Method for processing waste pyrrolidone and n-vinyl pyrrolidone.

摘要

Process for reprocessing waste obtaining pyrrolidone, N-vinylpyrrolidone or pyrrolidone and N-vinylpyrrolidone, having residues the composition of a bottom product obtained by reaction of gamma-butyrolactone and ammonia to give pyrrolidone and / or by reaction of pyrrolidone and ethyne to give N-vinylpyrrolidone, respectively after purification by distillation, characterized in that the waste collected obtaining pyrrolidone and N-vinylpyrrolidone undergo thermolysis which is carried out at a residence time of 1 to 10 hours, based on the residues used.