Process for recovering elemental sulphur

摘要

Elemental sulphur can be recovered from liquid reaction mixtures formed by reaction of mercapto compounds with thionyl chloride in an organic solvent by, after the distillative separation of at least part of the distillable fractions leaving behind a likewise liquid distillation residue, cooling this distillation residue while maintaining its liquid state with the exception of the sulphur crystallising out and mechanically separating off the sulphur which has crystallised out.