Paddy Straw Pellet Machine — 1 vs 2 vs 5 TPH

The pellet press is the bottleneck on a paddy-straw line. The 8th-Generation Centrifugal Pellet Machine has a 1,500–2,000 kg/h nameplate at 5–7 kg/cm² working pressure on a ring die. A 1 TPH plant runs the press at the lower end of its band; a 2 TPH plant runs at nameplate; a 5 TPH plant runs two presses in parallel or one press with overflow buffer between hammer-mill and dryer.

Capex does not scale linearly with throughput. The hammer mill (5 TPH at 173 kW) and flash dryer (5 TPH at 40 kW) are sized for 5 TPH at nameplate — under-utilising them on a 1 TPH plant means you pay for capacity you don't use. Most operators size the press to capacity target and run the hammer mill and dryer with spare buffer.

Opex scales linearly with feedstock. At field-edge paddy straw prices of ₹2–4 per kg, a 5 TPH plant running 80% utilisation (~13,000 tonnes per year) consumes ~₹3–5 crore of feedstock annually. Pellet sales at ₹6–11 per kg (4,000+ kcal/kg fuel) yield revenue of ~₹8–14 crore. Margins, naturally, depend on power, labour and finance costs that vary by district.

For most Punjab operators, the 2 TPH single-line plant is the sweet spot. It runs the 8th-Gen press at nameplate, keeps balance-of-plant utilisation high, and matches typical paddy-straw aggregation volumes from a 5–10 km collection radius around the plot. The 5 TPH plant is for operators with established NTPC offtake contracts or rice-mill co-location.

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• #engineering
• #paddy-straw