Method and device for desalinating seawater by airflow impact, rotating suspension and freezing

Abstract

The invention discloses a method and a device for desalinating seawater by airflow impact, rotating suspension and freezing. According to the method and device, cold airflow is sprayed into a seawater freezing desalinating chamber through a nozzle; water is atomized through another group of nozzles and then sprayed into the seawater freezing desalinating chamber; two airflows are sprayed into the seawater freezing desalinating chamber through the nozzles which are at different angles in the horizontal direction and grouped along the vertical height direction; the atomized airflows are of density difference along the height direction, and the nozzles are uniformly peripherally distributed, so that the airflows suffer from impact rotating and suspension in the seawater freezing desalinating chamber; the atomized drops moving from bottom to top can be frozen into ice crystal particles under the effect of evaporating and freezing of the cold airflows, and the ice crystal particles continuously grow; after growing to exceed the bearing capacity under the effect of airflows, the ice crystal particles fall to a sieving plate at the lower part of the seawater freezing desalinating chamber and can be recovered to obtain the ice particles with expected dimension. The method and device have the advantages that natural refrigerant can be utilized and water is not polluted; the device is simple in structure and small in energy consumption, does not need operation under vacuum, and realizes continuous operation.

Description

technical field [0001] The invention relates to a seawater desalination method and device for airflow impingement rotation suspension freezing seawater desalination, which belongs to seawater desalination technology. Background technique [0002] The increasingly serious shortage of fresh water in the world has become a serious problem that threatens human survival and restricts economic development. Seawater desalination, as an open source and incremental technology of water resources, has become an important way to solve this crisis. At present, there are more than 15,000 seawater desalination plants in the world, and more than 120 countries obtain fresh water through seawater desalination. There are dozens of seawater desalination methods at home and abroad, but the actual methods used are mainly distillation (including flash evaporation and low-temperature distillation), reverse osmosis, and freezing. Both distillation and reverse osmosis need to consume a large amount...

AI Technical Summary

Problems solved by technology

The main difference between the three is that the steam is removed in different ways, but they all need to use additional equipment to deal with the water vapor generated during the evaporation and freezing process, and the maintenance of vacuum during the desalination process increases the initial investment and power consumption.

Images