Coal gasifier plant

Gasifier converts biomass into a gaseous form called producer gas through different chemical reactions like dehydration, pyrolysis, combustion/oxidation and reduction in the presence of red hot charcoal. The last step, the heart of gasification, ultimately converts carbonaceous compounds of biomass into carbon monoxide, hydrogen, methane and carbon dioxide. The key factor for the reaction is carbon (C), hydrogen (H), nitrogen (N), oxygen (O) and sulfur (S) content of the biomass and gasifying agents used: air, oxygen or steam. The amount of hydrogen can be increased by using steam as a gasification agent and amount of carbon monoxide can be increased by using oxygen as a gasification agent. 1 kg of biomass having calorific value in the range of 3500-4500 kcal/kg can generate around 2.5-3.0 Nm3 producer gas having calorific value of 1000-1200 kcal/Nm3.