TH9808A - Vacuum distillation process - Google Patents

Abstract

The vacuum distillation process involves introducing a feed containing vapor and liquid into distillation column 1, which operates at a pressure below atmospheric pressure. The vapor is allowed to rise within distillation column 1, the liquid is allowed to settle into the lower section 2 of distillation bar 1, and the liquid is transferred from the lower section 2 of distillation column 1 through transfer trough 5 to an external collection vessel 9, where the liquid vapor is removed, the liquid vapor is cooled, and a portion of the cooled liquid vapor is introduced through trough 17 into the liquid flowing through transfer trough 5.

Claims (2)

1. The vacuum distillation process, which involves introducing a vapor-liquid feed into a distillation column (1) operating at a pressure below atmospheric pressure, allowing the vapor to rise within the distillation column (1), allowing the liquid to settle into the lower (2) section of the distillation column (1), and removing the liquid from the lower (2) section of the distillation column (1), is characterized by the addition of the transfer of the liquid from the lower (2) section through a transfer pipe (5) to an external collection vessel (9), removing the liquid from the collection vessel (9), cooling (15) the liquid removed from the collection vessel (9), and introducing a portion of the cooled liquid (17) into the liquid flowing through the transfer pipe (5). 2. The vacuum distillation process as claimed in claim 1, whereby the volume of the cooled liquid (17) introduced into the transfer tube (5) shall be between 30 and 70% by volume of the cooled liquid.