Distillation method and device for seawater desalination at atmospheric pressure

Abstract

The invention discloses a distillation method and device for seawater desalination at atmospheric pressure. The distillation device comprises an atmospheric pressure distillation module, wherein the atmospheric pressure distillation module comprises an atmospheric pressure box structure, a plurality of hollow water collection plate assemblies and a plurality of liquid-absorbing core board assemblies, wherein the hollow water collection plate assemblies and the liquid-absorbing core board assemblies are arranged in an inner cavity of the atmospheric pressure box structure in an interphase manner, and one liquid-absorbing core board assembly is arranged between two adjacent hollow water collection plate assemblies; catch basin assemblies for collecting condensed distilled water are arranged at the lower ends of the outer walls of the hollow water collection plate assemblies; the flow direction of a fluid in each hollow water collection plate assembly is opposite to that in each liquid-absorbing core board assembly; the temperature of the fluid which flows through the inner cavity of a hollow core board of each hollow water collection plate assembly is lower than that which flows through two sides of the panel of a liquid-absorbing core board of each liquid-absorbing core board assembly; and the operating temperature of the fluid which flows through two sides of the panel of each liquid-absorbing core board is 55-98 DEG C. Therefore, the water production performance and the efficiency of a system can be effectively improved, and the operation cost of the system is reduced.

Description

technical field [0001] The invention relates to a distillation method and device for desalinating seawater under normal pressure, belonging to the field of water treatment. The method and device are also applicable to the desalination treatment of groundwater, other surface water, waste water and the like. Background technique [0002] Fresh water is one of the indispensable resources of human society, and plays an irreplaceable role in supporting life, life, and industrial and agricultural production. Therefore, water is the source of life and the basis of all production activities. [0003] 70.8% of the earth's area is covered by the ocean, the average depth of the ocean is 3800m, and the total water volume is nearly 1.4 billion cubic kilometers, but it is difficult to be directly quoted and used because of the high salinity. The fresh water on the earth is about 3% of the total water, and the distribution is extremely uneven. 3 / 4 of it is frozen in the glaciers in the n...

AI Technical Summary

Problems solved by technology

These methods have many shortcomings or defects, or need to consume a lot of energy, or the water production rate is not high, or occupy a large area, or are significantly affected by climate and weather changes

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