So far, the relevant data shows that more than 120 countries in the world have used desalination technology to obtain fresh water. There are more than 13,000 desalination plants worldwide. The daily production of seawater desalination is about 55.6 million cubic meters, equivalent to 0.5% of global water consumption, and can solve the water problem of 100 million people. However, according to United Nations data released in 2008, more than 1 billion people live in water-scarce areas. By 2025, that number will rise to 1.8 billion. The distance between 100 million, 1 billion and 1.8 billion has led many companies to view the desalination industry as a sunrise industry. In the next 20 years, the international market in the field of seawater desalination will be a nearly $70 billion business opportunity. Such as Israel, the United States, Japan and other countries have now used seawater desalination technology and achieved significant economic benefits. The Chinese government is also paying more and more attention to the desalination industry, and has begun to establish the "comprehensive utilization of seawater resources industrialization demonstration project", which lists seawater desalination as a national high-tech industry. Strengthen national development!

The global water crisis is getting worse. Desalination is considered to be one of the best solutions to the fresh water crisis. Seawater desalination is now widely used in more than 120 countries and regions around the world. There are more than 13,000 desalination plants worldwide. The daily production of seawater desalination is about 35 million tons and is growing at a rate of more than 10% per year. Desalination has become a very good way to solve the problem of water shortage. At present, there are three main international desalination methods, including MSF, LT-MED and ro. Each of the three methods has its own advantages and disadvantages, and its application conditions and scale are different. In our country, the primary use of LT-MED and RO. In the coming years, there will be many desalination projects.

In the next 5-10 years, China will have a huge space for seawater desalination. Through more than 40 years of research, China's desalination technology is now sophisticated, the equipment cost is reduced by 30%-50% compared with foreign countries, and the cost per ton of water is close to the international advanced level. Compared with the South-north water diversion project, the cost per ton of water is lower. The country has introduced a series of encouraging policies, and the scale of seawater desalination in the next decade will be five times that of today. The use of titanium alloy instead of copper alloy in seawater desalination equipment is the future trend. The multi-directional advantage of titanium determines the broad application space of the future desalination pipe. It is estimated that in the next decade, China's demand for seawater desalination titanium will be about 9500-23,520 tons, and the international general will be about 140,63-2812,500 tons. Although domestic demand is not large at the beginning, domestic demand only accounts for 1.6% of the total international demand, which can be said that the overall development space is very large.

With the development of science, technology and economy, our country entered the age of Marine economy, and the important position of titanium gradually appeared. Titanium has excellent seawater corrosion resistance, corrosion fatigue resistance and high specific strength. Titanium is an ideal material. With regard to strong winds, big waves, and oceans up to 10,000 meters deep, it not only requires sturdy, armored light ships, but also has the ability to resist seawater corrosion. It is called "ocean metal" and has become an irreplaceable Marine engineering data. When it comes to life on outlying islands, ships and oil platforms, irrigation and boiler operations, fresh water is essential. With the development of industry, the rural water supply in many coastal areas is becoming increasingly serious. At present, there are many commonly used methods in the world, such as multi-stage flash evaporation, reverse osmosis, freezing and electrodialysis. Each desalination method uses titanium tube evaporators, seawater heaters, pumps, valves and pipelines, but the titanium equipment has been corroded for more than a decade.