Title:
Energy Valorization of Hydrolytic Lignin Residue via Steam/Oxygen Gasification
Author(s):
Barisano, D., Nanna, F., Freda, C., Villone, A., Nistri, R., Chiaramonti, D., Rizzo, A.M.
Document(s):
Paper
Abstract:
To make biorefinery processes valuable from both economical and energy perspectives, all components of the starting feedstock need to be properly valorized. In the present work the results obtained in steam/oxygen gasification tests on a lignin rich residue from second generation bioethanol production process are presented. The residue was collected at the end of a process of simultaneous hydrolysis and fermentation, adopted to convert sugars from steam-exploded biomass. The gasification tests were carried out with a bubbling fluidized bed reactor at: 850 °C, 1 atm, 0.3 equivalence ratio (ER) and 0.6 steam/biomass (S/B). Under these conditions, it was found an average dry gas composition of: 25%v CO, 37 %v H2, 30 %v CO2, 7 %v CH4, 2% C2+ and a gas yield of 1.3 Nm3/kgdaf. Clogging of the feeding screw and appearance of bed defluidization were occasionally observed. Nevertheless, the gasification tests were run for several hours without interruption. Based on the data of performance of the gasification facility it was possible to evaluate the potential of power production. The electrical output was found consistent with the internal needs of a commercial plant for bioethanol production, sized to process up to 200 ktonnes/y of biomass.
Keywords:
bioethanol, biorefinery, gasification, syngas, lignin residue
Topic:
R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Gasification for synthesis gas production
Event:
21st European Biomass Conference and Exhibition
Session:
2AO.4.2
Pages:
430 - 434
ISBN:
978-88-89407-53-0
Paper DOI:
10.5071/21stEUBCE2013-2AO.4.2
Price:
FREE
