EP 0171460 B1 19880817 - RESIDUAL OIL CRACKING PROCESS USING DRY GAS AS LIFT GAS INITIALLY IN RISER REACTOR
Title (en)
RESIDUAL OIL CRACKING PROCESS USING DRY GAS AS LIFT GAS INITIALLY IN RISER REACTOR
Publication
Application
Priority
US 62019684 A 19840613
Abstract (en)
[origin: EP0171460A1] Dry gas (containing little C3+ and almost no C5+) is substituted for wet gas (generally containing C3+ and C5+) and used as the lift gas for transporting catalyst through a hydrocarbon conversion riser e.g. metal removal system, fluid catalytic cracker, and RCC<sm> heavy oil cracking process. Preferably the hydrocarbon feed contact the catalyst-lift gas mixture after some period of acceleration and mixing and passivation of contaminants on the catalyst surface. Advantages include lower gasing and lower coke-make as well as better product selectivity. Preferred catalyst-lift gas contact times are from about 0.01 to 2, more preferably 0.05 to 1.5, and most preferably 0.15 to 1 second. Preferred lift gas hydrogen contents are at least about 10, more preferably 15 and most preferably 20 mol precent hydrogen.
IPC 1-7
IPC 8 full level
C10G 11/02 (2006.01); B01J 23/00 (2006.01); B01J 29/00 (2006.01); C10G 11/00 (2006.01); C10G 11/05 (2006.01); C10G 11/18 (2006.01); C10G 47/30 (2006.01)
CPC (source: EP)
C10G 11/18 (2013.01); C10G 47/30 (2013.01)
Designated contracting state (EPC)
AT BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0171460 A1 19860219; EP 0171460 B1 19880817; AT E36554 T1 19880915; AU 4311185 A 19851219; AU 588528 B2 19890921; CA 1265464 A 19900206; DE 3473473 D1 19880922; IN 162877 B 19880716; JP H0226663 B2 19900612; JP S614785 A 19860110; MX 165471 B 19921112; RU 2091433 C1 19970927
DOCDB simple family (application)
EP 84112717 A 19841217; AT 84112717 T 19841217; AU 4311185 A 19850529; CA 466631 A 19841030; DE 3473473 T 19841217; IN 827DE1984 A 19841025; JP 3364985 A 19850221; MX 20556285 A 19850606; SU 3911820 A 19850612