EVAPORATORS MADE OF SOLID DUPLEX STAINLESS-STEEL - A NEW APPROACH TO REDUCED COSTS

By utilizing the strength and the corrosion resistance of the two dupl ex stainless steels S32304 and S31803 when designing evaporator vessel s in MSF-plants, it is possible to construct these of lighter weight a nd more cheaply than if made of carbon steel, The two different levels of corrosion resistance enable the selection of a grade with a perfor mance either similar to that of 316/316L or very close to that of type N08904, Experience from fields of application other than desalination have shown that duplex stainless steel can be the cost effective alte rnative not only to carbon steel but also to conventional austenitic s tainless steels like 316/316L.