WO2020251104A1 - Système capable d'alimentation en carburant, de remplacement d'eau de ballast et d'alimentation en eau propre à l'aide d'hydrate de gaz naturel dans un navire à eau de ballast minimale - Google Patents

Système capable d'alimentation en carburant, de remplacement d'eau de ballast et d'alimentation en eau propre à l'aide d'hydrate de gaz naturel dans un navire à eau de ballast minimale Download PDF

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Publication number
WO2020251104A1
WO2020251104A1 PCT/KR2019/007273 KR2019007273W WO2020251104A1 WO 2020251104 A1 WO2020251104 A1 WO 2020251104A1 KR 2019007273 W KR2019007273 W KR 2019007273W WO 2020251104 A1 WO2020251104 A1 WO 2020251104A1
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Prior art keywords
natural gas
ballast water
gas hydrate
fuel
ship
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Application number
PCT/KR2019/007273
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English (en)
Korean (ko)
Inventor
강희진
최진
Original Assignee
한국해양과학기술원
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Application filed by 한국해양과학기술원 filed Critical 한국해양과학기술원
Priority to JP2021551821A priority Critical patent/JP7248813B2/ja
Priority to CN201980093892.5A priority patent/CN113557197A/zh
Publication of WO2020251104A1 publication Critical patent/WO2020251104A1/fr

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    • 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
    • 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
    • B63B25/04—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods solid
    • 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
    • B63B25/14—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed pressurised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0665—Tanks, e.g. multiple tanks
    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0673—Valves; Pressure or flow regulators; Mixers
    • F02D19/0678—Pressure or flow regulators therefor; Fuel metering valves therefor
    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
    • 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
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239—Pressure or flow regulators therefor
    • 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

Definitions

  • the present invention relates to a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate. More specifically, after extracting natural gas from natural gas hydrate, it is a minimum ballast water linear vessel.
  • the present invention relates to a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship with minimum ballast water using natural gas hydrate that can be used as fuel for a dual-fuel engine.
  • the present invention relates to a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can rectify and recycle fresh water remaining after natural gas extraction.
  • the present invention provides a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship with minimum ballast water by using natural gas hydrate that can reduce green house gas through mixed combustion of natural gas and hydrogen. About.
  • the energy storage efficiency of natural gas hydrate is less than one-third of that of liquefied natural gas, and has three times more storage space and weight. For this reason, it is recognized that using natural gas hydrate as fuel for a ship requires a fuel tank with a relatively large volume, which is not acceptable in the ship design procedure.
  • ballast water for stable operation in empty cargo conditions.
  • the role of ballast water is to maintain stability of the ship, trim and heel control, secure immersion depth of the propeller, and proper draft. Reduction of slamming through securing, Reduction of bending moment of the ship, and Relieve the shear force of the ships.
  • ballast water used in ships varies by ship type, it is generally about 30% to 40% of DWT (dead weight), and passenger ships are known to additionally operate about 10% of ballast water compared to cargo ships such as container ships and bulk carriers. have.
  • Ballast Water Management Due to the destruction of the marine environment due to the long-distance movement of marine microorganisms contained in ballast water, the measures of the Ballast Water Management (BWM) Convention came into effect in September 2017, and all ships' ballast water is microbes before discharge. As a process of killing and confirming is required, problems such as installation of a ballast water treatment device, an increase in operating costs, and an increase in anchoring period due to the inspection of ballast water at the port are emerging.
  • BWM Ballast Water Management
  • ballast water and minimum ballast water ships For the realization and commercialization of ballast water and minimum ballast water ships, (1) maintenance of attitude control capability required for ship operation without using ballast water, and (2) securing proper propeller immersion depth , (3) Securing resistance propulsion performance of proper water, (4) Securing countermeasures against bow slamming during flight, (5) Securing countermeasures against loads borne by the hull during flight, (6) Securing operability in existing ports (7) Securing easy technical realization and (8) Securing life cycle economics are indispensable.
  • the present invention was derived to solve the above-described problem, and after extracting natural gas from natural gas hydrate, it is possible to use natural gas hydrate that can be utilized as a fuel for a dual fuel engine of a minimum ballast water vessel. It is intended to provide a system capable of supplying fuel, replacing ballast water and supplying fresh water.
  • the present invention is to provide a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can be recycled at a port of call by rectifying fresh water remaining after natural gas extraction.
  • the present invention provides a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that can reduce green house gas through mixed combustion of natural gas and hydrogen. I want to.
  • the present invention is based on replacing the required ballast water using the large weight and volume of natural gas hydrate instead of LNG and ship fuel oil (HFO) by utilizing the hull-form of the minimum ballast water vessel. It is intended to provide a system capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water by using natural gas hydrate that enables water navigation.
  • HFO LNG and ship fuel oil
  • the natural gas hydrate tank container can be loaded on a ship in the form of a fixed or tank container, and in the case of a ship that transports natural gas hydrate, natural gas that can load natural gas hydrate without separate LNG or HFO bunkering work. It is intended to provide a system capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using hydrate.
  • the present invention uses a dual fuel engine to maximize the cargo load by utilizing existing LNG and HFO as ship fuel in the case of a full operation without ballast water. It is intended to provide a system capable of supplying fuel, replacing ballast water and supplying fresh water.
  • the present invention is to provide a system in which natural gas hydrate and hydrogen are loaded in a tank container and mounted on a ship, and then natural gas and hydrogen are extracted and mixed from the loaded tank container and supplied as fuel for the ship.
  • one or more natural gas hydrate tank containers connected to the fuel supply system of the minimum ballast water vessel Stacked natural gas hydrate tank container stack, a natural gas regulator that maintains a constant pressure of natural gas extracted from the natural gas hydrate tank container stack, and the natural gas to prevent pipe damage or clogging during extraction of the natural gas
  • a heat exchanger for controlling the temperature of, a fuel flow meter connected to the heat exchanger and measuring a flow rate of natural gas discharged through the heat exchanger, a fuel supply pipe and the fuel supply pipe connected to the fuel intake part of the engine in the minimum ballast water vessel It may include a fuel flow control valve for controlling a mixing ratio between the air sucked through and the natural gas sucked through the heat exchanger.
  • the natural gas hydrate tank container stack uses the heat of exhaust gas or coolant discharged from the engine to adjust the phase equilibrium state of the natural gas hydrate in a solid state. It may be characterized by regasifying.
  • the natural gas regulator may be characterized in that a constant natural gas supply pressure is maintained by collecting pressures of natural gas discharged from each of the one or more natural gas hydrate tank containers.
  • the present invention may further include a natural gas control valve positioned between the natural gas regulator and the heat exchanger and controlling a state of discharge of natural gas discharged from the natural gas regulator.
  • the heat exchanger may be characterized in that it performs heat exchange to prevent damage or clogging of a pipe during extraction of natural gas discharged through the natural gas control valve.
  • the fuel supply pipe may include a throttle body, and an amount of air sucked through the throttle body may be transmitted to the fuel flow control valve.
  • the throttle body may include a throttle valve that adjusts an amount of air sucked through the fuel supply pipe.
  • the natural gas hydrate tank container stack is provided to change the arrangement state on the ship according to the weight distribution of one or more containers loaded on the minimum ballast water vessel, instead of the ballast water of the minimum ballast water vessel It may be characterized in that the vertical and horizontal slope of the minimum ballast water vessel is adjusted by the natural gas hydrate tank container stack, and an appropriate draft is secured.
  • an emergency shut-off valve for preventing explosion of the natural gas hydrate tank container between the natural gas hydrate tank container stack and the fuel supply pipe, an emergency shut-off valve for preventing explosion of the natural gas hydrate tank container, a flashback pressure valve, and an explosion preventer It may be characterized in that any one or more of (Detonation Arrester) is provided.
  • the system capable of supplying fuel, replacing ballast water, and supplying fresh water in a ship using natural gas hydrate includes at least one natural gas hydrate tank container and at least one hydrogen connected to the fuel supply system of the ship.
  • a natural gas hydrate tank container stack in which tanks are stacked, a natural gas regulator controlling the pressure of natural gas discharged from the natural gas hydrate tank container stack, a hydrogen regulator controlling the pressure of hydrogen discharged from the hydrogen tank, the natural gas
  • a heat exchanger controlling the temperature of natural gas discharged through a control valve, a fuel flow meter connected to the heat exchanger and measuring the flow rate of natural gas discharged through the heat exchanger, and connected to the hydrogen regulator, and discharged from the hydrogen regulator
  • a hydrogen flow meter that measures the flow rate of hydrogen, a fuel supply pipe connected to the fuel intake part of the engine in the ship, and a fuel flow control valve that controls a mixing ratio between the air sucked through the fuel supply pipe and the natural gas discharged through the heat exchanger.
  • the fresh water remaining after the natural gas extraction in the natural gas hydrate tank container stack is applied by replacing it with the ballast water of the minimum ballast water vessel, and supplying the fresh water so that the fresh water can be collected and recycled at the port of call. It can be characterized.
  • the present invention has the advantage of being able to recycle by collecting and treating fresh water remaining after natural gas extraction at a port of call.
  • the present invention has the advantage of being able to reduce green house gas through mixed firing of natural gas and hydrogen.
  • ballast water required by utilizing the hull-form of the minimum ballast water vessel is replaced by using a large weight and volume of natural gas hydrate instead of LNG and ship fuel oil (HFO). It has the advantage of making it possible to operate in ballast water.
  • the natural gas hydrate tank container can be loaded on a ship in a fixed or tank container form, and in the case of a ship that transports natural gas hydrate, a natural gas hydrate is loaded without separate LNG or HFO bunkering work. It has the advantage of supplying fuel to ships only by doing so.
  • the vertical and horizontal equilibrium of the vessel It has the advantage of being able to play a role in matching.
  • FIG. 1 is a view showing the configuration of a system 100 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing the configuration of a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to another embodiment of the present invention.
  • FIG. 3 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are disposed together with a plurality of containers in a ship to which the minimum ballast water is applied.
  • FIG. 4 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are arranged to adjust the heel and trim of the ship to which the minimum ballast water alignment is applied to be.
  • FIG. 5 is a view showing a process of rectifying the fresh water in the natural gas hydrate tank container stacks 110 and 210 shown in FIG.
  • FIG. 6 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 1 It is a flow chart showing the order of.
  • FIG. 7 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 200 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 2 It is a flow chart showing the order of.
  • FIG. 1 is a view showing the configuration of a system 100 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to an embodiment of the present invention.
  • a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate according to an embodiment of the present invention is largely a natural gas hydrate tank container stack 110 , A natural gas regulator 120, a natural gas control valve 130, a heat exchanger 140, a fuel flow meter 150, and a fuel flow control valve 160.
  • the natural gas hydrate tank container stack 110 refers to a natural gas hydrate tank container in which one or more natural gas hydrate tank containers are stacked. At this time, since the natural gas hydrate in each natural gas hydrate tank container 110a is in an ice-like solid state, the heat of exhaust gas or coolant discharged from the engine 300 of the ship is used, or Under reduced pressure, natural gas is extracted from solid natural gas hydrate.
  • the extracted natural gas is supplied to the natural gas regulator 120 through a pipe.
  • the natural gas regulator 120 maintains a constant pressure of natural gas discharged from each natural gas hydrate tank container 110a.
  • the natural gas whose discharge pressure is constant by the natural gas regulator 120 is delivered to the heat exchanger 140 through the natural gas control valve 130.
  • the natural gas control valve 130 is located between the natural gas regulator 120 and the heat exchanger 140 and serves to adjust the state of the natural gas discharged from the natural gas regulator 120.
  • the heat exchanger 140 controls the temperature of natural gas discharged through the natural gas control valve 130.
  • the discharge pipe may become hydrated and cause pipe blockage, so that the heat exchanger 140 is discharged by the natural gas discharged through the natural gas control valve 130. It plays a role in preventing it from being damaged or blocked.
  • the mixing ratio of air and natural gas is constantly adjusted through the fuel flow control valve 160.
  • the fuel flow control valve 160 is such that the mixing ratio between the air sucked through the fuel supply pipe 310 connected to the fuel intake of the engine 300 and the natural gas discharged through the heat exchanger 140 is kept constant. And also check the flow rate.
  • the engine 300 may mean a dual fuel engine.
  • the fuel supply pipe 310 includes a throttle body 320, and an amount of air sucked into the fuel supply pipe 310 through a throttle valve included in the throttle body 320 may be adjusted.
  • the amount of air inhaled through the throttle valve may be applied to the fuel flow control valve 160 to control the exact mixing ratio of air and natural gas while being transmitted to the fuel flow control valve 160.
  • the natural gas hydrate tank container stack 110 has a considerable weight by fresh water (fresh water) occupying 80% of the volume, and in the present invention, the natural gas hydrate tank container stack 110 is loaded on the ship.
  • fresh water fresh water
  • the weight of one or more containers it is possible to control the longitudinal and transverse attitude of the ship in place of the ballast water of the ship. This will be described later with reference to FIGS. 3 and 4.
  • an emergency shutoff valve Quick Closing Valve
  • a flashback pressure valve in order to prevent the explosion of the natural gas hydrate tank container (110a) between the natural gas hydrate tank container stack 110 and the fuel supply pipe 310, an emergency shutoff valve (Quick Closing Valve).
  • a flashback pressure valve in order to prevent the explosion of the natural gas hydrate tank container (110a) between the natural gas hydrate tank container stack 110 and the fuel supply pipe 310.
  • FIG. 2 is a diagram showing the configuration of a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using natural gas hydrate according to another embodiment of the present invention.
  • a system 200 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using natural gas hydrate, supplies fuel in a minimum ballast water vessel using the natural gas hydrate shown in FIG.
  • the natural gas hydrate tank container stack 210 in FIG. 2 includes a natural gas hydrate tank container 210a and a hydrogen tank 210b.
  • the hydrogen tank 210b replaces some natural gas hydrate tank containers 210a.
  • both natural gas and hydrogen can be supplied from the natural gas hydrate tank container stack 210.
  • the natural gas is a fuel supply pipe 310 of the engine 300 through a natural gas regulator 220, a natural gas control valve 240, a heat exchanger 250, a fuel flow meter 260, and a fuel flow control valve 280.
  • hydrogen is supplied to the fuel supply pipe 310 through the hydrogen regulator 230 and the hydrogen flow meter 270.
  • the hydrogen regulator 230 collects different discharge pressures of hydrogens discharged from each of the hydrogen tanks 210b so that a constant discharge pressure is maintained. Hydrogen whose discharge pressure is constant by the hydrogen regulator 230 is transferred to the hydrogen flow meter 270.
  • the hydrogen flow meter 270 serves to measure the flow rate of hydrogen, and the hydrogen through the hydrogen flow meter 270 is transferred to the fuel supply pipe 310 and sucked together with air.
  • FIG. 3 is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are disposed together with a plurality of containers on a ship to which the minimum ballast water is applied
  • FIG. 4 is a minimum balance It is a view showing a state in which the natural gas hydrate tank container stacks 110 and 210 shown in FIG. 1 or 2 are arranged to adjust the heel and trim of the ship to which the vertical alignment is applied.
  • the ship of FIG. 3 includes natural gas hydrate or natural gas hydrate and hydrogen-filled natural gas hydrate tank container stacks 110 and 210 together with a plurality of container boxes. Indicates the loaded state.
  • each container box has a different weight according to the contents, the center of gravity of the ship is not constant when viewed as a whole, but is biased to one side according to the weight of the containers.
  • the weight of the fresh water which is 80% of the volume remaining after natural gas extraction, is used to match the center of gravity of the ship. You will be able to.
  • the natural gas hydrate tank container stacks 110 and 210 are not formed to be fixed in one position, but may be moved at any position according to the weight distribution of container boxes loaded on the ship.
  • MIBS minimum ballast water
  • NOB ballast water
  • the natural gas hydrate tank container stacks 110 and 210 are balanced in the lateral and longitudinal directions based on the horizontal plane of the ship. It is arranged to fit.
  • the horizontal and longitudinal balances based on the horizontal plane of the ship are adjusted by varying the arrangement of the natural gas hydrate tank container stacks (110, 210). You will be able to fit.
  • FIG. 5 is a view showing a process of rectifying the fresh water in the natural gas hydrate tank container stacks 110 and 210 shown in FIG.
  • fresh water remaining in the natural gas hydrate tank container stacks 110 and 210 is supplied to a collection tank on land through a pump and collected.
  • the water purification device installed on land may be composed of a first pump (a), a primary fresh water storage tank (b), a filter device (c), a secondary fresh water storage tank (d) and a second pump (e). .
  • the first pump (a) serves to discharge fresh water from one or more natural gas hydrate tanks, and the discharged fresh water is first stored in the primary fresh water storage tank (b).
  • the fresh water stored in the primary fresh water storage tank (b) may contain dissolved natural gas, impurities, and foreign substances, it is rectified through the filter device (c).
  • the number of filter devices (c) is not limited, and as the number of filter devices (c) increases, the rectification effect may be maximized.
  • the fresh water remaining after the regasification of natural gas hydrate can be collected at the port of call and then recycled at the supply point, it can have the advantage of replacing the desalination plant in a water shortage area.
  • FIG. 6 is a series of processes of supplying natural gas hydrate fuel to a dual fuel engine through a system 100 capable of supplying fuel in a minimum ballast water vessel, replacing ballast water, and supplying fresh water using the natural gas hydrate shown in FIG. 1 Is a flow chart showing the order of
  • FIG. 7 is a natural gas to a dual fuel engine through a system 200 capable of supplying fuel, replacing ballast water, and supplying fresh water in a minimum ballast water vessel using the natural gas hydrate shown in FIG. It is a flow chart showing the process of supplying hydrate fuel in a series of order.
  • natural gas is extracted by vaporizing natural gas hydrate in a natural gas hydrate tank container using heat of exhaust gas or heated cooling water discharged from an engine (dual fuel engine) (S101). Then, the natural gas discharge pressure is constantly adjusted through the natural gas regulator (S102), and the temperature is controlled by continuously supplying constant heat to the natural gas through the heat exchanger (S103). Then, the flow rate of natural gas is measured through the fuel flow meter (S104), and air is sucked from the fuel supply pipe connected to the fuel intake part of the engine, and the natural gas is mixed and the air and natural gas are mixed through the fuel flow control valve. The mixing ratio of the liver is adjusted (S105). Then, the mixed fuel (air + natural gas) is supplied to the engine (S106). Heat of exhaust gas or coolant discharged by the exhaust stroke of the engine is supplied to the natural gas hydrate tank container again, so that the above steps are repeatedly performed (S107).
  • the natural gas discharge pressure is constantly adjusted through the natural gas regulator (S102), and the temperature is controlled by continuously supplying constant
  • natural gas is extracted by vaporizing natural gas hydrate in a natural gas hydrate tank container using heat of exhaust gas or coolant discharged from an engine (dual fuel engine) (S201). At the same time, the hydrogen in the hydrogen tank is discharged (S202).
  • the natural gas discharge pressure is constantly adjusted through the natural gas regulator (S202), and the temperature is controlled by continuously supplying constant heat to the natural gas through the heat exchanger (S203).
  • the hydrogen regulator smoothly adjusts the discharge pressure of the discharged hydrogen (S202').
  • the flow rate of natural gas is measured through the fuel flow meter (S204), and at the same time, air is sucked from the fuel supply pipe connected to the fuel intake part of the engine, and hydrogen is supplied to the fuel supply pipe to mix with natural gas.
  • the mixing ratio between air and natural gas is adjusted through the flow control valve (S205).
  • the mixed fuel air + natural gas
  • Heat of exhaust gas or coolant discharged by the exhaust stroke of the engine is again supplied to the natural gas hydrate tank container so that the above steps are repeatedly performed (S207).
  • the present invention after natural gas is extracted from natural gas hydrate, it can be used as a fuel for a dual fuel engine of a ship with a minimum ballast water.
  • the present invention is widely used in the shipbuilding and marine industry to realize its practical and economic value. It is a technology that can be.

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  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

La présente invention concerne un système capable d'alimentation en carburant, de remplacement d'eau de ballast et d'alimentation en eau propre à l'aide d'hydrate de gaz naturel dans un navire à eau de ballast minimale, le système pouvant extraire uniquement du gaz naturel de l'hydrate de gaz naturel et ensuite utiliser le gaz naturel extrait comme combustible pour un moteur à deux carburants d'un navire à eau de ballast minimale.
PCT/KR2019/007273 2019-06-14 2019-06-17 Système capable d'alimentation en carburant, de remplacement d'eau de ballast et d'alimentation en eau propre à l'aide d'hydrate de gaz naturel dans un navire à eau de ballast minimale WO2020251104A1 (fr)

Priority Applications (2)

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JP2021551821A JP7248813B2 (ja) 2019-06-14 2019-06-17 天然ガスハイドレートを用いて最小バラスト水船舶内の燃料供給、バラスト水交換及び清水供給が可能なシステム
CN201980093892.5A CN113557197A (zh) 2019-06-14 2019-06-17 可利用天然气水合物实现最小压载水船舶内燃料供应、压载水替代以及清水供应的系统

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KR10-2019-0070504 2019-06-14
KR1020190070504A KR102075296B1 (ko) 2019-06-14 2019-06-14 천연가스하이드레이트를 이용하여 최소평형수 선박 내 연료공급, 평형수 대체 및 청수공급이 가능한 시스템

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CN112747252B (zh) * 2021-01-15 2023-02-21 青岛科技大学 一种超级油轮利用天然气水合物的压载方法
CN114251198A (zh) * 2021-12-20 2022-03-29 常州大学 一种基于天然气水合物浆液的天然气汽车供气系统

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