2T/H Palm Kernel Pellet Machine in Ghana

The First Question Was Whether Pelletizing Added Enough Value

Palm kernel shell is already a recognized solid fuel. Research on palm-oil processing shows that shells and other palm residues are commonly reused for thermal energy, while Ghanaian studies have also evaluated PKS specifically for boiler and briquette applications.

That meant the customer could not justify the investment by saying, “PKS has no use until it becomes a pellet.”

The real value came from physical standardization.

Loose shell is hard, irregular, and relatively dense compared with many agricultural residues, but it still creates variation in bulk handling. Pelletizing gives the customer a more uniform fuel geometry that is easier to meter through certain screw feeders, conveyors, and automated fuel-handling systems.

For buyers located farther from the palm-processing area, densification can also simplify handling and storage compared with mixed shell fractions containing irregular pieces.

The Raw Material Comes from a Realistic Ghanaian Supply Chain

The customer sources PKS from palm oil processors in Ghana’s southern oil-palm belt rather than from one small village mill.

This is important because two MZLH420 palm pellet machines can consume a meaningful quantity of prepared shell when both operate together. The business therefore relies on contracts with several processors and aggregators.

Ghana’s palm-oil sector produces shell, fiber, and empty fruit bunch residues as part of normal milling activity. Published energy analysis for Ghana has estimated substantial technical energy potential from these residues, including palm kernel shell. 

The customer receives shell in different conditions depending on the supplier. Some lots are relatively clean and dry, while others contain fiber, kernel fragments, dirt, stones, or excess moisture.

Receiving inspection therefore became part of the fuel-quality system.

PKS Is Hard, but the Pellet Mill Does Not Process Whole Shell Indiscriminately

The MZLH420 is not used as a primary crusher.

Whole or oversized palm kernel shells are first reduced to a more uniform particle size before they reach the pelletizer. Magnetic and physical separation removes foreign material that could damage downstream equipment.

The customer uses its existing crushing system to break the shell into a finer feedstock suitable for ring-die compression.

This step is essential because a pellet mill performs most consistently when the material entering the forced feeder has controlled particle size and reasonably stable bulk density.

Moisture Is Measured Instead of Assumed to Be 8–10%

Palm kernel shell is often relatively dry compared with EFB, but incoming moisture is not fixed.

Storage conditions, rainfall exposure, processing method, and supplier practices can all change the moisture level.

The customer therefore checks each incoming lot before pelletizing.

Material that is too wet is dried. Material that is already within a workable range can bypass unnecessary drying.

This saves energy and avoids the opposite mistake of treating every tonne of PKS as though it needs the same preprocessing.

Why Two MZLH420 Units Were Better Than One Bigger Machine

The two-unit arrangement allows production to follow real shell supply and order volume.

One machine can operate during routine production periods. Both can run when the customer has accumulated enough prepared PKS and has confirmed industrial demand.

The second unit also reduces the risk that scheduled ring-die or roller maintenance will stop the entire pelletizing section.

That modularity was more useful than installing one larger machine that would spend long periods underloaded.

The Customer Standardized on 8mm Fuel Pellets

The original concept allowed 6–10 mm pellets, but the customer eventually standardized the main product around 8 mm.

This simplified die management and gave industrial buyers a more consistent fuel specification.

Pellet diameter is not chosen only for appearance. Smaller holes increase resistance and may reduce throughput. Larger pellets may suit different feeding systems but can change combustion behavior and mechanical strength.

The 8 mm configuration therefore reflects this project’s handling and combustion requirements rather than a universal PKS pellet standard.

Ring-Die Compression Had to Match a Hard Shell Feedstock

Palm kernel shell does not behave like rice straw or sawdust.

It is harder, denser, and can contain residual oil and mineral contamination. These characteristics affect friction inside the die and wear on compression components.

The customer therefore did not copy a wood-pellet compression ratio.

During commissioning, the ring-die specification was adjusted around motor load, throughput, pellet durability, and die temperature.

If compression is too high, the machine consumes unnecessary power and output falls. If it is too low, the pellets can fracture during cooling and transport.

Residual Oil Is Controlled Rather Than Treated as an Advantage

Palm kernel residues may contain small amounts of residual oil depending on how the material was processed.

A limited amount can influence fuel value and pellet formation, but excessive oil is not automatically beneficial.

High surface oil can reduce friction unpredictably, affect pellet strength, increase residue buildup, and change storage behavior.

The customer therefore evaluates material condition rather than marketing “slightly oily PKS” as universally ideal for pelletizing.

Fuel Quality Is More Than Calorific Value

PKS is attractive as a fuel because it can have a relatively high heating value. One recent field-scale study used an estimated lower heating value of about 4,358 kcal/kg for PKS in a palm-mill boiler application. 

But the customer does not sell every pellet batch using one guaranteed energy number.

Actual fuel performance depends on moisture, ash, shell purity, residual kernel content, and contamination.

Representative batches are therefore checked for parameters such as moisture, ash, calorific value, bulk density, and mechanical durability before long-term supply agreements are signed.

PKS Pellets Are Not Automatically Suitable for Every Domestic Stove

The original project concept targeted both industrial and household users.

The commercial focus was narrowed to industrial thermal applications.

This is a more defensible market position because PKS can behave differently from standardized wood pellets in combustion systems. Research on PKS combustion has shown that boiler performance and slagging or emission behavior depend heavily on combustion conditions and equipment design. 

The customer therefore supplies buyers that understand agricultural-residue fuels and can evaluate the pellets in their own boilers.

Household stove sales are not used as the main justification for the project.

Cooling and Screening Are Essential after the Pellet Mill

Pellets leaving the MZLH420 biomass pellet mill are warm and not yet ready for bulk storage.

They first pass through the customer’s cooling equipment so that temperature and moisture stabilize.

The cooled pellets are then screened to remove fines and broken material.

Clean reusable fines can be returned to production where appropriate.

This improves handling quality for the final industrial customer and reduces dust during loading and storage.

The Project Did Not Add Cocoa Shell, Coconut Shell, and Wood Just to Show Versatility

The MZLH series can be configured for several biomass materials, but this Ghana project is dedicated to PKS fuel.

Changing from palm kernel shell to cocoa husk, coconut shell, or wood residues would require different grinding, moisture control, die settings, and possibly different fuel-quality specifications.

The customer therefore keeps the production logic narrow.

This improves repeatability and makes raw-material procurement easier to manage.

The Main Bottleneck Became Shell Procurement, Not Machine Capacity

At a combined reference output around 2.2 T/H, six net production hours would require more than 13 tonnes of prepared shell in one day.

That means two MZLH420 units only make sense when the customer can aggregate PKS from several mills or larger processors.

The customer therefore tracks contracted shell volume before considering any additional pelletizer.

This is a more useful expansion metric than simply saying “market demand is growing, so another machine will be added next year.”

Why the Western Region Was a Logical Operating Base

Ghana’s southern and western zones are closely associated with oil-palm cultivation and processing, giving a biomass operator in the Western Region better access to PKS than an inland location far from palm mills.

That proximity reduces the cost of moving a relatively low-value residue before densification.

The business becomes much less attractive if the customer has to haul loose shell long distances before any value is added.

The Equipment Was Shipped through Takoradi

The two MZLH420 palm biomass pellet machine units were exported from Qingdao Port in China to the Port of Takoradi.

For a Western Region project, this route is practical because Takoradi serves industrial cargo on Ghana’s western coast and reduces unnecessary inland movement compared with routing the equipment farther east and trucking it back.

Before shipment, RICHI provided equipment dimensions, electrical information, foundation requirements, feeder and discharge interface data, and recommended service clearances.

This allowed the customer to prepare the installation area while the machines were in transit.

Commissioning Focused on Stable Power Load

The first trials did not aim immediately at 1.2 T/H per machine.

Operators began with one MZLH420 and monitored main-motor current, feed consistency, die temperature, pellet surface condition, and fines after cooling.

Feed rate was increased only after the shell preparation and compression conditions became repeatable.

The second unit was commissioned after the first machine had established a stable operating window.

What the Customer Learned from the First Production Period

“We originally thought PKS would be easy because it is already a hard fuel. The real challenge was preparing it consistently. Shell from one supplier can be clean and dry, while another load has more fiber and dirt. Once we tightened our incoming-material specification, both pellet mills became much easier to run at the same settings.”

The company now sorts suppliers partly by shell consistency rather than only by purchase price.

Cheap PKS with high contamination can create more crushing cost, more wear, more ash, and less usable finished fuel.

The Business Case Is Densification, Not Waste Disposal

Calling PKS a “waste problem” understates its existing value.

Palm kernel shell is already used as an energy resource in palm-processing systems, and Ghana-focused research has demonstrated its suitability for densified biomass fuels as well. 

The customer’s opportunity comes from producing a more standardized fuel for buyers who value uniform size and feeding behavior.

That is a stronger commercial argument than claiming pelletization suddenly makes an otherwise useless material valuable.

Palm Kernel Pellet Machine in Ghana for Industrial Biomass Fuel

This palm kernel pellet machine in Ghana project is a focused densification application built around a real oil-palm residue and an industrial fuel market.

Two MZLH420 machines, each with a 90 kW main motor, 3 kW arch-breaking feeder, and 1.5 kW forced feeder, provide approximately 1.0–1.2 T/H of reference capacity per unit. The customer standardizes the main product at 8 mm.

The machines only perform well when the surrounding process is equally controlled. PKS must be sourced consistently, cleaned, reduced to the correct particle size, checked for moisture, fed evenly, compressed with the correct die specification, cooled, screened, and tested before dispatch.

For another customer evaluating a palm kernel pellet machine in Ghana, RICHI Machinery would first calculate available PKS volume, supplier consistency, shell moisture, contamination, crushing requirement, target pellet diameter, industrial boiler specification, daily operating hours, cooling and screening capacity, electrical supply, and confirmed annual fuel demand before deciding whether one MZLH420, two units, or a larger configuration is appropriate.

That is what determines whether pelletizing adds real value: not simply the fact that Ghana produces palm kernel shell, but whether the customer has enough consistent shell and a buyer that benefits from the more uniform fuel form.