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Slide 1: 

A PRESENTATION ON “GASIFICATION OF WOOD” BY TEJAS.N.DONGRE

POINTS TO BE DISCUSSED : 

POINTS TO BE DISCUSSED INTRODUCTION PROCESS OF GASIFICATION WORKING OF GASIFIER USES OF WOOD GAS RESULTS AND DISSCUSSIONS CONCLUSION

INTRODUCTION : 

INTRODUCTION what is gasification ? History of gasification What is wood gas ? Composition of wood gas

What is wood gas ? Wood gas is a syngas also known as producer gas which is produced by thermal gasification of biomass or other carbon containing materials such as coal in a gasifier or wood gas generator or producer gas. The heat of combustion of producer gas is rather low compared to other fuels."producer gas" has a lower heating value of 5.7 MJ/kg versus 55.9 MJ/kg for natural gas and 44.1 MJ/kg for gasoline. The heating value of wood is typically 15-18 MJ/kg. Composition of wood gas :- Nitrogen N2: 50.9% Carbon monoxide CO: 27.0% Hydrogen H2: 14.0% Carbon dioxide CO2: 4.5% Methane CH4: 3.0% Oxygen O2: 0.6%.

GASSIFICATION OF WOOD : 

GASSIFICATION OF WOOD What is wood gas generator ? Chemistry Processes - counter current gasifier - co-current gasifier - fiuidized bed gasifier

GASSIFICATION PROCESS COUNTER CURRENT GASIFIER : 

GASSIFICATION PROCESS COUNTER CURRENT GASIFIER

Slide 7: 

Advantages Simplicity High charcoal burnout High equipment efficiency Operation with many types of feedstock Dis-advantages Dangerous explosive situations Automatic moving grates Disposal of tar containing condensates

CO-CURRENT GASIFIER : 

CO-CURRENT GASIFIER

Slide 9: 

Advantages Tar free gas Less environmental objections Dis-advantages Inability to operate on number of unprocessed fuels High ash content Lower efficiency

CROSS-DRAUGHT GASIFIER : 

CROSS-DRAUGHT GASIFIER

FLUIDIZED BED GASIFIER

Slide 12: 

Advantages Easy control of temperature Ability to deal with fluffy & fine grained materials Dia-advantages High tar content Incomplete carbon burnout

HOW DOES A GASIFIER WORKS : 

HOW DOES A GASIFIER WORKS

USES OF WOOD GAS : 

USES OF WOOD GAS Usage in reciprocating engines Use in stoves, cooking and furnaces

Use in reciprocating engines : 

Use in reciprocating engines

Results and Discussion comparison chart : 

Results and Discussion comparison chart

CONCLUSION : 

CONCLUSION Highly efficient. Less polluting as compared to other energy fuels. Less costly compared to other energy fuels. Can be used for cooking also. No refining of fuel is required.

Slide 18: 

THANK YOU

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