No.18 Caking property of bituminous pitch obtained by thermal-hydrogenation reaction of woody biomass

Abstract

Thermal-hydrogenation reaction of woody-biomass was carried out in a hydrogen-donor solvent by using a 50ml batch-type autoclave, and a bituminous pitch was obtained by vacuum distillation. Coking test of the pitch was performed at 1000℃ for 30 min under a N_2 atmosphere, and the products (cokes) were observed by a polarization-microscope. The pictures clearly showed that optically anisotropic textures well developed in the cokes derived from the pitch produced at 400 - 410℃, which indicated that the pitch could be used as a substitute of coaltar pitch.