Economic Potential of Bio-Ethylene Production via Oxidative Coupling of Methane in Biogas from Anaerobic Digestion of Industrial Effluents

نویسندگان

چکیده

Brazil’s large biofuels industry generates significant amounts of effluents, e.g., vinasse from bioethanol, that can effectively be used as substrate for production biogas via Anaerobic Digestion (AD). The Oxidative Coupling Methane (OCM) is the heterogeneous catalytic oxidation methane into ethylene, which a main building block chemical industry. This work investigates potential and competitiveness bio-ethylene OCM using produced by biological anaerobiosis feedstock. proposed process add incentive to treat AD replace fossil thus potentially reducing emissions Greenhouse Gases (GHG). A model developed in Aspen Plus v10 software design an economic Biogas-based (Bio-OCM) consumes oxygen educts produces ethane, light off-gases products. Operating conditions reaction section are optimized product yield 16.12% reached applying two adiabatic Packed Bed Reactors (PBRs) series. For downstream CO2 removal section, standalone amine-absorption simulated compared hybrid membrane-absorption on basis. distillation different configurations with without Recycle Split Vapor (RSV) compared. cost Bio-OCM plant installed Brazil estimated considering wide range prices educts, utility, side products, equipment within Monte Carlo simulation. resulting average 0.53 ±0.73 USD.kgC2H4-1. highly sensitive sales price assigned off-gas side-product stream containing mostly un-reacted methane. close Brazilian pipeline natural gas has been assumed based characteristics this stream. simulation shows below or equal 0.70 USD.kgC2H4-1 achieved 55.2% confidence, whereas market values ethylene typically lie between 0.70USD.kgC2H4-1–1.50USD.kgC2H4-1. Technical challenges industrial implementation identified relevant opportunities further research improvement discussed.

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ژورنال

عنوان ژورنال: Processes

سال: 2021

ISSN: ['2227-9717']

DOI: https://doi.org/10.3390/pr9091613