A Study on Characteristics of Wood Pellet Gasification in Two Stage Gasifier

In this study, characteristics of wood pellet gasification was studied using a Two Stage Gasifier which is consisted of pyrolysis reactor and ultra high temperature reformer. The average yields of H2, CH4, CO, CO2 were 16.7, 11.3, 37.2, 26.6 L/mim, conversion rate from biomass to gas was 65% in pyrolysis reactor and gas yields in reformer were 55.4, 0.8, 120.8, 56.8 L/mim , respectively. The hydrogen flow rate from reformer is obtained 360.1 L/hr. The most of CH4 was decomposed from 12.3 to 0.3 vol.% while H2 is from 18.2 to 23.7 vol.% in reformer by methane dry reforming, Boudouard reaction, oxidation and/or steam reforming. The amount of H2O generated by hydration reaction from reformer was 1111.8 g, its accelerated conversion of CH4 to other products. The conversion rate from CH4 to other Compounds was 97.2%. Cold gas efficiency was 53.2%.