Biomass Pellet Fuel Production Line — 3.0–3.5 T/H

Biomass Pellet Fuel Production Line — 3.0–3.5 T/H

Location: New Zealand | Commissioned: 2025 | Product: Biomass Fuel Pellets Raw Materials: Wood chips & sawdust Design Capacity: 3.0–3.5 metric tons per hour

Total Installed Power: ~280–320 kW

Building Dimensions (L × W × H): 18 m × 20 m × 24 m

📋 Complete Production Process Flow

  1. Raw Material Reception & Grinding Wood chips and sawdust are received and sorted. Oversized chips pass through a hammer mill and are ground to uniform particles of 3–5 mm — the ideal size for pelletizing.

  2. Drying Material passes through a rotary drum dryer. Moisture is reduced to 10–15%, the optimal range for forming strong, durable pellets.

  3. Conditioning Temperature and moisture are adjusted; steam may be added to soften natural lignin in the wood. No external binders are needed — the lignin itself acts as the natural binder.

  4. Pelletizing Prepared material enters a heavy-duty ring-die pellet mill. Under high pressure and temperature (120–160°C), it is extruded into cylindrical pellets, typically 6–8 mm diameter × 20–30 mm length.

  5. Cooling & Screening Hot pellets from the mill are cooled to near-ambient temperature in a high-capacity counter-flow cooler. They are then screened to remove fines and dust, which are recycled back into the process.

  6. Storage & Packaging Finished pellets are stored in silos and packaged in 15–25 kg bags, 1-tonne bulk bags, or supplied in bulk according to market demand.

⚙️ Main Equipment Configuration

Equipment Function Approx. Power
Reception Hopper + Feeder Controlled, uniform feeding 5–7 kW
Hammer Mill Grinding chips to 3–5 mm particles 90–110 kW
Rotary Drum Dryer Drying to target moisture content 45–55 kW
Conditioner Temperature & moisture adjustment 5–7 kW
Ring-Die Pellet Mill Core pellet-forming machine 100–120 kW
Counter-Flow Cooler Temperature reduction & hardening 11–15 kW
Vibrating Screener Remove fines & classify pellets 5–7 kW
Conveyors, Elevators & Dust Collection Material transfer & dust control 25–35 kW
Packaging Machine / Silos Weighing, bagging & storage 4–6 kW

✅ Total connected power ≈ 290–350 kW, matching scaled capacity requirements. Layout and equipment selection are optimized for New Zealand woody biomass feedstock, forestry residues, and local environmental & workplace standards.

🖼️ Process Flow Diagram

[RAW MATERIALS]
  Wood Chips + Sawdust
       │
       ▼
┌──────────────────┐
│  HAMMER MILL     │ → Grind to 3–5 mm
└─────────┬────────┘
          │
          ▼
┌──────────────────┐
│   DRYER          │ → Dry to 10–15% moisture
└─────────┬────────┘
          │
          ▼
┌──────────────────┐
│  CONDITIONER     │ → Heat & moisture adjust
└─────────┬────────┘
          │
          ▼
┌──────────────────┐
│  PELLET MILL     │ → Extrude at 120–160°C
│  (Ring Die)      │ → Ø6–8 mm pellets
└─────────┬────────┘
          │
          ▼
┌──────────────────┐
│   COOLER         │ → Cool to ambient temp
│  (Counter-Flow)  │
└─────────┬────────┘
          │
          ▼
┌──────────────────┐
│   SCREENER       │ → Remove fines (recycle ↑)
└─────────┬────────┘
          │
          ▼
┌──────────────────┐
│ PACKAGING / SILOS│ → Bags, bulk bags or bulk
└─────────┬────────┘
          ▼
   [FINISHED PELLETS]
   Biomass Fuel — NZ Standard
Created on：2026-08-10 11:17