WO2015034331A1 - 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 PDFInfo
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- WO2015034331A1 WO2015034331A1 PCT/KR2014/008428 KR2014008428W WO2015034331A1 WO 2015034331 A1 WO2015034331 A1 WO 2015034331A1 KR 2014008428 W KR2014008428 W KR 2014008428W WO 2015034331 A1 WO2015034331 A1 WO 2015034331A1
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- liquid cargo
- pipe
- control means
- pressure control
- storage tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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 preventing or reducing the evaporation of liquid cargo, the liquid cargo of LNG, LPG, crude oil, etc. when loading the cargo in the storage tank of the vessel by loading the liquid cargo by adjusting the pressure inside the loading pipe
- the present invention relates to a system and a method for preventing vaporization of liquid cargo of a ship which can prevent or reduce generation of boil-off gas.
- the cargo ship is divided according to the type of cargo.
- the cargo ship carrying liquid cargo is a crude oil tanker for transporting crude oil, a product carrier for transporting petroleum products, and liquefied gas.
- liquefied gas carriers for transportation, and liquefied gas carriers include LNG carriers (Liquefied natural gas carriers) and LPG carriers (Liquefied petroleum gas carriers).
- Other ships that transport or store liquid cargo include LNG FPSO, LNG FSRU, LNG FSU, LNG bunkering vessel, chemical tanker and ethylene carrier.
- a supply pipe extending substantially horizontally from the top of the storage tank and extending downward from the supply pipe toward the bottom of the storage tank.
- the liquid cargo was supplied into the storage tank through a loading pipe.
- the pressure inside the upper end of the loading pipe extending in the vertical direction of the storage tank may be formed lower than the vapor pressure of the liquid cargo due to the head difference in the piping.
- Evaporated gases generated by vaporizing liquid cargo during loading are not loaded into storage tanks, but are returned to the source of liquid cargo (e.g., onshore LNG or refinery plants, bunkering vessels, or topside LNG production facilities) or to atmosphere. Released into the air. If the evaporated gas is released into the atmosphere, there is a risk of environmental pollution, and even if the gas is returned to the supplier, facilities and costs for reprocessing the evaporated gas are consumed.
- liquid cargo e.g., onshore LNG or refinery plants, bunkering vessels, or topside LNG production facilities
- the present applicant installs a pressure control means at the lower end of the loading pipe extending in the up and down direction of the storage tank, measures the internal pressure of the upper end of the loading pipe and measures the pressure control means based on the measured pressure value.
- a method of maintaining the internal pressure of the upper end of the loading pipe above the vapor pressure of the liquid cargo was proposed. Such a method is disclosed in Korean Patent No. 10-1012643.
- the present invention for solving the above problems, by installing a bypass pipe and a bypass valve with a pressure control means at the bottom of the loading pipe extending in the vertical direction of the storage tank, the internal pressure of the upper end of the loading pipe is maintained above the steam pressure If the conditions are satisfied, the cargo speed is increased by loading the liquid cargo through the bypass pipe together with the loading pipe, and the liquid cargo evaporation of the ship allows the liquid cargo loading operation to be carried out through the bypass pipe when the pressure control means fails. It is an object of the present invention to provide a prevention system and method.
- a liquid cargo evaporation prevention system of a ship that prevents the generation of the liquid cargo evaporation when shipping the liquid cargo in a storage tank that can store the liquid cargo
- liquid cargo Pressure control means installed in a pipe for loading the tank into a storage tank; Sensing means disposed at a position spaced apart from the position at which the pressure control means is installed; And controlling the opening degree of the pressure control means so that the internal pressure of the pipe can be maintained above the vapor pressure of the liquid cargo based on the information detected by the sensing means.
- the liquid cargo evaporation prevention system of the ship may further include a bypass pipe branching from the pipe to bypass the pressure control means so that the liquid cargo can be shipped to the storage tank.
- the diameter of the bypass pipe may be smaller than the diameter of the pipe branched by the bypass pipe.
- the bypass pipe may be provided with a bypass valve for controlling the flow of the liquid cargo through the bypass pipe.
- the bypass pipe is moved together with the piping when the internal pressure of the piping is maintained above the vapor pressure of the liquid cargo even when the pressure control means is completely opened.
- the bypass valve is opened so that the liquid cargo can also be shipped through.
- the sensing means may be a pressure transmitter installed upstream from the pressure control means in the pipe to measure the internal pressure of the pipe and control the opening degree of the pressure control means based on the measured value.
- the sensing means may be a water level measuring device installed in the storage tank to measure the level of the liquid cargo in the storage tank, and to control the opening degree of the pressure control means based on the measured value.
- the pipe may include a supply pipe extending from an upper side of the storage tank, and a loading pipe extending downward from the supply pipe toward the bottom of the storage tank, and the pressure control means may be installed below the loading pipe. Can be.
- the pipe may further include a distribution pipe extending horizontally from the lower end of the loading pipe.
- the pressure control means may be a valve or aberration.
- a liquid cargo evaporation prevention method of a ship that prevents the generation of liquid cargo evaporation when the liquid cargo is shipped to a storage tank capable of storing the liquid cargo, loading the liquid cargo into the storage tank
- the opening degree of the pressure control means installed in the pipe based on the information measured at a position spaced apart from the position where the pressure control means is installed, so that the internal pressure of the pipe can be maintained above the vapor pressure of the liquid cargo.
- a bypass pipe branching from the pipe and a bypass valve for opening and closing the bypass pipe when opening the bypass valve, the liquid cargo through the pipe
- the liquid cargo can be shipped to the storage tank without passing through the pressure control means through the bypass pipe.
- the bypass valve can be opened so that the liquid cargo can be shipped through the bypass pipe together with the pipe.
- the diameter of the bypass pipe so that the internal pressure of the pipe can be maintained above the vapor pressure of the liquid cargo It may be smaller than the diameter of the pipe.
- the information may be an internal pressure of the pipe measured by a pressure transmitter installed upstream of the pressure control means in the pipe.
- the information may be the level of the liquid cargo in the storage tank measured by the level measuring device installed in the storage tank.
- a liquid cargo evaporation prevention system and method of a ship provided with a bypass pipe and a bypass valve with a pressure control means at the lower end of the loading pipe extending in the vertical direction of the storage tank.
- the pressure control means installed on the loading pipe can maintain the pressure in the loading pipe, in particular the upper internal pressure of the loading pipe above the vapor pressure of the liquid cargo, When loading the liquid cargo it is possible to prevent or reduce the generation of evaporated gas, it is possible to perform the efficient liquid cargo loading operation.
- the length of the loading pipe for loading the liquid cargo is 28m, the internal pressure of the loading pipe can be maintained above the vapor pressure of the liquid cargo.
- Increasing the flow rate means that the shipping speed of the liquid cargo is increased, which in turn means that the time required for loading the liquid cargo is shortened. If the shipment time is shortened, for example, the mooring cost of the ship to be paid in accordance with the time moored in the port can be reduced, thereby saving operating costs.
- FIG. 1 is a view schematically showing a liquid cargo evaporation preventing system according to a first embodiment of the present invention
- FIG. 2 is a view schematically showing a liquid cargo evaporation preventing system according to a second embodiment of the present invention
- FIG. 3 schematically shows a liquid cargo evaporation preventing system according to a third embodiment of the present invention.
- FIG. 4 is a view schematically showing a liquid cargo evaporation preventing system according to a fourth embodiment of the present invention.
- the liquid cargo evaporation preventing system of the ship if a storage tank for storing the liquid cargo is installed can be applied to any kind of ship.
- the storage tank to which the liquid cargo evaporation prevention system of the present invention is applied is not necessarily limited to loading liquid cargo as cargo, but is a storage tank for loading oil or liquefied gas to be used as fuel of an engine (ie, fuel). Even tanks).
- the liquid cargo evaporation prevention system of the present invention is for all types of ships that load liquid cargo as cargo or use as fuel, ie crude oil carrier, refinery carrier, LNG carrier, LPG carrier, PC ship, liquid carbon dioxide carrier, LNG It can be applied to RV, Oil FPSO, LNG FPSO, LNG FSRU, LNG FSU, LNG bunkering vessel, chemical tanker and ethylene carrier.
- various FPSOs and FSRUs are generally divided into marine plants, the concept of a vessel in this specification is not only a ship in a general sense capable of sailing on its own, but also various marine plants that can be used floating in the sea. Should be considered to include.
- liquid cargo evaporation prevention system of the present invention can be applied to a storage tank for storing liquefied gas such as LNG, LPG, liquefied nitrogen, liquefied carbon dioxide, or oil such as crude oil, refined oil, etc. .
- the liquid cargo has a supply pipe 11 extending substantially horizontally from the top of the storage tank 1, and downward from the supply pipe 11 toward the bottom of the storage tank 1. It is supplied to the storage tank 1 from a supply source such as a land plant, FPSO, and shipped through an extended loading pipe 12 and a distribution pipe 13 extending substantially horizontally in communication with a lower end of the loading pipe 12. .
- a supply source such as a land plant, FPSO
- the pressure control means 22 provided at the lower portion of the loading pipe 12 and the upper internal pressure of the loading pipe 12 are measured to measure the measured value.
- the bypass pipe 14 is provided with a bypass valve 24 for controlling the flow of the liquid cargo through the bypass pipe (14).
- the pressure transmitter 21 as the sensing means is arranged at a position spaced apart from the position where the pressure control means 22 is installed.
- Dispensing pipe 13 is provided with a distribution valve 23, this distribution valve 23 may be installed at least one for each storage tank (1).
- the distribution pipe 13 When the liquid cargo is stored at room temperature, such as a crude oil storage tank, the distribution pipe 13 may be installed to extend through the partition 3. In this case, one distribution pipe 13 may be connected to the plurality of storage tanks.
- the pressure control means 22 is preferably installed at the lower end of the loading pipe 12 so as to receive the electrical signal output from the pressure transmitter 21 to maintain the pressure inside the loading pipe 12 above the vapor pressure (Vapor pressure). . That is, the pressure control means 22 adjusts the opening and closing degree of the lower opening of the loading pipe 12 according to the pressure value inside the loading pipe so that the pressure in the loading pipe, in particular, the internal pressure of the upper end of the loading pipe is higher than or equal to the vapor pressure of the liquid cargo. do. Therefore, the pressure control means 22 can prevent the formation of the vacuum formed at the upper end (part A) of the loading pipe 12, which is also a major cause of the generation of the boil-off gas upon loading the liquid cargo.
- the pressure control means 22 receives a signal from the pressure transmitter 21 and adjusts the degree of opening and closing, while controlling the pressure in the loading pipe 12, in particular, the upper end of the loading pipe 12 indicated by A in the drawing. Adjust the internal pressure.
- a control valve, a hydraulic turbine, or the like can be used as the pressure control means 22 .
- the control valve as the pressure control means may be a valve operable by hydraulic pressure or pneumatic pressure while locked in the liquid cargo.
- the valve is configured to operate in a fully open state in the event of a signal, hydraulic or pneumatic error, has an anti-cavitation function in a normal operating state, and is preferably explosion-proof.
- the valve theoretically drops only the pressure due to isoenthalpy expansion, but when aberration as a pressure control means is used, theoretically isotropic expansion is produced by producing work, and in this process, the pressure drop and the enthalpy of liquid cargo such as LNG It can be more efficient as the lower temperature liquid cargo can be obtained downstream compared to the valve, thereby reducing it.
- the aberration used as the pressure control means 22 is already used in various fields, and can be used by adopting an appropriate one among the existing aberrations according to the design conditions.
- bypass pipe 14 which is installed to divert from the loading pipe 12 on the upstream side of the pressure control means 22 and bypass the pressure control means 22 is connected to the distribution pipe 13, Accordingly, the liquid cargo shipped through the supply pipe 11 and the loading pipe 12 may be directly supplied to the distribution pipe 13 without passing through the pressure control means 22.
- the bypass valve 24 installed in the bypass pipe 14 can be opened to continue the loading operation of the liquid cargo. At this time, when the bypass valve 24 is suddenly opened, the internal pressure of the upper end of the loading pipe 12 is lowered, so that a vacuum may occur in the loading pipe 12, so that the diameter of the bypass pipe 14 is the loading pipe 12. It is preferably made smaller than the diameter of.
- the bypass valve 24 is opened to load the liquid cargo through the bypass piping 14 together with the loading pipe 12. Can be done. At this time, opening of the bypass valve 24 should be made when the pressure in the upper inner space of the loading pipe 12 can be maintained above the vapor pressure of the liquid cargo even if the bypass valve 24 is opened.
- the pressure control means 22 is completely opened during the shipment of the liquid cargo, the problem that the shipping speed is reduced due to the differential pressure generated by the pressure control means can be solved through the bypass pipe 14, By preventing the slowing down of the shipping speed, it is possible to accelerate the time for the shipment to be completed.
- the pressure transmitter 21 When the liquid cargo such as LNG, LPG, crude oil, etc. is loaded through the supply pipe 11, the loading pipe 12, and the distribution pipe 13 inside the storage tank 1, the pressure transmitter 21 is loaded pipe. Measure the internal pressure at the top of (12). Based on the pressure value measured by the pressure transmitter 21, the pressure control means 22 is opened or closed or the opening degree is adjusted to adjust the shipping speed of the liquid cargo so that the upper internal pressure of the loading pipe 12 is the vapor pressure of the liquid cargo. It can be maintained above.
- bypass pipe 14 is opened by opening the bypass valve 24 installed in the bypass pipe 14 according to the present embodiment. Shipment operation can be continued through the), and because the diameter of the bypass pipe 14 is smaller than the diameter of the loading pipe 12, it is possible to reduce the risk of the cavity occurring at the top of the loading pipe.
- the liquid cargo has a supply pipe 11 extending substantially horizontally above the storage tank 1, and downward from the supply pipe 11 toward the bottom of the storage tank 1. It is supplied to the storage tank 1 from a supply source such as a land plant, FPSO, and shipped through an extended loading pipe 12 and a distribution pipe 13 extending substantially horizontally in communication with a lower end of the loading pipe 12. .
- a supply source such as a land plant, FPSO
- the pressure control means 22 is installed in the lower portion of the loading pipe 12 and the storage tank (1) installed in the storage tank (1) to bypass the pressure control means 22 by branching from the water level measuring device 31 as a sensing means for measuring the liquid level of the liquid cargo and controlling the pressure control means 22 based on the measured value, and the loading pipe 12.
- the bypass pipe 14 is provided, and the bypass valve 14 is installed in the bypass pipe 14 to regulate the flow of the liquid cargo through the bypass pipe 14.
- the water level measuring device 31 as the sensing means is arranged at a position spaced apart from the position where the pressure control means 22 is installed, and can be installed on the upper end of the storage tank 1, for example.
- the liquid cargo evaporation preventing system according to the second embodiment includes the water level measuring device 31 which measures the level of the liquid cargo stored in the storage tank 1 as the sensing means. Since it is different from the liquid cargo evaporation prevention system which concerns on this, the same structure as the 1st Embodiment is attached
- FIG. 3 is a schematic configuration diagram of a liquid cargo evaporation preventing system according to a third preferred embodiment of the present invention.
- the liquid cargo has a supply pipe 11 extending substantially horizontally from the top of the storage tank 1, and downward from the supply pipe 11 toward the bottom of the storage tank 1. It is supplied to the storage tank 1 from the supply source of the land plant, FPSO and the like through the extended load pipe 12 is shipped.
- the pressure control means 22 provided at the lower portion of the loading pipe 12 and the upper internal pressure of the loading pipe 12 are measured to measure the measured value.
- the bypass pipe 14 is provided with a bypass valve 24 for controlling the flow of the liquid cargo through the bypass pipe (14).
- the pressure transmitter 21 as the sensing means is arranged at a position spaced apart from the position where the pressure control means 22 is installed.
- Loading pipe 12 may be installed one for each storage tank (1).
- the bottom of the loading pipe 12 is located close to the bottom of the storage tank 1, but is not fixed to the bottom.
- the pressure control means 22 is preferably installed at the lower end of the loading pipe 12 so as to receive the electrical signal output from the pressure transmitter 21 to maintain the pressure inside the loading pipe 12 above the vapor pressure (Vapor pressure). . That is, the pressure control means 22 adjusts the opening and closing degree of the lower opening of the loading pipe 12 according to the pressure value inside the loading pipe so that the pressure in the loading pipe, in particular, the internal pressure of the upper end of the loading pipe is higher than or equal to the vapor pressure of the liquid cargo. do. Therefore, the pressure control means 22 can prevent the formation of the vacuum formed at the upper end (part A) of the loading pipe 12, which is also a major cause of the generation of the boil-off gas upon loading the liquid cargo.
- the pressure control means 22 receives a signal from the pressure transmitter 21 and adjusts the degree of opening and closing, while controlling the pressure in the loading pipe 12, in particular, the upper end of the loading pipe 12 indicated by A in the drawing. Adjust the internal pressure.
- a control valve, a hydraulic turbine, or the like can be used as the pressure control means 22 .
- the control valve as the pressure control means may be a valve operable by hydraulic pressure or pneumatic pressure while locked in the liquid cargo.
- the valve is configured to operate in a fully open state in the event of a signal, hydraulic or pneumatic error, has an anti-cavitation function in a normal operating state, and is preferably explosion-proof.
- the valve theoretically drops only the pressure due to isoenthalpy expansion, but when aberration as a pressure control means is used, theoretically isotropic expansion is produced by producing work, and in this process, the pressure drop and the enthalpy of liquid cargo such as LNG It can be more efficient as the lower temperature liquid cargo can be obtained downstream compared to the valve, thereby reducing it.
- the aberration used as the pressure control means 22 is already used in various fields, and can be used by adopting an appropriate one among the existing aberrations according to the design conditions.
- the bypass pipe 14 which is installed to branch from the loading pipe 12 and bypass the pressure control means 22 is branched from the loading pipe 12 on the upstream side of the pressure control means 22.
- the liquid cargo which extends substantially parallel to the loading pipe 12 and is thus shipped through the supply pipe 11 and the loading pipe 12, is stored through the bypass pipe 14 without passing through the pressure control means 22. It can be shipped in tank 1.
- the bypass valve 24 installed in the bypass pipe 14 can be opened to continue the loading operation of the liquid cargo. At this time, when the bypass valve 24 is suddenly opened, the internal pressure of the upper end of the loading pipe 12 is lowered, so that a vacuum may occur in the loading pipe 12, so that the diameter of the bypass pipe 14 is the loading pipe 12. It is preferably made smaller than the diameter of.
- the bypass valve 24 is opened to load the liquid cargo through the bypass piping 14 together with the loading pipe 12. Can be done. At this time, opening of the bypass valve 24 should be made when the pressure in the upper inner space of the loading pipe 12 can be maintained above the vapor pressure of the liquid cargo even if the bypass valve 24 is opened.
- the pressure control means 22 is completely opened during the shipment of the liquid cargo, the problem that the shipping speed is reduced due to the differential pressure generated by the pressure control means can be solved through the bypass pipe 14, By preventing the slowing down of the shipping speed, it is possible to accelerate the time for the shipment to be completed.
- the pressure transmitter 21 When loading a liquid cargo such as LNG, LPG, crude oil, etc. through the supply pipe 11 and the loading pipe 12 inside the storage tank 1, the pressure transmitter 21 is inside the upper end of the loading pipe 12. Measure the pressure. Based on the pressure value measured by the pressure transmitter 21, the pressure control means 22 is opened or closed or the opening degree is adjusted to adjust the shipping speed of the liquid cargo so that the upper internal pressure of the loading pipe 12 is the vapor pressure of the liquid cargo. It can be maintained above.
- bypass pipe 14 is opened by opening the bypass valve 24 installed in the bypass pipe 14 according to the present embodiment. Shipment operation can be continued through the), and because the diameter of the bypass pipe 14 is smaller than the diameter of the loading pipe 12, it is possible to reduce the risk of the cavity occurring at the top of the loading pipe.
- FIG. 4 is a schematic configuration diagram of a liquid cargo evaporation preventing system according to a fourth preferred embodiment of the present invention.
- the liquid cargo has a supply pipe 11 extending substantially horizontally from the top of the storage tank 1, and downward from the supply pipe 11 toward the bottom of the storage tank 1. It is supplied to the storage tank 1 from the supply source of the land plant, FPSO and the like through the extended load pipe 12 is shipped.
- the pressure control means 22 installed in the lower portion of the loading pipe 12 and the storage tank 1 are stored in the storage tank 1.
- the bypass pipe 14 is provided, and the bypass valve 14 is installed in the bypass pipe 14 to regulate the flow of the liquid cargo through the bypass pipe 14.
- the water level measuring device 31 as the sensing means is arranged at a position spaced apart from the position where the pressure control means 22 is installed, and can be installed on the upper end of the storage tank 1, for example.
- the liquid cargo evaporation preventing system includes the water level measuring device 31 for measuring the level of the liquid cargo stored in the storage tank 1 as the sensing means. Since it is different from the liquid cargo evaporation prevention system which concerns on this, the same structure is attached
- the system according to the present invention installs a separate valve (not shown) upstream of the pressure control means 22 in the loading pipe 12 and closes the separate valve during maintenance of the pressure control means 22. Can be modified to facilitate the operation.
- This 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)
Abstract
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016540820A JP6244030B2 (ja) | 2013-09-06 | 2014-09-05 | 船舶の液体貨物蒸発防止システム及び方法 |
CN201480060485.1A CN105705414A (zh) | 2013-09-06 | 2014-09-05 | 用于防止船中的液体货物蒸发的系统和方法 |
SG11201601704SA SG11201601704SA (en) | 2013-09-06 | 2014-09-05 | System and method for preventing liquid cargo in ship from evaporating |
EP14841703.3A EP3042844B1 (fr) | 2013-09-06 | 2014-09-05 | Système et procédé pour empêcher l'évaporation d'une cargaison liquide dans un navire |
ES14841703T ES2715670T3 (es) | 2013-09-06 | 2014-09-05 | Sistema y método para evitar la evaporación de una carga líquida en un barco |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2013-0107139 | 2013-09-06 | ||
KR1020130107139A KR101408347B1 (ko) | 2013-09-06 | 2013-09-06 | 선박의 액체화물 증발방지 시스템 및 방법 |
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WO2015034331A1 true WO2015034331A1 (fr) | 2015-03-12 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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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 |
Country Status (7)
Country | Link |
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EP (1) | EP3042844B1 (fr) |
JP (1) | JP6244030B2 (fr) |
KR (1) | KR101408347B1 (fr) |
CN (1) | CN105705414A (fr) |
ES (1) | ES2715670T3 (fr) |
SG (1) | SG11201601704SA (fr) |
WO (1) | WO2015034331A1 (fr) |
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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 |
JP2022071534A (ja) * | 2020-10-28 | 2022-05-16 | 三菱造船株式会社 | 浮体、液化二酸化炭素の積込方法、液化二酸化炭素の揚荷方法 |
WO2023079638A1 (fr) | 2021-11-04 | 2023-05-11 | 三菱造船株式会社 | Navire |
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KR20090123742A (ko) * | 2008-07-16 | 2009-12-02 | 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 |
KR20120139385A (ko) * | 2011-06-17 | 2012-12-27 | 삼성중공업 주식회사 | 액상화물 저장 탱크의 휘발성 유기 화합물 저감 장치 |
KR20130000223A (ko) * | 2011-06-22 | 2013-01-02 | 삼성중공업 주식회사 | 액상화물 저장 탱크의 휘발성 유기 화합물 저감 장치 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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NO315417B1 (no) | 2001-12-06 | 2003-09-01 | Knutsen Oas Shipping As | Fremgangsmåte og anordning ved lastekolonne |
-
2013
- 2013-09-06 KR KR1020130107139A patent/KR101408347B1/ko active IP Right Grant
-
2014
- 2014-09-05 WO PCT/KR2014/008428 patent/WO2015034331A1/fr active Application Filing
- 2014-09-05 ES ES14841703T patent/ES2715670T3/es active Active
- 2014-09-05 CN CN201480060485.1A patent/CN105705414A/zh active Pending
- 2014-09-05 EP EP14841703.3A patent/EP3042844B1/fr active Active
- 2014-09-05 JP JP2016540820A patent/JP6244030B2/ja active Active
- 2014-09-05 SG SG11201601704SA patent/SG11201601704SA/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20090123742A (ko) * | 2008-07-16 | 2009-12-02 | 대우조선해양 주식회사 | 원유 운반선의 휘발성 유기화합물 저감 시스템 및 방법 |
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 |
KR20120139385A (ko) * | 2011-06-17 | 2012-12-27 | 삼성중공업 주식회사 | 액상화물 저장 탱크의 휘발성 유기 화합물 저감 장치 |
KR20130000223A (ko) * | 2011-06-22 | 2013-01-02 | 삼성중공업 주식회사 | 액상화물 저장 탱크의 휘발성 유기 화합물 저감 장치 |
Also Published As
Publication number | Publication date |
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ES2715670T3 (es) | 2019-06-05 |
CN105705414A (zh) | 2016-06-22 |
JP6244030B2 (ja) | 2017-12-06 |
JP2016536209A (ja) | 2016-11-24 |
KR101408347B1 (ko) | 2014-06-17 |
EP3042844A4 (fr) | 2017-04-26 |
EP3042844A1 (fr) | 2016-07-13 |
SG11201601704SA (en) | 2016-04-28 |
EP3042844B1 (fr) | 2019-02-06 |
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