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Application area Engineering case Industry information Membrane separation technology
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Application
某家核電站,其被要求將電站鍋爐進水中的鐵離子從 200ppb 降至 10ppb。因為過量的鐵離子存在將導(dǎo)致以下兩個問題:
1、鐵離子將會在蒸汽發(fā)生器的蒸發(fā)管內(nèi)壁上形成結(jié)垢,導(dǎo)致過熱而發(fā)生管道爆炸。
2、膠體鐵也會導(dǎo)致凝結(jié)水混床離子交換器被污染而失效。
經(jīng)過一系列成功的實驗后,廈門福美科技的一套超濾系統(tǒng)被安裝,其成功的將鐵濃度降至 10ppb 以下。超濾膜元件具有耐高溫,pH 范圍廣,低壓操作等優(yōu)點。這套處理量為 560gpm (127m3/h) 的超濾系統(tǒng)已經(jīng)工作了十年以上,至今運行良好。此套超濾系統(tǒng)的優(yōu)點是減少了處理鐵離子所花費的時間,同時使核電站的起動時間從數(shù)天降至 8 個小時。核電站的超濾系統(tǒng)由并列的三套子系統(tǒng)組成,每套子系統(tǒng)由 6 支膜管組成,每支膜管中裝 3 支8040膜,因此整套系統(tǒng)由 54 支8040膜組成。其它的一些結(jié)構(gòu)材料為:FRP 膜管;碳鋼進水管道; 不銹鋼滲透水收集管道。
鐵離子與懸浮物分析
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