Patent · US Expired

Process for co-production and separation of ethylbenzene and paraxylene

US6177604A · kind A · utility

1Cited by

4References

10Claims

0Family size

Assignee

INSTITUT FRANCAIS DU PETROLE · FR

Inventors

Gerard Hotier · Rueil-Malmaison, FR
Fabio Alario · Ancenis, FR
Alain Methivier · Rueil-Malmaison, FR

Key dates

Filing date	Dec 23, 1998
Grant date	Jan 23, 2001
Priority date	—
Expiry date	Dec 23, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2529/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Paraxylene and ethylbenzene are produced from an aromatic hydrocarbon feedstock by using adsorption zones in a simulated fluid bed. The feedstock is first passed into a first adsorption zone to produce a first paraxylene-rich fraction and a second ethylbenzene-rich fraction. The second fraction is then passed into a second adsorption zone to produce a third fraction containing essentially pure ethylbenzene and a fourth fraction containing a majority of orthoxylene and metaxylene. The fourth stream is then passed into an isomerization zone to produce an isomerate which is then recycled back to the first adsorption zone.

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