Process for the disproportionation and transalkylation of toluene and heavy aromatics
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United States of America Patent
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Sep 19, 2006
Grant Date -
Sep 23, 2004
app pub date -
Mar 19, 2003
filing date -
Mar 19, 2003
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Abstract
A process for the disproportionation and transalkylation of toluene and the heavy aromatics comprises: subjecting a first stream of toluene, and a stream enriched in aromatics of nine carbon atoms to toluene disproportionation and transalkylation reactions in the presence of hydrogen in a first reaction zone to produce a first product mixture comprising benzene, aromatics of eight carbon atoms and heavy aromatics of ten and more carbon atoms; subjecting a second stream of toluene, and a stream enriched in heavy aromatics of ten and more carbon atoms to transalkylation reaction in the presence of hydrogen in a second reaction zone to produce a second product mixture comprising benzene, aromatics of eight carbon atoms and aromatics of nine carbon atoms; and isolating and recovering benzene and aromatics of eight carbon atoms from the first and second product mixtures.
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