Four Years of Operating Experience with Type III Strong Base Anion Resin

摘要

In 1992, Jim k-ving and James ArnDale of Purolite Internationalrnintroduced the world to a new strongrnbase anion resin based on the Npropanolaminernstructure. The newrnresin is referred to as Type III strongrnbase anion. Through furtherrnlaboratory studies and field trials itrnwas determined that Type III couldrnresin will perform in the field asrndemonstrated in the lab with the keyrnbenefits being:rn1. The stability of strong basernsites in the presence ofrntemperatures approachingrn120°F;rn2. Maintaining low silica Bakagernsimilar to that for Type-lrnanions;rn3. In addition, benefiting from thernregeneration efficienciesrncomparable to that of Type IIrnsurpassing or maintainingrnthroughput capacities greaterrnthan those of a Type-II resin.rnAdditionally, the Type-Ill has goodrnability to tolerate organic fouling andrncleaning.rnIn a follow up paper, IWC - 96 - 48’rnpresented by Terrence Heller, wernwere given the details of a 50 ft3 trialrnbed of Type Ill SBA installed at NewrnPlymouth Power Station. The trialrnbed demonstrated two importantrnfactors:rn(4 - That the overall operatingrnperformance increased significantly,rn(B) - That the loss of strong basernfunctionality dramatically decreasedrn(12% loss over 30 months) vs. thernType II SBA, (27% loss).rnThe challenged issued by the IWCrnpaper discusser, was to providernfurther data for Type III SBArnperformance for silica removal atrnhigher temperatures. This paper willrnanswer part of the challenge.