| abstract |
A method and apparatus for distilling readily polymerizable liquid such as readily polymerizable monomers without causing the formation of an undesirable polymerization product is disclosed. This distillation is effected by (a) vaporizing the polymerizable liquid from a liquid phase containing the same in an evaporator by externally heating the liquid phase; (b) converting the vapor of the polymerizable liquid to a superheated state by externally heating, and introducing the vapor of the polymerizable liquid to the inlet of a condenser, while the vapor is maintained at the superheated state; and, then, (c) condensing the vapor in the condenser, while a portion of the condensed fraction is circulated to the inlet of the condenser, whereby the condensation surface thereof is wetted. |