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Biomass Gasifier
Nath Motors provides clean energy generation through biomass gasification.Biomass Gasifier is a thermo-chemical reactor where Biomass gasification takes place which is a conversion of solid fuels(Wood & Agricultural waste etc) into a combustible gas mixture normally called "Producer gas".

Due to rapid industrialization and the burning of fossil fuels all over the world lead to emission of CO2. Contributes 50% of green gas emission One of the remedies to limit the rising content of CO 2 in the atmosphere is energetic use of biomass fuel. Biomass is basically an organic material, which includes wood, crop residues, solid waste, animal wastes, sewage, and waste from food processing. Biomass is Your browser may not support display of this image. made up of mainly carbon and hydrogen.

Biomas Gasification Industrial Applications of Biomass Gasification
Industrial Applications
of Biomas Gasification
Industrial Applications of Biomass Gasification

Advantage Gasification
In this process, biomass is converted into a mixture of gases through a thermo-chemical reaction called producer gas consisting of combustible gases mainly hydrogen, carbon mono oxide and methane, non-combustible gases nitrogen, carbon dioxide and water vapor. The essence of gasification process is the conversion of solid carbon fuels into carbon monoxide by thermo chemical process. The gasification of solid fuel is accomplished in air sealed, closed chamber, under slight suction or pressure relative to ambient pressure This technology enables you to directly treat Green Wood / Biomass having moisture content of 10-15% without using a drying process.

Biomass gasification is completed in many stages that elaborated and explained with a flow diagram given below

Biomas Gasification

Drying : Biomass fuels consist of moisture ranging from 5 to 35%. At the temperature above 100 o C, the water is removed and converted into steam. In the drying, fuels do not experience any kind of decomposition.

Pyrolysis : Pyrolysis is the thermal decomposition of biomass fuels in the absence of oxygen. Pyrolysis involves release of three kinds of products such as solid, liquid and gases. The ratio of products is influenced by the chemical composition of biomass fuels and the operating conditions. The heating value of gas produced during the pyrolysis process is low (3.5 - 8.9 MJ/m 3 ). It is noted that no matter how gasifier is built, there will always be a low temperature zone, where pyrolysis takes place, generating condensable hydrocarbon.

Oxidation : Introduced air in the oxidation zone contains, besides oxygen and water vapors, inert gases such as nitrogen and argon. These inert gases are considered to be non-reactive with fuel constituents. The oxidation takes place at the temperature of 700-2000oc. Heterogeneous reaction takes place between oxygen in the air and solid carbonized fuel, producing carbon monoxide. Plus and minus sign indicate the release and supply of heat energy during the process respectively

C + O 2 = CO 2 + 406 [ MJ/kmol] In reaction 12.01 kg of carbon is completely combusted with 22.39 m3 of oxygen supplied by air blast to yield 22.26 m 3 of carbon dioxide and 393.8 MJ of heat.

Hydrogen in fuel reacts with oxygen in the air blast, producing steam . H 2 + ½ O 2 = H 2 O + 242 [ MJ/kmol] Reduction In reduction zone, a number of high temperature chemical reactions take place in the absence of oxygen. The principal reactions that takes place in reduction are mentioned below.

Boudouard reaction - CO 2 + C = 2CO - 172.6 [MJ/kmol]
Water-gas reaction - C + H2 O = CO + H 2 - 131.4 [MJ/kmol]
Water shift reaction - CO 2 + H 2 = CO + H 2 O + 41.2 [MJ/kmol]
Methane production reaction - C + 2H 2 = CH 4 + 75 [MJ/kmol]

From above thermo-chemical reaction it may be understood that heat generated in pyrolysis is absorbed in reduction process. Hence, the temperature of gas which is very high in the beginning goes down as it passes through various stages. If complete gasification takes place, all the carbon is burned or reduced to carbon monoxide, a combustible gas and some other mineral matter is vaporized. The remains are ash and some char (unburned carbon).

Advantage Gasification
  • It saves upto 73% of fuel cost when compared to conventional fuel options
  • Low initial investment and cost of power production
  • Applied over a range of output ratings (5KWe to 2Mwe) with flexuble process control
Range of Applications

Power Generation:
  • Round the clock Power Generation
  • Pumping and Irrigation
  • Village electrification
  • Captive power(industries)
  • Grid -fed power from energy plant installed on wastelands
Thermal Applications
  • Hot Air Generators
  • Dryers
  • Boilers
  • Thermic Fluid Heaters
  • Ovens
  • Furnaces & Kilns
Gasification for Energy Supply
Rural areas in the developing countries India are characterized by disperse population and a lack of infrastructure. Energy is the basic mean in improving the living standard and productivity. Energy is required in household for lighting and running electrical apparatus such as TV and Radio. Energy is also demanded in agriculture for operating irrigation pumps and other machinery such as thresher.

Gasification for Energy Supply Gasification for Energy Supply

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