What are the advantages of using titanium tubes for reverse osmosis automatic ultrapure water equipm

What are the advantages of using titanium tubes for reverse osmosis automatic ultrapure water equipment?

by:Ocpuritech     2021-05-22
What are the advantages of using titanium tubes for reverse osmosis automatic ultrapure water equipment? Author: As the water pollution is getting worse, whether it is industrial production and people's drinking water is threatened, and now science and technology development, research and development of ultra-pure water reverse osmosis automatic device can solve this problem. The water quality treated by the reverse osmosis automatic ultrapure water equipment meets the national standards for industrial and ultrapure water, so the reverse osmosis automatic ultrapure water equipment is an indispensable equipment for healthy water. That is, the distillation method and reverse osmosis method treat ultrapure water. Titanium pipes in reverse osmosis automatic ultrapure water equipment will gradually replace the original copper alloy pipes. Compared with the two, titanium pipes have the following advantages: 1. Under the same operating conditions, the wall thickness of the titanium pipe is thinner and the amount of pipe material is less. . Generally, the wall thickness of copper alloy pipes is 0.9mm-1. 2mm; instead of titanium pipes, thin-walled pipes with a wall thickness of 0.5mm can be used in places with low corrosiveness. 2. Titanium tube has good thermal conductivity. The thermal conductivity of titanium is 17W/(m·k), the thermal conductivity of aluminum brass is 100W/(m·k), and the thermal conductivity of 70/30 cupronickel is 29W/(m·k). The thermal conductivity of titanium is the smallest. But using thin-walled titanium tube, although the thermal conductivity is worse than aluminum brass, it is equivalent to 90/10 cupronickel and better than 70/30 cupronickel. 3. The use of titanium tubes is more cost-effective. The price of titanium pipes can compete with copper alloy pipes. Due to the low density of titanium and the same wall thickness, the quality of titanium pipes of the same length is only 50% of copper alloy pipes. When the wall thickness of titanium pipes is 50% of copper alloy pipes, the same transmission The quality of the titanium tube in the hot area is only 1/4 of that of the copper alloy tube. It can be seen that titanium tubes are competitive in terms of price. 4. Titanium tube has longer service life. Since water is often mixed with silt and marine organisms, they adhere to the heat transfer tube and at the end of the tube, which will corrode the copper alloy tube, and the copper alloy will also be corroded by Br- in the water. But in use, the hydrogen introduced from the external environment is called external hydrogen. Specifically, it generates active hydrogen atoms on the surface of the metal through the following ways, and then enters the metal: (1) The medium where the titanium equipment is located contains Molecular hydrogen, such as high temperature hydrogen atmosphere. (2) Hydrogen generated from general corrosion or partial corrosion of titanium is absorbed by titanium. For example, Chin's crevice corrosion is often accompanied by hydrogen absorption. (3) Hydrogen generated when titanium and negatively charged metals undergo galvanic corrosion or cathodic protection is overprotected. The latter two types of hydrogen embrittlement caused by electrochemical corrosion of the cathode are more frequent, and can occur without high temperature and high pressure, and should be paid more attention.
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