Update on the Impact of Amine Chemistry on Resin
By Greg Bachman, Doug Kellogg, and Marty Wilkes, Ph.D.
Corrosion control in the field of steam and power generation has been of concern long before ion exchange (IX) and amines were developed. The topic of boiler and steam generator chemical additives is certainly worthy of a separate paper, if not a comprehensive textbook, but the authors wanted to mention a few specific examples of interest for this article. The emphasis of this article is on secondary chemistry in pressurized water reactor (PWR) designed nuclear plants, but has application and relevance to other systems where amines and resin are used together. Corrosion, metal oxides transport, scaling deposits, creation of hot spots, and thinning of metal materials are of particular concern in the coolant and steam cycles. Acids/carbonates, phosphates (displaced carbonate in the 1930s), and even compounds derived from potato skins, sawdust and coffee grounds, distorted the crystal structure of the precipitated salts and allowed for easier dispersion and ultimately more successful blowdown.
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