Severe corrosion was observed at the welds and heat affected zones (HAZ) of an alloy NI0276 Eductor at the company, in an environment containing flue gas and brine. The flue gas contains carbon dioxide, hydrogen chloride, chlorine, oxygen and nitrogen. When the flue gas combines with moving brine, it becomes extremely corrosive. To asses the corrosiveness in this environment, five welded alloy coupons
including alloys N10276, N06022 together with titanium and zirconium
samples were exposed in this environment for a period of twelve months. The results indicated that the most corrosion resistant materials in this environment were titanium and zirconium The evaluation results are discussed in this paper. Subsequently the eductor was constructed out of
zirconium R60702, which has been in service for more than 10 months. Inspection results indicate no significant corrosion has occurred.