method for fractional condensation of an acrylic acid or methacrylic acid containing hot gas mixture with a high proportion of not kondensierbarer components

摘要

A process for the fractional condensation of a gas mixture which, in addition to acrylic acid or methacrylic acid, also contains at least one further condensable component and additionally a high proportion of one or more noncondensable components, wherein the gas mixture is passed through a column having separatory internals and the condensable components are condensed by cooling.