Optimisation of C3= recovery by lowering purity setting for propylene product to increase the capacity of polypropylene plant at Dung Quat Refinery
Abstract
Applying data analysis and process modelling, the study proposed a good way to maximise the C3= recovery in LPG produced from the RFCC unit. Via a solution of lowering the purity setting for the propylene product in the Propylene Recovery Unit, more propylene has been recovered which enables the PP Plant to process at a higher capacity (3% over the designed capacity). The solution, which has been implemented since August 2018, gives Dung Quat Refinery an estimated economic benefit of about USD 2.5 mil/year.
References
Technip, JGC, Dung Quat refinery project, operating manual of propylene recovery Unit (Unit 021), 2007.
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