Abstract
In this study, effects of fuel composition of biomass gas on the ion current of burner flame were researched to clarify feasibility of ion current probe method for biomass gas flame. A mock biomass gases consisting of H2, CH4, CO, CO_2 and N2 were used in this study. As a result, it was showed that the ion current are not detected when CH4 are not included in the fuel. It was also showed that the increase of the ratio of CH4 or H2 content makes the ion current value increase, the increase of the ratio of CO_2 makes the ion current value decrease and the increase of the ratio of CO doesn't change the ion current value. This suggests that the change of the composition of biomass gas can be detected by the ion current probe method when CH4 is included in the fuel. Meanwhile, effects on ion current value of each gas flow per unit flame surface were similar to the effects of the ratio of each gas contents.
