BAMBOO CHARCOAL AND PYROLYSIS LIQUID PRODUCED BY FAST PYROLYSIS TECHNOLOGY

摘要

Bamboo, one of the fast-rotation plant in Asia, is a good agent for absorbing CO_2 when proceedsphotosynthesis. In this study, a fast pyrolysis technology with a bubbling fluidized-bed reactor was applied to convertMakino bamboo sawdust into pyrolysis liquid and charcoal powder. Averaged product yields of pyrolysis liquid andcharcoal were 60.8 wt% and 21.8 wt%, respectively. The pyrolysis liquid contained a lot of acetic acid,hydroxyacetone and acetaldehyde may be used as a biocide or a fertilizer and growth-promoting agent. The pyrolysisliquid had a heating value of 6.93 MJ/kg and a moisture content of 50.6 wt%. The pyrolysis liquid may replace thewater in the combustion of water-fuel emulsion to enhance the combustion stability. Activated charcoal was obtainedby steam with an activated charcoal recovery of 50 wt%. The pH values were increased from 9.25 of charcoal to10.86 of activated charcoal. The high alkalinity of charcoal or activated charcoal may be applicable to soilamendments for acid soils.