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Application area Engineering case Industry information Membrane separation technology
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某家核电站,其被要求将电站锅炉进水中的铁离子从 200ppb 降至 10ppb。因为过量的铁离子存在将导致以下两个问题:
1、铁离子将会在蒸汽发生器的蒸发管内壁上形成结垢,导致过热而发生管道爆炸。
2、胶体铁也会导致凝结水混床离子交换器被污染而失效。
经过一系列成功的实验后,厦门福美科技的一套超滤系统被安装,其成功的将铁浓度降至 10ppb 以下。超滤膜元件具有耐高温,pH 范围广,低压操作等优点。这套处理量为 560gpm (127m3/h) 的超滤系统已经工作了十年以上,至今运行良好。此套超滤系统的优点是减少了处理铁离子所花费的时间,同时使核电站的起动时间从数天降至 8 个小时。核电站的超滤系统由并列的三套子系统组成,每套子系统由 6 支膜管组成,每支膜管中装 3 支8040膜,因此整套系统由 54 支8040膜组成。其它的一些结构材料为:FRP 膜管;碳钢进水管道; 不锈钢渗透水收集管道。
铁离子与悬浮物分析
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