Comparison of Experimental Results with Thermodynamic Equilibrium Simulations of Supercritical Water Gasification of Concentrated Ethanol Solutions with Focus on Water Splitting

• DOI: 10.1021/acs.iecr.3c01595
• Publication Date: 2023-08-07T17:26:01Z
• Authors: Julian Dutzi; Athanasios A. Vad...; Nikolaos Boukis; Jörg Sauer
• Keywords: Methanation; Supercritical water oxidation; Stoichiometry

Supercritical water gasification (SCWG) is a process in which biomass reacts with supercritical to produce H2 and CH4-rich gas. The water-to-biomass ratio crucial variable SCWG that affects the energy efficiency of process. Despite clear concept, systematic studies on consumption during formation gaseous products are lacking. This study aims determine organic feedstock. Ethanol was used as an model compound since mass balances complex biomasses like lignocelluloses often incomplete due solid deposits. ethanol concentration ranged from 1.2 72 wt %, complete achieved all cases. Water decreased increase enhanced methanation reactions increasing organics. Stoichiometric calculations ASPEN HYSYS simulations confirmed experimental results, showing equilibrium gas compositions reaction system.