METHOD OF CONTINUOUS RECTIFICATION OF SOLUTIONS Russian patent published in 2002 - IPC

FIELD: mass-exchange processes of solution separation in rectification; applicable in chemical, petrochemical, pharmacological, food and other industries. SUBSTANCE: method includes heating of homogeneous liquid raw material in heat exchanger up to boiling temperature and its supply to section of rectification column feed, withdrawal of practically pure high-boiling component from column bottom to accumulator of still liquor; supply of vapors enriched in low-boiling component from column upper zone to partial condenser with vapor partial condensation and return of said condensate to column upper zone; condensation of remaining part of vapors in condenser-cooler and withdrawal of condensate to accumulator of distillate. In this case, vapors coming from column upper zone are divided into two parts, one of which is directed to partial condenser, while the other, for mixing with homogeneous liquid raw material before its supply to heat exchanger to provide for increase of concentration of low-boiling component in section of feed of rectification column. EFFECT: reduced consumption of vapors formed in rectification due to reduced supply of reflux back to column. 1 dwg, 2 tbl