Selection of Materials for Circular Disposal Acid Pump in Aniline Unit

In order to select a proper material for the circular disposal acid pump in the aniline unit,the weight-loss method,SEM and EDS techniqus were adapted to study the anticorrosive properties of Hastelloy C alloy,804 alloy,20 alloy,904L and 316L stainless steels in the circular disposal acid at 80 ℃.The results showed that except Hastelloy C alloy,the other four kinds of alloys had excellent anticorrosive properties in the circular disposal acid at 80 ℃.