Frozen seawater desalting device system adopting heterogeneous sedimentation and crystallization nucleation way

Abstract

The invention relates to the field of frozen seawater desalting and in particular relates to an ice crystal nucleation and frozen seawater desalting device system adopting a micro-particle sedimentation way. The ice crystal nucleation and frozen seawater desalting device system comprises a refrigeration mechanism, a micro-particle storage device, a seawater frozen and crystallized ice-water separation device, a waste sweater micro-particle separator and a freshwater micro-particle separator, wherein the seawater frozen and crystallized ice-water separation device comprises two refrigeration agent flowing heat exchange shells, an ice crystal conveyor belt and ice crystal scraping knives; grooves are formed in the refrigeration agent flowing heat exchange shells; the refrigeration agent flowing heat exchange shells are symmetrically arranged along the axis direction; the ice crystal conveyor belt is located between the two refrigeration agent flowing heat exchange shells and is arranged along the axial direction of the refrigeration agent flowing heat exchange shells; the refrigeration agent flowing heat exchange shells are internally provided with the ice crystal scraping knives along the axis direction of the heat exchange shells; rotation directions of the ice crystal scraping knives in the two refrigeration agent flowing heat exchange shells are opposite. By adopting the ice crystal nucleation and frozen seawater desalting device system provided by the invention, the formation of salt cells in an ice crystal growth process can be effectively inhibited; furthermore, the growth of ice crystals in seawater is promoted, and freezing, crystallization and desalting of the seawater are realized.

Description

Technical field [0001] The patent of the present invention relates to the field of frozen seawater desalination, in particular to an ice crystal nucleation frozen seawater desalination device system using a particle sedimentation method. Background technique [0002] The shortage of fresh water resources makes seawater desalination an important way to prepare fresh water. Ice is a single ore rock and cannot coexist with other substances. Therefore, the water will automatically remove impurities during the crystallization process to maintain its purity. The freezing method of desalination uses this principle. After ice crystals are washed, separated, and melted, fresh water is obtained. When the sea water is frozen, the salt is excluded from the ice crystals. The longer the ice crystals are formed, the less the salt content is. This is because some of the salt will be mixed between the ice crystals in the form of salt cells during the freezing process of the sea water. "Salt cel...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high salinity in seawater freezing method in the prior art, and proposes a frozen seawater desalination device system using heterogeneous sedimentation crystallization nucleation method, which can not only effectively inhibit ice crystal growth The formation of "salt cells", and further promote the growth of ice crystals in seawater, and realize the desalination of seawater freezing and crystallization

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