The synthesis of methanol and dimethyl ether (DME) through the hydrogenation of CO2-enriched syngas derived from biomass gasification represents a promising approach to mitigate global warming and to reduce dependence on non-renewable crude oil sources. This study aims to comprehensive assess one-step DME synthesis, focusing on key performance indicators such as molar feed ratios, carbon oxides (COx ) conversions, and product yield. Using Aspen Plus simulation software, this research delves into the diverse compositional spectrum of CO2-enriched syngas feedstocks generated from biomass gasification. The evaluation process spans a broad parameter space, considering factors like reaction temperature (ranging from 200°C to 300°C), reaction pressure (varying between 30 and 80 bar), and molar feed ratios of H2/CO, H2/CO2, CO/CO2. An H2/COx=3 ratio strikes a delicate balance between large H2 partial pressure, boosting the reaction (thermodynamically and kinetically), and reduced H2 excess. The thermodynamic and kinetic analysis reveal a negative CO2 conversion. Within the investigated range of operating conditions, 50 bar pressure and 220 °C temperature provided the highest yields and CO conversion.
Design and Simulation of Methanol and Dimethyl Ether (DME) Production from Biomass-derived Syngas / Scognamiglio, Stefano; Ciccone, Biagio; Ruoppolo, Giovanna; Landi, Gianluca. - In: CHEMICAL ENGINEERING TRANSACTIONS. - ISSN 2283-9216. - ELETTRONICO. - 109:(2024), pp. 277-282. [10.3303/CET24109047]
Design and Simulation of Methanol and Dimethyl Ether (DME) Production from Biomass-derived Syngas
Scognamiglio Stefano;Ciccone Biagio;Ruoppolo Giovanna;Landi Gianluca
2024
Abstract
The synthesis of methanol and dimethyl ether (DME) through the hydrogenation of CO2-enriched syngas derived from biomass gasification represents a promising approach to mitigate global warming and to reduce dependence on non-renewable crude oil sources. This study aims to comprehensive assess one-step DME synthesis, focusing on key performance indicators such as molar feed ratios, carbon oxides (COx ) conversions, and product yield. Using Aspen Plus simulation software, this research delves into the diverse compositional spectrum of CO2-enriched syngas feedstocks generated from biomass gasification. The evaluation process spans a broad parameter space, considering factors like reaction temperature (ranging from 200°C to 300°C), reaction pressure (varying between 30 and 80 bar), and molar feed ratios of H2/CO, H2/CO2, CO/CO2. An H2/COx=3 ratio strikes a delicate balance between large H2 partial pressure, boosting the reaction (thermodynamically and kinetically), and reduced H2 excess. The thermodynamic and kinetic analysis reveal a negative CO2 conversion. Within the investigated range of operating conditions, 50 bar pressure and 220 °C temperature provided the highest yields and CO conversion.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2989649