or the second exhaust pipe 102 may be connected to the other one of the first exhaust pipe 101 and the second exhaust pipe 102, and may be transferred to the purifier 110.

The purifier 110 may be provided on the deck of the ship. Since the purifier 110 is provided on the deck, it is not necessary to change the design of the ship for installing the purifier 110 inside the hull, and the operator can access the purifier 110 .

The purifier 110 may be a particulate filter for filtering the particulate matter contained in the exhaust gas. The filter may repeat the process of collecting and burning the particulate matter. In addition, a catalyst for lowering the combustion temperature of particulate matter may be coated inside the filter.

In addition, the purifier 110 may be a selective catalytic reduction (SCR) system that converts exhaust gas to nitrogen and water by passing the exhaust gas through a catalyst bed together with a reducing agent.

The purifier 110 may include the filter and the selective reduction catalyst device at the same time. However, the purifier 110 is not limited thereto, and various exhaust gas purifiers for reducing environmental pollution in the atmosphere or marine environment can be applied.

The pressurizer 120 can pressurize the purified exhaust gas. The pressurizer 120 may be installed on a transfer pipe 122 connecting the purifier 110 and a storage container 130 to be described later. The pressurizer 120 may press the exhaust gas discharged from the purifier 110 and then transfer the pressurized exhaust gas to the storage container 130.

On the other hand, if the exhaust gas passes sequentially through the first exhaust pipe 101, the second exhaust pipe 102, and the purifier 110, a back pressure loss may occur. This back pressure loss causes a problem that the exhaust gas is not smoothly discharged from the propulsion engine 11 or the power generation engine 12 and deteriorates the performance of the propulsion engine 11 or the power generation engine 12 .

The pressurizer 120 can pressurize the purified exhaust gas to prevent the back pressure from being excessively lowered. The pusher 120 can prevent the back pressure from dropping and prevent the performance of the propulsion engine 11 or the power generation engine 12 from deteriorating.

The storage vessel 130 may store the pressurized exhaust gas. That is, the storage container 130 may store the compressed exhaust gas by the pressurizer 120.

In addition, the storage container 130 may be provided on the deck of the hull, and may be replaced with a previously installed stack, so that a design change for securing a space for installing the storage container 130 is unnecessary.

On the other hand, even when the exhaust gas generated from the propulsion engine 11 or the power generation engine 12 is stored in the storage container 130 without being discharged to the atmosphere, the aforementioned back pressure drop problem may occur.

In contrast, the exhaust gas discharge apparatus of the present invention can prevent the drop of the back pressure loss by pressurizing the exhaust gas by the pusher 120 and storing the pressurized gas in the storage container 130. [

The exhaust gas discharging device according to the embodiment of the present invention may be configured such that the exhaust gas is primarily stored in the storage container 130 without releasing the exhaust gas through the stack to the atmosphere, The exhaust gas can be prevented from diffusing.

In addition, it is possible to prevent a large amount of exhaust gas due to the warm-up of the propulsion engine 11 from being diffused to the vicinity of the port when the vehicle is docked in a port, and noise caused by the exhaust gas discharge can be prevented from being generated.

The compressed gas generator 200 receives the exhaust gas stored in the storage container 130 and compresses the exhaust gas to generate a compressed gas. In addition, the compressed gas generator 200 may include a compressor capable of compressing the exhaust gas.

As described above, the compression gas generator 200 according to the present embodiment can reduce the energy consumption for increasing the pressure by using the exhaust gas compressed and stored in the storage container 130.

The nozzle 225 receives the compressed gas from the compressed gas generating unit 200 and can discharge the compressed gas above the propeller 7 installed on the ship.

Here, the propeller 7 can generate pressure waves due to cavitation during rotation. The pressure wave is transmitted to the hull located on the upper side of the propeller 7 to generate vibration in the hull.

The nozzle 225 may be exposed to the outside of the hull through a hole opened to the hull and may be disposed to face the upper side of the propeller 7.

The nozzle 225 applied to the present embodiment can form the bubble layer by discharging the compressed gas between the upper side of the propeller 7 and the outer surface 8 of the hull.

The bubble layer may prevent a pressure wave generated when the propeller 7 is rotated from being transmitted to the hull 1. Thus, the vibration of the hull 1 due to the pressure wave can be reduced.

Thus, the exhaust gas discharging device of the present embodiment does not need to discharge the exhaust gas to the atmosphere, and discharge it to the sea through the stern, thereby eliminating the need for installing the existing stack. In addition, it is possible to prevent the exhaust gas from being emitted to the atmosphere, thereby making it possible to prevent noise from being generated.

Further, by using exhaust gas to form the bubble layer, energy consumption for compressing the compressed gas can be reduced.

Meanwhile, the exhaust gas discharging device of the present invention may further include a first discharge line 114 and a first discharge line valve 116.

The first exhaust line 114 is connected to the purifier 110 and can discharge the purified exhaust gas to the atmosphere.

The first discharge line valve 116 is provided in the first discharge line 114 and may open the first discharge line 114 when the pressure inside the purifier 110 is equal to or higher than a first set pressure . Here, the first set pressure may be a pressure that is caused by the exhaust gas existing in the purifier 110, the purifier 110 can not purify the exhaust gas normally, or the purifier 110 is broken Pressure.

In addition, the first discharge line valve 116 may open / close the first discharge line 114 by an electrical signal.

In addition, a first pressure sensor 112 capable of measuring pressure may be provided in the purifier 120.

The first pressure sensor 112 is connected to the controller 500 and transmits the measured pressure value to the controller 500. The control unit 500 compares the measured pressure value with the first predetermined pressure and sends an electrical signal to the first discharge line valve 116 to discharge the first discharge line 114 Open.

As described above, in the exhaust gas discharging apparatus of the present embodiment, since the first discharge line 114 and the first discharge line valve 116 are provided, the purifier 110 can be operated at a first set pressure or higher It is possible to prevent malfunction or breakage.

In addition, when the exhaust gas is stored in the storage container 130 in a saturated state, the first exhaust line valve 116 is operated to discharge the purified exhaust gas to the atmosphere through the first exhaust line 114 .

In addition, the exhaust gas discharging apparatus of the present invention may further include a second discharge line 134 and a second discharge line valve 136. [

The second discharge line 134 may discharge the exhaust gas stored in the storage container 130 to the atmosphere.

A second discharge line valve 136 is provided in the second discharge line 134 and may open the second discharge line 134 when the stored exhaust gas in the storage container is above a second set pressure. Here, the second set pressure refers to a pressure at which the exhaust gas can be maximally stored due to the material, volume, etc. of the storage container 130.

In addition, a second pressure sensor 132 capable of measuring pressure may be provided in the storage container 130.

The second pressure sensor 132 is connected to the controller 500 and transmits the measured pressure value to the controller 500. The control unit 500 compares the pressure value measured by the second pressure sensor 132 with the second set pressure and outputs an electrical signal to the second discharge line valve 136 when the pressure is equal to or greater than the second set pressure And the second discharge line 134 is opened.

In this way, the exhaust gas discharging device of the present embodiment is provided with the second discharge line 134 and the second discharge line valve 136, so that the pressure inside the storage container 130 is higher than that of the second It is possible to prevent the storage container 130 from being damaged by increasing the pressure beyond the set pressure.

The apparatus for discharging exhaust gas of a ship according to the present embodiment includes a bubble generator 400, a first connection line 210, a second connection line 220, a third connection line 230, and a distributor 300 .

The bubble generator 400 may receive the compressed gas from the compressed gas generator 200 and discharge the compressed gas from the bottom of the hull 1.

First, the compressed gas compressed by the compressed gas generator 200 may be transferred through the first connection line 210. The compressed gas may be transferred to the nozzle 225 through the second connection line 220 branched from the first connection line 210.

The compressed gas may be transferred to the bubble generator 400 through the third connection line 230 branched from the first connection line 210. That is, the bubble generator 400 may communicate with the third connection line 230 and may be formed at the bottom of the hull so that the compressed gas may be discharged.

As described above, the exhaust gas discharging apparatus of the present embodiment forms a bubble layer on the bottom of the hull through the bubble generating unit 400, so that the frictional force of seawater during operation of the ship can be reduced.

Further, by generating the compressed gas discharged to the bottom of the hull using the exhaust gas, energy consumption for generating the compressed gas can be reduced.

The distributor 300 may be installed at a junction of the first connection line 210, the second connection line 220, and the third connection line 230. The distributor 300 may distribute the compressed gas transferred through the first connection line 210 to at least one of the second connection line 220 and the third connection line 230.

The distributor 300 may be a 3-way valve controlled by an electrical signal. That is, the distributor 300 can regulate the flow rate of the compressed gas delivered to the second connection line 220 or the third connection line 230.

For example, when the pressure wave due to the rotation of the propeller 7 is greatly increased, that is, vibration may be transmitted to the hull at a predetermined vibration value or more. Here, the set vibration value means an oscillation value generated by forming the bubble layer and transmitting the pressure wave to the hull.

To this end, a vibration sensor 227 may be installed on the hull above the propeller 7. The vibration sensor 227 measures a vibration value and transmits the measured vibration value to the control unit 500. The control unit 500 compares the measured vibration value with the set vibration value, and when the measured vibration value is equal to or greater than the set vibration value, the control unit 500 delivers the electric signal to the distributor 300.

The distributor 300 may increase the flow rate of the compressed gas to the second connection line 220 by an electrical signal from the controller 500. Accordingly, the compressed gas is discharged to the nozzle 225 through the second connection line 220, so that the bubble layer can be formed more and the vibration of the hull can be reduced.

Conversely, when stopping the operation of the propeller 7 during operation, the distributor 300 closes the second connection line 220 and increases the flow rate of the compressed gas to the gas generator 400 .

As described above, the distributor 300 according to the present embodiment can more efficiently utilize the compressed gas by adjusting the flow rate of the compressed gas required in the nozzle 225 or the gas generating unit 400.

Referring to FIG. 4, an exhaust gas discharging apparatus for a ship according to another embodiment of the present invention will be described. The baffle layer generated by the baffle generating portion and the mounting portion of the baffle generating portion of the above-described embodiment will be mainly described. Since other components not described in this embodiment are substantially similar to the above-described embodiment, It will be omitted.

The plurality of bubble generating units 400 may be disposed at the bottom of the hull where the receiving recesses 410 are formed. In addition, the plurality of bubble generating units 400 may be disposed at regular intervals according to the width and length of the ship.

The receiving groove 410 may be formed to be depressed inward from the bottom of the hull. In addition, when the compressed gas is discharged from the plurality of bubble generating units 400 in the receiving groove 410, a bubble layer may be formed by receiving the compressed gas.

That is, the receiving groove 410 allows the bubble layer to be held on the bottom of the hull without flowing in a direction opposite to the direction in which the compressed gas is operated by the ship. Accordingly, the bubble layer reduces the friction with the seawater during operation of the ship, thereby reducing the fuel cost for propelling the ship.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. . Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

101: first exhaust pipe 102: second exhaust pipe
110: purifier 112: first pressure sensor
114: first exhaust line 116: first exhaust line valve
120: pressurizer 130: storage container
132: second pressure sensor 134: second discharge line
136: second discharge line valve 200: compressed gas generator
210: first connection line 220: second connection line
225: nozzle 227: vibration sensor
230: Third connection line 300: Dispenser
400: bubble generator 410: receiving groove
500:

Claims (7)

A purifier for purifying the exhaust gas discharged from the engine;
A pressurizer for pressurizing the purified exhaust gas;
A storage container for storing the pressurized exhaust gas;
A compression gas generator for receiving exhaust gas stored in the storage container and compressing the exhaust gas to generate a compressed gas;
The compression gas is delivered from the compressed gas generating unit to the compressor and is discharged to the upper side of the propeller installed on the hull, and the compressed gas is discharged between the upper side of the propeller and the outer surface of the hull to form a bubble layer Nozzle;
A vibration sensor provided on the hull above the propeller; And
And a controller for receiving the vibration value measured by the vibration sensor and increasing the flow rate of the compressed gas when the vibration value is equal to or higher than a set vibration value. delete The method according to claim 1,
A first exhaust line connected to the purifier and discharging the purified exhaust gas to the atmosphere; And
Further comprising a first exhaust line valve provided in the first exhaust line and opening the first exhaust line when the purified exhaust gas is above a first set pressure. The method according to claim 1,
A second discharge line for discharging the exhaust gas stored in the storage container to the atmosphere; And
Further comprising a second discharge line valve provided in the second discharge line and opening the second discharge line when the stored exhaust gas of the storage container is above a second set pressure. The method according to claim 1,
And a bubble generator for receiving the compressed gas from the compressed gas generator and discharging the compressed gas from the bottom of the hull. 6. The method of claim 5,
A first connection line through which the compressed gas compressed by the compressed gas generating unit is transferred;
A second connection line branched from the first connection line and connected to the nozzle;
A third connection line branched from the first connection line and connected to the bubble generating unit; And
Further comprising a distributor provided at a branch point of the first connection line, the second connection line and the third connection line, the distributor distributing the compressed gas to at least one of the second connection line and the third connection line Exhaust emission device. 6. The method of claim 5,
Wherein the plurality of bubbles generating units are disposed on the bottom of the hull where the receiving grooves are formed and emit the compressed gas into the receiving grooves to form a bubble layer in the receiving grooves.

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