CN114597953B - Comprehensive energy system and method for jointly developing and utilizing multiple resources in deep open sea - Google Patents
Comprehensive energy system and method for jointly developing and utilizing multiple resources in deep open sea Download PDFInfo
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- CN114597953B CN114597953B CN202210490308.3A CN202210490308A CN114597953B CN 114597953 B CN114597953 B CN 114597953B CN 202210490308 A CN202210490308 A CN 202210490308A CN 114597953 B CN114597953 B CN 114597953B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2/00—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon
- C10G2/50—Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon from carbon dioxide with hydrogen
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/70—Waterborne solar heat collector modules
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
- H02J15/008—Systems for storing electric energy using hydrogen as energy vector
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
Abstract
The invention provides a comprehensive energy system and a method for jointly developing and utilizing various resources in deep and open sea. The comprehensive energy system comprises an offshore energy processing platform, an offshore wind farm, an offshore optical power plant, an offshore optical thermal field, a natural gas platform and a transport ship. The offshore energy processing platform comprises a storage battery module, an electrolyzed water hydrogen production module, an electric module, a control module, a fresh water supply module, a heat supply module, a low-carbon power generation module and an organic liquid fuel synthesis module. The offshore energy processing platform is arranged, so that resources developed by an offshore wind farm, an offshore optical power field, an offshore optical thermal field and a natural gas platform can be organically combined. Through a collaborative development mode, various energy sources in ocean resource development are fully utilized, so that electric energy, natural gas and other energy sources developed in deep and distant seas can be transported back to a land load center for application, or fuel is provided for sailing ships, the development cost of the deep and distant ocean resources is reduced, and the technical feasibility is improved.
Description
Technical Field
The invention belongs to the field of comprehensive development and utilization of energy, and particularly relates to a comprehensive energy system and a method for jointly developing and utilizing multiple resources in deep open sea.
Background
The ocean has abundant resources, and people are actively developing resources of ocean connotation such as offshore wind energy, solar energy, seawater, oil gas and the like. With the increase of the development degree of oceans, the development range is gradually expanded from shallow offshore to deep open sea, and the developed resources are difficult to transport back to a land load center for use. For example, deep open sea natural gas platforms also fail to employ conventional pipeline transportation development models, resulting in technical and economic infeasibility. The price of submarine cables is rapidly increased along with the increase of offshore distance, the submarine cables are expensive in manufacturing cost and difficult to lay, and wind energy or solar energy power generation in deep and far sea also faces the difficulty of energy transmission.
The offshore wind energy, solar energy, seawater, oil gas and other resource energy can bring various resource energy flows such as current, heat flow, fresh water flow, hydrocarbon flow and the like, can be developed in a collaborative mode, and electricity which is developed at far sea and is difficult to store and gas which is developed at far sea and is difficult to transport are converted into organic liquid fuel through a transport ship and then the organic liquid fuel is transported to a land load center, so that the development of development and utilization of the resources at far sea is promoted.
Disclosure of Invention
The invention aims to provide a comprehensive energy system and a method for jointly developing and utilizing various resources in deep and open sea, which can ensure that the development and utilization of the deep and open sea resources are more technically and economically feasible by jointly developing and utilizing various ocean resources.
The comprehensive energy system comprises an offshore energy processing platform, an offshore wind power plant for converting wind energy into electric energy, an offshore optical electric field for converting solar energy into electric energy, an offshore optical thermal field for converting solar energy into heat energy, a natural gas platform for developing offshore natural gas and a transport ship;
the offshore energy processing platform comprises a storage battery module, an electrolyzed water hydrogen production module, an electric module for converting voltage and rectifying, a control module, a fresh water supply module for processing seawater into fresh water, a heat supply module, a low-carbon power generation module for generating power by adopting natural gas and an organic liquid fuel synthesis module;
the electric energy generated by the offshore wind power plant and the offshore photoelectric field is connected to the electric input port of the electric module, the heat generated by the offshore photo-thermal field is connected to the heat input port of the heat supply module, and the natural gas generated by the natural gas platform is divided into two parts which are respectively connected to the natural gas input port of the low-carbon power generation module and the natural gas input port of the organic liquid fuel synthesis module.
The electric output port of the storage battery module is connected with the electric input port of the water electrolysis hydrogen production module, the hydrogen output port of the water electrolysis hydrogen production module is connected to the hydrogen input port of the organic liquid fuel synthesis module, and the oxygen output port of the water electrolysis hydrogen production module is connected to the oxygen input port of the low-carbon power generation module;
the electric energy output from the electric output port of the electric module is divided into four strands which are respectively connected to the electric input port of the storage battery module, the electric input port of the electrolyzed water hydrogen production module, the electric input port of the fresh water supply module and the electric input port of the natural gas platform;
monitoring signals of the control module are received from other modules of the offshore energy processing platform, and control signals are sent to the other modules; the seawater input port of the fresh water supply module is connected to seawater, and the fresh water output port of the fresh water supply module is connected to the water input port of the electrolyzed water hydrogen production module;
the heat output from the heat output port of the heat supply module is divided into three parts which are respectively connected to the heat input port of the electrolyzed water hydrogen production module, the heat input port of the fresh water supply module and the heat input port of the organic liquid fuel synthesis module;
a heat output port of the low carbon power generation module is connected to a heat input port of the heat supply module, an electric quantity output port of the low carbon power generation module is connected to an electric quantity input port of the electric module, and a CO of the low carbon power generation module 2 An output port is connected to the CO of the organic liquid fuel synthesis module 2 Input port, H of the low carbon power generation module 2 The O output port is connected to the water input port of the water electrolysis hydrogen production module;
the redundant heat of the organic liquid fuel synthesis module is connected into the heat supply module through a heat energy output port of the organic liquid fuel synthesis module, and the organic liquid fuel produced by the organic liquid fuel synthesis module is output outwards and used as power fuel.
Further, electric power and signals in the system are transmitted through cables, and heat, organic liquid fuel and water in the system are transmitted through pipelines.
The invention also provides a method for realizing the joint development and utilization of various resources by applying the comprehensive energy system, which comprises the following steps:
wind energy and solar energy are respectively converted into electric energy by the offshore wind farm and the offshore optical electric field, the electric energy flow is transmitted to an electric module on the offshore energy processing platform, after voltage conversion, rectification and the like of the electric module, the electric energy flow is divided into four strands, and the four strands of electric energy flows respectively enter a storage battery module for storage, provide electric energy for an electrolyzed water hydrogen production module, provide electric energy for a fresh water supply module and provide electric energy for a natural gas platform; the electric energy stored in the storage battery module is respectively controlled according to the control signals of the control module, when the electric module cannot supply enough power, the electric energy is provided for the water electrolysis hydrogen production module, and the electric energy generated by the low-carbon power generation module is transmitted to the electric module to supplement the electric energy;
the offshore photo-thermal field converts solar energy into heat energy, the heat energy flow is transmitted to 1-6 heat supply modules of the offshore energy processing platform, and waste heat energy generated in the power generation process of the low-carbon power generation module is transmitted to the heat supply modules; the heat supply module stores heat energy or distributes the heat energy to the electrolyzed water hydrogen production module, the fresh water supply module and the organic liquid fuel synthesis module according to the temperature grade requirement for use; the excess heat of the organic liquid fuel synthesis module is transmitted back to the heat supply module;
hydrogen and oxygen produced by the water electrolysis hydrogen production module are respectively transmitted to the organic liquid fuel synthesis module and the low-carbon power generation module; the natural gas produced by the offshore natural gas platform is transmitted to the low-carbon power generation module and the organic liquid fuel synthesis module, and the natural gas and oxygen in the low-carbon power generation module are subjected to oxygen-enriched combustion to generate CO 2 To an organic liquid fuel synthesis module, CO 2 、CH 4 The organic liquid fuel is generated by thermochemical reaction with hydrogen and is transported to land by a transport ship or is transported to other offshore ships to be used as power fuel;
the fresh water supply module is used for processing seawater into fresh water, the fresh water is transmitted into the electrolyzed water hydrogen production module, water generated in the low-carbon power generation module is also transmitted into the electrolyzed water hydrogen production module, and the water in the electrolyzed water hydrogen production module is decomposed into hydrogen and oxygen through electrochemical reaction;
the control module receives the signal flow of the operation condition of other modules, sends the signal flow to other modules and regulates and controls the operation of other modules.
Further, the fresh water supply module adopts multi-stage flash evaporation, reverse osmosis, low-temperature multi-effect distillation or electrodialysis technology.
Furthermore, the water electrolysis hydrogen production module adopts alkaline water electrolysis, proton exchange membrane water electrolysis or high-temperature solid oxide water electrolysis technology.
Furthermore, the low-carbon power generation module adopts a natural gas oxygen-enriched combustion power generation technology, and the power generation tail gas condenses CO 2 And H 2 And O is separated.
Furthermore, the offshore optothermal field is arranged on an offshore energy processing platform.
Furthermore, the offshore wind farm adopts a floating type fan.
Furthermore, the storage battery module is used for assisting the water electrolysis hydrogen production module to adjust, the service life of the water electrolysis hydrogen production module is prolonged by reducing the dynamic fluctuation of the water electrolysis hydrogen production module, and the energy conversion rate is improved.
Further, when the heat or electric energy required by the system is insufficient and cannot be supplemented by wind energy or solar energy, the low-carbon power generation module can be used for supplementing the heat or electric energy.
Compared with the prior art, the invention has the beneficial effects that:
the offshore energy processing platform is arranged, so that resources developed by an offshore wind farm, an offshore optical power field, an offshore optical thermal field and a natural gas platform can be organically combined. Through a collaborative development mode, various energy sources in ocean resource development are fully utilized, so that electric energy, natural gas and other energy sources developed in deep and distant seas can be transported back to a land load center for application, or fuel is provided for sailing ships, the development cost of the deep and distant ocean resources is reduced, and the technical feasibility is improved.
Drawings
Fig. 1 is a structural block diagram of an integrated energy system for jointly developing and utilizing multiple resources in deep open sea according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a comprehensive energy system for combined development and utilization of multiple resources in deep and open sea is shown, which comprises an offshore energy processing platform 1, an offshore wind farm 2, an offshore photoelectric farm 3, an offshore photo-thermal farm 4, a natural gas platform 5 and a transport ship 6.
The offshore energy processing platform 1 comprises a storage battery module 1-1, an electrolyzed water hydrogen production module 1-2, an electrical module 1-3, a control module 1-4, a fresh water supply module 1-5, a heat supply module 1-6, a low-carbon power generation module 1-7 and an organic liquid fuel synthesis module 1-8.
Electric energy generated by the offshore wind power plant 2 and the offshore wind power plant 3 is connected to electric input ports of the electric modules 1 to 3, heat generated by the offshore photo-thermal field 4 is connected to heat input ports of the heat supply modules 1 to 6, and natural gas generated by the natural gas platform 5 is divided into two parts which are respectively connected to natural gas input ports of the low-carbon power generation modules 1 to 7 and natural gas input ports of the organic liquid fuel synthesis modules 1 to 8.
An electric output port of the storage battery module 1-1 is connected with an electric input port of the electrolyzed water hydrogen production module 1-2, a hydrogen output port of the electrolyzed water hydrogen production module 1-2 is connected with a hydrogen input port of the organic liquid fuel synthesis module 1-8, and an oxygen output port of the electrolyzed water hydrogen production module 1-2 is connected with an oxygen input port of the low-carbon power generation module 1-7.
The electric energy output from the electric output port of the electric module 1-3 is divided into four strands which are respectively connected to the electric input port of the storage battery module 1-1, the electric input port of the electrolyzed water hydrogen production module 1-2, the electric input port of the fresh water supply module 1-5 and the electric input port of the natural gas platform 5.
Monitoring signals of the control modules 1-4 are received from other modules of the offshore energy processing platform 1, and control signals are sent to the other modules; the seawater input port of the fresh water supply module 1-5 is connected to seawater, and the fresh water output port of the fresh water supply module 1-5 is connected to the water input port of the electrolyzed water hydrogen production module 1-2.
The heat output from the heat output port of the heat supply module 1-6 is divided into three parts which are respectively connected to the heat input port of the electrolyzed water hydrogen production module 1-2, the heat input port of the fresh water supply module 1-5 and the heat input port of the organic liquid fuel synthesis module 1-8.
The heat output port of the low-carbon power generation module 1-7 is connected to the heat input port of the heat supply module 1-6, the electric quantity output port of the low-carbon power generation module 1-7 is connected to the electric quantity input port of the electric module 1-3, and the CO of the low-carbon power generation module 1-7 2 CO whose output port is connected to the organic liquid fuel synthesis modules 1 to 8 2 Input port, H of Low carbon Power Generation Module 1-7 2 The O output port is connected to the water input port of the electrolyzed water hydrogen production module 1-2.
The redundant heat of the organic liquid fuel synthesis module 1-8 is connected to the heat supply module through the heat energy output port, and the organic liquid fuel produced by the organic liquid fuel synthesis module 1-8 is output outwards to be used as power fuel.
In this embodiment, the electric energy and signals in the integrated energy system are transmitted through cables, and the heat, organic liquid fuel and water in the system are transmitted through pipes.
The embodiment also provides a method for realizing the joint development and utilization of various resources by applying the comprehensive energy system, which comprises the following steps:
electric energy flow: the offshore wind power plant 2 and the offshore photoelectric field 3 respectively convert wind energy and solar energy into electric energy, the electric energy flow is transmitted to the electric modules 1-3 on the offshore energy processing platform 1, after voltage conversion, rectification and the like, the electric energy flow is divided into four strands, and the four strands of electric energy flows respectively enter the storage battery module 1-1 to be stored, provide electric energy for the electrolyzed water hydrogen production module 1-2, provide electric energy for the fresh water supply module 1-5 and provide electric energy for the natural gas platform 5. The electric energy stored in the storage battery module 1-1 provides electric energy for the water electrolysis hydrogen production module 1-2 according to the control signal of the control module 1-4 when the power supply of the electric module 1-3 is insufficient. The electric energy generated by the low-carbon power generation modules 1-7 is transmitted to the electric modules 1-3 to supplement the electric energy.
Thermal energy flow: the offshore photo-thermal field 4 converts solar energy into heat energy, the heat energy flow is transmitted to heat supply modules 1-6 of the offshore energy processing platform 1, and waste heat energy generated in the power generation process of the low-carbon power generation modules 1-7 is transmitted to the heat supply modules 1-6; the heat supply module 1-6 stores heat energy or distributes the heat energy to the electrolyzed water hydrogen production module 1-2, the fresh water supply module 1-5 and the organic liquid fuel synthesis module 1-8 according to the temperature grade requirement for use; the excess heat of the organic liquid fuel synthesis module 1-8 is transferred back to the heat supply module 1-6.
Flow of hydrocarbon oxygen species: hydrogen and oxygen produced by the water electrolysis hydrogen production module 1-2 are respectively transmitted to the organic liquid fuel synthesis module 1-8 and the low-carbon power generation module 1-7; the natural gas produced by the offshore natural gas platform 1 is transmitted to the low-carbon power generation modules 1-7 and the organic liquid fuel synthesis modules 1-8, and the natural gas and oxygen in the low-carbon power generation modules 1-7 are subjected to oxygen-enriched combustion to generate CO 2 To organic liquid fuel synthesis modules 1-8, CO 2 、CH 4 The hydrogen and the organic liquid fuel are subjected to thermochemical reaction to generate organic liquid fuel, such as methanol, formic acid and the like, and the organic liquid fuel is transported to land by a transport ship or is transported to other marine ships to be used as power fuel.
Water flow: the seawater is processed into fresh water by the fresh water supply module 1-5, the fresh water is transmitted into the electrolyzed water hydrogen production module 1-2, the water generated in the low-carbon power generation module 1-7 is also transmitted into the electrolyzed water hydrogen production module 1-2, and the water in the electrolyzed water hydrogen production module 1-2 is decomposed into hydrogen and oxygen through electrochemical reaction.
Signal flow: the control modules 1-4 receive the signal flow of the operation condition of other modules, send the signal flow to other modules and regulate and control the operation of other modules.
Optionally, the fresh water supply modules 1-5 may employ multi-stage flash evaporation, reverse osmosis, low temperature multi-effect distillation, or electrodialysis techniques. The water electrolysis hydrogen production module 1-2 adopts alkaline water electrolysis, proton exchange membrane water electrolysis or high-temperature solid oxide water electrolysis technology. The low-carbon power generation modules 1-7 adopt a natural gas oxygen-enriched combustion power generation technology, and CO is condensed from power generation tail gas 2 And H 2 And O is separated.
Optionally, the offshore photo-thermal field 4 may be disposed on an offshore energy processing platform, and the offshore wind farm 2 may employ a floating wind turbine.
Optionally, the storage battery module 1-1 is used for assisting in adjusting the water electrolysis hydrogen production module 1-2, and the service life of the water electrolysis hydrogen production module 1-2 can be prolonged by reducing dynamic fluctuation of the water electrolysis hydrogen production module 1-2, and the energy conversion rate is improved.
Optionally, when the heat or power required in the system is insufficient and cannot be supplemented by wind or solar energy, the low-carbon power generation modules 1-7 can be used for supplementing.
In summary, the comprehensive energy system of the embodiment establishes an offshore energy processing platform 1, and organically combines resources developed by an offshore wind farm 2, an offshore photoelectric farm 3, an offshore photo-thermal farm 4, and a natural gas platform 5. Through a collaborative development mode, various energy sources in ocean resource development are fully utilized, so that electric energy, natural gas and other energy sources developed in deep and distant seas can be transported back to a land load center for application, or fuel is provided for sailing ships, the development cost of the deep and distant ocean resources is reduced, and the technical feasibility is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A comprehensive energy system for jointly developing and utilizing various resources in deep and open sea is characterized by comprising an offshore energy processing platform, an offshore wind farm for converting wind energy into electric energy, an offshore photovoltaic field for converting solar energy into heat energy, a natural gas platform for developing offshore natural gas and a transport ship;
the offshore energy processing platform comprises a storage battery module, an electrolyzed water hydrogen production module, an electric module for converting voltage and rectifying, a control module, a fresh water supply module for processing seawater into fresh water, a heat supply module, a low-carbon power generation module for generating power by adopting natural gas and an organic liquid fuel synthesis module;
the electric energy generated by the offshore wind power plant and the offshore photoelectric field is connected to the electric input port of the electric module, the heat generated by the offshore photo-thermal field is connected to the heat input port of the heat supply module, and the natural gas generated by the natural gas platform is divided into two parts which are respectively connected to the natural gas input port of the low-carbon power generation module and the natural gas input port of the organic liquid fuel synthesis module;
the electric output port of the storage battery module is connected with the electric input port of the water electrolysis hydrogen production module, the hydrogen output port of the water electrolysis hydrogen production module is connected to the hydrogen input port of the organic liquid fuel synthesis module, and the oxygen output port of the water electrolysis hydrogen production module is connected to the oxygen input port of the low-carbon power generation module;
the electric energy output from the electric output port of the electric module is divided into four strands which are respectively connected to the electric input port of the storage battery module, the electric input port of the electrolyzed water hydrogen production module, the electric input port of the fresh water supply module and the electric input port of the natural gas platform;
monitoring signals of the control module are received from other modules of the offshore energy processing platform, and control signals are sent to the other modules; the seawater input port of the fresh water supply module is connected to seawater, and the fresh water output port of the fresh water supply module is connected to the water input port of the electrolyzed water hydrogen production module;
the heat output from the heat output port of the heat supply module is divided into three parts which are respectively connected to the heat input port of the electrolyzed water hydrogen production module, the heat input port of the fresh water supply module and the heat input port of the organic liquid fuel synthesis module;
the heat output port of the low carbon power generation module is connected to the heat input port of the heat supply module, the electric quantity output port of the low carbon power generation module is connected to the electric quantity input port of the electric module, and the CO of the low carbon power generation module 2 An output port is connected to the organic liquid fuelCO of material synthesis module 2 Input port, H of the low carbon power generation module 2 The O output port is connected to the water input port of the water electrolysis hydrogen production module;
the surplus heat of the organic liquid fuel synthesis module is connected into the heat supply module through a heat energy output port of the organic liquid fuel synthesis module, and the organic liquid fuel produced by the organic liquid fuel synthesis module is output outwards through the transport ship and used as power fuel.
2. The integrated energy system of claim 1, wherein the electrical energy and signals in the system are transmitted by cables and the heat, organic liquid fuel and water in the system are transmitted by pipes.
3. A method for jointly developing and utilizing multiple resources in deep open sea is characterized by comprising the following steps:
wind energy and solar energy are respectively converted into electric energy by the offshore wind farm and the offshore optical electric field, the electric energy flow is transmitted to an electric module on the offshore energy processing platform, after voltage conversion and rectification processing of the electric module, the electric energy flow is divided into four strands, and the four strands of electric energy flow respectively enter a storage battery module for storage, provide electric energy for an electrolyzed water hydrogen production module, provide electric energy for a fresh water supply module and provide electric energy for a natural gas platform; the electric energy stored in the storage battery module is respectively controlled according to the control signals of the control module, when the electric module cannot supply enough power, the electric energy is provided for the water electrolysis hydrogen production module, and the electric energy produced by the low-carbon power generation module is transmitted to the electric module to supplement the electric energy;
the offshore photo-thermal field converts solar energy into heat energy, the heat energy is transmitted to a heat supply module of the offshore energy processing platform, and waste heat energy generated in the power generation process of the low-carbon power generation module is transmitted to the heat supply module; the heat supply module stores heat energy or distributes the heat energy to the electrolyzed water hydrogen production module, the fresh water supply module and the organic liquid fuel synthesis module according to the temperature grade requirement for use; the excess heat of the organic liquid fuel synthesis module is transmitted back to the heat supply module;
hydrogen production by electrolyzing waterHydrogen and oxygen produced by the module are respectively transmitted to the organic liquid fuel synthesis module and the low-carbon power generation module; the natural gas produced by the natural gas platform is transmitted to the low-carbon power generation module and the organic liquid fuel synthesis module, and the natural gas and oxygen in the low-carbon power generation module are subjected to oxygen-enriched combustion to generate CO 2 To an organic liquid fuel synthesis module, CO 2 Natural gas platform produced CH 4 The organic liquid fuel is generated by thermochemical reaction with hydrogen and is transported to land by a transport ship or is transported to other offshore ships to be used as power fuel;
the fresh water supply module is used for processing seawater into fresh water, the fresh water is transmitted into the electrolyzed water hydrogen production module, water generated in the low-carbon power generation module is also transmitted into the electrolyzed water hydrogen production module, and the water in the electrolyzed water hydrogen production module is decomposed into hydrogen and oxygen through electrochemical reaction;
the control module receives the signal flow of the operation condition of other modules, sends the signal flow to other modules and regulates and controls the operation of other modules.
4. The method of claim 3, wherein the fresh water supply module employs multi-stage flash evaporation, reverse osmosis, low temperature multi-effect distillation, or electrodialysis techniques.
5. The method of claim 3, wherein the water electrolysis hydrogen production module employs alkaline water electrolysis, proton exchange membrane water electrolysis or high temperature solid oxide water electrolysis technology.
6. The method of claim 3, wherein the low-carbon power generation module adopts a natural gas oxycombustion power generation technology, and the tail gas of power generation condenses CO 2 And H 2 And O is separated.
7. The method of claim 3, wherein the offshore photothermal field is located on an offshore energy processing platform.
8. The method of claim 3, wherein the offshore wind farm employs floating wind turbines.
9. The method of claim 3, wherein the storage battery module is used to assist the water electrolysis hydrogen production module in regulation, and the water electrolysis hydrogen production module is prolonged in service life and improved in energy conversion rate by reducing dynamic fluctuation of the water electrolysis hydrogen production module.
10. The method of claim 3, wherein the low carbon power module supplements the system when insufficient heat or power is required in the system and cannot be supplemented from wind or solar power.
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