EP 0993500 A1 20000419 - SPLIT-FEED TWO-STAGE PARALLEL AROMATIZATION FOR MAXIMUM PARA-XYLENE YIELD
Title (en)
SPLIT-FEED TWO-STAGE PARALLEL AROMATIZATION FOR MAXIMUM PARA-XYLENE YIELD
Title (de)
ZWEISTUFIGE AROMATISATION FÜR MAXIMALE PARA-XYLEN-AUSBEUTE MIT GETEILTER EINSPEISUNG
Title (fr)
AROMATISATION A CHARGE PARTAGEE, EN DEUX ETAPES POUR RENDEMENT MAXIMAL EN PARAXYLENE
Publication
Application
Priority
US 9709890 W 19970616
Abstract (en)
[origin: WO9858041A1] A full boiling hydrocarbon feed is reformed to enhance para-xylene and benzene yields. First, the hydrocarbon feed is separated into a C5- cut, a C6-C7 cut, and a C8+ cut. The C6-C7 cut has less than 5 lv. % of C8+ hydrocarbon, and the C8+ cut has less than 10 lv. % of C7- hydrocarbon. The C6-C7 cut is subjected to catalytic aromatization at elevated temperatures in a first reformer in the presence of hydrogen and using a non-acidic catalyst comprising at least one Group VIII metal and a non-acidic zeolite support to produce a first reformate stream; and the C8+ cut is subjected to catalytic aromatization at elevated temperatures in a second reformer in the presence of hydrogen and using an acidic catalyst comprising at least one Group VIII metal and a metallic oxide support to produce a second reformate stream. Less than 20 wt.% of the total amount of C8 aromatics produced in the first and second reformer is ethylbenzene, and more than 20 wt.% of the total amount of xylenes produced in the first and second reformer are para-xylenes.
IPC 1-7
IPC 8 full level
C10G 35/09 (2006.01); C10G 35/095 (2006.01); C10G 59/06 (2006.01)
CPC (source: EP)
C10G 35/095 (2013.01); C10G 59/06 (2013.01)
Citation (search report)
See references of WO 9858041A1
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
WO 9858041 A1 19981223; CA 2287938 A1 19981223; DE 69715682 D1 20021024; DE 69715682 T2 20030528; EP 0993500 A1 20000419; EP 0993500 B1 20020918; JP 2002504180 A 20020205
DOCDB simple family (application)
US 9709890 W 19970616; CA 2287938 A 19970616; DE 69715682 T 19970616; EP 97929844 A 19970616; JP 50433599 A 19970616