CN206093505U - Coastal waters offshore LNG receiving system - Google Patents
Coastal waters offshore LNG receiving system Download PDFInfo
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- CN206093505U CN206093505U CN201621111599.7U CN201621111599U CN206093505U CN 206093505 U CN206093505 U CN 206093505U CN 201621111599 U CN201621111599 U CN 201621111599U CN 206093505 U CN206093505 U CN 206093505U
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- lng
- coastal waters
- condenser
- bog
- offshore
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- 239000003653 coastal water Substances 0.000 title claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 21
- 238000002309 gasification Methods 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 230000004087 circulation Effects 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 13
- 239000007792 gaseous phase Substances 0.000 claims description 7
- 230000017531 blood circulation Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000007791 liquid phase Substances 0.000 claims description 4
- 239000012071 phase Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000004073 vulcanization Methods 0.000 claims description 2
- 239000003949 liquefied natural gas Substances 0.000 abstract description 92
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 41
- 239000003345 natural gas Substances 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000007667 floating Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000032258 transport Effects 0.000 description 7
- 238000005507 spraying Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 244000030765 Phaleria macrocarpa Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a coastal waters offshore LNG receiving system, including full cold type LNG transport ship, LNG receiving arrangement, LNG pressure boost gasification system, natural gas cooling system, cold insulation circulation system and ship bank connected system. The utility model discloses an it is hot again to import liquefied natural gas at coastal waters offshore department construction floating or gravity base formula offshore LNG receiving system to carry to natural gas main line through single point mooring unit and submarine pipeline, realize that liquefied natural gas's offshore is received, thereby solve the pier site selection difficulty topic to LNG accepting station. The utility model discloses the relocation of gasification function is received with bank base LNG and to the coastal waters, occuping harbour water front resource will be reduced. Compare with traditional block stowage technology, the utility model discloses especially adapted in the area that lacks natural harbour and the circumstances of the difficult change of port planning, simple process, investment are low, and construction period is short, and market changes equipment transportable to other areas and continues the service.
Description
Technical field
This utility model is related to the storaging and transport technology neck of liquefied natural gas (Liquefied Natural Gas, abbreviation LNG)
Domain, more particularly, to a kind of coastal waters offshore LNG reception system.
Background technology
Liquefied natural gas (Liquefied Natural Gas, abbreviation LNG), main component is methane, and it is the earth to be recognized
On most clean fossil energy.Colourless, tasteless, nontoxic and non-corrosiveness, its volume is about the 1/ of commensurability gaseous natural gas volume
625, the quality of liquefied natural gas is only 45% or so of consubstantiality hydrops.
The main component of liquefied natural gas is methane, and the atmospheric boiling point of methane is -161 DEG C, and critical temperature is -84 DEG C, is faced
Boundary's pressure is 4.1MPa.Its manufacture process is the natural gas for first producing in gas field through purification (dehydration, de- hydrocarbon, de- sour gas)
Afterwards, make methane become liquid using the technique of throttling, expansion and additional low-temperature receiver refrigeration, generally utilize low-temperature liquefaction natural gas shipping
Send, gasify again when using.
LNG cargo ships are internationally recognized high-tech, highly difficult, high added value " three high " product, and LNG ship is -162
The specialized ships of conveying liquified natural gas under DEG C low temperature, are a kind of " marine super van coolers ", are called world's shipbuilding " on Phaleria macrocarpa
Jewel ", the cost of a ship is up to 200,000,000 yuan of dollars, equivalent to the cost of two 10000TEU container ships, than a frame Boeing
747 passenger planes are also expensive, are that cost is the most expensive in whole world shipping ship；Next to that technical difficulty is high, natural gas is being reduced to
Subzero 163 DEG C become after liquid, and the original gaseous state of volume ratio reduces 600 times, and LNG ship must be by it in transportation
Subzero 163 DEG C are maintained at, volatility is less than 0.5%；Reliability requirement is high, according to international gas transport specification (IGCcode)
Require, transporting the ship cargo tank system of LNG there must be two-layer barrier (Barrier), be exactly two-layer for membrane LNG tanker
Insulation and thin film are protected, even if still ensuring that transporting safely for LNG in the case of main stor(e)y leakage.
- 163 degrees Celsius of LNG is transported at normal temperatures and pressures, and cargo tank containment system is LNG ship and conventional shipping ship
Compare it is most special where.At present the tank system of world's LNG carrier has two kinds of self supporting type and diaphragm type.Self supporting type
There are two kinds of A types and Type B, A types are prismatic or referred to as IHI SPB, and Type B is spherical.
" single point mooring ", from English " Single Point Mooring ", abbreviation SPM.Should say that SPM is one total
Concept, refer to all of single-point, all permission mooring ships are with the change of prevailling wind and sea situation around single mooring point
Freely turn round, the mooring that resistance minimum position is closed so as to constantly be in wind, wave, stream is single point mooring.With fixed harbour
Compare, its feature has cost of investment low, and the construction period is short, building site selects face big, and maintenance cost is low.With coastal waters stone
The development of exploration activity exploitation, single point mooring technique gradually applies to offshore production platform, crude oil/finished product from refueling at sea originally
Oily terminal etc. is widely applied.
Under normal circumstances, shipping trade can not all lack harbour, and harbour will be connected with land, be easy to goods to switch to land fortune
It is defeated.Meanwhile, need to throw huge fund construction to ships that transport anchoring, entering and leaving port, by setting from the harbour of pool and handling operation offer service
Apply.And for low temperature LNG cargo ships, because its storage volume is big, up to 200～300 meters, gage is up to 12 for usual captain
～16 meters, cause harbour addressing difficult, cost is high, long construction period, the problems such as harbour operating cost is high.
The content of the invention
This utility model overcomes shortcoming of the prior art, there is provided a kind of coastal waters offshore LNG reception system, by
Floating or gravity base formula LNG reception system are built at the offshore of coastal waters by Liquefied Natural Gas Import re-heat, and by single point mooring
Device and submarine pipeline are delivered to gas trunklines, and the offshore for realizing liquefied natural gas is received, so as to solve for LNG receiving stations
A harbour addressing difficult problem.
The technical solution of the utility model is：A kind of coastal waters offshore LNG reception system, including full-cool LNG cargo ships,
LNG reception devices, LNG supercharging gasification systems, natural air cooling system, cold insulation blood circulation and connection between ship and bank system；Wherein：
The LNG superchargings gasification system includes：The loading arm of LNG reception devices is divided into two-way and connects from top and bottom respectively
Enter after-condenser, the liquid-phase outlet of after-condenser successively with booster pump, LNG gasification device, pressure regulating metering device and connection between ship and bank system
System connection；
The natural air cooling system includes：The upper outlet of the pressure regulating metering device accesses the gas phase of after-condenser and enters
Mouthful；The gaseous phase outlet of after-condenser accesses BOG knockout drums, the spray import on BOG knockout drums top and the handling of LNG reception devices
Arm connects, and the low temperature gas outlet at the top of BOG knockout drums is connected with the return arm of LNG reception devices；
The cold insulation blood circulation includes：The gaseous phase outlet on the BOG knockout drums top successively with stage compressor, two grades
Compressor and pressure regulating metering device connect；The outlet at bottom of pressure regulating metering device is used successively with mini liquefier, cold insulation circulation
LNG storage tank is connected, and the low pressure LNG outlet of the cold insulation circulation LNG storage tank is connected with the loading arm of LNG reception devices.
Compared with prior art, the utility model has the advantages that：This utility model is natural by the liquefaction of low temperature LNG cargo ships
Gas delivers to again the natural gas after condensing units, mixing gasifying by LNG reception devices, and liquid phase is delivered to LNG booster gasification apparatus and added
It is thermal evaporation to normal temperature high voltage, finally pass sequentially through pressure regulating metering device, connection between ship and bank device and deliver to high pressure line；Day after gasification
So gas will divide one gas, by condensing cooling again after return low temperature LNG cargo ships and make gas-liquid equilibrium.This utility model is eliminated greatly
Type LNG storage tank, shortens LNG and receives technological process, reduces construction cost；It is simultaneously this equipped with natural gas reliquefaction installation
System provides the pipeline SAPMAC method under inoperative operating mode.This utility model moves bank base LNG reception gasification function to coastal waters, will
Reduce the occupancy to harbour coastline resource.Compared with traditional harbour loading technique technology, this utility model is very suitable for lacking
The area at natural harbour and port and harbor planning are difficult situation about changing, and invest low, and the construction period is short, and the market equipment of changing can be moved
Move to other areas to continue to service.
Description of the drawings
This utility model will be illustrated by example and with reference to the appended drawing, wherein：
Fig. 1 is the schematic diagram of this coastal waters offshore LNG reception system.
Specific embodiment
A kind of coastal waters offshore LNG reception system, as shown in figure 1, including：Including LNG reception devices 1, after-condenser 2, increase
Press pump 3, LNG gasification device 4, pressure regulating metering device 5, connection between ship and bank system 6, BOG knockout drums 7, stage compressor 8, two-stage compression
Machine 9, mini liquefier 10, cold insulation circulation LNG storage tank 11, full-cool LNG cargo ships 12 and various valve 13-19 (including
FV valves 14,15,18,19PV valves 16, LV valves 17, TV valves 13), FV valves refer to flow interlocked control valve, PV valve finger pressure interlocked controls
Valve, LV valves refer to that level chain control valve, TV valves refer to temperature interlocked control valve.This coastal waters offshore LNG reception system is arranged on ship
Or on offshore unit, heat balance during system operation is responsible for regulation by outside hot water/sea water service system.
Wherein：
LNG reception devices 1 are constituted by LNG loading arm and BOG return arms；After-condenser 2, is responsible for low temperature LNG and room temperature
Natural gas combination cooling；Two-stage supercharging cryopump 3 can be immersed pump, centrifugal pump etc.；Mini liquefier 10 is responsible in system
Cold insulation low-temperature receiver is provided when not receiving LNG.
Specifically,
1) boat-carrying LNG low-lift pumps are provided with low temperature LNG cargo ships 12, LNG is increased to into low pressure through boat-carrying pump
(more than 0.4MPa), then by the LNG loading arm of LNG reception devices 1, is divided to two strands to transfer to after-condenser 2, one its top feed
For spraying cooling, one bottom feed is used to adjust flow.
2) liquid-phase outlet of after-condenser 2 connects the entrance of booster pump 3, outlet and the entrance of LNG gasification device 4 of booster pump 3
It is connected, the outlet of LNG gasification device 4 is connected with the entrance of pressure regulating metering device 5, outlet and the connection between ship and bank system of pressure regulating metering device 5
The entrance of system 6 is connected.
Wherein：
By LNG reception devices 1, after-condenser 2, booster pump 3, LNG gasification device 4, pressure regulating metering device 5, connection between ship and bank system
System 6 etc. constitutes natural gas gasifying system, and it is responsible for gasifying LNG to room temperature and is finally delivered to terrestrial pipeline.
Connection between ship and bank system 6 is responsible for for the qualified natural gas of gasification being delivered to terrestrial pipeline by seabed.Wherein ship-to-shore connects
Welding system 6 can be catenary suspension type continuous vulcanization mooring system formula Single-point system (CALM), or tower Single-point system (soft firm arm etc.), or rotary type tower
Single-point system (the outer capstan heads of Nei Zhuanta) or common pipe support system.
Specifically,
1) pressure regulating metering device 5, will take out one natural gas Jing LV valves 17 and be back to the gas phase of after-condenser 2.
2) the gaseous phase outlet Jing PV valves 16 of after-condenser 2 are connected into BOG knockout drums 7, and BOG knockout drums 7 are introduced by TV valves 13
To carrying out spraying cooling into gas, the qualified low temperature gas of temperature returns again to low temperature LNG cargo ships 12 to balance cargo ship storage LNG
Pressure tank.
Wherein：
Natural air cooling is constituted by pressure regulating metering device 5, after-condenser 2, PV valves 16, LV valves 17, BOG knockout drums 7 etc.
System, it is responsible for cooled natural gas and is finally delivered to low temperature LNG cargo ships realizing pressure balance.
Specifically,
1) BOG knockout drums 7 are responsible for collecting BOG gases, and its gaseous phase outlet is connected with cryogenic compressor 8.
2) outlet of cryogenic compressor 8 is connected with split-compressor 9；The outlet of split-compressor 9 and pressure regulating metering device 5
Connection,
3) pressure regulating metering device 5 is taken out one gas and is out connected with the entrance of mini liquefier 10, mini liquefier outlet
It is connected with the entrance of cold insulation circulation LNG storage tank 11, cold insulation circulation LNG storage tank 11 is responsible for output low pressure LNG and whole system is entered
Row cold insulation is circulated.Cryopump is provided with cold insulation circulation LNG storage tank 11.
Wherein：
By BOG knockout drums 7, cryogenic compressor 8, split-compressor 9, pressure regulating metering device 5, mini liquefier 10, protect
SAPMAC method LNG storage tank 11 etc. constitutes cold insulation blood circulation, and it is responsible for without the whole system under outer defeated operating mode from cold insulation.
Operation principle of the present utility model is：
The LNG that the transport of low temperature LNG cargo ships comes first passes around boat-carrying pump increases to low pressure (more than 0.4MPa), middle pressure
LNG to be transferred to and increase to high pressure (more than 4MPa) by booster pump after after-condenser buffering, and high pressure LNG is converted into room temperature day by gasifier
Right gas, most after Jing pressure regulation meterings and normal-temperature natural-gas are delivered to by terrestrial pipeline by connection between ship and bank device；The system is unloaded
During operation, pressure regulating metering device will take out one normal-temperature natural-gas and return transports to after-condenser, cold with outer defeated LNG by after-condenser
But exchange heat, form cryogenic natural gas, return and transport to low temperature LNG cargo ships as gas-liquid equilibrium.After-condenser realizes natural air cooling
During temperature, due to the BOG of higher temperature that can be produced when time of contact is inadequate, detect when defeated BOG is returned through BOG separators
Temperature is too high, is introduced into LNG spraying coolings, so as to the BOG of higher temperature is reduced into temperature to suitably returning defeated temperature.The system
Do not unload operation when, the BOG that will be stranded in by BOG separator collections in system by compressor boost to high pressure, and is led to
Cross pressure regulating metering device to distribute into mini liquefier, the LNG after liquefaction enters cold insulation circulation LNG storage tank, outer when needed
Transport to whole system and realize that cold insulation is circulated.
Claims (10)
1. a kind of coastal waters offshore LNG reception system, it is characterised in that：Including full-cool LNG cargo ships, LNG reception devices, LNG
Supercharging gasification system, natural air cooling system, cold insulation blood circulation and connection between ship and bank system；Wherein：
The LNG superchargings gasification system includes：The loading arm of LNG reception devices is divided into two-way and accesses again from top and bottom respectively
Condenser, the liquid-phase outlet of after-condenser connects successively with booster pump, LNG gasification device, pressure regulating metering device and connection between ship and bank system
Connect；
The natural air cooling system includes：The upper outlet of the pressure regulating metering device accesses the gas phase import of after-condenser；
The gaseous phase outlet of after-condenser accesses BOG knockout drums, the spray import on BOG knockout drums top and the loading arm of LNG reception devices
Connection, the low temperature gas outlet at the top of BOG knockout drums is connected with the return arm of LNG reception devices；
The cold insulation blood circulation includes：The gaseous phase outlet on the BOG knockout drums top successively with stage compressor, two-stage compression
Machine and pressure regulating metering device connect；The outlet at bottom of pressure regulating metering device is stored up successively with mini liquefier, cold insulation circulation with LNG
Tank is connected, and the low pressure LNG outlet of the cold insulation circulation LNG storage tank is connected with the loading arm of LNG reception devices.
2. a kind of coastal waters offshore LNG reception system according to claim 1, it is characterised in that：In pressure regulation metering dress
Level chain control valve is provided between the gas phase import of the upper outlet and after-condenser put.
3. a kind of coastal waters offshore LNG reception system according to claim 1, it is characterised in that：In the after-condenser
Pressure interlocked control valve is provided between gaseous phase outlet and BOG knockout drums.
4. a kind of coastal waters offshore LNG reception system according to claim 1, it is characterised in that：On the BOG knockout drums
Temperature interlocked control valve is provided between the spray import in portion and the loading arm of LNG reception devices 1.
5. a kind of coastal waters offshore LNG reception system according to claim 1, it is characterised in that：In the loading arm from top
Portion and bottom to be accessed and be provided with flow interlocked control valve on two pipelines of after-condenser.
6. a kind of coastal waters offshore LNG reception system according to claim 1, it is characterised in that：In the booster pump and LNG
Flow interlocked control valve is provided between gasifier.
7. a kind of coastal waters offshore LNG reception system according to claim 1, it is characterised in that：Transport in the full-cool LNG
Booster pump is provided with defeated ship.
8. a kind of coastal waters offshore LNG reception system according to claim 7, it is characterised in that：The booster pump is latent liquid
Pump or centrifugal pump.
9. a kind of coastal waters offshore LNG reception system according to claim 1, it is characterised in that：The connection between ship and bank system
For catenary suspension type continuous vulcanization mooring system formula Single-point system, tower Single-point system, rotary type tower Single-point system or common pipe support system.
10. a kind of coastal waters offshore LNG reception system according to claim 1, it is characterised in that：The cold insulation circulation is used
Cryopump is provided with LNG storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621111599.7U CN206093505U (en) | 2016-10-11 | 2016-10-11 | Coastal waters offshore LNG receiving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621111599.7U CN206093505U (en) | 2016-10-11 | 2016-10-11 | Coastal waters offshore LNG receiving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206093505U true CN206093505U (en) | 2017-04-12 |
Family
ID=60413775
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621111599.7U Active CN206093505U (en) | 2016-10-11 | 2016-10-11 | Coastal waters offshore LNG receiving system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206093505U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287213A (en) * | 2016-10-11 | 2017-01-04 | 中国石油集团工程设计有限责任公司 | A kind of coastal waters offshore LNG receives system and method |
| CN113324175A (en) * | 2021-04-30 | 2021-08-31 | 中交城乡能源有限责任公司 | Long-distance LNG unloading pipeline system and unloading method |
-
2016
- 2016-10-11 CN CN201621111599.7U patent/CN206093505U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287213A (en) * | 2016-10-11 | 2017-01-04 | 中国石油集团工程设计有限责任公司 | A kind of coastal waters offshore LNG receives system and method |
| CN113324175A (en) * | 2021-04-30 | 2021-08-31 | 中交城乡能源有限责任公司 | Long-distance LNG unloading pipeline system and unloading method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan Patentee after: CNPC ENGINEERING DESIGN Co.,Ltd. Patentee after: Zhejiang energy and Natural Gas Group Co.,Ltd. Address before: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan Patentee before: CNPC ENGINEERING DESIGN Co.,Ltd. Patentee before: ZHEJIANG ZHENENG GAS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210303 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. Patentee after: CNPC ENGINEERING DESIGN Co.,Ltd. Patentee after: Zhejiang energy and Natural Gas Group Co.,Ltd. Address before: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan Patentee before: CNPC ENGINEERING DESIGN Co.,Ltd. Patentee before: Zhejiang energy and Natural Gas Group Co.,Ltd. |
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| TR01 | Transfer of patent right |