In recent years, many countries and regions have devoted themselves to the comprehensive utilization of geothermal resources due to energy shortage. Titanium is an ideal material for geothermal development in terms of performance, maintenance, cost, and safety. With the development of low-cost new alloy and processing technology, the application of titanium in the geothermal industry will increase.
The thermal and oxidizing chlorination conditions can cause local erosion of stainless steel or nickel-based alloys, which can be well solved by using titanium materials. Titanium materials are used in the equipment and key components that are directly exposed on the surface to brackish geothermal water, including valves, metering meters, pipelines, turbine components, expansion pipes, steam water separation units, condensers, impellers, and axles. More than 450 tons of GR.29 titanium alloy hot-rolled seamless tubes have been used in salt water production and reinjection in Salton Sea geothermal salt wells in the United States.
In desalination, the U.S, Japan, and China have also seen a big increase in the amount of titanium used in desalination plants in recent years. A Japanese company has built 3,200 tons of titanium pipes for a desalination plant in Saudi Arabia; the amount of titanium used in desalination projects in Tianjin and Shandong of China is about 250 tons. The use of titanium in Marine facilities has also increased. Large floating Marine structures that have been implemented or planned to use titanium include airports, port logistics bases, crude oil and natural gas storage bases, Bridges, sports and entertainment facilities, etc.
Besides that, the comprehensive utilization of seawater is one of the important projects in Marine engineering. The condenser of the coastal power station is the equipment with a large amount of seawater, and the service life of which is extended after using titanium, and the heat exchange efficiency, as well as safety, is also improved. China has used a large amount of titanium to replace other materials to make the seaside power station condenser.
Materials used in Marine engineering require high performance, high function, safety reliability, practicability and low cost in addition to being resistant to Marine corrosion environment. The ship and some equipment parts, such as hull, heat exchanger, pump, valve, pipeline, etc. are immersed in seawater for a long time and are extremely vulnerable to seawater corrosion. Titanium can solve problems such as submarine pipeline leakage caused by corrosion/erosion and ship failure caused by Marine life. It not only has excellent corrosion resistance to seawater but also can reduce ship weight, reduce maintenance cost and extend service life. Titanium is used in everything from ferries, fishing boats, naval ships to deep-sea submarines.