Catalyst recovery

Details Catalyst recovery Catalyst recovery

B - Operations, Transporting

01

J

B01J 38/68 (2006.01) C07C 51/00 (2006.01) C07C 51/42 (2006.01)

Patent

CA 2264611

Heavy metal catalyst-containing residue obtained from plant for the production of aromatic polycarboxylic acid is processed by dissolving substantially the whole of the residue in an aqueous medium and the catalyst metals are precipitated from the solution, preferably using carbonate and/or bicarbonate ions.

Un résidu contenant un catalyseur de métaux lourds obtenu par une usine de production d'acide polycarboxylique aromatique est traité, de préférence, à l'aide d'ions de carbonate/bicarbonate. Ce procédé assure la dissolution de sensiblement la totalité du résidu dans un milieu aqueux, et la précipitation des catalyseurs de métaux à partir de la solution.

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