Pick to: seawater desalination is to solve the lack of water resources the effective method to human. Is known as "Marine metal" titanium and its alloy in seawater superior corrosion resistance, is all in natural water the corrosion resistance of metal materials, and of low density, high strength, heat resistant performance is good, is a desalination plant with the most competitive materials. In this paper, the seawater desalination technology and titanium and its alloy in seawater desalination industry application status are reviewed, and the titanium and its alloy in seawater desalination industry application prospects were analyzed.
Keywords: titanium and its alloy, seawater desalination, application, prospect analysis
1 lead speech
Water is the source of the life, fresh water is the human survival and the development important resources. The earth about 70% of the area covered by water, 97.5% of the water to the sea, in the remaining 2.5% of the fresh water, the available water resources accounted for only 0.26% of the total water the earth. At present, the global water shortage problem is getting worse, our country is a serious shortage of water resources of the country, and the shortage of water resources in China is restricted the sustainable development of society and economy is one of the major problems [1-3]. Seawater desalination is currently open up new water sources, realize the sustainable utilization of water resources, water resources to solve human lack of effective methods.
Recently, the general office of the state council issued "about to speed up the development of seawater desalination industry opinion", has been clear about the "1025" during seawater desalination industry development goal: by 2015, our country desalination capacity is 2.2 million - 2.6 million cubic meters/day, Seawater desalination raw materials, equipment manufacturing innovation rate above 70%. According to Chinese desalination association, China's 2011 years of desalination capacity of 660000 cubic meters/day [4], this means that the next few years China desalination capacity will increase 3 ~ 4 times, seawater desalination industry will become China's most development potential of the emerging industry.
We know, is known as "Marine metal" titanium and its alloy in seawater superior corrosion resistance, is all in natural water the corrosion resistance of metal materials, the seawater in the corrosion resistance of stainless steel is 100 times, and of low density, high intensity, good performance of heat. Therefore, from material performance, reliability, service life, maintenance, and other comprehensive consideration, titanium and its alloys is undoubtedly desalination plant with the most competitive materials. Titanium in the desalination plant application including heat exchanger, salt water heater, condenser, distiller, evaporator, pump, valve, pipe [5-6].
In this paper, the seawater desalination technology and titanium and its alloy in seawater desalination industry application status are reviewed, and the titanium and its alloy in seawater desalination industry application prospects were analyzed.