Patent ID: 6372944
Filing Date: 2002-04-16
Classification: B01D,C07C,Y10S

Abstract:
In the purification of a polymerizable compound, the improvement in reducing the buildup of polymers or one or more polymerized compounds which comprises:a) introducing into a distillation column a fluid, at least one component of which is a polymerizable compound; b) passing the fluid over a liquid withdrawing tray disposed within the distillation column and having a concave liquid receiving plate with a liquid withdrawing tube communicating between the liquid receiving plate and the exterior of the distillation column, the liquid receiving plate having an open end that defines an upper outer periphery and a lower lateral surface opposed to the open end, the cross sectional area of the liquid withdrawing tray being less than the interior cross sectional area of the distillation column and disposed transverse to the longitudinal axis of the distillation column; c) removing a portion of the fluid to the exterior of the distillation column by the liquid withdrawing tube; and d) permitting that portion of the fluid not withdrawn by the liquid withdrawing tube to the exterior of the distillation column to overflow the liquid receiving tray and coat the exterior surfaces of the liquid receiving tray and the liquid withdrawing tube.