WO2012043259A1 - Fuel supply system for ship - Google Patents
Fuel supply system for ship Download PDFInfo
- Publication number
- WO2012043259A1 WO2012043259A1 PCT/JP2011/071125 JP2011071125W WO2012043259A1 WO 2012043259 A1 WO2012043259 A1 WO 2012043259A1 JP 2011071125 W JP2011071125 W JP 2011071125W WO 2012043259 A1 WO2012043259 A1 WO 2012043259A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- tank
- boil
- fuel supply
- supply system
- Prior art date
Links
Images
Classifications
-
- 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
- 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
- F02D19/021—Control of components of the fuel supply system
- F02D19/022—Control of components of the fuel supply system to adjust the fuel pressure, temperature or composition
-
- 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
- F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
-
- 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
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- 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
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0221—Fuel storage reservoirs, e.g. cryogenic tanks
- F02M21/0224—Secondary gaseous fuel storages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J99/00—Subject matter not provided for in other groups of this subclass
- B63J2099/001—Burning of transported goods, e.g. fuel, boil-off or refuse
- B63J2099/003—Burning of transported goods, e.g. fuel, boil-off or refuse of cargo oil or fuel, or of boil-off gases, e.g. for propulsive purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
-
- 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
-
- 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
- the present invention provides a marine fuel supply applied to a ship (oil tanker, container ship, car carrier ship, etc.) equipped with an engine (internal combustion engine) capable of burning (using) liquefied natural gas (LNG).
- the present invention relates to a system (marine fuel supply device).
- Patent Document 1 As a marine fuel supply system applied to a ship equipped with an engine capable of burning liquefied natural gas, for example, one disclosed in Patent Document 1 is known.
- the internal pressure of the fuel feed tank 8 is pressure
- a high-pressure compressor unit 16 for pushing the boil-off gas generated in the fuel storage tank 6 into the fuel supply tank 8 is required, which increases the manufacturing cost.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a marine fuel supply system that enables long-distance navigation and can reduce manufacturing costs.
- the present invention employs the following means in order to solve the above problems.
- the marine fuel supply system stores a liquefied natural gas, and temporarily stores an independent tank whose internal pressure is maintained at a substantially atmospheric pressure, and the liquefied natural gas sent from the independent tank.
- a gas tank that compresses the boil-off gas guided from the independent tank and the boil-off gas supplied to the independent tank, and supplies the boil-off gas to at least one of the internal combustion engine and the gas combustion device disposed on the downstream side Machine.
- the boil-off gas is entirely consumed by at least one of the internal combustion engine and the gas combustion device arranged on the downstream side of the (high pressure) gas compressor, and the surplus boil-off gas is consumed. Since gas is not released to the outside of the ship, long-distance navigation can be achieved.
- the boil-off gas generated in the storage tank is not pushed into the feed tank, so a high-pressure gas compressor (compressor unit) for pushing the boil-off gas generated in the storage tank into the feed tank is installed. This can be eliminated, and the manufacturing cost can be reduced.
- a marine fuel supply system stores a liquefied natural gas, and temporarily stores an independent tank whose internal pressure is maintained at substantially atmospheric pressure, and the liquefied natural gas sent from the independent tank.
- a supply tank that is stored in the gas tank, a gas compressor that compresses the boil-off gas introduced from the independent tank, and supplies the boil-off gas to a gas combustion device disposed on the downstream side, and the supply tank
- a first fuel supply system that evaporates the delivered liquefied natural gas and leads it to an internal combustion engine disposed downstream, and a gas combustion apparatus disposed downstream from the boil-off gas delivered from the gas compressor
- the boil-off gas is completely consumed by the gas combustion device disposed downstream of the (low-pressure) gas compressor, and the surplus boil-off gas is released to the outside of the ship. It is possible to make long-distance navigation possible.
- the boil-off gas generated in the storage tank is not pushed into the feed tank, so a high-pressure gas compressor (compressor unit) for pushing the boil-off gas generated in the storage tank into the feed tank is installed. This can be eliminated, and the manufacturing cost can be reduced.
- the liquefied natural gas stored in the inside of the supply tank is taken in and evaporated, and the evaporated natural gas is returned to the supply tank again, It is more preferable that a boosting evaporator for boosting the internal pressure of the supply tank to a predetermined pressure is provided.
- the liquefied natural gas stored in the supply tank is sent out (discharged) by the internal pressure (accumulated pressure) in the supply tank.
- a pump or the like for sending the stored liquefied natural gas to the downstream side can be eliminated, the configuration can be simplified, and the degree of freedom in layout of the components can be increased.
- the boil-off gas is heat-exchanged with the boil-off gas in the middle of the second fuel supply system located between the independent tank and the gas compressor. It is more preferable that a heat exchanger for cooling other fluids with the cold heat is provided.
- boil-off gas naturally generated in the independent tank and, for example, air circulating in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 shown in FIG.
- the refrigerant (other fluid) such as cooling water circulating in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 is cooled to a predetermined temperature (for example, ⁇ 2 ° C.).
- a predetermined temperature for example, ⁇ 2 ° C.
- an evaporator for evaporating the liquefied natural gas sent from the feed tank and a temperature controller for cooling the natural gas led from the evaporator are provided. More preferably.
- the aftercooler required for cooling the boil-off gas sent from the gas compressor can be eliminated, and the manufacturing cost can be reduced.
- the ship which concerns on the 3rd aspect of this invention has comprised one of the said marine fuel supply systems.
- the boil-off gas generated in the storage tank is all consumed by at least the gas combustion device arranged on the downstream side of the gas compressor, and surplus boil-off gas is released to the outside of the ship. Because there is no longer, long-distance navigation is possible.
- FIG. 1 is a schematic configuration diagram of a marine fuel supply system according to a first embodiment of the present invention. It is a schematic block diagram of the marine fuel supply system which concerns on 2nd Embodiment of this invention. It is a schematic block diagram of the marine fuel supply system which concerns on 3rd Embodiment of this invention.
- FIG. 1 is a schematic configuration diagram of a marine fuel supply system according to the present embodiment. As shown in FIG.
- the marine fuel supply system 1 can, for example, burn (or use) heavy oil and liquefied natural gas (LNG), an internal combustion engine (DFE: Dual Fuel Engine or An LNG (storage) tank installed in a ship (oil tanker, container ship, or car carrier) equipped with a gas fueled engine) 2 and a gas combustion device (auxiliary machine) 3 such as a boiler or an incinerator 4, an LNG feed tank 5, a vaporizer (vaporizer) 6, a pre-cooler (pre-cooler) 7, a (first: high pressure) gas compressor 8, and an after cooler (after -Cooler) 9, a gas heater 10, a first supply line 11, a second supply line 12, a third supply line 13, a fourth supply line 14, and a fifth A supply line 15; A sixth supply line 16, a seventh supply line 17, and an eighth supply line 18 are provided.
- LNG heavy oil and liquefied natural gas
- DFE Dual Fuel Engine or An LNG (storage) tank installed in a ship (oil tanker, container ship, or car carrier
- the internal combustion engine 2 is an internal combustion engine that can be operated by switching between a mode using only heavy oil (oil mode) and a mode using gas as main fuel and heavy oil as pilot fuel (gas mode).
- the internal combustion engine 2 drives (rotates) a propulsion engine (main machine) that drives (rotates) a propeller shaft (not shown) and a propeller for propulsion (not shown) or a generator (not shown).
- a propulsion engine main machine
- main machine drives (rotates) a propeller shaft (not shown) and a propeller for propulsion (not shown) or a generator (not shown).
- the LNG storage tank 4 is an independent (self-supporting) tank (also referred to as an “independent tank”), and is a storage container that stores LNG that enables long-distance navigation. Moreover, the LNG storage tank 4 is arrange
- a heat insulation structure (heat insulation material) 21 is provided around (outside) the LNG storage tank 4, and heat input from the circumference (outside) of the LNG storage tank 4 into the LNG storage tank 4 is as much as possible (substantially). It has been reduced.
- the first supply line 11 is a liquid supply pipe (liquid pipe) that guides the LNG stored in the LNG storage tank 4 to the liquid inlet of the LNG supply tank 5, and the LNG stored in the LNG storage tank 4. Is delivered (discharged) by an LNG transfer pump (LNG Feed Pump) 22 disposed in the LNG storage tank 4.
- LNG transfer pump LNG Feed Pump
- the LNG supply tank 5 is a vacuum-insulated cylindrical tank (also referred to as “vacuum heat-insulating tank”) or an externally-insulated cylindrical tank, and is supplied to the internal combustion engine 2 and the gas combustion device 3. It is a storage container for dispensing that temporarily stores the previous LNG (for example, LNG necessary for one cruise in the engine emission control sea area (ECA: Emission Control Area)).
- the LNG supply tank 5 takes in (suctions) LNG stored therein, evaporates (vaporizes) it, and returns the evaporated (vaporized) natural gas to the LNG supply tank 5 again. Is increased (pressurized) to a predetermined pressure (for example, 0.6 MPa), and a pressure increase (pressurization) vaporizer (Vaporizer: vaporizer) 23 is provided.
- a heating source for evaporating (vaporizing) LNG in the vaporizer 23 steam generated in a boiler, warm water warmed by the steam or waste heat of equipment, or the like is used.
- the second supply line 12 is a liquid supply pipe (liquid pipe) that guides LNG stored in the LNG supply tank 5 to the liquid inlet of the vaporizer 6, and the LNG stored in the LNG supply tank 5 is , It is sent out (discharged) by the internal pressure (accumulated pressure) in the LNG supply tank 5.
- the vaporizer 6 is a heat exchanger that forcibly evaporates (vaporizes) LNG taken from the liquid inlet and raises the natural gas to a predetermined temperature (for example, ⁇ 130 ° C.). Steam generated in the boiler, warm water heated by the steam or waste heat of the equipment, or the like is used.
- the third supply line 13 is a gas supply pipe (gas pipe) that guides natural gas obtained by forcibly evaporating (vaporizing) LNG in the vaporizer 6 to the middle of the seventh supply line 17. .
- the fourth supply line 14 is a gas supply pipe (gas pipe) that guides boil-off gas naturally generated in the LNG storage tank 4 to the gas inlet of the precooler 7.
- the precooler 7 is a heat exchanger that cools the boil-off gas taken in from the gas inlet to a predetermined temperature (for example, ⁇ 100 ° C.).
- a predetermined temperature for example, ⁇ 100 ° C.
- LNG or the like stored in the LNG storage tank 4 is used. Used.
- the fifth supply line 15 is a gas supply pipe (gas pipe) that guides the boil-off gas cooled in the precooler 7 to the gas suction port of the gas compressor 8.
- the gas compressor 8 is a high-pressure compressor that pressurizes (pressurizes) the boil-off gas sucked from the gas inlet to a predetermined pressure (for example, 0.6 MPa).
- the sixth supply line 16 is a gas supply pipe (gas pipe) that guides the boil-off gas pressurized (pressurized) by the gas compressor 8 to the gas inlet of the aftercooler 9.
- the aftercooler 9 is a heat exchanger that cools the boil-off gas that has been pressurized (pressurized) by the gas compressor 8 to a predetermined temperature (for example, 50 ° C. or less), and the cooling source is the inside of the LNG storage tank 4. LNG, chilled water cooled by the LNG, engine room cooling fresh water, and the like are used.
- the seventh supply line 17 supplies the boil-off gas cooled in the aftercooler 9 and / or natural gas introduced into the seventh supply line 17 through the third supply line 13 to the gas heater 10.
- This is a gas supply pipe (gas pipe) leading to the gas inlet.
- the gas heater 10 is used when the temperature of the gas supplied to the eighth supply line 18 is kept at 0 ° C. or higher and the internal combustion engine 2 is heated so that a low-temperature gas of 0 ° C. or lower is not supplied.
- the gas compressor 8 is not operated and the boil-off gas is supplied to the gas combustion device (boiler or gas incinerator) 3 only with the internal pressure in the LNG storage tank 4, or the temperature of the LNG storage tank 4 is Also used when heating to room temperature.
- the eighth supply line 18 is a gas supply pipe (gas pipe) that guides the gas (boil-off gas and / or natural gas) whose temperature is adjusted by the gas heater 10 to the gas inlet of the internal combustion engine 2 and / or the gas combustion device 3.
- a flow rate control valve (gas valve unit) 24 for adjusting the amount of gas supplied to the internal combustion engine 2 and the gas combustion device 3 and the gas pressure is connected.
- the boil-off gas is all consumed by at least one of the internal combustion engine 2 and the gas combustion device 3 arranged on the downstream side of the gas compressor 8, and surplus boil-off gas.
- the boil-off gas generated in the LNG storage tank 4 is not pushed into the LNG supply tank 5, the high pressure for pushing the boil-off gas generated in the LNG storage tank 4 into the LNG supply tank 5 is not provided.
- a gas compressor compressor unit
- the manufacturing cost can be reduced.
- the LNG stored in the LNG supply tank 5 is sent out (discharged) by the internal pressure (accumulated pressure) in the LNG supply tank 5. Therefore, a pump or the like for sending LNG stored in the LNG supply tank 5 to the downstream side can be made unnecessary, the configuration can be simplified, and the degree of freedom in layout of the components can be increased. it can.
- FIG. 2 is a schematic configuration diagram of the marine fuel supply system according to the present embodiment.
- the marine fuel supply system 31 according to the present embodiment includes a first fuel supply system 32 that supplies natural gas from the LNG storage tank 4 to the internal combustion engine 2, and a gas combustion device from the LNG storage tank 4. 3 differs from that of the first embodiment described above in that a second fuel supply system 33 that supplies boil-off gas to 3 is provided separately and independently. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.
- symbol is attached
- the first fuel supply system 32 includes a first supply line 11, an LNG supply tank 5, a second supply line 12, a vaporizer 6, a ninth supply line 34, a gas heater 10, 8 supply lines 18, and these first supply line 11, LNG feed tank 5, second supply line 12, vaporizer 6, ninth supply line 34, gas heater 10, and eighth supply line 18 are arranged in order from the LNG storage tank 4 side (upstream side).
- the ninth supply line 34 is a gas supply pipe (gas pipe) for guiding natural gas obtained by forcibly evaporating (vaporizing) LNG in the vaporizer 6 to the gas inlet of the gas heater 10.
- the second fuel supply system 33 includes a tenth supply line 35, a heat exchanger 36, an eleventh supply line 37, a (second: low pressure) gas compressor 38, and a twelfth supply line 39.
- the heater 10 and the eighth supply line 18 are arranged in order from the LNG storage tank 4 side (upstream side).
- the tenth supply line 35 is a gas supply pipe (gas pipe) that guides boil-off gas naturally generated in the LNG storage tank 4 to the gas inlet of the heat exchanger 36.
- the heat exchanger 36 is a boil-off gas that is naturally generated in the LNG storage tank 4 and, for example, a refrigerant (other fluid) such as cooling water that circulates in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40.
- a refrigerant other fluid
- a cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 and a refrigerant such as cooling water in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40
- a refrigerant such as cooling water in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40
- It is a pump that supplies a refrigerant (other fluid) such as cooling water in the ship to the heat exchanger 36 side while supplying the other fluid) into the ship.
- the eleventh supply line 37 is a gas supply pipe (gas pipe) that guides the boil-off gas heat-exchanged in the heat exchanger 36 to the gas suction port of the gas compressor 38.
- the gas compressor 38 is a low-pressure compressor that pressurizes (pressurizes) the boil-off gas sucked from the gas inlet to a predetermined pressure (for example, 0.196 MPaA).
- the twelfth supply line 39 is a gas supply pipe (gas pipe) that guides the boil-off gas pressurized (pressurized) by the gas compressor 38 to the gas inlet of the gas heater 10.
- the flow control valve 24 is located upstream from the flow control valve 24, and is located in the middle of the eighth supply line 18 constituting the first fuel supply system 32 and upstream from the flow control valve 24. Then, the middle of the eighth supply line 18 constituting the second fuel supply system 33 is communicated via the bypass pipe 42, and a flow rate control valve (gas valve unit) 43 is provided in the middle of the bypass pipe 42.
- a flow rate control valve (gas valve unit) 43 is provided in the middle of the bypass pipe 42.
- the marine fuel supply system 31 According to the marine fuel supply system 31 according to the present embodiment, all of the boil-off gas is consumed by the gas combustion device 3 disposed on the downstream side of the gas compressor 38, and surplus boil-off gas is released to the outside of the ship. So that long-distance navigation is possible. Further, since the boil-off gas generated in the LNG storage tank 4 is not pushed into the LNG supply tank 5, the high pressure for pushing the boil-off gas generated in the LNG storage tank 4 into the LNG supply tank 5 is not provided. A gas compressor (compressor unit) can be dispensed with, and the manufacturing cost can be reduced.
- the LNG stored in the LNG supply tank 5 is sent (discharged) by the internal pressure (accumulated pressure) in the LNG supply tank 5. Therefore, a pump or the like for sending LNG stored in the LNG supply tank 5 to the downstream side can be made unnecessary, the configuration can be simplified, and the degree of freedom in layout of the components can be increased. it can.
- the refrigerant (other fluid) such as cooling water that circulates through the heat exchange
- the refrigerant (other fluid) such as cooling water that circulates in the refrigerant pipe (chiller water pipe) 40 for the cooling heat exchanger is predetermined. It is cooled to a temperature of (for example, ⁇ 2 ° C.).
- a temperature of for example, ⁇ 2 ° C.
- the boil-off gas whose pressure has been increased (pressurized) by the gas compressor 38 is used only by the gas combustion device 3.
- a low-pressure specification can be adopted, and the manufacturing cost can be reduced.
- the gas compressor 38 can be stopped when the boil-off gas itself has a predetermined pressure (for example, 0.17 MPa).
- a predetermined pressure for example, 0.17 MPa.
- FIG. 3 is a schematic configuration diagram of the marine fuel supply system according to the present embodiment.
- the marine fuel supply system 51 according to the present embodiment is the same as that of the first embodiment described above in that a temperature controller 52 is provided in the middle of the third supply line 13.
- a temperature controller 52 is provided in the middle of the third supply line 13.
- other components are the same as those of the first embodiment described above, description of these components is omitted here.
- symbol is attached
- the temperature controller 52 ejects LNG guided through the thirteenth supply pipe 53 from a spray nozzle (not shown) disposed therein and flows (flows) into the seventh supply line 17. It is a gas-liquid contact heat exchanger that cools the temperature of natural gas.
- the thirteenth supply pipe 53 is a liquid supply pipe (liquid pipe) that guides a part of the LNG passing through the second supply pipe 12 to the spray nozzle of the temperature controller 52.
- the boil-off gas is all consumed by at least one of the internal combustion engine 2 and the gas combustion device 3 arranged on the downstream side of the gas compressor 8, and surplus boil-off gas.
- the boil-off gas generated in the LNG storage tank 4 is not pushed into the LNG supply tank 5, the high pressure for pushing the boil-off gas generated in the LNG storage tank 4 into the LNG supply tank 5 is not provided.
- a gas compressor compressor unit
- the manufacturing cost can be reduced.
- the LNG stored in the LNG supply tank 5 is sent out (discharged) by the internal pressure (accumulated pressure) in the LNG supply tank 5. Therefore, a pump or the like for sending LNG stored in the LNG supply tank 5 to the downstream side can be made unnecessary, the configuration can be simplified, and the degree of freedom in layout of the components can be increased. it can.
- the aftercooler 9 required for cooling the boil-off gas sent from the gas compressor 8 can be eliminated, and the manufacturing cost can be reduced. Can be reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Provided is a fuel supply system for a ship, enabling the ship to sail a long distance and capable of being manufactured at reduced cost. A fuel supply system for a ship is provided with: an independent tank (4) for storing liquefied natural gas and having an internal pressure maintained at substantially the atmospheric pressure; a feeding tank (5) for temporarily storing the liquefied natural gas delivered from the independent tank (4); and a gas compressor (8) which compresses boil off-gas introduced from the independent tank (4) and which supplies the boil off-gas to either the internal combustion engine (2) and/or the gas combustion device (3) which are disposed downstream of the gas compressor (8).
Description
本発明は、液化天然ガス(LNG)を焚くことができる(使用することができる)エンジン(内燃機関)を搭載した船舶(オイルタンカーやコンテナ船、あるいは自動車運搬船等)に適用される舶用燃料供給システム(舶用燃料供給装置)に関するものである。
INDUSTRIAL APPLICABILITY The present invention provides a marine fuel supply applied to a ship (oil tanker, container ship, car carrier ship, etc.) equipped with an engine (internal combustion engine) capable of burning (using) liquefied natural gas (LNG). The present invention relates to a system (marine fuel supply device).
液化天然ガスを焚くことができるエンジンを搭載した船舶に適用される舶用燃料供給システムとしては、例えば、特許文献1に開示されたものが知られている。
As a marine fuel supply system applied to a ship equipped with an engine capable of burning liquefied natural gas, for example, one disclosed in Patent Document 1 is known.
しかしながら、上記特許文献1に開示されたものでは、規定量を超えるボイルオフガス(BOG)が発生して、燃料貯蔵タンク6の内圧を減圧するコンプレッサユニット16の吐出圧力が燃料送給タンク8の圧力と同等になった場合、燃料貯蔵タンク6の圧力が所定の圧力を超えてしまい、安全弁が開き、余剰のボイルオフガスは、船外に放出されるものと想定される。
そのため、上記特許文献1に開示されたものは、長距離航行には不向きである。 However, in the one disclosed inPatent Document 1, boil-off gas (BOG) exceeding a specified amount is generated, and the discharge pressure of the compressor unit 16 that reduces the internal pressure of the fuel storage tank 6 is the pressure of the fuel supply tank 8. It is assumed that the pressure in the fuel storage tank 6 exceeds a predetermined pressure, the safety valve is opened, and excess boil-off gas is released out of the ship.
For this reason, the one disclosed inPatent Document 1 is not suitable for long-distance navigation.
そのため、上記特許文献1に開示されたものは、長距離航行には不向きである。 However, in the one disclosed in
For this reason, the one disclosed in
また、上記特許文献1に開示されたものでは、燃料送給タンク8の内圧が増圧システム24により昇圧(加圧)されるようになっている。
そのため、燃料貯蔵タンク6で発生したボイルオフガスを燃料送給タンク8内に押し込むための高圧のコンプレッサユニット16が必要となり、製造コストが嵩んでしまうという問題点がある。 Moreover, in what was disclosed by the saidpatent document 1, the internal pressure of the fuel feed tank 8 is pressure | voltage-risen (pressurized) by the pressure increase system 24. FIG.
For this reason, a high-pressure compressor unit 16 for pushing the boil-off gas generated in the fuel storage tank 6 into the fuel supply tank 8 is required, which increases the manufacturing cost.
そのため、燃料貯蔵タンク6で発生したボイルオフガスを燃料送給タンク8内に押し込むための高圧のコンプレッサユニット16が必要となり、製造コストが嵩んでしまうという問題点がある。 Moreover, in what was disclosed by the said
For this reason, a high-
本発明は、このような事情に鑑みてなされたものであって、長距離航行を可能にし、かつ、製造コストを低減させることができる舶用燃料供給システムを提供することを目的とする。
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a marine fuel supply system that enables long-distance navigation and can reduce manufacturing costs.
本発明は、上記課題を解決するため、以下の手段を採用した。
本発明の第1の態様に係る舶用燃料供給システムは、液化天然ガスを貯蔵するとともに、内圧が略大気圧に維持された独立タンクと、前記独立タンクから送出された前記液化天然ガスを一時的に貯蔵しておく送給タンクと、前記独立タンクから導かれたボイルオフガスを圧縮して、下流側に配置された内燃機関およびガス燃焼装置の少なくともいずれかに、前記ボイルオフガスを供給するガス圧縮機と、を備えている。 The present invention employs the following means in order to solve the above problems.
The marine fuel supply system according to the first aspect of the present invention stores a liquefied natural gas, and temporarily stores an independent tank whose internal pressure is maintained at a substantially atmospheric pressure, and the liquefied natural gas sent from the independent tank. A gas tank that compresses the boil-off gas guided from the independent tank and the boil-off gas supplied to the independent tank, and supplies the boil-off gas to at least one of the internal combustion engine and the gas combustion device disposed on the downstream side Machine.
本発明の第1の態様に係る舶用燃料供給システムは、液化天然ガスを貯蔵するとともに、内圧が略大気圧に維持された独立タンクと、前記独立タンクから送出された前記液化天然ガスを一時的に貯蔵しておく送給タンクと、前記独立タンクから導かれたボイルオフガスを圧縮して、下流側に配置された内燃機関およびガス燃焼装置の少なくともいずれかに、前記ボイルオフガスを供給するガス圧縮機と、を備えている。 The present invention employs the following means in order to solve the above problems.
The marine fuel supply system according to the first aspect of the present invention stores a liquefied natural gas, and temporarily stores an independent tank whose internal pressure is maintained at a substantially atmospheric pressure, and the liquefied natural gas sent from the independent tank. A gas tank that compresses the boil-off gas guided from the independent tank and the boil-off gas supplied to the independent tank, and supplies the boil-off gas to at least one of the internal combustion engine and the gas combustion device disposed on the downstream side Machine.
前記第1の態様に係る舶用燃料供給システムによれば、ボイルオフガスは、(高圧)ガス圧縮機の下流側に配置された内燃機関およびガス燃焼装置の少なくともいずれかですべて消費され、余剰のボイルオフガスが、船外に放出されることがなくなるので、長距離航行を可能なものとすることができる。
また、貯蔵タンクで発生したボイルオフガスを送給タンク内に押し込む構成とはなっていないので、貯蔵タンクで発生したボイルオフガスを送給タンク内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marine fuel supply system according to the first aspect, the boil-off gas is entirely consumed by at least one of the internal combustion engine and the gas combustion device arranged on the downstream side of the (high pressure) gas compressor, and the surplus boil-off gas is consumed. Since gas is not released to the outside of the ship, long-distance navigation can be achieved.
The boil-off gas generated in the storage tank is not pushed into the feed tank, so a high-pressure gas compressor (compressor unit) for pushing the boil-off gas generated in the storage tank into the feed tank is installed. This can be eliminated, and the manufacturing cost can be reduced.
また、貯蔵タンクで発生したボイルオフガスを送給タンク内に押し込む構成とはなっていないので、貯蔵タンクで発生したボイルオフガスを送給タンク内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marine fuel supply system according to the first aspect, the boil-off gas is entirely consumed by at least one of the internal combustion engine and the gas combustion device arranged on the downstream side of the (high pressure) gas compressor, and the surplus boil-off gas is consumed. Since gas is not released to the outside of the ship, long-distance navigation can be achieved.
The boil-off gas generated in the storage tank is not pushed into the feed tank, so a high-pressure gas compressor (compressor unit) for pushing the boil-off gas generated in the storage tank into the feed tank is installed. This can be eliminated, and the manufacturing cost can be reduced.
本発明の第2の態様に係る舶用燃料供給システムは、液化天然ガスを貯蔵するとともに、内圧が略大気圧に維持された独立タンクと、前記独立タンクから送出された前記液化天然ガスを一時的に貯蔵しておく送給タンクと、前記独立タンクから導かれたボイルオフガスを圧縮して、下流側に配置されたガス燃焼装置に前記ボイルオフガスを供給するガス圧縮機と、前記送給タンクから送出された液化天然ガスを蒸発させて、下流側に配置された内燃機関に導く第1の燃料供給系統と、前記ガス圧縮機から送出されたボイルオフガスを、下流側に配置されたガス燃焼装置に導く第2の燃料供給系統と、を備えている。
A marine fuel supply system according to a second aspect of the present invention stores a liquefied natural gas, and temporarily stores an independent tank whose internal pressure is maintained at substantially atmospheric pressure, and the liquefied natural gas sent from the independent tank. A supply tank that is stored in the gas tank, a gas compressor that compresses the boil-off gas introduced from the independent tank, and supplies the boil-off gas to a gas combustion device disposed on the downstream side, and the supply tank A first fuel supply system that evaporates the delivered liquefied natural gas and leads it to an internal combustion engine disposed downstream, and a gas combustion apparatus disposed downstream from the boil-off gas delivered from the gas compressor And a second fuel supply system leading to
前記第2の態様に係る舶用燃料供給システムによれば、ボイルオフガスは、(低圧)ガス圧縮機の下流側に配置されたガス燃焼装置ですべて消費され、余剰のボイルオフガスが、船外に放出されることがなくなるので、長距離航行を可能なものとすることができる。
また、貯蔵タンクで発生したボイルオフガスを送給タンク内に押し込む構成とはなっていないので、貯蔵タンクで発生したボイルオフガスを送給タンク内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marine fuel supply system according to the second aspect, the boil-off gas is completely consumed by the gas combustion device disposed downstream of the (low-pressure) gas compressor, and the surplus boil-off gas is released to the outside of the ship. It is possible to make long-distance navigation possible.
The boil-off gas generated in the storage tank is not pushed into the feed tank, so a high-pressure gas compressor (compressor unit) for pushing the boil-off gas generated in the storage tank into the feed tank is installed. This can be eliminated, and the manufacturing cost can be reduced.
また、貯蔵タンクで発生したボイルオフガスを送給タンク内に押し込む構成とはなっていないので、貯蔵タンクで発生したボイルオフガスを送給タンク内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marine fuel supply system according to the second aspect, the boil-off gas is completely consumed by the gas combustion device disposed downstream of the (low-pressure) gas compressor, and the surplus boil-off gas is released to the outside of the ship. It is possible to make long-distance navigation possible.
The boil-off gas generated in the storage tank is not pushed into the feed tank, so a high-pressure gas compressor (compressor unit) for pushing the boil-off gas generated in the storage tank into the feed tank is installed. This can be eliminated, and the manufacturing cost can be reduced.
前記第1又は第2の態様に係る舶用燃料供給システムにおいて、前記送給タンクの内部に貯留された液化天然ガスを取り入れ、蒸発させて、蒸発した天然ガスを再び前記送給タンクに戻し、前記送給タンクの内圧を所定の圧力まで昇圧する昇圧用の蒸発器が設けられているとさらに好適である。
In the marine fuel supply system according to the first or second aspect, the liquefied natural gas stored in the inside of the supply tank is taken in and evaporated, and the evaporated natural gas is returned to the supply tank again, It is more preferable that a boosting evaporator for boosting the internal pressure of the supply tank to a predetermined pressure is provided.
このような舶用燃料供給システムによれば、送給タンク内に貯留された液化天然ガスは、送給タンク内の内圧(蓄圧)により送出(吐出)されることになるので、送給タンク内に貯留された液化天然ガスを下流側に送出するポンプ等を不要とすることができ、構成の簡略化を図ることができ、構成要素のレイアウトの自由度を高めることができる。
According to such a marine fuel supply system, the liquefied natural gas stored in the supply tank is sent out (discharged) by the internal pressure (accumulated pressure) in the supply tank. A pump or the like for sending the stored liquefied natural gas to the downstream side can be eliminated, the configuration can be simplified, and the degree of freedom in layout of the components can be increased.
前記第2の態様に係る舶用燃料供給システムにおいて、前記独立タンクと、前記ガス圧縮機との間に位置する前記第2の燃料供給系統の途中に、前記ボイルオフガスと熱交換させて前記ボイルオフガスの冷熱で他の流体を冷却する熱交換器が設けられているとさらに好適である。
In the marine fuel supply system according to the second aspect, the boil-off gas is heat-exchanged with the boil-off gas in the middle of the second fuel supply system located between the independent tank and the gas compressor. It is more preferable that a heat exchanger for cooling other fluids with the cold heat is provided.
このような舶用燃料供給システムによれば、独立タンク内で自然発生したボイルオフガスと、例えば、図2に示す冷房熱交換器用冷媒管(チラー水配管等)40内を循環する空気とが熱交換されて、冷房熱交換器用冷媒管(チラー水配管等)40内を循環する冷却水等の冷媒(他の流体)が、所定の温度(例えば、-2℃)まで冷却されることになる。
これにより、ボイルオフガスの冷熱を有効利用することができて、船内に別途設けられた冷凍機等の負荷を低減させることができ、船内で使用される(電気)エネルギーを低減させることができて、船舶のランニングコストを低減させることができる。 According to such a marine fuel supply system, boil-off gas naturally generated in the independent tank and, for example, air circulating in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 shown in FIG. Then, the refrigerant (other fluid) such as cooling water circulating in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 is cooled to a predetermined temperature (for example, −2 ° C.).
As a result, the cold energy of the boil-off gas can be used effectively, the load on the refrigerator provided separately in the ship can be reduced, and the (electric) energy used in the ship can be reduced. The running cost of the ship can be reduced.
これにより、ボイルオフガスの冷熱を有効利用することができて、船内に別途設けられた冷凍機等の負荷を低減させることができ、船内で使用される(電気)エネルギーを低減させることができて、船舶のランニングコストを低減させることができる。 According to such a marine fuel supply system, boil-off gas naturally generated in the independent tank and, for example, air circulating in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 shown in FIG. Then, the refrigerant (other fluid) such as cooling water circulating in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 is cooled to a predetermined temperature (for example, −2 ° C.).
As a result, the cold energy of the boil-off gas can be used effectively, the load on the refrigerator provided separately in the ship can be reduced, and the (electric) energy used in the ship can be reduced. The running cost of the ship can be reduced.
前記第1の態様に係る舶用燃料供給システムにおいて、前記送給タンクから送出された液化天然ガスを蒸発させる蒸発器と、この蒸発器から導かれた天然ガスを冷却する温度調節器とが設けられているとさらに好適である。
In the marine fuel supply system according to the first aspect, an evaporator for evaporating the liquefied natural gas sent from the feed tank and a temperature controller for cooling the natural gas led from the evaporator are provided. More preferably.
このような舶用燃料供給システムによれば、ガス圧縮機から送出されたボイルオフガスを冷却するのに必要とされたアフタークーラーを不要とすることができ、製造コストを低減させることができる。
According to such a marine fuel supply system, the aftercooler required for cooling the boil-off gas sent from the gas compressor can be eliminated, and the manufacturing cost can be reduced.
本発明の第3の態様に係る船舶は、上記いずれかの舶用燃料供給システムを具備している。
このような船舶によれば、貯蔵タンク内で発生したボイルオフガスは、ガス圧縮機の下流側に配置された少なくともガス燃焼装置ですべて消費され、余剰のボイルオフガスが、船外に放出されることがなくなるので、長距離航行が可能となる。 The ship which concerns on the 3rd aspect of this invention has comprised one of the said marine fuel supply systems.
According to such a ship, the boil-off gas generated in the storage tank is all consumed by at least the gas combustion device arranged on the downstream side of the gas compressor, and surplus boil-off gas is released to the outside of the ship. Because there is no longer, long-distance navigation is possible.
このような船舶によれば、貯蔵タンク内で発生したボイルオフガスは、ガス圧縮機の下流側に配置された少なくともガス燃焼装置ですべて消費され、余剰のボイルオフガスが、船外に放出されることがなくなるので、長距離航行が可能となる。 The ship which concerns on the 3rd aspect of this invention has comprised one of the said marine fuel supply systems.
According to such a ship, the boil-off gas generated in the storage tank is all consumed by at least the gas combustion device arranged on the downstream side of the gas compressor, and surplus boil-off gas is released to the outside of the ship. Because there is no longer, long-distance navigation is possible.
本発明によれば、長距離航行を可能にし、かつ、製造コストを低減させることができるという効果を奏する。
According to the present invention, there is an effect that long-distance navigation is possible and the manufacturing cost can be reduced.
〔第1実施形態〕
以下、本発明の第1実施形態に係る舶用燃料供給システム(舶用燃料供給装置)について、図1を参照しながら説明する。
図1は本実施形態に係る舶用燃料供給システムの概略構成図である。
図1に示すように、本実施形態に係る舶用燃料供給システム1は、例えば、重油と液化天然ガス(LNG)を焚くことができる(使用することができる)内燃機関(DFE:Dual Fuel EngineまたはGas Fuelled Engine )2およびボイラーや焼却炉等のガス燃焼装置(補機)3を搭載した船舶(オイルタンカーやコンテナ船、あるいは自動車運搬船等)に搭載される装置であって、LNG(貯蔵)タンク4と、LNG送給タンク5と、ベイパライザー(Vaporizer:蒸発器:気化器)6と、プレクーラー(Pre-Cooler)7と、(第1の:高圧)ガス圧縮機8と、アフタークーラー(After-Cooler)9と、ガスヒーター(Gas Heater)10と、第1の供給ライン11と、第2の供給ライン12と、第3の供給ライン13と、第4の供給ライン14と、第5の供給ライン15と、第6の供給ライン16と、第7の供給ライン17と、第8の供給ライン18とを備えている。 [First Embodiment]
Hereinafter, a marine fuel supply system (marine fuel supply apparatus) according to a first embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a schematic configuration diagram of a marine fuel supply system according to the present embodiment.
As shown in FIG. 1, the marinefuel supply system 1 according to the present embodiment can, for example, burn (or use) heavy oil and liquefied natural gas (LNG), an internal combustion engine (DFE: Dual Fuel Engine or An LNG (storage) tank installed in a ship (oil tanker, container ship, or car carrier) equipped with a gas fueled engine) 2 and a gas combustion device (auxiliary machine) 3 such as a boiler or an incinerator 4, an LNG feed tank 5, a vaporizer (vaporizer) 6, a pre-cooler (pre-cooler) 7, a (first: high pressure) gas compressor 8, and an after cooler (after -Cooler) 9, a gas heater 10, a first supply line 11, a second supply line 12, a third supply line 13, a fourth supply line 14, and a fifth A supply line 15; A sixth supply line 16, a seventh supply line 17, and an eighth supply line 18 are provided.
以下、本発明の第1実施形態に係る舶用燃料供給システム(舶用燃料供給装置)について、図1を参照しながら説明する。
図1は本実施形態に係る舶用燃料供給システムの概略構成図である。
図1に示すように、本実施形態に係る舶用燃料供給システム1は、例えば、重油と液化天然ガス(LNG)を焚くことができる(使用することができる)内燃機関(DFE:Dual Fuel EngineまたはGas Fuelled Engine )2およびボイラーや焼却炉等のガス燃焼装置(補機)3を搭載した船舶(オイルタンカーやコンテナ船、あるいは自動車運搬船等)に搭載される装置であって、LNG(貯蔵)タンク4と、LNG送給タンク5と、ベイパライザー(Vaporizer:蒸発器:気化器)6と、プレクーラー(Pre-Cooler)7と、(第1の:高圧)ガス圧縮機8と、アフタークーラー(After-Cooler)9と、ガスヒーター(Gas Heater)10と、第1の供給ライン11と、第2の供給ライン12と、第3の供給ライン13と、第4の供給ライン14と、第5の供給ライン15と、第6の供給ライン16と、第7の供給ライン17と、第8の供給ライン18とを備えている。 [First Embodiment]
Hereinafter, a marine fuel supply system (marine fuel supply apparatus) according to a first embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a schematic configuration diagram of a marine fuel supply system according to the present embodiment.
As shown in FIG. 1, the marine
内燃機関2は、重油のみを燃料とするモード(オイルモード)と、ガスを主燃料として重油をパイロット燃料とするモード(ガスモード)と切り換えて運転することができる内燃機関である。内燃機関2としては、プロペラ軸(図示せず)および推進用プロペラ(図示せず)を駆動(回転)させる推進用の機関(主機)や、発電機(図示せず)を駆動(回転)させる発電用の機関(補機)がある。
The internal combustion engine 2 is an internal combustion engine that can be operated by switching between a mode using only heavy oil (oil mode) and a mode using gas as main fuel and heavy oil as pilot fuel (gas mode). The internal combustion engine 2 drives (rotates) a propulsion engine (main machine) that drives (rotates) a propeller shaft (not shown) and a propeller for propulsion (not shown) or a generator (not shown). There is an engine (auxiliary machine) for power generation.
LNG貯蔵タンク4は、独立(自己支持型)のタンク(「独立タンク」ともいう。)であり、長距離航行を可能にするLNGを貯蔵する貯蔵容器である。また、LNG貯蔵タンク4は、重油を貯蔵する重油タンクと並んで船底部に配置されており、内圧は(略)大気圧に保たれている(維持されている)。
LNG貯蔵タンク4の周囲(外側)には、防熱構造(防熱材)21が設けられており、LNG貯蔵タンク4の周囲(外側)からLNG貯蔵タンク4内への入熱が極力(大幅に)低減されるようになっている。 TheLNG storage tank 4 is an independent (self-supporting) tank (also referred to as an “independent tank”), and is a storage container that stores LNG that enables long-distance navigation. Moreover, the LNG storage tank 4 is arrange | positioned at the ship bottom part along with the heavy oil tank which stores heavy oil, and the internal pressure is maintained at (substantially) atmospheric pressure (maintained).
A heat insulation structure (heat insulation material) 21 is provided around (outside) theLNG storage tank 4, and heat input from the circumference (outside) of the LNG storage tank 4 into the LNG storage tank 4 is as much as possible (substantially). It has been reduced.
LNG貯蔵タンク4の周囲(外側)には、防熱構造(防熱材)21が設けられており、LNG貯蔵タンク4の周囲(外側)からLNG貯蔵タンク4内への入熱が極力(大幅に)低減されるようになっている。 The
A heat insulation structure (heat insulation material) 21 is provided around (outside) the
第1の供給ライン11は、LNG貯蔵タンク4内に貯留されたLNGをLNG送給タンク5の液入口に導く液供給用配管(液管)であり、LNG貯蔵タンク4内に貯留されたLNGは、LNG貯蔵タンク4内に配置されたLNG移送ポンプ(LNG Feed Pump)22により送出(吐出)される。
The first supply line 11 is a liquid supply pipe (liquid pipe) that guides the LNG stored in the LNG storage tank 4 to the liquid inlet of the LNG supply tank 5, and the LNG stored in the LNG storage tank 4. Is delivered (discharged) by an LNG transfer pump (LNG Feed Pump) 22 disposed in the LNG storage tank 4.
LNG送給タンク5は、真空断熱された円筒状のタンク(「真空断熱タンク」ともいう。)または外張り断熱された円筒状のタンクであり、内燃機関2やガス燃焼装置3に供給される前のLNG(例えば、エンジン排ガス規制海域(ECA:Emission Control Area)内を一航海するのに必要なLNG)を一時的に貯蔵しておく小出し用の貯蔵容器である。また、LNG送給タンク5は、内部に貯留されたLNGを取り入れ(吸い込み)、蒸発(気化)させて、蒸発(気化)した天然ガスを再びLNG送給タンク5に戻し、LNG送給5内を所定の圧力(例えば、0.6MPa)まで昇圧(加圧)し、かつ、所定の圧力に維持する昇圧(加圧)用のベイパライザー(Vaporizer:蒸発器:気化器)23を備えている。ベイパライザー23においてLNGを蒸発(気化)させる加熱源としては、ボイラーで発生した蒸気や、この蒸気または機器の廃熱により温められた温水等が利用される。
The LNG supply tank 5 is a vacuum-insulated cylindrical tank (also referred to as “vacuum heat-insulating tank”) or an externally-insulated cylindrical tank, and is supplied to the internal combustion engine 2 and the gas combustion device 3. It is a storage container for dispensing that temporarily stores the previous LNG (for example, LNG necessary for one cruise in the engine emission control sea area (ECA: Emission Control Area)). The LNG supply tank 5 takes in (suctions) LNG stored therein, evaporates (vaporizes) it, and returns the evaporated (vaporized) natural gas to the LNG supply tank 5 again. Is increased (pressurized) to a predetermined pressure (for example, 0.6 MPa), and a pressure increase (pressurization) vaporizer (Vaporizer: vaporizer) 23 is provided. As a heating source for evaporating (vaporizing) LNG in the vaporizer 23, steam generated in a boiler, warm water warmed by the steam or waste heat of equipment, or the like is used.
第2の供給ライン12は、LNG送給タンク5内に貯留されたLNGをベイパライザー6の液入口に導く液供給用配管(液管)であり、LNG送給タンク5内に貯留されたLNGは、LNG送給タンク5内の内圧(蓄圧)により送出(吐出)される。
The second supply line 12 is a liquid supply pipe (liquid pipe) that guides LNG stored in the LNG supply tank 5 to the liquid inlet of the vaporizer 6, and the LNG stored in the LNG supply tank 5 is , It is sent out (discharged) by the internal pressure (accumulated pressure) in the LNG supply tank 5.
ベイパライザー6は、液入口から取り入れられたLNGを強制的に蒸発(気化)させて、天然ガスを所定の温度(例えば、-130℃)まで昇温する熱交換器であり、加熱源としては、ボイラーで発生した蒸気や、この蒸気または機器の廃熱により温められた温水等が利用される。
The vaporizer 6 is a heat exchanger that forcibly evaporates (vaporizes) LNG taken from the liquid inlet and raises the natural gas to a predetermined temperature (for example, −130 ° C.). Steam generated in the boiler, warm water heated by the steam or waste heat of the equipment, or the like is used.
第3の供給ライン13は、ベイパライザー6内でLNGを強制的に蒸発(気化)させて得られた天然ガスを、第7の供給ライン17の途中に導くガス供給用配管(ガス管)である。
The third supply line 13 is a gas supply pipe (gas pipe) that guides natural gas obtained by forcibly evaporating (vaporizing) LNG in the vaporizer 6 to the middle of the seventh supply line 17. .
第4の供給ライン14は、LNG貯蔵タンク4内で自然発生したボイルオフガスを、プレクーラー7のガス入口に導くガス供給用配管(ガス管)である。
The fourth supply line 14 is a gas supply pipe (gas pipe) that guides boil-off gas naturally generated in the LNG storage tank 4 to the gas inlet of the precooler 7.
プレクーラー7は、ガス入口から取り入れられたボイルオフガスを所定の温度(例えば、-100℃)まで冷却する熱交換器であり、冷却源としては、LNG貯蔵タンク4内に貯留されたLNG等が利用される。
The precooler 7 is a heat exchanger that cools the boil-off gas taken in from the gas inlet to a predetermined temperature (for example, −100 ° C.). As a cooling source, LNG or the like stored in the LNG storage tank 4 is used. Used.
第5の供給ライン15は、プレクーラー7内で冷却されたボイルオフガスを、ガス圧縮機8のガス吸込口に導くガス供給用配管(ガス管)である。
The fifth supply line 15 is a gas supply pipe (gas pipe) that guides the boil-off gas cooled in the precooler 7 to the gas suction port of the gas compressor 8.
ガス圧縮機8は、ガス吸入口から吸い込まれたボイルオフガスを所定の圧力(例えば、0.6MPa)まで昇圧(加圧)する高圧の圧縮機である。
The gas compressor 8 is a high-pressure compressor that pressurizes (pressurizes) the boil-off gas sucked from the gas inlet to a predetermined pressure (for example, 0.6 MPa).
第6の供給ライン16は、ガス圧縮機8で昇圧(加圧)されたボイルオフガスを、アフタークーラー9のガス入口に導くガス供給用配管(ガス管)である。
The sixth supply line 16 is a gas supply pipe (gas pipe) that guides the boil-off gas pressurized (pressurized) by the gas compressor 8 to the gas inlet of the aftercooler 9.
アフタークーラー9は、ガス圧縮機8で昇圧(加圧)されたボイルオフガスを、所定の温度(例えば、50℃以下)まで冷却する熱交換器であり、冷却源としては、LNG貯蔵タンク4内に貯留されたLNGや、このLNGにより冷やされた冷水、機関室冷却清水等が利用される。
The aftercooler 9 is a heat exchanger that cools the boil-off gas that has been pressurized (pressurized) by the gas compressor 8 to a predetermined temperature (for example, 50 ° C. or less), and the cooling source is the inside of the LNG storage tank 4. LNG, chilled water cooled by the LNG, engine room cooling fresh water, and the like are used.
第7の供給ライン17は、アフタークーラー9内で冷却されたボイルオフガス、および/または第3の供給ライン13を介して第7の供給ライン17の途中に導かれた天然ガスを、ガスヒーター10のガス入口に導くガス供給用配管(ガス管)である。
The seventh supply line 17 supplies the boil-off gas cooled in the aftercooler 9 and / or natural gas introduced into the seventh supply line 17 through the third supply line 13 to the gas heater 10. This is a gas supply pipe (gas pipe) leading to the gas inlet.
ガスヒーター10は、第8の供給ライン18に供給されるガス温度を0℃以上に保ち、内燃機関2に0℃以下の低温のガスが供給されないように加熱する際に使用される。その他、例えば、ガス圧縮機8を運転せずに、LNG貯蔵タンク4内の内圧のみでガス燃焼装置(ボイラーまたはガス焼却炉)3にボイルオフガスを供給する場合や、LNG貯蔵タンク4の温度を常温まで加熱する際等にも使用される。
The gas heater 10 is used when the temperature of the gas supplied to the eighth supply line 18 is kept at 0 ° C. or higher and the internal combustion engine 2 is heated so that a low-temperature gas of 0 ° C. or lower is not supplied. In addition, for example, when the gas compressor 8 is not operated and the boil-off gas is supplied to the gas combustion device (boiler or gas incinerator) 3 only with the internal pressure in the LNG storage tank 4, or the temperature of the LNG storage tank 4 is Also used when heating to room temperature.
第8の供給ライン18は、ガスヒーター10で温度調節されたガス(ボイルオフガスおよび/または天然ガス)を内燃機関2および/またはガス燃焼装置3のガス入口に導くガス供給用配管(ガス管)であり、第8の供給ライン18の途中には、内燃機関2およびガス燃焼装置3に供給されるガス量、ガス圧力を調整する流量制御弁(ガスバルブユニット)24が接続されている。
The eighth supply line 18 is a gas supply pipe (gas pipe) that guides the gas (boil-off gas and / or natural gas) whose temperature is adjusted by the gas heater 10 to the gas inlet of the internal combustion engine 2 and / or the gas combustion device 3. In the middle of the eighth supply line 18, a flow rate control valve (gas valve unit) 24 for adjusting the amount of gas supplied to the internal combustion engine 2 and the gas combustion device 3 and the gas pressure is connected.
本実施形態に係る舶用燃料供給システム1によれば、ボイルオフガスは、ガス圧縮機8の下流側に配置された内燃機関2およびガス燃焼装置3の少なくともいずれかですべて消費され、余剰のボイルオフガスが、船外に放出されることがなくなるので、長距離航行を可能なものとすることができる。
また、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込む構成とはなっていないので、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marinefuel supply system 1 according to the present embodiment, the boil-off gas is all consumed by at least one of the internal combustion engine 2 and the gas combustion device 3 arranged on the downstream side of the gas compressor 8, and surplus boil-off gas. However, since it is not released out of the ship, long-distance navigation can be achieved.
Further, since the boil-off gas generated in theLNG storage tank 4 is not pushed into the LNG supply tank 5, the high pressure for pushing the boil-off gas generated in the LNG storage tank 4 into the LNG supply tank 5 is not provided. A gas compressor (compressor unit) can be dispensed with, and the manufacturing cost can be reduced.
また、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込む構成とはなっていないので、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marine
Further, since the boil-off gas generated in the
さらに、本実施形態に係る舶用燃料供給システム1によれば、LNG送給タンク5内に貯留されたLNGは、LNG送給タンク5内の内圧(蓄圧)により送出(吐出)されることになるので、LNG送給タンク5内に貯留されたLNGを下流側に送出するポンプ等を不要とすることができ、構成の簡略化を図ることができ、構成要素のレイアウトの自由度を高めることができる。
Furthermore, according to the marine fuel supply system 1 according to the present embodiment, the LNG stored in the LNG supply tank 5 is sent out (discharged) by the internal pressure (accumulated pressure) in the LNG supply tank 5. Therefore, a pump or the like for sending LNG stored in the LNG supply tank 5 to the downstream side can be made unnecessary, the configuration can be simplified, and the degree of freedom in layout of the components can be increased. it can.
〔第2実施形態〕
本発明の第2実施形態に係る舶用燃料供給システムについて、図2を参照しながら説明する。
図2は本実施形態に係る舶用燃料供給システムの概略構成図である。
図2に示すように、本実施形態に係る舶用燃料供給システム31は、LNG貯蔵タンク4から内燃機関2に天然ガスを供給する第1の燃料供給系統32と、LNG貯蔵タンク4からガス燃焼装置3にボイルオフガスを供給する第2の燃料供給系統33とが、別個独立に設けられているという点で上述した第1実施形態のものと異なる。その他の構成要素については上述した第1実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第1実施形態と同一の部材には同一の符号を付している。 [Second Embodiment]
A marine fuel supply system according to a second embodiment of the present invention will be described with reference to FIG.
FIG. 2 is a schematic configuration diagram of the marine fuel supply system according to the present embodiment.
As shown in FIG. 2, the marinefuel supply system 31 according to the present embodiment includes a first fuel supply system 32 that supplies natural gas from the LNG storage tank 4 to the internal combustion engine 2, and a gas combustion device from the LNG storage tank 4. 3 differs from that of the first embodiment described above in that a second fuel supply system 33 that supplies boil-off gas to 3 is provided separately and independently. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.
本発明の第2実施形態に係る舶用燃料供給システムについて、図2を参照しながら説明する。
図2は本実施形態に係る舶用燃料供給システムの概略構成図である。
図2に示すように、本実施形態に係る舶用燃料供給システム31は、LNG貯蔵タンク4から内燃機関2に天然ガスを供給する第1の燃料供給系統32と、LNG貯蔵タンク4からガス燃焼装置3にボイルオフガスを供給する第2の燃料供給系統33とが、別個独立に設けられているという点で上述した第1実施形態のものと異なる。その他の構成要素については上述した第1実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第1実施形態と同一の部材には同一の符号を付している。 [Second Embodiment]
A marine fuel supply system according to a second embodiment of the present invention will be described with reference to FIG.
FIG. 2 is a schematic configuration diagram of the marine fuel supply system according to the present embodiment.
As shown in FIG. 2, the marine
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.
第1の燃料供給系統32は、第1の供給ライン11と、LNG送給タンク5と、第2の供給ライン12と、ベイパライザー6と、第9の供給ライン34と、ガスヒーター10と、第8の供給ライン18とを備え、これら第1の供給ライン11、LNG送給タンク5、第2の供給ライン12、ベイパライザー6、第9の供給ライン34、ガスヒーター10、および第8の供給ライン18が、LNG貯蔵タンク4の側(上流側)から順に配置されている。
The first fuel supply system 32 includes a first supply line 11, an LNG supply tank 5, a second supply line 12, a vaporizer 6, a ninth supply line 34, a gas heater 10, 8 supply lines 18, and these first supply line 11, LNG feed tank 5, second supply line 12, vaporizer 6, ninth supply line 34, gas heater 10, and eighth supply line 18 are arranged in order from the LNG storage tank 4 side (upstream side).
第9の供給ライン34は、ベイパライザー6内でLNGを強制的に蒸発(気化)させて得られた天然ガスを、ガスヒーター10のガス入口に導くガス供給用配管(ガス管)である。
The ninth supply line 34 is a gas supply pipe (gas pipe) for guiding natural gas obtained by forcibly evaporating (vaporizing) LNG in the vaporizer 6 to the gas inlet of the gas heater 10.
第2の燃料供給系統33は、第10の供給ライン35と、熱交換器36と、第11の供給ライン37と、(第2の:低圧)ガス圧縮機38と、第12の供給ライン39と、ガスヒーター10と、第8の供給ライン18とを備え、これら第10の供給ライン35、熱交換器36、第11の供給ライン37、ガス圧縮機38、第12の供給ライン39、ガスヒーター10、第8の供給ライン18が、LNG貯蔵タンク4の側(上流側)から順に配置されている。
The second fuel supply system 33 includes a tenth supply line 35, a heat exchanger 36, an eleventh supply line 37, a (second: low pressure) gas compressor 38, and a twelfth supply line 39. A gas heater 10 and an eighth supply line 18, and these tenth supply line 35, heat exchanger 36, eleventh supply line 37, gas compressor 38, twelfth supply line 39, gas The heater 10 and the eighth supply line 18 are arranged in order from the LNG storage tank 4 side (upstream side).
第10の供給ライン35は、LNG貯蔵タンク4内で自然発生したボイルオフガスを、熱交換器36のガス入口に導くガス供給用配管(ガス管)である。
The tenth supply line 35 is a gas supply pipe (gas pipe) that guides boil-off gas naturally generated in the LNG storage tank 4 to the gas inlet of the heat exchanger 36.
熱交換器36は、LNG貯蔵タンク4内で自然発生したボイルオフガスと、例えば、冷房熱交換器用冷媒管(チラー水配管等)40内を循環する冷却水等の冷媒(他の流体)とを熱交換させて、冷房熱交換器用冷媒管(チラー水配管等)40内を循環する冷却水等の冷媒(他の流体)を、所定の温度(例えば、-2℃)まで冷却する熱交換器である。
なお、図2中の符号41は、冷房熱交換器用冷媒管(チラー水配管等)40の途中に設けられ、冷房熱交換器用冷媒管(チラー水配管等)40内の冷却水等の冷媒(他の流体)を船内に供給するとともに、船内の冷却水等の冷媒(他の流体)を熱交換器36の側に吸引するポンプである。 Theheat exchanger 36 is a boil-off gas that is naturally generated in the LNG storage tank 4 and, for example, a refrigerant (other fluid) such as cooling water that circulates in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40. A heat exchanger that cools a refrigerant (other fluid) such as cooling water circulating in the refrigerant pipe (chiller water pipe or the like) 40 for cooling to a predetermined temperature (for example, −2 ° C.) by heat exchange. It is.
2 is provided in the middle of a cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40, and a refrigerant such as cooling water in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 ( It is a pump that supplies a refrigerant (other fluid) such as cooling water in the ship to theheat exchanger 36 side while supplying the other fluid) into the ship.
なお、図2中の符号41は、冷房熱交換器用冷媒管(チラー水配管等)40の途中に設けられ、冷房熱交換器用冷媒管(チラー水配管等)40内の冷却水等の冷媒(他の流体)を船内に供給するとともに、船内の冷却水等の冷媒(他の流体)を熱交換器36の側に吸引するポンプである。 The
2 is provided in the middle of a cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40, and a refrigerant such as cooling water in the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 ( It is a pump that supplies a refrigerant (other fluid) such as cooling water in the ship to the
第11の供給ライン37は、熱交換器36内で熱交換されたボイルオフガスを、ガス圧縮機38のガス吸込口に導くガス供給用配管(ガス管)である。
The eleventh supply line 37 is a gas supply pipe (gas pipe) that guides the boil-off gas heat-exchanged in the heat exchanger 36 to the gas suction port of the gas compressor 38.
ガス圧縮機38は、ガス吸入口から吸い込まれたボイルオフガスを所定の圧力(例えば、0.196MPaA)まで昇圧(加圧)する低圧の圧縮機である。
The gas compressor 38 is a low-pressure compressor that pressurizes (pressurizes) the boil-off gas sucked from the gas inlet to a predetermined pressure (for example, 0.196 MPaA).
第12の供給ライン39は、ガス圧縮機38で昇圧(加圧)されたボイルオフガスを、ガスヒーター10のガス入口に導くガス供給用配管(ガス管)である。
The twelfth supply line 39 is a gas supply pipe (gas pipe) that guides the boil-off gas pressurized (pressurized) by the gas compressor 38 to the gas inlet of the gas heater 10.
また、本実施形態では、流量制御弁24よりも上流側に位置して、第1の燃料供給系統32を構成する第8の供給ライン18の途中と、流量制御弁24よりも上流側に位置して、第2の燃料供給系統33を構成する第8の供給ライン18の途中とが、バイパス管42を介して連通され、バイパス管42の途中には、流量制御弁(ガスバルブユニット)43が接続されている
これにより、ボイルオフガスが不足する場合でも、流量制御弁43を開けることにより、ガス燃焼装置3への燃料供給が可能となる。 Further, in the present embodiment, it is located upstream from theflow control valve 24, and is located in the middle of the eighth supply line 18 constituting the first fuel supply system 32 and upstream from the flow control valve 24. Then, the middle of the eighth supply line 18 constituting the second fuel supply system 33 is communicated via the bypass pipe 42, and a flow rate control valve (gas valve unit) 43 is provided in the middle of the bypass pipe 42. As a result, even when the boil-off gas is insufficient, the fuel can be supplied to the gas combustion device 3 by opening the flow control valve 43.
これにより、ボイルオフガスが不足する場合でも、流量制御弁43を開けることにより、ガス燃焼装置3への燃料供給が可能となる。 Further, in the present embodiment, it is located upstream from the
本実施形態に係る舶用燃料供給システム31によれば、ボイルオフガスは、ガス圧縮機38の下流側に配置されたガス燃焼装置3ですべて消費され、余剰のボイルオフガスが、船外に放出されることがなくなるので、長距離航行を可能なものとすることができる。
また、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込む構成とはなっていないので、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marinefuel supply system 31 according to the present embodiment, all of the boil-off gas is consumed by the gas combustion device 3 disposed on the downstream side of the gas compressor 38, and surplus boil-off gas is released to the outside of the ship. So that long-distance navigation is possible.
Further, since the boil-off gas generated in theLNG storage tank 4 is not pushed into the LNG supply tank 5, the high pressure for pushing the boil-off gas generated in the LNG storage tank 4 into the LNG supply tank 5 is not provided. A gas compressor (compressor unit) can be dispensed with, and the manufacturing cost can be reduced.
また、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込む構成とはなっていないので、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marine
Further, since the boil-off gas generated in the
さらに、本実施形態に係る舶用燃料供給システム31によれば、LNG送給タンク5内に貯留されたLNGは、LNG送給タンク5内の内圧(蓄圧)により送出(吐出)されることになるので、LNG送給タンク5内に貯留されたLNGを下流側に送出するポンプ等を不要とすることができ、構成の簡略化を図ることができ、構成要素のレイアウトの自由度を高めることができる。
Furthermore, according to the marine fuel supply system 31 according to the present embodiment, the LNG stored in the LNG supply tank 5 is sent (discharged) by the internal pressure (accumulated pressure) in the LNG supply tank 5. Therefore, a pump or the like for sending LNG stored in the LNG supply tank 5 to the downstream side can be made unnecessary, the configuration can be simplified, and the degree of freedom in layout of the components can be increased. it can.
さらにまた、本実施形態に係る舶用燃料供給システム31によれば、LNG貯蔵タンク4内で自然発生したボイルオフガスと、例えば、図2に示す冷房熱交換器用冷媒管(チラー水配管等)40内を循環する冷却水等の冷媒(他の流体)とが熱交換されて、冷房熱交換器用冷媒管(チラー水配管等)40内を循環する冷却水等の冷媒(他の流体)が、所定の温度(例えば、-2℃)まで冷却されることになる。
これにより、ボイルオフガスの冷熱を有効利用することができて、船内に別途設けられた冷凍機等の負荷を低減させることができ、船舶のランニングコストを低減させることができる。 Furthermore, according to the marinefuel supply system 31 according to the present embodiment, the boil-off gas naturally generated in the LNG storage tank 4 and, for example, the cooling heat exchanger refrigerant pipe (chiller water pipe or the like) 40 shown in FIG. The refrigerant (other fluid) such as cooling water that circulates through the heat exchange, and the refrigerant (other fluid) such as cooling water that circulates in the refrigerant pipe (chiller water pipe) 40 for the cooling heat exchanger is predetermined. It is cooled to a temperature of (for example, −2 ° C.).
Thereby, the cold heat of boil-off gas can be used effectively, the load of the refrigerator etc. which were separately provided in the ship can be reduced, and the running cost of a ship can be reduced.
これにより、ボイルオフガスの冷熱を有効利用することができて、船内に別途設けられた冷凍機等の負荷を低減させることができ、船舶のランニングコストを低減させることができる。 Furthermore, according to the marine
Thereby, the cold heat of boil-off gas can be used effectively, the load of the refrigerator etc. which were separately provided in the ship can be reduced, and the running cost of a ship can be reduced.
さらにまた、本実施形態に係る舶用燃料供給システム31によれば、ガス圧縮機38で昇圧(加圧)されたボイルオフガスは、ガス燃焼装置3のみで使用されることになるので、ガス圧縮機38として、低圧仕様のものを採用することができ、製造コストを低減させることができる。
Furthermore, according to the marine fuel supply system 31 according to the present embodiment, the boil-off gas whose pressure has been increased (pressurized) by the gas compressor 38 is used only by the gas combustion device 3. As 38, a low-pressure specification can be adopted, and the manufacturing cost can be reduced.
さらにまた、本実施形態に係る舶用燃料供給システム31によれば、ボイルオフガス自体が所定の圧力(例えば、0.17MPa)を有している場合には、ガス圧縮機38を停止させることができ、船内で使用される(電気)エネルギーを低減させることができて、船舶のランニングコストを低減させることができる。
Furthermore, according to the marine fuel supply system 31 according to the present embodiment, the gas compressor 38 can be stopped when the boil-off gas itself has a predetermined pressure (for example, 0.17 MPa). The (electric) energy used in the ship can be reduced, and the running cost of the ship can be reduced.
〔第3実施形態〕
本発明の第3実施形態に係る舶用燃料供給システムについて、図3を参照しながら説明する。
図3は本実施形態に係る舶用燃料供給システムの概略構成図である。
図3に示すように、本実施形態に係る舶用燃料供給システム51は、第3の供給ライン13の途中に、温度調節器52が設けられているという点で上述した第1実施形態のものと異なる。その他の構成要素については上述した第1実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第1実施形態と同一の部材には同一の符号を付している。 [Third Embodiment]
A marine fuel supply system according to a third embodiment of the present invention will be described with reference to FIG.
FIG. 3 is a schematic configuration diagram of the marine fuel supply system according to the present embodiment.
As shown in FIG. 3, the marinefuel supply system 51 according to the present embodiment is the same as that of the first embodiment described above in that a temperature controller 52 is provided in the middle of the third supply line 13. Different. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.
本発明の第3実施形態に係る舶用燃料供給システムについて、図3を参照しながら説明する。
図3は本実施形態に係る舶用燃料供給システムの概略構成図である。
図3に示すように、本実施形態に係る舶用燃料供給システム51は、第3の供給ライン13の途中に、温度調節器52が設けられているという点で上述した第1実施形態のものと異なる。その他の構成要素については上述した第1実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第1実施形態と同一の部材には同一の符号を付している。 [Third Embodiment]
A marine fuel supply system according to a third embodiment of the present invention will be described with reference to FIG.
FIG. 3 is a schematic configuration diagram of the marine fuel supply system according to the present embodiment.
As shown in FIG. 3, the marine
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.
温度調節器52は、第13の供給管53を介して導かれたLNGを、内部に配置されたスプレーノズル(図示せず)から噴出させて、第7の供給ライン17に流入する(流れ込む)天然ガスの温度を冷却する気液接触式の熱交換器である。
The temperature controller 52 ejects LNG guided through the thirteenth supply pipe 53 from a spray nozzle (not shown) disposed therein and flows (flows) into the seventh supply line 17. It is a gas-liquid contact heat exchanger that cools the temperature of natural gas.
第13の供給管53は、第2の供給管12内を通過するLNGの一部を温度調節器52のスプレーノズルに導く液供給用配管(液管)である。
The thirteenth supply pipe 53 is a liquid supply pipe (liquid pipe) that guides a part of the LNG passing through the second supply pipe 12 to the spray nozzle of the temperature controller 52.
本実施形態に係る舶用燃料供給システム51によれば、ボイルオフガスは、ガス圧縮機8の下流側に配置された内燃機関2およびガス燃焼装置3の少なくともいずれかですべて消費され、余剰のボイルオフガスが、船外に放出されることがなくなるので、長距離航行を可能なものとすることができる。
また、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込む構成とはなっていないので、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marinefuel supply system 51 according to the present embodiment, the boil-off gas is all consumed by at least one of the internal combustion engine 2 and the gas combustion device 3 arranged on the downstream side of the gas compressor 8, and surplus boil-off gas. However, since it is not released out of the ship, long-distance navigation can be achieved.
Further, since the boil-off gas generated in theLNG storage tank 4 is not pushed into the LNG supply tank 5, the high pressure for pushing the boil-off gas generated in the LNG storage tank 4 into the LNG supply tank 5 is not provided. A gas compressor (compressor unit) can be dispensed with, and the manufacturing cost can be reduced.
また、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込む構成とはなっていないので、LNG貯蔵タンク4で発生したボイルオフガスをLNG送給タンク5内に押し込むための高圧のガス圧縮機(コンプレッサユニット)を不要とすることができ、製造コストを低減させることができる。 According to the marine
Further, since the boil-off gas generated in the
さらに、本実施形態に係る舶用燃料供給システム51によれば、LNG送給タンク5内に貯留されたLNGは、LNG送給タンク5内の内圧(蓄圧)により送出(吐出)されることになるので、LNG送給タンク5内に貯留されたLNGを下流側に送出するポンプ等を不要とすることができ、構成の簡略化を図ることができ、構成要素のレイアウトの自由度を高めることができる。
Furthermore, according to the marine fuel supply system 51 according to the present embodiment, the LNG stored in the LNG supply tank 5 is sent out (discharged) by the internal pressure (accumulated pressure) in the LNG supply tank 5. Therefore, a pump or the like for sending LNG stored in the LNG supply tank 5 to the downstream side can be made unnecessary, the configuration can be simplified, and the degree of freedom in layout of the components can be increased. it can.
さらにまた、本実施形態に係る舶用燃料供給システム51によれば、ガス圧縮機8から送出されたボイルオフガスを冷却するのに必要とされたアフタークーラー9を不要とすることができ、製造コストを低減させることができる。
Furthermore, according to the marine fuel supply system 51 according to the present embodiment, the aftercooler 9 required for cooling the boil-off gas sent from the gas compressor 8 can be eliminated, and the manufacturing cost can be reduced. Can be reduced.
なお、本発明は上述した実施形態に限定されるものではなく、適宜必要に応じて変形・変更実施可能である。
It should be noted that the present invention is not limited to the above-described embodiment, and can be modified and changed as necessary.
1 舶用燃料供給システム
2 内燃機関
3 ガス燃焼装置
4 LNG貯蔵タンク(独立タンク)
5 LNG送給タンク(送給タンク)
6 ベイパライザー(蒸発器)
8 ガス圧縮機
23 昇圧用のベイパライザー(蒸発器)
31 舶用燃料供給システム
32 第1の燃料供給系統
33 第2の燃料供給系統
36 熱交換器
38 ガス圧縮機
51 舶用燃料供給システム
52 温度調節器 DESCRIPTION OFSYMBOLS 1 Marine fuel supply system 2 Internal combustion engine 3 Gas combustion apparatus 4 LNG storage tank (independent tank)
5 LNG feed tank (feed tank)
6 Vaporizer (evaporator)
8Gas compressor 23 Vaporizer (evaporator) for pressurization
31 MarineFuel Supply System 32 First Fuel Supply System 33 Second Fuel Supply System 36 Heat Exchanger 38 Gas Compressor 51 Marine Fuel Supply System 52 Temperature Controller
2 内燃機関
3 ガス燃焼装置
4 LNG貯蔵タンク(独立タンク)
5 LNG送給タンク(送給タンク)
6 ベイパライザー(蒸発器)
8 ガス圧縮機
23 昇圧用のベイパライザー(蒸発器)
31 舶用燃料供給システム
32 第1の燃料供給系統
33 第2の燃料供給系統
36 熱交換器
38 ガス圧縮機
51 舶用燃料供給システム
52 温度調節器 DESCRIPTION OF
5 LNG feed tank (feed tank)
6 Vaporizer (evaporator)
8
31 Marine
Claims (6)
- 液化天然ガスを貯蔵するとともに、内圧が略大気圧に維持された独立タンクと、
前記独立タンクから送出された前記液化天然ガスを一時的に貯蔵しておく送給タンクと、
前記独立タンクから導かれたボイルオフガスを圧縮して、下流側に配置された内燃機関およびガス燃焼装置の少なくともいずれかに、前記ボイルオフガスを供給するガス圧縮機と、を備えている舶用燃料供給システム。 An independent tank that stores liquefied natural gas and whose internal pressure is maintained at approximately atmospheric pressure,
A feed tank for temporarily storing the liquefied natural gas delivered from the independent tank;
A marine fuel supply comprising: a gas compressor that compresses the boil-off gas introduced from the independent tank and supplies the boil-off gas to at least one of an internal combustion engine and a gas combustion device disposed on the downstream side system. - 液化天然ガスを貯蔵するとともに、内圧が略大気圧に維持された独立タンクと、
前記独立タンクから送出された前記液化天然ガスを一時的に貯蔵しておく送給タンクと、
前記独立タンクから導かれたボイルオフガスを圧縮して、下流側に配置されたガス燃焼装置に前記ボイルオフガスを供給するガス圧縮機と、
前記送給タンクから送出された液化天然ガスを蒸発させて、下流側に配置された内燃機関に導く第1の燃料供給系統と、
前記ガス圧縮機から送出されたボイルオフガスを、下流側に配置されたガス燃焼装置に導く第2の燃料供給系統と、を備えている舶用燃料供給システム。 An independent tank that stores liquefied natural gas and whose internal pressure is maintained at approximately atmospheric pressure,
A feed tank for temporarily storing the liquefied natural gas delivered from the independent tank;
A gas compressor that compresses the boil-off gas introduced from the independent tank and supplies the boil-off gas to a gas combustion device disposed downstream;
A first fuel supply system that evaporates the liquefied natural gas sent from the feed tank and leads it to an internal combustion engine disposed downstream;
A marine fuel supply system comprising: a second fuel supply system that guides boil-off gas delivered from the gas compressor to a gas combustion device disposed downstream. - 前記送給タンクの内部に貯留された液化天然ガスを取り入れ、蒸発させて、蒸発した天然ガスを再び前記送給タンクに戻し、前記送給タンクの内圧を所定の圧力まで昇圧する昇圧用の蒸発器が設けられている請求項1または2に記載の舶用燃料供給システム。 Evaporation for boosting that takes in and evaporates the liquefied natural gas stored in the inside of the supply tank, returns the evaporated natural gas to the supply tank again, and increases the internal pressure of the supply tank to a predetermined pressure. The marine fuel supply system according to claim 1 or 2, wherein a vessel is provided.
- 前記独立タンクと、前記ガス圧縮機との間に位置する前記第2の燃料供給系統の途中に、前記ボイルオフガスと熱交換させて前記ボイルオフガスの冷熱で他の流体を冷却する熱交換器が設けられている請求項2に記載の舶用燃料供給システム。 In the middle of the second fuel supply system located between the independent tank and the gas compressor, a heat exchanger that heat-exchanges with the boil-off gas and cools other fluids with the cold heat of the boil-off gas. The marine fuel supply system according to claim 2 provided.
- 前記送給タンクから送出された液化天然ガスを蒸発させる蒸発器と、この蒸発器から導かれた天然ガスを冷却する温度調節器とが設けられている請求項1に記載の舶用燃料供給システム。 The marine fuel supply system according to claim 1, wherein an evaporator for evaporating the liquefied natural gas sent from the supply tank and a temperature controller for cooling the natural gas led from the evaporator are provided.
- 請求項1から5のいずれか一項に記載の舶用燃料供給システムを装備している船舶。 A ship equipped with the marine fuel supply system according to any one of claims 1 to 5.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-222508 | 2010-09-30 | ||
JP2010222508A JP2012076561A (en) | 2010-09-30 | 2010-09-30 | Fuel supply system for ship |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012043259A1 true WO2012043259A1 (en) | 2012-04-05 |
Family
ID=45892726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/071125 WO2012043259A1 (en) | 2010-09-30 | 2011-09-15 | Fuel supply system for ship |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2012076561A (en) |
WO (1) | WO2012043259A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104838126A (en) * | 2012-12-14 | 2015-08-12 | 川崎重工业株式会社 | Gas engine driving system and ship |
CN110939531A (en) * | 2018-09-21 | 2020-03-31 | 罗伯特·博世有限公司 | Fuel delivery device for internal combustion engine |
CN110939532A (en) * | 2018-09-21 | 2020-03-31 | 罗伯特·博世有限公司 | Fuel delivery device for internal combustion engine |
CN111287866A (en) * | 2018-12-10 | 2020-06-16 | 罗伯特·博世有限公司 | Fuel delivery device for internal combustion engine |
CN113090417A (en) * | 2021-03-29 | 2021-07-09 | 招商局重工(深圳)有限公司 | LPG gas-liquid separation jar and fuel control system |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101386543B1 (en) * | 2012-10-24 | 2014-04-18 | 대우조선해양 주식회사 | System for treating boil-off gas for a ship |
JP6037846B2 (en) * | 2013-01-23 | 2016-12-07 | 三菱重工業株式会社 | Gas removal equipment, gas removal ship, gas removal method from tank |
KR101640765B1 (en) | 2013-06-26 | 2016-07-19 | 대우조선해양 주식회사 | System and method for treating boil-off gas for a ship |
JP6262076B2 (en) * | 2014-05-23 | 2018-01-17 | 三井造船株式会社 | Ships powered by methanol |
JP6423652B2 (en) * | 2014-08-29 | 2018-11-14 | 川崎重工業株式会社 | Ship |
JP2016124386A (en) * | 2014-12-26 | 2016-07-11 | 川崎重工業株式会社 | Liquefied gas carrying vessel |
CN108137145A (en) * | 2015-10-16 | 2018-06-08 | 科莱斯达公司 | It is that the purpose at least supplying engine is used for the method and apparatus for handling boil-off gas |
JP6600247B2 (en) * | 2015-11-06 | 2019-10-30 | 川崎重工業株式会社 | Ship |
WO2017077719A1 (en) * | 2015-11-06 | 2017-05-11 | 川崎重工業株式会社 | Ship |
WO2017078155A1 (en) * | 2015-11-06 | 2017-05-11 | 川崎重工業株式会社 | Ship |
JP6600248B2 (en) * | 2015-12-18 | 2019-10-30 | 川崎重工業株式会社 | Ship |
JP6239027B2 (en) * | 2016-04-25 | 2017-11-29 | 三井造船株式会社 | Fuel gas supply system for liquefied gas carrier |
JP7078204B2 (en) * | 2017-05-10 | 2022-05-31 | 三井E&S造船株式会社 | Liquefied gas fuel ship |
JP2018135091A (en) * | 2018-04-05 | 2018-08-30 | 三井E&S造船株式会社 | Fuel gas supply system for liquefied gas carrier |
JP7036702B2 (en) * | 2018-10-30 | 2022-03-15 | 株式会社神戸製鋼所 | Compressor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5957094A (en) * | 1982-09-27 | 1984-04-02 | Hitachi Zosen Corp | Utilizing method of boil-off gas in lng carrying ship |
JP2005186815A (en) * | 2003-12-25 | 2005-07-14 | Mitsubishi Heavy Ind Ltd | Fuel feed device to gas burning internal combustion engine such as gas turbine and lng vessel provided with this |
JP2006168719A (en) * | 2004-12-10 | 2006-06-29 | Alstom | Gaseous fuel feeder to energy generating unit for vessel for liquefied gas transportation |
JP2009541140A (en) * | 2006-06-27 | 2009-11-26 | ワルトシラ フィンランド オサケユキチュア | Gas powered marine fuel system |
-
2010
- 2010-09-30 JP JP2010222508A patent/JP2012076561A/en not_active Withdrawn
-
2011
- 2011-09-15 WO PCT/JP2011/071125 patent/WO2012043259A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5957094A (en) * | 1982-09-27 | 1984-04-02 | Hitachi Zosen Corp | Utilizing method of boil-off gas in lng carrying ship |
JP2005186815A (en) * | 2003-12-25 | 2005-07-14 | Mitsubishi Heavy Ind Ltd | Fuel feed device to gas burning internal combustion engine such as gas turbine and lng vessel provided with this |
JP2006168719A (en) * | 2004-12-10 | 2006-06-29 | Alstom | Gaseous fuel feeder to energy generating unit for vessel for liquefied gas transportation |
JP2009541140A (en) * | 2006-06-27 | 2009-11-26 | ワルトシラ フィンランド オサケユキチュア | Gas powered marine fuel system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104838126A (en) * | 2012-12-14 | 2015-08-12 | 川崎重工业株式会社 | Gas engine driving system and ship |
CN110939531A (en) * | 2018-09-21 | 2020-03-31 | 罗伯特·博世有限公司 | Fuel delivery device for internal combustion engine |
CN110939532A (en) * | 2018-09-21 | 2020-03-31 | 罗伯特·博世有限公司 | Fuel delivery device for internal combustion engine |
CN111287866A (en) * | 2018-12-10 | 2020-06-16 | 罗伯特·博世有限公司 | Fuel delivery device for internal combustion engine |
CN113090417A (en) * | 2021-03-29 | 2021-07-09 | 招商局重工(深圳)有限公司 | LPG gas-liquid separation jar and fuel control system |
Also Published As
Publication number | Publication date |
---|---|
JP2012076561A (en) | 2012-04-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2012043259A1 (en) | Fuel supply system for ship | |
KR101076266B1 (en) | System for supplying fuel gas in lng carrier | |
KR101927585B1 (en) | A Vessel having a regasification System of gas | |
EP2939918B1 (en) | Natural gas fuel evaporator, natural gas fuel supply device, and method for supplying natural gas fuel to ships and motors | |
KR102082362B1 (en) | Apparatus, system and method for the capture, utilization and sendout of latent heat in boil off gas onboard a cryogenic storage vessel | |
CN101952635A (en) | Natural gas supply method and apparatus | |
KR20030017423A (en) | Natural gas supply apparatus | |
CN104214507A (en) | Liquefied gas treatment system | |
KR102384294B1 (en) | A Gas Regasification System and Vessel having the same | |
WO2015098092A1 (en) | Liquefied fuel gas evaporation promoting device and fuel gas supply system for ships | |
KR101903849B1 (en) | A Regasification System Of Gas and Vessel having same | |
KR20180060214A (en) | A Regasification System Of Gas and Vessel having same | |
KR101441244B1 (en) | A Treatment System of Liquefied Natural Gas | |
KR20180033734A (en) | Gas Treatment System and Vessel having same | |
KR20190012027A (en) | A Regasification System Of Gas and Vessel having the same | |
KR20160068179A (en) | Reliquefaction system | |
KR20150062382A (en) | System for supplying fuel gas in ships | |
KR102176541B1 (en) | Vent master unit and lng carrier having the same | |
KR101563856B1 (en) | System for supplying fuel gas in ships | |
KR20170078017A (en) | A Treatment System of Gas for Vessel | |
KR20160103210A (en) | A Treatment System and Method of Liquefied Gas | |
KR101903763B1 (en) | System for supplying fuel gas in ships | |
KR20150076484A (en) | System for supplying fuel gas in ships | |
KR20150089473A (en) | Propulsion system of ship | |
KR20240003382A (en) | Gas treatment system and ship having the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11828819 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11828819 Country of ref document: EP Kind code of ref document: A1 |