WO2022210178A1 - Navire - Google Patents

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Publication number
WO2022210178A1
WO2022210178A1 PCT/JP2022/013584 JP2022013584W WO2022210178A1 WO 2022210178 A1 WO2022210178 A1 WO 2022210178A1 JP 2022013584 W JP2022013584 W JP 2022013584W WO 2022210178 A1 WO2022210178 A1 WO 2022210178A1
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WO
WIPO (PCT)
Prior art keywords
line
gas
liquefied gas
boil
downstream
Prior art date
Application number
PCT/JP2022/013584
Other languages
English (en)
Japanese (ja)
Inventor
晋介 森本
一志 桑畑
Original Assignee
三菱造船株式会社
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.)
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Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=78509545&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2022210178(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 三菱造船株式会社 filed Critical 三菱造船株式会社
Priority to CN202280022659.XA priority Critical patent/CN117098705A/zh
Priority to KR1020237031457A priority patent/KR20230146073A/ko
Publication of WO2022210178A1 publication Critical patent/WO2022210178A1/fr

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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 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/12—Heating; Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J3/00—Driving of auxiliaries
    • B63J3/02—Driving of auxiliaries from propulsion power plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • 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
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • 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
    • F17C2265/02—Mixing fluids
    • F17C2265/022—Mixing fluids identical fluid
    • 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
    • F17C2265/03—Treating the boil-off
    • F17C2265/031—Treating the boil-off by discharge
    • 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
    • F17C2265/06—Fluid distribution
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels
    • 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

  • Patent Literature 1 discloses an evaporative gas treatment system for a ship or offshore structure that includes a high pressure compression line and a low pressure compression line.
  • the high-pressure compression line compresses the boil-off gas (evaporation gas) generated in the LNG storage tank with a high-pressure compressor.
  • a low pressure compression line compresses the boil-off gas generated in the LNG storage tank with a low pressure compressor. Furthermore, the boil-off gas compressed in the high-pressure compression line and the low-pressure condensate line is supplied to gas consumers including gas engines, GCUs (GAS Combustion Units) and boilers of ships or offshore structures.
  • gas consumers including gas engines, GCUs (GAS Combustion Units) and boilers of ships or offshore structures.
  • Patent Document 1 when boil-off gas is supplied to a gas engine used as a main engine of a ship, the amount of boil-off gas consumed by the main engine varies depending on the rotation speed of the main engine, that is, the sailing speed of the ship. Further, when the boil-off gas is supplied to the generator of the ship, the amount of boil-off gas consumed by the auxiliary equipment is small compared to the amount of boil-off gas consumed by the main equipment. Therefore, the amount of boil-off gas generated in the LNG storage tank and the amount of boil-off gas consumed by the main and auxiliary machines may not be balanced. Moreover, when the boil-off gas is burned in the GCU, the combustion energy of the boil-off gas is not effectively used and is thrown away. Furthermore, there is also a method of re-liquefying the boil-off gas, but in this case, a re-liquefying device is required, leading to an increase in facility costs.
  • the present disclosure has been made to solve the above problems, and aims to provide a ship capable of more efficiently treating boil-off gas.
  • the ship according to the present disclosure includes a hull, a liquefied gas tank, a first line, an upstream pump, a downstream pump, a second line, a compressor, a mixing line, Prepare.
  • the liquefied gas tank is provided on the hull.
  • the liquefied gas tank stores liquefied gas.
  • the first line introduces the liquefied gas in the liquefied gas tank into the main machine.
  • the upstream pump is provided on the first line.
  • the upstream pump pumps the liquefied gas.
  • the downstream pump is provided downstream of the upstream pump in the first line.
  • the downstream pump pumps the liquefied gas at a higher pressure than the upstream pump.
  • the second line introduces boil-off gas generated by evaporation of the liquefied gas in the liquefied gas tank to the auxiliary machine.
  • the compressor is provided on the second line.
  • the compressor pumps the boil-off gas at a pressure higher than the discharge side of the upstream pump and lower than the discharge side of the downstream pump.
  • the mixing line connects an intermediate portion of the first line between the upstream pump and the downstream pump and a portion of the second line downstream of the compressor.
  • the mixing line is capable of mixing the boil-off gas of the second line with the liquefied gas of the first line.
  • boil-off gas can be treated more efficiently.
  • FIG. 1 is a side view of a vessel according to an embodiment of the present disclosure
  • FIG. 1 is a diagram showing the configuration of a fuel supply system provided on a ship according to a first embodiment of the present disclosure
  • FIG. Fig. 2 is a diagram showing the configuration of a fuel supply system provided on a ship according to a second embodiment of the present disclosure
  • ⁇ First Embodiment> (Overall configuration of ship) 1 is a side view of a vessel according to an embodiment of the present disclosure; FIG.
  • a ship 1 of this embodiment mainly includes a hull 2, a liquefied gas tank 10, a main engine 21, an auxiliary engine 22, and a fuel supply system 30A.
  • the ship type of the ship 1 is not limited to a specific one.
  • the ship type of the ship 1 is, for example, a carrier of liquefied gas such as liquefied natural gas (LNG), carbon dioxide, or ammonia, a ferry, a RORO ship (Roll-on/Roll-off ship), or a PCTC (Pure Car & Truck Carrier). etc. can be exemplified.
  • LNG liquefied natural gas
  • CORO ship Roll-on/Roll-off ship
  • PCTC PCTC
  • the hull 2 has a pair of sides 3A and 3B and a hull 4 that form its outer shell.
  • the shipboard sides 3A, 3B are provided with a pair of shipboard skins forming the starboard and port sides, respectively.
  • the ship's bottom 4 includes a ship's bottom shell plate that connects the sides 3A and 3B.
  • the pair of sides 3A and 3B and the bottom 4 form a U-shaped outer shell of the hull 2 in a cross section perpendicular to the fore-and-aft direction FA.
  • the hull 2 further includes an upper deck 5, which is a through deck arranged on the uppermost layer.
  • a superstructure 7 is formed on the upper deck 5 .
  • a living quarter and the like are provided in the upper structure 7 .
  • a cargo space (not shown) for loading cargo is provided on the bow side of the bow-stern direction FA from the upper structure 7 .
  • a main engine 21 and an auxiliary engine 22 are provided inside the hull 2 .
  • the main machine 21 and the auxiliary machine 22 use liquefied gas as fuel.
  • This embodiment exemplifies a case where the main machine 21 and the auxiliary machine 22 use LNG as fuel.
  • the main engine 21 exerts a propulsive force for sailing the ship 1 .
  • the main engine 21 rotates the screw 9 provided outside the stern 2b of the hull 2, for example.
  • Examples of the main machine 21 include a steam turbine boiler, a gas turbine, a reciprocating engine, and the like.
  • the auxiliary machine 22 generates power used within the ship 1 .
  • the ship 1 of this embodiment includes, as the auxiliary machine 22, a generator engine for driving a generator (not shown).
  • Examples of the auxiliary machine 22 include a gas turbine and a reciprocating engine. Rotational energy generated by the auxiliary machine 22 is converted into electrical energy by the generator and supplied to various parts inside the hull 2 .
  • the liquefied gas tank 10 stores LNG as fuel for the main machine 21 and the auxiliary machine 22 .
  • the liquefied gas tank 10 in this embodiment is arranged on the upper deck 5 . Note that the arrangement of the liquefied gas tank 10 is not limited to the upper deck 5 .
  • the liquefied gas tank 10 may be arranged within the hull 2, for example.
  • the fuel supply system 30A supplies LNG as fuel to the main machine 21 and the auxiliary machine 22 .
  • the fuel supply system 30A includes a first line 31, a second line 32, a mixing line 33A, and a waste line .
  • the first line 31 connects the liquefied gas tank 10 and the main engine 21 .
  • the first line 31 forms a flow path that guides the liquefied gas LG stored in the liquefied gas tank 10 to the main engine 21 .
  • the first line 31 is provided with an upstream pump 41, a downstream pump 42, and an evaporator 46, respectively.
  • the upstream pump 41 pumps the liquefied gas LG stored in the liquefied gas tank 10 toward the main engine 21 .
  • the upstream pump 41 is provided in the first line 31 inside the liquefied gas tank 10 .
  • the upstream pump 41 of the present embodiment is arranged in the lower part of the liquefied gas tank 10, and is provided at the upstream end of the first line 31 in the direction in which the liquefied gas LG flows in the first line 31. .
  • the downstream pump 42 is arranged downstream of the upstream pump 41 in the flow direction of the liquefied gas LG in the first line 31 .
  • the downstream pump 42 pumps the liquefied gas LG toward the main engine 21 at a pressure higher than that of the upstream pump 41 .
  • the evaporator 46 is arranged downstream of the downstream pump 42 in the first line 31 in the flow direction of the liquefied gas LG in the first line 31 .
  • the evaporator 46 evaporates the liquefied gas LG pressure-fed by the downstream pump 42 .
  • the liquefied gas LG vaporized by this evaporator 46 is sent to the main engine 21 .
  • the first line 31 further comprises an offset vent 48.
  • the offset vent 48 is provided upstream of the downstream pump 42 in the flow direction of the liquefied gas LG in the first line 31 .
  • the offset vent 48 is elastically deformable in the fore-and-aft direction FA according to at least thermal contraction due to the internal fluid and expansion and contraction deformation of the hull 2 in the fore-and-aft direction FA. That is, the offset vent 48 absorbs thermal contraction due to the internal fluid and expansion/contraction deformation of the hull 2 in the fore-and-aft direction FA by elastically deforming in this way.
  • the offset vent 48 has at least one bend 48k.
  • the offset vent 48 of this embodiment has a plurality of bent portions 48k, and the plurality of bent portions 48k form a rectangular wave shape. By providing the plurality of bent portions 48k, the liquefied gas LG flowing inside the offset vent 48 meanders.
  • the offset vent 48 in this embodiment is provided with the bent portion 48k, so that it can be easily elastically deformed in the fore-and-aft direction FA according to the expansion and contraction deformation of the hull 2 in the fore-and-aft direction FA.
  • the offset vent 48 is provided on the downstream side of the first line 31 in the flow direction of the liquefied gas LG from the junction 31j of the mixing line 33A and the first line 31 .
  • the second line 32 connects the gas phase inside the liquefied gas tank 10 and the auxiliary machine 22 .
  • natural heat input from the outside evaporates the liquefied gas LG in a liquid state to generate a boil-off gas BOG.
  • the second line 32 introduces the boil-off gas BOG generated within the liquefied gas tank 10 to the auxiliary machine 22 .
  • the second line 32 is provided with a compressor 44 and a first heat exchanger 45, respectively.
  • the compressor 44 compresses and sends out the boil-off gas BOG generated in the liquefied gas tank 10 .
  • the pressure of the boil-off gas BOG compressed by the compressor 44 is higher than the pressure on the discharge side of the upstream pump 41 provided in the first line 31 and lower than the pressure on the discharge side of the downstream pump 42 .
  • the first heat exchanger 45 is provided in the second line 32 downstream of the compressor 44 in the flow direction of the boil-off gas BOG in the second line 32 .
  • the first heat exchanger 45 heat-exchanges water, such as seawater introduced from the outside of the hull 2 as a refrigerant, and the boil-off gas BOG compressed by the compressor 44 .
  • the mixing line 33A includes a confluence portion 31j at an intermediate portion between the upstream pump 41 and the downstream pump 42 in the first line 31, and a downstream side of the compressor 44 and the first heat exchanger 45 in the second line 32. 32s.
  • the mixing line 33A joins part of the boil-off gas BOG that has passed through the compressor 44 and the first heat exchanger 45 in the second line 32 to the liquefied gas LG in the first line 31 from the junction 31j.
  • Part of the boil-off gas BOG is mixed with the liquefied gas LG of the first line 31 by allowing a part of the boil-off gas BOG to join the liquefied gas LG of the first line 31 in this manner.
  • the waste line 34 branches from a portion 32 s downstream of the compressor 44 and the first heat exchanger 45 in the second line 32 to reach the waste line 34 .
  • the waste line 34 forms a flow path for sending part of the boil-off gas BOG that has passed through the compressor 44 and the first heat exchanger 45 in the second line 32 to the GCU 23 .
  • the boil-off gas BOG fed into the GCU 23 is disposed of by being burned by the GCU 23.
  • the liquefied gas LG stored in the liquefied gas tank 10 is introduced into the main engine 21 through the first line 31.
  • the liquefied gas LG is LNG
  • the liquefied gas LG at about -163°C is stored in the liquefied gas tank 10, for example.
  • the liquefied gas LG is pressurized by the upstream pump 41 to a pressure of 0.5 MPaG and about -150°C, for example.
  • the pressurized liquefied gas LG is further pressurized by the downstream pump 42 to a higher pressure, for example, about 30 MPaG and -120.degree.
  • the liquefied gas LG pressurized by the downstream pump 42 is vaporized by the evaporator 46 and introduced into the main engine 21 .
  • the liquefied gas LG introduced into the main engine 21 is consumed by being burned in the main engine 21 .
  • the boil-off gas BOG generated by evaporation of the liquefied gas LG in the liquefied gas tank 10 has a pressure of, for example, about 0.05 MPaG.
  • the boil-off gas BOG is introduced from the gas phase of the liquefied gas tank 10 through the second line 32 into the compressor 44 . Then, the boil-off gas BOG is compressed by the compressor 44 to, for example, 0.6 MPaG and about 100°C.
  • the boil-off gas BOG that has passed through the compressor 44 is heat-exchanged with water such as seawater in the first heat exchanger 45, so that the temperature is about normal temperature, for example, about 0.6 MPaG and about 30°C.
  • the boil-off gas BOG that has passed through the first heat exchanger 45 is introduced into the auxiliary machine 22 .
  • the boil-off gas BOG introduced into the auxiliary machine 22 is consumed by being burned in the auxiliary machine 22 .
  • the boil-off gas BOG exceeding the consumption of the boil-off gas BOG in the auxiliary machine 22 passes through the mixing line 33A, and flows from the confluence portion 31j of the intermediate portion between the upstream pump 41 and the downstream pump 42 in the first line 31 to the first line. 31 and mixed with the liquefied gas LG.
  • the boil-off gas BOG flowing from the second line 32 to the mixing line 33A is compressed by the compressor 44, and is higher than the discharge side of the upstream pump 41 and lower than the discharge side of the downstream pump 42. pressure (for example, 0.6 MPaG).
  • the liquefied gas LG in the first line 31 has a pressure on the discharge side of the upstream pump 41 (for example, 0.5 MPaG ). That is, the pressure of the boil-off gas BOG flowing from the mixing line 33A is higher than the pressure of the liquefied gas LG in the first line 31 . Therefore, the boil-off gas BOG in the mixing line 33A smoothly joins the liquefied gas LG in the first line 31 due to these pressure differences.
  • the liquefied gas LG is pressurized by the upstream pump 41 to raise its temperature to, for example, about ⁇ 150° C., which is lower than the saturation temperature (for example, about ⁇ 134° C.) after pressurization (for example, 0.5 MPaG). Due to the temperature, the boil-off gas BOG flowing from the mixing line 33A cools and condenses. The boil-off gas BOG mixed with the liquefied gas LG in this manner is sent to the main engine 21 and burned together with the liquefied gas LG.
  • the surplus boil-off gas BOG is sent to the GCU 23 through the disposal line 34.
  • the GCU 23 disposes of the surplus boil-off gas BOG as described above.
  • the downstream pump 42 is provided downstream of the upstream pump 41 in the first line 31 and pumps the liquefied gas LG at a higher pressure than the upstream pump 41, and the liquefied gas tank and a second line 32 for introducing the boil-off gas BOG generated by evaporating the liquefied gas LG in the auxiliary machine 22 .
  • the second line 32 is provided with a compressor that pumps the boil-off gas BOG at a pressure higher than the discharge side of the upstream pump 41 and lower than the discharge side of the downstream pump 42.
  • the amount of boil-off gas BOG burned by the GCU 23 can be suppressed by burning the surplus boil-off gas BOG that cannot be consumed by the auxiliary machine 22 by the main machine 21. Therefore, the boil-off gas BOG can be treated more efficiently.
  • the ship 1 of the above embodiment further includes a first heat exchanger 45 arranged downstream of the compressor 44 in the second line 32 and performing heat exchange with water such as seawater outside the hull 2. ing.
  • a first heat exchanger 45 arranged downstream of the compressor 44 in the second line 32 and performing heat exchange with water such as seawater outside the hull 2. ing.
  • the temperature of the boil-off gas BOG flowing into the first line 31 from the second line 32 through the mixing line 33A is changed to normal temperature by heat exchange with water such as seawater in the first heat exchanger 45, for example. to some extent. Therefore, the temperature of the liquefied gas LG in the first line 31 after being mixed with the boil-off gas BOG is increased. Therefore, the amount of energy required for vaporizing the liquefied gas LG in the evaporator 46 in order to burn it in the main engine 21 after passing through the downstream pump 42 can be reduced. In this respect as well, the boil-off gas BOG can be treated more efficiently.
  • the first line 31 further has at least one bent portion 48k downstream of the junction 31j between the first line 31 and the mixing lines 33A and 33B.
  • the first line 31 is further arranged downstream of the confluence 31j between the first line 31 and the mixing lines 33A and 33B.
  • An offset vent 48 is provided to absorb the expansion and contraction deformation of the body, and the bent portion 48k constitutes a part of the offset vent 48.
  • the bent portion 48k of the offset vent 48 provided in the first line 31 to absorb the thermal contraction due to the internal fluid and the expansion and contraction deformation of the hull 2 in the fore-and-aft direction FA is used to mix the boil-off gas BOG and the liquefied gas LG.
  • can be effectively used to promote As a result, there is no need to separately provide a stirrer or an additional bending portion 48k for promoting the mixing of the boil-off gas BOG and the liquefied gas LG, and cost increases can be suppressed.
  • a fuel supply system 30B in the ship 1 of this embodiment includes a second heat exchanger 49 in addition to the configuration of the fuel supply system 30A in the first embodiment.
  • the second heat exchanger 49 mixes the boil-off gas BOG flowing in the mixing line 33B and the liquefied gas LG flowing downstream of the downstream pump 42 in the first line 31, that is, the liquefied gas LG after being mixed with the boil-off gas BOG. heat exchange between
  • the temperature of the liquefied gas LG in the first line 31 that has passed through the downstream pump 42 is, for example, about -110°C.
  • the temperature of the boil-off gas BOG in the mixing line 33B is lowered, for example, from 30°C to -50°C.
  • the temperature of the liquefied gas LG flowing downstream of the downstream pump 42 in the first line 31 can be increased.
  • the mass flow rate of the boil-off gas BOG condensed with the liquefied gas LG in the first line 31 can be increased. can.
  • the second heat exchanger 49 that exchanges heat between the mixing line 33B and the portion downstream of the downstream pump 42 in the first line 31 is provided.
  • the boil-off gas BOG can be treated more efficiently.
  • auxiliary machine 22 is exemplified as a generator engine.
  • the case where the first heat exchanger 45 and the offset vent 48 are provided has been described. good.
  • the bent portion 48k may have any shape that promotes mixing, and is not limited to being bent in a rectangular wave shape.
  • the bent portion 48k may be bent in a sawtooth shape or curved in a spiral shape, for example.
  • the installation number of the main machine 21 and the auxiliary machine 22, and an installation position can be changed suitably.
  • the numerical values of the pressure and temperature of the liquefied gas LG and the boil-off gas BOG in each part of the fuel supply systems 30A and 30B shown in the above embodiment are merely examples.
  • LNG was used as an example of the liquefied gas to be burned in the main engine 21 and the auxiliary engine 22, but if it can be burned in the main engine 21 and the auxiliary engine 22, a liquefied gas other than LNG can be used. There may be.
  • an equipment configuration without the evaporator 46 is possible.
  • seawater is used as the heat exchange coolant in the first heat exchanger 45, fresh water or glycol water that can be used in the ship may be used.
  • a ship 1 includes a hull 2, a liquefied gas tank 10 provided in the hull 2 and storing a liquefied gas LG, and introducing the liquefied gas LG in the liquefied gas tank 10 into a main engine 21.
  • the accessory includes a generator engine.
  • Liquefied gas LG includes LNG.
  • the liquefied gas LG stored in the liquefied gas tank 10 is introduced into the main engine 21 through the first line 31 .
  • the liquefied gas LG is pressurized by the upstream pump 41 and then further pressurized to a higher pressure by the downstream pump 42 and introduced into the main engine 21 .
  • the liquefied gas LG introduced into the main engine 21 is consumed by being burned in the main engine 21 after being vaporized.
  • Boil-off gas BOG generated by evaporating the liquefied gas LG in the liquefied gas tank 10 is introduced into the auxiliary machine 22 through the second line 32 .
  • the boil-off gas BOG introduced into the auxiliary machine 22 is consumed by being burned in the auxiliary machine 22 .
  • the boil-off gas BOG exceeding the consumption of the boil-off gas BOG in the auxiliary machine 22 passes through the mixing lines 33A and 33B, and flows through the first line 31 at an intermediate portion between the upstream pump 41 and the downstream pump 42 in the first line 31. It is mixed with the liquefied gas LG.
  • the boil-off gas BOG flowing from the second line 32 into the mixing lines 33A and 33B is compressed by the compressor 44, and is higher than the discharge side of the upstream pump 41 and higher than the discharge side of the downstream pump 42. is considered to be low pressure.
  • the liquefied gas LG in the first line 31 is at the discharge side pressure of the upstream pump 41 at the portion where the boil-off gas BOG flows into the first line 31 from the mixing lines 33A and 33B.
  • the pressure of the boil-off gas BOG flowing from the mixing lines 33A and 33B is higher than the pressure of the liquefied gas LG in the first line 31 . Therefore, the boil-off gas BOG flowing into the first line 31 from the mixing lines 33A and 33B is mixed with the liquefied gas LG in the first line 31 in the intermediate portion between the upstream pump 41 and the downstream pump 42 in the first line 31. be done.
  • the temperature of the liquefied gas LG is increased by being pressurized by the upstream pump 41, the temperature is lower than the saturation temperature after pressurization, so the boil-off gas BOG flowing from the mixing lines 33A and 33B is cooled and condensed. do.
  • the boil-off gas BOG mixed with the liquefied gas LG in this manner is sent to the main engine 21 and burned together with the liquefied gas LG.
  • the amount of boil-off gas BOG to be burned in the GCU 23 can be suppressed. Therefore, the boil-off gas BOG can be treated more efficiently.
  • the ship 1 according to the second aspect is the ship 1 of (1), is arranged downstream of the compressor 44 in the second line 32, and performs heat exchange with the refrigerant.
  • a heat exchanger 45 is further provided.
  • the temperature of the boil-off gas BOG flowing from the second line 32 through the mixing lines 33A and 33B into the first line 31 has risen to about normal temperature due to heat exchange with the refrigerant in the first heat exchanger 45. Therefore, the temperature of the liquefied gas LG in the first line 31 after mixing with the boil-off gas BOG can be increased. Therefore, the amount of energy required for vaporizing the liquefied gas LG for combustion in the main engine 21 after passing through the downstream pump 42 can be reduced. In this respect as well, the boil-off gas BOG can be treated more efficiently.
  • the ship 1 according to the third aspect is the ship 1 of (1) or (2), wherein the first line 31 is a junction of the first line 31 and the mixing lines 33A and 33B. It has at least one bent portion 48k downstream of 31j.
  • the flow of the liquefied gas LG in the first line 31 into which the boil-off gas BOG has flowed from the mixing lines 33A and 33B is stirred by passing through the bent portion 48k. This promotes mixing of the boil-off gas BOG and the liquefied gas LG.
  • the ship 1 according to the fourth aspect is the ship 1 of (3), wherein the first line 31 is located downstream of a junction 31j between the first line 31 and the mixing lines 33A and 33B.
  • An offset vent 48 is provided on the side to absorb thermal contraction due to the internal fluid and expansion and contraction deformation of the hull 2 in the fore-and-aft direction, and the bent portion 48k constitutes a part of the offset vent 48. As shown in FIG.
  • the offset vent 48 provided in the first line 31 for absorbing thermal contraction due to the internal fluid and expansion and contraction deformation of the hull 2 in the fore and aft direction. Flexure 48k can be utilized. Therefore, there is no need to separately provide the bent portion 48k for promoting the mixing of the boil-off gas BOG and the liquefied gas LG, and cost increases can be suppressed.
  • the ship 1 according to the fifth aspect is the ship 1 according to any one of (1) to (4), and the mixing line 33B and the downstream pump 42 in the first line 31 are It further comprises a second heat exchanger 49 that exchanges heat with the downstream portion.
  • the temperature of the boil-off gas BOG sent from the mixing line 33B to the first line 31 is lowered by heat exchange by the second heat exchanger 49 downstream of the downstream pump 42 .
  • the volume of the boil-off gas BOG is reduced, and the mass flow rate of the boil-off gas BOG mixed with the liquefied gas LG in the first line 31 from the mixing line 33B can be increased.
  • the boil-off gas can be treated more efficiently.

Landscapes

  • 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)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

La présente invention concerne un navire comprenant une première conduite à travers laquelle un gaz liquéfié provenant d'un réservoir de gaz liquéfié est introduit dans des machines de propulsion, une pompe amont qui est disposée sur la première conduite et qui pompe le gaz liquéfié, une pompe aval qui est disposée en aval de la pompe amont sur la première conduite et qui pompe le gaz liquéfié à une pression plus élevée que la pompe amont, une seconde conduite à travers laquelle du gaz évaporé à l'intérieur du réservoir de gaz liquéfié est introduit dans des machines auxiliaires, un compresseur qui est disposé sur la seconde conduite et qui pompe le gaz évaporé à une pression plus élevée que celle du côté de refoulement de la pompe amont et moins élevée que celle du côté de refoulement de la pompe aval, et une conduite de mélange reliant une partie intermédiaire entre les pompes amont et aval sur la première conduite à une partie en aval du compresseur sur la seconde conduite, la conduite de mélange permettant au gaz évaporé dans la seconde conduite de se mélanger au gaz liquéfié dans la première conduite.
PCT/JP2022/013584 2021-03-31 2022-03-23 Navire WO2022210178A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013209000A (ja) * 2012-03-30 2013-10-10 Mitsubishi Heavy Ind Ltd 船舶、液化燃料ガス移送装置および液化燃料ガス移送方法
JP6389404B2 (ja) * 2014-09-12 2018-09-12 川崎重工業株式会社 ガス供給システム及びそれを備える船舶
JP2018531833A (ja) * 2015-10-16 2018-11-01 クライオスター・ソシエテ・パール・アクシオンス・サンプリフィエ 少なくとも１つのエンジンに供給する目的のためボイルオフガスを処理する方法及び装置
JP2019011735A (ja) * 2017-06-30 2019-01-24 三井Ｅ＆Ｓ造船株式会社 液化ガス燃料供給システム
KR20200067716A (ko) * 2018-12-04 2020-06-12 한국조선해양 주식회사 증발가스 재액화 시스템 및 이를 포함하는 선박

Family Cites Families (2)

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Publication number Priority date Publication date Assignee Title
JPS6366727U (fr) 1986-10-20 1988-05-06
JP2018103955A (ja) * 2016-12-28 2018-07-05 川崎重工業株式会社 船舶

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013209000A (ja) * 2012-03-30 2013-10-10 Mitsubishi Heavy Ind Ltd 船舶、液化燃料ガス移送装置および液化燃料ガス移送方法
JP6389404B2 (ja) * 2014-09-12 2018-09-12 川崎重工業株式会社 ガス供給システム及びそれを備える船舶
JP2018531833A (ja) * 2015-10-16 2018-11-01 クライオスター・ソシエテ・パール・アクシオンス・サンプリフィエ 少なくとも１つのエンジンに供給する目的のためボイルオフガスを処理する方法及び装置
JP2019011735A (ja) * 2017-06-30 2019-01-24 三井Ｅ＆Ｓ造船株式会社 液化ガス燃料供給システム
KR20200067716A (ko) * 2018-12-04 2020-06-12 한국조선해양 주식회사 증발가스 재액화 시스템 및 이를 포함하는 선박

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CN117098705A (zh) 2023-11-21

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