CN212387762U

CN212387762U - Disc-type spray solar humidifying-dehumidifying type brackish water desalting device

Info

Publication number: CN212387762U
Application number: CN201922238355.5U
Authority: CN
Inventors: 赵頔; 丁谋谋; 张宝匀; 武晓适
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2021-01-22
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a disc-type spraying solar humidifying-dehumidifying type brackish water desalting device. The device takes a humidification-dehumidification technology as a core, and aims to provide a brackish water desalination device which completely takes solar energy as energy and does not need operation cost. This device is atomized after taking out the shower nozzle with the bitter through the centrifugal pump, is heated under the sunlight and produces vapor, and vapor condenses in getting into the condensation dish through the wet air pipe under the fan effect and produces fresh water, and noncondensable gas aerates bitter in the device under the fan effect, promotes bitter evaporation. The device organically combines a spray evaporation technology, a humidification-dehumidification technology and a solar disc distiller, has the advantages of simple structure, energy conservation, environmental protection, low cost and good effluent quality, is suitable for areas with sufficient solar energy resources, deficient fresh water resources and abundant brackish water, and meets the requirements of local fresh water resources.

Description

Disc-type spray solar humidifying-dehumidifying type brackish water desalting device

Technical Field

The utility model relates to a brackish water desalination technical field and application system especially relate to a disk spraying solar energy humidification-dehumidification type brackish water desalination device, use solar energy as the energy completely, extensively be applicable to the area that solar energy resource is sufficient, fresh water resource is deficient and brackish water is abundant, the device structure is simple and easy, and is energy-concerving and environment-protective, low cost, it is good to go out water quality of water, provides wide development prospect for handling the brackish water on a large scale in the future.

Background

China is a country with extremely scarce fresh water resources, and the population quantity of China is the first in the world so far, but the per-capita occupancy of fresh water resources is 109, which is less than one fourth of the per-capita level in the world. With the rapid increase of world population, the promotion of industrial modernization and the rapid development of social economy, the demand of water resources is continuously increased. Brackish water is a water resource with fluoride content more than 1.0mg/L, mineralization degree more than 1000mg/L, alkalinity more than hardness and PH more than 7, and can not be directly utilized by human beings due to high-value mineralization degree. The brackish water is generally converted from underground water available in basins and surface fresh water at river sources, is rich in a plurality of mineral elements and has great potential utilization value, so that the method has important practical significance for resource protection and reasonable development and utilization for purifying and treating the brackish water to meet the requirement of drinking water.

In the face of the current situation of extremely deficient freshwater resources in China, the supply of fresh water with sufficient quantity and high quality to meet the requirements of human drinking water is very important for remote northwest towns and rural areas, especially poor and laggard areas with underdeveloped technology and economy, and the brackish water desalination becomes an important direction and an effective measure for solving the problem of freshwater resource shortage, so that the exploration of a suitable brackish water desalination process according to regional hydrogeological characteristics and underground water circulation conditions is urgent. Meanwhile, the energy problem in the world is increasingly sharp, and the conventional energy sources such as coal, petroleum, natural gas and the like are limited in reserves and cannot be regenerated, so that the increasing requirements of human beings cannot be met. Solar energy is a natural, clean and pollution-free renewable primary energy source, light energy is converted into heat energy through a solar device, vapor is generated after brackish water is heated, and fresh water is obtained after the vapor is condensed, so that the purpose of desalting the brackish water is achieved.

The utility model discloses having comprehensively considered present energy situation and mankind's urgent demand to the fresh water, having designed a disk spraying solar energy humidification-dehumidification type brackish water desalination device, extensively be applicable to the area that solar energy resource is sufficient, fresh water resource is deficient and brackish water content is abundant, satisfy local fresh water resource's demand.

SUMMERY OF THE UTILITY MODEL

In order to alleviate the current situation of current fresh water resource shortage, the utility model provides a dish spraying solar energy humidification-dehumidification type brackish water desalination device, the device follow solar energy distillation thinking and set out, combines spray evaporation technique, humidification-dehumidification technique and solar energy dish distiller, design innovation organically. The device realizes the humidification-dehumidification function through the centrifugal pump, the atomizing spray head, the fan and the condensation disc, promotes the evaporation and condensation of the brackish water, and improves the water production efficiency of the device. The device has the advantages of simple structure, energy conservation, environmental protection, low cost and good effluent quality, and is suitable for areas with sufficient solar energy resources, deficient fresh water resources and abundant bitter and salty water.

In order to achieve the purpose, the utility model provides a disk-type spraying solar humidification-dehumidification type brackish water desalination device, wherein include under the centrifugal pump effect, brackish water in the disk-type solar evaporation water tank is atomized by the shower nozzle through the water suction pipe, is heated under the sunlight irradiation and produces vapor, vapor gets into the condensation dish through the humid air pipe under the effect of fan and condenses, the device is aerated to the brackish water after the noncondensable gas passes through dry air pipe and aeration pipe under the effect of fan, the aeration hole sets up in aeration pipe both sides, symmetrical evenly distributed, the production and the circulation of vapor are accelerated in the aeration; the fresh water collecting tank is circular and is arranged on the inner wall of the disc type solar evaporation water tank, the fresh water is collected to the condensing disc at the lowest point of the collecting tank through the communicating pipe, and the fresh water in the condensing disc are collected together at the fresh water outlet; the condensing disc is circular, the shell can be made of copper, white iron and aluminum, and radiating fins or radiating nets made of the same material are arranged on the upper part and the lower part of the shell, so that the condensing disc can radiate heat outwards and reduce the temperature, and the condensation of water vapor is promoted; the solar cell panel is the arc, settles in the insulation material outside, for centrifugal pump and fan energy supply, has improved the utilization ratio of sunlight.

The upper part of the device is provided with an inclined transparent cover plate made of glass plates, acrylic plates and PVC plates; meanwhile, the bottom of the inner side of the disc type solar evaporation water tank can be provided with a black light absorption and heat collection coating, so that the sunlight absorption rate is increased, and brackish water is heated and evaporated; 2 atomizing nozzles are symmetrically arranged, 3 atomizing nozzles are arranged at an angle of 120 degrees with each other, and 4 atomizing nozzles are arranged at an angle of 90 degrees with each other, so that the heating area of the brackish water is increased while the spraying amount of the nozzles is ensured; the bottom surface and the side surface of the disc type solar evaporation water tank are designed for heat preservation, so that heat loss is reduced, brackish water is heated and evaporated, and ceramic fibers, an aluminum foil bubble heat insulation film and an aerogel heat insulation blanket can be selected as heat preservation materials.

The disc type solar evaporation water tank is provided with the emptying valve, so that the concentrated water with high salt content can be discharged conveniently after the operation of the device is finished.

The utility model discloses the effect that the system can reach:

1. the utility model provides a pair of disk spraying solar energy humidification-dehumidification type brackish water desalination device can make brackish water form vapor through solar energy and atomizer, produces fresh water behind the vapor condensation. The device has simple structure, energy conservation, environmental protection, low cost and good effluent quality, and can solve the problems of shortage of fresh water resources, prominent drinking water problem, unavailable bitter water and the like in large-area regions including arid and semiarid basins in the northwest of China.

2. The device has high fresh water output efficiency, and the daily water yield can reach 4.0L/m²Left and right. When the lighting area of the device is 2.0-3.0 m²In time, the water yield can meet the fresh water demand of a family of four.

3. The quality of the fresh water produced by the device is good, the TDS is about 16ppm, and the content of anions and cations completely accords with and is superior to the national GB5749-2006 sanitary Standard for Drinking Water.

Drawings

FIG. 1 is a schematic view of the front structure of a disk-type spray solar humidification-dehumidification type brackish water desalination device

FIG. 2 is a schematic side view of a disc-type spray solar humidification-dehumidification type brackish water desalination device

The numbers in the figures illustrate the following:

1 water inlet valve, 2 disc type solar evaporation water tanks, 3 overflow pipes, 4 black light absorption heat collection coatings, 5 water absorption pipes, 6 centrifugal pumps, 7 atomizing nozzles, 8 wet air pipes, 9 fans, 10 condensation discs, 11 radiating fins, 12 fresh water outlets, 13 dry air pipes, 14 aeration pipes, 15 heat insulation materials, 16 transparent cover plates, 17 fresh water collecting tanks, 18 communicating pipes, 19 solar cell panels and 20 emptying valves

Detailed Description

The structure of the disk-type spray solar humidifying-dehumidifying type brackish water desalting device of the utility model is explained by combining the attached drawings.

The brackish water enters the disc type solar evaporation water tank 2 through the water inlet valve 1, and when the water level overflows the overflow hole and flows out of the overflow pipe 3, the water inlet valve 1 is closed to stop water inlet. Sunlight penetrates through the transparent cover plate 16 and brackish water, the brackish water is irradiated onto the black coating 4 and absorbed, the brackish water is heated and simultaneously generates steam, the heated brackish water is pumped to the atomizing spray head 7 through the water suction pipe 5 by the centrifugal pump 6 and then atomized, the atomized small liquid drops generate steam under the irradiation of the sunlight, the steam enters the condensation disc 10 through the wet air pipe 8 under the action of the fan 9 and is condensed into fresh water, uncondensed gas returns to the evaporation water tank through the dry air pipe 13 and the aeration pipe 14 in sequence under the action of the fan to aerate the brackish water, the generation of the steam is accelerated, and meanwhile, the cycle process of humidification and dehumidification is promoted. Part of the vapor is contacted with the inclined transparent cover plate 16 of the device and then condensed to form fresh water, the fresh water is collected in the fresh water collecting tank 17 along the inclined cover plate and enters the condensation tray 10 through the communicating pipe 18, and finally the fresh water and the fresh water in the condensation tray are discharged through the fresh water outlet 12.

The cooling fins 11 are arranged on the upper part and the lower part of the shell of the condensation plate, so that the condensation plate can dissipate heat and reduce temperature, and the condensation of water vapor is promoted. Arc solar cell panel 19 settles in the outside of insulation material 15, for centrifugal pump and fan energy supply, has improved the utilization ratio of sunlight.

After the device is operated, the emptying valve 20 is opened to empty the concentrated water with higher salt content in the evaporation water tank.

The device has simple structure and energy conservationEnvironmental protection, low cost, good effluent quality and high fresh water output efficiency, and the daily water output can reach 4.0L/m²Left and right. The effluent quality is detected by an ion chromatograph, and the detection result shows that TDS is 16ppm and the effluent cation Na⁺、NH₄ ⁺、K⁺、Mg²⁺、Ca²⁺And anion Cl^-、SO₄ ^2-、NO₃ ^-、NO₂ ^-、F^-The concentration completely accords with and is superior to the national GB5749-2006 sanitary Standard for Drinking Water.

Claims

1. A disk-type spray solar humidification-dehumidification type brackish water desalination device is characterized by comprising: the solar water evaporation device comprises a disc type solar water evaporation tank (2), wherein a heat insulation material (15) and a solar cell panel (19) are arranged on the outer side of the disc type solar water evaporation tank, a black light absorption and heat collection coating (4) is attached to the bottom of the disc type solar water evaporation tank, and an inclined transparent cover plate (16) is arranged on the upper part of the disc type solar; the atomizing spray head (7) is connected with the water suction pipe (5) through a centrifugal pump (6), water vapor enters the condensation disc (10) through a wet air pipe (8) under the action of a fan (9) for condensation, and uncondensed gas aerates brackish water in the device through a dry air pipe (13) and an aeration pipe (14); the fresh water collecting tank (17) is communicated with the condensing disc (10) through a communicating pipe (18); the water inlet valve (1) is controlled by the overflow pipe (3) to finish water inlet, and the residual concentrated water with high salt content is discharged by the emptying valve (20).

2. The disc-type spray solar humidification-dehumidification type brackish water desalination plant of claim 1, wherein: the device uses a transparent cover plate, and the material can be a glass plate, an acrylic plate and a PVC plate; and meanwhile, the black light absorption and heat collection coating can be selected at the bottom of the inner side of the evaporation water tank, so that the sunlight absorption rate is increased, and the brackish water is heated, heated and evaporated.

3. The disc-type spray solar humidification-dehumidification type brackish water desalination plant of claim 1, wherein: the atomizing spray heads can be set to be 2 symmetrically arranged, 3 mutually arranged at 120 degrees and 4 mutually arranged at 90 degrees, so that the spray amount of the spray heads is ensured, and the heated area of the bitter water is increased.

4. The disc-type spray solar humidification-dehumidification type brackish water desalination plant of claim 1, wherein: solar cell panel is the arc, settles in the heated board outside, for centrifugal pump and fan energy supply, has improved the utilization ratio of sunlight.

5. The disc-type spray solar humidification-dehumidification type brackish water desalination plant of claim 1, wherein: the bottom surface and the side surface of the disc type solar evaporation water tank are designed for heat preservation, so that heat loss is reduced, and the bitter water is heated, heated and evaporated; the heat insulating material can be ceramic fiber, aluminum foil bubble heat insulating film, aerogel heat insulating blanket.

6. The disc-type spray solar humidification-dehumidification type brackish water desalination plant of claim 1, wherein: the condensation dish is circular, and the shell material can be copper, galvanized iron, aluminium, and the fin or the radiator-grid of same material are settled down to the shell, are favorable to the condensation dish to the cooling of dispelling the heat outward, promote the condensation of vapor.

7. The disc-type spray solar humidification-dehumidification type brackish water desalination plant of claim 1, wherein: the fresh water collecting tank is circular and is arranged on the inner wall of the disc type solar evaporation water tank, and the fresh water is collected to the condensation disc at the lowest point of the fresh water collecting tank through the communicating pipe and is discharged together with the fresh water in the condensation disc.

8. The disc-type spray solar humidification-dehumidification type brackish water desalination plant of claim 1, wherein: the aeration pipe is internally filled with uncondensed gas, the aeration holes are arranged on two sides of the aeration pipe and are symmetrically and uniformly distributed, and the aeration is used for accelerating the generation and circulation of water vapor.