Continuous distillative separation of liquid mixtures which contain (meth) acrylic acid as the main component

摘要

Liquid mixtures which contain (meth)acrylic acid as the main component are continuously separated in a distillation apparatus which comprises a still, a condenser and a connection between still and condenser and to which the liquid mixture to be separated is continuously fed, by a process in which the energy required for evaporation of the liquid mixture is supplied to the distillation apparatus by a procedure in which a part of the liquid content of the still is continuously removed, superheated and recycled to the still.