Sodium Chlorate-Based Generation of Chlorine Dioxide Yields Improved Corrosion Rate Results and Fewer Equipment Failures Compared to Chlorine Treatment in a Cooling Systme

摘要

Detailed corrosion coupon data was collected at a Southeastern United States chemical manufacturing plant from January 1986 through March 1996. During this period the plant progressed from gaseous chlorine addition for the control of microorganisms to sodium hypochlorite and finally chlorine dioxide. Thirty day, corrosion coupon studies were conducted throughout this transition period. Initial results indicate that since the introduction of chlorine dioxide and despite numerous incidents of process contamination, mild steel corrosion rate averages have declined dramatically and single incident corrosion rates have been significantly reduced.