The new tendency of titanium pipe application - desalination

In recent years, with the development of industry and the  the extendibility of the city, the growing shortage of water resources has become a major outstanding issues to restrict the development of human society, in addition to advocating water conservation, recycling waste water purification, seawater desalination is one of the best way to solve the problem of water shortage. Up to now, desalination technology in more than 120 countries and territories around the world have been using, according to the relevant agency statistics: There are now more than 13,000 global desalination plants, can desalt 35 million tons seawater one day, and rising at annual more than 10 percent to growth.

Now commonly used in the desalination process are: reverse osmosis (filtration), solar method, low-temperature multi-effect distillation, multi-stage flash, electrodialysis, gas pressure distillation, evaporation dew point, hydropower generation, thermal film generation method, at the same time there is a non-pressurized penetration assay and other new technologies. In these methods, the multi-stage flash method, the low-temperature multi-effect distillation and reverse osmosis is the mainstream approach.The low-temperature multi-effect distillation and reverse osmosis are two methods mainly used in our country, it is learned that the next few years, there will be a number of desalination projects launched.

After 40 years of research, China's desalination technology has matured, large-scale desalination applications already have a cost advantage, lower cost compared with the diversion. Meanwhile, the state also introduced a series of encourage policies,the scale desalination in next ten years will be five times than now.

In addition, titanium pipe desalination equipment will gradually replace the original copper alloy pipe,titanium pipe has the following advantages:

1 Compared with copper alloy pipe, titanium pipe wall thickness is thinner, less the amount of pipe .

2 The thermal conductivity of titanium is 17W / (m · k), low thermal conductivity, good thermal conductivity.

3 Higher cost-effective to use of titanium pipes.Due to the low density of titanium, when the wall thickness and length are the same,the weight of titanium pipe is only 50% of the copper alloy pipe; when the titanium pipe wall thickness is 50% of copper alloy pipe, the weight of same heat transfer area is only 1/4 of copper alloy pipe.So titanium pipe is competitive in price.

4 Titanium pipes lifetime is longer. Because seawater is often mixed with sand, sea creatures, they are attached in the heat transfer pipe and the pipe end, will erode copper alloy tube, copper alloy will be subject to corrosion in seawater Br-. The titanium pipe will not appear on this problem, especially in order to kill bacteria in seawater, when forced to inject oxygen,need to use good corrosion resistance of titanium pipes.

So titanium pipe used for water desalination field is a new trend of the future!