Question

what is bio oil? how to make bio oil from fast pyrolysis?

Answer 1

Ans • Bio-oil is the liquid praction of the pyridysis product of biomass. Bio-oil is a highly oxygenated, free-flowing dark brown organic liquid. Bio-oil contains a large large amount of water(alund | 25/-) that is partly derived from the original moisture in the biomass and þaully the heavetion product. The composition of bio-oil depends mainly on two factors: Biomass ® Process used. A typical bio-oil has the following compositions ! • Lignin fragments • Water • Carboxylic acids • Carbohydrates - Phenols • Alcohols • Ketones Furfurals I Bio-oil is also called Biocrude.)

Fast pyrolysis is a process in which organic materials such as biomass are rapidly heceted to 450 – 600°C in the abscence of avr. Under these conditions, organic vapors, pyrolysis gases and charcoal are produced. The vapowrs are condensed to bio-vil. In the past pyrdysis process, the main requirements are : • Relatively high temperatwie ( 450 – 600°C) • A short residence tine (~18) • Atmospheric pressure • Drying necessary The light small molecules are converted to oily products through homogeneous reactions in the gas phase. Cool Volatiles condensablegas - (Gas, Vaboss,alxosols) Incondensable gas dues quickly oil Biomass char