| 摘要 |
PURPOSE: A tar-free biomass gasifying method using a high-temperature secondary reactor is provided to supply synthetic gas generated from a fluidized-bed gasifier to the high-temperature secondary reactor for removing tar. CONSTITUTION: A tar-free biomass gasifying method using a high-temperature secondary reactor comprises the following steps: inserting solid fuel into a fluidized-bed gasifier(110) with air, oxygen or steam to obtain synthetic gas(130) containing tar and discharge ash(140) containing unburned carbon; supplying the synthetic gas to the high-temperature secondary reactor(120), and inserting particle or liquid waste(150) with air or oxygen into the high-temperature secondary reactor for combusting at the temperature greater than 1,000 deg C; extracting tar-free synthetic gas(160) from the high-temperature secondary reactor; and inserting the ash containing the unburned carbon into the high-temperature secondary reactor, and maintaining the temperature of the high-temperature secondary reactor at 1,200-1,300 deg C before increasing the temperature at 1,400-1,500 deg C for re-combusting the unburned carbon. |
