The invention discloses a novel method for utilizing rubber wood timber brushwood and slab
sawdust. The novel method comprises the following steps of: screening and crushing brushwood,
wood shavings, slab
sawdust and the like to obtain rubber wood
powder, mixing the rubber wood
powder with catalyst
phosphoric acid according to the weight ratio of 1:(1-4), preparing
active carbon with specific surface area of 1600m<2> through
drying, activating, washing and stoving processes, and simultaneously recovering the catalyst; adding the wood
powder to a
carbonization furnace, and preparing rubber wood
biomass powdered carbon by utilizing a slow-speed
pyrolysis process; simultaneously, recovering
combustible gas separated from
pyrolysis gas in a
pyrolysis process in a condensation manner so that the
combustible gas is applied to an
active carbon preparation process; mixing
biomass oil which is liquid condensed from the pyrolysis gas with
biomass powdered carbon, and carrying out
extrusion forming by utilizing a mould to prepare various specifications of
biomass carbon; and treating residual ash after
biomass carbon combustion by utilizing recovered
phosphoric acid with the concentration of 10-40% in an
active carbon preparation process to obtain a liquid compound
fertilizer and a grain
fertilizer with adjustable proportion of
potassium to
phosphorus. The invention relates to a comprehensive utilization process
route for producing high-specific-surface-area
activated carbon, sectional carbon and compound
fertilizer by taking brushwood,
wood shavings and slab
sawdust, generated by a rubber wood treating process, as raw materials.