Ultrasonic atomization and vaporization seawater desalination desalting device and method

Abstract

The invention discloses an ultrasonic atomization and vaporization seawater desalination desalting device comprising a pretreating device, an ultrasonic resonance atomizer, a vaporization furnace, a heat-change condenser and a desalination water tank, wherein the heat-change condenser comprises a cooling medium water tank and a condensing disk intestinal pipe, the condensing disk intestinal pipe is arranged in the cooling medium water tank, a water outlet of the condensing disk intestinal pipe is connected with the desalination water tank, a water outlet of the pretreating device is connected with a water inlet of the cooling medium water tank, a water outlet of the cooling medium water tank is connected with the ultrasonic resonance atomizer, the ultrasonic resonance atomizer is connected with a vaporization furnace body of the vaporization furnace by a spraying pipe, and the vaporization furnace body is connected with the water inlet of the condensing disk intestinal pipe by a vapor transporting pipeline. The ultrasonic atomization and vaporization seawater desalination desalting device can effectively and environmentally extract fresh water from seawater in low energy consumption. The invention also discloses an ultrasonic atomization and vaporization seawater desalination desalting method.

Description

technical field [0001] The invention relates to a seawater desalination treatment technology, in particular to an ultrasonic atomization vaporization seawater desalination and desalination device. The invention also relates to a method for desalination and desalination of seawater by ultrasonic atomization and vaporization. Background technique [0002] The scarcity of water resources is increasingly affecting the global economic development and ecological environment. The shortage of water resources in China has seriously affected the social and economic development of coastal and western regions. With the continuous development and progress of society, as well as the improvement of people's living standards and quality, the shortage of water resources has been exacerbated. Experience at home and abroad proves that seawater desalination is an important way to solve the problem of water shortage in coastal areas. [0003] Two-thirds of the earth's surface is covered by wat...

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Problems solved by technology

[0004] However, the process of seawater desalination by reverse osmosis membrane method is complicated, its pretreatment and other auxiliary equipment are cumbersome, the raw water quality of the influent water is strict, and the operating pressure requires a high-pressure driving pressure of 5-7 MPa. High requirements for corrosion resistance

In addition, the use and maintenance of the permeable membrane is difficult, and a large amount of fungicides, scale inhibitors and other chemicals are required to be added during operation, and a large amount of acid, alkali and other chemical raw materials are used for membrane cleaning, and secondary sewage is generated.

[0005] Another important disadvantage of the reverse osmosis membrane method is that it is difficult to remove boron when the content of "boron" (B) in seawater is high. According to the standard limit value of drinking water (boron ≤ 0.5mg / L), reverse osmosis membranes are easily oxidized, decomposed and blocked by chlorine, microorganisms, salts and other substances in seawater, resulting in reduced precision, scaling and scrapping, and short service life

Moreover, the desalination of seawater by the reverse osmosis membrane method is not thorough enough, resulting in a large amount of concentrated seawater returning to the sea, which increases the salinity concentration and salt content of the seawater in the sea area around the water intake, and the high salt concentration will seriously affect and destroy the marine ecology and marine economic environment. Long-term operation will turn the regional seawater into a "dead sea" with high salinity

[0006] In addition, the reverse osmosis device also needs to consume a large amount of materials such as corrosion-resistant stainless steel pipes, plates and titanium metal pipes, which is expensive

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