Separation Processes for the Recovery of Pure Aromatics

摘要

Aromatics recovery is a large and growing industry. Higher growth rates are forecast for p-xylene and benzene than for the petrochemical industry in general. Process configurations are changing due to a different product mix and to the application of new improved conversion processes. Liquid-liquid extraction, the preferred separation process for four decades, is gradually being replaced by extractive distillation which has both investment and operational cost advantages.