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CN103693700B - A kind of sea water desalinating plant - Google Patents

A kind of sea water desalinating plant Download PDF

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CN103693700B
CN103693700B CN201310723554.XA CN201310723554A CN103693700B CN 103693700 B CN103693700 B CN 103693700B CN 201310723554 A CN201310723554 A CN 201310723554A CN 103693700 B CN103693700 B CN 103693700B
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nozzle
flow deflector
condensation
condensation flow
water storage
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CN103693700A (en
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龚蕊
张大鹏
王朝晖
周成冈
吴金平
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China University of Geosciences
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China University of Geosciences
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination

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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

本发明提供了一种海水淡化装置,至少包括蓄水箱、超声雾化器、气液混合单元、蒸发冷凝单元,以及将上述部件之间互相连通的管道,其中蓄水箱中存储有海水,超声雾化器通过管道连接蓄水箱;气液混合单元由空气压缩机、进气管道以及喷嘴组成;所述的蒸发冷凝单元至少包括蒸发器、微波加热装置、格栅过滤装置、冷凝导流板以及出水管,所述的蒸发器的内部为中空的蒸发腔,微波加热装置安装在蒸发腔的内壁上,格栅过滤装置覆盖在蒸发腔的顶部,冷凝导流板安装在格栅过滤装置的上方,冷凝导流板上设有导流槽。该装置喷出液滴小、雾化液滴均匀性好、蒸发速度快,微波加热法蒸发水的能量利用率高,能够调节雾化颗粒大小,能量利用率提高。

The invention provides a seawater desalination device, which at least includes a water storage tank, an ultrasonic atomizer, a gas-liquid mixing unit, an evaporation and condensation unit, and a pipeline connecting the above-mentioned components, wherein seawater is stored in the water storage tank, The ultrasonic atomizer is connected to the water storage tank through pipelines; the gas-liquid mixing unit is composed of an air compressor, an air intake pipe and a nozzle; The inside of the evaporator is a hollow evaporation chamber, the microwave heating device is installed on the inner wall of the evaporation chamber, the grille filter device is covered on the top of the evaporation chamber, and the condensation deflector is installed on the grille filter device Above the condensation deflector is provided with a deflector groove. The device has small sprayed liquid droplets, good uniformity of atomized liquid droplets, and fast evaporation speed. The microwave heating method has high energy utilization rate for evaporating water, can adjust the size of atomized particles, and improves energy utilization rate.

Description

一种海水淡化装置A seawater desalination device

技术领域technical field

本发明提供了一种海水淡化装置,尤其涉及一种气液混合的低能耗的高效的海水淡化装置,属于海水淡化装置技术领域。The invention provides a seawater desalination device, in particular to a gas-liquid mixed low energy consumption and high-efficiency seawater desalination device, which belongs to the technical field of seawater desalination devices.

背景技术Background technique

随着经济社会的高速发展和环境资源的日益破坏,水资源危机已成为仅次于全球气候变暖的世界第二大环境问题。地球有大约70%的面积是海洋,因此海水淡化是解决水资源危机、开拓新的安全水源的必然选择。目前国内外海水淡化技术种类繁多,多级闪蒸技术虽技术成熟但动力消耗大;低温多效蒸馏技术结构较为复杂,成本较高;反渗透海水淡化技术发展较快,工程造价和运行成本也在持续降低,但对海水水质的适应范围、系统稳定性尚有进一步提高的空间。With the rapid development of economy and society and the increasing destruction of environmental resources, the crisis of water resources has become the second largest environmental problem in the world after global warming. About 70% of the earth is covered by oceans, so seawater desalination is an inevitable choice to solve the water crisis and develop new safe water sources. At present, there are many types of seawater desalination technologies at home and abroad. Although the multi-stage flash technology is mature, it consumes a lot of power; the low-temperature multi-effect distillation technology has a complex structure and high cost; It is continuously decreasing, but there is still room for further improvement in the scope of adaptation to seawater quality and system stability.

传统的海水淡化中使用的多效蒸馏技术和压力蒸馏技术会消耗大量的能源,所需仪器较大;反渗透法对海水预处理要求严格,膜需要定期更换;压力水泵射流雾化喷嘴雾化粒度较粗,蒸发冷凝能量利用率不高。The multi-effect distillation technology and pressure distillation technology used in traditional seawater desalination consume a lot of energy and require large instruments; the reverse osmosis method has strict requirements on seawater pretreatment, and the membrane needs to be replaced regularly; the pressure water pump jet atomization nozzle atomizes The particle size is relatively coarse, and the utilization rate of evaporation and condensation energy is not high.

中国专利CN201882940U公开了一种包括盛装部、导热盖、自动开关和导管的海水淡化装置,该装置用导引管导入海水,利用物理蒸发的方法将海水淡化以获得海水。但该装置导热罩设置在盛装部上并不能有效提供整个装置所需的能量。中国专利CN201195697Y公开了一种新型微型海水淡化装置,包括手动增压泵、有机过滤泵、高压舱以及外壳,该装置体积小携带方便但需要采用手动加压的方式;中国专利CN2685321Y公开了一种手动海水淡化装置,包括粗滤器、反渗透预处理组件、手动高压泵、稳压阀和反渗透膜组件,该装置由单独的两部分组成,分别是海水预处理部分和反渗透处理部分,因此这种海水淡化装置的体积大、携带不方便。Chinese patent CN201882940U discloses a seawater desalination device including a container, a heat conduction cover, an automatic switch and a conduit. The device uses a guide tube to introduce seawater, and uses physical evaporation to desalinate the seawater to obtain seawater. But the device heat conduction cover is arranged on the containing part and can not effectively provide the required energy of the whole device. Chinese patent CN201195697Y discloses a new type of miniature seawater desalination device, including a manual booster pump, an organic filter pump, a hyperbaric chamber and a casing. The device is small in size and easy to carry but needs to be manually pressurized; Manual seawater desalination device, including coarse filter, reverse osmosis pretreatment component, manual high-pressure pump, pressure regulator valve and reverse osmosis membrane component, the device is composed of two separate parts, namely seawater pretreatment part and reverse osmosis treatment part, so This seawater desalination device has a large volume and is inconvenient to carry.

对比中国专利CN2687107Y公开了一种气液混合高速蒸发海水淡化装置,由透明汽化大棚、飓风罩、鼓风机、压力喷射装置和扩散器等组成,该装置成本较低、性能稳定,但在混合室内不能保证经过高压高速使海水雾滴和空气混合后能够被充分蒸发汽化;另一方面该装置能量利用率降低。Compared with Chinese patent CN2687107Y, a gas-liquid mixing high-speed evaporation seawater desalination device is disclosed, which is composed of a transparent vaporization greenhouse, a hurricane cover, a blower, a pressure injection device and a diffuser. The device has low cost and stable performance, but cannot be used in the mixing chamber. It is ensured that seawater droplets and air can be fully evaporated and vaporized after being mixed with high pressure and high speed; on the other hand, the energy utilization rate of the device is reduced.

因此目前仍迫切需要开发低能耗、使用方便的海水淡化装置。Therefore, there is still an urgent need to develop low-energy, easy-to-use seawater desalination devices.

发明内容Contents of the invention

本发明提供了一种海水淡化装置,解决了背景技术中的不足,该装置喷出液滴小、雾化液滴均匀性好、蒸发速度快,微波加热法蒸发水的能量利用率高,能够调节雾化颗粒大小,能量利用率提高。The invention provides a seawater desalination device, which solves the deficiencies in the background technology. The device sprays small droplets, has good uniformity of atomized droplets, and has a fast evaporation speed. The microwave heating method has a high energy utilization rate for evaporating water, and can The size of atomized particles is adjusted, and the energy utilization rate is improved.

实现本发明上述目的所采用的技术方案为:The technical scheme adopted to realize the above-mentioned purpose of the present invention is:

一种海水淡化装置,至少包括蓄水箱、超声雾化器、气液混合单元、蒸发冷凝单元,以及将上述部件之间互相连通的管道,其中蓄水箱中存储有海水,超声雾化器通过管道连接蓄水箱,并将蓄水箱中的海水雾化为小液滴;气液混合单元由空气压缩机、进气管道以及喷嘴组成,所述的进气管道与喷嘴连接,空气压缩机安装于进气管道上,超声雾化器与喷嘴连接,空气压缩器所压缩的空气与超声雾化器雾化的小液滴在喷嘴内混合后由喷嘴内喷出;所述的蒸发冷凝单元至少包括蒸发器、微波加热装置、格栅过滤装置、冷凝导流板以及出水管,所述的蒸发器的内部为中空的蒸发腔,喷嘴位于蒸发腔内,微波加热装置安装在蒸发腔的内壁上,格栅过滤装置中设有用于过滤雾滴的滤网,格栅过滤装置覆盖在蒸发腔的顶部,冷凝导流板安装在格栅过滤装置的上方,冷凝导流板上设有导流槽,导流槽连通出水管,在蒸发腔中被蒸发的水蒸气穿过滤网后在冷凝导流板上凝结为液滴并沿着导流槽由出水管流出并收集。A seawater desalination device at least includes a water storage tank, an ultrasonic atomizer, a gas-liquid mixing unit, an evaporation and condensation unit, and a pipeline connecting the above-mentioned components, wherein seawater is stored in the water storage tank, and the ultrasonic atomizer The water storage tank is connected through a pipeline, and the seawater in the water storage tank is atomized into small droplets; the gas-liquid mixing unit is composed of an air compressor, an air inlet pipe and a nozzle, the air inlet pipe is connected to the nozzle, and the air is compressed The machine is installed on the intake pipe, the ultrasonic atomizer is connected with the nozzle, the air compressed by the air compressor and the small droplets atomized by the ultrasonic atomizer are mixed in the nozzle and sprayed out from the nozzle; the evaporation condensation The unit at least includes an evaporator, a microwave heating device, a grid filter device, a condensation deflector, and a water outlet pipe. The inside of the evaporator is a hollow evaporation chamber, the nozzle is located in the evaporation chamber, and the microwave heating device is installed in the evaporation chamber. On the inner wall, the grid filter device is provided with a filter screen for filtering mist droplets. The grid filter device covers the top of the evaporation chamber, and the condensation deflector is installed above the grid filter device. The flow groove and the flow diversion groove are connected to the water outlet pipe. The evaporated water vapor in the evaporation chamber passes through the filter screen and condenses into droplets on the condensation deflector, and flows out and collects along the flow diversion groove from the water outlet pipe.

所述的冷凝导流板的上方设有一层隔板,隔板与冷凝导流板之间的侧边密封,两者之间共同形成一左右通透的通风道,通风道的一端通向外界空气,通风道的另一端与进气管道连通。A layer of partition is arranged above the condensation deflector, and the side between the partition and the condensation deflector is sealed, and a left and right transparent air passage is formed between the two, and one end of the air passage leads to the outside world Air, the other end of the ventilation channel communicates with the intake pipe.

所述的冷凝导流板的横截面呈弧形,纵截面呈波纹状,冷凝导流板上所设有的导流槽位于波纹的底部,且沿着横截面方向分布,导流槽的底端均与出水管连通。所述的冷凝导流板的材质为铝合金。The cross section of the condensation deflector is arc-shaped, and the longitudinal section is corrugated. The diversion groove provided on the condensation deflector is located at the bottom of the corrugation and distributed along the direction of the cross section. The bottom of the diversion groove Both ends are connected with the outlet pipe. The material of the condensation deflector is aluminum alloy.

所述的蒸发器的底部设有浓缩盐水池以及浓缩盐水出液阀门。The bottom of the evaporator is provided with a concentrated brine tank and a concentrated brine outlet valve.

所述的蒸发器的侧壁上设有泄压排气窗。The side wall of the evaporator is provided with a pressure relief and exhaust window.

本发明中所提供的海水淡化装置与现有技术相比有以下优点:在本发明中由于采用了超声雾化器,在经过预处理的冷海水的出口处用超声波喷雾装置,将水雾化成超微粒子,和进气管道喷射出的空气气流混合均匀后形成汽液混合物,能够调节雾化颗粒的大小从而改变蒸发比表面积与蒸发速率;采用微波加热技术分离汽体与浓缩盐水小液滴,提高了蒸发过程中的热利用效率;在蒸发器顶部安装的冷凝导流板,由于冷凝导流板的上方为与进气管道连接的通风道,因此在使用时,水蒸气冷凝时的热量既可以通过冷凝导流板传输给空气,从而升高压缩空气的温度,减少蒸发时所需要的热量;另一方面,由于通风道中不断进入的冷空气,冷空气能够降低冷凝导流板的温度,从而使水蒸气获得更好的冷凝。Compared with the prior art, the seawater desalination device provided in the present invention has the following advantages: in the present invention, due to the adoption of an ultrasonic atomizer, the water is atomized into Ultrafine particles, mixed evenly with the air flow ejected from the intake pipe, form a vapor-liquid mixture, which can adjust the size of the atomized particles to change the evaporation specific surface area and evaporation rate; microwave heating technology is used to separate the gas from the concentrated brine droplets, The heat utilization efficiency in the evaporation process is improved; the condensation deflector installed on the top of the evaporator, because the air duct connected to the intake pipe is above the condensation deflector, the heat generated when the water vapor condenses is both It can be transmitted to the air through the condensation deflector, thereby increasing the temperature of the compressed air and reducing the heat required for evaporation; on the other hand, due to the continuous entry of cold air in the ventilation duct, the cold air can reduce the temperature of the condensation deflector, This results in better condensation of water vapor.

附图说明Description of drawings

图1为本发明所提供的海水淡化装置的整体结构示意图;Fig. 1 is the overall structure schematic diagram of the seawater desalination device provided by the present invention;

图2为本发明所提供的海水淡化装置的工作流程图;Fig. 2 is the working flow chart of seawater desalination device provided by the present invention;

图3为冷凝导流板的结构示意图。Fig. 3 is a structural schematic diagram of a condensation deflector.

图中:1-蓄水箱,2-超声雾化器,3-空气压缩机,4-进气管道,5-喷嘴,6-蒸发腔,7-微波加热装置,8-格栅过滤装置,9-冷凝导流板,10-出水管,11-导流槽,12-隔板,13-通风道,14-浓缩盐水池,15-泄压排气窗。In the figure: 1-water storage tank, 2-ultrasonic atomizer, 3-air compressor, 4-intake pipe, 5-nozzle, 6-evaporation chamber, 7-microwave heating device, 8-grid filter device, 9-condensation deflector, 10-outlet pipe, 11-guidance groove, 12-partition, 13-ventilation channel, 14-concentrated brine pool, 15-pressure relief exhaust window.

具体实施方式Detailed ways

下面结合附图对本发明做详细具体的说明。The present invention will be described in detail below in conjunction with the accompanying drawings.

本发明所提供的海水淡化装置的整体结构如图1所示,包括蓄水箱1、超声雾化器2、气液混合单元、蒸发冷凝单元,以及将上述部件之间互相连通的管道,其中蓄水箱1中存储有海水,超声雾化器2通过管道连接蓄水箱1,并将蓄水箱中的海水雾化为小液滴,由于超声波具有破坏液面惯性与表面张力而产生空化作用的缘故,当液体表面张力波足够时,就会在波峰飞出气雾;雾化颗粒直径大小的不同导致蒸发速度的不同,高强度的超声波的频率一般为10—40KHz,因此控制超声波喷雾装置的频率使得喷出的雾化颗粒能够被充分汽化分离。The overall structure of the seawater desalination device provided by the present invention is shown in Figure 1, including a water storage tank 1, an ultrasonic atomizer 2, a gas-liquid mixing unit, an evaporation and condensation unit, and pipes connecting the above-mentioned components to each other, wherein Seawater is stored in the water storage tank 1, and the ultrasonic atomizer 2 is connected to the water storage tank 1 through a pipeline, and the seawater in the water storage tank is atomized into small droplets. Due to the chemical effect, when the surface tension wave of the liquid is sufficient, the aerosol will fly out at the wave peak; the difference in the diameter of the atomized particles leads to the difference in the evaporation rate, and the frequency of high-intensity ultrasonic waves is generally 10-40KHz, so the control of ultrasonic spray The frequency of the device enables the sprayed atomized particles to be fully vaporized and separated.

气液混合单元由空气压缩机3、进气管道4以及喷嘴5组成,所述的进气管道4与喷嘴5连接,空气压缩机3安装于进气管道4上,超声雾化器2与喷嘴5连接,空气压缩器3所压缩的空气与超声雾化器2雾化的小液滴在喷嘴5内做圆周运动,充分混合均匀后从出口端处向空中喷射而出。The gas-liquid mixing unit is composed of an air compressor 3, an air inlet pipe 4 and a nozzle 5, the air inlet pipe 4 is connected to the nozzle 5, the air compressor 3 is installed on the air inlet pipe 4, the ultrasonic atomizer 2 and the nozzle 5 connection, the air compressed by the air compressor 3 and the small liquid droplets atomized by the ultrasonic atomizer 2 make a circular motion in the nozzle 5, mix well and spray out into the air from the outlet end.

所述的蒸发冷凝单元至少包括蒸发器、微波加热装置7、格栅过滤装置8、冷凝导流板9以及出水管10,所述的蒸发器的内部为中空的蒸发腔6,喷嘴5位于蒸发腔6内,微波加热装置7安装在蒸发腔6的内壁上,能够提供进入蒸发腔6内的汽液混合物连续不断地被雾化汽化时所吸收的热量——汽化热,通过设定微波加热装置的功率以及面积大小,能够使一定量的汽液混合物可以被充分汽化分离。蒸发腔的容积,应根据单位时间内进入蒸发腔的液滴量与液滴大小而设定,以满足一定量的汽液混合物可以被充分汽化分离。可以通过调整小液滴与喷入的压缩空气的比例以及进入蒸发腔的流速来控制单位时间内进入蒸发腔的液滴量。The evaporation and condensation unit at least includes an evaporator, a microwave heating device 7, a grid filter device 8, a condensation deflector 9, and a water outlet pipe 10. The inside of the evaporator is a hollow evaporation chamber 6, and the nozzle 5 is located in the evaporation chamber. In the cavity 6, the microwave heating device 7 is installed on the inner wall of the evaporation cavity 6, which can provide the heat absorbed when the vapor-liquid mixture entering the evaporation cavity 6 is continuously atomized and vaporized—the heat of vaporization. By setting the microwave heating The power and size of the device can enable a certain amount of vapor-liquid mixture to be fully vaporized and separated. The volume of the evaporation chamber should be set according to the amount and size of droplets entering the evaporation chamber per unit time, so that a certain amount of vapor-liquid mixture can be fully vaporized and separated. The amount of liquid droplets entering the evaporation chamber per unit time can be controlled by adjusting the ratio of small liquid droplets to the injected compressed air and the flow rate entering the evaporation chamber.

格栅过滤装置8中设有用于过滤雾滴的滤网,格栅过滤装置8覆盖在蒸发腔6的顶部,以避免上升的海水水雾腐蚀铝制冷凝导流板,所设置的滤网可以使上升的汽液中被雾化的微小气体颗粒通过滤网,水相则被拦截下来继续被汽化。The grille filter 8 is provided with a filter screen for filtering mist droplets. The grille filter 8 covers the top of the evaporation chamber 6 to prevent the rising sea water mist from corroding the aluminum condensation deflector. The set filter screen can The atomized tiny gas particles in the rising vapor-liquid pass through the filter, and the water phase is intercepted and continues to be vaporized.

冷凝导流板9安装在格栅过滤装置的上方,其结构如图3所示,冷凝导流板9上设有导流槽11,导流槽11连通出水管10,在蒸发腔中被蒸发的水蒸气穿过滤网后在冷凝导流板9上凝结为液滴并沿着导流槽由出水管流出并收集。Condensation deflector 9 is installed above the grid filter device, and its structure is shown in Figure 3. Condensation deflector 9 is provided with diversion groove 11, and diversion groove 11 is connected to outlet pipe 10, and is evaporated in the evaporation chamber. After the water vapor passes through the filter screen, it condenses into droplets on the condensation guide plate 9 and flows out and collects along the guide groove by the water outlet pipe.

所述的冷凝导流板9的上方设有一层隔板12,隔板12为聚四氟乙烯材质片。隔板12与冷凝导流板9之间的侧边密封,两者之间共同形成一左右通透的通风道13,通风道13的一端通向外界空气,通风道13的另一端与进气管道4连通。A layer of partition 12 is arranged above the condensation deflector 9, and the partition 12 is a polytetrafluoroethylene sheet. The side between the partition plate 12 and the condensation deflector 9 is sealed, and a left and right air passage 13 is formed between the two. One end of the air passage 13 leads to the outside air, and the other end of the air passage 13 is connected to the air intake. Pipeline 4 communicates.

所述的冷凝导流板9的横截面呈弧形,纵截面呈波纹状,冷凝导流板9上所设有的导流槽11位于波纹的底部,且沿着横截面方向分布,导流槽11的底端均与出水管10连通。所述的冷凝导流板9的材质为铝合金,铝的导热性很好,加热或冷却时不会由于温差产生的内应力而导致容器变形。The cross-section of the condensation deflector 9 is arc-shaped, and the longitudinal section is corrugated. The flow guide groove 11 provided on the condensation deflector 9 is located at the bottom of the corrugation, and is distributed along the direction of the cross section. The bottom ends of the grooves 11 are all communicated with the outlet pipes 10 . The material of the condensation deflector 9 is aluminum alloy, which has good thermal conductivity, and the container will not be deformed due to internal stress generated by temperature difference during heating or cooling.

在本实施例中,所述的蒸发器的底部设有浓缩盐水池14以及浓缩盐水出液阀门,用于收集盐水。蒸发器的侧壁上设有泄压排气窗15,可根据蒸发腔内的气压压差变化自动开启泄压排气及自动关闭停止泄压排气。In this embodiment, the bottom of the evaporator is provided with a concentrated brine tank 14 and a concentrated brine outlet valve for collecting brine. The side wall of the evaporator is provided with a pressure relief and exhaust window 15, which can automatically open the pressure relief and exhaust and automatically close and stop the pressure relief and exhaust according to the change of the air pressure difference in the evaporation chamber.

本发明所提供的海水淡化装置的工作流程如下:首先开启蓄水箱的出水阀门流出经过预处理后的冷海水,通过超声雾化器产生大量雾化小液滴,超声雾化器的出口垂直于进气管道并密封连接,在连接处产生负压便于雾化小液滴与进气管道喷射出的压缩空气混合。混合后进入喷嘴的管道内喷嘴喷出送入蒸发器内。喷射扩散至蒸发器中的微细悬浮汽液混合物,吸收周围大量的微波辐射热量,膨胀后形成雾云被快速蒸发汽化。此时,蒸发器体内的大量的多余的气体聚集之后,由于气压的不断变化,多余的气体不断地从泄压排气窗被快速输送出去。快速流动的水汽流携带着大量的悬浮小雾滴同时运行上升,所设置的滤网可以保证上升的汽液中被雾化的微小气体颗粒可以通过滤网,水相则被拦截下来继续被汽化。其中部分微细颗粒被蒸发汽化上升以后,部分上升水气流接触到上部冷凝导流板,遇冷凝聚成液滴,由于冷凝导流板的弧度设计,液滴汇聚成股流下,从排水管道不断地排出。在蒸发器顶部安装的冷凝导流板,由于冷凝导流板的上方为与进气管道连接的通风道,因此在使用时,水蒸气冷凝时的热量既可以通过冷凝导流板传输给空气,从而升高压缩空气的温度,减少蒸发时所需要的热量;另一方面,由于通风道中不断进入的冷空气,冷空气能够降低冷凝导流板的温度,从而使水蒸气获得更好的冷凝。整个装置达到低能耗汽液混合高速蒸发海水淡化的目的。The working process of the seawater desalination device provided by the present invention is as follows: first, the water outlet valve of the water storage tank is opened to flow out the pretreated cold seawater, and a large number of atomized small droplets are generated through the ultrasonic atomizer, and the outlet of the ultrasonic atomizer is vertical It is connected to the air intake pipe and sealed, and negative pressure is generated at the connection to facilitate the mixing of atomized droplets with the compressed air ejected from the air intake pipe. After mixing, it enters the pipeline of the nozzle, sprays out the nozzle and sends it into the evaporator. The fine suspended vapor-liquid mixture sprayed and diffused into the evaporator absorbs a large amount of microwave radiation heat around it, expands and forms a fog cloud that is quickly evaporated and vaporized. At this time, after a large amount of excess gas accumulates in the evaporator body, due to the continuous change of the air pressure, the excess gas is continuously and rapidly transported out from the pressure relief and exhaust window. The fast-flowing water vapor stream carries a large number of suspended small mist droplets and runs upward at the same time. The filter screen can ensure that the atomized tiny gas particles in the rising vapor-liquid can pass through the filter screen, and the water phase is intercepted and continues to be vaporized. . After part of the fine particles are vaporized and risen, part of the rising water flow touches the upper condensation deflector, and condenses into droplets. Due to the arc design of the condensation deflector, the droplets converge into streams and flow down continuously from the drain pipe. discharge. The condensation deflector installed on the top of the evaporator, because the top of the condensation deflector is a ventilation channel connected with the intake pipe, so when in use, the heat of water vapor condensation can be transmitted to the air through the condensation deflector, Thereby increasing the temperature of the compressed air and reducing the heat required for evaporation; on the other hand, due to the continuous entry of cold air in the ventilation channel, the cold air can reduce the temperature of the condensation deflector, so that the water vapor can be better condensed. The whole device achieves the purpose of desalination of seawater by mixing gas and liquid with low energy consumption and evaporating at high speed.

Claims (5)

1. a sea water desalinating plant, it is characterized in that: at least comprise water storage box, ultrasonic atomizer, gas-liquid mixed unit, evaporative condenser unit, and the pipeline will interconnected between above-mentioned parts, wherein store seawater in water storage box, ultrasonic atomizer connects water storage box by pipeline, and is small droplets by the seawater atomization in water storage box, gas-liquid mixed unit is made up of air compressor, intake ducting and nozzle, described intake ducting is connected with nozzle, air compressor is installed on intake ducting, ultrasonic atomizer is connected with nozzle, sprays after the small droplets that the air that air compressor compresses and ultrasonic atomizer are atomized mixes in nozzle by nozzle, described evaporative condenser unit at least comprises vaporizer, microwave heating installation, grid filtration device, condensation flow deflector and rising pipe, the inside of described vaporizer is the evaporation cavity of hollow, nozzle is positioned at evaporation cavity, microwave heating installation is arranged on the inwall of evaporation cavity, the filter screen for filtering droplet is provided with in grid filtration device, grid filtration device covers the top of evaporation cavity, condensation flow deflector is arranged on the top of grid filtration device, condensation flow deflector is provided with diversion trench, diversion trench is communicated with rising pipe, in evaporation cavity by the water vapour that evaporates through being condensed into drop after filter screen on condensation flow deflector and being flowed out by rising pipe along diversion trench and collect, the cross section of described condensation flow deflector is curved, vertical section is corrugated, the diversion trench that condensation flow deflector is provided with is positioned at the bottom of ripple, and distribute along cross-sectional direction, the bottom of diversion trench is all communicated with rising pipe.
2. sea water desalinating plant according to claim 1, it is characterized in that: the top of described condensation flow deflector is provided with one deck dividing plate, side seals between dividing plate and condensation flow deflector, jointly form about one penetrating ventilation duct between the two, outside air is led in one end of ventilation duct, and the other end of ventilation duct is communicated with intake ducting.
3. sea water desalinating plant according to claim 1, is characterized in that: the material of described condensation flow deflector is aluminium alloy.
4. sea water desalinating plant according to claim 1, is characterized in that: the bottom of described vaporizer is provided with concentrated brine tank and concentrated salt solution fluid valve.
5. sea water desalinating plant according to claim 1, is characterized in that: the sidewall of described vaporizer is provided with pressure release exhausting window.
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