EP3042844B1 - Système et procédé pour empêcher l'évaporation d'une cargaison liquide dans un navire - Google Patents

Système et procédé pour empêcher l'évaporation d'une cargaison liquide dans un navire Download PDF

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Publication number
EP3042844B1
EP3042844B1 EP14841703.3A EP14841703A EP3042844B1 EP 3042844 B1 EP3042844 B1 EP 3042844B1 EP 14841703 A EP14841703 A EP 14841703A EP 3042844 B1 EP3042844 B1 EP 3042844B1
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EP
European Patent Office
Prior art keywords
pipe
liquid cargo
pressure
storage tank
pressure regulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP14841703.3A
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German (de)
English (en)
Other versions
EP3042844A4 (fr
EP3042844A1 (fr
Inventor
Nak Hyun Kim
Young Sik Moon
Dong Kyu Choi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hanwha Ocean Co Ltd
Original Assignee
Daewoo Shipbuilding and Marine Engineering Co Ltd
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Publication of EP3042844A1 publication Critical patent/EP3042844A1/fr
Publication of EP3042844A4 publication Critical patent/EP3042844A4/fr
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/48—Arrangements of indicating or measuring devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0391—Arrangement of valves, regulators, filters inside the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/046—Localisation of the filling point in the liquid
    • F17C2225/047—Localisation of the filling point in the liquid with a dip tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F17C2250/0491—Parameters measured at or inside the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0636—Flow or movement of content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/05—Improving chemical properties
    • F17C2260/056—Improving fluid characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/061—Fluid distribution for supply of supplying vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships

Definitions

  • the present invention relates to a system and method for reducing or preventing evaporation of liquid cargo, and more particularly, to a system and method for preventing evaporation of liquid cargo in a ship, which can reduce or prevent generation of boil-off gas by adjusting the inner pressure of a loading pipe when liquid cargo such as LNG, LPG, and crude oil is loaded into a storage tank in a ship.
  • cargo ships are classified according to cargo type.
  • cargo ships for carrying liquid cargo include a crude oil tanker configured to carry crude oil, a product carrier configured to carry petroleum products, and a liquefied gas carrier configured to liquefy gases and carry the liquefied gases
  • examples of the liquefied gas carrier include a liquefied natural gas (LNG) carrier, a liquefied petroleum gas (LPG) carrier, and the like.
  • ships for carrying or storing liquid cargo include an LNG FPSO, an LNG FSRU, an LNG FSU, an LNG bunkering vessel, a chemical tanker, an ethylene carrier, and the like.
  • liquid cargo such as LNG, LPG, and crude oil is supplied and loaded into a storage tank through a feed pipe extending generally horizontally above the storage tank and a loading pipe extending downwards from the feed pipe toward a bottom of the storage tank.
  • boil-off gas generated by evaporation of the liquid cargo during loading of the liquid cargo is sent back to a liquid cargo source (for example, an onshore LNG or oil plant, a bunkering vessel, top-side LNG production facilities, or the like) or discharged to the atmosphere, instead of being loaded into a storage tank.
  • a liquid cargo source for example, an onshore LNG or oil plant, a bunkering vessel, top-side LNG production facilities, or the like
  • Boil-off gas discharged to the atmosphere can cause environmental pollution, whereas boil-off gas sent back to the source requires additional reprocessing costs and facilities.
  • the present inventor has proposed a method in which a pressure regulator is provided to a lower end of a loading pipe extending in a vertical direction of a storage tank; the inner pressure of an upper end of the loading pipe is measured; and the pressure regulator is adjusted based on the measured pressure to maintain the inner pressure of the upper end of the loading pipe at a level above the vapor pressure of liquid cargo.
  • This method is disclosed in Korean Patent No. 10-1012643 .
  • KR 2013 0000223 A discloses an apparatus for disclose an apparatus for reducing VOCs in a liquid cargo storage tank.
  • the present inventor has found that, when the pressure in the upper end of the loading pipe is maintained at a level above the vapor pressure of liquid cargo by the pressure regulator provided to the lower end of the loading pipe according to the method proposed by the present inventor, it takes more time than expected to load liquid cargo due to differential pressure caused by the pressure regulator even when the pressure regulator is fully opened.
  • the present inventor has found that, if the pressure regulator provided to the lower end of the loading pipe is not operable or causes the loading pipe to be closed due to breakdown, this can cause serious problems.
  • the present invention has been conceived to solve such problems in the art, and it is an aspect of the present invention to provide a system and method for preventing evaporation of liquid cargo in a ship, in which, in addition to a pressure regulator, a bypass pipe and a bypass valve are provided to a lower end of a loading pipe extending in a vertical direction of a storage tank, whereby liquid cargo can be loaded through both the bypass pipe and the loading pipe to increase loading speed when the requirement that the pressure in an upper end of the loading pipe be maintained at a level above the vapor pressure of liquid cargo is satisfied, and liquid cargo can be loaded through the bypass pipe upon malfunction of the pressure regulator.
  • a system for preventing evaporation of liquid cargo in a ship which prevents generation of boil-off gas when liquid cargo is loaded into a storage tank capable of storing liquid cargo
  • the system including: a pressure regulator provided to a pipe configured to load liquid cargo into the storage tank; and a sensing unit placed apart from the pressure regulator; wherein a degree of opening of the pressure regulator is controlled to maintain an inner pressure of the pipe at a level above a vapor pressure of liquid cargo based on information sensed by the sensing unit.
  • the system further includes a bypass pipe branching off from the pipe to allow the liquid cargo to be loaded into the storage tank after bypassing the pressure regulator.
  • the bypass pipe may have a smaller diameter than the pipe from which the bypass pipe branches off.
  • the bypass pipe is provided with a bypass valve controlling flow of liquid cargo through the bypass pipe.
  • the bypass valve is opened to allow liquid cargo to be loaded through both the bypass pipe and the pipe, when the pressure in the pipe can be maintained at a level above the vapor pressure of liquid cargo even though the pressure regulator is fully opened, as liquid cargo is loaded and a level of liquid cargo in the storage tank thus is raised.
  • the sensing unit may be a pressure transmitter provided to the pipe at an upstream side of the pressure regulator to measure the pressure in the pipe and controlling the degree of opening of the pressure regulator based on the measured value.
  • the sensing unit may be a level measurement device provided to the storage tank to measure a level of liquid cargo in the storage tank and controlling the degree of opening of the pressure regulator based on the measured value.
  • the pipe may include: a feed pipe extending above the storage tank; and a loading pipe extending downwards from the feed pipe towards a bottom of the storage tank, and the pressure regulator may be provided to a lower portion of the loading pipe.
  • the pipe may further include a dispensing pipe extending horizontally from a lower end of the loading pipe.
  • the pressure regulator may be a valve or a hydraulic turbine.
  • a method for preventing evaporation of liquid cargo in a ship which prevents generation of boil-off gas when liquid cargo is loaded into a storage tank capable of storing liquid cargo, the method comprising: controlling a degree of opening of a pressure regulator provided to a pipe configured to load liquid cargo into the storage tank based on information measured at a position apart from the position at which the pressure regulator is provided to maintain pressure in the pipe at a level above a vapor pressure of liquid cargo.
  • a bypass pipe branching off from the pipe and a bypass valve opening/closing the bypass pipe are provided, and wherein, upon opening of the bypass valve, liquid cargo can be loaded into the storage tank through the bypass pipe without passing through the pressure regulator while being loaded into the storage tank through the pipe.
  • the bypass valve is opened to allow liquid cargo to be loaded through both the bypass pipe and the pipe, when the pressure in the pipe can be maintained at a level above the vapor pressure of liquid cargo even though the pressure regulator is fully opened, as liquid cargo is loaded and a level of liquid cargo in the storage tank thus is raised.
  • liquid cargo may be loaded without interruption through the bypass pipe by opening the bypass valve, and the bypass pipe may have a smaller diameter than the pipe such that the pressure in the pipe can be maintained at a level above the vapor pressure of liquid cargo.
  • the information may be the pressure in the pipe measured by a pressure transmitter provided to the pipe at an upstream side of the pressure regulator.
  • the information may be the level of liquid cargo in the storage tank measured by a level measurement device provided to the storage tank.
  • the present invention provides a system and method for preventing evaporation of liquid cargo in a ship, in which, in addition to a pressure regulator, a bypass pipe and a bypass valve are provided to a lower end of a loading pipe extending in a vertical direction of a storage tank.
  • the pressure in the loading pipe particularly the pressure in an upper end of the loading pipe can be adjusted and maintained at a level above a vapor pressure of liquid cargo by the pressure regulator provided to the loading pipe, thereby reducing or preventing generation of boil-off gas during loading of liquid cargo while allowing loading of liquid cargo to be efficiently performed.
  • liquid cargo can be loaded through both the bypass pipe and the loading pipe to prevent reduction in loading speed when the requirement that the pressure in the upper end of the loading pipe be maintained at a level above the vapor pressure of liquid cargo is satisfied.
  • the loading pipe configured to load liquid cargo have a length of 28 m, and the pressure in the loading pipe be maintained at a level above the vapor pressure of liquid cargo, the flow rate of liquid cargo when only the loading pipe was opened was measured to be 7,838 m 3 /h, and the flow rate of liquid cargo when both the loading pipe and the bypass pipe were opened was measured to be 9,338 m 3 /h.
  • the flow rate was increased by about 20% when both the bypass pipe and the loading pipe were used.
  • increase in flow rate means faster loading speed of liquid cargo and thus reduction in time required to load liquid cargo.
  • Reduction in loading time allows, for example, reduction in mooring charge that should be paid according to the time for which a ship is moored in a port, thereby cutting down operating costs.
  • a system for preventing evaporation of liquid cargo in a ship according to the present invention may be used in any ship so long as the ship is equipped with a storage tank for storing liquid cargo.
  • a storage tank employing the system for preventing evaporation of liquid cargo according to the present invention is not necessarily limited to a storage tank intended to be loaded with liquid cargo and must be considered to also include storage tanks (i.e. fuel tanks) carrying oil used as an engine fuel, liquefied gas, and the like.
  • the system for preventing evaporation of liquid cargo according to the present invention may be used in all kinds of ships carrying liquid cargo as cargo or using liquid cargo as a fuel, i.e. a crude oil tanker, a product oil carrier, an LNG carrier, an LPG carrier, a PC, a liquefied carbon dioxide carrier, an LNG RV, an oil FPSO, an LNG FPSO, an LNG FSRU, an LNG FSU, an LNG bunkering vessel, a chemical tanker, an ethylene carrier, and the like.
  • FPSOs, FSRUs, and the like are classified as offshore plants, the term "ship" as used herein must be considered to include a variety of offshore plants floating in the sea as well as ships in the ordinary sense.
  • system for preventing evaporation of liquid cargo according to the present invention may be used in an onshore storage tank storing liquefied gas such as LNG, LPG, liquefied nitrogen, and liquefied carbon dioxide or oil such as crude oil and refined oil, as well as in an offshore storage tank.
  • liquefied gas such as LNG, LPG, liquefied nitrogen, and liquefied carbon dioxide or oil such as crude oil and refined oil
  • Fig. 1 is a schematic view of a system for preventing evaporation of liquid cargo according to a first exemplary embodiment of the present invention.
  • liquid cargo is supplied and loaded into a storage tank 1 from a supply source such as an onshore plant and an FPSO through a feed pipe 11 extending generally horizontally above the storage tank 1, a loading pipe 12 extending downwards from the feed pipe 11 toward a bottom of the storage tank 1, and a dispensing pipe 13 communicating with a lower end of the loading pipe 12 and extending generally horizontally.
  • a supply source such as an onshore plant and an FPSO
  • a feed pipe 11 extending generally horizontally above the storage tank 1
  • a loading pipe 12 extending downwards from the feed pipe 11 toward a bottom of the storage tank 1
  • a dispensing pipe 13 communicating with a lower end of the loading pipe 12 and extending generally horizontally.
  • the system for preventing evaporation of liquid cargo includes a pressure regulator 22 provided to a lower portion of the loading pipe 12, a pressure transmitter 21, as a sensing unit, measuring pressure in an upper end of the loading pipe 12 and controlling the pressure regulator 22 based on the measured value, a bypass pipe 14 branching off from the loading pipe 12 to bypass the pressure regulator 22, and a bypass valve 24 provided to the bypass pipe 14 to control flow of liquid cargo through the bypass pipe 14.
  • the pressure transmitter 21 is placed apart from the pressure regulator 22.
  • the dispensing pipe 13 is provided with a dispensing valve 23 and at least one dispensing valve 23 may be provided to each storage tank 1.
  • the dispensing pipe 13 may extend through a bulkhead 3.
  • a single dispensing pipe 13 may be connected to a plurality of storage tanks.
  • the pressure regulator 22 is preferably placed at the lower end of the loading pipe 12 to maintain pressure in the loading pipe 12 at a level above a vapor pressure of liquid cargo in response to electrical signals from the pressure transmitter 21.
  • the pressure regulator 22 regulates the degree of opening/closing of a lower end opening of the loading pipe 12 based on the pressure in the loading pipe, thereby allowing the pressure in the loading pipe, particularly the pressure in the upper end of the loading pipe to be maintained at a level above the vapor pressure of liquid cargo.
  • the pressure regulator 22 can prevent creation of a vacuum within the upper end (portion A) of the loading pipe 12, which is a main cause of generation of boil-off gas during loading of liquid cargo.
  • the pressure regulator 22 regulates the degree of opening/closing of the lower end opening of the loading pipe in response to signals from the pressure transmitter 21, thereby adjusting the pressure in the loading pipe 12, particularly, the pressure in the upper end of the loading pipe 12 indicated by A in the drawing.
  • a control valve, a hydraulic turbine, or the like may be used as the pressure regulator 22 .
  • control valve may be a valve operable by hydraulic pressure or pneumatic pressure when submerged under liquid cargo.
  • the control valve is configured to operate in a full-open state upon failure of a signal or failure of hydraulic pressure or pneumatic pressure, has anti-cavitation ability in a normal operation state, and preferably has explosion-proof characteristics.
  • a valve allows only a pressure drop by providing isenthalpic expansion
  • a hydraulic turbine used as the pressure regulator can theoretically provide isentropic expansion by producing a work output to allow reduction in enthalpy of liquid cargo, for example, LNG along with a pressure drop, thereby obtaining liquid cargo at a relatively low temperature at a downstream side, as compared with a valve, and thus can be more efficient.
  • Such a hydraulic turbine used as the pressure regulator 22 has already been used in a variety of fields and may include any suitable hydraulic turbine generally used in the art depending on design requirements.
  • a simple arrangement such as a valve or a hydraulic turbine is added to the system, whereby unnecessary generation of boil-off gas can be effectively suppressed during loading of liquid cargo without high equipment costs, thereby enabling efficient loading liquid cargo into the storage tank 10.
  • bypass pipe 14 branching off from the loading pipe 12 at an upstream side of the pressure regulator 22 to bypass the pressure regulator 22 is connected to the dispensing pipe 13 such that liquid cargo loaded through the feed pipe 11 and the loading pipe 12 can be directly supplied to the dispensing pipe 13 without passing through the pressure regulator 22.
  • the bypass valve 24 may be opened such that liquid cargo can be loaded through both the bypass pipe 14 and the loading pipe 12.
  • opening of the bypass valve 24 must not be performed until the pressure in the upper end of the loading pipe 12 can be maintained at a level above the vapor pressure of liquid cargo despite opening of the bypass valve 24.
  • the pressure transmitter 21 measures pressure in the upper end of the loading pipe 12.
  • the pressure regulator 22 is opened/closed or regulated in the degree of opening based on the pressure value measured by the pressure transmitter 21 to regulate loading speed of liquid cargo, thereby maintaining the pressure in the upper end of the loading pipe 12 at a level above a vapor pressure of liquid cargo.
  • liquid cargo when the pressure regulator 22 accidentally breaks down during loading of liquid cargo, liquid cargo can be loaded without interruption through the bypass pipe by opening the bypass valve 24 provided to the bypass pipe 14.
  • the bypass valve 24 provided to the bypass pipe 14.
  • the bypass valve 24 is opened such that liquid cargo can be loaded through both the bypass pipe 14 and the loading pipe 12, thereby offsetting the pressure differential caused by the pressure regulator 22.
  • FIG. 2 is a schematic view of a system for preventing evaporation of liquid cargo according to a second exemplary embodiment of the present invention.
  • liquid cargo is supplied and loaded into a storage tank 1 from a supply source such as an onshore plant and an FPSO through a feed pipe 11 extending generally horizontally above the storage tank 1, a loading pipe 12 extending downwards from the feed pipe 11 toward a bottom of the storage tank 1, and a dispensing pipe 13 communicating with a lower end of the loading pipe 12 and extending generally horizontally.
  • a supply source such as an onshore plant and an FPSO
  • a feed pipe 11 extending generally horizontally above the storage tank 1
  • a loading pipe 12 extending downwards from the feed pipe 11 toward a bottom of the storage tank 1
  • a dispensing pipe 13 communicating with a lower end of the loading pipe 12 and extending generally horizontally.
  • the system for preventing evaporation of liquid cargo includes a pressure regulator 22 provided to a lower portion of the loading pipe 12, a level measurement device 31, as a sensing unit, provided to the storage tank 1 and measuring the level of liquid cargo in the storage tank 1 to control the pressure regulator 22 based on the measured value, a bypass pipe 14 branching off from the loading pipe 12 to bypass the pressure regulator 22, and a bypass valve 24 provided to the bypass pipe 14 to control flow of liquid cargo through the bypass pipe 14.
  • the level measurement device 31 is placed apart from the pressure regulator 22, and, for example, may be mounted at an upper end of the storage tank 1.
  • the system for preventing evaporation of liquid cargo according to the second exemplary embodiment is substantially the same as the system for preventing evaporation of liquid cargo according to the first exemplary embodiment except for the level measurement device 31 measuring the level of liquid cargo in the storage tank 1 as the sensing unit, the same components as the first exemplary embodiment are denoted by the same reference numerals and detailed descriptions thereof are omitted.
  • Fig. 3 is a schematic view of a system for preventing evaporation of liquid cargo according to a third exemplary embodiment of the present invention.
  • liquid cargo is supplied and loaded into a storage tank 1 from a supply source such as an onshore plant and an FPSO through a feed pipe 11 extending generally horizontally above the storage tank 1 and a loading pipe 12 extending downwards from the feed pipe 11 toward a bottom of the storage tank 1.
  • a supply source such as an onshore plant and an FPSO
  • a feed pipe 11 extending generally horizontally above the storage tank 1 and a loading pipe 12 extending downwards from the feed pipe 11 toward a bottom of the storage tank 1.
  • the system for preventing evaporation of liquid cargo includes a pressure regulator 22 provided to a lower portion of the loading pipe 12, a pressure transmitter 21, as a sensing unit, measuring pressure in an upper end of the loading pipe 12 and controlling the pressure regulator 22 based on the measured value, a bypass pipe 14 branching off from the loading pipe 12 to bypass the pressure regulator 22, and a bypass valve 24 provided to the bypass pipe 14 to control flow of liquid cargo through the bypass pipe 14.
  • the pressure transmitter 21 is placed apart from the pressure regulator 22.
  • One loading pipe 12 may be provided to each storage tank 1. Generally, the lower end of the loading pipe 12 is located near a bottom of the storage tank 1 without being secured to the bottom.
  • the pressure regulator 22 is preferably placed at a lower end of the loading pipe 12 to maintain pressure in the loading pipe 12 at a level above a vapor pressure of liquid cargo in response to electrical signals from the pressure transmitter 21.
  • the pressure regulator 22 regulates the degree of opening/closing of a lower end opening of the loading pipe 12 based on the pressure in the loading pipe, thereby allowing the pressure in the loading pipe, particularly the pressure in the upper end of the loading pipe to be maintained at a level above the vapor pressure of liquid cargo.
  • the pressure regulator 22 can prevent creation of a vacuum within the upper end (portion A) of the loading pipe 12, which is a main cause of generation of boil-off gas during loading of liquid cargo.
  • the pressure regulator 22 regulates the degree of opening/closing of the lower end opening of the loading pipe in response to signals from the pressure transmitter 21, thereby adjusting the pressure in the loading pipe 12, particularly, the pressure in the upper end of the loading pipe 12 indicated by A in the drawing.
  • a control valve, a hydraulic turbine, or the like may be used as the pressure regulator 22 .
  • control valve may be a valve operable by hydraulic pressure or pneumatic pressure when submerged under liquid cargo.
  • the control valve is configured to operate in a full-open state upon failure of a signal or failure of hydraulic pressure or pneumatic pressure, has anti-cavitation ability in a normal operation state, and preferably has explosion-proof characteristics.
  • a valve allows only a pressure drop by providing isenthalpic expansion
  • a hydraulic turbine when used as the pressure regulator can theoretically provide isentropic expansion by producing a work output to allow reduction in enthalpy of liquid cargo, for example, LNG along with a pressure drop, thereby obtaining liquid cargo at a relatively low temperature at the downstream side as compared with a valve, and thus can be more efficient.
  • Such a hydraulic turbine used as the pressure regulator 22 has already been used in a variety of fields and may include any suitable hydraulic turbine generally used in the art depending on design conditions.
  • a simple arrangement such as a valve or hydraulic turbine is added to the system, whereby unnecessary generation of boil-off gas can be effectively suppressed during loading of liquid cargo without high equipment costs, thereby enabling efficient loading of liquid cargo into the storage tank 10.
  • bypass pipe 14 branching off from the loading pipe 12 to bypass the pressure regulator 22 branches off from the loading pipe 12 at the upstream side of the pressure regulator 22 and then extends generally parallel to the loading pipe 12 such that liquid cargo loaded through the feed pipe 11 and the loading pipe 12 can be directly supplied to the storage tank 1 through the bypass pipe 14 without passing through the pressure regulator 22.
  • the bypass valve 24 may be opened such that liquid cargo can be loaded through both the bypass pipe 14 and the loading pipe 12.
  • opening of the bypass valve 24 must not be performed until the pressure in the upper end of the loading pipe 12 can be maintained at a level above the vapor pressure of liquid cargo despite opening of the bypass valve 24.
  • the pressure transmitter 21 measures pressure in the upper end of the loading pipe 12.
  • the pressure regulator 22 is opened/closed or regulated in the degree of opening based on the pressure value measured by the pressure transmitter 21 to regulate loading speed of liquid cargo, thereby maintaining the pressure in the upper end of the loading pipe 12 at a level above a vapor pressure of liquid cargo.
  • liquid cargo when the pressure regulator 22 accidentally breaks down during loading of liquid cargo, liquid cargo can be loaded without interruption through the bypass pipe 14 by opening the bypass valve 24 provided to the bypass pipe 14.
  • the bypass pipe 14 has a smaller diameter than the loading pipe 12.
  • the bypass valve 24 is opened such that liquid cargo can be loaded through both the bypass pipe 14 and the loading pipe 12, thereby offsetting the pressure differential caused by the pressure regulator 22.
  • Fig. 4 is a schematic view of a system for preventing evaporation of a liquid cargo according to a fourth exemplary embodiment of the present invention.
  • liquid cargo is supplied and loaded into a storage tank 1 from a supply source such as an onshore plant and an FPSO through a feed pipe 11 extending generally horizontally above the storage tank 1 and a loading pipe 12 extending downwards from the feed pipe 11 toward a bottom of the storage tank 1.
  • a supply source such as an onshore plant and an FPSO
  • a feed pipe 11 extending generally horizontally above the storage tank 1 and a loading pipe 12 extending downwards from the feed pipe 11 toward a bottom of the storage tank 1.
  • the system for preventing evaporation of liquid cargo includes a pressure regulator 22 provided to a lower portion of the loading pipe 12, a level measurement device 31, as a sensing unit, provided to the storage tank 1 and measuring the level of liquid cargo in the storage tank 1 to control the pressure regulator 22 based on the measured value, a bypass pipe 14 branching off from the loading pipe 12 to bypass the pressure regulator 22, and a bypass valve 24 provided to the bypass pipe 14 to control flow of liquid cargo through the bypass pipe 14.
  • the level measurement device 31 is placed apart from the pressure regulator 22, and, for example, may be mounted at an upper end of the storage tank 1.
  • the system for preventing evaporation of liquid cargo according to the fourth exemplary embodiment is substantially the same as the system for preventing evaporation of liquid cargo according to the third exemplary embodiment except for including the level measurement device 31 measuring the level of liquid cargo in the storage tank 1 as the sensing unit, the same components as the third exemplary embodiment are denoted by the same reference numerals and detailed descriptions thereof are omitted.
  • the system according to the exemplary embodiments of the present invention may be modified to include a separate valve (not shown) provided to the loading pipe 12 at the upstream side of the pressure regulator 22, wherein the valve is closed during maintenance of the pressure regulator 22 to facilitate maintenance work.
  • the separate valve may be a manual valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Claims (11)

  1. Système pour empêcher l'évaporation d'une cargaison liquide dans un navire, qui empêche la génération de gaz d'évaporation lorsqu'une cargaison liquide est chargée dans un réservoir de stockage (1) capable de stocker une cargaison liquide, le système comprenant :
    un régulateur de pression (22) prévu sur un premier tuyau (12) configuré pour charger de la cargaison liquide dans le réservoir de stockage (1) ;
    une unité de détection (21, 31) placée à l'écart du régulateur de pression (22) ; et
    un tuyau de dérivation (14) bifurquant du premier tuyau (12) pour permettre à de la cargaison liquide de contourner le régulateur de pression (22) et d'être chargée dans le réservoir de stockage (1),
    dans lequel un degré d'ouverture du régulateur de pression (22) est commandé pour maintenir la pression dans le premier tuyau (12) à un niveau au-dessus d'une pression de vapeur de la cargaison liquide sur la base d'une information détectée par l'unité de détection (21, 31),
    dans lequel le tuyau de dérivation (14) est prévu avec une valve de dérivation (24) contrôlant l'écoulement de la cargaison liquide à travers le tuyau de dérivation (14), et
    dans lequel la valve de dérivation (24) peut être ouverte pour permettre à de la cargaison liquide d'être chargée à la fois par le tuyau de dérivation (14) et le premier tuyau (12), lorsque la pression dans le premier tuyau (12) peut être maintenue à un niveau au-dessus de la pression de vapeur de la cargaison liquide même si le régulateur de pression (22) est complètement ouvert, au fur et à mesure que la cargaison liquide est chargée, et un niveau de la cargaison liquide dans le réservoir de stockage (1) est ainsi augmenté.
  2. Système selon la revendication 1, dans lequel le tuyau de dérivation (14) a un plus petit diamètre que le premier tuyau (12) à partir duquel le tuyau de dérivation (14) bifurque.
  3. Système selon la revendication 1 ou 2, dans lequel l'unité de détection est un transmetteur de pression (21) prévu sur le premier tuyau (12) du côté en amont du régulateur de pression (22) afin de mesurer la pression dans le premier tuyau (12) et contrôler le degré d'ouverture du régulateur de pression (22) sur la base de la valeur mesurée.
  4. Système selon la revendication 1 ou 2, dans lequel l'unité de détection est un dispositif de mesure de niveau (31) prévu sur le réservoir de stockage (1) pour mesurer un niveau de la cargaison liquide dans le réservoir de stockage (1) et contrôler le degré d'ouverture du régulateur de pression (22) sur la base de la valeur mesurée.
  5. Système selon l'une quelconque des revendications 1 à 4,
    dans lequel le premier tuyau (12) comprend un tuyau d'alimentation (11) s'étendant au-dessus du réservoir de stockage (1) ; et un tuyau de chargement (12) s'étendant vers le bas à partir du tuyau d'alimentation (11) vers un fond du réservoir de stockage (1), et dans lequel le régulateur de pression (22) est prévu sur une partie inférieure du tuyau de chargement.
  6. Système selon la revendication 5, dans lequel le premier tuyau (12) comprend en outre un tuyau de distribution (13) s'étendant horizontalement à partir d'une extrémité inférieure du tuyau de chargement.
  7. Système selon l'une quelconque des revendications 1 à 6, dans lequel le régulateur de pression (22) est une valve ou une turbine hydraulique.
  8. Procédé pour empêcher l'évaporation d'une cargaison liquide dans un navire, qui empêche la génération de gaz d'évaporation lorsqu'une cargaison liquide est chargée dans un réservoir de stockage (1) capable de stocker une cargaison liquide, le procédé comprenant le fait de :
    contrôler un degré d'ouverture d'un régulateur de pression (22) prévu sur un premier tuyau (12) configuré pour charger de la cargaison liquide dans le réservoir de stockage (1) sur la base d'une information mesurée à une position à l'écart de la position à laquelle le régulateur de pression (22) est prévu pour maintenir la pression dans le premier tuyau (12) à un niveau au-dessus d'une pression de vapeur de la cargaison liquide,
    dans lequel un tuyau de dérivation (14) bifurquant du tuyau (12) et une valve de dérivation (24) ouvrant / fermant le tuyau de dérivation (14) sont prévus, et dans lequel, suite à l'ouverture de la valve de dérivation (14), de la cargaison liquide peut être chargée dans le réservoir de stockage (1) par le tuyau de dérivation (14) sans passer par le régulateur de pression (22) tout en étant chargée dans le réservoir de stockage (1) par le premier tuyau (12), et
    dans lequel la valve de dérivation (14) est ouverte pour permettre à de la cargaison liquide d'être chargée à la fois par le tuyau de dérivation (14) et le premier tuyau (12), lorsque la pression dans le premier tuyau peut être maintenue à un niveau au-dessus de la pression de vapeur de la cargaison liquide même si le régulateur de pression (22) est complètement ouvert, au fur et à mesure que la cargaison liquide est chargée, et un niveau de la cargaison liquide dans le réservoir de stockage (1) est ainsi augmenté.
  9. Procédé selon la revendication 8, dans lequel, suite au dysfonctionnement du régulateur de pression (22), la cargaison liquide peut être chargée sans interruption par le tuyau de dérivation (14) en ouvrant la valve de dérivation (24), et dans lequel le tuyau de dérivation (14) a un plus petit diamètre que le premier tuyau (12) de sorte que la pression dans le premier tuyau (12) peut être maintenue à un niveau au-dessus de la pression de vapeur de la cargaison liquide.
  10. Procédé selon la revendication 8 ou 9, dans lequel l'information est la pression dans le premier tuyau (12) mesurée par un transmetteur de pression (21) prévu sur le premier tuyau (12) d'un côté en amont du régulateur de pression (22).
  11. Procédé selon la revendication 8 ou 9, dans lequel l'information est un niveau de la cargaison liquide dans le réservoir de stockage (1) mesurée par un dispositif de mesure de niveau (31) prévu sur le réservoir de stockage (1).
EP14841703.3A 2013-09-06 2014-09-05 Système et procédé pour empêcher l'évaporation d'une cargaison liquide dans un navire Active EP3042844B1 (fr)

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KR1020130107139A KR101408347B1 (ko) 2013-09-06 2013-09-06 선박의 액체화물 증발방지 시스템 및 방법
PCT/KR2014/008428 WO2015034331A1 (fr) 2013-09-06 2014-09-05 Système et procédé pour empêcher l'évaporation d'une cargaison liquide dans un navire

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EP4194329A4 (fr) * 2020-10-28 2024-01-10 Mitsubishi Shipbuilding Co., Ltd. Corps flottant, procédé de chargement de dioxyde de carbone liquéfié, et procédé de déchargement de dioxyde de carbone liquéfié

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KR102608686B1 (ko) * 2018-11-15 2023-12-01 한화오션 주식회사 카고 파이핑 시스템 및 lng 로딩 방법
JP7429155B2 (ja) * 2020-05-08 2024-02-07 三菱造船株式会社 船舶
CN118103289A (zh) 2021-11-04 2024-05-28 三菱造船株式会社 船舶

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NO315417B1 (no) 2001-12-06 2003-09-01 Knutsen Oas Shipping As Fremgangsmåte og anordning ved lastekolonne
KR101012643B1 (ko) * 2008-07-16 2011-02-09 대우조선해양 주식회사 원유 운반선의 휘발성 유기화합물 저감 시스템 및 방법
KR101076269B1 (ko) 2009-10-08 2011-10-26 대우조선해양 주식회사 액화가스 운반선의 플래쉬 가스 저감장치
KR101246908B1 (ko) * 2011-06-17 2013-03-25 삼성중공업 주식회사 액상화물 저장 탱크의 휘발성 유기 화합물 저감 장치
KR101291357B1 (ko) * 2011-06-22 2013-07-30 삼성중공업 주식회사 액상화물 저장 탱크의 휘발성 유기 화합물 저감 장치

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EP4194329A4 (fr) * 2020-10-28 2024-01-10 Mitsubishi Shipbuilding Co., Ltd. Corps flottant, procédé de chargement de dioxyde de carbone liquéfié, et procédé de déchargement de dioxyde de carbone liquéfié

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ES2715670T3 (es) 2019-06-05
EP3042844A4 (fr) 2017-04-26
KR101408347B1 (ko) 2014-06-17
EP3042844A1 (fr) 2016-07-13
JP2016536209A (ja) 2016-11-24
SG11201601704SA (en) 2016-04-28
JP6244030B2 (ja) 2017-12-06
CN105705414A (zh) 2016-06-22
WO2015034331A1 (fr) 2015-03-12

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