PROCESS FOR THE PRODUCTION OF A CONCENTRATE OF AROMATICS SUITABLE FOR USE AS A BLENDING COMPONENT FOR PETROL

摘要

In this process, feedstock hydrocarbon mixtures having a boiling range of between 40 and 170 DEG C are subjected without prior separation into individual fractions to an extractive distillation using N-substituted morpholines whose substituents contain no more than seven C atoms as selective solvent. In this process, virtually all of the low-boiling non-aromatics having a boiling range of up to approximately 105 DEG C and the vast majority of the higher-boiling aromatics having a boiling range of between approximately 105 and 160 DEG C are extracted as a refined product, while the aromatics which are used in total or in part as a blending component are to be found in the extract from the extractive distillation. IMAGE