Patent · US Active

Process and device for the inverted separation of aromatics

US10669493B2 · kind B2 · utility

0Cited by
1References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 3, 2019
Grant dateJun 2, 2020
Priority date—
Expiry dateMay 3, 2039

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10G2400/30
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

The present invention relates to a process and to a device for the separation of a feedstock comprising benzene, toluene and C8+ compounds, in which: a toluene column (C10) is fed directly with a C7+ cut resulting from the bottom of a stabilization column (C11) positioned downstream of a transalkylation unit (P4); a C7− cut is withdrawn at the top of the toluene column (C10) and a C8+ cut is withdrawn at the bottom; a benzene column (C9) is fed with the C7− cut resulting from the toluene column (C10); an essentially aromatic cut resulting from an aromatics extraction unit (P1) is injected into the toluene column (C10) separately above the feeding of the C7+ cut or into the benzene column (C9).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.