Cost-Effective Pathways for Gasification-Based Production of Biofuels
The results show how all evaluated pathways could contribute to decreasing costs for gasification-based production of biomethane. Analysis of demonstration tests performed at industrial scale show that bark gasification is technically feasible for production of advanced biofuels. The feedstock related cost for production of biomethane from bark (dried to about 8%) is in the range of 24.2-32.7 EUR/MWh; a reduction of about 35-45% compared to wood pellets. The evaluation of four different process configurations for utilization of hydrogen produced from electrolysis of water (power-to-gas) in the biomethane plant show that the operating revenue increases with increased addition of hydrogen. The results for the sawmill-integrated gasification-based liquefied biomethane production plant show that the size of the production plant has the largest impact on fuel production cost, followed by feedstock transportation costs for larger plants. It can be concluded that there are clear gains to be obtained by integrating gasification-based liquefied biomethane production at sawmill sites, and that the gains increase with the size of the sawmill.
Chalmers, Rymd-, geo- och miljövetenskap, Energiteknik
Opponent: Professor Tobias Richards, Sektionen för resursåtervinning, Högskolan i Borås