| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method of biomass pellets which uses thinned wood and waste wood as raw materials, avoids the risk of self-ignition combustion while increasing the moisture drying limit, achieves water resistance and improves the production efficiency by reducing energy and time necessary for production.SOLUTION: A production method of biomass pellets comprises charging crushed wood into an oven which has vertically a heating reduction drier for drying wood and a cooling tower for heat recovery of biomass pellets and guides waste heat-recovered heating air sucked from a connection part between the heating reduction drier and the cooling tower to the oven for combustion of raw material chips and product refuse to generate a heating reduction dry gas and blow to the heating reduction drier, drawing out dried wood from the lower part of the heating reduction drier, pelletizing by a compression pressurization machine, transferring to the cooling tower to recover waste heat for energy saving. |
