Method of cleaning debris

Details Method of cleaning debris Method of cleaning debris

B - Operations, Transporting

08

B

53/346, 23/364

B08B 3/08 (2006.01) B09C 1/02 (2006.01)

Patent

CA 2015089

Debris, such as soil from a coking plant, is cleaned by simultaneously separating heavy metals and oils from the debris. The debris is primarily an inert substance. Acetic anhydride is employed, which is mixed with the debris, so as to remove any moisture from it. After the acetic anhydride has been added, aqueous acetic acid is distilled off from the mixture. The remaining distillant is then filtered to remove the heavy metals and oils from the debris, leaving clean debris and separated heavy metals and oils.

Les débris, comme le sol provenant d'une usine de cokéfaction, sont nettoyés en séparant simultanément les métaux lourds et les huiles des débris. Ceux-ci sont principalement des substances inertes. On utilise de l'anhydride acétique, qui est mélangé avec les débris, de façon à en éliminer l'humidité. Après l'addition d'anhydride acétique, on distille l'anhydride acétique aqueux pour l'extraire du mélange. Le distillat restant est ensuite filtré pour séparer les métaux lourds et les huiles des débris, ce qui laisse des débris propres, ainsi que les métaux et les huiles séparés.

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