Biogas Pre-Processing · Grass & Straw Shredder
Napier Grass Shredder
Grass & Straw Shredder
Shreds Napier grass, rice straw, corn stalks and other high-fibre feedstock down to a uniform particle size before it reaches the digester — the same fibrous material that resists breakdown and slows biogas output when fed in whole. A compact, wheeled unit sized for farm and biomass-unit installation rather than a fixed processing line.
- Feed inlet
- 500 × 1150 mm
- Throughput
- 1.5 – 2 t/hr
- Power
- 20 HP
- Speed
- 1470 rpm
What it’s for
Built for Fibrous Feedstock
High-fibre material — Napier grass, rice straw, corn stalks — resists the breakdown that digestion depends on, and feeds unevenly when left whole. A chain-fed hopper carries material into a chamber of 48 double-edged blades and 2 double-edged chopping knives, reducing it to a consistent particle size at up to 2 tonnes an hour.
The compact, wheeled frame fits into a farm or biomass-unit installation without dedicated processing-line space, is simple and user-friendly to run, and is built for minimal maintenance under continuous agricultural use.
Construction
How It’s Built
Specifications
Technical Data
- Model
- PN-1.5-20
- Machine body (L × W × H)
- 1350 × 1750 × 1280 mm
- Feed inlet (W × L)
- 500 × 1150 mm
- Chain width
- 155 mm
- Double-edged blades
- 48
- Double-edged chopping knives
- 2
Dimensions
Cutting assembly
- Production efficiency
- Approx. 1.5 – 2 t/hr
- Rotational speed
- 1470 rpm
- Power
- 20 HP
- Motor voltage
- 380 – 415 V, 50 Hz, 3-phase
Performance
Rating
Applications
Where It’s Specified
Reduces Napier grass, rice straw and other high-fibre biomass to a uniform particle size before it reaches the digester, where whole fibrous material would otherwise resist breakdown and slow gas output.
Sized output for composting units handling high-fibre green waste and crop residue.
Processes farm residue — straw, stalks and cut grass — on site rather than trucking it elsewhere for disposal.
The same uniform particle size suits biofuel and biomass processing lines, and animal feed preparation.
Common questions
Frequently Asked Questions
What feedstock can it handle?
High-fibre organic material such as Napier grass, rice straw and corn stalks — feedstock that resists breakdown and would otherwise slow digestion if fed whole.
What throughput can we expect?
Approximately 1.5–2 tonnes an hour, at 20 HP and 1470 rpm, through 48 double-edged blades and 2 double-edged chopping knives.
Does it need a dedicated processing line?
No — it’s a compact, wheeled unit sized for farm and biomass-unit installation, not a fixed processing line.