Patent ID: 6676808
Filing Date: 2004-01-13
Classification: B01D,C07C,Y10S

Abstract:
A method for starting up a distilling column to handle an easily polymerizing compound-containing solution, wherein a polymerization inhibitor is supplied to a bottom liquid of the distilling column having a temperature of not higher than 80Â° C. at the start of an operation of the distilling column, wherein an inert gas and/or a molecular oxygen-containing gas is supplied to the interior of the column prior to the start of a temperature elevation of the distilling column till the molecular oxygen-containing gas concentration in the column reaches a level in the range of 0.1-9 vol. % and then, during the course of the temperature elevation, the molecular oxygen-containing gas is supplied till an easily polymerizing compound gas composition in the column exceeds the concentration in upper explosion limits.