What is Biomass Gasification?
Biomass such as firewood and agriculture-generated residues and wastes are generally organic. They contain carbon, hydrogen, and oxygen along with some moisture (in the case of animal wastes, moisture content can be very high). Under controlled conditions, characterized by low oxygen supply and high temperatures, most biomass materials can be converted into a gaseous fuel known as producer gas, which consists of carbon monoxide, hydrogen, carbon dioxide, methane and nitrogen. This thermo-chemical conversion of solid biomass into gaseous fuel is called biomass gasification. Most of the inorganic constituents in the feedstock are chemically altered and either discharged as bottom ash, char, or entrained with the raw product gas as fly-ash. Depending on the type of biomass used, volatile and condensable organic and inorganic compounds may also be produced during gasification. The raw bio-gas, if not combusted immediately, can be cooled, filtered, and scrubbed to remove condensables and an
