KR20190012027A - A Regasification System Of Gas and Vessel having the same - Google Patents

Abstract

A gas regeneration system according to the present invention includes: a vaporizer for regenerating a liquefied gas stored in a liquefied gas storage tank and supplying it to a customer; A first heat source supply device for delivering a first heat medium for vaporizing the liquefied gas to the vaporizing unit; A second heat source supply device for supplying a second heat medium to the first heat source to the first heat source supply device; And a third heat source supply device for supplying waste heat generated in the engine room to the second heat medium, wherein the third heat source supply device supplies the waste heat upstream of a pump for supplying the second heat medium .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas regeneration system and a vessel including the same,

The present invention relates to a gas regeneration system and a vessel including the same.

Generally, it is known that LNG is a clean fuel and its reserves are more abundant than petroleum, and its usage is rapidly increasing as mining and transfer technology develops. This LNG is generally stored in a liquid state at a temperature of -162 ° C. or less under 1 atm of the main component. The volume of liquefied methane is about 1/600 of the volume of methane in a gaseous state in a standard state, Is 0.42, which is about one half of the specific gravity of crude oil.

LNG is liquefied with ease of transportation and used after vaporizing at the place of use after transportation. However, due to the risk of natural disasters and terrorism, it is feared to install LNG vaporization equipment onshore.

As a result, in place of the conventional liquefied natural gas regeneration system installed on the land, a system for supplying natural gas that is vaporized on the land by installing a regeneration device on an LNG carrier carrying the liquefied natural gas Is in the spotlight.

In the LNG regasifier system, the LNG stored in the liquefied gas storage tank is pressurized by the booster pump and sent to the LNG vaporizer, which is vaporized by the LNG vaporizer and sent to the onshore consumer. Here, the height of the LNG on the LNG vaporizer is increased by the use of a seawater supply device in the process of heat exchange.

In the seawater supply system, seawater flows into or out of a seawater inlet or a seawater outlet constructed on a hull lower than sea level. When seawater enters the sea after being used for regeneration, there is a problem of environmental pollution. There was a problem that the supply of the heat quantity necessary for regeneration was unstable.

Accordingly, various techniques have been researched at present to solve the above problems.

SUMMARY OF THE INVENTION The present invention has been made to improve the prior art, and it is an object of the present invention to provide a ship having a gas regeneration system in which the regeneration efficiency of the liquefied gas can be maximized.

A gas regeneration system according to the present invention includes: a vaporizer for regenerating a liquefied gas stored in a liquefied gas storage tank and supplying it to a customer; A first heat source supply device for delivering a first heat medium for vaporizing the liquefied gas to the vaporizing unit; A second heat source supply device for supplying a second heat medium to the first heat source to the first heat source supply device; And a third heat source supply device for supplying waste heat generated in the engine room to the second heat medium, wherein the third heat source supply device supplies the waste heat upstream of a pump for supplying the second heat medium .

Specifically, the third heat source supply device includes an engine room cooling device for cooling heat generated in the engine room; A cooling pump for supplying cold heat to the engine room cooling device; A cooling line including the engine room cooling device and the cooling pump; And a branch line branched at the downstream of the engine room cooling device on the cooling line and supplying waste heat discharged from the engine room cooling device to the upstream of the pump.

Specifically, the second heat source supply device may include: a first heat exchanger for exchanging heat between the first heat medium and the second heat medium; The pump supplying the second heat medium to the first heat exchanger; And a second heat source supply line including the first heat exchanger and the pump, wherein the branch line may be connected upstream of the pump on the second heat source supply line.

Specifically, the first heat source supply device may include: a circulation pump that supplies the first heat medium to the vaporization unit; And a first heat source supply line including the circulation pump, the vaporizer, and the first heat exchanger.

Specifically, the first heat source supply device may further include a second heat exchanger for supplementarily supplying a heat source to the first heat medium.

Specifically, the first heat medium is a glycol water aqueous solution or propane, the second heat medium is seawater, the heat source added to the first heat medium of the second heat exchanger is steam, and the engine room cooling device The supplied cold heat may be seawater.

Specifically, the engine room cooling device is continuously supplied with cold heat to always cool the devices in the engine room.

Specifically, the engine room cooling apparatus may be a main central fresh water cooler or an ox-central fresh water cooler.

Specifically, the cooling pump is a sea water cold supply pump, the cooling line is a sea water supply line, the branch line is a sea water joining line, the first heat exchanger is a sea water heat exchanger, Pump, the second heat source supply line is a seawater line, the circulation pump is a heat medium circulation pump, the first heat source supply line is a heat medium circulation line, and the second heat exchanger may be a steam heat exchanger.

A liquefied gas supply line connecting the liquefied gas storage tank and the demander; A feeding pump provided on the liquefied gas supply line; A suction drum which is provided on the liquefied gas supply line and supplies the liquefied gas from the feeding pump to temporarily store the liquefied gas; And a booster pump that receives the liquefied gas from the suction drum and pressurizes the liquefied gas at a high pressure to supply it to the vaporizing unit.

Specifically, an evaporative gas compressor for pressurizing evaporative gas generated in the liquefied gas storage tank; And a power generation engine disposed in the engine room to generate power by being supplied with the evaporated gas pressurized from the evaporative gas compressor.

Specifically, it may be a vessel characterized by including the gas regeneration system.

The gas regeneration system according to the present invention and the ship including the same have the effect of maximizing the regeneration efficiency of the liquefied gas.

1 is a conceptual view of a ship having a gas regeneration system according to an embodiment of the present invention.
2 is a conceptual diagram of a vaporizer in a conventional gas regeneration system.
3 is a conceptual diagram of a gas regeneration 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, 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 encompass both NG (natural gas), which is a liquid state, and NG, which is a supercritical state for the sake of convenience. The LNG may be used to mean not only a gas state evaporation gas but also a liquefied evaporation gas .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual view of a ship having a gas regeneration system according to an embodiment of the present invention.

1, a ship 1 having a gas regeneration system 3 includes a liquefied gas storage tank 10, a feeding pump 20, a boosting pump 21, a suction drum 30, A vaporizer 40, an evaporative gas compressor 50, a first consumer 61, and a second consumer 62.

Here, the ship 1 equipped with the gas regeneration system 3 has a hull H composed of a bow portion (not shown), a stern portion (not shown), and an upper deck (not shown) The propeller shaft S is propelled by operating the propeller shaft S by transmitting the power produced by the engine E of the engine room (not shown) disposed in the stern section to the propeller P.

In order to enable the liquefied gas to be regenerated at sea and to supply the liquefied gas to the land terminal, the ship 1 is equipped with a liquefied gas regeneration vessel (LNG RV ) Or a floating liquefied gas storage and regasification facility (FSRU).

The gas regeneration system 3 according to the embodiment of the present invention will now be described with reference to Fig.

The gas regeneration system 3 according to the embodiment of the present invention extracts the liquefied gas in the liquid state from the liquefied gas storage tank 10 through the feeding pump 20 and drives the boosting pump 21 via the suction drum 30, The liquefied gas is heated and regenerated through the heat source in the vaporizing unit 40, and the liquefied gas is supplied to the first consumer 61. That is, in brief, the gas regeneration system 1 of the present invention regenerates the liquefied gas by using the gasification unit 40 and supplies it to the first demand site 61. At this time, the evaporated gas generated in the liquefied gas storage tank 10 is pressurized by the evaporative gas compressor 50 and supplied to the second customer 62 for processing.

The vaporizing section 40 can indirectly supply seawater from the seawater supply device (second heat source supply device; shown in FIG. 3) to regenerate the liquefied gas. (Indirect regeneration system: A system in which the heat source of the seawater is supplied from the heat exchanger 401 and the heat source supplied from the first fruit with the seawater is supplied to the vaporizer 40)

It should be noted that in all the embodiments of the present invention, the indirect regeneration method will be described on the basis of the indirect regeneration method, which is for convenience of explanation, and is not particularly limited in the present invention.

Prior to describing the individual configurations of the gas regeneration system 3 according to the embodiment of the present invention, the basic flow paths for organically connecting the individual structures will be described. Here, the passage is a passage through which the fluid flows, and may be a line. However, the present invention is not limited thereto.

In the embodiment of the present invention, the liquefied gas first supply line L1, the liquefied gas second supply line L2, and the evaporation gas supply line L3 may be further included. Valves (not shown), which are adjustable in opening degree, may be installed in each line, and the supply amount of the evaporation gas or liquefied gas may be controlled according to the opening degree of each valve.

The liquefied gas first supply line L1 connects the liquefied gas storage tank 10 and the suction drum 30 and has a feeding pump 20 to supply the liquefied gas stored in the liquefied gas storage tank 10 to the feeding pump 10, To the suction drum (30) through the suction port (20). At this time, the liquefied gas first supply line L1 may be connected to the suction drum 30 and may be branched at the upstream of the suction drum 30 and directly connected to the liquefied gas second supply line L2.

The liquefied gas second supply line L2 is connected to the suction drum 30 and the first consumer 61 and has a booster pump 21 and a vaporizer 40 so that the liquefied gas is supplied to the suction drum 30, The liquefied gas directly supplied from the gas or liquefied gas first supply line L 1 can be pressurized by the booster pump 21 and regenerated by the gasification unit 40 to be supplied to the first customer 61.

The evaporation gas supply line L3 connects the liquefied gas storage tank 10 and the second consumer site 62 and includes an evaporative gas compressor 50 to supply the evaporated gas generated in the liquefied gas storage tank 10 And can be supplied to the second customer 62 by being pressurized by the evaporative gas compressor 50.

Hereinafter, the individual configurations of the gas regeneration system 1 that are organically formed by the above-described respective lines L1 to L3 will be described.

The liquefied gas storage tank 10 stores liquefied gas to be supplied to the first customer 61. The liquefied gas storage tank 10 must store the liquefied gas in a liquid state, at which time the liquefied gas storage tank 10 may have the form of a pressure tank.

Here, the liquefied gas storage tank 10 is disposed inside the hull H, and four liquefied gas storage tanks 10 may be formed in front of the engine room. In addition, the liquefied gas storage tank 10 is not particularly limited to various types such as a membrane-type tank or an independent tank, for example.

The feeding pump 20 is provided on the liquefied gas first supply line L1 and is provided inside or outside the liquefied gas storage tank 10 to supply the liquefied gas stored in the liquefied gas storage tank 10 to the suction drum 30).

Specifically, the feeding pump 20 is provided between the liquefied gas storage tank 10 and the suction drum 30 on the liquefied gas first supply line L 1 to store the liquefied gas stored in the liquefied gas storage tank 10 And can be firstly pressurized and supplied to the suction drum 30.

The feeding pump 20 can pressurize the liquefied gas stored in the liquefied gas storage tank 10 to 6 to 8 bar and supply it to the suction drum 30. [ Here, the feeding pump 20 may pressurize the liquefied gas discharged from the liquefied gas storage tank 10 so that the pressure and the temperature may be somewhat higher, and the pressurized liquefied gas may still be in a liquid state.

In this case, the feeding pump 20 may be a submergible pump when it is provided inside the liquefied gas storage tank 10 and may be a pump that is stored in the liquefied gas storage tank 10 when it is installed outside the liquefied gas storage tank 10. May be provided at a position inside the hull (H) lower than the level of the liquefied gas and may be a centrifugal pump.

The boosting pump 21 may be provided between the suction drum 30 and the evaporator 40 on the liquefied gas second supply line L2 and may be provided between the liquefied gas supplied from the feeding pump 20 or the suction drum 30 may be supplied to the vaporization unit 40 by pressurizing the liquefied gas at 80 to 120 bar.

The boosting pump 21 can pressurize the liquefied gas in accordance with the pressure demanded by the first customer 61 and can be constituted by a centrifugal pump.

The suction drum 30 is connected to the liquefied gas first supply line L1 and can receive the liquefied gas from the liquefied gas storage tank 10 and temporarily store the liquefied gas.

Specifically, the suction drum 30 can receive the liquefied gas stored in the liquefied gas storage tank 10 from the feeding pump 20 through the liquefied gas first supply line L1, The liquefied gas can be separated into a liquid phase and a vapor phase by storage, and the separated liquid phase can be supplied to the boosting pump 21.

That is, the suction drum 30 temporarily stores the liquefied gas to separate the liquid phase and the vapor phase, and supplies the complete liquid phase to the boosting pump 21 so that the boosting pump 21 satisfies the effective suction head NPSH , Thereby preventing cavitation in the boosting pump (21).

The vaporizing section 40 is provided on the liquefied gas second supply line L2 to regenerate the high-pressure liquefied gas discharged from the booster pump 21.

Specifically, the vaporizing unit 40 is provided on the liquefied gas second supply line L2 between the first customer 61 and the boosting pump 21 and is composed of the vaporizer 41 and the trim heater 42, The high-pressure liquefied gas supplied from the boosting pump 21 is vaporized through the vaporizer 41 and then heated to a desired temperature through the trim heater 42 to be supplied to the first customer 61 have.

The vaporization part 40 in the conventional gas processing system 2 will now be described in detail with reference to FIG.

2 is a conceptual diagram of a vaporization portion in a conventional gas regeneration system.

2, the vaporization unit 40 in the conventional gas regeneration system 2 is supplied with the first heat through the heat medium circulation line GL and exchanges heat with the liquefied gas to vaporize the liquefied gas , The high-pressure vaporized liquefied gas can be supplied to the first customer 61 without pressure fluctuation. Where the first heat exchanged with the liquefied gas is again circulated through the heat medium circulation line (GL).

In the conventional gas regeneration system 2, the vaporization unit 40 further includes a steam heat exchanger 402 in addition to the seawater heat exchanger 401 in a configuration for transferring the heat source to the intermediate fruit. The seawater heat exchanger 401 is supplied with seawater by a seawater pump SWP provided in the seawater line SWL and the steam heat exchanger 402 can receive steam through the steam line STL.

A conventional gas regeneration system 2 as described above is further improved to develop a regeneration system capable of improving regeneration performance and optimizing energy, and will be described with reference to FIG. 3. FIG.

In FIG. 2, reference numerals 402a and 403 denote the bypass valve 402a and the heating medium circulation pump 403, respectively, and the vaporizing section 40 of the gas processing system 3 according to the embodiment of the present invention The description will be described in detail.

3 is a conceptual diagram of a gas regeneration system according to an embodiment of the present invention.

3, the vaporization unit 40 in the gas regeneration system 3 according to the embodiment of the present invention includes a vaporizer 41, a trim heater 42, a heating medium circulation line GL, A steam heat exchanger 402, a heating medium circulation pump 403, an engine room cooling device 70 and a sea water heat supply pump 71. The seawater heat exchanger 401, the steam heat exchanger 402,

In the embodiment of the present invention, the vaporizing section 40 includes a first heat source supply device for delivering a first heat medium for vaporizing liquefied gas to a vaporizing section (the vaporizer 41 and the trim heater 42) A second heat source supply device for supplying the second heat medium to the first heat source supply device, and a third heat source supply device for supplying waste heat generated in the engine room to the second heat medium. Further, the third heat source supply device can supply waste heat generated in the engine room upstream of the seawater pump (SWP) for supplying the second heat medium.

Here, the first heat source supply device includes a steam heat exchanger 402, a heat medium circulation pump 403 and a heat medium circulation line GL, and the second heat source supply device includes a seawater heat exchanger 401, a seawater pump SWP And the seawater line SWL and the third heat source supply device includes an engine room cooling device 70, a seawater cold heat supply pump 71, a seawater supply line SWL1 and a seawater confluence line SWL2 .

The first heat medium may be an aqueous Glycol Water solution or propane, the second heat medium may be seawater, and the cold heat supplied to the engine room cooling device 70 may be seawater .

The heating medium circulation line GL includes a vaporizer 41, a trim heater 42, a seawater heat exchanger 401, a steam heat exchanger 402 and a heating medium circulation pump 403. The first heating medium circulates, The liquefied gas can be vaporized by supplying a heat source to the heat source 41 or the trim heater 42.

Here, the heat medium circulation line GL may be arranged in the order of a heat medium circulation pump 403, a steam heat exchanger 402, a seawater heat exchanger 401, a trim heater 42, and a vaporizer 41.

The seawater heat exchanger 401 is provided between the steam heat exchanger 402 and the trim heater 42 on the heating medium circulation line GL and is connected to the seawater pump 402 via the seawater pump SWP on the seawater line SWL, The steam heat exchanger 402 can heat the preheated first heat medium.

Here, the seawater heat exchanger 401 is supplied with a large amount of seawater and is responsible for substantial heating of the first heat medium.

The seawater line SWL can be connected to the seawater confluence line SWL2 upstream of the seawater pump SWP and can receive the waste heat generated in the engine room through seawater supplied to the seawater confluence line SWL2.

Accordingly, in the embodiment of the present invention, the seawater absorbing the waste heat generated in the engine room at the upstream of the seawater pump (SWP) joins immediately, so there is no need for subsequent pressurization, resulting in power saving and cost reduction.

Specifically, in the embodiment of the present invention, the seawater absorbing the waste heat generated in the engine room downstream of the seawater pump (SWP) is not constituted so as to be joined, but is merged upstream, This eliminates the need for subsequent pressurization and reduces costs.

The steam heat exchanger 402 is provided between the heating medium pump 403 on the heating medium circulation line GL and the seawater heat exchanger 401 and is supplied with steam by the steam line STL to preheat the first heating medium have.

Here, the steam heat exchanger 402 heats the first heating medium through the steam supplied from the second customer 62 (preferably, the boiler), and is responsible for auxiliary heating of the first heating medium.

The steam heat exchanger 402 further includes a bypass line BL connecting the front end and the rear end of the steam heat exchanger 402 and a bypass valve 402a provided on the bypass line BL .

In the embodiment of the present invention, when the temperature of the intermediate fruit is likely to overheat, the bypass valve 402a on the bypass line BL is opened to bypass the steam heat exchanger 402, (401).

The heat medium circulation pump 403 is provided between the vaporizer 41 on the heat medium circulation line GL and the steam heat exchanger 402 and circulates the first heat medium on the heat medium circulation line GL, (The first heater 41 and the trim heater 42).

The heat medium circulation pump 403 may supply the first heat medium cooled by the vaporizer 41 to the steam heat exchanger 402, and may be a centrifugal pump, for example.

In the embodiment of the present invention, the seawater supply line SWL1 including the engine room cooling device 70 and the seawater cold heat supply pump 71 and the seawater supply line SWL2 downstream of the engine room cooling device 70 on the seawater supply line SWL1 And a seawater confluence line SWL2 that is branched and connected to the upstream of the seawater pump SWP on the seawater line SWL.

Here, the seawater confluence line SWL2 can supply the waste heat discharged from the engine room cooling device 70 to the upstream of the seawater pump SWP.

Hereinafter, the engine room cooling device 70 and the sea water heat supply pump 71 will be described.

The engine room cooling device 70 can cool the heat generated in the engine room. Specifically, the engine room cooling apparatus 70 is constantly supplied with seawater (cold heat) to always cool the devices in the engine room.

The engine room cooling device 70 may include a main central FW cooler or an Aux Central FW cooler and the main central fresh water cooler may include a power generation engine 62, And the OXCENTRAL fresh water cooler may be a cooling device through seawater capable of fully cooling other heat exchange devices except the power generation engine 62 in the engine room, Lt; / RTI >

That is, in the embodiment of the present invention, the engine room cooling apparatus 70 for continuously supplying the seawater to the engine room cooling apparatus 70 is selected from among the apparatuses for cooling the apparatuses in the engine room, By supplying the steam to the upstream of the pump (SWP), it is possible to supply a continuous and balanced heat source to the seawater heat exchanger (401), thereby maximizing the regeneration efficiency and improving the system stability.

The seawater cold heat supply pump 71 is provided upstream of the engine room cooling apparatus 70 on the seawater supply line SWL1 and flows seawater for supplying cold heat onto the seawater supply line SWL1, (Cold heat) to the heat exchanger 70.

The seawater cold heat supply pump 71 may receive seawater from a sea chest, which is a sea water source, and supply the seawater to the engine room cooling device 70, for example, a centrifugal type pump.

Here, the sea water cold heat supply pump 71 discharges the seawater from the engine room cooling device 70 after recovering the waste heat generated in the engine room, and then flows on the seawater confluence line SWL2, It can be supplied upstream.

The evaporative gas compressor (50) can pressurize the evaporated gas generated in the liquefied gas storage tank (10) and supply it to the second customer (62).

Specifically, the evaporative gas compressor 50 is provided on the evaporation gas supply line L3 to pressurize the evaporation gas generated in the liquefied gas storage tank 10 to about 6 to 8 bar or 6 to 15 bar, 62, respectively.

A plurality of evaporation gas compressors 50 may be provided to press the evaporation gas at multiple stages. For example, three evaporation gas compressors 50 may be provided to pressurize the evaporation gas at three stages. The example three-stage compressor is only one example and is not limited to the three stages.

In the embodiment of the present invention, an evaporative gas cooler (not shown) may be provided at each rear end of the evaporative gas compressor 50. When the evaporation gas is pressurized by the evaporation gas compressor 50, the temperature can also be raised according to the pressure increase. Therefore, in this embodiment, the evaporation gas cooler can be used to lower the temperature of the evaporation gas again. The evaporative gas cooler may be installed in the same number as the evaporative gas compressor 50, and each evaporative gas cooler may be provided downstream of each evaporative gas compressor 50.

Further, in the embodiment of the present invention, when the evaporation gas compressor 50 is provided in parallel and the amount of the evaporation gas generated in the liquefied gas storage tank 10 rapidly increases, When one of the evaporator 50 and the evaporator 50 malfunctions or shut down, the other evaporator gas compressor 50 can be operated to efficiently receive and process the evaporated gas generated in the liquefied gas storage tank 10 .

The first consumer 61 can supply and consume the liquefied gas vaporized by the vaporizing unit 40. Here, the first customer 61 may be a land terminal installed on the land, or a marine terminal floated on the sea, by vaporizing the liquefied gas and supplying and using the gaseous liquefied gas.

The second customer 62 uses the evaporated gas generated from the liquefied gas storage tank 10 as a fuel. That is, the second customer 62 needs evaporation gas and can be driven using the gas as a raw material. The second customer 62 may be, but is not limited to, a power generation engine (e.g., DFDG), a gas combustion unit (GCU), a boiler (e.g.

Specifically, the second customer 62 is connected to the evaporation gas supply line L3 to receive the evaporation gas, and the evaporation gas compressed by the evaporation gas compressor 50 at a low pressure of about 1 to 6 bar (maximum 15 bar) It can be used as fuel.

In addition, the second customer 62 may be a heterogeneous fuel engine capable of using a heterogeneous fuel, so that not only evaporation gas but also oil can be used as the fuel. However, when the evaporation gas and the oil are not mixed and supplied, As shown in FIG. This is to prevent the mixture of two materials having different combustion temperatures from being mixed, thereby preventing the efficiency of the second customer 62 from deteriorating.

Here, the second customer 62 may be provided on a deck (not shown) of the engine room provided inside the stern section.

As described above, the ship 1 having the gas regeneration system 3 according to the present invention has the effect of maximizing the regeneration efficiency of the liquefied 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: Ship 2: Conventional gas regeneration system
3: Gas regeneration system of the present invention 10: Liquefied gas storage tank
20: Feeding pump 21: Boosting pump
30: Suction drum 40:
41: carburetor 42: trim heater
401: Sea water heat exchanger 402: Steam heat exchanger
402a: Bypass valve 403: Heat medium circulation pump
50: Evaporative gas compressor 61: First demand source
62: second demand point 70: engine room cooling device
71: Sea water heat pump
L1: liquefied gas first supply line L2: liquefied gas second supply line
L3: Evaporative gas supply line BL: Bypass line
GL: Heat medium circulation line STL: Steam line
SWL: Sea water line SWP: Sea water pump
SWL1: Seawater supply line SWL2: Seawater supply line

Claims (12)

A vaporizer for regenerating the liquefied gas stored in the liquefied gas storage tank and supplying it to a customer;
A first heat source supply device for delivering a first heat medium for vaporizing the liquefied gas to the vaporizing unit;
A second heat source supply device for supplying a second heat medium to the first heat source to the first heat source supply device; And
And a third heat source supply device for supplying waste heat generated in the engine room to the second heat medium,
Wherein the third heat source supply device comprises:
And the waste heat is supplied upstream of the pump for supplying the second heat medium. The apparatus according to claim 1, wherein the third heat source supply device comprises:
An engine room cooling device for cooling the heat generated in the engine room;
A cooling pump for supplying cold heat to the engine room cooling device;
A cooling line including the engine room cooling device and the cooling pump; And
And a branch line branched at the downstream of the engine room cooling device on the cooling line and supplying the waste heat discharged from the engine room cooling device to the upstream of the pump. The apparatus according to claim 2, wherein the second heat source supply device comprises:
A first heat exchanger for exchanging heat between the first heat medium and the second heat medium;
The pump supplying the second heat medium to the first heat exchanger; And
And a second heat source supply line including the first heat exchanger and the pump,
The branch line includes:
And is connected upstream of the pump on the second heat source supply line. 4. The apparatus according to claim 3, wherein the first heat source supply device comprises:
A circulation pump for supplying the first heating medium to the vaporizing unit; And
And a first heat source supply line including the circulation pump, the vaporizer, and the first heat exchanger. 5. The apparatus according to claim 4, wherein the first heat source supply device comprises:
Further comprising a second heat exchanger for supplementarily supplying a heat source to the first heat medium. 6. The method of claim 5,
Wherein the first heating medium is a glycol water aqueous solution or propane,
Wherein the second heating medium is seawater,
The heat source added to the first heat medium of the second heat exchanger is steam,
Wherein the cold heat supplied to the engine room cooling device is seawater. 7. The engine room cooling apparatus according to claim 6,
And continuously supplying cold heat to always cool the devices in the engine room. 8. The engine room cooling apparatus according to claim 7,
A main central fresh water cooler or an ox-central fresh water cooler. The method according to claim 6,
The cooling pump is a sea water heat supply pump,
The cooling line is a sea water supply line,
Wherein the branch line is a seawater merging line,
The first heat exchanger is a seawater heat exchanger,
The pump is a seawater pump,
The second heat source supply line is a sea water line,
The circulation pump is a heat medium circulation pump,
Wherein the first heat source supply line is a heat medium circulation line,
Wherein said second heat exchanger is a steam heat exchanger. The method according to claim 1,
A liquefied gas supply line connecting the liquefied gas storage tank and the demander;
A feeding pump provided on the liquefied gas supply line;
A suction drum which is provided on the liquefied gas supply line and supplies the liquefied gas from the feeding pump to temporarily store the liquefied gas; And
Further comprising a boosting pump which is supplied with the liquefied gas from the suction drum and pressurizes the liquefied gas at a high pressure to supply it to the vaporizing unit. 11. The method of claim 10,
An evaporative gas compressor for pressurizing the evaporative gas generated in the liquefied gas storage tank; And
Further comprising a power generation engine disposed in the engine room for generating power by being supplied with the pressurized evaporated gas from the evaporative gas compressor. A vessel comprising the gas regeneration system of any one of claims 1 to 11.

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