Production of Electricity from Rice Husk

PRODUCTION OF ELECTRICITY FROM RICE HUSK

ByNikhil.P

Sai Madhav.G

Epilogue

This study considers the environmental assessment of power generation from rice husk,

a waste product in rice mills.

LIST OF CONTENTS

1. INTRODUCTION 2. RICE HUSK 3. PROCESS DESCRIPTION 4. RESULTS 5. CONCLUSION 6. REFERENCES

INTRODUCTION• Utilization of fossil fuels has caused serious

environmental impacts such as global warming caused primarily by COX and acidification by SOX and NOX.

• Unlike fossil fuels, biomass can be used to reduce greenhouse effect because trees absorb CO2 as they grow and this carbon is released when the biomass is combusted.

• To confirm whether energy production from biomass has lower emissions than conventional fuel production, an environmental assessment is done in this study using the life cycle assessment methodology.

Rice Husk• Rice hulls (or rice husks) are the hard

protecting coverings of grains of rice. In addition to protecting rice during the growing season, rice hulls can be put to use as fertilizer, insulation material, or fuel.

• Use: A number of rice-producing countries, (e.g., India, Thailand), are currently conducting research on industrial uses of rice hulls.

Biomass power industry-California

Process Description• System boundary of the study is set for doing

the environmental assessment using the Life Cycle approach.

• Raw material, electricity and resource consumption, electricity generated, waste and emissions generated have been considered within the boundary.

• List of all flows – Water, Flue gas, Steam, Electricity and ash.

Results• SO2, NO2 and CO2 emissions from the process are

studied and they are found to be less than the other production methods which we are using presently.

• Dust emissions from rice husk power plant are higher than coal and gas power plants, but slightly less than oil power plants.

• It is known from previous research that rice husk combustion produces significant amounts of particulate matter.

• However, the rice husk power plant has multi-cyclone and electrostatic precipitator for dust removal.

CONCLUSION• In India, a large portion of the electricity production

is from fossil fuels causing concern for energy security as well as environmental emissions of CO2, SO2 and NOX.

• Biomass has been proposed as one of the alternative (renewable) energy sources of energy which can, to extent, offset the use of fossil fuels.

• This is especially suitable for India since it is an agricultural country.

• However, it must be ascertained whether electricity production from biomass is really benign.

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