Low-energy consumption pressure spray desalination device and method thereof

Abstract

The present invention relates to a low-energy consumption pressure spray desalination device and a method thereof, and belongs to the field of sea-water desalination. The device part mainly comprises an air compressor set, a high pressure air tank, a high pressure hot seawater tank, a desalination and separation chamber, a hot air recoverer, a seawater heat exchanger tank and a freshwater tank. The spray desalination method mainly comprises the following steps: pressing seawater in sprinklers by high pressure, carrying out salt and water separation in the desalination and separation chamber in the high pressure spray manner. According to the present invention, the heat energy recycling and utilizing is realized; the high pressure gas phase power is adopted to transfer the spray, two heat exchanger method of convection and radiation are adopted, and the condensing waste heat is adopted for seawater heat energy recycling, such that the moving parts contacting with the seawater are reduced to the minimum, the system is simple, the operation is safe and stable so as to achieve purposes of low-temperature vaporization, low energy consumption, low investment, high yield, high efficiency and long service life.

Description

technical field [0001] The invention relates to a low energy consumption pressure spray desalination device and method, belonging to the field of seawater desalination. Background technique [0002] In order to solve the water source problem that human beings depend on, seawater desalination is the fundamental method in the future. Low consumption, low carbon, low cost, high quality, high yield, high efficiency, environmental friendliness and pollution-free are the ultimate goals of seawater desalination. [0003] At present, there are more than a dozen seawater desalination technologies, of which three are mature and commonly used: reverse osmosis filtration (membrane) method, flash evaporation and low-temperature multi-effect distillation (thermal) method. Regardless of the membrane method or the thermal method, energy consumption is the key issue. The level of energy consumption determines the level of production costs. The main energy consumption of the membrane method i...

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Problems solved by technology

Regardless of the membrane method or the thermal method, energy consumption is the key issue. The level of energy consumption determines the level of production costs. The main energy consumption of the membrane method is electric energy. High-pressure pumping water is the main energy-consuming process of the membrane method, while the main energy consumption of the thermal method is It is heat energy. The disadvantage of using the above method for seawater desalination is that the recovery rate is low, generally lower than 50%, and the brine discharged causes environmental pollution and consumes a large amount of high-grade energy.

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