Apparatus for utilizing natural cold source to realize seawater desalination

Abstract

A disclosed apparatus for utilizing natural cold source to realize seawater desalination comprises a glycol aqueous solution storage device communicated with natural cold wind at the exterior and connected with a supercooler via pipelines in a parallel manner; the apparatus also comprises a seawater zone of which the outlet port is connected with a shell-and-tube heat exchanger channel; the output pipe of the shell-and-tube heat exchanger channel is connected with a pretreatment device; the output end of the pretreatment device is connected with the supercooler; the output pipe of the supercooler is successively connected with a sonocrystallisation promoting device and an icy slurry separation device; the output end of the icy slurry separation device is provided with an ice crystal outlet pipe; the lower end of the ice slurry separation device is provided with a water returning pipe; the water returning pipe is connected with one end of a backflow channel of the shell-and-tube heat exchanger channel; and the other end of the shell-and-tube heat exchanger channel is connected with the seawater zone in an output connection way, so that continuous cycle of the apparatus is realized. The apparatus overcomes the disadvantages that conventional seawater desalination technologies are relatively high in cost, system equipment land occupy large area and a large amount of fossil energy is consumed, the natural cold energy of air in winter in the north is fully utilized, the fossil energy is saved, and the apparatus has the advantages of being good in heat exchanging performance, high in system efficiency, simple, capable of continuously operating for preparing ice slurry and recycling cold energy, and the like.

Description

technical field [0001] The invention relates to a seawater continuous desalination technology for producing fresh water, especially a seawater desalination technology for reducing costs, reducing the area occupied by system equipment, being environmentally friendly, using less fossil energy, and using natural cold sources to continuously produce ice slurry to produce fresh water. Background technique [0002] The earth's fresh water resources are scarce. 97% of the water on the earth is seawater or brackish water, and only 3% is fresh water, while 70% of the fresh water is located in the ice sheets at the poles, and about 30% is more than the moisture and moisture in the soil. The water in the underground aquifer exists in the form of water, and human beings can directly use less than 1%. my country's vast northern and coastal areas are severely deficient in water resources. According to statistics, the total area of ​​water-scarce areas in northern my country reaches 580,00...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to make full use of natural cold sources, reduce fossil energy consumption, and overcome the shortcomings of low system efficiency, high initial investment, and difficulty in ice transportation on the basis of inheriting the advantages of the original natural cold source ice-making and desalination seawater technology. Provide a technology that uses natural cold sources to produce ice slurry to continuously desalinate seawater. This technology can achieve low-investment and high-efficiency continuous desalination of seawater by producing dynamic ice slurry instead of solid ice

Images