Abstract
This report describes experimental results of a small scale updraft fixed-bed gasifier for wood chips. The characteristic of wood chips such as size and water content vary depending on how to make chips and state of conservation, respectively. Therefore, it is important to devise the gasification method corresponding to various woody biomass for wide use of woody biomass energy. In order to clarify the effect of wood chips characteristic on gasification, the experimental was performed in different condition in terms of grain size and water content. Fluctuations of temperature distribution, pressure difference between inlet and outlet of reactor, and CO concentration were measured. By using these results, combustion state and construction of wood chips in the reactor were deduced and effects of grain size and water content of wood chips on gasification are discussed.
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