New Material Which Could Avoid Corrosion

As the coastal area of the rapid development of petrochemical industry, electric power industries, used as industrial cooling water instead of growing tensions fresh water medium, can save a lot of fresh water resources, the remarkable economic benefit and social benefit. But because of seawater corrosion resistance is strong, when bundle using ordinary carbon steel pipe or stainless steel, sea water as cooling medium can produce severe corrosion of tube bundle, significantly reduce the service life of heat exchanger. In this way, not only increase the number of replacement equipment, but also caused by equipment failure device shutdown too frequently and make the economic benefit is lower. In general, in order to solve this problem, need to upgrade for pipe material, upgrade the materials commonly used mainly copper and titanium tube. Due to high cost were made with titanium users, cupronickel, on the other hand, due to the severe pollution may cause corrosion in seawater and cause failure. At the same time, in the coastal and inland some corrosion conditions of the production device has a tough working environment, such as through the medium of heat exchange equipment in wet hydrogen sulfide or chloride ions content is higher, ordinary carbon steel or stainless steel tube bundle also can not meet the requirement of the corrosion, also need to upgrade for mild steel pipe material, the universality of the solution of the problem, has drawn great attention of the masses of users and design departments. For heat exchanger, and its development to a great extent, is characterized by the adoption of new materials. Due to serious corrosion in many occasions, the countermeasure is a surface corrosion, second is to choose new material corrosion. The main application of the corrosion resistance of new materials is titanium tubes, hartz alloy, super duplex stainless steel, zirconium tube, etc. The above material has good anti-corrosion performance, but they are the common disadvantages of equipment cost is too high, the average company is hard to accept.

To solve the practical problems, there are the enterprise will be the cost of materials with relatively low carbon steel pipe, stainless steel pipe as the base is strong and superior corrosion resistance of thin-wall titanium tube compound, applied in heat exchange equipment, has developed the ideal effect of corrosion, the manufacturing cost is relatively low and the use of performance is the same as pure titanium tube heat exchanger tube bundle