Process for the recovery of waste sulphuric acid

Details Process for the recovery of waste sulphuric acid Process for the recovery of waste sulphuric acid

C - Chemistry, Metallurgy

01

B

C01B 17/88 (2006.01) C01B 17/90 (2006.01) C01G 49/14 (2006.01)

Patent

CA 2185762

A process for concentrating a waste sulphuric acid stream containing metal sulphates including iron sulphate comprises the steps of subjecting the stream to an ion exchange operation to produce an acid-rich stream and a salt-rich stream and, concentrating the acid- rich stream to produce a concentrated sulphuric acid stream.

Méthode pour concentrer un effluent résiduel d'acide sulfurique, contenant des sulfates de métaux, y compris du sulfate de fer. La méthode comprend les étapes suivantes : traiter l'effluent par échange ionique pour obtenir un effluent riche en acide et un effluent riche en sel; concentrer l'effluent riche en acide pour obtenir un effluent concentré en acide sulfurique.

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