Extractive distillation recovery process

Abstract From the Canadian patent

Abstract of the Disclosure A process for recovering steam-volatile and/or watersoluble organic and/or inorganic products from meltable residues or suspensions containing such products which comprises feeding the molten residue or suspension into a trickle plate column at a temperature of less than 250°C, extracting the said molten residue or suspension with steam and/or water condensate, condensing the mixture issuing at the top of the column, drawing off the remaining extracted melt or suspension and the descending aqueous phase at the bottom of the column and subsequent separation.