Solar thermochemical conversion of biomass

摘要

The purpose of this paper is first to briefly describe the usual routes of biomass thermochemical conversion and then to discuss the possibility of using concentrated solar energy to provide the necessary heat for the processes. Gasification, fast and slow pyrolysis are more particulary described. They can be carried out for the preparation of a vast range of possible products that can be used as energy carriers and/or as a source of chemical commodities. The gasification processes are intended for the preparation of gas mixtures (CO, H_2, etc.) for chemical synthesis, heat or electricity generation. The fast pyrolysis formerly carried out for gas production (CO, H_2, light hydrocarbons, etc.) is now mainly studied with the objective to produce liquids (bio-oils).