A314 EFFECT OF ACID ADDITIVES ON "SEMI-CARBONIZATION" PYROLYSIS OF WOODY BIOMASS AND TRANSPORTATION

Abstract

Experiments of the "semi-carbonization" that was the new type of pyrolysis at moderate temperature were conducted for cellulose : the main component of woody biomass, citric acid and their mixtures in order to clarify the optimal pyrolysis condition and the effect of acid additives on the semi-carbonization. The acid additive promoted dehydration of woody biomass, and affected the weight yield of char within the temperature region of the semi-carbonization. The analytical model to evaluate the energy value of the semi-carbonized fuel was presented based on the reduction in the value due to the transportation. The optimal pyrolysis condition of the semi-carbonized fuel was clarified for the dimensionless distance of the transportation. It was found that the acid additives contributed to saving the energy consumption of the "semi-carbonization" pyrolysis process and improving the transportation.