Titanium For Seawater Desalination

Titanium For Seawater Desalination

The drought and shortage of potable water issue has been affecting the whole world for many years. A lot of countries, such as China, South Africa, Egypt, India, Saudi Arabia, UAE, Singapore, etc, have turned their sight to the vastest resource of water on the earth – seawater. Seawater desalination is the process of separating general potable water from the briny seawater.

Desalination Technologies

There are two basic technology categories for seawater desalination: membrane/ reverse osmosis, and thermal distillation or evaporation.

In membrane/ reverse osmosis process, the seawater, at a high pressure, is forced through a salt-excluding membrane in the opposite direction (naturally the water will flow from the dilute solution to the high concentrated solution) to obtain drinking water.

The function of thermal distillation is also simple – the seawater is evaporated from one spot and is condensed in another, leaving salt and impurities behind.

The titanium and its alloys have good resistance to pitting corrosion, hydrogen damage as well as erosion in seawater environment. Titanium finds its most applications in the thermal distillation of seawater, used for tubing, valves, heat exchangers, evaporators, condensers and other vessels, etc.

Titanium For Seawater Desalination

Titanium pipe fittings

Titanium Pipe Fittings

Due to the high corrosion resistance of titanium to seawater, the original copper alloy pipes have been replaced by titanium pipes because copper alloys are not resistant to corrosion. Even the casing of offshore oil exploration logging instruments is heavily used in titanium alloys.
Titanium heat exchangers

Titanium coil heat exchanger

Titanium cooling tube has good heat exchange, strong corrosion resistance, and excellent stamping performance. It is used to manufacture condensers. The tube can be used in polluted seawater floaters, high-content water and higher flow rates. Heating effect in chemical equipment, heating, cooling