Napier Grass: The Super Crop Powering India’s Biomass Revolution

📝 Overview

Napier Grass (Pennisetum purpureum) is emerging as a super crop in India’s biomass and renewable energy sector. With its high yield, fast growth, and adaptability to various climates, it’s the perfect raw material for producing biomass pellets used in industrial heating, power plants, and export markets.

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🌾 Yield and Growth Potential

• Yield: 150–200 tons per acre per year (fresh biomass)
• Harvest Frequency: 4–6 cuts annually
• Moisture Content: ~70–75% fresh, needs dewatering before pelletization

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⚙️ Processing Method & Required Machinery

1. Dewatering Press
   • Reduces moisture from 70% to approx. 40%
   • Mechanical roller-type press
2. Flash Dryer
   • Brings moisture down to below 15%
   • Uses hot air for rapid drying
3. Pellet Mill
   • Converts dry grass into dense cylindrical pellets
   • Pellet Diameter: Typically 6mm or 8mm
   • Output: 1–5 TPH based on mill size

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📦 Raw Material Sizing

• Chopped Size: 10–25 mm
• Ensures uniform feeding into hammer mill or mixer
• Optional: Pre-shredding with biomass shredder before pressing/drying

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💡 Benefits in Pelletization

• High Volatile Matter (70–75%) → Easy ignition
• GCV: 3800–4200 kcal/kg
• Low Ash: ~5–8%
• Eco-friendly: Carbon-neutral and sustainable

Dense Form: Easier to transport and store

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