3 T/H Wood Pellet Plant in Portugal

RICHI MACHINERY

The Feedstock Specification Removed the Dryer

The customer had spent more than a decade trading timber and knew the Leiria furniture cluster well. The project started when he secured several regular sources of kiln-dried offcuts and dust that were clean enough for fuel-pellet production but too fragmented for higher-value woodworking.

An existing 2,000 m² industrial building already provided concrete floors, grid electricity, water and truck access. That made a compact no-dryer layout more useful than a larger greenfield design.

The first engineering question was whether a 3 T/H sawdust pellet plant in Portugal could remain stable without thermal drying. Moisture tests on repeated samples answered that question: accepted furniture residues were consistently around 8–12%.

The second question was contamination. Only clean solid wood and uncontaminated sawdust are accepted. Painted pieces, MDF, laminated panels and adhesive-rich boards are excluded before they reach the chipper or hammer mill.

The final wood pellet making line therefore uses one MZLH678 press, forced cooling and screening, while supplier moisture control replaces a thermal dryer.

RICHI MACHINERY

20,000 Tons of Dry Residue Are the Purchasing Ceiling

The customer maintains supply agreements with several furniture and wood-processing factories within roughly 50 km of Leiria. The annual purchasing ceiling is about 20,000 tons, but actual production is scheduled against accepted moisture, contamination and finished-pellet orders.

The incoming material is not accepted simply because it is “waste wood.” Loads are checked for coatings, glue, plastic, metal and moisture. This keeps the industrial wood pellet plant in Portugal tied to a defined clean-wood feedstock rather than a mixed construction-waste stream. The customer also separates suppliers by residue type so one delivery of dusty sanding fines does not change the bulk density of an entire day’s feed. This matters for hopper flow, hammer-mill load and pellet-mill amperage even when the moisture reading looks acceptable.

At the scheduled operating time and the 2.5–3.0 T/H MZLH678 range, annual gross pellet output is planned around 17,000–18,000 tons. The difference between available residue and saleable pellets covers unused purchasing headroom, screening rejects, moisture variation, maintenance and inventory carryover.

RICHI MACHINERY

No Dryer Means Moisture Control Moves to Receiving

A no-dryer route is only economical when moisture is controlled before material enters the plant. This project does not assume that all Portuguese sawdust is dry; it buys specifically from factories processing kiln-dried timber.

The customer therefore spends more effort on supplier qualification and covered storage instead of on thermal drying.

The operating rules are simple:

• Accept only clean residues from factories using kiln-dried solid wood
• Check incoming moisture and segregate material above the plant’s normal 8–12% window
• Keep raw material and finished pellets under cover so Atlantic weather does not add moisture back into the process

The trade-off is that the plant depends on a disciplined dry-feedstock network. If suppliers begin delivering wetter sawdust, the project would need either off-site drying, longer natural conditioning or a future dryer investment. Covered storage is therefore part of the process design. If dry offcuts are left exposed to rain or coastal humidity, the project can lose the very advantage that justified removing the dryer. A no-dryer line needs stricter receiving discipline than a plant with spare thermal capacity.

That is the real value of the no-dryer design: lower process complexity only because feedstock quality is controlled upstream.

RICHI MACHINERY

One MZLH678 Matches the 3 T/H Line

Equipment price (EXW Qingdao port): approximately US$85,000

The client bought the wheel loader and forklifts locally in Portugal – cheaper than importing, and local service is available.

Shipping: Four 40-foot containers. Departed Qingdao September 15, 2023. Arrived Port of Leixões, Portugal (near Porto) on October 28, 2023. Sea freight: $6,200 USD. Inland trucking to Leiria (about 150km) added $1,200 USD.

RICHI MACHINERY

A 2,000 m² Building Favors a Horizontal Flow

The client’s building was already standing – a former warehouse on a 2,000m² plot. Total built area 2,000m². We divided it into zones.

RICHI MACHINERY

Five Stages From Dry Offcut to Finished Pellet

The process stays short because drying is removed, not because cooling or contamination control are optional. Material movement is kept in one direction through coarse preparation, fine grinding, pelleting, cooling and packing. The compact route reduces recirculation and makes it easier for operators to identify where a moisture, particle-size or fines problem entered the product.

Step 1 – Coarse size reduction
Large clean offcuts are chipped to a manageable intermediate size. Fine sawdust and shavings can bypass this stage when they already meet the downstream feed requirement.

Step 2 – Fine grinding
The hammer mill reduces prepared wood to a consistent particle range before the MZLH678. Screen selection is adjusted to material density and pellet quality rather than fixed by one nominal number.

Step 3 – Pelleting
The MZLH678 wood granulator machine produces about 2.5–3.0 T/H depending on feedstock density and die condition. Standard finished diameters are 6 mm and 8 mm.

Motor load, feed rate and die condition are used to control compression. The line does not rely on unsupported “pressure tonnage” claims as a quality specification.

Step 4 – Cooling and screening
Fresh pellets enter forced cooling before fines are screened and returned to the process where suitable. Hot pellets are not sent directly into retail bags or long-term storage.

Step 5 – Packing and dispatch
Cooled pellets can be supplied in retail bags or bulk packaging according to customer orders. Export and domestic sales are planned from confirmed contracts rather than a fixed 70% export assumption.

RICHI MACHINERY

Dust Control Replaces Dryer Exhaust as the Main Air Issue

With no thermal dryer, the main routine air-emission source is dry wood dust from chipping, grinding and transfer. The pulse bag filter is therefore treated as production equipment, not an optional environmental add-on. Pickup hoods are positioned where material is dropped, crushed or transferred, and filter condition is checked against pressure loss rather than visible dust alone. This is particularly important with dry furniture sawdust because the same low moisture that helps pelleting can increase airborne fines during handling.

System design:

• Collection hoods at dust sources
• Pulse-jet cleaning system
• Collection efficiency: 95% at pickup points

Calculated emissions:

• Total dust generated: very low (material is already dry and clean)
• Fugitive dust settles inside the workshop

The chipper and hammer mill are not fully sealable, so some fugitive dust escapes. The client keeps the workshop doors closed and the dust collection system running at all times. Portuguese inspectors have visited twice – no violations.

RICHI MACHINERY

Quality Specification Comes Before Certification Claims

Where the customer targets residential heating or certified export channels, pellet quality has to be tested against the buyer’s required standard. Certification is not assumed merely because the raw material is clean wood. For buyers targeting heating markets, laboratory data and traceable clean-wood sourcing are more useful than marketing language. The plant can adjust die diameter and packing format, but ash, moisture, durability and fines still have to be demonstrated on the actual production batch.

• Pellets diameter 6mm ±1mm
• Length 3.15-40mm
• Bulk density ≥600 kg/m³
• Durability ≥97.5%
• Fines ≤1%
• Moisture ≤10%
• Ash ≤0.7%
• Net calorific value ≥16.5 MJ/kg

The line is capable of producing 6 mm heating pellets and 8 mm industrial pellets, but any ENplus claim must follow completed certification and laboratory verification. The process therefore focuses first on moisture, fines, durability, ash and contamination control.

Commercial pricing is handled through actual contracts. The page does not assume that a certification label automatically doubles pellet value in Germany or France.

RICHI MACHINERY

Leiria Links Furniture Residues With Heating-Fuel Demand

Portugal already has an established wood-pellet industry, so a small producer is entering a real market rather than creating one from scratch. For this project, the stronger local advantage is the Leiria furniture and wood-processing base combined with road access to domestic customers and Atlantic ports. A 3 T/H producer cannot compete with large export mills on scale alone. Its advantage is a short sourcing radius, lower process complexity and the ability to serve regional orders without holding months of finished inventory. Freight, certification and bagging strategy are therefore treated separately for each customer segment.

• A large furniture industry generating abundant waste wood
• Established export routes to Germany, France, and Italy
• Growing domestic demand for biomass heating

Target customers include pellet distributors, commercial heating users and industrial biomass consumers that can accept the project’s verified specification.

• Regional pellet distributors serving central Portugal
• Industrial and commercial heating users requiring bulk deliveries
• Export traders only where certification, specification and freight terms are confirmed

Expansion should follow secured feedstock and sales rather than an assumed jump to 10 T/H. A second line would require fresh checks on raw-material contracts, transformer capacity, cooling, packing and storage.

RICHI MACHINERY

The Operating Lesson Is Supplier Discipline

Early operation highlighted three decisions that matter more than headline pellet price: Maintenance planning also changed after startup. Screen wear, die condition and moisture drift are logged together so operators do not automatically blame the pellet press when throughput falls. This reduces unnecessary die changes and helps the team distinguish a raw-material problem from a mechanical problem.

What proved useful:

• Buying dry furniture residues removes a major thermal stage, but only while supplier moisture remains controlled
• Separating certified-quality ambitions from ordinary industrial sales keeps product claims aligned with actual testing

What needs continuous attention:

• Packaging speed should be increased only when retail orders justify an automatic scale
• Dust pickup points need periodic balancing as screens and production rates change
• Incoming moisture should be measured routinely instead of relying on supplier declarations

RICHI MACHINERY

RICHI Scope Focused on a No-Dryer Layout

For this 3 T/H wood pellet manufacturing plant in Portugal, the supplied scope centered on dry-feedstock handling and a compact production route:

• Process design – Simple, minimal-equipment layout.
• Equipment package – Crusher, hammer mill, pellet mill, dust collection system.
• Installation supervision – Our engineer spent 12 days in Leiria.
• Operator training – Three days on die changes, gap adjustments, and ENplus quality requirements.
• Spare parts kit – Two spare dies, five sets of hammer mill screens, bearings, belts, and filter bags.
• ENplus consulting – We helped the client understand the certification requirements and adjust his process to meet the standards.

RICHI MACHINERY

When a No-Dryer Pellet Plant Makes Sense in Portugal

A no-dryer biomass pellet plant in Portugal should be selected only after repeated moisture tests confirm that the accepted wood stream can remain inside the pelleting window through the year. Buyers should also compare the value of dry residue against the cost of adding thermal drying. If the dry-material premium becomes too high or suppliers cannot hold moisture through winter, the economics can reverse. The correct plant concept therefore depends on a year-round moisture record, not one dry summer sample.

• Pay for feedstock quality when it removes a process stage. Dry clean offcuts can justify a higher delivered cost if they eliminate continuous thermal drying.
• Treat certification as a verified market requirement. Do not design the commercial case around a label that has not yet been obtained.
• Simple does not mean incomplete. Cooling, screening, dust collection and covered storage remain necessary even when the dryer is removed.
• Keep sourcing radius short. The Leiria furniture cluster is valuable because residue, factory and customers can remain within manageable transport distances.

The project works because feedstock condition, machine capacity and operating hours are matched. It is not a generic export-pellet template.

For a similar wood pellet plant construction project in Portugal, provide monthly clean-wood tonnage, moisture range, largest offcut size, working hours and target pellet specification before the MZLH model is finalized.