CN102242864A - Liquefied natural gas (LNG) receiving system and treatment method - Google Patents
Liquefied natural gas (LNG) receiving system and treatment method Download PDFInfo
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- CN102242864A CN102242864A CN2011100679894A CN201110067989A CN102242864A CN 102242864 A CN102242864 A CN 102242864A CN 2011100679894 A CN2011100679894 A CN 2011100679894A CN 201110067989 A CN201110067989 A CN 201110067989A CN 102242864 A CN102242864 A CN 102242864A
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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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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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
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
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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
- 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
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
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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
- F17C2225/036—Very high pressure, i.e. above 80 bars
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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
- F17C2265/033—Treating the boil-off by recovery with cooling
- F17C2265/034—Treating the boil-off by recovery with cooling with condensing the gas phase
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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
- F17C2265/05—Regasification
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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
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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
- F17C2265/068—Distribution pipeline networks
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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
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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
- F17C2270/011—Barges
- F17C2270/0113—Barges floating
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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
- F17C2270/0134—Applications for fluid transport or storage placed above the ground
- F17C2270/0136—Terminals
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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
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0171—Trucks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a liquefied natural gas (LNG) receiving system, which comprises an LNG transport ship, an LNG transport ship anchoring dock, an LNG unloading system, an LNG storage system, an LNG regasification system and an LNG transport system, wherein the LNG transport ship carries LNG to travel to and fro between the receiving system and an LNG source; the LNG transport ship anchoring dock is provided with a pipeline and used for unloading the LNG from the LNG transport ship through the LNG unloading system; the LNG unloading system is used for unloading the LNG from the transport ship to the LNG storage system through a low-temperature pipeline arranged on a terminal marine facility and the LNG transport system; the LNG is transported to the regasification system, an LNG bulk transshipping system and an LNG container transshipping system from the LNG storage system through the LNG transport system; the gasified natural gas is exported through the LNG regasification system; and the LNG transport system is arranged between the LNG storage system and the LNG receiving terminal marine facility as well as between the regasification system and the LNG storage system, and is used for transporting the liquefied gas or the regasified gas inbetween.
Description
Technical field
The present invention relates to LNG Liquefied natural gas (LNG) storaging and transport technology, more specifically, the present invention relates to a kind of LNG Liquefied natural gas receiving system and processing method.
Background technique
Use rock gas to adopt three kinds of methods to transport usually for the place beyond the source of the gas ground.First kind be by natural gas line with rock gas from source of the gas be sent to and make the land used user.Second kind is rock gas to be delivered to by water transport or land transportation in source of the gas ground liquefaction back formation LNG Liquefied natural gas (LNG) make land used, is sent to the user after land used is gasified again.The third is rock gas compression back formation compressed natural gas (CNG) to be sent to by water transport or land transportation make the land used user.
Length adopts the form of LNG Liquefied natural gas to transport apart from water transport usually at present.In conjunction with the actual conditions of China, the coastal region in east China is economically developed, and gas consumption is big, lacks source of the gas, though import by pipeline from western part, breach is still very big, need be from external marine transportation import.These rock gases be mostly with the form of LNG Liquefied natural gas by shipping to gas ground receiving terminal, through unloading, store, gasify again and be sent to the user.Fixed terminal for the land, normally the LNG cargo ship rests in quayside, and the receiving terminal of plugging into is unloaded to LNG on the LNG storage facilities by uninstalling system, by transmission system LNG is delivered to gasification installation more again, through after the gasification rock gas being sent to the user again.
The major function of at present common LNG Liquefied natural gas receiving terminal is to store and gasification again, the liquefaction weather of shipping is unloaded to receiving terminal stores, and through sending into local pipe network after the gasification again, delivers to the user by pipe network; Perhaps directly deliver to big gas user such as power plant, smelter etc.The function singleness of this receiving terminal, the user is single, and user's coverage rate is little, can't satisfy people to using many-sided needs of rock gas.Along with the increase of rock gas user types and form, LNG, CNG transhipment has been proposed the LNG Liquefied natural gas receiving terminal, to the functional requirement of aspects such as LNG fuel ship loading.
In addition, LNG Liquefied natural gas can be owing to importing into physical displacement of heat produces flashed vapour in the process of loading and unloading or storage, this flashed vapour place low-temperature condition, and daily output flash distillation tolerance is generally 0.1%-0.3%.As time goes on, flashed vapour constantly increases in storage tank, influences safety, need handle it.For the LNG Liquefied natural gas receiving terminal, common processing method is: a part of flashed vapour turns back to the LNG cabin with balance cabin internal pressure when discharging, a part is returned in the LNG storage tank after the condensation again, has unnecessary part just to burn or be discharged in the air again, not only wastes but also is unfavorable for environmental protection.
Summary of the invention
For fear of the various defectives of above-mentioned rock gas receiving terminal, the present invention proposes a kind of receiving system and processing method thereof of LNG Liquefied natural gas.
According to an aspect of the present invention, a kind of LNG Liquefied natural gas receiving system is provided, comprise: the LNG cargo ship, LNG cargo ship landing pier, LNG uninstalling system, LNG transmission system, the LNG storage system, LNG is gasification system again, the flashed vapour processing system, and the LNG movement system (comprises on transhipment waterborne and/or the road and transporting; Bulk transfer and/or container transshipment), CNG outward transport system (comprising waterborne and/or land shipping container outward transport), LNG fuel ship loading system.The LNG cargo ship is travelled to and fro between between receiving system and the LNG source of the gas ground and is delivered LNG; LNG cargo ship landing pier has pipeline and is used for coming from LNG cargo ship unloading LNG by the LNG uninstalling system; The LNG uninstalling system is used for through being located at cryogenic piping and the LNG transmission system on the terminal maritime works facility LNG being unloaded on the LNG storage system from cargo ship; The LNG storage system, LNG passes to gasification system again from storage system through the LNG transmission system, perhaps arrives LNG bulk transfer ship and LNG container transshipment ship by marine transhipment, perhaps arrives the LNG carrier loader by land transhipment; LNG is gasification system again, and the rock gas of LNG gasification is defeated outward; The LNG transmission system is arranged between LNG storage system and the LNG receiving terminal maritime works facility, and again between gasification system and the LNG storage system, is used for transmitting betwixt the liquid gas or the gas of gasification again.
According to a further aspect in the invention, a kind of LNG Liquefied natural gas receiving handling method is provided, comprise: step 1), LNG cargo ship rest in LNG cargo ship landing pier, come from LNG cargo ship unloading LNG by the LNG uninstalling system, the LNG uninstalling system is used for through being located at cryogenic piping and the LNG transmission system on the terminal maritime works facility LNG being unloaded on the LNG storage system from cargo ship; Step 2), LNG passes to gasification system or LNG transfer system in bulk or LNG shipping container transfer system from the LNG storage system through the LNG transmission system again; Step 3), LNG gasification system again are defeated outward with the rock gas of gasification; The LNG loading system of step 4), LNG storage system is loaded into the LNG cargo ship with LNG, the LNG shipping container that LNG container transshipment ship admits shipping LNG loading system to transmit, the LNG in bulk that LNG bulk transfer ship admits shipping LNG loading system to transmit, LNG land transportation device carries out land transporting with the LNG of in bulk or shipping container style.
According to a third aspect of the invention we, the method of the flashed vapour that produces in a kind of process liquefaction rock gas unloading storage is provided, comprise: the flashed vapour that in the process of discharging or storage, produces for LNG, a part turns back to the LNG cabin with balance cabin internal pressure when discharging, another part is by heating or pressure treatment to flashed vapour.The natural gas straight of heating is picked into the grid of rock gas or the form transhipment of back with CNG of boosting.
System of the present invention is applicable to the LNG receiving terminal on ground such as coastal, riverine.Along with the adjustment of China's sustainable development of economy and energy resource structure, in the year two thousand twenty natural gas consumption 51% will be from the LNG import.Therefore, introducing the LNG clean energy resource in a large number is inexorable trend, and the construction of coastal area LNG receiving terminal will enter new developing stage.Hinge terminal based on this patent will be brought into play its good economic benefit and social benefit in the construction of China LNG hinge terminal.
Description of drawings
Fig. 1 illustrates the structural representation according to LNG Liquefied natural gas receiving system of the present invention.
Embodiment
Be described in detail below in conjunction with the receiving system and the processing method of the drawings and specific embodiments a kind of LNG Liquefied natural gas provided by the invention.
Generally speaking, the invention provides a kind of receiving system of multi-functional LNG Liquefied natural gas, this system is at receiving terminal storage with again on the basis of gasification function, increased the function of sending outside of the service function of transport function, CNG of LNG and CNG.Wherein, the transport function of LNG can be that water transport also can be land transportation, and the water transport of LNG can be that transportation in bulk also can be containerized transport; The land transportation of LNG is with the form transportation of shipping container.Sending outside of CNG can be that water transport also can be land transportation, and the water transport of CNG and land transportation are all transported outward with the form of shipping container.
As shown in Figure 1, the application's multi-functional liquefaction rock gas receiving system comprises: the LNG cargo ship, LNG cargo ship landing pier, the LNG uninstalling system, the LNG storage system, LNG is gasification system again, LNG transmission system and shore facilities, further comprise LNG bulk transfer ship, shipping LNG loading system, LNG harbour in bulk, LNG container transshipment ship, the LNG container terminal, shipping CNG loading system, CNG container transshipment ship, CNG container transshipment harbour, LNG land transportation system and device, CNG land transportation system and device.In native system, it is gentle outside the pale of civilization to remove common storage, Transshipment Permitted LNG (get final product bulk transfer, but container transshipment) again on the one hand, and Transshipment Permitted CNG (container transshipment) also on the other hand.LNG and CNG get final product water transport, but also land transportation.CNG on the one hand can be from the rock gas of gasification again, and on the other hand can be from the flashed vapour (BOG) after handling.
Being appreciated that the system that constitutes by said structure, only is in order to illustrate and to illustrate, is not the necessary complete structure as shown in the figure of native system, when realizing the partial function that native system is mentioned, with regard to not needing all compositions is made up.For example, the function of native system comprise receiving terminal storage, again the service function of transport function, the CNG of gasification, LNG and CNG send function outside, in the time of specific implementation, may not can be treated to CNG, just do not need some optional equipments of CNG; Perhaps for part
Make land used, may have the problem of not transporting or partly transporting, can not make up or partly make up the harbour and the Load System of transhipment.
Further with reference to figure 1, wherein, as shown in Figure 1, the LNG cargo ship refers to be loaded with LNG and travels to and fro between cargo ship between receiving system and the LNG source, is docked in usually on the harbour as the part of terminal maritime works facility.
LNG cargo ship landing pier belongs to the part of terminal maritime works facility, is used for the stop of cargo ship, and has pipeline and be used to come by the LNG uninstalling system and unload LNG.
The LNG uninstalling system is used to unload LNG, and the LNG uninstalling system is attached on the landing pier of terminal maritime works facility, through being located at cryogenic piping and the LNG transmission system on the terminal maritime works facility, LNG is unloaded on the LNG storage system from cargo ship.
The LNG storage system, LNG passes to gasification system again from the LNG storage system through the LNG transmission system.Storage system and again gasification system can separate, also can integrator.It is movably that the LNG storage system is analogous to gasification system again, can install at water transport to scene then in factory process, can transport it again as required.The LNG storage facilities can be built and be installed on the bank, perhaps as the part of land LNG receiving terminal maritime works facility.LNG owing to importing into and physical displacement of heat, and produces flashed vapour (BOG) in the process of unloading or storage, this flashed vapour is in low-temperature condition, and the production of day flashed vapour is generally 0.1%-0.3%.As time goes on, flashed vapour constantly increases in storage tank, need handle it.In the present invention, a BOG part that is produced turns back to the cabin of LNG cargo ship with balance cabin internal pressure, and another part is exported to BOG heating pressurization device at the LNG storage system by pipeline.
LNG is gasification system again, has single casing or similar form, can be from boat or dumb, perhaps is positioned at land.Gasification system has relative fixed when the production and operation again, and relatively-stationary way of realization mainly comprises the spud leg supporting type, ballast semi-submersible type and enclosing locate mode.
The LNG transmission system is arranged between LNG storage system and the LNG receiving terminal maritime works facility, and again between gasification system and the LNG storage system, is used for transmitting betwixt the liquid gas or the gas of gasification again.
Shore facilities, be meant be used for supporting LNG receive, again gasification and rock gas defeated outward on the bank or extend to system and facility in the offshore water.
BOG heats pressurization device, between LNG storage system and CNG container loading platform, the BOG of LNG storage system output is carried out heat treated, it is warmed up to the normal temperature state, perhaps-15 degree centigrade between the normal temperature, and in order to increase the amount of being loaded with of shipping container, BOG is pressurizeed, pressurization is handled as required, might increase the pressure of hundred times, makes its volume-diminished.
CNG container loading platform, it can be pier or road upper terminal, is used for compressed natural gas, the processing that containerizes is so that shipment.
Shipping CNG loading system between CNG container loading platform and CNG container transshipment ship, is used for the CNG shipping container on the CNG container loading platform is loaded into CNG container transshipment ship.
CNG container transshipment ship is used for the CNG shipping container is transported by the water route.
CNG land transportation system and device are used for compressed natural gas is loaded into the land transportation system by CNG, and transport by land transportation.
With the form transhipment of CNG, can satisfy certain customers' needs (as being the automobile of fuel with the rock gas).
As the LNG of Fig. 1 rear end of gasification system again, the gasification rock gas that LNG exports behind the gasification system more same some by pressure treatment, output to CNG container loading platform, transmit by the mode of CNG.A part is in addition directly exported to the user outward in the mode of the rock gas of gasification as required.
As the bottom of Fig. 1, the LNG storage system is as the transfer platform of plugging into, and the LNG that can utilize large-scale large ship transportation is directly in the harbour transhipment that breaks, and to alleviate the pressure of LNG receiving terminal storage system, saves the space like this and raises the efficiency.Wherein, the output of LNG storage system is exported to three positions in the lower end, and the first, be transferred to LNG harbour in bulk; Second is transferred to the LNG container terminal; The 3rd, directly export to LNG fuel ship, this ship carries out the power operation with LNG as direct fuel.
LNG harbour in bulk is used for the LNG of LNG storage system transmission is carried out packing, transfers to small-sized hull.
The LNG container terminal is used for the LNG of LNG storage system transmission is carried out the processing of container-type, is convenient to long-distance and concentrated transportation.
Shipping LNG loading system is used for the LNG in bulk or the shipping container style of LNG harbour in bulk or LNG container terminal is loaded into the LNG cargo ship.
LNG container transshipment ship is used to the LNG shipping container of admitting shipping LNG loading system to transmit.
LNG bulk transfer ship is used to the LNG in bulk that admits shipping LNG loading system to transmit.
LNG land transportation system and device are used for the LNG of in bulk or shipping container style is carried out land transporting by the road upper terminal.
In addition, gasification system and LNG storage system can be positioned at marine or land again, can be one or separate, being positioned at when land, can directly be exactly system, when being positioned at the sea, set up corresponding platform, promptly gasifying is furnished with gasification system again on the platform again, is furnished with the LNG storage system on the LNG storage platform, arranges the lifting platform system in platform and/or the LNG storage platform that gasifies again.Wherein, gasification system (Regasification System) comprises vaporizer and accessory structure thereof again, is arranged on the platform that gasifies again (Regasification Vessel), and LNG and with the rock gas output of gasification is used for gasifying again.Lifting platform system (VEAS) be used to change gasify again platform/or LNG storage platform with respect to the vertical position of the bottom or the water surface.The lifting platform adjust system includes but not limited to: (1) in order to adjust the spud leg supporting type of the platform that gasifies again/LNG storage platform with respect to the bottom or spud leg vertical position, comprises hydraulic lifting type, gear climb type, pulley is drawing or the combination of these modes; (2) prefabricated maritime works's Infrastructure (lifting or not lifting) by adjusting this facility, and/or is adjusted drinking water or the lifting platform/LNG storage system that gasifies again by ballast system (comprising direct constant weight), supports the platform/LNG that gasifies again and stores platform; (3) remain on the static relatively of gasification platform 2 vertical positions by enclosing structure (comprising Dry dock or similar facility).Platform gasify again when the production and operation, have relative fixed, relatively-stationary way of realization mainly comprises the spud leg supporting type, ballast semi-submersible type, enclosing locate mode.Same, this means of fixation can also be applicable to LNG storage platform.Just, when gasifying platform and LNG storage platform the two one again, can have stationarity and mobility as the receiving platform of its one.
Support the fixing platform of gasification again of self-lifting for spud leg, when the platform that gasifies again is in floating condition, by being installed in the lowering or hoisting gear on the hull platform, spud leg is promoted, whole platform swims on the water surface.When gasifying platform fixed support state again,, spud leg is descended be supported on the bottom, the platform lifting is broken away from the water surface, be not subjected to the influence of SEA LEVEL VARIATION by being installed in the lowering or hoisting gear on the hull platform.Lowering or hoisting gear can adopt mode lifting platforms such as hydraulic lifting, gear climbing or the stretching of pulley rope, makes it break away from the water surface.For the fixing platform of gasification again of ballast semi-submersible type, build fixing base station, stake or lifting device at the bottom, the gasification installation platform is after adjusting to specified position on the water surface again, by ballast its sinking or lowering or hoisting gear are risen, the platform that gasifies again is fixed under water on base station, fixing stake or the lowering or hoisting gear.For the fixing platform of gasification again of enclosing sunk type, on the water surface, build closed enclosing structure, the gasification installation platform sails in the enclosing structure again, and the water in the enclosing is extracted out partly or entirely, and the gasification installation platform is fixed.Enclosing comprises the fixed sidewall of enclosing pedestal, three directions and the sidewall that gate is housed on direction.
The platform that gasifies again has mobility, when the platform that gasifies again can be adjusted to buoyancy aid with the platform that gasifies again fixedly the time, moves from first ground to second.For example, the platform that gasifies is again built on first ground again, and water transport is installed to second ground; When the needs peak regulation, the platform that gasifies again can be dragged to other place and be used for peak regulation; When running into overhaul, the platform that needs repairing can be dragged to dock and keep in repair, change another platform and replace original platform work.The thing of more being worth mentioning, the platform that movably gasifies again under the situation that does not adopt single point mooring and anchor chain mooring, has kept the static of relative ground.It can be built in other local processing, and water transport is installed to building-site, and keeps static when the production and operation.Similarly, LNG storage platform also has mobility; Further, when gasifying platform and LNG storage platform the two one again, can have above-mentioned concrete feature as the receiving platform of its one.Platform and the LNG storage platform that gasifies again can make up layout, and gasification installation can be divided on the different hull platforms with the LNG storage facilities again, also can be placed on the receiving platform that constitutes one on the identical platform.According to the demand of terminal gas consumption, can dispose many gasify again platform and LNG storage platforms.When gasification installation is divided on the different hull platforms with the LNG storage facilities again, can adjust the distance between the two, to improve the fire safety performance, should be noted that also when the two one that equally the distance between the two guarantees Security.
Further, the platform that gasifies again vertically can adjusted lifting.Lifting function can be realized by gasify again lowering or hoisting gear on the platform or maritime works's facility or the above two combination of design.The former keeps the static of platform by promoting the platform that gasifies again, and the latter is fixed on maritime works's facility it by reducing the position of platform.In case the location, gasify platform horizontal position and vertical position normally are in fixed static with respect to ground again, but in the practical application it can be adjusted according to concrete needs.
The processing method of the flashed vapour that LNG Liquefied natural gas is produced in unloading and storage is described in another embodiment.LNG Liquefied natural gas is in the process of discharging or storage, because the importing into physical displacement and the flashed vapour of generation place low-temperature condition of heat, daily output flash distillation tolerance is generally 0.1%-0.3%.As time goes on, flashed vapour constantly increases in storage tank, need handle it.For the LNG Liquefied natural gas receiving terminal, common processing method is: a part of flashed vapour turns back to the LNG cabin with balance cabin internal pressure when discharging, and a part is returned in the LNG storage tank after the condensation again, has unnecessary part just to burn or be discharged in the air again.In the method for the invention,, no longer send storage tank back to after the condensation for the flashed vapour that returns the LNG storage tank after the condensation, but by processing that flashed vapour is heated.Particularly, by heating plant, be heated normal temperature.In addition,, be inversely proportional to, with its pressurization, to increase transport capacity based on pressure and transport capacity according to transportation demand.The natural gas straight of heating picked into the grid of rock gas or the back of boosting produce with the form of CNG.Handle the processing process of having simplified flashed vapour like this, cut down finished cost; And since flashed vapour again the equipment of condensation belong to Cryo Equipment, the warming-up device of flashed vapour belongs to normal temperature equipment, Cryo Equipment is expensive more a lot of than normal temperature equipment, therefore can reduce equipment cost.
Can see, End System of the present invention has the function that outer gas transmission is provided, and also has the middle rotating function and the service function that compressed natural gas is provided of the LNG Liquefied natural gas of providing, like this, the user scope that terminal covered will improve greatly, and the service form of terminal also has diversity.
It should be noted that at last, above embodiment is only in order to describe technological scheme of the present invention rather than the present technique method is limited, the present invention can extend to other modification, variation, application and embodiment on using, and therefore thinks that all such modifications, variation, application, embodiment are in spirit of the present invention and teachings.
Claims (16)
1. LNG Liquefied natural gas receiving system comprises: the LNG cargo ship, and LNG cargo ship landing pier, LNG uninstalling system, LNG storage system, LNG be gasification system and LNG transmission system again, it is characterized in that,
The LNG cargo ship is loaded with LNG, travels to and fro between between receiving system and the LNG source;
LNG cargo ship landing pier has pipeline, is used to come by the LNG uninstalling system come from LNG cargo ship unloading LNG;
The LNG uninstalling system is used for through being located at cryogenic piping and the LNG transmission system on the terminal maritime works facility LNG being unloaded on the LNG storage system from cargo ship;
The LNG storage system is used for LNG is passed to gasification system again through the LNG transmission system, perhaps arrives LNG transfer system in bulk and LNG shipping container reprinting ship and transports or use the LNG carrier loader by land transhipment by marine;
LNG is gasification system again, is used for liquefied natural gas gasifying, and the rock gas of gasification is defeated outward;
The LNG transmission system is arranged between LNG storage system and the LNG receiving terminal maritime works facility, and again between gasification system and the LNG storage system, is used for transmitting betwixt the liquid gas or the gas of gasification again;
Described rock gas receiving system also comprises the flashed vapour processing system, LNG movement system and CNG outward transport system;
Wherein, the flash steam processing system is used for handling stores and unloads the flash steam that produces, and the LNG movement system is used for the LNG Liquefied natural gas transhipment, and the rock gas that CNG outward transport system is used for pressurizeing is transported.
2. system according to claim 1, it is characterized in that, the LNG Liquefied natural gas of LNG storage system is transferred to LNG fuel ship, LNG harbour in bulk and/or LNG container terminal, and LNG harbour in bulk is used for the LNG of LNG storage system transmission is carried out packing, sends the transhipment boats and ships to; The LNG container terminal is used for the LNG of LNG storage system transmission is carried out the processing of container-type.
3. system according to claim 2, it is characterized in that, the LNG movement system comprises shipping LNG loading system, LNG container transshipment ship, LNG bulk transfer ship and LNG land transportation device, shipping LNG loading system is used for the LNG of LNG harbour in bulk or LNG container terminal is loaded into the LNG cargo ship, the LNG container transshipment is peculiar to vessel in the LNG shipping container of admitting shipping LNG loading system to transmit, the LNG bulk transfer is peculiar to vessel in the LNG in bulk that admits shipping LNG loading system to transmit, and LNG land transportation device is used for the LNG of in bulk or shipping container style is carried out land transporting.
4. according to claim 1,2 or 3 described systems, it is characterized in that, the flashed vapour processing system comprises BOG heating pressurization device, and it is between LNG storage system and CNG container loading platform, and the BOG that the LNG storage system is exported heats and/or pressure treatment.
5. system according to claim 4 is characterized in that, CNG outward transport system comprises shipping CNG loading system, CNG container transshipment ship, CNG container transshipment harbour and CNG land transportation device; CNG container loading platform is used for the compressed natural gas processing that containerizes; Shipping CNG loading system between CNG container loading platform and CNG container transshipment ship, is used for the CNG shipping container on the CNG container loading platform is loaded into CNG container transshipment ship; The CNG container transshipment is peculiar to vessel in the CNG shipping container is transported by the water route; CNG land transportation device is used for compressed natural gas is loaded in the land transportation system and by land transportation by the CNG loading system and transports.
6. system according to claim 1 is characterized in that, described LNG storage system and LNG again gasification system be separately or one, and the two is movably.
7. system according to claim 1, it is characterized in that, the cabin that the BOG part that the LNG storage system will be produced in the process of unloading or storage turns back to the LNG cargo ship is with balance cabin internal pressure, and a part is exported to BOG heating pressurization device at the LNG storage system by pipeline.
8. system according to claim 1 is characterized in that, described LNG storage system and LNG gasification system again fix, fix or fix by the enclosing sunk type by the ballast semi-submersible type by spud leg support self-lifting.
9. system according to claim 8, it is characterized in that, described LNG storage system and LNG again gasification system by the lifting platform system with described LNG storage system and LNG again the spud leg on the gasification system descend and be supported on the bottom, gasification system and/or the lifting of LNG storage system break away from the water surface again with LNG; Described LNG storage system and LNG be gasification system at the bottom of the spud leg on the gasification system promotes leaving water again with described LNG storage system and LNG by described lifting platform system again, with LNG again gasification system and/or LNG storage system to drop to the water surface floating.
10. system according to claim 8, it is characterized in that, by ballast LNG gasification system and/or LNG storage system again, or the liftable underwater facility that rises, with described LNG storage system and LNG again gasification system be placed on platform, fixing stake or the underwater facility of building at the bottom, unloading ballast or decline underwater facility make LNG gasification system and/or LNG storage system are floating again.
11. system according to claim 8, it is characterized in that, described LNG storage system and LNG gasification system again are arranged in the closed enclosing structure, extract the water in the enclosing out, with LNG again gasification system and/or LNG storage system be fixed on the enclosing pedestal, gasification system and/or LNG storage system are floating again by add water in enclosing.
12. a LNG Liquefied natural gas receiving handling method comprises:
Step 10), LNG cargo ship rest in LNG cargo ship landing pier, come from LNG cargo ship unloading LNG by the LNG uninstalling system, the LNG uninstalling system is used for through being located at cryogenic piping and the LNG transmission system on the terminal maritime works facility LNG being unloaded on the LNG storage system from cargo ship;
Step 20), LNG passes to gasification system, LNG transfer system in bulk, LNG shipping container transfer system from the LNG storage system through the LNG transmission system again;
Step 30), LNG gasification system again, with liquefied natural gas gasifying and outer defeated;
Step 40), the LNG loading system of LNG storage system is loaded into the LNG cargo ship with LNG, the LNG shipping container that LNG container transshipment ship admits shipping LNG loading system to transmit, the LNG in bulk that LNG bulk transfer ship admits shipping LNG loading system to transmit, LNG land transportation device carries out land transporting with the LNG of in bulk or shipping container style.
13. method according to claim 12, it is characterized in that, comprise that also the BOG that the LNG storage system is exported heats and/or pressure treatment, is transferred to shipping CNG loading system by the heating of the BOG between LNG storage system and CNG container loading platform pressurization device.
14. method according to claim 13 is characterized in that, also comprises by CNG container loading platform the compressed natural gas processing that containerizes; By the shipping CNG loading system between CNG container loading platform and CNG container transshipment ship the CNG shipping container on the CNG container loading platform is loaded into CNG container transshipment ship; By CNG container transshipment ship the CNG shipping container is transported by the water route; By CNG land transportation device compressed natural gas is loaded in the land transportation system and by land transportation by CNG and transports.
15. a process liquefaction rock gas unloads the method for the flashed vapour that produces in the storage, comprising:
The flashed vapour that in the process of discharging or storage, produces for LNG, a part turns back to the LNG cabin with balance cabin internal pressure when discharging, and another part flashed vapour carries out by after heating, pressurization or pressure treatment not.
16. method according to claim 15 also comprises: with the flashed vapour of heating
Directly send into the grid of rock gas or boost the form transmission of back with CNG.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100679894A CN102242864A (en) | 2011-03-21 | 2011-03-21 | Liquefied natural gas (LNG) receiving system and treatment method |
| PCT/CN2012/000351 WO2012126279A1 (en) | 2011-03-21 | 2012-03-21 | Receiving system and processing method for liquefied natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100679894A CN102242864A (en) | 2011-03-21 | 2011-03-21 | Liquefied natural gas (LNG) receiving system and treatment method |
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| Publication Number | Publication Date |
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| CN102242864A true CN102242864A (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100679894A Pending CN102242864A (en) | 2011-03-21 | 2011-03-21 | Liquefied natural gas (LNG) receiving system and treatment method |
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| WO (1) | WO2012126279A1 (en) |
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| CN102654239A (en) * | 2012-05-22 | 2012-09-05 | 中国海洋石油总公司 | Gasifying system for liquefied natural gas receiving terminal |
| WO2012126279A1 (en) * | 2011-03-21 | 2012-09-27 | 益资海洋工程技术(北京)有限公司 | Receiving system and processing method for liquefied natural gas |
| WO2018214232A1 (en) * | 2017-05-26 | 2018-11-29 | 惠生（南通）重工有限公司 | Flexibly combined and unmanned floating lng storage system |
| CN109139114A (en) * | 2018-09-25 | 2019-01-04 | 广州码云互联网科技有限公司 | High pressure underground gas well emits monitoring device on sinking |
| CN109140225A (en) * | 2018-09-05 | 2019-01-04 | 中国海洋石油集团有限公司 | A kind of LNG Distribution Center |
| CN109595459A (en) * | 2019-01-21 | 2019-04-09 | 周林江 | A kind of liquefied natural gas uninstalling system and method |
| CN111591396A (en) * | 2019-06-25 | 2020-08-28 | 南京蒽天捷能源科技有限公司 | Movable serial floating liquid cargo lightering maritime work platform and lightering method |
| CN114630983A (en) * | 2019-10-30 | 2022-06-14 | 埃克森美孚上游研究公司 | Method of supplying LNG from a supply hub using a dual-purpose LNG carrier and a smaller capacity storage at a receiving terminal |
| CN116045211A (en) * | 2023-01-03 | 2023-05-02 | 中交第四航务工程勘察设计院有限公司 | Remote large LNG shipping device and shipping method thereof |
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| WO2012126279A1 (en) * | 2011-03-21 | 2012-09-27 | 益资海洋工程技术(北京)有限公司 | Receiving system and processing method for liquefied natural gas |
| CN102654239A (en) * | 2012-05-22 | 2012-09-05 | 中国海洋石油总公司 | Gasifying system for liquefied natural gas receiving terminal |
| CN102654239B (en) * | 2012-05-22 | 2014-07-30 | 中国海洋石油总公司 | Gasifying system for liquefied natural gas receiving terminal |
| WO2018214232A1 (en) * | 2017-05-26 | 2018-11-29 | 惠生（南通）重工有限公司 | Flexibly combined and unmanned floating lng storage system |
| CN109140225A (en) * | 2018-09-05 | 2019-01-04 | 中国海洋石油集团有限公司 | A kind of LNG Distribution Center |
| CN109139114A (en) * | 2018-09-25 | 2019-01-04 | 广州码云互联网科技有限公司 | High pressure underground gas well emits monitoring device on sinking |
| CN109595459A (en) * | 2019-01-21 | 2019-04-09 | 周林江 | A kind of liquefied natural gas uninstalling system and method |
| CN111591396A (en) * | 2019-06-25 | 2020-08-28 | 南京蒽天捷能源科技有限公司 | Movable serial floating liquid cargo lightering maritime work platform and lightering method |
| CN111591396B (en) * | 2019-06-25 | 2021-07-20 | 南京蒽天捷能源科技有限公司 | Movable serial floating liquid cargo lightering maritime work platform and lightering method |
| CN114630983A (en) * | 2019-10-30 | 2022-06-14 | 埃克森美孚上游研究公司 | Method of supplying LNG from a supply hub using a dual-purpose LNG carrier and a smaller capacity storage at a receiving terminal |
| CN116045211A (en) * | 2023-01-03 | 2023-05-02 | 中交第四航务工程勘察设计院有限公司 | Remote large LNG shipping device and shipping method thereof |
| CN116045211B (en) * | 2023-01-03 | 2023-09-19 | 中交第四航务工程勘察设计院有限公司 | Remote large LNG shipping device and shipping method thereof |
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| Publication number | Publication date |
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| WO2012126279A1 (en) | 2012-09-27 |
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