4 T/H Industrial Wood Pellet Plant in Vietnam

RICHI MACHINERY

What the Boiler Customer Actually Buys

Industrial fuel contracts are won on more than pellet appearance. The customer’s feeding system, ash-removal equipment and available storage influence the product and delivery arrangement.

Heat user	Receiving area	Purchase consideration
Textile steam	Da Nang area	Boiler fuel trial
Food processing	Central Vietnam	Consistent moisture
Timber drying	Woodworking districts	Ash handling
Brewing and distilling	Regional deliveries	Stable fuel feeding
Supply planning	Local routes	Orders within available output

A textile plant running a steam boiler may prefer regular bulk loads, while a smaller food processor may need bags it can handle without a bulk store. The production line serves both routes. The product specification travels with the order, giving purchasing staff and boiler operators the same information about moisture, ash and fines.

The receiving arrangement separates four usable wood streams:

Stream	Handling	Acceptance	Preparation
Clean solid offcuts	Covered bay	Untreated solid wood	Primary reduction
Furniture offcuts	Separate loads	Clean solid wood	Chip and grind
Clean sawdust	Enclosed storage	Measured moisture	Screen and grind as needed
Packaging timber	Inspected pieces	No preservatives or heavy contamination	Metal removal before cutting
Accepted supply	Batch identification	10–14% press-feed moisture	Wet loads held separately

Clean solid wood is the foundation of the fuel route. Painted pieces, preservative-treated timber and laminated panels are kept out, even when they are inexpensive to collect. A magnet can recover a nail; it cannot turn chemically treated timber into clean wood fuel. This distinction protects the customer’s furnace as well as the pellet equipment.

RICHI MACHINERY

Put Receiving Space Ahead of the Press Room

The workshop has about 8 m of clear height for the process equipment and maintenance access. Conveyors connect the separate preparation and pressing areas; truck circulation remains outside the production building.

The indoor arrangement assigns space by process duty:

Zone	Area (m²)	Duty	Position
Primary reduction	250	Inspection and chipper	West
Grinding	250	Hammer mill and buffer	Centre
Pelleting and cooling	100	Press, cooler and screen	Centre-east
Warehouse	800	Separated raw wood and finished stock	East
Office and staff facilities	100	Quality checks and shift support	Separate allocation

The five indoor allocations total 1,500 m². Their areas include local access aisles; the remaining site serves covered receiving, vehicle turning, utility equipment and separation around the building.

The 800 m² warehouse is divided into 450 m² for accepted dry wood, 300 m² for finished bags and 50 m² for packaging supplies. Partitions, clear aisles and separate handling positions keep raw stock away from released pellets.

Covered receiving and short delivery intervals suit a processor buying dry woodworking residues. Wet sawdust does not enter this no-dryer line: it needs a separate drying route or must be returned to the supplier.

Equipment	Quantity	Main drive	Process duty
RICHI primary wood reduction unit	1	90 kW	Inspected solid offcuts
RICHI wood pellet hammer mill	1	132 kW	Fine preparation
RICHI MZLH420 wood pellet mill	1	280 kW	Pelleting
Extraction systems	2 groups	Fan duty matched to ducts	Dust capture
Weighing and bag closing	1 line	Matched to packing duty	At least 200 × 25 kg bags/h
Conveying package	1 coordinated set	Selected by route	Enclosed transfers
Counterflow cooler and screen	1 set	Selected for at least 5 T/H	Cool and remove fines

RICHI’s equipment scope combines primary reduction, fine grinding, MZLH768 press and downstream cooling, screening and weighing. Feeders and transfers are selected as part of the package, so the customer receives a connected production route.

Each main section solves a different material problem:

Solid wood preparation. A 90 kW chipper handles inspected offcuts. Sawdust bypasses chipping; the cutting schedule follows the proportion of solid pieces in the incoming blend.

Fine grinding. A 132 kW hammer mill prepares the chips and oversized sawdust. A 4–6 mm screen is a starting selection; fibre character and sieve results establish the setting that feeds pelletizer steadily.

Parallel pressing. One MZLH768 machine. The upstream preparation route and downstream cooler are selected for at least 5 T/H under the specified dry-material conditions.

A dry-material route. The process is arranged for press feed around 10–14% moisture. Covered supply and receiving are therefore part of production, particularly when rain can change the condition of sawdust within a single delivery cycle.

RICHI MACHINERY

How the Wood Becomes Bagged Fuel

Receiving with a Separate Sawdust Route

A solid-wood load goes to the inspection and primary reduction area. Clean sawdust follows a shorter route through screening and metal control, avoiding a machine intended for larger pieces.

Keeping the streams identifiable also makes blending easier. The operator can respond to a change in wood type or moisture before it affects press, rather than trying to correct an inconsistent mixture at each die.

Material excluded from the accepted stream includes:

• Painted, coated, laminated or preservative-treated timber
• Pieces carrying heavy metal contamination or mixed construction debris
• Wet or mouldy material unsuitable for the dry-feed route

Supplier feedback is specific: contamination, moisture or unsuitable dimensions. Over time, that information helps procurement secure more useful tonnes per delivery and reduces handling of material that will never become saleable fuel.

Chipping Solid Offcuts

The cutting stage changes the dimensions of the wood before fine grinding. A steady feed places less uneven demand on the downstream equipment than alternating between large empty gaps and heavy surges.

The primary unit receives inspected pieces through its controlled infeed. Knife access and the discharge route remain clear for routine service.

The cutting arrangement provides:

• An inlet matched to accepted piece dimensions
• Accessible knives, bearings and inspection points
• Chip preparation suited to the hammer mill

Metal removal is positioned before vulnerable machinery. Recovered nails and other foreign matter leave the production circuit, while accepted chips move into the grinding stage without being mixed back with receiving rejects.

Grinding for Consistent Press Feeding

Fine grinding brings chipped offcuts and suitable small residues toward the same pressing condition. A buffer between preparation and the presses absorbs short interruptions without requiring an oversized pile of loose powder on the floor.

The grinding section is organized around these duties:

Item	Operating basis
Material	Clean wood chips and screened sawdust
Main motor	132 kW
Screen	4–6 mm starting selection
Feed control	Motor-load regulated
Inspection	Screen, hammers and bearing condition
Line balance	Buffer feeds press

The prepared wood is assessed by its actual particle character:

Fraction	Assessment	Action
Fine particles	Useful within a balanced feed	Avoid excessive dust
Main fraction	Consistent small particles	Maintain steady feeding
Long fibres	Check by sieve and inspection	Adjust preparation
Oversize	Unsuitable for uniform pressing	Return to grinding

Aspiration assists the hammer mill and contains process dust. Clean recovered wood fines have a controlled return point, keeping useful material in production while avoiding an uncontrolled return of dirt from the receiving area.

Forming Nominal 8 mm Pellets

Ground wood enters the press through controlled feeders. The operator can see how each machine is loading, making uneven distribution or a worn die easier to identify before the whole production rate falls.

The press group uses the following configuration:

Parameter	Configuration	Operating significance
Model	MZLH768	RICHI wood pellet press
Die holes	8 mm	Nominal pellet diameter
Main motor	280 kW	One machines
Die selection	Matched to tested wood blend	Compression set for material
Feed moisture	About 10–14%	Measured before pressing
Combined duty	4 T/H	One press operating

Product release focuses on the properties the customer receives:

Property	Product target	Role
Diameter	Nominal 8 mm	Fuel feeding
Length	10–30 mm	Conveying
Moisture	8–12% after cooling	Storage
Particle integrity	Intact formed pellets	Handling
Bulk density	600–700 kg/m³ target	Delivery
Durability	Buyer contract specification	Fines control
Ash	Feedstock analysis	Boiler suitability
Heating value	Declared laboratory basis	Fuel purchasing

Seven net running hours at the nominal duty produce 28 tonnes per shift. At 12% incoming and 10% finished moisture with 2% dry-solids loss, this requires about 29.2 tonnes of accepted wood. Purchasing and dispatch are scheduled around that material balance.

Cooling Without Occupying the Warehouse Floor

Pellets leaving the dies carry heat into the counterflow cooler. Controlled airflow passes through the pellet bed while the discharge arrangement keeps the flow moving toward screening.

The cooler removes heat while production continues. Product is released to packing at no more than about 5°C above ambient, with moisture checked separately rather than assumed from temperature.

Temperature and moisture are considered together before packing. In humid weather, protecting cooled pellets from condensation and rain is just as important as removing heat at the cooler.

Packing for Bulk Users and Bag Customers

The screen removes loose fines before the weighing station. The bagging area is kept clear of incoming wood handling, so the appearance of the finished product reflects the care taken through the process.

The bagged route follows four simple steps:

1. Position a suitable 25 kg bag at the filling spout
2. Weigh the pellet quantity automatically
3. Close the bag and identify its production batch
4. Transfer the bags to stable, accessible pallets

A fully bagged 4 T/H stream requires 160 bags/hour at 25 kg. The complete filling-and-closing route is selected for at least 200 bags/hour, giving the operators time for bag changes without making packing the normal bottleneck.

RICHI MACHINERY

Power for Preparation, Pressing and Dust Control

Utility	Main users	Design basis	Control
Electricity	Presses and preparation	Nameplate and demand schedule	Submeter production
Water	Staff and housekeeping	Separate from dry process	Keep stock dry
Loader fuel	Receiving and dispatch	Vehicle duty cycle	Log operating hours

The connected-load schedule distinguishes motor ratings from electricity consumption:

Group	Connected kW	Duty pattern	Selection check	Operating control
Chipper	90	Intermittent offcut runs	Accepted piece size	Metered infeed
Hammer mill	132	During preparation	At least 5 T/H on qualified feed	Sieve and load checks
Wood pellet mill	280	One working presses	4 T/H line duty	Individual current display
Extraction	30	With associated equipment	Airflow and pressure losses	Filter differential pressure
Cooling, conveying and packing	25	With pellet production	At least 5 T/H transfer duty	Level and temperature interlocks
Lighting and office	5	Occupied hours	Separate support circuits	Section metering
Total	642	Connected-load basis	Starting and demand study	Meter actual electricity use

Chipping, grinding and the main press motors total 280 kW. With a 60 kW allowance for extraction, cooling, conveying, packing and support, the connected-load basis is 642 kW. This is not an hourly energy-use claim.

The electrical package is arranged for the site’s confirmed three-phase 50 Hz service. Sequential starting and appropriate drive controls limit simultaneous starting demand; the utility and electrical designer determine the connection and transformer rating.

RICHI MACHINERY

A Workshop That Is Easier to Operate and Maintain

Wood handling creates dust at particular locations: cutting, grinding, transfers and packing. Local extraction concentrates on those locations, with access for cleaning and filter service built into the arrangement.

Dust collection. Enclosed transfers and local extraction serve cutting, grinding and pressing. Combustible-dust assessment determines separation, isolation and explosion protection; a filter alone is not a complete protective system.

Water and drainage. The dry process has no steam-conditioning or washing stage. A domestic and housekeeping allowance of 1–2 m³/day is separate from fire-water storage and any future drying equipment.

Air movement. The extraction system is selected as a connected circuit of hoods, ducts and filters. A fan motor alone does not define how well each pickup point works.

Noise and access. Stable machinery support and suitable enclosures improve the working environment without blocking the access needed for knives, screens, dies and bearings.

Material recovered or removed during production follows defined routes:

Stream	Segregation	Destination
Clean process fines	Identified wood stream	Controlled return
Oversize wood	Accepted material only	Further reduction
Recovered metal	Separate container	Approved scrap route
Used oil	Sealed labelled container	Authorized collection
General refuse	Away from product	Local collection service

RICHI MACHINERY

The Details Behind a Dependable Supply Package

The strongest reason to buy the line as a coordinated package is the relationship between its stages. A press performs best when preparation feeds it evenly and the downstream route can carry away its output.

Covered raw stock. The wood store uses measured bulk density and safe stack limits to hold a two-to-three-day working buffer; incoming deliveries replenish it through the week.

The existing workshop keeps construction outside the main spending burden. The complete scope still includes continuous cooling, extraction and fire-protection interfaces, because these are necessary parts of operating the line.

Different incoming dimensions. The separate sawdust path gives the operator flexibility without burdening the chipper with material that does not need cutting.

That flexibility is practical at receiving: suppliers can deliver clean offcuts or loose residues, while the line brings them toward a common pressing specification.

A manageable operating team. Ten positions cover supervision and quality, receiving and loading, preparation, press operation, packing and maintenance across the single shift.

Machine-specific instruction covers:

• Start-up order, interlocks and normal operating observations
• Safe knife, screen, die and roller service
• Clearly identified controls and Vietnamese operating information

Training connects a symptom to the right part of the line. Rising press current, for example, may begin with changing wood moisture or uneven feeding rather than a mechanical defect in the press itself.

Supplier variation. Keeping incoming batches identifiable gives the operator a practical way to adjust the mix and trace a change in pellet behaviour.

The receiving position combines:

• Metal removal ahead of cutting and grinding
• Visual inspection while pieces are still identifiable
• Moisture measurement beside a separate hold area

RICHI MACHINERY

A Fuel Specification That Supports Repeat Orders

An industrial fuel customer needs a product description that can be used at receiving. Nominal pellet size, moisture, ash, heating value and handling strength provide that common basis between the producer and the boiler operator.

Property	Specification basis	Production stage
Diameter	8 mm nominal	Die selection
Length	10–30 mm	Cutting and screening
Moisture	8–12% target	Cooling and storage
Bulk density	600–700 kg/m³ target	Finished product
Ash	Qualified wood blend	Material acceptance
Heating value	Laboratory declaration	Product qualification
Durability	Handling specification	Pelleting and cooling
Fuel chemistry	Customer’s boiler limits	Material qualification

Packing choices serve different delivery arrangements:

Format	Handling	Order information
Bulk	Protected vehicle loading	Vehicle capacity and unloading system
25 kg bags	Palletized stock	Bag count and delivery frequency

Supply discussions connect product properties with the customer’s operation:

Buyer need	Plant response	Agreement detail
Fuel consistency	Batch quality checks	Moisture and ash limits
Delivery continuity	Production and stock schedule	Order lead time
Traceability	Supplier and batch records	Product identification

For a nearby user, smaller repeat deliveries can reduce the stock held beside the boiler. For the producer, a regular delivery schedule makes production and packing easier to organize. This is a practical commercial advantage when the line, warehouse and vehicle route are planned together.

RICHI MACHINERY

Building a Local Industrial Customer Base

This configuration serves industrial heat users reachable by regular road deliveries from the Da Nang area. Procurement concentrates on clean dry woodworking residues; the business does not depend on securing export contracts before it can sell its output.

Three features support that local position:

Boiler compatibility. Fuel samples and an agreed trial connect the pellet specification with the customer’s actual feeding and combustion equipment.

Consistent deliveries. Covered stock, controlled pressing and continuous cooling support repeat orders through changing weather and material batches.

Flexible dispatch. Bagged and bulk routes let the producer serve customers with different storage and unloading arrangements.

Procurement and sales need to grow together. A new fuel contract is useful when enough accepted dry wood is available to fulfil it, not simply when nominal press capacity appears spare.

The operating plan addresses these recurring constraints:

Constraint	Operating response
Competition for clean offcuts	Qualify several suppliers and record accepted tonnes
Wet-weather material	Covered receiving and moisture-based acceptance
Customer storage limits	Align delivery lot size with consumption

A customer’s repeat order is the useful test of this production route: the pellets arrive in the agreed form, feed through the receiving system and match the fuel specification established at the start of the relationship.

RICHI MACHINERY

Specify Your Industrial Wood Pellet Plant in Vietnam

RICHI Machinery can develop the equipment package from the material you collect and the fuel your boiler customers need. Offcut dimensions, sawdust condition and monthly availability establish the preparation route; the buyer’s receiving system defines the finished specification.

• Show the incoming wood. Photos and representative samples reveal preparation needs that a generic raw-material name cannot describe.
• Include wet-weather conditions. The highest moisture encountered in normal supply is more useful for process selection than a sample collected only in dry weather.
• Choose the operating pattern. Required tonnes per shift determine the number of working presses and the downstream handling rate.
• Plan the delivery route. Customer storage and truck access influence whether bagging, bulk loading or both should be included.

Request a wood residue pellet production line proposal covering preparation, pressing, cooling and dispatch. RICHI can align the wood pellet production line with your workshop and electrical supply, including the interfaces between each machine.

For a useful wood pellet plant cost quotation, send the material types, moisture range, site drawing and required output. The response can separate the biomass pellet equipment scope from local installation work so that competing quotations can be compared on the same basis.

Send your workshop dimensions and wood supply details to RICHI to begin the layout discussion.