WO2020255255A1 - Fuel purification system and ship - Google Patents

Fuel purification system and ship Download PDF

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Publication number
WO2020255255A1
WO2020255255A1 PCT/JP2019/024099 JP2019024099W WO2020255255A1 WO 2020255255 A1 WO2020255255 A1 WO 2020255255A1 JP 2019024099 W JP2019024099 W JP 2019024099W WO 2020255255 A1 WO2020255255 A1 WO 2020255255A1
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WO
WIPO (PCT)
Prior art keywords
tank
lng
fuel
ship
purification system
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PCT/JP2019/024099
Other languages
French (fr)
Japanese (ja)
Inventor
宏明 大橋
松本　卓也
Original Assignee
日本郵船株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本郵船株式会社 filed Critical 日本郵船株式会社
Priority to JP2019553129A priority Critical patent/JP6714173B1/en
Priority to KR1020217008469A priority patent/KR102400872B1/en
Priority to PCT/JP2019/024099 priority patent/WO2020255255A1/en
Priority to CN201980061112.9A priority patent/CN112739617B/en
Priority to PL437677A priority patent/PL437677A1/en
Publication of WO2020255255A1 publication Critical patent/WO2020255255A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B63B11/04—Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/012—Purifying the fluid by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels

Definitions

  • This disclosure relates to a fuel purification system mounted on a ship and a ship equipped with the fuel purification system.
  • LNG carriers vessels that carry low flammable fuel such as LNG as cargo
  • LNG fuel-fired vessels vessels that use low flammable fuel as propulsion fuel
  • LNG bunker ship A ship for supplying LNG introduced into a tank inside a ship from a terminal to a tank of an LNG ship and an LNG fuel-fired ship (hereinafter referred to as "LNG bunker ship") is known (for example, Patent Document 1).
  • low flash point fuel In LNG ships, LNG fuel-fired ships, and LNG bunker ships, low flash point fuel is stored in tanks mounted on the hull. Low flash point fuels may contain impurities, for example, depending on the geographical conditions of the fuel refinery (desert areas, etc.). When supplying fuel from an LNG carrier to an LNG or LNG fuel-fired ship, or when carrying out fuel from an LNG carrier to a terminal on land, remove impurities from the fuel to improve cleanliness before supplying or carrying out fuel. It is preferable to be able to do it.
  • An object of the present disclosure is to provide a fuel purification system and a ship that can easily improve the cleanliness of low flash point fuel stored in a tank.
  • the fuel purification system is mounted on a single ship and stores the low flash point fuel and the low flash point fuel from one of the plurality of tanks to the other.
  • a moving path to be moved and a filtering unit provided in the moving path and removing impurities contained in the low flash point fuel flowing through the moving path are provided.
  • the fuel purification system is mounted on a ship and circulates a single tank for storing low flash point fuel and the low flash point fuel stored in the tank. It is provided with a circulation path for making the fuel, and a filtering unit provided in the circulation path for removing impurities contained in the low flash point fuel flowing through the circulation path.
  • FIG. 1 is a schematic diagram illustrating a type of ship according to an embodiment.
  • LNG Liquefied Natural Gas
  • LNG will be described as an example of the low flash point fuel stored in the tank 1 according to the embodiment.
  • the ships to which the tank 1 for storing LNG is applied include LNG ships, LNG fuel-fired ships, and LNG bunker ships.
  • An LNG carrier is a ship that carries LNG stored in tank 1 inside the ship as cargo.
  • An LNG fuel-fired ship is a ship that supplies LNG stored in tank 1 inside the ship to the engine and uses it as propulsion fuel.
  • LNG in a liquid state in the tank 1 is sent to an engine by a pump and injected by the engine to be fueled.
  • the BOG Boil Off Gas: methane gas naturally generated by the heat input to the tank
  • vaporized in the tank can be compressed and injected by the engine to be used as fuel.
  • the LNG bunker ship is a ship for supplying LNG stored in the tank 1 inside the ship from the land terminal to the tanks of the LNG ship and the LNG fuel-fired ship.
  • the names of LNG ships, LNG fuel-fired ships, and LNG bunker ships include other names as long as they have similar functions.
  • the LNG ship and the LNG bunker ship may be configured to supply the LNG stored in the tank 1 in the ship to the engine and use it as propulsion fuel.
  • the LNG fuel-fired ship may be configured to use LNG as a propulsion fuel or to carry it as cargo.
  • FIG. 2 is a schematic diagram showing a schematic configuration of the fuel purification system 10 according to the first embodiment.
  • the fuel purification system 10 is mounted on a single ship and holds a plurality of tanks 1A and 1B (two in the example of FIG. 2) for storing LNG, and LNG from tank 1A to tank 1B. It includes a moving path 2 to be moved, and a filter 6 (filtration unit) provided in the moving path 2 and for removing impurities D contained in LNG flowing through the moving path 2. Further, the fuel purification system 10 includes a second movement path 3 for returning LNG from which impurities D have been removed by the filter 6 from the tank 1B to the tank 1A.
  • the tanks 1A and 1B each include an introduction path for introducing LNG from the outside of the hull and a lead-out path for leading out the stored LNG to the outside.
  • the tanks 1A and 1B correspond to the tank 1 shown in FIG.
  • Both ends of the movement path 2 are inserted into the tank 1A and the tank 1B, respectively, and are provided at one end of the pipeline 4 passing through the filter 6 and the tank 1A of the pipeline 4, and are stored in the tank 1A.
  • the second movement path 3 is provided at both ends of the pipe line 7 inserted into the tank 1A and the tank 1B, respectively, and at one end of the pipe line 7 in the tank 1B, and sucks LNG stored in the tank 1B. It has a pump 8 that leads out to the tank 1A via the pipeline 7.
  • LNG can be circulated between the tank 1A and the tank 1B by the movement path 2 and the second movement path 3.
  • the LNG stored in the tanks 1A and 1B may contain impurities D depending on, for example, the geographical conditions (desert area, etc.) of the LNG refining place.
  • Impurity D includes, for example, silicon, iron, or fiber.
  • the LNG stored in the tank 1B and from which the impurity D has been removed is sucked into the second movement path 3 and returned to the tank 1A.
  • the impurities D in the tank 1A can be gradually reduced by using the movement path 2 and the second movement path 3 together.
  • the filter 6 may also be provided in the second movement path 3 for moving the LNG from the tank 1B to the tank 1A.
  • the filter 6 may also be provided in the second movement path 3 for moving the LNG from the tank 1B to the tank 1A.
  • Good for example, when LNG is fully stored in both tank 1A and tank 1B, pumps 5 and 8 are operated at the same time to move LNG from tank 1A to tank 1B and from tank 1B to tank. By simultaneously moving LNG to 1A, both tanks can be purified.
  • This configuration can also be expressed as a configuration in which the movement path 2 provided with the filter 6 includes a pair of ones in the direction from the tank 1A to the tank 1B and ones in the direction from the tank 1B to the tank 1A.
  • FIG. 3 is a schematic view showing a schematic configuration of the fuel purification system 10A according to the second embodiment.
  • the fuel purification system 10A of the second embodiment has a single tank 1, a point having a circulation path 9 for circulating LNG stored in the tank 1, and a circulation path 6 for the filter 6.
  • the point provided in 9 is different from the first embodiment.
  • Both ends of the circulation path 9 are inserted into the tank 1, and the pipe line 11 passing through the filter 6 and one end of the pipe line 11 in the tank 1 are provided to suck LNG stored in the tank 1. It has a pump 12 that passes through a pipeline 11.
  • LNG has been described as an example of the low flammability fuel stored in the tank 1, but it also includes other liquefied gas such as LPG (Liquefied Petroleum Gas: liquefied petroleum gas), liquid hydrogen, ethanol fuel and the like. Other low flammability fuels are also applicable.
  • LPG Liquefied Petroleum Gas: liquefied petroleum gas
  • liquid hydrogen liquid hydrogen
  • ethanol fuel liquid hydrogen
  • Other low flammability fuels are also applicable.
  • the filter is illustrated as an example of the filtration unit that removes the impurity D from LNG, but other elements having a filtration function may be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A fuel purification system that comprises a plurality of tanks that are installed on a single ship and store a low-flash-point fuel, a transfer path for transferring the low-flash-point fuel from one of the plurality of tanks to the other, and a filtration part that is provided on the transfer path and removes impurities included in the low-flash-point fuel that flows through the transfer path.

Description

燃料浄化システム及び船舶Fuel purification system and ships
　本開示は、船舶に搭載される燃料浄化システムと、燃料浄化システムを搭載する船舶に関する。 This disclosure relates to a fuel purification system mounted on a ship and a ship equipped with the fuel purification system.
　従来、ＬＮＧなどの低引火点燃料を貨物として運搬する船舶（以下では「ＬＮＧ船」という）や、低引火点燃料を推進燃料として用いる船舶（以下では「ＬＮＧ燃料焚船」という）、陸上のターミナルから船体内のタンクに導入されたＬＮＧを、ＬＮＧ船及びＬＮＧ燃料焚船のタンクへ供給するための船舶（以下では「ＬＮＧバンカ船」という）が知られている（例えば特許文献１） Conventionally, vessels that carry low flammable fuel such as LNG as cargo (hereinafter referred to as "LNG carriers"), vessels that use low flammable fuel as propulsion fuel (hereinafter referred to as "LNG fuel-fired vessels"), and land-based vessels. A ship for supplying LNG introduced into a tank inside a ship from a terminal to a tank of an LNG ship and an LNG fuel-fired ship (hereinafter referred to as "LNG bunker ship") is known (for example, Patent Document 1).
特開２０１８－１８８０７３号公報JP-A-2018-188073
　ＬＮＧ船、ＬＮＧ燃料焚船、ＬＮＧバンカ船では、低引火点燃料は船体に搭載されるタンクに貯留される。低引火点燃料には、例えば燃料の精製場所の地理的条件（砂漠地帯など）に応じて不純物が含有される場合がある。ＬＮＧバンカ船からＬＮＧ船やＬＮＧ燃料焚船に燃料を供給するときや、ＬＮＧ船から陸上のターミナルへ燃料を搬出するときには、燃料から不純物を除去して清浄度を上げてから燃料の供給や搬出できるのが好ましい。 In LNG ships, LNG fuel-fired ships, and LNG bunker ships, low flash point fuel is stored in tanks mounted on the hull. Low flash point fuels may contain impurities, for example, depending on the geographical conditions of the fuel refinery (desert areas, etc.). When supplying fuel from an LNG carrier to an LNG or LNG fuel-fired ship, or when carrying out fuel from an LNG carrier to a terminal on land, remove impurities from the fuel to improve cleanliness before supplying or carrying out fuel. It is preferable to be able to do it.
　本開示は、タンクに貯留される低引火点燃料の清浄度を簡易に向上できる燃料浄化システム及び船舶を提供することを目的とする。 An object of the present disclosure is to provide a fuel purification system and a ship that can easily improve the cleanliness of low flash point fuel stored in a tank.
　本発明の実施形態の一観点に係る燃料浄化システムは、単一の船舶に搭載され、低引火点燃料を貯留する複数のタンクと、前記複数のタンクの一方から他方へ前記低引火点燃料を移動させる移動経路と、前記移動経路に設けられ、前記移動経路を流れる前記低引火点燃料に含まれる不純物を除去する濾過部と、を備える。 The fuel purification system according to one aspect of the embodiment of the present invention is mounted on a single ship and stores the low flash point fuel and the low flash point fuel from one of the plurality of tanks to the other. A moving path to be moved and a filtering unit provided in the moving path and removing impurities contained in the low flash point fuel flowing through the moving path are provided.
　同様に、本発明の実施形態の一観点に係る燃料浄化システムは、船舶に搭載され、低引火点燃料を貯留する単一のタンクと、前記タンクに貯留されている前記低引火点燃料を循環させる循環経路と、前記循環経路に設けられ、前記循環経路を流れる前記低引火点燃料に含まれる不純物を除去する濾過部と、を備える。 Similarly, the fuel purification system according to one aspect of the embodiment of the present invention is mounted on a ship and circulates a single tank for storing low flash point fuel and the low flash point fuel stored in the tank. It is provided with a circulation path for making the fuel, and a filtering unit provided in the circulation path for removing impurities contained in the low flash point fuel flowing through the circulation path.
　本開示によれば、タンクに貯留される低引火点燃料の清浄度を簡易に向上できる燃料浄化システム及び船舶を提供することができる。 According to the present disclosure, it is possible to provide a fuel purification system and a ship that can easily improve the cleanliness of low flash point fuel stored in a tank.
実施形態に係る船舶の種類を説明する模式図である。It is a schematic diagram explaining the type of a ship which concerns on embodiment. 第１実施形態に係る燃料浄化システムの概略構成を示す模式図である。It is a schematic diagram which shows the schematic structure of the fuel purification system which concerns on 1st Embodiment. 第２実施形態に係る燃料浄化システムの概略構成を示す模式図である。It is a schematic diagram which shows the schematic structure of the fuel purification system which concerns on 2nd Embodiment.
　以下、添付図面を参照しながら実施形態について説明する。説明の理解を容易にするため、各図面において同一の構成要素に対しては可能な限り同一の符号を付して、重複する説明は省略する。 Hereinafter, embodiments will be described with reference to the attached drawings. In order to facilitate understanding of the description, the same components are designated by the same reference numerals as much as possible in each drawing, and duplicate description is omitted.
　［第１実施形態］
　図１、図２を参照して第１実施形態を説明する。まず図１を参照して、実施形態に係る燃料浄化システムのタンク１が適用される船舶の種類について説明する。図１は、実施形態に係る船舶の種類を説明する模式図である。なお、実施形態に係るタンク１が貯留する低引火点燃料の一例として、ＬＮＧ（Ｌｉｑｕｅｆｉｅｄ　Ｎａｔｕｒａｌ　Ｇａｓ：液化天然ガス）を挙げて説明する。 [First Embodiment]
The first embodiment will be described with reference to FIGS. 1 and 2. First, with reference to FIG. 1, the type of ship to which the tank 1 of the fuel purification system according to the embodiment is applied will be described. FIG. 1 is a schematic diagram illustrating a type of ship according to an embodiment. LNG (Liquefied Natural Gas) will be described as an example of the low flash point fuel stored in the tank 1 according to the embodiment.
　図１に示すように、ＬＮＧを貯留するタンク１が適用される船舶は、ＬＮＧ船と、ＬＮＧ燃料焚船と、ＬＮＧバンカ船とを含む。 As shown in FIG. 1, the ships to which the tank 1 for storing LNG is applied include LNG ships, LNG fuel-fired ships, and LNG bunker ships.
　ＬＮＧ船とは、船体内のタンク１に貯留したＬＮＧを貨物として運搬する船舶である。 An LNG carrier is a ship that carries LNG stored in tank 1 inside the ship as cargo.
　ＬＮＧ燃料焚船とは、船体内のタンク１に貯留したＬＮＧをエンジンに供給して推進燃料として用いる船舶である。例えば、ＬＮＧ燃料焚船では、タンク１内で液体状態であるＬＮＧをポンプでエンジンへ送出して、エンジンで噴射させて燃料させる。または、タンク内で気化されたＢＯＧ（Ｂｏｉｌ　Ｏｆｆ　Ｇａｓ：タンクへの入熱で自然に発生するメタンガス）を圧縮して、エンジンで噴射させて燃料させることもできる。 An LNG fuel-fired ship is a ship that supplies LNG stored in tank 1 inside the ship to the engine and uses it as propulsion fuel. For example, in an LNG fuel-fired ship, LNG in a liquid state in the tank 1 is sent to an engine by a pump and injected by the engine to be fueled. Alternatively, the BOG (Boil Off Gas: methane gas naturally generated by the heat input to the tank) vaporized in the tank can be compressed and injected by the engine to be used as fuel.
　ＬＮＧバンカ船とは、陸上のターミナルから船体内のタンク１に貯留されたＬＮＧを、ＬＮＧ船及びＬＮＧ燃料焚船のタンクへ供給するための船舶である。 The LNG bunker ship is a ship for supplying LNG stored in the tank 1 inside the ship from the land terminal to the tanks of the LNG ship and the LNG fuel-fired ship.
　なお、ＬＮＧ船、ＬＮＧ燃料焚船、ＬＮＧバンカ船の各呼称は、同様の機能を有する船舶であれば他の呼称のものも含む。また、ＬＮＧ船及びＬＮＧバンカ船が、船体内のタンク１に貯留したＬＮＧをエンジンに供給して推進燃料として用いる構成でもよい。また、ＬＮＧ燃料焚船が、ＬＮＧを推進燃料として用いる他に貨物として運搬する構成でもよい。 The names of LNG ships, LNG fuel-fired ships, and LNG bunker ships include other names as long as they have similar functions. Further, the LNG ship and the LNG bunker ship may be configured to supply the LNG stored in the tank 1 in the ship to the engine and use it as propulsion fuel. Further, the LNG fuel-fired ship may be configured to use LNG as a propulsion fuel or to carry it as cargo.
　図２は、第１実施形態に係る燃料浄化システム１０の概略構成を示す模式図である。 FIG. 2 is a schematic diagram showing a schematic configuration of the fuel purification system 10 according to the first embodiment.
　図２に示すように、燃料浄化システム１０は、単一の船舶に搭載され、ＬＮＧを貯留する複数（図２の例では２つ）のタンク１Ａ、１Ｂと、タンク１Ａからタンク１ＢへＬＮＧを移動させる移動経路２と、移動経路２に設けられ、移動経路２を流れるＬＮＧに含まれる不純物Ｄを除去するフィルタ６（濾過部）と、を備える。また、燃料浄化システム１０は、フィルタ６により不純物Ｄを除去されたＬＮＧをタンク１Ｂからタンク１Ａへ戻す第２移動経路３を備える。 As shown in FIG. 2, the fuel purification system 10 is mounted on a single ship and holds a plurality of tanks 1A and 1B (two in the example of FIG. 2) for storing LNG, and LNG from tank 1A to tank 1B. It includes a moving path 2 to be moved, and a filter 6 (filtration unit) provided in the moving path 2 and for removing impurities D contained in LNG flowing through the moving path 2. Further, the fuel purification system 10 includes a second movement path 3 for returning LNG from which impurities D have been removed by the filter 6 from the tank 1B to the tank 1A.
　タンク１Ａ、１Ｂは、図２には図示しないが、それぞれ船体の外部からＬＮＧを導入する導入路と、貯留されているＬＮＧを外部へ導出する導出路とを備える。なお、タンク１Ａ、１Ｂは、図１に示したタンク１に相当する。 Although not shown in FIG. 2, the tanks 1A and 1B each include an introduction path for introducing LNG from the outside of the hull and a lead-out path for leading out the stored LNG to the outside. The tanks 1A and 1B correspond to the tank 1 shown in FIG.
　移動経路２は、その両端がタンク１Ａとタンク１Ｂにそれぞれ挿入され、フィルタ６を通過する管路４と、管路４のタンク１Ａ内の一端部に設けられ、タンク１Ａに貯留されているＬＮＧを吸引して管路４を介してタンク１Ｂに導出するポンプ５を有する。 Both ends of the movement path 2 are inserted into the tank 1A and the tank 1B, respectively, and are provided at one end of the pipeline 4 passing through the filter 6 and the tank 1A of the pipeline 4, and are stored in the tank 1A. Has a pump 5 that sucks the water and leads it to the tank 1B via the pipe line 4.
　第２移動経路３は、その両端がタンク１Ａとタンク１Ｂにそれぞれ挿入される管路７と、管路７のタンク１Ｂ内の一端部に設けられ、タンク１Ｂに貯留されているＬＮＧを吸引して管路７を介してタンク１Ａに導出するポンプ８を有する。 The second movement path 3 is provided at both ends of the pipe line 7 inserted into the tank 1A and the tank 1B, respectively, and at one end of the pipe line 7 in the tank 1B, and sucks LNG stored in the tank 1B. It has a pump 8 that leads out to the tank 1A via the pipeline 7.
　つまり、燃料浄化システム１０では、移動経路２と第２移動経路３とによって、タンク１Ａとタンク１Ｂとの間でＬＮＧを循環可能に構成されている。 That is, in the fuel purification system 10, LNG can be circulated between the tank 1A and the tank 1B by the movement path 2 and the second movement path 3.
　ところで、タンク１Ａ、１Ｂに貯留されるＬＮＧには、例えばＬＮＧの精製場所の地理的条件（砂漠地帯など）に応じて不純物Ｄが含有される場合がある。不純物Ｄとしては、例えば、珪素、鉄、または繊維分を含む。不純物Ｄは、ＬＮＧがタンク１Ａ、１Ｂに導入された後に、ＬＮＧとの比重によって図２に示すようにタンク底面２ａに沈殿される。 By the way, the LNG stored in the tanks 1A and 1B may contain impurities D depending on, for example, the geographical conditions (desert area, etc.) of the LNG refining place. Impurity D includes, for example, silicon, iron, or fiber. After LNG is introduced into tanks 1A and 1B, the impurity D is precipitated on the bottom surface 2a of the tank as shown in FIG. 2 due to its specific gravity with LNG.
　燃料浄化システム１０では、不純物Ｄが混じったＬＮＧがタンク１Ａに供給されると、ＬＮＧに対して比重の大きい不純物Ｄはタンク１Ａ内に沈殿するが、ポンプ５が作動すると、ＬＮＧと共に不純物Ｄも移動経路２に吸引される。移動経路２に吸引されたＬＮＧはフィルタ６を通過するときに不純物Ｄが除去されて、タンク１Ｂに導入される。これにより、移動経路２を通過させるだけで、タンク１Ｂに貯留されるＬＮＧの清浄度を簡易に向上できる。 In the fuel purification system 10, when LNG mixed with impurities D is supplied to tank 1A, impurities D having a large specific gravity with respect to LNG settle in tank 1A, but when the pump 5 operates, impurities D are also contained together with LNG. It is sucked into the movement path 2. Impurities D are removed from the LNG sucked into the moving path 2 when it passes through the filter 6, and the LNG is introduced into the tank 1B. As a result, the cleanliness of the LNG stored in the tank 1B can be easily improved simply by passing through the movement path 2.
　さらに、燃料浄化システム１０では、ポンプ８が作動すると、タンク１Ｂに貯留され、不純物Ｄを除去されたＬＮＧは、第２移動経路３に吸引され、タンク１Ａに戻される。これにより、移動経路２と第２移動経路３とを併用することによって、タンク１Ａ内の不純物Ｄを徐々に低減できる。また、タンク１Ａとタンク１ＢのＬＮＧ貯流量を一定に保ちつつ両方のタンクのＬＮＧの浄化を行うことができる。これにより、移動経路２と第２移動経路３とを通過させるだけで、タンク１Ａとタンク１Ｂに貯留されるＬＮＧの清浄度を簡易に向上できる。 Further, in the fuel purification system 10, when the pump 8 is operated, the LNG stored in the tank 1B and from which the impurity D has been removed is sucked into the second movement path 3 and returned to the tank 1A. As a result, the impurities D in the tank 1A can be gradually reduced by using the movement path 2 and the second movement path 3 together. Further, it is possible to purify the LNG of both tanks while keeping the LNG storage flow rate of the tank 1A and the tank 1B constant. As a result, the cleanliness of the LNG stored in the tank 1A and the tank 1B can be easily improved only by passing the moving path 2 and the second moving path 3.
　なお、タンク１Ａからタンク１ＢへＬＮＧを移動する移動経路２にフィルタ６を設ける構成を例示したが、タンク１Ｂからタンク１ＡへＬＮＧを移動する第２移動経路３にもフィルタ６を設ける構成としてもよい。この場合、例えばタンク１Ａとタンク１Ｂの両方にＬＮＧが満杯まで貯留されている場合に、ポンプ５とポンプ８を同時に作動させて、タンク１Ａからタンク１ＢへのＬＮＧの移動と、タンク１Ｂからタンク１ＡへのＬＮＧの移動とを同時に行うことで、両方のタンクの浄化を行うことができる。この構成は、フィルタ６を備える移動経路２を、タンク１Ａからタンク１Ｂへの方向のものと、タンク１Ｂからタンク１Ａへの方向のものの一対を備える構成とも表現できる。 Although the configuration in which the filter 6 is provided in the movement path 2 for moving the LNG from the tank 1A to the tank 1B is illustrated, the filter 6 may also be provided in the second movement path 3 for moving the LNG from the tank 1B to the tank 1A. Good. In this case, for example, when LNG is fully stored in both tank 1A and tank 1B, pumps 5 and 8 are operated at the same time to move LNG from tank 1A to tank 1B and from tank 1B to tank. By simultaneously moving LNG to 1A, both tanks can be purified. This configuration can also be expressed as a configuration in which the movement path 2 provided with the filter 6 includes a pair of ones in the direction from the tank 1A to the tank 1B and ones in the direction from the tank 1B to the tank 1A.
　［第２実施形態］
　図３を参照して第２実施形態を説明する。図３は、第２実施形態に係る燃料浄化システム１０Ａの概略構成を示す模式図である。 [Second Embodiment]
The second embodiment will be described with reference to FIG. FIG. 3 is a schematic view showing a schematic configuration of the fuel purification system 10A according to the second embodiment.
　図３に示すように、第２実施形態の燃料浄化システム１０Ａは、タンク１が単一である点、タンク１に貯留されているＬＮＧを循環させる循環経路９を備える点、フィルタ６が循環経路９に設けられる点が、第１実施形態と異なる。 As shown in FIG. 3, the fuel purification system 10A of the second embodiment has a single tank 1, a point having a circulation path 9 for circulating LNG stored in the tank 1, and a circulation path 6 for the filter 6. The point provided in 9 is different from the first embodiment.
　循環経路９は、その両端がタンク１に挿入され、フィルタ６を通過する管路１１と、管路１１のタンク１内の一端部に設けられ、タンク１に貯留されているＬＮＧを吸引して管路１１に通すポンプ１２を有する。 Both ends of the circulation path 9 are inserted into the tank 1, and the pipe line 11 passing through the filter 6 and one end of the pipe line 11 in the tank 1 are provided to suck LNG stored in the tank 1. It has a pump 12 that passes through a pipeline 11.
　燃料浄化システム１０Ａでは、不純物Ｄが混じったＬＮＧがタンク１に供給されると、ＬＮＧに対して比重の大きい不純物Ｄはタンク１内に沈殿するが、ポンプ１２が作動すると、ＬＮＧと共に不純物Ｄも循環経路９に吸引される。循環経路９に吸引されたＬＮＧはフィルタ６を通過するときに不純物Ｄが除去されて、再びタンク１に導入される。これにより、循環経路９を通過させるだけで、単一のタンク１に貯留されるＬＮＧの清浄度を簡易に向上できる。 In the fuel purification system 10A, when LNG mixed with impurities D is supplied to tank 1, impurities D having a large specific gravity with respect to LNG settle in tank 1, but when the pump 12 operates, impurities D are also present together with LNG. It is sucked into the circulation path 9. Impurities D are removed from the LNG sucked into the circulation path 9 when it passes through the filter 6, and the LNG is introduced into the tank 1 again. As a result, the cleanliness of LNG stored in a single tank 1 can be easily improved simply by passing through the circulation path 9.
　以上、具体例を参照しつつ本実施形態について説明した。しかし、本開示はこれらの具体例に限定されるものではない。これら具体例に、当業者が適宜設計変更を加えたものも、本開示の特徴を備えている限り、本開示の範囲に包含される。前述した各具体例が備える各要素およびその配置、条件、形状などは、例示したものに限定されるわけではなく適宜変更することができる。前述した各具体例が備える各要素は、技術的な矛盾が生じない限り、適宜組み合わせを変えることができる。 The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Those skilled in the art with appropriate design changes to these specific examples are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the above-mentioned specific examples, its arrangement, conditions, shape, etc. is not limited to the illustrated one, and can be appropriately changed. The combinations of the elements included in each of the above-mentioned specific examples can be appropriately changed as long as there is no technical contradiction.
　上記実施形態では、タンク１が貯留する低引火点燃料の一例としてＬＮＧを挙げて説明したが、ＬＰＧ（Ｌｉｑｕｅｆｉｅｄ　Ｐｅｔｒｏｌｅｕｍ　Ｇａｓ：液化石油ガス）などの他の液化ガス、液体水素、エタノール燃料などを含む他の低引火点燃料も適用可能である。 In the above embodiment, LNG has been described as an example of the low flammability fuel stored in the tank 1, but it also includes other liquefied gas such as LPG (Liquefied Petroleum Gas: liquefied petroleum gas), liquid hydrogen, ethanol fuel and the like. Other low flammability fuels are also applicable.
　上記実施形態では、ＬＮＧから不純物Ｄを除去する濾過部の一例としてフィルタを例示したが濾過機能を有する他の要素を用いてもよい。 In the above embodiment, the filter is illustrated as an example of the filtration unit that removes the impurity D from LNG, but other elements having a filtration function may be used.
　１０、１０Ａ　　燃料浄化システム
　１、１Ａ、１Ｂ　　タンク
　２　　移動経路
　３　　第２移動経路
　６　　フィルタ（濾過部）
　９　　循環経路 10, 10A Fuel purification system 1, 1A, 1B Tank 2 Movement path 3 Second movement path 6 Filter (filtration section)
9 Circulatory pathway

Claims (4)

  1. 　単一の船舶に搭載され、低引火点燃料を貯留する複数のタンクと、
    　前記複数のタンクの一方から他方へ前記低引火点燃料を移動させる移動経路と、
    　前記移動経路に設けられ、前記移動経路を流れる前記低引火点燃料に含まれる不純物を除去する濾過部と、
    を備える燃料浄化システム。     Multiple tanks mounted on a single vessel to store low flash point fuel,
    A movement path for moving the low flash point fuel from one of the plurality of tanks to the other,
    A filtration unit provided in the movement path to remove impurities contained in the low flash point fuel flowing through the movement path,
    A fuel purification system equipped with.
  2. 　前記濾過部により前記不純物を除去された前記低引火点燃料を前記複数のタンクの他方から一方へ戻す第２移動経路を備える、
    請求項１に記載の燃料浄化システム。     A second moving path for returning the low flash point fuel from which the impurities have been removed by the filtration unit from the other of the plurality of tanks to one of the tanks is provided.
    The fuel purification system according to claim 1.
  3. 　船舶に搭載され、低引火点燃料を貯留する単一のタンクと、
    　前記タンクに貯留されている前記低引火点燃料を循環させる循環経路と、
    　前記循環経路に設けられ、前記循環経路を流れる前記低引火点燃料に含まれる不純物を除去する濾過部と、
    を備える燃料浄化システム。     A single tank mounted on a ship to store low flash point fuel,
    A circulation path for circulating the low flash point fuel stored in the tank, and
    A filtration unit provided in the circulation path to remove impurities contained in the low flash point fuel flowing through the circulation path,
    A fuel purification system equipped with.
  4. 　請求項１～３のいずれか１項に記載の燃料浄化システムを搭載する船舶。 A ship equipped with the fuel purification system according to any one of claims 1 to 3.
PCT/JP2019/024099 2019-06-18 2019-06-18 Fuel purification system and ship WO2020255255A1 (en)

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