Product Distribution during Co-pyrolysis of Bituminous Coal and Lignocellulosic Biomass Major Components in a Drop-Tube Furnace

Abstract

Co-pyrolysis of the coal blend with lignocellulosic biomass has a significant influence on final product composition of co-gasification and co-combustion. Successful evaluation of the product distribution during co-pyrolysis is very important to understand the overall co-thermochemical process. In this paper, product distribution, especially the gaseous product evolution during a kind of bituminous coal from northern of China blended with lignocellulosic biomass, major model components (cellulose, hemicellulose, and lignin) were explored in a drop-tube furnace from 600 to 1000 °C. The addition of three model components showed different synergistic effects in the product yields and gaseous product composition. Positive synergistic effects in the gas and tar yields were observed during co-pyrolysis of bituminous coal and cellulose, indicating that the addition of cellulose promoted the formation of volatile products. On the contrary, gas yields from co-pyrolysis of bituminous and lignin mixtures showed a ne...