Comparison of Hydrous Pyrolysis Products from Organic-Rich Sediments and Biomass

Abstract

Pyrolysis experiments have been conducted on oil shale, lignite, and biomass in a 100 mL stainless-steel cylindrical reactor at 725, 825, 925, and 1025 K isothermally. The pyrolysis product distribution is strongly dependent on reactor geometry, temperature, heating rate, residence time, mass transfer velocity, and pressure. Temperature and water-to-sample ratio were pyrolysis parameters. The yield of tarry materials of Göynük oil shale and Yata < an lignite increased from 23.1 to 29.8% and 13.7 to 21.8%, respectively, while the final pyrolysis temperature was increased from 725 to 1025 K. The yield of gaseous products of Göynük oil shale, Yata < an lignite, and solid waste increased from 8.6 to 14.9%, 6.7 to 16.1%, and 23.5 to 37.0%, respectively, while the final pyrolysis temperature was increased from 725 to 1025 K. The yield of tarry materials of Göynük oil shale and Yata < an lignite increased from 21.45 to 37.5% and 11.7 to 25.8%, respectively, while the final pyrolysis water-to-sample ratio was increased from 1:1 to 5:1 at 825 K.