Microwave gasification and oxy-steam combustion for using the biomass char

Abstract

To use the biomass char as energy, we carried out a study on biomass carbon receptor-applied microwave reforming to secure energy conversion technology using carbon dioxide, a major greenhouse gas. In the case of the microwave reforming, it was shown that the carbon dioxide can be converted into gas fuel, which is carbon monoxide, and fixed carbon fuel through CO2 gasification reforming on the carbon receptor, and the conversion rate of carbon dioxide was 65% at a reforming temperature of 900 °C. We applied the oxy-steam combustion technology to use the biomass char as a carbonized fuel and performed numerical calculations on the changes in oxygen supply and steam supply to identify these combustion characteristics. As the oxygen supply increased, the combustion temperature remained constant after initially showing the maximum temperature rapidly. Residual char, carbon monoxide and carbon monoxide were also relatively increased in good combustibility and decreased after initial generation. When the steam supply was increased, the temperature increase rate and the maximum temperature were relatively low. Residual char and carbon monoxide were reduced by combustion after remaining until the latter half by combustion.