Process for recycling of gases during the manufacturing of...

Details Process for recycling of gases during the manufacturing of... Process for recycling of gases during the manufacturing of...

B - Operations, Transporting

01

D

B01D 5/00 (2006.01)

Patent

CA 2214542

Provided herein is a method of recovering an aprotic solvent in a process for manufacturing lithium ion batteries comprising: (a) releasing an aprotic carrier solvent from a slurry coated onto a metal substrate wherein said slurry comprises the solvent and material used to fabricate electrodes for use in lithium ion batteries; (b) mixing the released solvent with a gas stream comprising a gas and water vapor; and (c) condensing the released solvent. Specific aprotic solvents include akyl substituted pyrrolidones such as N-methyl pyrrolidone.

Méthode pour récupérer un solvant aprotique dans un procédé de fabrication de piles à ion lithium, consistant à : a) libérer un solvant-véhicule aprotique à partir d'une suspension épaisse appliquée sur un substrat métallique, celle-ci étant constituée du solvant et d'un matériau qui sert à fabriquer les électrodes pour les piles à ion lithium; b) mélanger le solvant libéré avec un flux gazeux de vapeur d'eau et d'un gaz; c) condenser le solvant libéré. Parmi les solvants aprotiques spécifiques, on compte les pyrrolidones avec substitution alkylique, notamment la N-méthylpyrrolidone.

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