Indirectly Heated Pyrolysis for Selected Biomass Materials

Pyrolysis is an important basic process for biomass thermo-chemical conversion. By different condition of the process, a series of technologies can be designed to produce different products, such as mid-Btu gas, syngas, liquid fuel and hydrogen. This paper presents the experimental data for selected biomass materials on indirectly heated pyrolysis process. The influences of temperature on parameters such as pyrolysis products, mass balance relationship, composition of gas, are described. This research paves the way to two technical directions. One combines with a gasifier to produce gas with very low tar content, which can be used to generate electricity. Another, in association with secondary decomposition process, generates hydrogen-rich gas.