89-11: Investigation of Alternative Inhibitor Programs for Highly Corrosive Sidestream Softening

89-11: Investigation of Alternative Inhibitor Programs for Highly Corrosive Sidestream SofteningThe poor performance of a particular corrosion inhibitor package in an open evaporative cooling system resulted in increased efforts to find alternate inhibitors, which would give acceptable corrosion results. Through the molybdate based inhibitor is used with very good results in other towers with similar waters the results in this tower were marginal to poor. A laboratory investigation was undertaken to assess the performance of a conventional HEDP

By this analysis the attempt can be made to more thoroughly address deficiencies in engineering specifications that may not tell the whole story regarding the magnitude of risk associated with utilizing certain polymer formulations within cooling towers

the low noise demands had an impact on the selection on all other equipment like E-mothers and gearboxes

chlorine dioxide

This new inhibitor can not only replace phosphorous-based inhibitors

alkaline cooling waters and provide increased cycles of concentration without the need for acid feed

Information is provided on the comprehensive program that was instituted to ensure positive results

This is due to the environment

Such technology allows for greater plant siting flexibility

It also aims to improve the condition of underground and surface water to make them more sanitary

Case histories of actual cooling water applications are discussed which show when and where molybdate-based products have outperformed other

Product application

Evaporative