Agrowaste Power Technologies
Number of technologies are available for power generation using biomass as fuel and are categorized as a) Thermo-Chemical conversion b) Biological conversion
For more information please visit following URLs:
Various processes under Thermo Chemical Conversion are given below.
Pyrolysis : Thermal decomposition of organic matter under vacuum or inert atmospheric conditions.
Gasification : Thermal decomposition of organic matter in the presence of limited supply of air or oxygen to produce combustible gases thus converting calorific value of organic material into a gaseous carrier.
Densification : Physical compaction of loose biomass into uniform size solid fuel.
Direct Combustion : Thermal decomposition of organic matter is carried out in the presence of excess air, liberating heat and leaving behind incombustible ash.
Liquification process : Subjecting Biomass to high temperatures and pressures resulting in a large proportion of liquid as end products.
The various processes under Biological Conversion are :
Bio-Methanation : Biological treatment of industrial and municipal liquid waste streams under suitable Temperature resulting in release of methane gas.
Ethanol Conversion : Ethanol used as a Fuel - Biological process of conversion of food plants to liquid fuel Ethanol.
The most common is direct combustion or thermal method, which has following features. The power plant mainly consists of Steam Turbine Generator set of required capacity. The steam requirement for the Turbine Generator is met through Traveling Grate Boiler. The plant apart from the STG and Boiler units consists of various auxiliary plants and systems like DM Water system, Cooling water system, Compressed air system, Fire fighting equipment, Fuel and Ash handling systems, switch gear and switch yard etc.
Please see the website: www.teriin.org
for the detailed paper on "Technology Options for Municipal Solid
Waste-to-Energy Projects" by Dr. Sudhir Kumar.