CN211056755U - Low-temperature efficient atomization injection seawater desalination device - Google Patents

Abstract

The utility model relates to a high-efficient atomizing of low temperature is drawn and is penetrated sea water desalination device is applicable to the sea water desalination field. The device includes: the device comprises a low-pressure evaporation chamber, a solar heating device, a high-efficiency atomizing device, a gas-liquid separation device and a steam injection condensing device. The process flow comprises the following steps: the heated seawater is atomized by the high-efficiency atomization device, part of the atomized seawater is changed into vapor, and other droplets of the seawater are isolated by the gas-liquid separation device, and then the vapor is changed into fresh water for life through ejection and condensation. The device makes full use of low-grade heat energy, has low energy consumption, utilizes renewable energy sources to reduce pollution, has low manufacturing cost, high yield and salt yield, is suitable for large-scale popularization, and is extremely favorable for daily life of residents in coastal areas and use of small and medium-sized fishing boats in coastal areas.

Description

A low-temperature and high-efficiency atomization ejection seawater desalination device

technical field

The utility model relates to the technical field of seawater desalination, in particular to a device for low-temperature and high-efficiency atomization ejection for seawater desalination.

Background technique

my country's fresh water resources are scarce, accounting for only 1/30 of the world's per capita level, and nearly 70% of the country's urban water cannot be effectively guaranteed. In recent years, with the scarcity and pollution of water resources, the lack of fresh water in coastal areas such as Zhejiang, Fujian and Guangdong has become an important obstacle to the sustainable development of their economies.

At present, solar thermal compression mechanical vapor recompression seawater desalination devices are basically composed of a large number of equipment such as solar collectors, steam ejectors, compressors, heating chambers, evaporators, heat exchangers, etc. The complex structure and large area will limit use of these techniques.

The existing seawater desalination methods in the industry are mainly two categories: distillation method and reverse osmosis method. The distillation method is mainly used in super-large seawater desalination treatment. The equipment is large and the cost of the device is high. Moreover, the existing combined device needs to use electricity and heat at the same time, and such devices are generally combined with power plants, which is not conducive to coastal residents. Living promotion and application of small and medium coastal fishing boats. The current obstacles to the reverse osmosis method are the short service life of the membrane, the high cost of membrane replacement, and the high requirements for seawater pretreatment. The reverse osmosis membrane, high-pressure pump, and energy recovery device need to be replaced regularly, which is troublesome to operate.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the above-mentioned seawater desalination device, the utility model provides a low-temperature and high-efficiency atomization and ejection seawater desalination device that fully utilizes low-grade heat sources, has low energy consumption, small volume and large processing capacity. The device includes: a solar heating device 1; low pressure gasification chamber 2; concentrated salt liquid pool 3; seawater raw material pool 4; fresh water collection box 5; steam condensation ejection device 6; high-efficiency atomizing nozzle 105; seawater gasification heater S1; gas-liquid separation device S2; Enhanced atomizing heater S3.

The process flow is as follows: the preheated seawater is sprayed into a mist through the high-efficiency atomizing nozzle 105. After the seawater is atomized, part of it becomes water vapor, and the rest is seawater droplets. It is isolated, and then the water vapor is converted into fresh water for domestic use through ejection condensation. The specific solution can be realized by the following technical means.

A low-temperature and high-efficiency atomization injection seawater desalination device includes:

The solar heating device 1 is connected to the low-pressure gasification chamber 2 for heating the low-pressure gasification chamber 2, and is connected to the water supply pipe 106 of the atomizer for preheating seawater and enhancing the atomization effect.

The low-pressure gasification chamber 2 is communicated with the concentrated brine flowing through the pipeline 103 at the left end thereof, and the atomizing nozzle 105 is arranged above it. The gas-liquid separation device S2 and the steam extraction condensing device 6 are included on the right side thereof. The gas-liquid separation device S2 is connected to the steam ejection condensing device 6, so that part of the seawater after atomization becomes water vapor and separates other seawater droplets, so that the water vapor enters the steam ejection condensing device 6 for cooling to prevent the fresh water from being polluted.

The low-pressure gasification chamber 2 is heated and gasified by using solar energy. After the seawater is heated and gasified, the concentrated salt water produced by the low-pressure gasification chamber 2 flows into the concentrated salt liquid pool 3 through the concentrated salt water through the pipeline 103, and then passes through the concentrated salt liquid pool. 3 discharge.

The high-efficiency atomizing device includes an atomizing pump 108, an atomizer water supply pipe 106, and a high-efficiency atomizing nozzle 105. The seawater passes through the atomizer water supply pipe 106 and is preheated by an enhanced atomization heater S3 to increase the temperature, and the low-pressure gasification chamber 2 The internal pressure gasification is intensified, the atomization effect is enhanced, and the gas production volume increases sharply, which effectively improves the gasification speed of the low-pressure gasification chamber 2; The separation device S2 isolates the seawater droplets to prevent the fresh water from being polluted.

The steam ejection condensing device 6, one end of the steam ejecting condensing device 6 is communicated with the low-pressure gasification chamber 2 through the air inlet pipe, and the other end is communicated with the fresh water collection tank through the fresh water flowing through the pipeline 114. The water vapor flows into the diffuser chamber B6 through the ejector nozzle B1, and is then condensed into liquid by the cooling circulating seawater in the condensation chamber B3, and flows into the fresh water collection tank through the fresh water flow pipe 114. And the connection between the steam extraction condensing device 6 and the fresh water collection chamber 5 is controlled by the hydraulic pump 115 .

The above-mentioned condensation chamber B3 is communicated with the cooling circulating seawater inflow pipe 111 and the cooling circulating seawater outflow pipe 112. The cold seawater flows into 111 from the cooling circulating seawater inflow pipe, and flows out from the cooling circulating seawater outflow pipe 112, which plays the role of condensing water vapor. And sufficient raw materials, saving energy.

The power supply and driving of the above-mentioned atomizing pump 108 and hydraulic pump 115 are selected from the wind power device 110 .

Preferably, there is a height difference H1 between the low-pressure gasification chamber 2 and the concentrated salt solution pool 3, a certain height difference H2 exists between the concentrated salt solution pool 3 and the seawater raw material pool 4, and H1>H2, using the self-gravity negative pressure of seawater to form low-pressure gas chemical chamber 2.

Preferably, the low-temperature heat source solar heating device 1 is used to heat the seawater in the low-pressure gasification chamber 2, and the temperature is controlled at 20-80°C, with low energy consumption.

Preferably, the seawater gasification heater S1 in the low pressure gasification chamber adopts a hydrocyclone spherical heater.

Preferably, the atomizing pump 108 and the hydraulic pump 115 use the wind power device 110 for power generation and driving.

Preferably, the steam injection condensation device 6 includes a spray head B1, a suction chamber B2, a diffusion chamber B6 and a condensation chamber B3.

The low-temperature and high-efficiency atomization ejection seawater desalination device provided by the present invention includes a plurality of structures: a part of which is a solar heating device 1 for evaporating seawater and enhances the atomization effect; a part is a wind power device 110, which is used to feed the hydraulic pump 115 It is powered by the atomizing pump 108 to provide power for it; a part is a high-efficiency atomizing device. The atomizing pump 108 draws seawater and flows through the atomizer water supply pipe 106 to preheat, and then sprays through the high-efficiency atomizing nozzle 105 to become mist-like small water droplets ; One part is the gas-liquid separation device S2, which makes part of the seawater atomized into water vapor and separated from other seawater droplets, so that the water vapor enters the ejection device for cooling to prevent the fresh water from being polluted; the other part is the steam ejection condensing device 6. Cool the water vapor into liquid water, and finally the fresh water flows into the fresh water collection tank 5 for living use.

Compared with the prior art, the utility model has the following advantages and beneficial effects: when the low-temperature and high-efficiency ejection seawater desalination device is used for seawater desalination, the seawater self-weight negative pressure vacuum treatment method is used in comparison with the traditional distillation method with high energy consumption and high cost. In other words, it can make full use of low-grade thermal energy, is simple and easy to operate, has low operating costs, does not require large investment, and can be widely promoted. Moreover, the concentration rate of seawater in the atomization process is very high, which can better precipitate salt. In addition, the water supply pipe 106 of the atomizer is used to preheat with solar energy to increase the temperature, and the pressurized gasification in the low-pressure gasification chamber 2 is intensified, the atomization effect is enhanced, and the gas production volume increases sharply, and the scale of the device is flexible and the investment is cheap. Convenient utilization of low-level thermal energy. In addition, the steam ejection condensing device 6 is used, the operation is simple, the steam recovery rate is high, and the cold sea water is used to condense the water vapor, so that the energy consumption is reduced, and the cost is very low. In view of this, in view of the above-mentioned problems, the utility model manufactures a low-temperature and high-efficiency atomization ejection seawater desalination device. The negative pressure distillation is realized by using the self-weight load of seawater, thereby greatly reducing energy consumption and making full use of low-grade heat sources. And combined with high-efficiency atomization technology, it can increase the seawater evaporation efficiency and increase the salt yield. Finally, the water vapor ejection device is cooled by the seawater cooling system, which is simple and convenient to operate, has a wide range of raw materials and has low energy consumption. On the whole, the device is simple in structure, small in investment, high in desalination production efficiency and salt extraction efficiency, and is suitable for use on islands lacking freshwater, residents in coastal areas and small and medium-sized fishing boats near the sea.

Therefore, in summary, the device uses the wind power device 110 to drive the atomizing pump 108 and the hydraulic pump 115, and the solar energy is used to heat and increase the gasification temperature, making good use of low-grade thermal energy, low energy consumption, improving energy efficiency, and utilizing renewable energy Resources reduce energy consumption. Moreover, using high-efficiency spray technology and liquid self-weight negative pressure technology, the device has low cost, high desalination and salt yield, and is very suitable for large-scale promotion.

Description of drawings

Fig. 1 is the structural representation of a kind of low-temperature high-efficiency atomization injection seawater desalination device provided by the embodiment of the present utility model;

FIG. 2 is a detailed structural diagram of a steam ejection condensing device in an embodiment of the present invention.

Reference number:

1: Solar heating device; 2: Low pressure gasification chamber; 3: Concentrated salt liquid pool; 4: Seawater raw material pool; 5: Fresh water collection tank; 6: Steam ejection condensing device;

S1: Seawater gasification heater; S2: Gas-liquid separation device; S3: Enhanced atomization heater;

B1: nozzle; B2: suction chamber; B3: condensation chamber; B4; working fluid; B5: ejected steam; B6: diffuser chamber;

101～102: Heating circuit; 103: Concentrated brine flowing through pipeline; 104: Concentrated brine discharge pipeline; 105: High-efficiency atomizing nozzle; 106: Atomizer water supply pipe; 107: Seawater input device; 108: Atomizing pump; 109 : water vapor ejection pipe; 110: wind power plant; 111: cooling circulation seawater inflow pipe; 112: cooling circulation seawater outflow pipe; 113: hydraulic transmission pipe; 114: fresh water flowing through pipe; 115: hydraulic pump: 116: fresh water outlet material pipeline.

Detailed ways

In order to make it easy to understand the technical means, creative features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the accompanying drawings and implementation cases.

As shown in FIG. 1 , an embodiment of the present invention provides a low-temperature and high-efficiency atomization injection seawater desalination device, including:

Using the low-pressure gasification chamber 2 generated by the negative pressure of liquid gravity, there is a height difference H1 between the low-pressure gasification chamber 2 and the concentrated salt solution pool 3, and there is a certain height difference H2 between the concentrated salt solution pool 3 and the seawater raw material pool 4, and it is ensured that H1> H2.

The concentrated brine produced in the low pressure gasification chamber 2 flows into the concentrated salt solution pool 3 through the concentrated brine flow through the pipeline 103 , and then the concentrated brine is discharged through the concentrated brine discharge pipeline 104 .

The solar heating device 1 heats the low-pressure gasification chamber 2 to control the temperature of the low-pressure gasification chamber 2 to 20-80°C. And the solar heating device 1 is connected to the low pressure gasification chamber 2 all the way to heat the low pressure gasification chamber 2, and connected to the water supply pipe 106 of the atomizer, to preheat the atomized seawater and strengthen the atomization effect. Seawater gasification heater S1 adopts hydrocyclone spherical heater.

The high-efficiency atomizing nozzle 105 connected to the top of the low-pressure gasification chamber 2, the seawater in the seawater raw material pool 4 is pumped by the atomizing pump 108 and passed through the atomizer water supply pipe 106, and the seawater is strengthened by the atomization heater through the atomizer water supply pipe 106 S3 is preheated, the temperature is raised, and spray treatment is performed by the high-efficiency atomizing nozzle 105, so that the pressurized gasification in the low-pressure gasification chamber is intensified, the atomization effect is enhanced, and the gas production volume increases sharply, which effectively improves the gasification rate of the gasification chamber. It is required to use a high-efficiency atomizing nozzle 105 with an inner diameter of 0.2-1.5 mm to spray the incoming seawater into the evaporation chamber at a flow rate of 200-300 m/s through the atomization pump 108, and the seawater is dispersed into droplets with a particle size of 30-100 μm.

The gas-liquid separation device S2 in the low-pressure gasification chamber 2 is connected to the steam ejection condensing device 6, so that part of the seawater after atomization becomes water vapor and is separated from other seawater droplets, so that the water vapor enters the ejection device for cooling, Prevent fresh water from being polluted.

As shown in FIG. 2 , the steam injection condensation device 6 includes a spray head B1, a suction chamber B2, a diffusion chamber B6 and a condensation chamber B3. The ejected vapor B5 enters the suction chamber B2 through the nozzle B1, and then enters the diffuser chamber B6 with the working fluid B4, and then is condensed by the cooling cycle seawater in the condensation chamber B3 into liquid through the fresh water flow through the pipeline 114 and flows into the fresh water collection tank 5.

One end of the condensation chamber B3 is communicated with the cooling circulating seawater inflow pipe 111 , and the other end is communicated with the cooling circulating seawater outflow pipe 112 . The cold seawater flows in from the cooling circulating seawater inflow pipe 111, and flows out from the cooling circulating seawater outflow pipe 112, which functions to condense water vapor. The water vapor flows into the diffuser chamber B6 through the ejector nozzle B1, and then is condensed into liquid by the cooling circulating seawater in the condensation chamber B3, and flows into the fresh water collection tank 5 through the fresh water flow through the pipeline. And the connection between the steam extraction condensing device 6 and the fresh water collection chamber 5 is controlled by the hydraulic pump 115 .

The fresh water in the fresh water collection tank 5 flows out through the fresh water outlet pipe 116 .

The atomizing pump 108 and the hydraulic pump 115 are connected to the wind power device 110, and the wind power device supplies and drives the wind power device.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and scope of the required equivalents are included in the utility model. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. The utility model provides a sea water desalination device is penetrated in high-efficient atomizing of low temperature, its characterized in that, the device utilizes low-efficient atomizing to penetrate condensation method and desalinates the sea water, and its device includes: a solar heating device (1); a low-pressure gasification chamber (2); a strong brine pool (3); a seawater raw material pool (4); a fresh water collecting tank (5); a steam condensation injection device (6); a high efficiency atomizer (105); a seawater vaporization heater (S1); a gas-liquid separation device (S2); intensifying the atomizing heater (S3); the process flow comprises the following steps: the heated seawater is atomized into steam in the low-pressure gasification chamber (2) through the high-efficiency atomization nozzle (105), and then is condensed and recovered through the steam injection condensing device (6).

2. The low-temperature high-efficiency atomization injection seawater desalination device according to claim 1, which is characterized in that: the process flow comprises the following steps: the heated seawater is sprayed out in a foggy manner through the high-efficiency atomizing nozzle (105), part of the heated seawater is changed into steam after the seawater is atomized, and other seawater droplets are separated through the gas-liquid separation device (S2), and then the steam is changed into fresh water for life through ejection and condensation.

3. The low-temperature high-efficiency atomization injection seawater desalination device according to claim 1, which is characterized in that: the seawater of the high-efficiency atomization device is controlled by an atomization pump (108), the steam injection condensing device (6) and the fresh water collecting box (5) are controlled by a hydraulic pump (115), and the atomization pump (108) and the hydraulic pump (115) are driven by a wind power device (110).

4. The low-temperature high-efficiency atomization injection seawater desalination device according to claim 1, which is characterized in that: utilize atomizing pump (108) to extract sea water and preheat with strengthening atomizing heater (S3) through atomizer delivery pipe (106), then in high-efficient atomizer (105) with the sea water vaporific spraying into low pressure vaporizer (2), pressurization gasification aggravation in low pressure vaporizer (2), the atomization effect reinforcing, the while gas production sharply increases, effectively improves low pressure vaporizer (2) gasification speed.

5. The low-temperature high-efficiency atomization injection seawater desalination device according to claim 1, which is characterized in that: the height difference H1 exists between the low-pressure gasification chamber (2) and the concentrated salt liquid pool (3), the height difference H2 exists between the concentrated salt liquid pool (3) and the seawater raw material pool (4), and H1 is greater than H2, and the low-pressure gasification chamber (2) is formed by utilizing the self-gravity negative pressure of seawater.

6. The low-temperature high-efficiency atomization injection seawater desalination device according to claim 1, which is characterized in that: the seawater in the low-pressure gasification chamber (2) is heated by the solar heating device (1), the temperature is controlled to be 20-80 ℃ by a seawater gasification heater (S1), the energy consumption is low, the low-temperature solar energy is not even heated, and the heat of the seawater at 20 ℃ is utilized for gasification.

7. The low-temperature high-efficiency atomization injection seawater desalination device according to claim 1, which is characterized in that: the seawater heater (S1) in the low-pressure gasification chamber (2) adopts a liquid-rotating spherical heater, so that the scale formation of the heat exchanger can be effectively reduced, and the liquid-rotating spherical heater has the characteristics of large heat transfer area, good effect and simple structure.

8. The low-temperature high-efficiency atomization injection seawater desalination device according to claim 1, which is characterized in that: after the seawater is atomized, part of the seawater is changed into steam, and the other part is seawater droplets, and the gas-liquid separation device (S2) separates the seawater droplets to prevent the fresh water from being polluted.

9. The low-temperature high-efficiency atomization injection seawater desalination device according to claim 1, which is characterized in that: the steam injection condensing device (6) comprises a spray head (B1), a suction chamber (B2), a diffusion chamber (B6) and a condensing chamber (B3).

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