F>C: Combined Treatment of Pot Gases and Anode Baking Furnace Fumes
2016
Dry scrubbing technology is well known and used to treat either gases emitted by the reduction pots (Gas Treatment Centers) or fumes collected from the anode baking furnaces (Fume Treatment Centers). In fewer cases, the treatment of these gases and fumes has been realized by a common dry scrubbing system; fumes emitted by the furnaces are collected and mixed to the gases coming from the reduction pots. The mixed gases and fumes are then scrubbed together by a unique GTC designed and sized accordingly. This paper details the solutions implemented at Aluminium Dunkerque for Rio Tinto Alcan. Technical performances, investment costs and operation costs are detailed and compared with classical solutions, using a GTC and an FTC. Technical and organizational recommendations, necessary to guarantee the success of this solution are given as a conclusion to this paper.
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