Method of purifying unsaturated hydrocarbons by extractive distillation with side stream removal and solvent mix
Abstract
Abstract IMPROVED CONTROL AND GREATER CAPACITY OF AN EXTRACTIVE DISTILLATION TOWER CAN BE OBTAINED BY RETURNING THE REFLUX TO THE TOWER WIGHDRAWING ALL OR A PORTION OF THE EXTERNAL REFLUX FROM THE TOWER AND PREMIXING F THE SOLVENT FEED AND EXTERNAL REFLUX PRIOR TO INTRODUCING THE SOLVENT TO THE TOWER. BY PROCEEDING IN THIS MANNER BETTER SOLUBILIZATION OF THE EXTERNAL REFLUX IN THE SOLVENT FEED IS OBTAINED THUS INCREASING THE AMOUNT OF REFLUX THAT CAN BE HANDLED BY THE SOLVENT WITH FLOODING. THE EXTERNAL PREMIXING ALSO ALLOWS ADJUSTMENT OF THE SOLVENT FEED TEMPERATURE TO COMPENSATE FOR THE VARIATIONS IN ENDOTHERMIC HEAT OF SOLUBLITY FROM VARIATIONS IN THE HYDROCARBON COMPOSITION IN THE TOWER.
Inventors
- 👤 Terry D Funkhouser
Bibliographic Details
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