摘要:
Disclosed is a liquefied natural gas composition. The composition contains methane, ethane and propane and butane. The composition contains a substantial amount of butane while being substantially free of hydrocarbon molecules larger than butane.
摘要:
An integrated energy hub facility capable of bringing together all aspects of hydrocarbon and other fluid product movement under controlled conditions applicable to the reception, storage, processing, collection and transmission downstream is provided. Input to the energy hub includes natural gas and crude from a pipeline or a carrier, LNG from a carrier, CNG from a carrier, and carrier-regassed LNG, as well as other products from a pipeline or a carrier. Storage can be above surface, in salt caverns or in subterranean formations and cavities, and include petroleum crude, natural gas, LPG, NGL, GTL and other fluids. Transmission downstream may be carried out by a vessel or other type of carrier and/or by means of a pipeline system. Cryogenic fluids are offloaded and sent to the energy hub surface holding tank, then pumped to the energy hub vaporizers and sent to underground storage and/or distribution.
摘要:
The invention regards a tank for storing of fluid at low temperature of insulated self carrying plate structure, where the plates comprises a sandwich structure, comprising two surface sheets of a metal or a material with similar properties and a core material with properties allowing for the variation of thermal deformation between the inner and outer surface sheets, which core material also provides for at least partly the insulation of the tank and which provides at least partly the necessary stiffness and strength of the wall. The invention also regard support means for the tank, a sandwich structure for use in a tank, and a method for producing the tank.
摘要:
Methods and systems for transportation of a cryogenic fluid. The system includes a floating liquefaction unit receiving a gas from a source, a shuttle vessel for carrying liquefied gas away from the liquefaction unit, and a floating regasification unit for receiving the liquefied gas from the vessel, regassifying the liquefied gas and providing the gas to a distribution system.
摘要:
This invention relates prolonging operation duration of ambient air heated vaporizers of cryogenic fluids; and more particularly concerns a method for enhancing ice removal under such vaporizers. Ambient air vaporizers have been used in the past to convert cryogenic fluids into warm gas. Because of the very cold surfaces inherent in the construction of these vaporizers, they collect frost or ice, and are generally limited in the time they can be effective due to the reduction in heat transfer caused by the frozen atmospheric water collecting on vaporizer surfaces. Operators frequently seek to mitigate this effect by having multiple vaporizers, alternately switching units on and off, allowing them to defrost. A characteristic of these defrosting vaporizers, is the falling of the frost and ice off the heat transfer surfaces, collect at the base of the unit (the “Pile). This Pile of frozen water or slush generally can be melted by exposure to warm ambient air during the defrost cycle. The Pile also can be removed manually.
摘要:
The present invention relates to a method of treating a liquefied natural gas (LNG) stream, the method at least comprising the steps of: (a) supplying a stream comprising LNG as at least two separate streams to a vessel comprising a contacting zone, a first stream being fed above the contacting zone and a second stream being fed below the contacting zone; (b) supplying a stream comprising an inert fluid to the vessel; (c) contacting at least the first stream supplied in step (a) with the stream supplied in step (b) in the contacting zone, thereby obtaining an LNG stream being enriched in inert fluid; and (d) removing the LNG stream obtained in step (c) from the vessel.
摘要:
A device for transferring a product between a ship and a fixed installation. The device is supported at one end by a support structure and the other end is capable of being connected to the ship's manifold. The support structure includes a boom carrying a transfer pipe, rotatable about a vertical axis above the ship, and a deformable transfer device, one end of which is connected to the pipe, and the other end is mobile between a stowed position proximate the boom and a position for connection to the ship's manifold. The invention is useful for transferring liquefied natural gas.
摘要:
Substantially rectangular-shaped tanks are provided for storing liquefied gas, which tanks are especially adapted for use on land or in combination with bottom-supported offshore structure such as gravity-based structures (GBS). A tank according to this invention is capable of storing fluids at substantially atmospheric pressure and has a plate cover adapted to contain fluids and to transfer local loads caused by contact of said plate cover with said contained fluids to a grillage of stiffeners and stringers, which in turn is adapted to transfer the local loads to an internal truss frame structure. Methods of constructing these tanks are also provided.
摘要:
A sealed, thermally insulated tank consists of tank walls fixed to the load-bearing structure of a ship, the tank walls having, in succession, in the direction of the thickness from the inside to the outside of the tank, a primary sealing barrier, a primary insulating barrier, a secondary sealing barrier and a secondary insulating barrier, at least one of the insulating barriers consisting essentially of juxtaposed non-conducting elements (3), each non-conducting element including a thermal insulation liner, at least one panel and load-bearing partitions rising through the thickness of the thermal insulation liner in order to take up the compression forces. These partitions include at least one anti-buckle partition (14) that includes a plurality of anti-buckle wall elements that have a respective orientation forming an angle relative to a general longitudinal direction of the anti-buckle partition, for example forming corrugations or double-wall portions.
摘要:
Methods and systems for transportation of a cryogenic fluid. The system includes a floating liquefaction unit receiving a gas from a source, a shuttle vessel for carrying liquefied gas away from the liquefaction unit, and a floating regasification unit for receiving the liquefied gas from the vessel, regassifying the liquefied gas and providing the gas to a distribution system.