tailieunhanh - Handbook of plant based biofuels - Chapter 3

3 Thermochemical Conversion of Biomass to Liquids and Gaseous Fuels Hari Bhagwan Goyal, Rakesh Chandra Saxena, and Diptendu Seal contents Abstract 30 Introduction. 30 Biomass Conversion Processes . 32 Thermochemical Conversion Processes . 32 Combustion . 32 Gasification . 33 Pyrolysis 33 Liquefaction 34 Hydrogenation. | 3 Thermochemical Conversion of Biomass to Liquids and Gaseous Fuels Hari Bhagwan Goyal Rakesh Chandra Saxena and Diptendu Seal CONTENTS Biomass Conversion Thermochemical Conversion Pyrolysis . 33 Pyrolysis of Biomass to Liquid Fuels . 34 Slow Pyrolysis. 35 Fast Pyrolysis. 35 Flash Pyrolysis. 35 Mechanism of Pyrolysis of Pyrolysis of the Pyrolysis of the Pyrolysis of Pyrolysis Properties of Composition of Composition of Pyrolysis Gas and Uses of Bio-Oil and Hydrogen from Biomass . 41 Pyrolysis. 41 Supercritical Water Gasification . 42 Acknowledgments . 43 References. 43 29 2009 by Taylor Francis Group LLC 30 Handbook of Plant-Based Biofuels ABSTRACT Energy management will be difficult for the coming generations due to increasing demand for energy caused by rapid industrialization and social growth. The emerging alternative and renewable energy resources are expected to play an important role in energy consumption scenarios of the future particularly to handle environmental concerns. Biomass is renewable clean and abundantly available and its thermochemical conversion to liquid and gaseous fuels is one of the prospective approaches. Various thermochemical conversion processes namely combustion gasification liquefaction hydrogenation and pyrolysis have been considered for converting biomass into liquid and gaseous fuels. The pyrolysis process has received considerable attention as it converts biomass directly into solid liquid and gaseous products by thermal decomposition of biomass in the absence of oxygen. This chapter focuses on pyrolysis other conventional .