Invention Application
WO2011001445A3 AN IMPROVED PROCESS FOR RECOVERY OF PROPYLENE AND LPG FROM FCC FUEL GAS USING STRIPPED MAIN COLUMN OVERHEAD DISTILLATE AS ABSORBER OIL
审中-公开
催化裂化汽油回收丙烯和液化石油气的改进方法，主要使用主塔塔底馏出液作为吸收油
- Patent Title: AN IMPROVED PROCESS FOR RECOVERY OF PROPYLENE AND LPG FROM FCC FUEL GAS USING STRIPPED MAIN COLUMN OVERHEAD DISTILLATE AS ABSORBER OIL
- Patent Title (中): 催化裂化汽油回收丙烯和液化石油气的改进方法，主要使用主塔塔底馏出液作为吸收油
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Application No.: PCT/IN2010000386Application Date: 2010-06-09
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Publication No.: WO2011001445A3Publication Date: 2011-03-31
- Inventor: YADAV MANOJ , MANDAL SUKUMAR , DAS ASIT KUMAR , GUPTA YOGESH , MAKHANIA MINAZ , TULSI GOBIND , ARORA SHAILENDRA , JAGUSTE SHUBHANGI
- Applicant: RELIANCE IND LTD , YADAV MANOJ , MANDAL SUKUMAR , DAS ASIT KUMAR , GUPTA YOGESH , MAKHANIA MINAZ , TULSI GOBIND , ARORA SHAILENDRA , JAGUSTE SHUBHANGI
- Assignee: RELIANCE IND LTD,YADAV MANOJ,MANDAL SUKUMAR,DAS ASIT KUMAR,GUPTA YOGESH,MAKHANIA MINAZ,TULSI GOBIND,ARORA SHAILENDRA,JAGUSTE SHUBHANGI
- Current Assignee: RELIANCE IND LTD,YADAV MANOJ,MANDAL SUKUMAR,DAS ASIT KUMAR,GUPTA YOGESH,MAKHANIA MINAZ,TULSI GOBIND,ARORA SHAILENDRA,JAGUSTE SHUBHANGI
- Priority: IN1570MU2009 2009-07-02
- Main IPC: C10G53/08
- IPC: C10G53/08
Abstract:
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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