Low-temperature high-efficiency atomization ejection seawater desalination device and method thereof

Abstract

The invention relates to a low-temperature high-efficiency atomization ejection seawater desalination device and a method thereof, and is suitable for the field of seawater desalination. The device comprises a low-pressure evaporation chamber, a solar heating device, a high-efficiency atomization device, a gas-liquid separation device, and a steam injection condensation device. The method comprises the following process flow: heated seawater is sprayed out in a mist shape through the high-efficiency atomization device, after the seawater is atomized, part of the seawater becomes water vapor and the other is seawater droplets, the seawater droplets are separated by the gas-liquid separation device, and then the water vapor is subjected to injection condensation to be turned into fresh waterfor daily use. The device provided by the invention makes full use of low-grade heat energy, has low energy consumption, reduces pollution by utilizing renewable energy, has low production costs, a high yield of the fresh water and a high salt yield, is suitable for large-scale promotion, and extremely facilitates daily life of residents in coastal areas and use by small and medium-sized fishingboats.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a device and method for desalination of seawater by low-temperature high-efficiency atomization injection. Background technique [0002] my country's fresh water resources are scarce, accounting for only 1 / 30 of the world's average level, and nearly 70% of the country's urban water supply cannot be effectively guaranteed. In recent years, with the scarcity and pollution of water resources, the scarcity of fresh water in coastal areas such as Zhejiang, Fujian and Guangdong has become an important obstacle affecting the sustainable development of their economies. [0003] 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., and the complex structure and large foo...

AI Technical Summary

Problems solved by technology

Distillation is mainly used in super-large seawater desalination treatment. The equipment is large in size and expensive in equipment. Moreover, the existing combined devices need to use electricity and heat energy at the same time. Moreover, such devices are generally combined with power plants, which is not conducive to coastal residents. Life promotion and application of small and medium-sized 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, and the operation is troublesome.

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