Thermal separation between at least one gaseous and liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column whose surface is sprayed with polymerization inhibitor

摘要

Thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column whose separating internals are mass transfer trays, in which the liquid stream comprises polymerization-inhibitor and used for spraying the surface of the separating column. Thermal separating process between at least one gaseous stream ascending in a separating column containing a sequence of mass transfer trays and a liquid stream descending in the separating column and comprising dissolved polymerization inhibitor, at least one of the streams comprising (meth)acrylic monomers, and the inner surface of the separating column being sprayed with the liquid stream descending in the separating column and comprising dissolved polymerization inhibitor, and the separating column having internals of whose surface at least parts are in the shadow region of the sprayed descending liquid stream, where parts of the surface of the internals which are in the shadow of the sprayed descending liquid stream are removed from the shadow region by being covered. An independent claim is also included for a separating column containing a sequence of mass transfer trays and installed as support elements, covered double-T supports and/or covered U-shaped supports.