CN102216153B - Device for floating production of LNG and method for converting a LNG-carrier to such a device - Google Patents

Device for floating production of LNG and method for converting a LNG-carrier to such a device Download PDF

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Publication number
CN102216153B
CN102216153B CN200980146302.7A CN200980146302A CN102216153B CN 102216153 B CN102216153 B CN 102216153B CN 200980146302 A CN200980146302 A CN 200980146302A CN 102216153 B CN102216153 B CN 102216153B
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China
Prior art keywords
lng
hull
housing structure
production system
carrier
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Expired - Fee Related
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CN200980146302.7A
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Chinese (zh)
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CN102216153A (en
Inventor
L·桑内斯
T·斯科甘
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Moss Maritime AS
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Moss Maritime AS
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Publication of CN102216153A publication Critical patent/CN102216153A/en
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Expired - Fee Related legal-status Critical Current
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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 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • 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 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B83/00—Rebuilding or retrofitting vessels, e.g. retrofitting ballast water treatment systems
    • B63B83/20—Rebuilding or retrofitting vessels, e.g. retrofitting ballast water treatment systems for conversion to a different use, e.g. for converting tankers into a FPSO-FLNG units
    • 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
    • F17C2201/0128—Shape spherical or elliptical
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 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
    • F17C2205/0119—Vessel walls form part of another structure
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • 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
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a device for floating production of LNG. The device comprises a LNG carrier comprising a ship hull (12) and at least one spherical LNG storage tank (13) for storing LNG, a projecting hull structure (16) fixed to the ship hull (12), a LNG production system (17) for converting natural gas to LNG, where the LNG production system is arranged in the projecting hull structure (16) and means for transferring LNG from the LNG production system (17) to the at lest one spherical LNG storage tank (13). The invention also relates to a method for converting an LNG-carrier to a device for floating production of LNG.

Description

The unsteady method of producing the device of LNG and the LNG carrier being transform as to this device
Technical field
The present invention relates to the device of a kind of unsteady production LNG and the LNG carrier is transform as to the method for the device of producing LNG of floating.
Background technology
For natural fuels being transported to remote market, combustion gas can be converted to the LNG(liquefied natural gas), and utilize the LNG carrier to transport at sea.So far, the whole world has been built up and has been surpassed 280 carriers.Due to cargo temperature low (163 °), therefore the goods containment system on the LNG carrier is complex structure and the high equipment of cost.For many years, the cost of sizable effort with optimization technique and minimizing LNG carrier containment system made in designer and shipbuilding yard.
LNG carrier market already and will be continued by two kinds of containment system designs fully leading, Moss spherical tank (Moss spherical tank) and film design (membrane design).
In recent years, propose to create the concept of the LNG pay unit that floats, be commonly referred to " FLNG unit " or " FLNG ".Provide this unit to produce for coastal waters LNG.Compare the equipment needed a considerable number of on the FLNG unit with LNG carrier design.Because the hull on the LNG carrier and LNG holding vessel are optimised in order to transport LNG, in the situation that have no significant effect the design of hull and/or LNG holding vessel, it may be difficulty or or even impossible that the LNG production facilities is installed.For this challenge, the FLNG concept has been proposed, the LNG holding vessel design of FLNG is different from prevailing Moss and film design.The construction of these interchangeable systems is compared and is had extra the risk and cost with main LNG carrier design.
Therefore, the purpose of this invention is to provide a kind of system and method for producing LNG for floating, this system directly has benefited from the LNG carrier.In addition, the purpose of this invention is to provide a kind of for the LNG carrier being transform as to device that float to produce LNG.
Summary of the invention
The present invention relates to a kind of device of producing LNG for floating, this device comprises:
The LNG carrier, this LNG carrier comprises hull and at least one is for storing the spherical LNG holding vessel of LNG;
Outstanding housing structure, this outstanding housing structure is fixed in described hull;
The LNG production system, this LNG production system is for being LNG by Natural Gas Conversion, described LNG production system is arranged in described outstanding housing structure;
Instrument, this instrument is for being transported to described at least one spherical LNG holding vessel by LNG from described LNG production system.
According to an aspect of the present invention, a plurality of elements of LNG production system are arranged in described hull.
According to an aspect of the present invention, described housing structure is fixed in the outer surface of the housing of LNG carrier.
According to an aspect of the present invention, described hull and described housing structure are integrative-structures.
According to an aspect of the present invention, described housing structure is welded in described hull.
According to an aspect of the present invention, the upper surface of described housing structure is substantially concordant with the main deck of described LNG carrier.
According to an aspect of the present invention, described housing structure is arranged on the top of the horizontal surface of described hull.
According to an aspect of the present invention, described device comprises from external source and receives the instrument of natural fuels and for the instrument to described LNG production system by natural gas transport.
According to an aspect of the present invention, described housing structure is water tightness.
According to an aspect of the present invention, described housing structure comprises buoyancy compartment.
According to an aspect of the present invention, described housing structure and described LNG production system are used for being retrofitted to described LNG carrier.
The invention still further relates to for the LNG carrier being transform as to the method for the device for float producing LNG, described LNG carrier comprises that hull and at least one are for storing the spherical LNG holding vessel of LNG, and wherein said method comprises the following steps:
-hull of the described LNG carrier with outstanding housing structure is provided;
-described LNG production system is set in described outstanding housing structure;
-described LNG production system is connected to described at least one spherical LNG holding vessel.
According to an aspect of the present invention, described method comprises the outer surface that described housing structure is fixed to described hull.
According to an aspect of the present invention, described method comprises described housing structure is welded to described hull.
According to an aspect of the present invention, described method comprises the described housing structure of described hull and described LNG production system is retrofitted to hull.
According to an aspect of the present invention, described method comprises the horizontal top that described housing structure is arranged on to hull.
The accompanying drawing explanation
Below with reference to the accompanying drawings, as follows:
Fig. 1 is the planar view with typical Moss type LNG carrier of four spherical LNG tanks;
The planar view of the FLNG unit that Fig. 2 is the LNG carrier based in Fig. 1;
The cross sectional drawing of the different embodiments that Fig. 3 a and Fig. 3 b are the FLNG unit;
The replaceable embodiment that Fig. 4 is Fig. 2, also shown a plurality of members of LNG production system.
The specific embodiment
Fig. 1 has illustrated the general layout of typical Moss type LNG carrier 1.Described LNG carrier 1 is for storing LNG.Described LNG carrier 1 comprises hull 2 substantially, is provided with spherical LNG holding vessel 3 in hull 2.Described LNG carrier 1 is known in those skilled in the art, will not be described in detail herein.In the specific embodiment shown in Fig. 1, described LNG carrier 1 comprises 4 spherical LNG holding vessels 3.
With reference now to Fig. 2,, Fig. 2 has illustrated that the present invention is FLNG as the device 11(that produces LNG for floating).As shown in Figure 1, described device comprises LNG carrier 1, and this LNG carrier 1 comprises hull 12 and for storing at least one spherical LNG holding vessel 13 of LNG.
Can utilize described device 11 as the substantially static floating element that anchors to sea bed or fixed by DP; Natural fuels is converted to LNG on device 11, and uses tank 13 to store as interim.Like this, by other carriers of filling the LNG tank from installing 11 tank 13, LNG is transported to market.But, install 11 propulsion systems (propulsion system) 14 that also may comprise for delivery of LNG.
Described device or FLNG11 also comprise outstanding housing structure 16, and this housing structure 16 is fixed to described hull 12.Described outstanding housing structure 16 means so-called side of a ship platform structure (sponson structure), and side of a ship platform structure is for describing the term of the outstanding structure from the side of ship.Side of a ship platform structure 16 can be fixed to the outer surface of the housing of hull, and for example, side of a ship platform structure can be soldered to hull 12.Therefore, side of a ship platform structure 16 is applicable to reequip existing LNG ship.
Hull 12 and side of a ship platform structure 16 can also be set to integrative-structure, for example, if whole FLNG is constructed to new construction.
As shown in Fig. 2, Fig. 3 a and Fig. 3 b, side of a ship platform structure 16 comprises two such structures, and every side of hull 12 (starboard side and port side) has a side of a ship platform structure.
As shown in Figure 3 a and Figure 3 b shows, the upper deck of side of a ship platform structure 16 can be positioned at identical height with the main deck of hull.In Fig. 3 a, show that side of a ship platform structure 16 is arranged on the top of the horizontal plane A of hull 12.Therefore, side of a ship platform structure 16 can be retrofitted to the LNG carrier, and whole retrofit process need to not carried out at dry harbour.
But, side of a ship platform structure 16 also can be set, make side of a ship platform structure 16 completely or partially be positioned at the below of horizontal plane A, as shown in Fig. 3 b.
Side of a ship platform structure 16 can be water tightness.Therefore, when pulling the plug, side of a ship platform structure 16 contributes to buoyancy and the calm water stability of FLNG.
Should be noted that the horizontal plane A of pointing out in Fig. 3 a does not store the ship of LNG for LNG holding vessel 13.When canned year LNG, side of a ship platform structure 16 pulls the plug part usually, thereby contributes to above-mentioned buoyancy and calm water stability.
Device or FLNG11 also comprise for the LNG production system 17 that is LNG by Natural Gas Conversion.This LNG production system 17 is arranged in outstanding housing structure 16.But if, suitable, a plurality of elements of LNG production system 17 can also be arranged in hull 12.Should be noted that term " in " use herein.But it is first-class that those skilled in the art should know that the different elements of LNG production system 17 can be arranged in the deck of housing structure 16, hull 12, housing structure 16 or hull 12, or any place that is applicable to arrange this equipment.
Device or FLNG11 also comprise for LNG is transported to the instrument (not shown) of at least one spherical LNG holding vessel 13 from LNG production system 17.In addition, installing 11 can also comprise from external source and receive the instrument of natural fuels and the instrument to LNG production system 17 for processing transport gas.
Because housing structure 16 does not affect hull 12, LNG holding vessel etc. substantially, housing structure 16 and LNG production system 17 are suitable for and are retrofitted on the LNG carrier.
With reference now to Fig. 4,, wherein a plurality of members of LNG production system 17 are by referring to below with reference to mark:
-17a-17b means compression module
-17c means the combustion gas pre-processing module, for cleaning the combustion gas from external source
-17d means pipe support
-17e means the liquefaction module for liquefaction gas
-17f means the refrigerating module for cooling purpose
-17g-17h also means respectively liquefaction module and refrigerating module
Those skilled in the art know these members, will be not described in detail here.
In housing structure 16, void space (void space), ballast chamber (water ballast tank) can also be set or for the tank that stores the liquid hydrocarbon extracted by the LNG production system etc.
To describe now side of a ship platform structure in detail.The steel structure that described side of a ship platform structure is planking (shell plating) with reinforcing and horizontal framework/bulkhead (bulkhead), be designed to like this, and side of a ship platform structure can be directly and the welding of the side of hull 12.This only has slight influence to hull 12.Side of a ship platform structure can be utilized conventional ship structural elements Design and manufacture, for example steel plate and rolling/profile of building.
The scantling (scantling) of side of a ship platform structure should be satisfied with the weight/load of fluid pressure in the equipment that can support from the top that is arranged on side of a ship platform, external sea hydraulic pressure, inner pot.Side of a ship platform structure also shows as the obvious increase of the whole longitudinal length of hull 12.
The upside of side of a ship platform structure can be set to space and the structural strength that flat ，Gai deck, deck is provided for erecting equipment.This is the main purpose of side of a ship platform, but it is also important that when side of a ship platform pulls the plug, and side of a ship platform will provide the extra calm water stability of ship, and this is to provide with LNG and produces the weight of relevant equipment and an importance of center of gravity.
The main dimension of side of a ship platform will rely on a plurality of factors, and as above side of a ship platform, for equipment, needed space is installed, the calm water stability that side of a ship platform provides, used side of a ship platform inside to store as liquid hydrocarbon and/or the possible demand of ballast chamber etc.
It should be noted that the present invention is for newly-built and reconstruction is noticeable equally, because side of a ship platform is installed, the design of hull 12 is only had to slight influence, and not impact in the design of LNG holding vessel 3.Therefore, the present invention has represented a kind of for using the opportunity of existing LNG carrier as the FLNG unit.
Side of a ship platform is can be in the dock (building dock) in shipbuilding yard upright and be installed to hull structure.But side of a ship platform can also design and be configured as this side of a ship platform when hull is floating in fitting-out quay and can be applicable to.
Side of a ship platform portions is built, and rises to final position by harbour crane (shore crane) or Floating Crane (floating crane).In order to simplify upright process, the floating prolongation of side of a ship platform is limited in the planar side zone of main body as much as possible.
Also provide a kind of for the LNG carrier being transform as to the method for the device of producing LNG for floating.As mentioned above, the LNG carrier comprises hull 12 and at least one is for storing the spherical LNG holding vessel of LNG.Said method comprising the steps of:
-hull 12 of the LNG carrier with outstanding housing structure is provided;
-in described outstanding housing structure, LNG production system 17 is set;
-described LNG production system 17 is connected to at least one spherical LNG holding vessel.
Described method can also comprise the step that housing structure 16 is fixed to the outer surface of hull 12.
Described method further can comprise the step that housing structure 16 is welded to described hull 12.
Described method can also comprise the step that the housing structure of hull 16 and LNG production system 17 is retrofitted to hull 12.
Described method can also comprise the step that housing structure 16 is arranged on to the horizontal top of hull 12.
During specification sheets above reading, for a person skilled in the art, more revise and be out of shape obviously.Scope of the present invention manifests from being equal to of following claim and they.

Claims (16)

1. a device that float to produce LNG, this device comprises:
The LNG carrier, this LNG carrier comprises hull (12) and at least one is for storing the spherical LNG holding vessel (13) of LNG;
Outstanding housing structure (16), this outstanding housing structure (16) is fixed in described hull (12);
LNG production system (17), this LNG production system (17) is for being LNG by Natural Gas Conversion, described LNG production system (17) is arranged in described outstanding housing structure (16);
Instrument, this instrument is for being transported to described at least one spherical LNG holding vessel (13) by LNG from described LNG production system (17).
2. device according to claim 1, wherein, a plurality of elements of described LNG production system (17) are arranged in described hull (12).
3. device according to claim 1, wherein, described housing structure (16) is fixed in the outer surface of the housing of LNG carrier.
4. device according to claim 1, wherein, described hull (12) and described housing structure (16) are integrative-structures.
5. device according to claim 1, wherein, described housing structure (16) is welded in described hull (12).
6. device according to claim 1, wherein, the upper surface of described housing structure (16) is substantially concordant with the main deck of LNG carrier.
7. device according to claim 1, wherein, described housing structure (16) is arranged on the top of the horizontal surface of described hull (12).
8. device according to claim 1, wherein, described device comprises for receiving the instrument of natural fuels from external source and for the instrument to LNG production system (17) by natural gas transport.
9. device according to claim 1, wherein, described housing structure (16) is water tightness.
10. device according to claim 1, wherein, described housing structure (16) comprises buoyancy compartment.
11. install according to claim 1, wherein, described housing structure (16) and described LNG production system (17) are used for being retrofitted to described LNG carrier.
12. one kind for the LNG carrier being transform as to the method for the device for float producing LNG, described LNG carrier comprises that hull (12) and at least one are for storing the spherical LNG holding vessel (13) of LNG, and wherein said method comprises the following steps:
-hull (12) of the described LNG carrier with outstanding housing structure (16) is provided;
-LNG production system (17) is set in described outstanding housing structure (16);
-described LNG production system (17) is connected to described at least one spherical LNG holding vessel (13).
13. method according to claim 12, wherein, described method comprises the outer surface that described housing structure (16) is fixed to described hull (12).
14. method according to claim 12, wherein, described method comprises described housing structure (16) is welded to described hull (12).
15. method according to claim 12, wherein, described method comprises the described housing structure (16) of described hull (12) and described LNG production system (17) is retrofitted to described hull (12).
16. method according to claim 12, wherein, described method comprises the horizontal top that described housing structure (16) is arranged on to described hull (12).
CN200980146302.7A 2008-11-19 2009-10-28 Device for floating production of LNG and method for converting a LNG-carrier to such a device Expired - Fee Related CN102216153B (en)

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WO2010059059A1 (en) 2010-05-27

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