EP1681231A1 - Ladung-und -Entladungssystem - Google Patents

Ladung-und -Entladungssystem Download PDF

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Publication number
EP1681231A1
EP1681231A1 EP06100264A EP06100264A EP1681231A1 EP 1681231 A1 EP1681231 A1 EP 1681231A1 EP 06100264 A EP06100264 A EP 06100264A EP 06100264 A EP06100264 A EP 06100264A EP 1681231 A1 EP1681231 A1 EP 1681231A1
Authority
EP
European Patent Office
Prior art keywords
hydrocarbon
tanks
inflow
outflow line
vessel
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.)
Withdrawn
Application number
EP06100264A
Other languages
English (en)
French (fr)
Inventor
Jeroen Lusthof
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.)
Sea of Solutions BV
Original Assignee
Sea of Solutions BV
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 Sea of Solutions BV filed Critical Sea of Solutions BV
Priority to EP06100264A priority Critical patent/EP1681231A1/de
Publication of EP1681231A1 publication Critical patent/EP1681231A1/de
Withdrawn legal-status Critical Current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 
    • 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
    • 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 
    • B63B11/00—Interior subdivision of hulls
    • B63B11/04—Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls

Definitions

  • the invention relates to a loading and offloading system on a vessel comprising a hull and within said hull a number of cylindrical tanks.
  • a tanker comprising a number of cylindrical tanks is described in WO 00/73134.
  • the structural integration with the hull of the vessel may lead to fatigue problems during the service life of the vessel.
  • partially filled tanks may lead to sloshing of the contents and relatively high mechanical loads on the tanks.
  • the atmosphere above the hydrocarbon in the tank is formed by an inert gas, which prevents explosive mixtures to be formed in order to reduce the risk of explosions. Furthermore, the loading level of the tanks will determine the draft of the vessel, which may vary.
  • each tank having a first and a second opening and respective valves closing each opening, wherein the tanks are supported by a support structure in the hull, the first openings of the tanks being connected to a hydrocarbon inflow/outflow line, the second openings of the tanks being connected to a displacement fluid inflow/outflow line, at least one pump being connected to the displacement fluid inflow/outflow and/or to the hydrocarbon inflow/outflow line, a control means being connected to the at least one pump and to the valves for controlling:
  • the tanks are formed by separate units that are supported within the hull, they do not contribute to the structural integrity of the vessel in a significant manner.
  • the hull can hence be constructed in a more light-weight manner without a reduction in safety of containment. Pressure fluctuations inside the tanks will not cause any bending stresses in the hull.
  • the tanks are formed by cylindrical tanks with spherical end faces to form a pressure vessel. A single layer hull will suffice to provide a reliable containment. Upon construction or during change-out and repair, the tanks can be separately installed, replaced and/or serviced.
  • the level to which the tanks are filled is substantially constant.
  • the displacement fluid such as for instance sea water
  • a substantially constant draft can be achieved. This is particularly advantageous in case the vessel is moored to the sea bed, and is attached to a sub sea well via a hydrocarbon riser, such as in case of an FPSO.
  • a heat insulating material is present at the interface of the hydrocarbon and the expulsion fluid.
  • the hydrocarbon is formed by oil, which is transported upward from a sub sea oil well, and the fluid is formed by sea water
  • the oil may have a temperature of for instance 65°C, whereas the sea water is about 10°C.
  • a movable separating member may be situated in each tank, at the interface of the hydrocarbon and the displacement fluid, of substantially equal size and shape as the cross-section of tank.
  • Such an insulating member has a further advantage that oil-water mixing at the interface is reduced.
  • the tanks are connected in groups, for instance of 10 tanks each, to a manifold for admission and removal of oil and water.
  • the tanks may have other shapes than cylindrical, such as spherical or rectangular, and may be supported in a honeycomb structure or a rectangular matrix, such as a space frame structure.
  • FIG. 1 shows a vessel (1), such as an FPSO, comprising a hull 3 with a number of cylindrical tanks 4,5.
  • the vessel 1 comprises a turret 7 which is anchored to the seabed 8 via anchor lines 9.
  • the hull 3 can weathervane around the turret 7 depending on the wind and current directions.
  • a hydrocarbon riser 11 is connected to a sub sea hydrocarbon well 13, such as an oil well. Oil is for instance transferred from the well 13 to the tanks 4, 5, via a swivel 15 which connects product piping on the vessel with the geostationary riser on the turret 7.
  • the oil can via the oil inflow/outflow line 17 and the valves 18, 19 be transported into and out of the tanks 4, 5.
  • sea water can be pumped into and out of the tanks 4,5 via valves 23,25.
  • the pump 21 and the valves 18,19,23,25 are controlled by a control unit 27, such as a computer, which is attached via electrical or electro-optical cables 29, 30, 31 to the pump 21 and to valves 18-25.
  • Figure 2 shows a number of tanks 4, 5 placed on a grid of stiffener beams 33 which provide a hull reinforcement in the longitudinal and in the transverse directions.
  • the tanks are connected via a top manifold 35 to main transport ducts 37, and at the bottom to main transport ducts 39.
  • a top grid structure 40 is situated over the tanks 4, 5 and carries the deck 41, below which the manifolding 35 and the main transport ducts 37 are situated.
  • Figure 4a shows at the tank 4 after offloading, wherein the majority of the tank is filled with seawater 47.
  • a separator such as a circular floater 42, separates the oil 45 from the seawater 47.
  • the water 47 is removed via valves 23, and the oil is admitted via valves 18.
  • oil is removed via valves 18, and water is admitted via valves 23.
  • control unit 27 is seen, controlling the pump 21 and the valves 18 and 23.
  • Two level sensors 49,50 are connected to the control unit 27 for providing input to the control unit about the level of oil and water in the tank 4.
  • a tank radar transducer 51 is coupled to the control unit 27 for providing a position control signal of the floater 42 in the tank.
  • tilting of the vessel does not result in any sloshing of liquids in the tank 4.
  • figure 5 shows a group 60 of ten tanks, which have a common loading/offloading duct 61 for hydrocarbons 61 and a common supply and discharge line 62 for seawater, which is taken in from the sea via seawater inlet chests 64,65 in the hull of the vessel 1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP06100264A 2005-01-14 2006-01-12 Ladung-und -Entladungssystem Withdrawn EP1681231A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06100264A EP1681231A1 (de) 2005-01-14 2006-01-12 Ladung-und -Entladungssystem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05075104 2005-01-14
EP06100264A EP1681231A1 (de) 2005-01-14 2006-01-12 Ladung-und -Entladungssystem

Publications (1)

Publication Number Publication Date
EP1681231A1 true EP1681231A1 (de) 2006-07-19

Family

ID=36169218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06100264A Withdrawn EP1681231A1 (de) 2005-01-14 2006-01-12 Ladung-und -Entladungssystem

Country Status (1)

Country Link
EP (1) EP1681231A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982838A1 (fr) * 2011-11-23 2013-05-24 Stx France Sa Navire pourvu d'une zone de transfert d'un produit liquide potentiellement dangereux

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757813A (en) * 1971-07-21 1973-09-11 N Levenberg Apparatus for transportation and segregated emptying of vessels containing fluids of different density
US4446804A (en) * 1980-07-08 1984-05-08 Moss Rosenberg Verft A/S Method of transporting oil and gas under high pressure in tanks on board a ship
DE3403912A1 (de) * 1984-02-04 1985-08-08 Johann Heinrich St. Wolfgang Saueressig Wasserfahrzeug mit verbesserter stabilitaet nach tankleerung
WO2000073134A1 (en) 1999-05-26 2000-12-07 Keehan Donald J Maritime chemical tanker having composite tanks

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757813A (en) * 1971-07-21 1973-09-11 N Levenberg Apparatus for transportation and segregated emptying of vessels containing fluids of different density
US4446804A (en) * 1980-07-08 1984-05-08 Moss Rosenberg Verft A/S Method of transporting oil and gas under high pressure in tanks on board a ship
DE3403912A1 (de) * 1984-02-04 1985-08-08 Johann Heinrich St. Wolfgang Saueressig Wasserfahrzeug mit verbesserter stabilitaet nach tankleerung
WO2000073134A1 (en) 1999-05-26 2000-12-07 Keehan Donald J Maritime chemical tanker having composite tanks
US6167827B1 (en) * 1999-05-26 2001-01-02 Guaranteed Advanced Tank Technologies International Ltd. Maritime chemical tanker having composite tanks for storing and/or transporting liquid organic and inorganic chemicals and the like

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982838A1 (fr) * 2011-11-23 2013-05-24 Stx France Sa Navire pourvu d'une zone de transfert d'un produit liquide potentiellement dangereux
EP2597025A1 (de) * 2011-11-23 2013-05-29 Stx France S.A. Schiff, das mit einer Transferzone eines potenziell gefährlichen flüssigen Produkts ausgestattet ist
CN103129708A (zh) * 2011-11-23 2013-06-05 Stx法国股份有限公司 具有输送潜在危险液体产品区域的船舶
CN103129708B (zh) * 2011-11-23 2016-08-17 Stx法国股份有限公司 具有输送潜在危险液体产品区域的船舶

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