EP 0188898 B1 19900919 - CASCADE DEWAXING PROCESS
Title (en)
CASCADE DEWAXING PROCESS
Publication
Application
Priority
- US 68500084 A 19841221
- US 68500184 A 19841221
- US 68508984 A 19841221
- US 73881885 A 19850529
Abstract (en)
[origin: EP0188898A2] Hydrocarbon feedstocks are dewaxed in a cascade process by contacting a waxy feedstock with a large pore crystalline zeolite catalyst and then with a medium pore crystalline zeolite catalyst. Preferably both contactings are performed in the presence of added hydrogen, each zeolite being associated with a hydrogenation/dehydrogenation component: the first contacting may function as a hydroisomerisation step. In certain applications as preferred large pore zeolite is zeolite beta. In certain applications a preferred medium pore zeolite is ZSM-11. Some degree of interstage separation can be adopted.
IPC 1-7
IPC 8 full level
C10G 45/64 (2006.01); C10G 65/04 (2006.01)
CPC (source: EP)
C10G 45/64 (2013.01); C10G 65/043 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0188898 A2 19860730; EP 0188898 A3 19880608; EP 0188898 B1 19900919; DE 3579802 D1 19901025
DOCDB simple family (application)
EP 85309273 A 19851219; DE 3579802 T 19851219