| 摘要 |
Provided is a carbonization method which allows efficient carbonization treatment of high moisture content biomass by dry distillation without having to substantially upgrade already existing carbonization devices. In this carbonization method, the following three steps are performed continuously for a fixed period of time: a first step in which a distillation gas and a carbonized fuel derived from low moisture content biomass are obtained by thermal decomposition of low moisture content biomass in a carbonization furnace, a second step in which dry biomass is obtained by drying high moisture content biomass in a dryer by means of the high-temperature gas obtained by secondary combustion of the dry-distilled gas obtained in the first step, and a third step in which the dry biomass obtained in the second step is stored; thereafter, the following three steps are performed continuously for a fixed period of time: a fourth step in which the dry-distilled gas and a carbonized fuel derived from high moisture content biomass are obtained by thermal decomposition of stored dry biomass, a fifth step in which dry biomass is obtained by drying high moisture content biomass in a dryer by means of a high-temperature gas obtained by secondary combustion of the dry-distilled gas obtained in the fourth step, and a sixth step in which the dry biomass obtained in the fifth step is stored. |
