Page 60 - Fluid Catalytic Cracking Handbook
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SOLVENT WASH
OFF-GAS
iNERTS
CONTACT ^ O
SOLVENT RECYCLE
>
1
J "> AIR
*-
\
1 § X_ J
X^
TREATED PRODUCT AIR 4, f CATALYST
] CAUSTIC OUT RSNa + NaOH
J Figure 1-16. Caustic sweetening and extraction process, (Adapted from Merichem Company, Houston, Texas),
SECOND STAGE CONTACTOR
1
•I
HYDROCARBON STREAM^ w/o H 2 S, CONTAINS R-SH CAUSTIC IN ( CAUSTIC IN (BATCH)
HYDROCARBON STREAM CAUSTIC OUT (BATCH)
