Multi Raw Material Pellet Processing Plant for Energy in Austria

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Why Austria? 

Austria is a European leader in biomass energy:

Key drivers for blended pellets in Austria:

Target customers:

• District heating plants (testing phase first, then commercial)
• Industrial boilers
• Residential pellet stoves (premium segment)

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Raw Materials: A Proprietary Blend

The client’s raw materials come from two sources. The host company (a lignin extraction plant) supplies wood powder and lignin powder. Straw powder is purchased from local farms.

The client’s proprietary blend (developed at the university):

Why lignin is special: Lignin is a natural polymer that acts as a binder. When heated during pelletizing, lignin softens and glues the particles together. The client adds extra lignin powder (beyond what is naturally present in the wood) to improve pellet strength and combustion characteristics.

Raw material moisture: The host company’s wood powder and lignin powder are dry (8-12% moisture) from their drying process. Straw powder is sun-dried (10-15%). The client uses a dryer (steam from the 4-ton boiler) to reduce moisture further to <10%.

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The Site and Building (1,000m²)

The client’s facility is a single 1,000m² building leased from the host company. The building is steel-framed with 8m ceiling height.

Building layout (1,000m²):

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Equipment Configuration 

Equipment cost (FOB Qingdao): $285,000 USD (excluding boiler)

Why this configuration for multi-raw material blending (6 t/h, 15,000 tons/year):

1. 2 pellet mills instead of fewer large mills. This is a pilot/test facility, not a commercial production plant. The client runs different recipes (different blend ratios) and needs flexibility. With 2 small mills, they can run different settings on different mills simultaneously.

2. Double-barrel bag filter. Two dust collectors connected in parallel.

3. 4 t/h biomass test boiler. This is not for production heating — it’s for testing the client’s pellets. The boiler burns the pellets to measure combustion efficiency, emissions, and boiler performance. Excess steam is supplied to the host company.

4. No crusher or hammer mill. The raw materials are already powders — no size reduction needed.

5. Dryer (integrated with boiler). The client uses steam from the boiler for drying. This is a closed-loop system: boiler steam → dry raw material → pellets → boiler fuel.

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Process Flow 

This is a pilot-scale R&D fuel pellet plant. The process is simple but highly controlled.

Step 1: Raw Material Receiving

Trucks deliver wood powder, straw powder, and lignin powder. The client stores raw materials in bins in the 200m² raw material storage area.

Step 2: Blending

The client manually blends the three powders in the feed hopper. The hopper has a mixing auger to ensure uniform distribution.

The blending ratio (proprietary):

• 64% wood powder
• 23% straw powder
• 13% lignin powder

Step 3: Drying (Using Boiler Steam)

The blended material is dried using steam from the 4 t/h biomass boiler. The dryer reduces moisture from 10-15% to <10%.

Why drying matters: Lignin activation requires specific moisture (8-12%). Too wet, pellets are soft. Too dry, lignin doesn’t bind properly.

Step 4: Pelletizing

Dried blended material is fed into 2 biomass pellet mills.

Pellet mill parameters (each):

Pellet specifications (blended fuel pellets):

The lignin advantage: The added lignin increases calorific value (lignin has higher energy density than cellulose) and improves pellet durability.

Step 5: Dust Collection

Each pellet mill has a dust collection hood connected to two double-barrel bag filters. Dust is captured and returned to the feed hopper.

Step 6: Cooling (Natural)

Hot pellets (80-90°C) drop into the finished product bin and then to the 200m² finished product storage area. The client spreads pellets on the floor to cool naturally.

Step 7: Testing (The Boiler)

The client uses the 4 t/h biomass boiler to test their pellets. The boiler burns the pellets while instruments measure:

• Combustion efficiency
• Emission levels (particulate, NOx, CO)
• Ash characteristics
• Boiler heat transfer

The boiler has a bag filter and 35m stack

The symbiotic relationship:

• Boiler steam → host company for their lignin extraction process
• Host company supplies the client with raw material

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Utilities and Consumption

Electricity breakdown (annual, 300 days, 8 hours/day = 2,400 hours):

Water usage: 1,526 m³/year is high for a facility with only 25 staff. This includes boiler make-up water, cooling water, and possibly other uses. The boiler has a recirculating system; only blowdown is replaced.

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How RICHI Customized This Line for R&D and Multi-Raw Material Blending

The client had specific requirements that shaped the biomass pellet plant equipment design:

Requirement 1: Proprietary blend of three different powders (wood, straw, lignin). The client needed to blend them precisely and run different formulations.

RICHI solution: A simple manual blending system in the feed hopper with a mixing auger. The client blends small batches (500-1,000 kg) for testing, then scales up.

Requirement 2: This is a pilot R&D facility, not a commercial production plant. The client needed flexibility, not maximum throughput.

RICHI solution: 2 biomass fuel pellet machines instead of 1 large ones. Each mill can run different settings (die size, compression ratio). The client can run multiple recipes simultaneously.

Requirement 3: The client has a 4-ton test boiler. They needed the boiler to be integrated with the production line (steam for drying) but also operate independently for R&D.

RICHI solution: The boiler has its own fuel feed system (feeding self-produced pellets). Steam lines connect to the dryer, with valves to isolate for R&D tests.

Requirement 4: The client had 25 staff (20 living on site), no prior pellet production experience.

RICHI solution: Provided a 3-week on-site training program:

• Week 1: Basic safety, machine startup/shutdown, daily checks
• Week 2: Adjusting pellet mill settings for different blends
• Week 3: Boiler operation, emissions monitoring, data collection for R&D

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Product Specifications 

The client’s blended pellets meet Austrian standards for biomass fuel (ÖNORM M 7135), which is similar to ENplus.

Prices (research project — not yet commercial): The client’s pellets are currently for R&D only. Commercial price would be 200-240 EUR/ton for industrial customers.

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Market Outlook for Blended Biomass Pellets in Austria

Austria’s biomass pellet market is mature and export-oriented. Key drivers for blended pellets:

1. Raw material optimization. Blending straw (cheaper) with wood (more expensive) reduces production cost. Straw pellets alone have higher ash; blending with wood reduces ash content.

2. Lignin as a binder. Adding lignin improves pellet durability, allowing lower compression ratios and reducing energy consumption in the pellet mill.

3. R&D incentives. The Austrian government (FFG — Austrian Research Promotion Agency) funds biomass innovation projects. The client’s university collaboration qualifies for grants.

4. Carbon tax (€30/ton CO2). Pellets have lower carbon emissions than fossil fuels.

Competition: There are 200+ pellet producers in Austria (1,000-100,000 tons/year). The client’s 15,000 tons/year puts them in the mid-tier.

Challenges the client is managing:

The client’s breakeven point is 9,000 tons/year (60% capacity). At full capacity (15,000 tons/year), operating margin is about 15-20%. Payback on equipment ($485,000) is about 2.5 years.

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Why a Multi-Raw Material Pellet Plant Makes Sense in Austria

Austria has abundant biomass resources, a mature pellet market, and strong government support for renewable energy. Here’s why you should consider this market:

Raw materials are available. Wood powder from sawmills and lignin from bio-refineries are waste products. Straw is abundant.

Lignin is an underutilized resource. Lignin has high energy density and acts as a natural binder. Blending lignin with wood/straw improves pellet quality.

Austria has strong R&D support. Government grants, tax incentives, and university partnerships make innovation viable.

The market is large but competitive. To succeed, you need a differentiated product. Blended pellets can compete on price (lower raw material cost) or performance (higher efficiency).

If you’re considering a multi-raw material biomass pellet manufacturing plant in Austria (or any country with biorefineries), RICHI can help. We’ve designed lines for wood, straw, lignin, and other biomass blends. We understand R&D requirements (flexibility, data collection) and can recommend the right equipment for your budget.

Contact us to discuss your biomass pellet project. Tell us about your raw materials (type, moisture, volume), target products (blended or single-feedstock), site conditions, and budget. We’ll prepare a customized process flow, equipment list, and budget estimate — no obligation.

RICHI Machinery – Multi-raw material pellet plants from 0.2 t/h to 90 t/h. Shipping from Qingdao to Koper port (Slovenia) then overland to Austria: 20-25 days. Installation support available in Austria within 2 weeks.