CN114060717A - Liquefied natural gas floating type regasification unit (LNG-FSRU) regasification system based on nuclear power - Google Patents
Liquefied natural gas floating type regasification unit (LNG-FSRU) regasification system based on nuclear power Download PDFInfo
- Publication number
- CN114060717A CN114060717A CN202111376190.3A CN202111376190A CN114060717A CN 114060717 A CN114060717 A CN 114060717A CN 202111376190 A CN202111376190 A CN 202111376190A CN 114060717 A CN114060717 A CN 114060717A
- Authority
- CN
- China
- Prior art keywords
- water
- lng
- heater
- pump
- propane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
- F17C9/04—Recovery of thermal energy
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D9/00—Arrangements to provide heat for purposes other than conversion into power, e.g. for heating buildings
-
- 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
- Y02E30/00—Energy generation of nuclear origin
Abstract
A liquefied natural gas floating type regasification device (LNG-FSRU) regasification system based on nuclear power comprises a steam generation module and an LNG gasification system, wherein a nuclear reactor is arranged in a reactor cabin of the steam generation module and is sequentially connected with a steam generator, the steam generator generates saturated steam of 40-80 bar, and the heat of the saturated steam of 40-80 bar is respectively supplied to a power generation system, a pump set turbine system and the LNG gasification system. The LNG-FSRU regasification system applies the thermal energy generated by nuclear energy to the power generation system of the floating plant, the turbine system, and the propane and water glycol medium heating system based on the steam medium. Meanwhile, the nuclear power cooling system absorbs the cold energy released by the regasification system. The seawater heat exchange load of the nuclear power cooling system can be greatly reduced while energy conservation and emission reduction are realized, and the damage to the ecological environment is reduced in multiple angles. The system is stable and reliable, the cold and heat energy is efficiently utilized, the energy is saved, the environment is protected, and the pollution is reduced.
Description
Technical Field
The invention relates to the technical field of liquefied natural gas floating type regasification, in particular to a regasification system of a liquefied natural gas floating type regasification device based on nuclear power.
Background
At present, as the use amount of clean energy LNG increases, the market demand of LNG receiving terminals is also increasing. Since onshore LNG receiving terminals are constructed on the coast, the construction of offshore natural gas floating storage and regasification units (LNG-FSRUs) becomes a more economical and convenient solution, and is gradually popularized and applied in the technical field of domestic and foreign LNG engineering.
In recent years, many oil and gas companies, shipyards, design companies, and equipment manufacturers have conducted research on the safety features and design features of LNG-FSRU, and have achieved research results in many fields. The mainstream research directions of the LNG-FSRU regasification system core equipment evaporator include heat exchange of LNG in a heating pipeline by using heated seawater, heat exchange of LNG in a shell-and-tube steam heating evaporator by using steam generated by a steam boiler, and heat exchange of LNG after propane or butane is directly heated by using seawater. The former two need consume a large amount of fossil fuel as heat source in the heat exchange process, and the latter causes harm to marine environment because of the large-scale discharge of the heated seawater after heat exchange.
Disclosure of Invention
In order to solve the above problems, the present invention provides a liquefied natural gas floating regasification plant (LNG-FSRU) regasification system based on nuclear power, which aims to achieve the purpose of using nuclear power as an energy source, avoiding the consumption of a large amount of fossil fuels and the damage to the marine environment, and adopts the technical scheme that:
a liquefied natural gas floating type regasification device (LNG-FSRU) regasification system based on nuclear power comprises a steam generation module, wherein a nuclear reactor is arranged in a reactor cabin of the steam generation module, and the nuclear reactor is sequentially connected with a steam generator and a main circulating pump to form a first circulating network; the steam generator generates saturated steam of 40-80 bar, and the heat of the saturated steam of 40-80 bar respectively enters the power generation system, the pump set turbine system and the LNG gasification system.
The steam generator is sequentially connected with the throttling device, the pump set turbine, the first water glycol heater, the seawater condenser, the condensate pump, the warm water tank, the deaerator, the water feeding pump and the high-pressure water feeding heater to form a second circulation network.
The steam generator is sequentially connected with the generator turbine, the first water glycol heater, the seawater condenser, the condensate pump, the warm water tank, the deaerator, the water feeding pump and the high-pressure water feeding heater to form a third circulation network.
The other end of the seawater condenser is communicated with seawater, and seawater in the sea is pumped into the seawater condenser through a seawater pump of the condenser, flows out of the seawater condenser and flows back to the sea.
The pipeline of the pump set turbine and the generator turbine to the first water glycol heater is provided with a fourth valve, the pipeline of the first water glycol to the seawater condenser is sequentially provided with a third valve and a seventh valve, a second valve is connected between the pipeline of the pump set turbine and the generator turbine to the first water glycol heater and the pipeline of the first water glycol to the seawater condenser, the pipeline of the seawater condenser to the condensate pump is provided with a sixth valve, and a fifth valve is connected between the pipeline of the first water glycol to the seawater condenser and the pipeline of the seawater condenser to the condensate pump.
The steam generator is connected with a second water glycol heater and a seawater condenser in a water glycol closed circulation heating loop in sequence through a throttling device, a first valve is arranged on a pipeline of the steam generator to the second water glycol heater, the water glycol closed circulation heating loop is characterized in that the second water glycol heater is respectively connected with a propane heater and a propane evaporator, the second water glycol heater and the propane evaporator are connected and then converged to a water glycol expansion tank, and the water glycol expansion tank is sequentially connected with a water glycol delivery pump and a first water glycol heater and flows back to the second water glycol heater to form a water glycol closed circulation heating loop.
The propane heater is connected with the natural gas heater, the propane evaporator, the LNG evaporator, the propane tank and the propane delivery pump in sequence through pipelines, and the propane delivery pump flows back to the propane heater to form a propane closed circulation heating loop.
The LNG gasification system comprises a propane closed circulation heating loop, a water glycol closed circulation heating loop and an LNG liquid cargo tank, wherein an LNG transfer pump is arranged in the LNG liquid cargo tank and is sequentially connected with an intake tank, an LNG booster pump, a BOG recondensor, an LNG evaporator, a natural gas heater and a metering pry through pipelines.
In the above-described LNG-FSRU regasification system based on nuclear power, further, the BOG recondenser is extended with a pipeline to return to the suction tank.
In the liquefied natural gas floating type regasification unit (LNG-FSRU) regasification system based on nuclear power, a pressure stabilizer is further provided on a path of the main circulation pump to the reactor and on a path of the reactor to the steam generator in the first circulation network.
The liquefied natural gas floating type regasification equipment (LNG-FSRU) regasification system based on nuclear power is characterized in that the nuclear reactor is a pressurized water reactor, and the heat transfer medium is water pressurized to 15-20 mpa.
In the liquefied natural gas floating type regasification plant (LNG-FSRU) regasification system based on nuclear power, further, the fresh water tank is sequentially connected with the fresh water pump and the warm water tank through pipelines, and the warm water tank control valve is arranged between the fresh water pump and the warm water tank.
In the liquefied natural gas floating type regasification plant (LNG-FSRU) regasification system based on nuclear power, further, water media flow through the first circulation network, the second circulation network and the third circulation network, propane media flow through the propane closed circulation heating loop, and water glycol media flow through the water glycol closed circulation heating loop.
In the liquefied natural gas floating regasification unit (LNG-FSRU) regasification system based on nuclear power, further, the suction tank is extended with a BOG line connected to a BOG recondenser.
In the liquefied natural gas floating regasification unit (LNG-FSRU) regasification system based on nuclear power, further, a BOG line extends from the LNG cargo tank to the BOG recondenser via the BOG gas compressor.
In the liquefied natural gas floating type regasification equipment (LNG-FSRU) regasification system based on nuclear power, further, a first liquid level sensor is arranged in the warm water tank, and the first liquid level sensor is in signal connection with a warm water tank control valve.
In the liquefied natural gas floating type regasification plant (LNG-FSRU) regasification system based on nuclear power, further, a second liquid level sensor is arranged in the steam generator, and the second liquid level sensor is in signal connection with the water supply control valve.
The invention has the beneficial effects that:
1. the invention adopts nuclear power as a heat energy source of the regasification system of the liquefied natural gas floating regasification device, and replaces the prior energy acquisition structure which adopts fossil fuel combustion or seawater heat absorption. The system is energy-saving and environment-friendly, reduces pollution, and simultaneously avoids damage to the marine environment caused by a large amount of discharged low-temperature seawater after heat exchange.
2. The heat energy of the steam generation module and the cold energy of the LNG regasification module are comprehensively and efficiently utilized, and the LNG regasification module recovers and utilizes the low-temperature exhaust steam heat energy after the steam generation module applies work. Compared with the traditional nuclear power system, the system can recycle a large amount of low-temperature heat energy carried by the exhaust steam, and improve the thermal efficiency of the nuclear energy. Meanwhile, the heat exchange quantity between the steam cooling system and the seawater is reduced, so that the damage to the marine environment caused by the large discharge of high-temperature seawater is improved.
3. The system takes nuclear energy as a power source of the whole ship, high-temperature saturated steam generated by a steam generator is applied to an LNG gasification module, and meanwhile, the high-temperature saturated steam is also efficiently applied to each pump set and a power generation system of the FSRU. The system has high nuclear energy utilization rate and considerable economy.
Drawings
FIG. 1 is a system diagram of the present invention;
wherein: 1-nuclear reactor, 2-steam generator, 3-main circulating pump, 4-voltage stabilizer, 5-throttling device, 6-pump set turbine, 7-generator turbine, 8-first water glycol heater, 9-seawater condenser, 10-condensate pump, 11-warm water tank, 12-deaerator, 13-feed water pump, 14-high pressure feed water heater, 15-feed water control valve, 16-condenser seawater pump, 17-warm water tank control valve, 18-fresh water pump, 19-fresh water cabin, 20-second water glycol heater, 21-water glycol delivery pump, 22-water glycol expansion tank, 23-propane heater, 24-propane evaporator, 25-propane delivery pump, 26-propane tank, etc, 27-LNG evaporator, 28-natural gas heating, 29-metering pry, 30-LNG cargo tank, 31-LNG transfer pump, 32-suction tank, 33-LNG booster pump, 34-BOG recondenser, 35-BOG gas compressor, 36-first valve, 37-second valve, 38-third valve, 39-fourth valve, 40-fifth valve, 41-sixth valve, 42-seventh valve, 43-BOG pipeline and 44-generator.
Detailed Description
The invention is further explained with reference to the drawings.
Example 1
Fig. 1 shows a liquefied natural gas floating regasification unit (LNG-FSRU) regasification system based on nuclear power, which includes a reactor cabin, wherein a nuclear reactor is arranged in the reactor cabin, the nuclear reactor adopts a conventional pressurized water reactor, the pressurized water reactor is sequentially connected with a steam generator and a main circulation pump through pipelines, the main circulation pump flows back to the pressurized water reactor to form a first circulation network, and a pressurizer is arranged between a passage of the main circulation pump flowing back to the pressurized water reactor and a passage of the pressurized water reactor to the steam generator, and the pressurizer is used for preventing the equipment from being damaged due to overhigh pressure in the first circulation network and preventing the coolant from boiling due to overlow pressure.
The steam generator is sequentially connected with the throttling device, the pump set turbine, the first water glycol heater, the seawater condenser, the condensate pump, the warm water tank heater, the deaerator, the water feeding pump and the high-pressure water feeding heater through pipelines, and the high-pressure water feeding heater flows back to the steam generator to form a second circulating network. The steam generator is sequentially connected with the generator turbine, the first water glycol heater, the seawater condenser, the condensate pump, the warm water tank heater, the deaerator, the feed pump and the high-pressure feed water heater through pipelines, and the high-pressure feed water heater flows back to the steam generator to form a third circulation network. The heat transfer medium flowing through the first circulation net, the second circulation net and the third circulation net is water. The generator turbine is also connected with the generator through a pipeline.
The other end of the seawater condenser is connected with seawater, the seawater is pumped into the seawater condenser through a seawater pump of the condenser, and after heat exchange is carried out in the seawater condenser, the heated seawater flows back to the sea. The other end of the warm water tank is connected with the fresh water cabin, a fresh water pump and a warm water tank control valve are arranged between the fresh water cabin and the warm water tank, a first liquid level sensor is arranged in the warm water tank, and the first liquid level sensor is connected with the warm water tank control valve. A first liquid level sensor in the warm water tank is connected with a warm water tank control valve, the first liquid level sensor sends a liquid level signal to the warm water tank control valve, when the water level is too low, the warm water tank control valve is automatically opened, fresh water is pumped into the warm water tank from a fresh water cabin through a fresh water pump, after the warm water tank is heated at low temperature, a heat-carrying medium is deaerated through a deaerator and then pumped into a high-pressure water supply heater through a water supply pump for heating, and the heat-carrying medium forms a heat-carrying medium with the pressure of 70-120 bar after being heated by the high-pressure water supply heater and enters a steam generator. And a second liquid level sensor is arranged in the steam generator and is in signal connection with the water supply control valve, the second liquid level sensor sends a liquid level signal to the water supply control valve, and the water supply control valve supplements heat-carrying media into the steam generator in real time according to the liquid level signal. The heat-carrying medium enters a steam generator, and after heat exchange and evaporation are carried out on the heat-carrying medium and 15-20mpa water discharged from a pressurized water reactor, saturated steam of 40-80 bar and the cooled heat-carrying medium are respectively formed, the saturated steam of 40-80 bar enters a second circulation network (namely, the saturated steam of 40-80 bar is provided for a pump set turbine system, and the high-temperature saturated steam drives a pump set turbine to drive an LNG delivery pump, an LNG booster pump, a propane delivery pump, a water glycol delivery pump, a condensate pump, a fresh water pump, a water feed pump and a condenser sea water pump to operate), and a third circulation network continues circulation. Saturated steam of 40bar-80bar is provided for a power generation system, work is done in a turbine of a generator, heat energy of the steam is converted into mechanical energy, a turbine rotor of the generator is connected with the generator, and the mechanical energy is converted into electric energy for instruments, life and illumination of the whole ship; the cooled heat-carrying medium is pumped into the pressurized water reactor through the main circulating pump to be heated, and is continuously circulated in the first circulating net.
The steam generator is connected with the second water glycol heater through a pipeline by a throttling device, a first valve is arranged on a passage of the steam generator to the second water glycol heater, 40-80 bar of saturated steam enters the second water glycol heater for heat exchange after coming out of the steam generator, a low-temperature heat-carrying medium formed after heat exchange flows back to the seawater condenser, and a condensate pump pumps the low-temperature heat-carrying medium into a warm water tank for heating.
A fourth valve is arranged on a passage of the pump set turbine and the generator turbine to the first water glycol heater, a third valve and a seventh valve are sequentially arranged on a passage of the first water glycol heater and the generator turbine to the seawater condenser, a sixth valve is arranged on a passage of the seawater condenser to the warm water tank, a second valve is connected between a passage of the pump set turbine and the generator turbine to the first water glycol heater and a passage of the first water glycol heater and the first water glycol heater to the seawater condenser, and a fifth valve is connected between a passage of the first water glycol heater and the first water glycol heater to the seawater condenser and a passage of the seawater condenser to the warm water tank. The second valve is connected with the fourth valve and the third valve in parallel; the fifth valve is connected with the seventh valve and the sixth valve in parallel.
The LNG gasification system comprises a propane closed circulation heating loop, a water glycol closed circulation heating loop and an LNG liquid cargo tank, wherein an LNG transfer pump is arranged in the LNG liquid cargo tank and is sequentially connected with an intake tank, an LNG booster pump, a BOG recondensor, an LNG evaporator, a natural gas heater and a metering pry through pipelines. A BOG pipeline extends out of the top of the LNG cargo tank, enters a BOG recondenser through a BOG gas compressor, and enters a suction tank through the BOG recondenser; the suction tank also has a BOG line extending from the top thereof, which enters the suction tank via a BOG recondenser.
The water-glycol closed circulation heating loop comprises a second water-glycol heater, the second water-glycol heater is respectively connected with the propane heater and the propane evaporator through pipelines, and is connected with the propane heater and the propane evaporator and then converged to a water-glycol expansion tank, and the water-glycol expansion tank is sequentially connected with the water-glycol delivery pump and the first water-glycol heater through pipelines and then flows back to the second water-glycol heater to form the water-glycol closed circulation heating loop.
The propane heater is connected with the natural gas heater, the propane evaporator, the LNG evaporator, the propane tank and the propane delivery pump in sequence through pipelines, and the propane delivery pump flows back to the propane heater to form a propane closed circulation heating loop. Propane heat-carrying medium flows through the propane closed circulation heating loop, and water glycol heat-carrying medium flows through the water glycol closed circulation heating loop.
When the LNG-FSRU needs to gasify LNG, a third valve and a fourth valve are opened, the second valve is closed, exhaust steam generated by pump sets in the first circulation network and generator turbines in the second circulation network doing work enters the first water glycol heater through the fourth valve to heat a water glycol heat-carrying medium in the LNG gasification system, heat is exchanged in the first water glycol heater, and condensate or steam-water mixture after heat exchange flows through the third valve. When the heat of the dead steam generated by the first circulation network and the second circulation network is not enough to meet the heat demand of the LNG gasification system, the first valve is opened, high-temperature saturated steam enters the second water glycol heater through the throttling device and the first valve, heat exchange is carried out between the high-temperature saturated steam and a water glycol medium heated in the first water glycol heater in the second water glycol heater, and the temperature of the water glycol medium is continuously increased.
The condensate or the steam-water mixture after heat exchange is converged with the condensate or the steam-water mixture flowing through the third valve, when the condensate is the condensate, the fifth valve is opened, the sixth valve and the seventh valve are closed, and the condensate flows through the fifth valve and is pumped into a warm water tank by a condensate pump to be heated; when the confluence is a steam-water mixture, opening a sixth valve and a seventh valve, closing a fifth valve, enabling the steam-water mixture to enter a seawater condenser, exchanging heat with low-temperature seawater in the seawater condenser to condense into water, pumping the condensed water into a warm water tank by a condensate pump to heat, pumping the low-temperature seawater into the condenser by the condensate pump, and circulating the low-temperature seawater back to the sea after heat exchange.
And when the LNG-FSRU does not need to gasify the LNG, closing the first valve, the third valve, the fourth valve and the fifth valve, and opening the second valve, the sixth valve and the seventh valve. And exhaust steam generated by the pump set in the first circulation network and the generator turbine in the second circulation network after acting exchanges heat with low-temperature seawater in a seawater condenser through a second valve and a seventh valve and is condensed into water, the condensed water is pumped into a warm water tank by a condensed water pump to be heated, and the low-temperature seawater is pumped into the condenser by the condensed seawater pump and circulates back to the sea after heat exchange.
The LNG gasification system is a propane and water glycol medium heating system based on a steam medium. The water-ethylene glycol closed heating loop is circulated through the pumping system, heat obtained by heat exchange with the steam generation module is transferred to the propane closed heating loop on the deck, and the propane closed heating loop transfers the heat to the LNG liquid to be gasified.
When the FSRU needs to gasify LNG, low-temperature LNG liquid at-163 ℃ in an LNG liquid cargo tank is conveyed to a suction tank on a deck through an LNG conveying pump, flows through a BOG recondenser after being pressurized by an LNG booster pump, and the LNG flowing through the BOG recondenser is heated to-6 ℃ by propane medium in an LNG evaporator, and the gaseous propane medium is cooled into liquid propane in the process; LNG with the temperature of-6 ℃ enters a natural gas heater, the LNG with the temperature of-6 ℃ is heated to natural gas with the temperature of 3 ℃ in the natural gas heater, and liquid propane is used for heating in the process; the heated natural gas with the temperature of 3 ℃ can be conveyed to a shore station through a metering pry. BOG gas generated in the LNG liquid cargo tank is boosted by a BOG gas compressor and then is converged with BOG gas generated by the suction tank, and the BOG gas exchanges heat with the boosted LNG liquid in a BOG recondenser to become liquid, and the liquid is returned to the suction tank again.
In the propane closed circulation heating loop, low-temperature propane is pumped out of a propane tank through a propane delivery pump and delivered to a propane heater, the propane heater exchanges heat with a water glycol medium to heat, the heated propane liquid exchanges heat with LNG (liquefied natural gas) at the temperature of-6 ℃ in a natural gas heater to cool, then the heated propane liquid is heated by the water glycol medium again in a propane evaporator to be in a gaseous state, the gaseous propane and the low-temperature LNG are converted into liquid state after exchanging heat in the LNG evaporator, and the liquid state returns to the propane tank again to form a closed loop. The water glycol heats the propane in the propane heater and the propane evaporator simultaneously, so that the heat exchange efficiency can be improved.
In the water-ethylene-glycol closed circulation heating loop, low-temperature water-ethylene glycol is pumped out of a water-ethylene-glycol expansion tank through a water-ethylene-glycol conveying pump, and is subjected to heat exchange with high-temperature steam through a first water-ethylene-glycol heater and a second water-ethylene-glycol heater to be heated, a heated water-ethylene-glycol heat-carrying medium respectively enters a propane heater and a propane evaporator, and is subjected to heat exchange with propane to be cooled, and the cooled water-ethylene-glycol heat-carrying medium returns to the water-ethylene-glycol expansion tank to form a closed loop.
The nuclear energy is used as a power source of the whole ship, the high-temperature saturated steam generated by the steam generator is applied to the LNG gasification module, and meanwhile, the high-temperature saturated steam is also efficiently applied to each pump set and a power generation system of the FSRU. The LNG-FSRU regasification system applies the thermal energy generated by nuclear energy to the power generation system of the floating plant, the turbine system, and the propane and water glycol medium heating system based on the steam medium. Meanwhile, the nuclear power cooling system absorbs the cold energy released by the regasification system. The seawater heat exchange load of the nuclear power cooling system can be greatly reduced while energy conservation and emission reduction are realized, and the damage to the ecological environment is reduced in multiple angles. The system is stable and reliable, the cold and heat energy is efficiently utilized, the energy is saved, the environment is protected, and the pollution is reduced.
The LNG gasification system is combined with the steam generation module, the LNG gasification system firstly recycles low-temperature exhaust steam heat energy generated by the steam generation module after acting, the temperature of the exhaust steam generated by the steam generation module is reduced, and then the exhaust steam enters the seawater condenser, so that the heat exchange quantity between the steam cooling system and seawater is reduced, and the damage to the marine environment caused by the large discharge of high-temperature seawater is improved. Compared with the traditional nuclear power system, the steam generation module can recycle a large amount of low-temperature heat energy carried by exhaust steam, and the nuclear energy heat efficiency is improved.
Claims (10)
1. A liquefied natural gas floating regasification unit (LNG-FSRU) regasification system based on nuclear power, characterized in that: the reactor is provided with a steam generating module, a nuclear reactor is arranged in a reactor cabin of the steam generating module, and the nuclear reactor is sequentially connected with a steam generator and a main circulating pump to form a first circulating network; the steam generator generates saturated steam of 40-80 bar, and the heat of the saturated steam of 40-80 bar respectively enters the power generation system, the pump set turbine system and the LNG gasification system;
the steam generator is sequentially connected with the throttling device, the pump set turbine, the first water glycol heater, the seawater condenser, the condensate pump, the warm water tank, the deaerator, the feed pump and the high-pressure feed water heater to form a second circulation network;
the steam generator is sequentially connected with the generator turbine, the first water glycol heater, the seawater condenser, the condensate pump, the warm water tank, the deaerator, the water feeding pump and the high-pressure water feeding heater to form a third circulation network, and a water feeding control valve is arranged between the high-pressure water feeding heater and the steam generator;
the other end of the seawater condenser is communicated with seawater, seawater in the sea is pumped into the seawater condenser through a seawater pump of the condenser, flows out of the seawater condenser and flows back to the sea;
the pipeline of the pump set turbine and the generator turbine to the first water glycol heater is provided with a fourth valve, the pipeline of the first water glycol to the seawater condenser is sequentially provided with a third valve and a seventh valve, a second valve is connected between the pipeline of the pump set turbine and the generator turbine to the first water glycol heater and the pipeline of the first water glycol to the seawater condenser, the pipeline of the seawater condenser to the condensate pump is provided with a sixth valve, and a fifth valve is connected between the pipeline of the first water glycol to the seawater condenser and the pipeline of the seawater condenser to the condensate pump;
the steam generator is sequentially connected with a second water glycol heater and a seawater condenser in a water glycol closed circulation heating loop through a throttling device, a first valve is arranged on a pipeline of the steam generator to the second water glycol heater, the water glycol closed circulation heating loop is characterized in that the second water glycol heater is respectively connected with a propane heater and a propane evaporator, the second water glycol heater and the propane evaporator are connected and then converged into a water glycol expansion tank, and the water glycol expansion tank is sequentially connected with a water glycol delivery pump and a first water glycol heater and reflows to the second water glycol heater to form a water glycol closed circulation heating loop;
the propane heater is sequentially connected with the natural gas heater, the propane evaporator, the LNG evaporator, the propane tank and the propane delivery pump through pipelines, and the propane delivery pump flows back to the propane heater to form a propane closed circulation heating loop;
the LNG gasification system comprises a propane closed circulation heating loop, a water glycol closed circulation heating loop and an LNG liquid cargo tank, wherein an LNG transfer pump is arranged in the LNG liquid cargo tank and is sequentially connected with an intake tank, an LNG booster pump, a BOG recondensor, an LNG evaporator, a natural gas heater and a metering pry through pipelines.
2. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 1, wherein: the BOG recondenser had a line running back to the suction tank.
3. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 1, wherein: in the first circulation network, a pressurizer is provided on a path from the main circulation pump to the nuclear reactor and on a path from the nuclear reactor to the steam generator.
4. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 1, wherein: the nuclear reactor is a pressurized water reactor, and the heat transfer medium is water pressurized to 15-20 mpa.
5. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 1, wherein: the fresh water cabin is connected with a fresh water pump and a warm water tank in sequence through pipelines, and a warm water tank control valve is arranged between the fresh water pump and the warm water tank.
6. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 1, wherein: water media flow through the first circulation net, the second circulation net and the third circulation net, propane media flow through the propane closed circulation heating loop, and water glycol media flow through the water glycol closed circulation heating loop.
7. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 1, wherein: the suction tank extends through a BOG line which is connected to a BOG recondenser.
8. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 1, wherein: the LNG cargo tank extends out of a BOG pipeline and enters a BOG recondensor through a BOG gas compressor.
9. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 5, wherein: a first liquid level sensor is arranged in the warm water tank and is in signal connection with a control valve of the warm water tank.
10. The nuclear power based liquefied natural gas floating regasification unit (LNG-FSRU) regasification system of claim 1, wherein: and a second liquid level sensor is arranged in the steam generator and is in signal connection with the water supply control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111376190.3A CN114060717A (en) | 2021-11-19 | 2021-11-19 | Liquefied natural gas floating type regasification unit (LNG-FSRU) regasification system based on nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111376190.3A CN114060717A (en) | 2021-11-19 | 2021-11-19 | Liquefied natural gas floating type regasification unit (LNG-FSRU) regasification system based on nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114060717A true CN114060717A (en) | 2022-02-18 |
Family
ID=80278481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111376190.3A Pending CN114060717A (en) | 2021-11-19 | 2021-11-19 | Liquefied natural gas floating type regasification unit (LNG-FSRU) regasification system based on nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114060717A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116335823A (en) * | 2022-11-24 | 2023-06-27 | 浙江大学 | Combined cycle system combined with Allam cycle type power station and low-temperature cycle method |
-
2021
- 2021-11-19 CN CN202111376190.3A patent/CN114060717A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116335823A (en) * | 2022-11-24 | 2023-06-27 | 浙江大学 | Combined cycle system combined with Allam cycle type power station and low-temperature cycle method |
| CN116335823B (en) * | 2022-11-24 | 2024-01-23 | 浙江大学 | Combined cycle system combined with Allam cycle type power station and low-temperature cycle method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2464480C2 (en) | Method and device for evaporation of liquefied natural gas and its storage | |
| CN114233417B (en) | Heat storage type deep flexible peak regulation thermal power generation system and heat storage and release method | |
| CN108860550B (en) | Double-power supply and propulsion system for LNG power ship and working method | |
| CN112254561B (en) | Liquid air energy storage system utilizing LNG cold energy and fuel gas peak shaving power generation waste heat | |
| CN108518288B (en) | ORC composite power generation system suitable for LNG hybrid power ship | |
| US20190170025A1 (en) | Renewable Energy Process and Method Using a Carbon Dioxide Cycle to Produce Work | |
| CN114382559B (en) | Double-medium heat storage type peak regulation thermal power generation system and heat storage and release method | |
| WO2018214231A1 (en) | Multifunctional lng floating power generation unit using gas-steam combined cycle | |
| KR20190008793A (en) | Gas Regasification System and Vessel having the same | |
| CN109026235A (en) | A kind of cold energy generation system for liquefied natural gas floating storage regasification plant | |
| CN114060717A (en) | Liquefied natural gas floating type regasification unit (LNG-FSRU) regasification system based on nuclear power | |
| CN216743831U (en) | Liquefied natural gas floating type regasification unit (LNG-FSRU) regasification system based on nuclear power | |
| CN210371045U (en) | Hot dry rock photo-thermal coupling power generation system with heat storage function | |
| CN111878701A (en) | Regasification system and method for offshore liquefied natural gas | |
| KR101637436B1 (en) | Air compressor cooling system, cooling method of floating storage power plant, and fuel gas supply method using the system | |
| CN114046189A (en) | Floating Production and Storage Oil (FPSO) driving system based on nuclear power | |
| KR101246896B1 (en) | System for supplying fuel gas and generating power using waste heat in ship and ship comprising the same | |
| CN202690145U (en) | Modular liquefied natural gas self-generating closed gasification device | |
| CN213392300U (en) | Liquefied natural gas cold energy power generation device | |
| CN112177698A (en) | Liquefied natural gas cold energy power generation device | |
| CN216734694U (en) | Floating Liquefied Natural Gas (FLNG) driving system based on nuclear power | |
| KR102239297B1 (en) | Floating marine structure with electric power generator | |
| CN217426382U (en) | Nuclear power system for oil tanker | |
| KR20200115894A (en) | fuel gas power plant | |
| CN211692594U (en) | LNG gasification and power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |