PROCEDEU PENTRU OBTINEREA DE P-XILEN PUR

摘要

P-xylene is separated from a liquid hydrocarbon mixture of p-xylene and at least one other isomeric xylene by crystallizing p-xylene from the mixture and subsequently separating p-xylene crystals in a first and in a subsequent second separator which furnishes a p-xylene end product having a purity of more than 98 percent by weight and from which the liquid effluent containing p-xylene is partially recirculated into the feed stream of the second separator and is partially recirculated through an additional crystallizer and separator so that the resulting crystals are admixed with feed for the second separator and the liquid effluent is admixed with the feed for the first crystallizer.