Title:
The Creation of Renewable Energy by Supercritical Water Gasification with Food Waste
Author(s):
Wada, Y., Nakamura, A., Matsumura, Y., Noguchi, T., Inoue, T.
Document(s):
Paper
Abstract:
Supercritical water gasification (SCWG) of biomass holds promise as a technology to convert biological waste (biomass) into valuable, environmentally friendly energy. Rather than eliminating the high water content in biomass feedstock, SCWG uses the water as a solvent for the reaction. It is suitable for energy conversion of wet biomass. The shochu residue is wet-biomass and waste water produced by distillation process. Brewers are paying high treatment cost for them. SCWG process for shochu residue is the effective utilization method for thermal energy creation and dirty water treatment, because of the necessity of steam generation for distillation process on site. Long-time continuous operation with a large-scale device is important for commercialization, but few studies have been reported because of the plugging trouble. We conducted continuous SCWG tests with appropriate concentration of the activated carbon for 1 d. As a result, 24 h continuous SCWG test has been kept the stable gasification condition. Tar adhesion plugging have been suppressed. However, fouling factor and pressure loss of heat exchanger inner tube have been influenced by tar adhesion on the tube wall. Thermal conductivity of tar was determined as 5.47 W/mK.
Keywords:
activated carbon, supercritical water, suspended catalyst, shochu residue, heat transfer
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for power, CHP and polygeneration
Event:
23rd European Biomass Conference and Exhibition
Session:
2DV.1.13
Pages:
800 - 802
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-2DV.1.13
Price:
FREE
