Application of stainless steel in Engineering
1 sea water will become one of the most important sources of drinking water.
Water is the most important resource for human beings. Because of the expansion of population and the increase of water consumption, the fresh water resources have been reduced, and the shortage of water resources is becoming more and more serious in many parts of the world. It was predicted that in nineteenth Century for coal, oil in twentieth Century, may compete for water in twenty-first Century. The earth's surface area of 2/3 water covers, but the water reserves of 97% seawater and brackish water desalination, must through the utilization of seawater desalination, therefore came into being and developed rapidly. However, only 1% of the world's drinking water through desalination. There are more than and 120 countries in the world with more than 12500 desalination plants. 47% of the world's desalination capacity is concentrated in the middle east. Because more than 1/4 of the world's population lives within the range of 25km from the coastline, the sea will become one of the most important sources of drinking water.
2 why choose etching stainless steel?
There are two main methods of desalination: thermal and membrane. The thermal process consists of multi-stage flash distillation (MSF) and multi effect distillation (MED). The membrane method consists of repeated osmotic effusion (RO) and Electrodialysis / repetitive electrodialysis (ED/EDR). Stainless steel because of corrosion resistance characteristics in a variety of desalination engineering.
All desalination methods are the same process. The introduction of seawater is divided into two departments, one sector for treatment, another sector concentration. The concentration of seawater was decreased and the concentration of seawater was much higher than that of the original seawater. The equipment materials used in seawater desalination process need to have erosion resistance. The selection and design principles of materials depend on the service environment of materials. Stainless steel because of its corrosion resistance and durability make it an ideal material.