Appendix 1: Commercially Available FCC Catalysts and Additives
Note: All catalysts are microspheres with densities from 0.70 to 0.90 g/cc. Matrix
binders are silica or aluminum sols or silica-alumina. Clays and other aluminas are
added.
Feedstocks
Products
GO
Gas oils
MDG
Minimum dry gas
R
Resids
MLPG
Maximum LPG
HN
High nitrogen
MG
Maximum gasoline
HNR
High-nickel resid
MLCO
Maximum LCO
HR
Heavy resid
MBC
Maximum bottom cracking
HT GO
Hydrotreated GO
MO
Maximum octane
A
All
MC
Minimum coke
MLY
Maximum liquid yields
MOB
Maximum octane barrels
MIO
Maximum iso-olefins
MC3=
Maximum propylene
MC4=
Maximum butylenes
Flue gas
Regenerator
Reactor /
stripper
FCC
products
SHELL
INDMAX
MILOS
products
MILOS
cyclone
MG
Stripper
External Regenerated
Catalyst Hopper
Turbulent
Regenerator
Bed
Reaction Riser
(Short Contact Time)
Direct-Coupled
Cyclones
Micro-Jet Feed
Injection Nozzles
Cyclone
Containment
Vessel (CCV)
MILOS riser
Air
FCC riser
Gasoline
VGO
Fig. 33 Shell Milos and Indmax (Indian Oil) processes
Fluid Catalytic Cracking (FCC) in Petroleum Refining
307