B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/68 (2006.01) B01J 23/96 (2006.01) B01J 38/48 (2006.01) C07C 29/10 (2006.01) C07C 41/02 (2006.01) C07C 213/04 (2006.01) C07D 301/10 (2006.01) C22B 7/00 (2006.01)
Patent
CA 2634332
A method for reusing rhenium from a donor spent epoxidation catalyst, the method comprising: providing a donor comprising spent epoxidation catalyst comprising rhenium, the donor having a cumulative alkylene oxide production of 0.16 kT/m3 of the spent epoxidation catalyst or more; contacting the donor with an aqueous liquid to produce rhenium-depleted donor and aqueous extract comprising extracted rhenium; separating the aqueous extract and the rhenium- depleted donor; and, using the extracted rhenium as a source of rhenium in a subsequent process.
La présente invention concerne un procédé de réutilisation de rhénium provenant d~un catalyseur d~époxydation usé : il s~agit de disposer d~un donneur ayant un catalyseur d~époxydation usé comprenant du rhénium, le donneur ayant une production d~oxyde d~alkylène cumulatif de 0,16 kT/m3 du catalyseur d~époxydation usé ou plus, de contacter le donneur avec un liquide aqueux pour produire un donneur à déficience de rhénium et un extrait aqueux comprenant le rhénium extrait, de séparer l~extrait aqueux et le donneur à déficience de rhénium puis d~utiliser le rhénium extrait comme source de rhénium lors d~un processus ultérieur.
Fragnito Richard Anthony
Matusz Marek
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Shell Internationale Research Maatschappij B.v.
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