Process for recovery of propylene and LPG from FCC fuel gas using stripped main column overhead distillate as absorber oil

Process for recovery of propylene and LPG from FCC fuel gas using stripped main column overhead distillate as absorber oil

A process is disclosed for enhanced recovery of propylene and LPG from the fuel gas produced in Fluid catalytic cracking unit by contacting a heavier hydrocarbon feed with FCC catalyst. In the conventional process, the product mixture from FCC main column overhead comprising naphtha, LPG and fuel ga...

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Hauptverfasser: DAS ASIT KUMAR, ARORA SHAILENDRA, YADAV MANOJ, MANDAL SUKUMAR, JAGUSTE SHUBHANGI, TULSI GOBIND, GUPTA YOGESH, MAKHANIA MINAZ
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator DAS ASIT KUMAR
ARORA SHAILENDRA
YADAV MANOJ
MANDAL SUKUMAR
JAGUSTE SHUBHANGI
TULSI GOBIND
GUPTA YOGESH
MAKHANIA MINAZ
description A process is disclosed for enhanced recovery of propylene and LPG from the fuel gas produced in Fluid catalytic cracking unit by contacting a heavier hydrocarbon feed with FCC catalyst. In the conventional process, the product mixture from FCC main column overhead comprising naphtha, LPG and fuel gas, are first condensed and gravity separated to produce unstabilized naphtha, which is subsequently used in the absorber to absorb propylene and LPG from fuel gas. However, the recovery of propylene beyond 97 wt % is difficult in this process since unstabilized naphtha already contains propylene of 5 mol % or above. In the present invention, C4 and lighter components from unstabilized naphtha are first stripped off in a separate column to obtain a liquid fraction almost free from propylene (
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Process for recovery of propylene and LPG from FCC fuel gas using stripped main column overhead distillate as absorber oil
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