Original title: What are the advantages of titanium tubes in seawater
desalination equipment? In today's society where the water environment is under
stress, we are gradually realizing that desalination can alleviate the water
situation. So what is desalination equipment? Seawater desalination equipment
refers to the equipment specially used to desalinate seawater. Seawater
desalination mainly uses two methods to desalinate seawater, namely distillation
and reverse osmosis. Titanium tubes in seawater desalination equipment will
gradually replace the original copper alloy tubes. Compared with the two,
titanium tubes have the following advantages: 1. Under the same operating
conditions, the wall thickness of titanium pipe is thinner and the amount of
pipe used is less. Generally,
Titanium welding
pipe, the wall thickness of copper alloy pipe is 0. 9mm-1。 2mm; replaced by
titanium tube ? Where corrosion is low, the available wall thickness is 0. 5mm
thin-walled tube. And 2,
ti6al4v,
the titanium tube has good thermal conductivity. The thermal conductivity of
titanium is 17 W/ (m · K), that of aluminum brass is 100 W/ (m · K), and that of
70/30 cupronickel is 29 W/ (m-k). The thermal conductivity of titanium is the
lowest. However, the use of thin-walled titanium tubes,
titanium tubing price ,
titanium round bar, although the
thermal conductivity is worse than that of aluminum brass, is comparable to that
of 90/10 cupronickel and better than that of 70/30 cupronickel. And 3, the cost
performance of the titanium tube is higher. The price of titanium tube can be
compared with that of copper alloy tube. Because of the low density of titanium,
the mass of titanium tube with the same length is only 50% of that of copper
alloy tube when the wall thickness of titanium tube is the same. When the wall
thickness of titanium pipe is 50% of that of Copper alloy tube, the mass of
titanium pipe with the same heat transfer area is only 1/4 of that. It can be
seen that titanium tubes are competitive in terms of price. And 4, the service
life of the titanium tube is longer. Because the seawater is often mixed with
sediment and marine organisms, they attach to the heat transfer tube and the
tube end, which will erode the copper alloy tube, and the copper alloy will also
be corroded by Br- in the seawater. However, in use, the hydrogen introduced
from the external environment is called external hydrogen, specifically, active
hydrogen atoms are generated on the surface of the metal through the following
ways, and then enter the metal: (1) Titanium equipment is placed in a medium
containing molecular hydrogen,
titanium
tubing price, such as a high temperature hydrogen atmosphere. (2) Hydrogen
produced by general corrosion or local corrosion of titanium is absorbed by
titanium. For example, crevice corrosion is often accompanied by hydrogen
absorption. (3) Hydrogen produced when titanium and electronegative metals are
subject to galvanic corrosion or cathodic protection. The latter two kinds of
hydrogen embrittlement caused by electrochemical corrosion of the cathode are
more frequent and can occur without high temperature and high pressure, which
should be paid more attention to. Return to Sohu to see more Responsible
Editor:.
yunchtitanium.com
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