Biomass Gasification

The Process

In the Biomass gasifier, the biomass gets dried, heated, pyrolysed, partially oxidized and reduced in this reactor as it flows through it. Four distinct processes take place in a gasifier :
	Drying of the fuel
	Pyrolysis
	Combustion
	Reduction

Although there is a considerable overlap, each process can be considered to be occupying a separate zone, in which fundamentally different chemical and thermal reactions take place. The fuel must pass through all of these zones to be completely converted

The essential characteristics of the down-draft gasifier design being used in our gasifiers is that it is designed so that the tars given off in the pyrolysis zone are drawn through the combustion zone, where they will be broken down or burned. When this happens, the energy they contain is usefully recovered and the mixture of gases in the exit stream is relatively clean.