A zero-carbon seawater desalination salt extraction system

Abstract

The application relates to a zero-carbon seawater desalination and salt extraction system, which comprises a wind-solar dual-energy tower, a membrane seawater desalination system, a solar dual-heat disc evaporator and a wind-solar dual-energy sea salt drying system. The wind-solar dual-energy tower comprises a double-bearing truss type wind power generation system and a photovoltaic power generation system, and the wind power generation system and the photovoltaic power generation system are used for providing electric energy. The double-bearing truss type wind power generation system adopts a wind-variable current load and a spring type strong wind variable resistance system. The wind-solar dual-energy sea salt drying system comprises a sunlight room, a drying cloth curtain and a salt collection and water filtration circulation system, which are used for further drying and crystallizing the heated secondary separation and concentration concentrated salt water to form refined sea salt through drying or air drying. The application can realize seawater desalination and refined sea salt extraction all day long by using clean energy, and the clean energy is used for heating three times, so that the energy utilization efficiency is high. The application has no direct operation cost, small land occupation, high efficiency, low initial investment cost and easy scaling.

Description

Technical Field

[0001] This invention relates to the field of clean energy utilization technology, specifically a zero-carbon seawater desalination and salt extraction system. Background Technology

[0002] There are many methods for seawater desalination, but membrane desalination and thermal distillation remain the main methods. While membrane technology has significantly reduced desalination costs, they are still far higher than expected. Thermal distillation, although producing better quality water, is even more expensive.

[0003] Seawater desalination requires a large amount of energy. Coastal areas generally have abundant solar and wind energy resources, making solar and wind power desalination both economical and environmentally friendly, and one of the main means of solving the problem of freshwater shortages. Although using solar energy for seawater desalination is pollution-free, has low operating costs, and offers virtually unlimited solar, wind, and seawater resources, it suffers from low efficiency, difficulty in scaling up, and high initial investment costs. Direct solar evaporation is the simplest and lowest-cost method for seawater desalination, but it requires a large land area, produces salt with higher impurity levels, and is significantly affected by climate change. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a zero-carbon seawater desalination and salt extraction system.

[0005] A zero-carbon seawater desalination and salt extraction system includes a wind-solar dual-energy tower, a membrane seawater desalination system, a solar dual-heat plate evaporator, and a wind-solar dual-energy sea salt drying system;

[0006] The wind-solar dual-energy tower includes a dual-bearing truss-type wind power generation system and a photovoltaic power generation system. The wind power generation system and the photovoltaic power generation system are used to provide electrical energy, and the solar collector is used to provide a heat source for RO membrane hot water filtration through a heat exchanger. The dual-bearing truss-type wind power generation system adopts a wind-following variable load and a spring-type strong wind variable resistance system, which can automatically adjust the load of the generator according to the change of wind force. When the wind force exceeds the preset maximum threshold, the sail is adjusted to automatically increase the wind resistance, and when the wind force is lower than the preset minimum threshold, the sail is adjusted to automatically reduce the wind resistance.

[0007] The membrane-based seawater desalination system includes a pretreatment system, a heat exchanger, and a hot water RO membrane filtration system. The pretreatment system includes a primary filtration system and a secondary sand filtration system connected in sequence. The inlet of the pretreatment system is connected to seawater, and the outlet is connected to the inlet of the heat exchanger tube layer. The inlet of the heat exchanger shell layer comes from the hot water heated by the solar collector, and the water at the shell layer outlet returns to the matching hot water tank of the solar collector. The outlet of the heat exchanger tube layer is connected to the hot water RO membrane filtration system, which is used to filter the seawater after heat exchange using an RO membrane to obtain initially separated and concentrated seawater, which is then transported to a solar dual-heat disc evaporator.

[0008] The solar dual-heat disc evaporator includes a double-layer transparent glass interlayer, a light-absorbing water-distributing fabric, heat exchange discs, and a water distribution and collection system. The double-layer transparent glass interlayer is used for preheating the incoming water, recovering the evaporation heat, and accelerating the condensation of steam to form distilled water. The light-absorbing water-distributing fabric is used to absorb solar energy, and the heat exchange discs are used to absorb light and collect heat using a solar collector and heat the light-absorbing water-distributing fabric from the back through a heat exchange medium. This allows the concentrated brine after the initial separation and concentration to undergo short-path distillation, and after a second separation and concentration, ultra-concentrated seawater is obtained and transported to the wind-solar dual-energy sea salt drying system. The condensate is then pumped into the heat dissipation tank of the wind-solar dual-energy sea salt drying system.

[0009] The solar-wind dual-energy sea salt drying system includes a sunroom, a chimney-type hot airflow ventilation system, drying curtains, a salt collection and filtration water circulation system, and a heat dissipation water tank. The heat dissipation water tank is used to receive the condensate from the solar dual-heat plate evaporator and transport it to the drying curtains for drying. The drying curtains are set inside the sunroom and are used to further dry and crystallize the concentrated brine after secondary separation by sun drying or air drying. The salt collection and filtration water circulation system is used to receive the concentrated brine dripping from the drying curtains to form a circulating spray and transport the solid salt to the dryer for drying.

[0010] Furthermore, the dual-bearing truss-type wind power generation system includes a photovoltaic glass cyclone tower, a wind turbine, a generator, and a central shaft of the wind turbine. A photovoltaic panel is installed on the top of the photovoltaic glass cyclone tower, and a wind turbine is located at its center. The wind turbine includes a rotating spindle, a truss, bearings, and blades. The middle part of the rotating spindle is rotatably connected to the central shaft of the wind turbine. The upper end of the truss is rotatably connected to the upper end of the central shaft of the wind turbine via bearings, and the lower end is fixedly connected to the rotating spindle. Blades are installed at each corner of the truss. Multiple photovoltaic glass cyclone plates are installed on the outer side of the photovoltaic glass cyclone tower. The photovoltaic glass cyclone plates are inclined inwards towards the blades, and their positions correspond to the blades. The photovoltaic panel and the photovoltaic glass cyclone plates are used for power generation and for converging wind to one side of the blades to form a turbine-like spiral thrust, which drives the blades from the windward side of the wind turbine to rotate the wind turbine. The wind turbine is used to drive the rotating spindle to rotate around the central shaft of the wind turbine via the truss and, through gear transmission, to drive the rotor of the generator to rotate and generate electricity. Furthermore, the blade includes two vertically arranged air guide plates, which are inclined to each other to form a trumpet shape. The gap between the two ends of the two air guide plates forms an air inlet and an air outlet. The width of the air inlet is greater than the width of the air outlet. The air guide plate on the side of the air inlet closer to the truss extends outward compared to the other air guide plate to guide the air into the air inlet.

[0011] Furthermore, the sunroom is made of transparent glass and has a chimney-type hot airflow guide tube at the top. The salt collection and filtration circulation system includes an ultra-concentrated brine pipe. The inlet of the heat dissipation tank is connected to the ultra-concentrated brine outlet of the solar dual-heat plate evaporator, and the outlet of the heat dissipation tank is connected to the inlet of the ultra-concentrated brine pipe. The ultra-concentrated brine pipe is horizontally positioned above the interior of the sunroom, with multiple outlets evenly distributed on its outer side. Multiple drying curtains are hung outside the ultra-concentrated brine pipe, and a water storage tank is located below the drying curtains. A heating pipe is installed in the water storage tank. The inlet of the water storage tank is connected to the outlet of the distilled water pipe of the solar dual-heat plate evaporator, and the inlet of the heating pipe is connected to the hot water pipe of the solar collector circulation pipe. The outlet returns to the inlet of the solar collector circulation pipe.

[0012] Furthermore, the sunroom includes a PC sheet roof, a chimney-style hot airflow guide tube, a glass curtain wall, glass mounting keel, and a louvered exhaust system.

[0013] Furthermore, the salt collecting plate has sloping sides, and multiple heating tubes are arranged side by side on the lower surface of the salt collecting plate. Multiple strip plates are evenly and vertically arranged on the upper surface of the sloping sides of the salt collecting plate.

[0014] The beneficial effects of this invention are as follows:

[0015] Compared with existing conventional single wind power generation or photovoltaic power generation, the wind and solar dual-energy tower used in this invention integrates vertical axis wind power generation and photovoltaic power generation into one multi-layer tower, requiring only one set of energy storage and its control system, reducing the footprint by more than 30% and investment costs by more than 20%.

[0016] This invention adopts a dual-bearing truss-type wind power generation system, which can automatically adjust the generator load according to the change of wind force to maintain the stability of power generation efficiency. The truss type is a rigid structure with high strength and stability, and is easy to install with low vibration and noise. By setting power generation glass cyclone plates on the power generation glass cyclone tower, it can not only collect and concentrate wind, but also generate solar power. The light-transmitting design of the power generation glass will not cause light blockage between adjacent power generation glass cyclone plates.

[0017] 1. Compared with existing seawater desalination systems, the present invention employs a layered and graded system of seawater pretreatment, hot water RO membrane filtration, solar dual-heat plate evaporator, and wind-solar dual-energy sea salt drying system to remove impurities from seawater and extract drinking water and refined sea salt. This not only yields the benefits of sea salt but also avoids the pollution caused by the discharge of concentrated brine into the sea. The hot water RO membrane filtration uses solar collectors for heating and wind-solar dual-energy power supply, resulting in zero carbon emissions and increasing membrane flux by more than 50%. The solar dual-heat plate evaporator uses a new type of light-absorbing, heat-collecting, and heat-conducting material, which can both absorb light and collect heat for short-path distillation and use heat exchange plates in the solar collector for back-side heating for short-path distillation. Furthermore, the double-layer transparent glass interlayer allows for counter-current water intake to recover the latent heat of vaporization, preheating the seawater to be distilled while accelerating steam condensation.

[0018] 2. This invention employs a chimney-type hot airflow guide tube to achieve secondary concentration of seawater through spraying. The sea salt crystallizes and precipitates through natural sun-drying and air-drying via a sunroom and high moisture-dissipating fiber textiles. The sunroom's heat-gathering effect (heat source from sunlight, solar collectors, concentrated seawater, and a hot freshwater tank) and the guide tube enhance the flow of hot air. As solid salt crystallizes on the drying cloth, it accumulates over time and falls onto a salt-collecting plate under wind conditions. The sloping salt-collecting plate expands its surface area. Heating pipes further heat and dry the crystallized salt and concentrated brine on the plate. The crystallized salt on the plate can then be collected and stored. Furthermore, the integrated cooling water tank and salt-collecting system utilize waste heat while reducing floor space. The entire sea salt production process uses green energy and is unaffected by weather, making it more efficient than sun-dried sea salt.

[0019] 3. This invention uses a microgrid system built with distributed clean energy to achieve zero-carbon seawater desalination and salt extraction. The heat from a single clean energy heating process is reused three times, resulting in high energy efficiency. It has low investment costs, no direct operating costs, and no pollution. It can supply water and electricity around the clock and can also produce water and salt on a large scale, resulting in significant economic and environmental benefits. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the wind and solar dual-energy seawater desalination system of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the wind and solar power tower.

[0022] Figure 3 This is a schematic diagram of the front structure of the wind and solar power tower.

[0023] Figure 4 This is a schematic diagram of a dual-bearing truss-type wind power generation system.

[0024] Figure 5This is a schematic diagram of a membrane desalination system.

[0025] Figure 6 This is a schematic diagram of a wind-solar dual-energy disc evaporation system.

[0026] Figure 7 This is a schematic diagram of a wind and solar dual-energy sea salt drying system.

[0027] Figure 8 This is a structural schematic diagram of the sunroom's elevation.

[0028] Figure 9 Schematic diagram of a solar-wind dual-energy salt extraction dry salt system;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1-1. Photovoltaic panel; 1-2. Wind and solar dual-energy tower; 1-2-1. Power generation glass panel; 1-3. Wind turbine; 1-3-1. Truss; 1-3-2. Wind blade; 1-3-3. Wind turbine central shaft; 1-3-4. Speed ​​increaser; 1-3-5. Wind turbine fixed support; 1-4. Heat pump; 1-5. Water storage tank; 1-6. Hot water pipe; 1-7. Return water pipe; 2-1. Water pump; 2-2. Primary filtration system; 2-3. Heat exchanger; 2-4. Secondary sand filtration system; 2-5. Pressure booster; 2-6. RO membrane permeation system; 2-6-1. Fresh water pipe; 2-6-2. Concentrated brine pipe; 3-1. Concentrated brine storage tank; 3-2. Water pump; 3-3. Solar dual-heating disc evaporator; 3-3-1. Solar energy 3-3-2 Heat exchange plates; 3-3-3 Ultra-concentrated brine pipes; 3-3-4 Distilled water pipes; 3-3-5 Solar collector circulation pipe outlet pipes; 3-3-6 Solar collector circulation pipe return pipes; 4-1 Heat dissipation tank; 4-2 Water pump; 4-3 Wind and solar dual-energy salt drying room; 4-3-1 Chimney-type hot airflow guide tube; 4-3-2 PC sheet sunroom; 4-3-3 Ultra-concentrated brine pipes; 4-3-4 Concentrated brine evaporation curtain; 4-3-5 Salt collection plate; 4-3-6 Heating pipes; 4-3-7 Water storage tank; 5-1 PC sheet roof; 5-2 Chimney exhaust system; 5-3 Glass curtain wall; 5-4 Glass installation keel; 5-5 Louver exhaust system Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1As shown, the zero-carbon seawater desalination system of the present invention includes: a wind-solar dual-energy tower, a membrane seawater desalination system, a solar dual-heat disc evaporator, and a wind-solar dual-energy sea salt drying system, as detailed below:

[0033] 1. Wind and Solar Twin Towers

[0034] like Figure 2-4 As shown, the wind-solar dual-energy tower includes a dual-bearing truss-type wind power generation system and a photovoltaic power generation system. Specifically, it includes photovoltaic panels 1-1, a wind-solar dual-energy tower 1-2, and a power generation glass panel 1-2-1. The dual-bearing truss-type wind power generation system includes a wind turbine 1-3, a truss 1-3-1, wind blades 1-3-2, a wind turbine central shaft 1-3-3, a speed increaser 1-3-4, a wind turbine fixed support 1-3-5, a heat pump 1-4, a water storage tank 1-5, a hot water pipe 1-6, and a return water pipe 1-7. The solar collector is used to provide a heat source for RO membrane hot water filtration through a heat exchanger. The dual-bearing truss-type wind power generation system adopts a wind-following variable load and a spring-type strong wind variable resistance system, which can automatically adjust the generator load according to the wind force. It is used to adjust the sail to automatically increase the wind resistance when the wind force exceeds the preset maximum threshold, and adjust the sail to automatically reduce the wind resistance when the wind force is lower than the preset minimum threshold.

[0035] The wind-solar dual-energy tower leverages the complementarity of solar and wind energy across seasons and time of day. Energy storage devices are installed alongside the tower, employing integrated wind-solar-storage technology to reduce the volatility and intermittency of solar and wind energy, thus improving power generation quality. As a green and renewable distributed energy source, it generates and uses power locally, reducing transmission and transformation investment and line losses, and does not cause fluctuations or impacts on the power grid, ensuring safety and reliability.

[0036] 1.1 Wind power generation

[0037] Utilizing the fluidity and directional nature of wind energy, a wind-gathering cyclone technology is employed to concentrate wind power to one side, generating thrust and reducing drag from the swirling side, thereby improving wind energy utilization efficiency by over 20%. Rated generating capacity of the wind turbine: 100kW.

[0038] 1.2 Photovoltaic power generation

[0039] The photovoltaic panel's shape can change with the viewing angle, resulting in a unique design. Rated photovoltaic power generation: 100kW.

[0040] 2. Membrane-based seawater desalination system

[0041] like Figure 5As shown, the membrane-based seawater desalination system includes a water pump 2-1, a primary filtration system 2-, a heat exchanger 2-, a secondary sand filtration system 2-4, a pressurization device 2-5, an RO membrane permeation system 2-6, a freshwater pipe 2-6-1, and a concentrated brine pipe 2-6-2. The membrane-based seawater desalination integrated system is based on a modular design concept, which makes the space configuration more reasonable and the construction more convenient and faster. It can be integrated in skid-mounted or containerized manner, or it can be integrated in the plant and matched with a microgrid as needed. It can produce about 50 to 2000 tons of high-quality freshwater per day, which can be used as a source of drinking water, bottled water, or barrelled water.

[0042] 3. Solar dual-heating disc evaporator

[0043] like Figure 6 As shown, the solar dual-heating disc evaporator system includes a concentrated brine storage tank 3-1; a water pump 3-2; a solar dual-heating disc evaporator 3-3; a double-layer glass interlayer 3-3-1; heat exchange discs 3-3-2; an ultra-concentrated brine seawater pipe 3-3-3; a distilled water pipe 3-3-4; a solar collector circulation pipe outlet pipe 3-3-5; and a solar collector circulation pipe return pipe 3-3-6.

[0044] 4. Integrated Salt Extraction and Dry Salt System

[0045] like Figure 7-9 As shown, the integrated salt extraction and drying system includes a heat dissipation water tank 4-1, a water pump 4-2, a wind and solar dual-energy salt drying room 4-3, a chimney-type hot airflow guide tube 4-3-1, a PC board sunroom 4-3-2, an ultra-concentrated brine pipe 4-3-3, a concentrated brine evaporation curtain 4-3-4, a salt collection plate 4-3-5, a heating pipe 4-3-6, a water storage tank 4-3-7, a PC board roof 5-1, a chimney exhaust system 5-2, a glass curtain wall 5-3, a glass installation keel 5-4, and a louver exhaust system 5-5.

[0046] 4.1 Solar-Wind Dual-Energy Salt Extraction Dry Salt System

[0047] Secondary concentrated seawater is sprayed through a sunroom and high-moisture-dissipation textiles to induce sea salt crystallization and precipitation through the following methods:

[0048] Natural sun drying: Utilizing solar energy to evaporate moisture from the dry salt system.

[0049] Natural air drying: using wind energy to remove moisture from the salt drying system.

[0050] By utilizing the heat-concentrating effect of the sunroom (heat sources include sunlight, solar collectors, concentrated seawater, and a hot freshwater tank) and the flow guide tube, the flow of hot air can be enhanced, accelerating the evaporation of moisture in the dry salt system.

[0051] The entire process of sea salt production uses green energy, and the salt production is not affected by the weather, making it more efficient than sun-dried sea salt.

[0052] This invention employs a comprehensive thermal circulation system: one solar collector provides heat to the hot RO desalination water via an insulated water tank. The heated seawater increases membrane flux and reduces energy consumption in the desalination system. The hot RO concentrated seawater produced from the desalination enters the salt extraction system, facilitating water evaporation. Another solar collector sequentially provides heat to the solar dual-heat plate evaporator and the dry salt system, further accelerating water evaporation in the salt extraction system. After solid salt crystallizes on the drying cloth surface, it accumulates over time and, under wind conditions, falls down the slope into the salt collection and filtration water circulation system, where it is then dried in a dryer.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A zero-carbon seawater desalination and salt extraction system, characterized in that, This includes a wind-solar dual-energy tower, a membrane seawater desalination system, a solar dual-heat plate evaporator, and a wind-solar dual-energy sea salt drying system; The wind-solar dual-energy tower includes a dual-bearing truss-type wind power generation system and a photovoltaic power generation system. The wind power generation system and the photovoltaic power generation system are used to provide electrical energy. The photovoltaic power generation system includes a solar collector and a matching hot water tank. The solar collector is used to heat the matching hot water tank with solar energy. The matching hot water tank is used to provide a heat source for the hot water RO membrane filtration system through a heat exchanger. The dual-bearing truss-type wind power generation system adopts a wind-following variable load and a spring-type strong wind resistance system, which can automatically adjust the generator load according to the wind force. When the wind force exceeds a preset maximum threshold, the wind turbine is adjusted to automatically increase the wind resistance, and when the wind force is lower than a preset minimum threshold, the wind turbine is adjusted to automatically reduce the wind resistance. The membrane-based seawater desalination system includes a pretreatment system, a heat exchanger, and a hot water RO membrane filtration system. The pretreatment system includes a primary filtration system and a secondary sand filtration system connected in sequence. The inlet of the pretreatment system is connected to seawater, and the outlet is connected to the inlet of the heat exchanger tube layer. The inlet of the heat exchanger shell layer is connected to hot water heated by the solar collector, and the outlet of the shell layer is used to return the water to the matching hot water tank of the solar collector. The outlet of the heat exchanger tube layer is connected to the hot water RO membrane filtration system, which is used to perform RO membrane filtration on the seawater after heat exchange to obtain seawater that has been initially separated and concentrated, and then transported to the solar dual-heat disc evaporator. The solar dual-heat disc evaporator includes a double-layer transparent glass interlayer, a light-absorbing water-distributing fabric, heat exchange discs, and a water distribution and collection system. The double-layer transparent glass interlayer is used to preheat the incoming water, reuse the evaporation heat, and accelerate the formation of condensed water from the condensing steam. The light-absorbing water-distributing fabric is used to absorb solar energy. The heat exchange discs are used by the solar collector to absorb and collect heat, and the light-absorbing water-distributing fabric is heated from the back by the heat exchange medium. This allows the concentrated brine after the initial separation and concentration to undergo short-path distillation, and after a second separation and concentration, ultra-concentrated seawater is obtained and transported to the wind-solar dual-energy sea salt drying system. The ultra-concentrated seawater is then pumped into the heat dissipation tank of the wind-solar dual-energy sea salt drying system. The solar-wind dual-energy sea salt drying system includes a sunroom, a chimney-type hot airflow ventilation system, drying curtains, a salt collection and filtration circulation system, and a heat dissipation tank. The heat dissipation tank receives ultra-concentrated seawater from the solar dual-heat plate evaporator and transfers it to the drying curtains for drying. The drying curtains are located inside the sunroom and are used to further dry or air-dry the ultra-concentrated seawater obtained after secondary separation and concentration, causing the sea salt to crystallize. The salt collection and filtration circulation system receives the concentrated brine dripping from the drying curtains to form a circulating spray, and also receives solid salt falling from the drying curtains with the wind, transporting the solid salt to a dryer for drying. The dual-bearing truss-type wind power generation system includes a photovoltaic glass cyclone tower, a wind turbine, a generator, and a central shaft of the wind turbine. A photovoltaic panel is installed on the top of the photovoltaic glass cyclone tower, and a wind turbine is located at its center. The wind turbine includes a rotating spindle, a truss, bearings, and blades. The middle part of the rotating spindle is rotatably connected to the central shaft of the wind turbine. The upper end of the truss is rotatably connected to the upper end of the central shaft of the wind turbine via bearings, and the lower end is fixedly connected to the rotating spindle. Blades are installed at each corner of the truss. Multiple photovoltaic glass cyclone plates are installed on the outer side of the photovoltaic glass cyclone tower, tilting inwards towards the blades, and the positions of the photovoltaic glass cyclone plates and the blades correspond. The photovoltaic panel and the photovoltaic glass cyclone plates are used for power generation and to gather wind to one side of the blades to form a turbine-like spiral thrust, which drives the blades from the windward side of the wind turbine to rotate the wind turbine. The wind turbine is used to drive the rotating spindle to rotate around the central shaft of the wind turbine via the truss, and through gear transmission, drives the rotor of the generator to rotate and generate electricity.

2. The zero-carbon seawater desalination and salt extraction system according to claim 1, characterized in that, The blade includes two vertically arranged air guide plates, which are inclined to each other to form a trumpet shape. The gap between the two ends of the air guide plates forms an air inlet and an air outlet. The width of the air inlet is greater than the width of the air outlet. The air guide plate on the side of the air inlet closer to the truss extends outward compared to the other air guide plate to guide the air into the air inlet.

3. The zero-carbon seawater desalination and salt extraction system according to claim 1, characterized in that, The sunroom is made of transparent glass and has a chimney-style hot airflow guide tube at the top. The salt collection and filtration circulation system includes an ultra-concentrated brine pipe. The inlet of the heat dissipation tank is connected to the ultra-concentrated brine outlet of the solar dual-heat plate evaporator, and the outlet of the heat dissipation tank is connected to the inlet of the ultra-concentrated brine pipe. The ultra-concentrated brine pipe is horizontally installed above the interior of the sunroom, with multiple outlets evenly distributed on its outer side. Multiple drying curtains are hung outside the ultra-concentrated brine pipe. A water storage tank is installed below the drying curtains, and a heating pipe is installed in the water storage tank. The inlet of the water storage tank is connected to the outlet of the distilled water pipe of the solar dual-heat plate evaporator. The inlet of the heating pipe is connected to the hot water pipe of the solar collector circulation pipe, and the outlet is connected to the inlet of the solar collector circulation pipe.

4. The zero-carbon seawater desalination and salt extraction system according to claim 3, characterized in that, The sunroom includes a PC sheet roof, a chimney-style hot airflow guide tube, a glass curtain wall, glass mounting keel, and a louvered exhaust system.

5. The zero-carbon seawater desalination and salt extraction system according to claim 4, characterized in that, The wind and solar dual-energy sea salt drying system also includes a salt collection plate with sloping sides. Multiple heating tubes are arranged side by side on the lower surface of the salt collection plate, and multiple strip plates are evenly and vertically arranged on the upper surface of the sloping sides of the salt collection plate.

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