KR20160083439A - A Treatment System Of Liquefied Gas - Google Patents

Abstract

The present invention relates to a liquefied gas processing system which includes: a first fuel storage tank storing ethane; a second fuel storage tank storing fuel except ethane; a hybrid pump pressurizing the ethane, supplied from the first fuel storage tank, or the fuel supplied from the second fuel storage tank; and a hybrid head exchanger heating the ethane or fuel pressurized by the hybrid pump. The ethane, supplied from the first fuel storage tank, or the fuel, supplied from the second fuel storage tank, is joined before being supplied to the hybrid pump. According to the present invention, the liquefied gas processing system is securing the flexibility of a vessel owner for the selection of fuel, and smoothly supplying propelling fuel for a vessel since ethane or liquefied natural gas is able to be used at the same time or different times by including both the ethane processing system and the liquefied gas processing system together. Moreover, when the present invention is applied to an ethane carrier, the present invention is capable of enhancing the performance of transferring ethane by reducing the size of a liquefied natural gas storage tank and then storing more ethane as a benefit in return.

Description

Description of the Related Art A Treatment System Of Liquefied Gas

The present invention relates to a liquefied gas processing system.

A ship is a means of transporting large quantities of minerals, crude oil, natural gas, or several thousand containers. It is made of steel and buoyant to float on the water surface. The thrust generated by rotation of the propeller ≪ / RTI >

Such a ship generates thrust by driving the engine. At this time, the engine uses gasoline or diesel to move the piston so that the crankshaft is rotated by the reciprocating motion of the piston, so that the shaft connected to the crankshaft is rotated to propel the propeller .

However, in recent years, an LNG fuel supply method for driving an engine using LNG as a fuel has been used in an LNG carrier carrying LNG (Liquefied Natural Gas) It is also applied to ships other than the carrier.

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. These LNGs are generally stored in a liquid state at a temperature of -162 ° C. or less under a pressure of 1 atm, which is the main component of methane (80 to 90%). The volume of liquefied methane is 600 And the specific gravity is 0.42, which is about one half of the specific gravity of crude oil.

In addition to methane, these LNG contain hydrocarbons such as ethane, butane, and propane. As for the hydrocarbons, carbon and hydrogen are bonded at a ratio of n: 2n + 2 with methane (CH4), ethane (C2H6), butane (C4H10) and propane (C3H8) In a normal temperature condition, a light substance becomes a gas, a heavy substance becomes a liquid, and a heavier substance becomes a solid state.

LNG is the origin of petroleum. When we look at the production process of LNG, it is produced as a polymer substance with a very high n value when it is first produced, and gradually becomes a light state material with high chemical stability after a lapse of time. Therefore, at first, the substances that were only in the oil state gradually become methane.

The temperature goes up to the ground and the pressure increases more than the temperature. Thus, petroleum is more dense in the ground (solid> liquid> gas). Therefore, in the underground pressure and temperature conditions, most of the petroleum is in the liquid state, but in some cases it is dissolved gas in which some gas components are dissolved in the liquid substances.

In some cases, petroleum is in a gaseous state withstood all these conditions. In this case, gaseous substances that are lighter than liquid are gathered like caps on the liquids, which is called a gas cap.

Most of the gas caps are made of the lightest methane, so gas caps must be light enough to withstand the liquefaction conditions. The production of materials under the ground in the form of gas is called Dry Gas, which is called Natural Gas (NG).

As such, natural gas contains a large amount of methane and less ethane. Therefore, when ethane is used as fuel, it is necessary to refine and separate ethane from LNG, and a small amount of ethane is supplied so that the price of methane is considerably higher than that of methane. Therefore, ethane carriers carrying ethane have not used ethane as propellant, but have used relatively cheap LNG as propellant.

In these market conditions, the mass production of US shale gas has increased the supply of ethane, which is abundantly contained in shale gas. As a result, the price of ethane has begun to be set equal to the price of LNG, which reflects the market needs of propane-fueled fuels, and numerous research and development efforts have been made to use ethane as propellant fuel .

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 liquefied natural gas (LPG) process for using ethane as a main fuel and a liquefied natural gas as an auxiliary fuel System.

It is also an object of the present invention to provide a liquefied gas processing system for allowing a liquefied natural gas storage tank to be located on a deck so that boiling pump can be omitted when liquefied natural gas is used as fuel.

A liquefied gas processing system according to an embodiment of the present invention includes: a first fuel storage tank for storing ethane; A second fuel storage tank for storing fuel other than ethane; A hybrid pump for pressurizing the fuel supplied from the second fuel storage tank or the ethane supplied from the first fuel storage tank; And a hybrid heat exchanger for heating pressurized ethane or fuel in the hybrid pump, wherein the fuel supplied from the first fuel storage tank or the fuel supplied from the second fuel storage tank is combined before being supplied to the hybrid pump .

A first fuel supply line connecting the first fuel storage tank and the hybrid pump; And a second fuel supply line connecting the second fuel storage tank and a demand point, wherein the first fuel supply line can be connected between the second fuel storage tank on the second fuel supply line and the hybrid pump have.

Specifically, the customer may be a high-pressure gas injection engine (ME-GI).

Specifically, the fuel other than the ethane may be liquefied natural gas (LNG).

Specifically, the hybrid fuel pump may further include a temporary storage tank for temporarily storing the fuel or the fuel between the hybrid pump and the first fuel storage tank or the second fuel storage tank.

Specifically, the ethane stored in the first fuel storage tank and the fuel stored in the second fuel storage tank may be supplied to the hybrid pump at the same time.

Specifically, the ethane stored in the first fuel storage tank or the fuel stored in the second fuel storage tank may be selectively supplied to the hybrid pump at this time.

Specifically, the ethane stored in the first fuel storage tank may be preferentially supplied to the hybrid pump.

Specifically, a first auxiliary pump for supplying ethane stored in the first fuel storage tank to the hybrid pump; And a second auxiliary pump for supplying fuel stored in the second fuel storage tank to the hybrid pump.

The liquefied gas processing system according to the present invention, together with an ethane treatment system and a liquefied natural gas treatment system, can use ethane or liquefied natural gas simultaneously or at the same time, , It is possible to secure the selection flexibility of the ship owner for the fuel.

In addition, when applied to an ethane carrier, the size of a liquefied natural gas storage tank for storing liquefied natural gas can be reduced, and the amount of ethane can be further stored in the opposite side, thereby increasing the ability to transport ethane.

1 is a conceptual view showing a side of a ship.
2 is a conceptual view of a ship equipped with a liquefied-gas treatment system according to a first embodiment of the present invention.
3 is a conceptual view of a ship equipped with a liquefied gas processing system according to a second embodiment of the present invention.
4 is a conceptual view of a ship equipped with a liquefied gas processing system according to a third embodiment of the present invention.
5 is a conceptual view of a ship equipped with a liquefied gas processing system according to a fourth 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 have the same numerical numbers 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.

Fig. 1 is a conceptual view showing a side of a ship, and Fig. 2 is a conceptual view of a ship equipped with a liquefied gas processing system according to a first embodiment of the present invention.

1 and 2, the liquefied gas processing system 100 according to the first embodiment of the present invention includes a first fuel processing system 2, a second fuel processing system 3, and a demander 20 .

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.

Referring to Fig. 1, generally, the ship 1 carries large quantities of minerals, crude oil, natural gas, or several thousand or more containers on the deck upper part 1b or deck lower part 1c on the basis of the deck 1a, As a means of sailing, it is made of steel and moves through the thrust generated through the process of consumption of the thrust fuel by the consumer 20 in a floating state on the water surface by buoyancy.

Conventionally, an LNG fuel supply system for driving an engine 20 using LNG as thrust fuel has been used in an LNG carrier carrying Liquefied Natural Gas. LNG has been attracting attention as a propellant because it is inexpensive, its reserves are abundant, and it does not pollute the environment. Ethane, on the other hand, was expensive to produce and was not used as propellant because of its high production costs and high price.

Unlike the conventional situation, the shale gas which has not been developed due to the technical constraints has been actively developed and produced by the development of science. The ethane is the largest portion of the shale gas, and mass production of the shale gas The production of ethane is increasing rapidly.

Therefore, as the demand for ethane carriers for transporting these ethane surges, the price competitiveness of the ethane has increased, and attempts have been made to use ethane as a propellant. Also, a propane engine using ethane as fuel has been commercialized. The Applicant has developed a system for using ethane as propellant fuel.

Hereinafter, a method of driving the engine 20 by using ethane as the main thrust fuel in a vessel 1 (preferably an ethane carrier) that transports ethane will be described.

The first fuel processing system 2 includes a first fuel storage tank 10, a first pump 30, a first heat exchanger 40, a first pressure regulating means (12).

The first fuel storage tank 10 may store ethane, and a plurality of the first fuel storage tanks 10 may store ethane to transport a large amount of ethane. The first fuel storage tank 10 must store ethane in a liquid state, at which time the first fuel storage tank 10 may have the form of a pressure tank.

In addition, the first fuel storage tank 10 may have a thermal insulation structure for storing cryogenic ethane having a boiling point of minus 89 degrees Celsius in a liquid state.

In the first embodiment of the present invention, the first fuel supply line 11 may be further included. The first fuel supply line 11 can supply the ethane by connecting the first fuel storage tank 10 and the demander 20 and can supply the first pressure regulating means 12, 1 main pump 32, and a first heat exchanger 40.

The first fuel supply line 11 can join the second fuel supply line 51 to be described later between the first heat exchanger 40 and the customer 20 and will be described in detail below. At this time, a supply valve (not shown) is provided in each of the first fuel supply lines 11 so that the supply amount of ethane can be adjusted according to the opening degree of the supply valve.

The first pressure regulating means 12 is provided on the first fuel supply line 11 to regulate the pressure of the ethane supplied from the first heat exchanger 40. Specifically, the first pressure regulating means 12 is provided between the first heat exchanger 40 on the first fuel supply line 11 and the demander 20, (20).

In addition, the first pressure regulating means 12 can lower the pressure of the ethane to regulate the pressure of the second fuel supplied to the customer 20 because the pressure of the ethane supplied to the customer 20 is much higher than the pressure of the second fuel supplied to the customer 20. That is, the first pressure regulating means 12 may be a pressure reducing means.

The first pump 30 may include a first auxiliary pump 31 and a first main pump 32 and may be used to supply or pressurize the ethane.

The first auxiliary pump 31 may first pressurize the ethane stored in the first fuel storage tank 10 and supply it to the first main pump 32. [ Specifically. The first auxiliary pump 31 is provided on the first fuel supply line 11 between the first fuel storage tank 10 and a first main pump 32 to be described later and is connected to the first fuel storage tank 10 The stored ethane can be supplied to the first main pump 32. [

The first auxiliary pump 31 may be provided inside the first fuel storage tank 10 or at a position lower than the level of the ethane stored in the first fuel storage tank 10, It can be type.

The first main pump 32 can pressurize the first pressurized ethane from the first auxiliary pump 31 to the second pressure and pressurize it to about 400 to 600 bar. Specifically, the first main pump 32 may be provided between the first auxiliary pump 31 and the first heat exchanger 40, which will be described later, on the first fuel supply line 11, The pressurized ethane can be supplied to the first heat exchanger (40).

The first heat exchanger (40) heats the pressurized ethane in the first pump (30). Specifically, the first heat exchanger 40 is provided between the consumer 20 and the first main pump 32 on the first fuel supply line 11, Ethane to the temperature required by the consumer 20.

The second fuel processing system 3 includes a second fuel storage tank 50, a second pump 60, and a second heat exchanger 70 as a processing system for using a fuel other than ethane as propellant fuel.

The second fuel storage tank 50 may store fuel other than ethane, and the fuel other than ethane may be liquefied natural gas, that is, LNG. The second fuel storage tank 50 must contain a fuel other than ethane in a liquid state, wherein the second fuel storage tank 50 may have the form of a pressure tank, The storage amount may be relatively small.

Hereinafter, the fuel other than ethane is described on the basis of liquefied natural gas (LNG), but is not limited thereto and may be a fuel (for example, oil) used in the ship 1.

The second fuel storage tank 50 includes an outer tank (not shown), an inner tank (not shown), and a heat insulating portion (not shown). The outer tank is a structure constituting the outer wall of the second fuel storage tank 50, and may be formed of steel, and may have a polygonal cross section.

The inner tank is provided inside the outer tank, and can be supported and supported inside the outer tank by a support (not shown). At this time, the support may be provided on the lower end of the inner tank, and may be provided on the side of the inner tank for suppressing lateral movement of the inner tank.

The tanks may be made of stainless steel and designed to withstand pressures from 1 bar to 10 bar (6 bar, for example). The reason why the inner tank is designed to withstand such a constant pressure is that the inner pressure of the inner tank can be increased as the liquefied gas contained in the inner tank is evaporated and the evaporation gas is generated.

A baffle (not shown) may be provided in the inner tank. The baffle means a plate in the form of a lattice. As the baffle is installed, the pressure inside the tank can be evenly distributed to prevent the tank pressure from being concentrated to a part of the tank.

The heat insulating portion is provided between the inner tank and the outer tank and can prevent the external heat energy from being transmitted to the inner tank. At this time, the heat insulating portion may be in a vacuum state. By forming the adiabatic portion in a vacuum, the second fuel storage tank 50 can more efficiently withstand high pressures as compared to conventional tanks. For example, the second fuel storage tank 50 may sustain a pressure of 5 to 20 bar through the vacuum insulation.

As described above, in the first embodiment of the present invention, the use of the pressure-tank-type second fuel storage tank (50) having a vacuum-type heat insulating portion between the outer tanks and the inner tank makes it possible to minimize the generation of the evaporative gas, It is possible to prevent a problem such as breakage of the second fuel storage tank 50 from occurring.

In the first embodiment of the present invention, a second fuel supply line 51 may be further included. The second fuel supply line 51 can supply the ethane by connecting the second fuel storage tank 50 and the demander 20 and can supply the second pressure regulating means 52, 2 main pump 62, and a second heat exchanger 70, as shown in FIG.

The second fuel supply line 51 can be constructed such that the first fuel supply line 11 can be joined between the second heat exchanger 70 and the consumer 20 and can be mixed with the ethane heated or heated liquefied natural Gas can be mixed and supplied.

At this time, a supply valve (not shown) is provided in each of the second fuel supply lines 51 so that the supply amount of the liquefied natural gas can be adjusted according to the opening degree of the supply valve.

The second pressure regulating means 52 is provided on the second fuel supply line 51 to regulate the pressure of the liquefied natural gas supplied from the second heat exchanger 70. Specifically, the second pressure regulating means 52 is provided between the second heat exchanger 70 on the second fuel supply line 51 and the demander 20 to supply the liquefied natural gas Can be supplied to the customer 20.

The second pump 60 may include a second auxiliary pump 61 and a second main pump 62 and may be used to supply or pressurize liquefied natural gas.

The second auxiliary pump 61 may first pressurize the liquefied natural gas stored in the second fuel storage tank 50 and supply the pressurized natural gas to the second main pump 62. Specifically. The second auxiliary pump 61 is provided on the second fuel supply line 51 between the second fuel storage tank 50 and a second main pump 62 to be described later and is connected to the second fuel storage tank 50 And the stored liquefied natural gas can be supplied to the second main pump 62.

The second auxiliary pump 61 may be provided inside the second fuel storage tank 50 or may be provided at a position lower than the level of the liquefied natural gas stored in the second fuel storage tank 50, Or reciprocating.

The second main pump 62 can pressurize the liquefied natural gas firstly pressurized from the second auxiliary pump 61 to a high pressure and pressurize to about 400 to 600 bar. Specifically, the second main pump 62 may be disposed on the second fuel supply line 51 between the second auxiliary pump 61 and a second heat exchanger 70, which will be described later, To the second heat exchanger (70).

The second heat exchanger (70) heats the pressurized liquefied natural gas from the second pump (60). Specifically, the second heat exchanger 70 is provided between the customer 20 and the second main pump 62 on the second fuel supply line 51, and the second main pump 62 performs the secondary pressurization The liquefied natural gas can be heated to a temperature required by the customer 20.

In the first embodiment of the present invention, a temporary storage tank (not shown) for temporarily storing heated ethane or heated liquefied natural gas between the demander 20 and the first heat exchanger 40 or the second heat exchanger 70 ). ≪ / RTI >

The temporary storage tank may store heated ethane or heated liquefied natural gas at the same time or at the same time and may be of a pressure vessel type so that the pressure of the ethane and the liquefied natural gas can be controlled equally.

As described above, the first fuel processing system 2 and the second fuel processing system 3 are connected at the upstream side of the consumer 20, so that the fuel can be supplied in parallel, Or the liquefied natural gas heated in the second heat exchanger 70 can be supplied to the customer 20 at the same time or at the same time.

In the first embodiment of the present invention, the ethane heated in the first heat exchanger (40) can be supplied to the customer (20) preferentially, but not limited thereto, and can be supplied at the same time as described above.

Therefore, the liquefied gas processing system 100 according to the first embodiment of the present invention is capable of flexibly regulating the fuel supply and, when applied to the ethane carrier 1, by using ethane as the main fuel, .

The consumer 20 is driven through the fuel supplied from the first fuel storage tank 10 or the fuel supplied from the second fuel storage tank 20. That is, the customer 20 needs ethane, liquefied natural gas, or the like, and may include all devices and mechanisms driven by the raw material.

As the piston (not shown) inside the cylinder (not shown) reciprocates due to the combustion of the liquefied gas, the evaporative gas, the oil or the ethane, the consumer 20 has a crankshaft (not shown) connected to the piston And a shaft (not shown) connected to the crankshaft can be rotated. Therefore, as the propeller (not shown) connected to the shaft rotates when the consumer 20 is driven, the hull can move forward or backward.

Of course, in this embodiment, the customer 20 may be an engine for driving the propeller, but it may be an engine for generating power or an engine for generating other power. In other words, the present embodiment does not particularly limit the kind of the consumer 20.

The customer 20 can be a gaseous fuel engine with a high pressure gas injection engine (e.g., MEGI) and is supplied with a liquefied gas in supercritical conditions (30 to 60 degrees Celsius, 200 to 400 bar) or 400 to 600 bar And the state of the liquefied gas or ethane to be supplied may vary depending on the state required by the high-pressure gas injection engine.

In order to use ethane as the driving fuel, the customer 20 should be supplied to the customer 20 in a state of higher pressure than that of the liquefied natural gas. The method of using MEGI engine as fuel for propane is well known and its explanation is omitted.

The customer 20 may be capable of dual fuel. A dual-fuel capable engine is typically a two-stroke engine driven by a diesel cycle. In this diesel cycle, air is compressed by the piston, the compressed high-temperature air is ignited by the pilot fuel, and the remaining high-pressure gas is injected to cause the explosion.

In this case, HFO (Heavy Fuel Oil) or MDO (Marine Diesel Oil) is used as the ignition fuel, and the ratio of the ignition fuel to the high-pressure gas is about 5:95, and the injection amount of the ignition fuel can be adjusted from 5 to 100% Do. Therefore, the ignition fuel is also usable as the driving fuel for the engine.

As described above, the liquefied gas processing system 100 according to the first embodiment of the present invention is provided with the ethane processing system 2 and the liquefied natural gas processing system 3 to simultaneously or simultaneously use ethane or liquefied natural gas There is an effect that the supply of the propelling fuel of the ship 1 is made flexible, and the selection flexibility of the ship owner for the fuel can be secured.

In addition, when applied to the ethane carrier 1, the size of the liquefied natural gas storage tank 50 for storing the liquefied natural gas can be reduced, and the corresponding amount of ethane can be further stored at the opposite side, .

3 is a conceptual view of a ship equipped with a liquefied gas processing system according to a second embodiment of the present invention.

3, the liquefied gas processing system 200 according to the second embodiment of the present invention includes a first fuel processing system 2, a second fuel processing system 3, a hybrid processing system 4, And a consumer 20.

In the second embodiment of the present invention, the components are the same as those in the liquefied gas processing system 100 according to the first embodiment of the present invention.

In addition, in the following, the fuel other than ethane may be a liquefied natural gas, and for the convenience of explanation, the fuel other than ethane is described as liquefied natural gas though not limited thereto.

In the second embodiment of the present invention, in the first fuel processing system 2 and the second fuel processing system 3 in the first embodiment of the present invention, the first main pump 32, the second main pump 62 ), The first heat exchanger 40 and the second heat exchanger 70 are omitted, and the hybrid processing system 4 is introduced, which will be described in detail below.

The hybrid processing system 4 can process the ethane or liquefied natural gas processed in the first fuel processing system 2 and the second fuel processing system 3 into one system and can be operated by the hybrid pump 80 and the hybrid heat exchange Lt; / RTI >

Specifically, the hybrid processing system 4 can be supplied with ethane supplied from the first fuel storage tank 10 or liquefied natural gas supplied from the second fuel storage tank 50, The fuel in a state in which the liquefied natural gas is mixed can be treated and supplied to the customer 20.

In the second embodiment of the present invention, the first fuel supply line 11 connects the first fuel storage tank 10 and the hybrid pump 80, and the second fuel supply line 51 connects the second fuel storage tank 10, The first fuel supply line 11 may be connected between the second fuel storage tank 50 on the second fuel supply line 51 and the hybrid pump 80 .

That is, in the second embodiment of the present invention, ethane supplied from the first fuel storage tank 10 or liquefied natural gas supplied from the second fuel storage tank 50 is joined before being supplied to the hybrid pump 80 .

In the second embodiment of the present invention, the second fuel supply line 51 connects the second fuel storage tank 50 and the consumer 20, and the second auxiliary pump 61, the hybrid pump 80, , And a second heat exchanger (90). The second fuel supply line 51 is provided with a second pressure regulating means 52 between the second heat exchanger 90 and the customer 20 to regulate the pressure of the fuel supplied to the customer 20.

The hybrid pump 80 pressurizes the liquefied natural gas supplied from the ethane supplied from the first fuel storage tank 10 or the second fuel storage tank 50. Specifically, the hybrid pump 80 is provided on the second fuel supply line 51 and primarily pressurizes the pressurized ethane or the primarily pressurized liquefied natural gas to produce ethane or liquefied natural gas Pressure state.

The hybrid heat exchanger (90) heats pressurized ethane or liquefied natural gas in the hybrid pump (80). Specifically, the hybrid heat exchanger 90 is provided on the second fuel supply line 51 and can supply ethane or liquefied natural gas pressurized by the hybrid pump 80 to the customer 20 at high pressure.

In the second embodiment of the present invention, a temporary storage tank (not shown) for temporarily storing the ethane or liquefied natural gas between the hybrid pump 80 and the first fuel storage tank 10 or the second fuel storage tank 50 Not shown).

The temporary storage tank may store the primary pressurized ethane or the primary pressurized liquefied natural gas at the same time or at the same time and may be of the pressure vessel type so that the pressures of the ethane and liquefied natural gas can be controlled equally.

In the second embodiment of the present invention, the ethane stored in the first fuel storage tank 10 may be preferentially supplied to the hybrid pump 80, but not limited thereto, the ethane stored in the first fuel storage tank 10 And the liquefied natural gas stored in the second fuel storage tank 50 may be supplied to the hybrid pump 80 at the same time or at the same time.

Therefore, in the second embodiment of the present invention, the hybrid processing system 4 is provided so that the ethane and the liquefied natural gas are supplied to the hybrid pump 80 in a merged state upstream of the hybrid pump 80, Or the heat exchanger need not be provided in duplicate, thereby reducing the construction cost of the system, and the ethane or the liquefied natural gas can be easily controlled since the ethane or the liquefied natural gas is combined before the pressurization with the high pressure .

As described above, the liquefied gas processing system 200 according to the second embodiment of the present invention is provided with the ethane processing system 2 and the liquefied natural gas processing system 3 to simultaneously or simultaneously use ethane or liquefied natural gas There is an effect that the supply of the propelling fuel of the ship 1 is made flexible, and the selection flexibility of the ship owner for the fuel can be secured.

In addition, when applied to the ethane carrier 1, the size of the liquefied natural gas storage tank 50 for storing the liquefied natural gas can be reduced, and the corresponding amount of ethane can be further stored at the opposite side, .

4 is a conceptual view of a ship equipped with a liquefied gas processing system according to a third embodiment of the present invention.

4, a liquefied gas processing system 300 according to a third embodiment of the present invention includes a first fuel processing system 2, a second fuel processing system 3, a hybrid processing system 4, And a consumer 20.

In the third embodiment of the present invention, the constituent elements are the same as those in the liquefied gas processing system 100 according to the first embodiment of the present invention.

In the third embodiment of the present invention, the first fuel processing system 2, the second fuel processing system 3 and the hybrid processing system 4 are the same as or similar to the configuration in the second embodiment of the present invention Let's replace it.

However, in the second fuel processing system 3, the second auxiliary pump 61 is omitted and the position of the second fuel storage tank 50 is different, which will be described in detail later.

In the third embodiment of the present invention, the second fuel storage tank 50 is provided in the deck upper portion 1b of the ship 1. Specifically, the second fuel storage tank 50 may be a C-type storage tank, may have a detachable form, and may be provided on the deck upper portion 1b of the vessel 1. [

The storage tank of the C-type type can be configured to be stored in a liquid state by controlling the pressure of the storage, and there is no secondary barrier. Typically, C-type storage tanks are stored in a liquefied state by pressurizing the storage at 200 bar to 250 bar.

The second fuel storage tank 50 may include a plurality of storage tanks of the C-type type as described above and may be provided in the deck upper portion 1b of the ship 1, The second auxiliary pump 61 for supplying the liquefied natural gas can be omitted.

Therefore, in the third embodiment of the present invention, it is possible to omit the second auxiliary pump 61, thereby reducing the construction cost of the system, and it is possible to maximize the space utilization of the ship 1 have.

In the third embodiment of the present invention, since the second fuel storage tank 50 provided in the deck lower portion 1c of the ship 1 is provided in the deck upper portion 1b of the ship 1, The surplus space of the deck bottom 1c of the indoor unit 1 can be used to further store ethane, thereby maximizing the space.

As described above, the liquefied gas processing system 300 according to the third embodiment of the present invention is provided with the ethane processing system 2 and the liquefied natural gas processing system 3 to simultaneously or simultaneously use ethane or liquefied natural gas There is an effect that the supply of the propelling fuel of the ship 1 is made flexible, and the selection flexibility of the ship owner for the fuel can be secured.

In addition, when applied to the ethane carrier 1, the size of the liquefied natural gas storage tank 50 for storing the liquefied natural gas can be reduced, and the corresponding amount of ethane can be further stored at the opposite side, .

5 is a conceptual view of a ship equipped with a liquefied gas processing system according to a fourth embodiment of the present invention.

5, the liquefied gas processing system 400 according to the fourth embodiment of the present invention includes a first fuel processing system 2, a second fuel processing system 3, and a demander 20 .

In the fourth embodiment of the present invention, each constitution uses the same reference numerals for the sake of convenience in the constitution in the liquefied gas processing system 100 according to the first embodiment of the present invention, but does not necessarily refer to the same constitution.

In the fourth embodiment of the present invention, the first fuel processing system 2 and the second fuel processing system 3 are the same as or similar to the configuration in the first embodiment of the present invention, so that they are replaced.

However, since the second fuel processing system 3 has the second auxiliary pump 61 omitted and the second fuel storage tank 50 provided in different positions, which has been described in detail in the third embodiment of the present invention, Let's change it.

As such, the liquefied gas processing system 400 in accordance with the fourth embodiment of the present invention, together with the ethane processing system 2 and the liquefied natural gas processing system 3, can use either ethane or liquefied natural gas simultaneously or at the same time There is an effect that the supply of the propelling fuel of the ship 1 is made flexible, and the selection flexibility of the ship owner for the fuel can be secured.

In addition, when applied to the ethane carrier 1, the size of the liquefied natural gas storage tank 50 for storing the liquefied natural gas can be reduced, and the corresponding amount of ethane can be further stored at the opposite side, .

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: Vessel 1a: Deck
1b: upper deck 1c: lower deck
2: first fuel processing system 3: second fuel processing system
4: Hybrid processing system 10: First fuel storage tank
11: first fuel supply line 12: first pressure regulating means
20: customer 30: first pump
31: first auxiliary pump 32: first main pump
40: first heat exchanger 50: second fuel storage tank
51: second fuel supply line 52: second pressure regulating means
60: second pump 61: second auxiliary pump
62: second main pump 70: second heat exchanger
80: Hybrid pump 90: Hybrid heat exchanger
100, 200, 300, 400: liquefied gas processing system of the first, second,

Claims (9)

A first fuel storage tank for storing the ethane;
A second fuel storage tank for storing fuel other than ethane;
A hybrid pump for pressurizing the fuel supplied from the second fuel storage tank or the ethane supplied from the first fuel storage tank;
And a hybrid heat exchanger for heating the pressurized ethane or fuel in the hybrid pump,
Wherein the ethane supplied from the first fuel storage tank or the fuel supplied from the second fuel storage tank is merged before being supplied to the hybrid pump. The method according to claim 1,
A first fuel supply line connecting the first fuel storage tank and the hybrid pump; And
Further comprising a second fuel supply line connecting the second fuel storage tank and a demander,
Wherein the first fuel supply line is connected between the second fuel storage tank on the second fuel supply line and the hybrid pump. The system according to claim 1,
Pressure gas injection engine (ME-GI). The fuel according to claim 1,
Characterized in that the liquefied natural gas (LNG) is liquefied natural gas (LNG). 3. The method of claim 2,
Further comprising a temporary storage tank for temporarily storing the fuel or the fuel between the hybrid pump and the first fuel storage tank or the second fuel storage tank. The method according to claim 1,
Wherein the ethane stored in the first fuel storage tank and the fuel stored in the second fuel storage tank are simultaneously supplied to the hybrid pump. The method according to claim 1,
Wherein the ethane stored in the first fuel storage tank or the fuel stored in the second fuel storage tank is selectively supplied to the hybrid pump at this time. 8. The method of claim 7,
And the ethane stored in the first fuel storage tank is preferentially supplied to the hybrid pump. The method according to claim 1,
A first auxiliary pump for supplying the hybrid pump with the ethane stored in the first fuel storage tank; And
Further comprising a second auxiliary pump for supplying fuel stored in the second fuel storage tank to the hybrid pump.

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