Steam Production from a Biomass with High Concentration of Ash and Nitrogen Employing Fixed-Bed Gasification Followed by Two-Staged Combustion

T. Yamagishi, S. Igawa & T. Matsui
175kWth steam production from 3.6 ton/day spent mushroom substrate with high concentration of ash and nitrogen was demonstrated employing a drier, a pelletiser, a downdraft fixed-bed gasifier, a producer gas fired furnace and a heat recovery steam generator. Since load following operation at weekly start and stop cycle will be required in the practical use in mushroom industry, a 100 hours test was performed both at part load and at full load to examine the...