New trends in the application of titanium tubing

      In recent years, with the development of industry and the increasing expansion of the city scale, the increasing lack of water resources has become a major problem limiting the development of human society, in addition to advocating water conservation, wastewater purification and recycling, desalination of seawater is one of the best ways to solve the problem of lack of water resources. Up to now, desalination skills in more than 120 countries and regions around the world have used, according to the relevant organizations: now there are more than 13,000 desalination plants around the world, and the amount of seawater can be desalinated 35 million tons a day, and to more than 10% per annum to be able to increase the speed.

     Now commonly used desalination processes are reverse osmosis (filtration), solar energy, low-temperature multi-effect distillation skills, multi-stage flash distillation, electrodialysis, pressure gas distillation, dew point transpiration, water and electricity cogeneration method, thermal membrane cogeneration method, etc., along with non-pressurized immersion adsorption method and other new skills. In these methods, multi-stage flash evaporation, low-temperature multi-effect distillation, and anti-impregnation methods are the mainstream approaches. China mainly uses low-temperature multi-effect distillation and reverse-immersion two approaches, and it is reported that in the next few years, there will be a number of seawater desalination projects on the ground.

     After more than 40 years of research, China's seawater desalination skills have become increasingly sophisticated, large-scale use of seawater desalination has a cost advantage, compared with South-to-North Water Diversion the cost is lower. Together, the state also introduced a series of encouraging policies, In the next 10 years the scale of seawater desalination will be 5 times the present.

       Other, desalination equipment in titanium tubes will gradually replace the original copper alloy tube, the two comparisons, titanium tube has the following advantages: 1, first Compared to the copper alloy tube, titanium tube wall thickness is thinner, less pipe dosage.
2, titanium thermal conductivity of 17W / (m - k), low thermal conductivity, thermal conductivity is better.
3, the use of titanium tubing is more cost-effective. Titanium tube price can compete with the copper alloy tube, because of titanium's low density, and wall thickness together, the same length of titanium tube quality is only 50% of the copper alloy tube, while the titanium tube wall thickness of 50% of the copper alloy tube, the same heat transfer area of the titanium tube quality of the copper alloy tube is only 1/4. Visible, titanium tube is competitive in terms of price.

4, the service life of the titanium tube is longer. Because seawater is often mixed with sediment and sea life, they are attached to the heat transfer tube and tube ends, which will corrode the copper alloy tube, copper alloy will also be subject to seawater corrosion of Br-. Titanium tubes will not have this problem, especially to kill bacteria in seawater, have to inject oxygen, more need to use good corrosion resistance of titanium tube.