KR20180071577A - treatment system of liquefied gas and ship having the same - Google Patents

Abstract

The present invention relates to a gas treatment system and a ship. The gas treatment system mounted in a ship comprises: a liquefied gas storage tank storing liquefied gas to be used as a propulsion fuel of the ship; a power generating engine consuming evaporation gas generated in the liquefied gas storage tank; an electricity management portion for calculating a limited additional electricity with respect to power consumption consumed by the ship from general output generated when the power generating engine consumes the evaporation gas; and an electricity treatment portion controlling operation of the electricity consumption device provided in the ship and consuming the additional electricity, thereby capable of stably maintaining an internal pressure of the liquefied gas storage tank.

Description

[0001] DESCRIPTION [0002] Gas treatment systems and vessels [0003]

The present invention relates to a gas treatment system and a vessel.

Liquefied natural gas (Liquefied natural gas), Liquefied petroleum gas (Liquefied petroleum gas) and other liquefied gas are widely used in place of gasoline or diesel in recent technology development.

Liquefied natural gas is a liquefied natural gas obtained by refining natural gas collected from a gas field. It is a colorless and transparent liquid with almost no pollutants and high calorific value. It is an excellent fuel. On the other hand, liquefied petroleum gas is a liquid fuel made by compressing gas containing propane (C3H8) and butane (C4H10), which come from oil in oil field, at room temperature. Liquefied petroleum gas, like liquefied natural gas, is colorless and odorless and is widely used as fuel for household, business, industrial, and automotive use.

Such liquefied gas is stored in a liquefied gas storage tank installed on the ground or stored in a liquefied gas storage tank provided in a ship which is a means of transporting the ocean. The liquefied natural gas is liquefied to a volume of 1/600 The liquefaction of liquefied petroleum gas has the advantage of reducing the volume of propane to 1/260 and the content of butane to 1/230, resulting in high storage efficiency.

Since the liquefied gas is stored in a liquefied gas storage tank in a forced liquefied state, but the liquefied gas storage tank can not achieve perfect insulation, some of the liquefied gas stored in the liquefied gas storage tank is heated by heat transmitted from the outside Which is a gas.

When the internal pressure of the liquefied gas storage tank exceeds the pressure that can be tolerated by the liquefied gas storage tank, the liquefied gas storage tank The tank may be damaged.

Therefore, conventionally, in order to maintain the internal pressure of the liquefied gas storage tank constant, a method of burning the evaporated gas into the gas combustion unit (GCU) is used to lower the internal pressure of the liquefied gas storage tank. Or the evaporation gas was discharged to the outside of the liquefied gas storage tank, and then liquefied by using a separate liquefaction device and then recovered again into the liquefied gas storage tank.

However, when the evaporation gas is burned, energy is wasted, and when the re-liquefaction device is used, there arises problems such as cost and manpower required for installing and operating the re-liquefaction device.

Particularly, in the case of a general merchant line carrying liquefied gas as a propellant, not a liquefied gas carrier carrying liquefied gas as a cargo, there is a problem that it is not easy to install a gas combustion device or a liquefaction device due to space limitation.

Therefore, a system for effectively treating the evaporation gas continuously generated in the liquefied gas storage tank has been continuously studied, but a system which has not improved the above problems has not been developed yet.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a gas generating apparatus and a gas generating method capable of processing a vaporized gas using a power generation engine, Processing systems and vessels.

A gas processing system according to an embodiment of the present invention is a gas processing system mounted on a ship, comprising: a liquefied gas storage tank for storing a liquefied gas to be used as propelling fuel for the ship; A power generation engine that consumes evaporative gas generated in the liquefied gas storage tank; A power management unit for calculating additional power limiting power consumption consumed by the ship from power generation power generated by the power generation engine by consuming the evaporation gas; And a power processor for controlling the operation of the power consumption device provided on the ship to consume the additional power.

Specifically, the power processor receives the generated power from the power generation engine, and transmits the generated power to the power management unit.

Specifically, the power management unit may transmit the amount of the additional power to the power processing unit, and the power processing unit may control the operation of the power consumption device to correspond to the amount of the additional power received from the power management unit have.

Specifically, the power processor includes: a switch board that receives the generated power from the power generation engine and transmits additional power to the power consuming device; And a monitoring system for receiving the amount of generated power from the switch board and transmitting the received amount to the power management unit.

Specifically, the power management unit may receive the amount of the generated power from the monitoring system and transmit the amount of the additional power to the monitoring system.

In particular, the monitoring system may receive the amount of the additional power from the power management unit and control the operation of the power consumption device so that the additional power is delivered to the power consumption device via the switchboard.

Specifically, the liquefied gas storage tank may have a measuring unit for measuring the amount of evaporated gas generated therein.

Specifically, the operation of the power generation engine can be controlled according to the amount of the evaporation gas measured by the measuring unit.

Specifically, the apparatus further includes a boiler that consumes evaporative gas generated in the liquefied gas storage tank, and the boiler may preferentially consume the evaporated gas over the power generation engine.

Specifically, the ship may be a general merchant ship carrying cargo other than the liquefied gas and excluding a liquefied gas carrier.

Specifically, the power consumption device may be at least one of a cargo transportation device for transporting the cargo and a cargo hold fan installed in the cargo hold.

Specifically, the power consumption device may be at least one of an air conditioning system provided on the ship and a balusting system provided on the ship.

Specifically, the system may further include a propulsion engine that consumes liquefied gas from the liquefied gas storage tank.

A ship according to an embodiment of the present invention is characterized by having the gas treatment system.

The gas treatment system and the ship according to the present invention can be applied to a general merchant ship other than a liquefied gas carrier in which it is substantially impossible to install a gas combustion device or a liquefaction device, So that the internal pressure of the liquefied gas storage tank can be stably maintained and waste of energy can be prevented.

1 is a side view of a vessel having a gas treatment system according to an embodiment of the invention;
2 is a conceptual diagram of a gas processing system according to an embodiment of the present invention.
3 is a conceptual diagram of a gas processing system according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, a gas treatment system 1 of the present invention will be described. The present invention includes a gas treatment system 1 and a vessel 100 having the same.

In this case, in the present invention, the vessel 100 has a holder 110 for loading the cargo 111, which is not a liquefied gas, and may be a general merchant line excluding the liquefied gas carrier, The liquefied gas storage tank 10 for storing the liquefied gas can be mounted in the hull.

Hereinafter, the liquefied gas may be used to encompass all gaseous fuels generally stored in a liquid state, such as LNG or LPG, ethylene, ammonia, etc. In the case where the gas is not in a liquid state by heating or pressurization, . This also applies to the evaporative gas.

In addition, LNG can be used to mean not only NG (Natural Gas) in liquid state but also NG in supercritical state for convenience, and evaporation gas can be used to include not only gaseous evaporation gas but also liquefied evaporation gas have.

1 is a side view of a ship 100 having a gas treatment system according to an embodiment of the present invention, and FIGS. 2 and 3 are conceptual diagrams of a gas treatment system according to an embodiment of the present invention.

3, the solid line represents a line through which liquefied gas or vapor flows, the dotted line represents a line through which information about power flows, and the one-dot chain line represents a line through which power flows.

1 to 3, a gas processing system 1 according to an embodiment of the present invention is mounted on a ship 100 and includes a liquefied gas storage tank 10, a transfer pump 20, A power management unit 60, a power processing unit 70, a power consumption device 80, and an oil storage tank 90. The power generation unit 30 includes a propulsion engine 40, a power generation engine 50,

The liquefied gas storage tank 10 stores liquefied gas. The liquefied gas storage tank 10 stores the liquefied gas in a liquid state, wherein the liquefied gas storage tank 10 can store the liquefied gas at a pressure of 1 bar to 10 bar (1.03 bar, for example).

The liquefied gas storage tank 10 may be a stand-alone type, a membrane type, a pressurized type, and the like. The liquefied gas may be stored in a liquid state using various heat insulating structures. The evaporation occurring in the liquefied gas storage tank 10 The gas can be consumed by the power generation engine 50 or the like to be described later.

The liquefied gas stored in the liquefied gas storage tank 10 can be used as fuel for propulsion of the ship 100. The liquefied gas can be supplied from the liquefied gas storage tank 10 to the propulsion engine 40 provided in the engine room 120 of the ship 100. For this purpose, The liquefied gas supply line 24 can be connected.

The liquefied gas supply line 24 connected to the liquefied gas storage tank 10 can also be used as the liquefied gas supply line 24 because the liquefied gas can be consumed in the power generation engine 50. May be branched downstream of the liquefied gas storage tank 10 and connected to the propulsion engine 40 and the power generation engine 50, respectively.

Although the evaporated gas generated in the liquefied gas storage tank 10 may be transferred to the propulsion engine 40, in the present invention, the ship 100 may be a general merchant line, not a liquefied gas carrier, The liquefied gas storage tank 10 is smaller in size than that used in the liquefied gas carrier, and the evaporation from the liquefied gas storage tank 10 Gas alone may not meet the requirements of propulsion engine 40. Therefore, in the present invention, it is noted that the propulsion engine 40 can generate thrust by consuming the liquefied gas, but is not limited thereto.

The liquefied gas storage tank 10 may be provided with a measuring section 11 and the measuring section 11 may measure the amount of the evaporated gas generated inside the liquefied gas storage tank 10. The measuring section 11 can calculate / estimate the amount of the evaporated gas based on the amount of the liquefied gas stored in the liquefied gas storage tank 10 or calculate the amount of the evaporated gas based on the internal pressure of the liquefied gas storage tank 10 Can be calculated / estimated.

That is, the measuring unit 11 may be a pressure gauge, a level gauge or the like, and the type of the measuring unit 11 is not particularly limited. Of course, the measuring section 11 may include both a pressure gauge and a level gauge.

The transfer pump 20 is provided in the liquefied gas supply line 24 and transfers the liquefied gas. The liquefied gas pump may be provided inside and / or outside the liquefied gas storage tank 10, and it may pressurize liquefied gas at 1 to 10 bar.

The transfer pump 20 can be provided in the liquefied gas storage tank 10 and the liquefied gas can be transferred to the propulsion engine 40 or the power generation engine 50 by the plurality of transfer pumps 20. [ . In this case, any one of the transfer pumps 20 may be provided for backing up the other transfer pump 20.

A high-pressure pump 21 may be provided between the transfer pump 20 and the propulsion engine 40 in the liquefied gas supply line 24. The high pressure pump 21 can pressurize the liquefied gas delivered by the feed pump 20 to a pressure required by the propulsion engine 40. [

The pressure of the liquefied gas pressurized by the transfer pump 20 at this time can correspond to the required pressure of the power generation engine 50. [ The required pressure of the propulsion engine 40 may be higher than the required pressure of the power generation engine 50 so that the difference between the required pressure of the power generation engine 50 and the demanded pressure of the propulsion engine 40 is reduced, The liquefied gas can be pressurized and delivered to the propulsion engine 40.

For example, when the propulsion engine 40 is a high-pressure engine such as MEGI, XDF, etc., the high-pressure pump 21 can pressurize the liquefied gas to 30 to 400 bar, And is not particularly limited.

The pressure of the liquefied gas transferred by the transfer pump 20 may correspond to the required pressure of the propulsion engine 40 when the required pressure of the propulsion engine 40 is equal to the required pressure of the power generation engine 50 As a result, the high-pressure pump 21 can be omitted.

A heat exchanger 22 may be provided downstream of the high-pressure pump 21 between the transfer pump 20 and the propulsion engine 40. The heat exchanger 22 can heat the liquefied gas to meet the required temperature of the propulsion engine 40, and the heat source used by the heat exchanger 22 can be glycol water, seawater or the like and is not particularly limited.

A vaporizer 23 may be provided between the feed pump 20 and the power generation engine 50. The vaporizer 23 is configured to heat the liquefied gas to a required temperature of the power generation engine 50 similarly to the heat exchanger 22, can do. The heat source used by the vaporizer 23 is also not particularly limited.

The evaporative gas compressor (30) compresses the evaporated gas generated in the liquefied gas storage tank (10). The evaporative gas compressor 30 may be provided in the evaporative gas supply line 31 connected from the liquefied gas storage tank 10 to the power generation engine 50.

The number of stages of the evaporation gas compressor 30 may be varied depending on the required pressure of the power generation engine 50, the internal pressure of the liquefied gas storage tank 10, and the like. In addition, the evaporative gas compressor (30) may be provided in parallel for backup.

The evaporated gas compressed by the evaporative gas compressor 30 can be transferred to the power generation engine 50 along the evaporated gas supply line 31. The present invention further includes a boiler 51 for consuming the evaporated gas The evaporation gas may be delivered to the boiler 51 along the evaporation gas supply line 31 branching upstream of the power generation engine 50. [ In this case, the boiler 51 can preferentially consume the evaporative gas over the power generation engine 50, because the steam generated by the boiler 51 in the vessel 100 is used for a lot of places.

The propulsion engine 40 consumes the liquefied gas stored in the liquefied gas storage tank 10 to generate thrust. The propulsion engine 40 may be mechanically or electrically connected to the propeller. When the rotation axis of the propulsion engine 40 is rotated, the propeller rotates to generate a wake, thereby advancing the ship 100.

The propulsion engine 40 can consume liquefied gas of higher pressure than the power generation engine 50, and the high-pressure pump 21 is used in this case as described above.

The propulsion engine 40 may use oil having a liquid state at room temperature, such as diesel, instead of the liquefied gas, and the oil may be stored in the oil storage tank 90. The oil storage tank 90 may be disposed at a position spaced apart from or adjacent to the liquefied gas storage tank 10 in the hull and the oil supply line ) May be provided.

The power generation engine 50 consumes evaporated gas generated in the liquefied gas storage tank 10. It is needless to say that the power generation engine 50 may be provided to consume the liquefied gas of the liquefied gas storage tank 10 and may consume the aforementioned oil.

The power generation engine 50 can generate power by consuming the evaporated gas when the amount of the evaporated gas generated in the liquefied gas storage tank 10 is increased. In other words, the power generation engine 50 can consume the evaporation gas and can stably maintain the internal pressure of the liquefied gas storage tank 10. To this end, the power generation engine (50) can be adjusted in its operation (load) according to the amount of evaporated gas measured by the measuring part (11).

In the case of a general liquefied gas carrier, the evaporation gas was taken out and burned or re-liquefied in order to prevent the internal pressure of the liquefied gas storage tank 10 from becoming excessive. However, in the case of general merchant ships such as container ships other than liquefied gas carriers, there is not enough space to provide a gas-fired device or a liquefaction device that burns the vapor.

Therefore, it is necessary to use the power generation engine 50 to consume the evaporation gas. For example, when the power consumed in the state where the 14,000 TEU container ship is anchored is 1,000 kW, the power generation engine 50 is stored in the liquefied gas storage tank 10 The maximum generated power that can be generated by consuming the generated evaporative gas may be 1,590 kW which is more than 1,000 kW (liquefied gas storage tank 10 is a membrane type, having a volume of 7,000 m ³ and a BOR of 0.23% home).

Since the power consumption that can be consumed by the ship 100 is lower than the generated power of the power generation engine 50 in this manner, the capacity of the power generation engine 50 to process the evaporated gas is set to be 1,000 kW < / RTI > Therefore, the evaporative gas that can be consumed to generate the remaining 590 kW means that the power consumed by the ship 100 is insufficient to be consumed by the power generation engine 50.

In this case, the power generation engine 50 is not recognized as an evaporative gas treatment device capable of sufficiently treating the evaporated gas generated in the liquefied gas storage tank 10 to keep the liquefied gas storage tank 10 in a stable state. As a result, there arises a problem that the gas burning device or the liquefaction device must be mounted in some way on the container ship, which leads to the damage of the load 111 of the cargo 111.

However, in the present invention, among the maximum generated power generated when the power generation engine 50 processes the evaporative gas, the additional power consumed by the power consuming device 80 is limited by consuming power, It can be recognized as an evaporating gas processing apparatus.

Such a series of control will be described later.

The power management unit 60 calculates the limited additional power of the power consumed by the ship 100 in the generated power generated by the power generation engine 50 by consuming the evaporation gas. The generated power can be predicted, calculated or measured in consideration of the amount of the evaporated gas, the specification of the power generation engine 50, and the like.

The power consumption may be the power consumed by the ship 100 in an anchored state or the like, and may be the current power consumed, the power expected to be consumed in the future, and / or the minimum power consumed by the ship 100. [

The power management unit 60 can subtract the power consumption from the generated power to derive the additional power. Of course, if the amount of evaporative gas generated in the liquefied gas storage tank 10 is sufficient to produce power consumption and does not generate surplus, there may be no additional power and the operation of the power consuming device 80, Can not be achieved.

For this purpose, the power management unit 60 is provided to exchange information with the measuring unit 11 provided in the liquefied gas storage tank 10, and is also capable of receiving information such as liquefied gas such as the transfer pump 20 and the evaporative gas compressor 30, It is provided to exchange information with structures that process gas and vapor. This is because the load of the transfer pump 20 or the load of the evaporative gas compressor 30 means the amount of liquefied gas or evaporated gas.

The power management unit 60 can transmit the amount of the additional power to the power processing unit 70. [ At this time, as described below, the power processing unit 70 actually controls the flow of electric power. The power management unit 60 transmits the amount of additional power to the power processing unit 70 so that the power processing unit 70 can supply additional power And can be consumed by the power consumption device 80. [

The power processing unit 70 operates the power consumption device 80 provided in the ship 100 to consume additional power. Here, the power consumption device 80 includes a cargo 111 transport device 81 for transporting the cargo 111, a cargo hold 110 fan 82 provided in the hold 110 on which the cargo 111 is loaded, An air conditioning system 83 provided on the ship 100, and a balusting system 84. The air conditioning system 83 shown in FIG.

That is, the power consumption device 80 may be a device independent of the propulsion of the ship 100, and may mean a device capable of operating even when the ship 100 is stationary. The power consumption device 80 may include various devices in addition to the examples described above as an equipment that does not pose a problem to the safety of the ship 100 even when the ship 100 is operated at anchor.

The power processing unit 70 receives the generated power from the power generation engine 50 and can transmit the amount of generated power to the power management unit 60. [ The power processor 70 can also control the operation of the power consuming device 80 so as to correspond to the amount of the additional power transmitted from the power manager 60. [

The power processing unit 70 may include a switchboard 71 (SWBD) and a monitoring system 72. The generated power generated from the power generation engine 50 may be transmitted to the switchboard 71, Power generation power supply line 52 may be connected between power generation engine 50 and switch board 71.

The switch board 71 can deliver additional power to the power consuming device 80. [ An additional power consumption line 85 may be connected between the switch board 71 and the power consumption device 80. The switch board 71 may be connected to the power supply device 80 via a high voltage The switch board 71 and the low pressure switch board 71, but is not limited thereto.

The monitoring system 72 may be a CAMS (Control, Alarm & Monitoring System) and is connected to the switch board 71 to receive the amount of generated power from the switch board 71. The amount of generated power can be transmitted by the power information transmission line 721, which is connected between the switch board 71 and the monitoring system 72.

The monitoring system 72 can transmit the amount of the generated power received from the switchboard 71 to the power management unit 60 and the power information transmission line 721 is also provided between the monitoring system 72 and the power management unit 60. [ Can be provided.

In this case, the power management unit 60 connected by the monitoring system 72 and the power information transmission line 721 receives the amount of generated power from the monitoring system 72, calculates additional power in consideration of the power consumption, The amount of additional power can be transmitted to the monitoring system 72. [

That is, the amount of generated power can be transmitted in one direction to the power information transmission line 721 connected between the switchboard 71 and the monitoring system 72, and can be transmitted between the monitoring system 72 and the power management unit 60 In the connected power information transmission line 721, the amount of generated power can be transmitted in one direction, and the amount of additional power can be transmitted in the other direction.

The monitoring system 72 receives the amount of additional power from the power management unit 60 and controls the operation of the power consumption device 80 so that additional power is transmitted to the power consumption device 80 via the switchboard 71 .

That is, when the monitoring system 72 receives notification from the power management unit 60 that there is additional power, the monitoring system 72 confirms the amount of additional power from the power management unit 60, and controls the power consumption device 80 to operate by the amount of the additional power Or more.

In this case, power can be transferred from the switchboard 71 to the power consumption device 80 by the amount of additional power transmitted from the power management unit 60 to the monitoring system 72, and consumed. Therefore, the generated power generated while the power generation engine 50 processes the evaporated gas generated in the liquefied gas storage tank 10 is different from the power consumed by the ship 100 and the additional power consumed by the power consuming device 80 . ≪ / RTI >

For example, the cargo hold 110 fan 82 (220 kW), the ballast pump 250 kW constituting the ballast system, the A / C compressor 140 kW constituting the air conditioning system 83, When the power generation power generated by the power generation engine 50 consumes the evaporation gas generated in the liquefied gas storage tank 10 by 1,590 kW and the power consumption is 1,000 kW, And the monitoring calculation unit receives the amount of the additional power and controls the operation of the three power consumption devices 80 (total 610 kW) so that the power consumption of 590 kW or more can be consumed to consume additional power.

Therefore, the power processing unit 70 allows the additional power derived by the power management unit 60 to be consumed due to the operation or load increase of the power consumption device 80, which is not a problem for the operation or safety of the ship 100, The evaporated gas generated in the liquefied gas storage tank 10 is sufficiently treated by the power generation engine 50 (except for the consumption amount by the boiler 51 when the boiler 51 is provided) The device can be omitted.

The oil storage tank 90 stores oil that can be consumed by the propulsion engine 40, the power generation engine 50, the boiler 51, and the like described above. The oil stored in the oil storage tank 90 may mean all fuels that maintain a liquid state at room temperature, such as marine diesel oil.

The oil storage tank 90 may be provided inside the hull at a position spaced apart from the liquefied gas storage tank 10, for example, but not limited thereto, as shown in FIG.

The oil supply line is connected to the propulsion engine 40 or the like in the oil storage tank 90. The oil is delivered to the propulsion engine 40, the power generation engine 50, the boiler 51, (Not shown) may be provided in the oil supply line, and the valve may be opened or closed by the power management unit 60 or other control unit.

As described above, in the present embodiment, the power generation engine 50 can process all of the evaporative gas generated in the liquefied gas storage tank 10, so that even if the gas combustion device or the refueling device is not additionally provided, It is possible to maintain the internal pressure of the cargo container 10 in a safe range and to prevent the volume of the hold 110, which is the loading space of the cargo 111, from being reduced due to the installation of the gas- .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Gas treatment system 10: Liquefied gas storage tank
11: Measuring section 20: Feed pump
21: high-pressure pump 22: heat exchanger
23: vaporizer 24: liquefied gas supply line
30: Evaporative gas compressor 31: Evaporative gas supply line
40: propulsion engine 50: power generation engine
51: Boiler 52: Generated power supply line
60: power management unit 70:
71: Switch board 72: Monitoring system
721: Power information transmission line 722: Power consumption device control line
80: power consumption device 81: cargo transportation device
82: Cargo hold fan 83: Air conditioning system
84: Balusting system 85: Additional power consumption line
90: Oil storage tank 100: Ship
110: Hold 111: Freight
120: engine room

Claims (14)

In a gas treatment system mounted on a ship,
A liquefied gas storage tank for storing a liquefied gas to be used as fuel for propulsion of the ship;
A power generation engine that consumes evaporative gas generated in the liquefied gas storage tank;
A power management unit for calculating additional power limiting power consumption consumed by the ship from power generation power generated by the power generation engine by consuming the evaporation gas; And
And a power processor for controlling the operation of the power consumption device provided on the ship to consume the additional power. The power control apparatus according to claim 1,
Receives the generated power from the power generation engine, and transmits the generated power to the power management unit. 3. The method of claim 2,
The power management unit transmits the amount of the additional power to the power processing unit,
Wherein the power processing unit controls the operation of the power consumption device to correspond to the amount of the additional power transmitted from the power management unit. The power control apparatus according to claim 3,
A switch board for receiving the generated power from the power generation engine and transmitting additional power to the power consumption device; And
And a monitoring system for receiving the amount of generated power from the switch board and transmitting the received amount of generated power to the power management unit. The power control apparatus according to claim 4,
Receives an amount of the generated power from the monitoring system, and transmits the amount of the additional power to the monitoring system. 6. The system of claim 5,
Receives the amount of the additional power from the power management unit and controls the operation of the power consumption device so that the additional power is transmitted to the power consumption device through the switch board. 2. The liquefied gas storage tank according to claim 1,
And a measuring section for measuring an amount of evaporation gas generated inside the gas processing system. 8. The power generation system according to claim 7,
And the operation is controlled according to the amount of the evaporation gas measured by the measuring unit. The method according to claim 1,
Further comprising a boiler for consuming evaporative gas generated in said liquefied gas storage tank,
Wherein the boiler preferentially consumes the evaporated gas over the power generation engine. The ship according to claim 1,
Wherein the liquefied gas carrier is a general carrier except for the liquefied gas carrier. 11. The power consumption device according to claim 10,
A cargo hold device for holding the cargo, and a cargo hold fan for holding the cargo. The power consumption device according to claim 1,
The air conditioning system provided on the ship, and the balusting system provided on the ship. The method according to claim 1,
Further comprising a propulsion engine for consuming liquefied gas from said liquefied gas storage tank. 14. A ship having the gas treatment system according to any one of claims 1 to 13.

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