Bio Energy Aspects

Shri. Ramesh Chivukula

Technical Director
Areva Renewable Energies – India

About Speaker

Ramesh Chivukula is the Technical Director, at AREVA Renewable Energies India, Chennai centre. He has three decades of experience in Design & Engineering of Power Plants, including OEM Engineering (Steam Turbines). He worked with BHEL from sept 1983 to Sept 1997. He has experience of Over 20 years of hands on engineering management-EPC contracting Companies (Thermax in India, National Contracting Co, Saudi Arabia). He received B.E in Mechanical Engineering from NIT Tiruchirappalli. He is working with Areva since Nov 2007. He is also nominated as Areva Senior Expert (Level 2). Over the last two years have involved in various Renewable Energy Technologies -Biomass,Waste Heat and Solar Thermal.

Talk Abstract

The government is promoting renewable energy in India through Incentives. Preferential tariffs are provided in state levels. Capital subsidies is provided from 10 to 90% of project6 cost. India is the only country in the world which have a dedicated ministry for Renewable Energy. India has 15,000 MW potential of Bio-mass energy. According to Economic survey Dec 2014 India has 33.8 GW installed capacity or Renewable energy. India has a ambitious target to achieve 100,000 MW of Solar energy and 60,000 MW of wind energy by 2022.

Energy production through Bio-mass will utilise our bio wastes like rice husk, coconut husk, industrial waste wood, forestry waste etc. Biomass is biological material derived from living, or recently living organisms. Conversion of biomass to biofuel can be achieved by different methods which are broadly classified into: thermal, chemical, and biochemical methods. Biomass delivers most energy for the domestic use (rural – 90% and urban – 40%) in India (NCAER, 1992). Wood fuels contribute 56 percent of total biomass energy (Sinha et.al, 1994). Consumption of wood has grown annually at 2 percent rate over past two decades.

AREVA is a global leader in the production and operation of biomass power plants, with over 38 years of experience in bioenergy and more than 95 plants built worldwide, representing 2.5 GW of installed capacity. These plants are located in Brazil, Chile, Germany, the Netherlands, India and Thailand. In 2012, Areva acquired a bio-coal production technology called Thermya, which produces a biofuel issued from biomass torrefaction that can replace coal to generate thermal energy and electricity.

Various thermo-chemical conversion technologies are used mainly to generate electricity and heat. Gasification is a process that converts organic or fossil fuel based carbonaceous materials into carbon monoxide, hydrogen and carbon dioxide. This is achieved by reacting the material at high temperatures (>700 °C), without combustion, with a controlled amount of oxygen and/or steam.Pyrolysis is a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen (or any halogen).Torrefaction is a thermal process that involves heating the biomass to temperatures between 250 and 300 degrees Celsius in an inert atmosphere.

Biomass systems can be used for village-power applications in the 10-250 kW scale, for larger scale municipal electricity and heating applications, for industrial application such as hog-fuel boilers and blackliquor recovery boilers, in agricultural applications such as electricity and steam generation in the sugar cane industry, and for utility-scale electricity generation in the 100 MW scale. There is a great deal of research involving algal or algae-derived & biomass to liquids and cellulosic ethanols are still under research.

 

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