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绪言到目前为止,瑞士铝业公司(以下简称“瑞铝”)在欧洲使用的铝电解槽主要是边部加工预焙槽,其特点是单位电耗低,阳极单耗小。电解车间装有“瑞铝”式的天窗湿法洗涤器,即喷水式过滤器。这些洗涤器的净化效果较好,对气氟的净化效率约为95％,对固氟的净化效率为50～60％。我们认为气氟的危害是主要的。在大多数国家的环保法规中,对排放氟的限制日趋严格,无论是对全氟(公斤/吨铝)排放标准,或对每台电解槽的年全氟排放量标准均如此。
INTRODUCTION So far, aluminum smelters used by Swiss Aluminum (hereinafter referred to as “Rui Aluminum”) in Europe are mainly pre-baked pre-baking tanks with features of low power consumption per unit and small anode consumption. Electrolysis workshop equipped with “Swiss aluminum” type sunroof wet scrubber, that is, water filter. The scrubbing effect of these scrubbers is better, with a purge efficiency of about 95% for fluorine and 50 ~ 60% for fluoride. We think the harm of fluorine is the main one. In most countries’ environmental regulations, the restrictions on the emission of fluorine are becoming more and more stringent, either for perfluoro (kg / tonne aluminum) emission standards or for annual perfluorinated emissions per cell.