Patent ID: 6635148
Filing Date: 2003-10-21
Classification: B01D,Y10S

Abstract:
An apparatus for refining an easily polymerizable matter-containing substance comprising:a distillation column, and a heat exchanger disposed directly in a lower part inside the distillation column, the heat exchanger comprising a cylindrical vessel provided on the lateral side thereof with an inlet and an outlet for a heating medium and tightly sealed in the upper and lower part thereof, a plurality of heat transfer tubes disposed between the upper and lower sides of the cylindrical vessel and provided respectively therein with a vertically piercing hole, a vapor guide disposed above the cylindrical vessel and having a vapor vent positioned approximately in the central part of the distillation column, a loose lid disposed on or above the vapor vent, and a down-take disposed in such a manner outside the heating tubes as to join the upper and lower parts of the cylindrical vessel, wherein the heat exchanger serves as a re-boiler.