Desalination refers to the removal of extra salt and minerals from seawater, and then fresh water treatment. In this process, the plate heat exchanger is used for high temperature heating, so that the evaporation of seawater will separate the salt from the larger volume of impurities. Then, it passes through other processes to become fresh water.

    Due to the scarcity of fresh water resources, desalination is the main way to obtain fresh water. Heat exchange equipment plays a very important role in it, so plate heat exchangers have great application prospects in the desalination industry. The plate heat exchanger can carry out the heat exchange of steam-water and water-water, which is convenient and quick.

    The chloride ion content in seawater is high and corrosive.When using stainless steel plates, as a heat exchange medium，seawater will cause severe corrosion to the heat exchanger, which will significantly reduce the service life of the heat exchanger.

    Therefore, titanium plate heat exchangers made of titanium and titanium alloys are widely used in seawater desalination. Titanium has the characteristics of strong corrosion resistance, high heat transfer efficiency, smooth surface without scaling layer, small specific gravity, high strength, small equipment volume and quality. Therefore, it is widely used in heat exchange systems such as chemical industry, petroleum, ship, seawater desalination, petrochemical industry, etc. And titanium has strong corrosion resistance to chlorine.