EXTRACTING AROMATIC HYDROCARBONS FROM MIXTURES CONTAINING SAME

摘要

CASE 1092 EXTRACTING AROMATIC HYDROCARBONS FROM MIXTURES CONTAINING SAME In a method for the removal of aromatic hydrocarbons from mixtures containing them, by exploiting liquid-liquid extraction and extractive distillation stages, the improvement consisting in that an isoenthalpic expansion of the rectification column bottom solvent stream is effected: heat useup is reduced and a higher quantity of water admixed to the selective solvent can be used.