Application of titanium alloy in offshore engineering and pharmaceutical manufacturing
Application of titanium alloy in ocean engineering
At present, titanium used in offshore engineering has become one of the main fields of titanium civil application.
Offshore oil production equipment mainly includes oil production platform and auxiliary equipment, including crude oil cooler, riser, pump, valve, joint and clamp. These equipment are in contact with sulfide, ammonia, chlorine and other media in seawater and crude oil. Because titanium has excellent corrosion resistance in these media, the United States used offshore oil platform struts made of titanium in its oil fields in the early 1970s, and made tubular heat exchangers and plate heat exchangers from titanium. The United States has used about 100 titanium heat exchangers on drilling platforms in the North Sea oil field.
Early seawater desalination plants used copper alloy, carbon steel and other materials. Because these materials are not resistant to seawater corrosion and have low production efficiency, they were quickly replaced by titanium with excellent seawater corrosion resistance. In seawater desalination, the main application of titanium is the heater heat transfer tube of desalination device. A Japanese company built 10 distillation units with a daily output of 30000 tons of fresh water for Saudi Arabia, using 3200 tons of titanium tubes. The average daily output of 10000 tons of units requires 107 tons of titanium. China's Tianjin, Shandong and other places have or are building desalination units.
Titanium and its alloys are widely used in ships, such as hull structures, deep-sea survey ships and submarine pressure housings, pipes, valves, rudders, shaft brackets, accessories, thrusters and propeller shafts in power driven devices, heat exchangers, coolers, hull sonar fairings, etc. In addition, titanium equipment is also used in marine fishery, ocean heat energy conversion and other fields. For example, Japan has used a large number of titanium metal nets and titanium tube heat exchangers to maintain a certain seawater temperature in artificial aquaculture technology; In the field of ocean heat energy conversion, titanium equipment has been used in the main equipment evaporator, condenser, seawater suction pipe and loop system of thermal power stations in the United States and Japan, and good results have been achieved.
Application of Titanium Equipment in Pharmaceutical Industry
In the pharmaceutical production process, the equipment is exposed to hydrochloric acid, nitric acid, acetic acid, sulfuric acid and its salts, organic solvents and other media, and the equipment corrosion is very serious. If the production is often stopped for maintenance, the production will be affected. Moreover, the pollution caused by equipment corrosion will also affect the product quality.
Air flow drying devices in the pharmaceutical industry, including pipes, screw feeders, heaters, cyclones and other equipment, use stainless steel equipment to produce obvious corrosion. Iron ions in the corrosion products may also pollute the products, making the iron content in the products exceed the standard and affecting the product quality. The problem of iron pollution can be solved by selecting titanium materials with corrosion rate of 0.0008~0.003mm/a.
