Material for Salt-Making Evaporation Tank, 2507, 2205 or 316L?

Overview

The refined salt vacuum tank method is a fine salt production technology. By applying the principle of vacuum depression vaporization, inject the purified brine into the vacuum tank and then send the steam to the outer layer of the tank. The multi-effect evaporation crystal salt is dehydrated and dried by centrifuge to become the refined salt product.

By now, the material for salt evaporation tanks can be divided into two categories, 1) one is titanium composite plate with high corrosion resistance and long service life (up to 20 years), which price and cost are both high; 2) the other is stainless steel (316L, or 2205) composite plate with poor corrosion resistance and frequent shutdown maintenance. Although the price and cost of the latter are low, the corrosion often plagues the equipment, leading to poor operation stability and huge loss of maintenance and repair. Therefore, when people talk about the cost-effectiveness of corrosion-resistant materials and RIO, many investors feel awkward. As far as cost-effectiveness is concerned, we believe type 2507 duplex steel is a promising material.