Patent · US Active

Process for producing high purity meta-xylene, comprising simulated moving bed adsorption and crystallization

US7928276B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

IFP ENERGIES NOUVELLES · FR

Inventors

Gerard Hotier · Rueil-Malmaison, FR
Philibert Leflaive · Rueil-Malmaison, FR
Luc Wolff · Chaponnay, FR

Key dates

Filing date	Apr 25, 2008
Grant date	Apr 19, 2011
Priority date	—
Expiry date	Apr 24, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C15/08
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention concerns a process for producing high purity meta-xylene, comprising a step for separation by simulated moving bed adsorption starting from an aromatic C8 feed delivering a fraction which is rich in meta-xylene and a fraction which is depleted in meta-xylene, and a step for crystallization of the meta-xylene rich fraction. The purity of the meta-xylene produced is at least 99.5%.

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