Process and apparatus for the continuous flow,in-line fractionation and exchange of volatile solvents

Abstract

Abstract A METHOD FOR SEPARATING THE INDIVIDUAL SOLVENT COMPONENTS FROM A MIXTURE OF MISCIBLE SOLVENTS PRESENT TOGETHER IN A SINGLE SOLVENT SYSTEM. THIS METHOD ALSO PROVIDES FOR THE CONTINUOUS FLOW, IN-LINE FRACTIONATION AND EXCHANGE OF MISCIBLE LIQUIDS OF DIFFERING VOLATILIZATION CHARACTERISTICS. A SOLVENT MIXTURE IS INTRODUCED INTO A HEATED, INCLINED, PERFORATED CONDUIT. AS THE SOLVENT MIXTURE DESCENDS THE HEATED CONDIUT, A COUNTERCURRENT STREAM OF HEATED INERT GAS, SATURATED WITH VAPORS OF THE SAME SOLVENT COMPONENT TO BE RETAINED IN THE CONDUIT, IS PASSED OVER THE PERFORATIONS. PREFERENTIAL EVAPORATION OF THE MORE VOLATILE SOLVENT COMPONENTS OCCURS, RESULTING IN NEAR COMPLETE REMOVAL OF THE COMPONENTS BY THE TIME THE SOLVENT MIXTURE EXITS AT THE BOTTOM OF THE CONDIUT WITH THE LESS VOLATILE SOLVENT COMPONENT REMAINING WITHIN THE CONDUIT FOR SUBSEQUENT COLLECTION. D R A W I N G

Inventors

• 👤 Harry H Malvin
• 👤 Marion J Stansell

Bibliographic Details