EP4202284A1 - Tour de chargement et de déchargement d'une cuve de stockage de gaz liquéfié - Google Patents

Tour de chargement et de déchargement d'une cuve de stockage de gaz liquéfié Download PDF

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Publication number
EP4202284A1
EP4202284A1 EP22214626.8A EP22214626A EP4202284A1 EP 4202284 A1 EP4202284 A1 EP 4202284A1 EP 22214626 A EP22214626 A EP 22214626A EP 4202284 A1 EP4202284 A1 EP 4202284A1
Authority
EP
European Patent Office
Prior art keywords
unloading
loading
tank
tower
conduit
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.)
Pending
Application number
EP22214626.8A
Other languages
German (de)
English (en)
French (fr)
Inventor
Erwan CORBINEAU
Florian BARDIN
Ahmed SRIDI
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.)
Gaztransport et Technigaz SA
Original Assignee
Gaztransport et Technigaz SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gaztransport et Technigaz SA filed Critical Gaztransport et Technigaz SA
Publication of EP4202284A1 publication Critical patent/EP4202284A1/fr
Pending legal-status Critical Current

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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 
    • 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
    • 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
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • 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
    • B63B27/30—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
    • 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
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0103—Exterior arrangements
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • 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
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • 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
    • F17C2205/0352—Pipes
    • F17C2205/0367—Arrangements in parallel
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F17C2223/047—Localisation of the removal 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
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0171—Arrangement
    • F17C2227/0178—Arrangement in 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • 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
    • F17C2260/02—Improving properties related to fluid or fluid transfer
    • 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
    • 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
    • F17C2270/0107—Wall panels

Definitions

  • the present invention relates to the field of storage and/or transport of a cargo of liquefied gas, such as liquefied natural gas, liquid ammonia or even liquefied petroleum gas. More particularly, the invention relates to an assembly for loading and unloading a liquefied gas storage tank.
  • a cargo of liquefied gas such as liquefied natural gas, liquid ammonia or even liquefied petroleum gas. More particularly, the invention relates to an assembly for loading and unloading a liquefied gas storage tank.
  • Liquefied natural gas commonly known by the acronym “LNG”, or also by the acronym “LNG” for "Liquefied Natural Gas”
  • LNG Liquefied Natural Gas
  • the LNG is stored in the liquid state in a thermally insulated tank at a temperature close to -160°C, the LNG then occupying 1/600 of the volume that it would occupy in the gaseous state, thus making it possible to facilitate transporting it from one site to another.
  • the tank comprises a loading and unloading tower suspended from a cover allowing the closure of the tank.
  • the loading and unloading tower may comprise a structure of the tripod type, that is to say comprising three vertical masts connected to each other by crosspieces forming a lattice structure, said tower being guided by a support of the tank emerging from a back wall.
  • the loading and unloading tower then comprises at least one unloading pipe and a suction element whose function is to unload the cargo from the tank, said suction element being connected to a drive device arranged outside of the tank.
  • the suction element is arranged at least partly in a sump formed in the bottom wall of the tank which makes it possible to increase the quantity of the cargo extracted. through the unloading conduit while ensuring the immersion of the suction element in said cargo, thus preserving its integrity
  • the invention therefore relates to an assembly for loading and unloading a storage tank for a liquefied gas
  • the loading and unloading assembly comprising at least one loading tower, an unloading device and at least one cover intended to close a storage volume of the tank and crossed at least in part by the loading tower and by the unloading device
  • the loading tower comprising a structure comprising at least three masts and a loading duct
  • the unloading device comprising at least one unloading duct, a suction element arranged at a first end of the unloading duct and a drive assembly arranged at a second end of the unloading duct, the cover being arranged between the suction element and the drive assembly
  • the loading and unloading assembly being characterized in that the unloading conduit of the unloading device is separate from the masts of the structure of the loading tower and is arranged outside a delimited perimeter by said loading tower structure.
  • the storage tank can be arranged on a floating structure and comprises at least a ceiling wall and a bottom wall interconnected by side walls.
  • the walls of the tank include in particular at least one layer of thermal insulation covered by a corrugated waterproof membrane, capable of deforming according to the thermal variations of the tank.
  • An opening is then formed in the ceiling wall so as to accommodate the loading and unloading assembly. It is understood in particular that the cover of the loading and unloading assembly closes the opening of the ceiling wall of waterproof way.
  • the loading tower is guided by a support, at least a part of which passes through the bottom wall in order to anchor said loading tower in the tank.
  • the perimeter delimited by the structure of the loading tower corresponds to an axial projection of the structure of the loading tower on the bottom wall of the vessel.
  • the perimeter is delimited by the outer edges of each of the masts, that is to say by circular portions of the masts positioned furthest outside of the structure.
  • the unloading duct which extends between the suction element and the drive assembly is separate from the mast of the structure, between these two components.
  • the unloading conduit from one of its ends to the other is outside the mast.
  • two of the masts of the structure of the loading tower form two rear masts and a third mast of the structure forms a front mast, the unloading duct extending opposite any of the two rear masts in relation to the front mast of the structure. It is understood here that the unloading duct is in front of the front mast of the structure.
  • At least one holding device extends between the unloading duct and one of the masts of the structure.
  • the structure delimits a substantially triangular perimeter comprising at least one base defined by a straight line joining the two rear masts and a front top defined by the front mast, the holding device extending between the unloading and the front mast of the structure forming the front peak of the perimeter of said structure.
  • the substantially triangular perimeter delimited by the structure of the loading tower comprises three vertices each corresponding to one of the masts of said structure, the two vertices corresponding to the two rear masts then participating in defining the base while the corresponding vertex to the foremast participating in defining the fore peak.
  • the top of the perimeter of the structure and the unloading duct are aligned along a height of the substantially triangular perimeter of the structure.
  • a height is a straight line perpendicular to the base and passing through the front vertex.
  • the invention also relates to a tank for storing and/or transporting a liquefied gas comprising at least one loading and unloading assembly according to any one of the preceding characteristics, said tank comprising a bottom wall, a ceiling and side walls connecting the bottom wall to the ceiling wall, said walls delimiting the storage volume of the liquefied gas.
  • the loading duct extends between one of the side walls of the tank and the unloading duct.
  • the drive assembly of the unloading device is arranged outside the storage volume of said tank and the suction element of the unloading device is arranged in the storage volume of the tank. .
  • a drive shaft connects the suction element to the drive assembly. It is understood in particular that the drive assembly allows the actuation of the suction element by means of the drive shaft.
  • the unloading duct is arranged opposite the side wall closest to the structure, with respect to said structure.
  • the closest wall can for example be a front side wall and a rear side wall of the tank.
  • a front and a rear of the floating structure carrying the tank are defined, the front and the rear being defined with respect to a standard direction of advancement of said floating structure.
  • the unloading duct corresponds to the duct furthest forward with respect to the structure and the loading duct.
  • At least one front side wall and one rear side wall of the tank are defined, following the standard direction of advancement of the floating structure, the unloading conduit being arranged opposite the rear side wall of the tank. , with respect to the structure. This is particularly the case when the structure is closer to the rear wall.
  • the unloading duct is arranged opposite the front side wall of the tank, with respect to the structure. This is particularly the case when the structure is closer to the front wall.
  • the tank comprises at least one sump formed in the bottom wall of the tank, the suction element extending at least partly into the sump.
  • the sump corresponds in particular to a recess formed in the volume of the bottom wall of the tank, delimited by a sump wall and making it possible to optimize the unloading of the liquid cargo. More particularly, the sump makes it possible to facilitate the suction of the liquid cargo by the suction element by collecting and concentrating the liquid cargo in a reduced volume compared to the storage volume of the tank.
  • the tank comprises a support for the loading tower which passes through the bottom wall, the sump being formed such that a center of the latter is at a distance at least greater than 2.04 m from a center of said loading tower support.
  • the distance is taken along a straight line perpendicular to a direction of main elongation of the loading tower, which connects the center of the support of the loading tower and the center of the sump.
  • a center of the unloading duct is positioned at any point of a semicircle centered on the center of the support.
  • center of the support corresponds to a point disposed substantially equidistant from a center of the three masts of the structure of the loading duct.
  • the ceiling wall comprises an opening in which the lid is arranged so as to close the storage volume of the tank.
  • FIG. 1 illustrates a floating structure 1 corresponding here to a ship 1 for transporting a liquefied gas.
  • the ship 1 comprises at least one tank 2 for storing and/or transporting the liquefied gas comprising at least one bottom wall and one ceiling wall, here not visible and opposite one another. another in a vertical direction of the tank 2, said walls being connected to one another by side walls 4.
  • the bottom wall, the ceiling wall and the side walls 4 participate among other things in delimiting a storage volume 6 liquefied gas.
  • the walls 4 of the latter comprise at least one thermal insulation layer, not visible, covered by a corrugated waterproof membrane 8, visible to figure 3 And 4 , and intended to be in contact with the liquefied gas.
  • the corrugated waterproof membrane 8 notably comprises a plurality of corrugations 8a allowing it to resist the deformations generated by thermal variations of the tank 2, for example during its refrigeration of the tank 2 prior to its filling with the liquefied gas.
  • the storage and/or transport tank 2 comprises at least one loading and unloading assembly 10 according to the invention making it possible to introduce or withdraw the liquefied gas into or outside the tank 2.
  • the loading and unloading assembly unloading 10 visible to figure 1 And 2 , comprises at least one loading tower 12, an unloading device 14 and at least one lid 16 intended to close the storage volume 6. More particularly, the ceiling wall comprises an opening in which the lid 16 is arranged so as to close the storage volume 6 of the tank 2 tightly. As seen at picture 2 , the cover 16 is at least partly crossed by the loading tower 12 and by the unloading device 14.
  • the loading tower 12 particularly visible at the figure 2 , comprises a structure 18 which extends along a main direction of elongation P vertical V, comprising at least three masts 20, or otherwise called a tripod, and a loading duct 22. More specifically, the structure 18 of the tower loading 12 comprises the at least three masts 20 secured to each other by means of a lattice structure 24, each of the three masts 20 passing through the cover 16 of the tank 2. A front mast 20a of the structure 18 is then defined and two aft masts 20b of the structure 18, defined according to a direction of advancement A of the ship 1, visible at the figure 1 , under normal sailing conditions, the foremast 20a being the mast 20 of the structure 18 furthest forward in tank 2.
  • the structure 18 of the loading tower 12 is supported by a support 26 which crosses at least partly the bottom wall 28 of the tank 2. More specifically, the support 26 comprises at least one platform 30 secured to each of the masts 20 of the structure 18 of the loading tower 12 and a foot 32 which extends from an external structure of the tank 2, not visible, and up to the platform 30, crossing the bottom wall 28 of said tank 2.
  • the loading duct 22 of the loading tower 12, visible to figures 1 to 4 is separate from the masts 20 of the structure 18 and extends through the cover 16 to the vicinity of the bottom wall 28, such that a free end 34 of said loading conduit 22, shown in dotted lines figure 4 because behind the front mast 20a in this view, i.e. at a non-zero distance from said bottom wall 28 in the vertical direction V of the tank 2. It is understood that such a distance between the free end 34 of the loading duct 22 which extends into the storage volume 6 and the bottom wall 28, allows the liquefied gas to flow through said free end 34.
  • the unloading device 14 comprises at least one unloading duct 36, a suction element 38 disposed at a first end 40 of the unloading duct 36, visible to the figure 3 And 4 , and a drive assembly 42 disposed at a second end 44 of the unloading duct 36, visible at the figure 2 .
  • the cover 16 is arranged between the suction element 38 and the drive assembly 42. More specifically, the suction element 38 is arranged in the storage volume 6 of the tank 2 while the drive assembly 42 is arranged outside the storage volume 6 of the tank 2.
  • At least one drive shaft 46 partly visible at the figure 4 , connects the suction element 38 to the drive assembly 42. More particularly, the drive shaft 46 extends in an internal volume of the discharge conduit 36 and allows the suction element 38 to be actuated under the effect of the drive element 42.
  • the unloading conduit 36 of the unloading device 14 is distinct from the masts 20 of the structure 18 of the loading tower 12. More particularly, and visible at the picture 3 , a perimeter S is defined, represented schematically, delimited by the structure 18 of the loading tower 12, and corresponding to an axial projection, where vertical V, of the structure 18 of the loading tower 12 on the bottom wall 28 of the tank 2. More particularly, the perimeter S of the structure 18 is delimited by each of the masts 20 of the structure 18. The perimeter S delimited by the structure 18 passes in particular through the outer edges of each of the masts 20 of the structure 18, that is to say by circular portions of the masts 20 positioned furthest outside of said structure 18. Thus according to the invention, the unloading conduit 36 extends outside the perimeter S delimited by the structure 18 of the loading tower 12.
  • the perimeter S delimited by the structure 18 has a shape substantially triangular, each of the masts 20 of which forms one of the vertices of the perimeter S of the structure 18.
  • the perimeter S comprises at least one base 48 defined by a straight line passing through the two rear masts 20b of the structure 18 defined above and a vertex 50 defined by the front mast 20a of said structure 18, otherwise called the front top.
  • a front side wall 4a and a rear side wall 4b of the tank 2 are defined, defined according to the direction of advancement A of the vessel 1, visible at the figure 1 , under normal navigation conditions, the front side wall 4a being the forwardmost side wall 4 in the tank 2 while the rear side wall 4b being the rearmost side wall 4 in the tank 2.
  • the base 48 of the perimeter S projected onto the bottom wall 28 and delimited by the structure 18, is substantially parallel to one of the side walls of the tank 2 which extends closest to said structure 18, here the rear side wall 4b.
  • the unloading duct 36 extends opposite the rear side wall 4b with respect to the structure 18.
  • a center C of the unloading duct 36 is positioned at any point of a semicircle 52, visible at the figure 1 , centered on a center F of the support 26 of the structure 18. More specifically, the center F of the support 26 corresponds to a point located equidistant, or substantially equidistant, from a center of each of the masts 20 of said structure 18.
  • the front top 50 of the perimeter S that is to say the front mast 20a, and the unloading duct 36 are aligned along a height I of the substantially triangular perimeter S.
  • height I a straight line passing through the top 50 defined by the front mast 20a and perpendicularly intersecting the base 48 of the said perimeter S.
  • At least one holding device 54 extends between the unloading conduit 36 and one of the masts 20 of the structure 18.
  • the holding device 54 makes it possible to hold the unloading conduit 36 in the vertical direction V and ensures its holding in particular during the loading of the tank 2 or even during the transport of the liquefied gas.
  • a plurality of holding devices 54 extend between one of the masts 20 of the structure 18 and the unloading conduit 36, along the latter that is to say between its first end 40 and the lid.
  • the at least one holding device 54 extends between the unloading duct 36 and the front mast 20a of the structure 18, that is to say the mast 20 forming the front top 50 of the perimeter S of structure 18.
  • the latter comprises at least one sump 56 formed in its bottom wall 28 and particularly visible to figure 3 And 4 .
  • the sump 56 corresponds to a volume which extends in the bottom wall 28 of the tank 2 and which is delimited by a sump wall 56a, here cylindrical around an axis of revolution X.
  • the sump 56 makes it possible in particular to form a reduced volume to facilitate the collection of the liquefied gas by the suction element 38 by concentrating said liquefied gas in this reduced volume with respect to the storage volume 6 of the tank 2. It is then understood that the suction element 38 of the unloading device 14 extends at least partly into the volume of the sump 56.
  • the sump 56 is formed in the bottom wall 28 of the tank 2 such that a center X of the latter, here positioned on its axis of revolution X, is at a distance D, at least greater than 2.04 m from the center F of said support 26 of the loading tower 12. It is understood that the distance is taken along a straight line perpendicular to the axis of revolution X, between said axis of revolution X and the center F of the support 26 of the loading tower 12, taken on a central axis F of the latter. It is understood that such a distance D between the sump 56 and the support 26 makes it possible to maintain flexibility in the corrugated waterproof membrane 8 which extends nearby, said corrugated waterproof membrane 8 thus retaining its deformation properties limiting at least the risks premature wear of the latter.
  • center C of the unloading duct mentioned above is positioned at any point of the semi-circle 52, visible at the figure 1 , centered on the center F of the support 26 of the structure 18, and such that the semicircle 52 has a radius corresponding to the distance D, visible at the picture 3 , this distance being equal to or greater than 2.04m.
  • the unloading duct 36 is the element of said loading and unloading assembly 10 furthest forward in the tank 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP22214626.8A 2021-12-22 2022-12-19 Tour de chargement et de déchargement d'une cuve de stockage de gaz liquéfié Pending EP4202284A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2114275A FR3130930B1 (fr) 2021-12-22 2021-12-22 Tour de chargement et de déchargement d’une cuve de stockage de gaz liquéfié

Publications (1)

Publication Number Publication Date
EP4202284A1 true EP4202284A1 (fr) 2023-06-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22214626.8A Pending EP4202284A1 (fr) 2021-12-22 2022-12-19 Tour de chargement et de déchargement d'une cuve de stockage de gaz liquéfié

Country Status (5)

Country Link
EP (1) EP4202284A1 (ko)
JP (1) JP2023093407A (ko)
KR (1) KR20230095852A (ko)
CN (1) CN116412352A (ko)
FR (2) FR3130930B1 (ko)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018203005A2 (fr) * 2017-05-05 2018-11-08 Gaztransport Et Technigaz Procede de manutention d'une cargaison de gaz liquefie et installation de stockage
WO2019211550A1 (fr) * 2018-05-02 2019-11-07 Gaztransport Et Technigaz Cuve etanche et thermiquement isolante equipee d'une tour de chargement/dechargement
WO2019211551A1 (fr) * 2018-05-02 2019-11-07 Gaztransport Et Technigaz Cuve etanche et thermiquement isolante equipee d'une tour de chargement/dechargement
FR3089489A1 (fr) * 2018-12-11 2020-06-12 Gaztransport Et Technigaz Tour de chargement et/ou de déchargement d’une cuve d’un navire et cuve comportant une telle tour.
FR3097616A1 (fr) * 2019-06-21 2020-12-25 Gaztransport Et Technigaz Procédé d’installation d’un ensemble d’entraînement d’une pompe d’une tour de déchargement d’une cuve d’un ouvrage flottant mettant en œuvre un dispositif de réglage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3023257B1 (fr) * 2014-07-04 2017-12-29 Gaztransport Et Technigaz Cuve etanche et isolante disposee dans une double coque flottante
KR20160119343A (ko) * 2015-04-03 2016-10-13 삼성중공업 주식회사 액화가스 저장탱크 및 액화가스 배출방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018203005A2 (fr) * 2017-05-05 2018-11-08 Gaztransport Et Technigaz Procede de manutention d'une cargaison de gaz liquefie et installation de stockage
WO2019211550A1 (fr) * 2018-05-02 2019-11-07 Gaztransport Et Technigaz Cuve etanche et thermiquement isolante equipee d'une tour de chargement/dechargement
WO2019211551A1 (fr) * 2018-05-02 2019-11-07 Gaztransport Et Technigaz Cuve etanche et thermiquement isolante equipee d'une tour de chargement/dechargement
FR3089489A1 (fr) * 2018-12-11 2020-06-12 Gaztransport Et Technigaz Tour de chargement et/ou de déchargement d’une cuve d’un navire et cuve comportant une telle tour.
FR3097616A1 (fr) * 2019-06-21 2020-12-25 Gaztransport Et Technigaz Procédé d’installation d’un ensemble d’entraînement d’une pompe d’une tour de déchargement d’une cuve d’un ouvrage flottant mettant en œuvre un dispositif de réglage

Also Published As

Publication number Publication date
KR20230095852A (ko) 2023-06-29
FR3130930A1 (fr) 2023-06-23
JP2023093407A (ja) 2023-07-04
FR3130930B1 (fr) 2024-06-28
CN116412352A (zh) 2023-07-11
FR3130740A1 (fr) 2023-06-23

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