4–6 T/H Sugar Beet Pulp Rotary Dryer in Estonia

Why the Tartu Processor Needed a Dedicated Beet Pulp Dryer

Wet sugar beet pulp is very different from the dry fibrous materials normally handled in a bedding plant. Fresh or pressed pulp contains a large amount of water and cannot simply be blended into a dry bedding product. High moisture increases transport weight, creates poor storage conditions and makes it difficult to maintain a repeatable final blend. For the Estonian customer, this meant that the availability of beet pulp was not the limiting factor; moisture removal was.

The company wanted to use beet pulp as one fibrous component of a compressed horse bedding product, while retaining locally sourced peat as the other major component. Rather than attempting to dry the finished blend, the process separates the two operations. Wet beet pulp is dried under conditions selected for the pulp itself, then cooled before entering the customer's existing blending section. This gives the operator much better control over final moisture and avoids forcing two physically different materials through the same drying condition.

Raw Beet Pulp Condition Before Drying

The customer sources beet pulp through regional agricultural and sugar-processing supply channels in the Baltic area. Incoming condition varies between shipments, so the dryer is not operated against one fixed feed-moisture assumption. Wet beet pulp must first be checked for moisture, foreign material and consistency because all three affect dryer loading and evaporation demand. Large compacted masses are loosened before controlled feeding so that the dryer receives a more even material bed.

For engineering purposes, dryer capacity is always considered together with incoming and outgoing moisture. A statement such as “6 T/H dryer” is incomplete unless the water load is known. In this project, the φ1.8×20 rotary dryer is configured for approximately 4–6 T/H wet-feed capacity under the specified operating envelope, with approximately 2–3 T/H water evaporation capacity. The target discharged beet pulp is controlled at approximately 12–14% moisture. Actual dry-product output therefore changes with the incoming moisture rather than remaining identical for every shipment.

Selected Sugar Beet Pulp Rotary Dryer and Capacity

The 4–6 T/H figure refers specifically to wet material entering the dryer, not to 4–6 T/H of finished dry beet pulp. This distinction is important for any customer comparing rotary dryer quotations. If incoming pulp becomes wetter, more of the dryer's thermal capacity is consumed evaporating water and dry-product throughput falls. If the pulp has already been mechanically dewatered more effectively, the same drying system can process more solids within its evaporation limit. RICHI therefore sizes a sugar beet pulp drying system from both tonnes per hour and moisture balance rather than quoting capacity independently of feed condition.

How the Rotary Dryer Handles Fibrous Beet Pulp

Wet beet pulp can arrive as cohesive fibrous masses rather than a freely flowing granular material. Stable drying consequently starts with controlled feeding. Once the pulp enters the rotating drum, the internal lifting arrangement repeatedly raises and disperses the material through the hot-air stream. This increases contact between the wet pulp and drying medium while the drum rotation advances the material toward discharge.

Residence time, drum speed, feeding rate and heat input are coordinated rather than adjusted independently. If wet feed suddenly rises while heat input remains unchanged, outlet moisture can increase. If feed is reduced too aggressively without corresponding thermal adjustment, the material can be exposed to unnecessarily severe drying conditions. The Estonian installation therefore uses variable operating control so the dryer can respond to the moisture variation typical of agricultural by-products instead of relying on a single fixed setting throughout the season.

Temperature Control for Sugar-Containing Beet Pulp

Sugar beet pulp requires more careful thermal control than inert mineral material. The temperature of the drying gas is not the same as the actual temperature of the wet solids inside the drum, particularly near the inlet where evaporation absorbs substantial heat. For this reason, quoting only a high inlet-gas temperature can be misleading when evaluating whether the process is safe for beet pulp.

The project uses an adjustable hot-air system and monitors both drying conditions and discharged material moisture. The operator's objective is not to maximize temperature; it is to supply enough thermal energy to remove the required water without scorching the fibrous solids or creating unstable outlet quality. RICHI therefore configures the burner, airflow and drum operation around the customer's real incoming moisture range and evaporation requirement. This is especially important when the same supplier's pulp changes condition during different parts of the processing season.

Cooling Before Beet Pulp Enters the Bedding Blend

Dried beet pulp leaves the thermal section above the temperature preferred for immediate compression packaging. The customer therefore retains a cooling stage between drying and final bedding preparation. Material is cooled toward near-ambient handling temperature before it is blended and compressed, which reduces the risk of trapping excess heat inside dense bales and gives the packaging section a more stable product condition.

Cooling is particularly relevant in a compressed bedding application because bulk fibrous material occupies substantial volume. Once compressed, heat dissipates more slowly than it does from a loose material bed. The process sequence therefore keeps drying, cooling, blending and baling as separate controlled operations instead of moving hot material directly from the dryer into a finished package.

How Beet Pulp Fits into the Customer's Horse Bedding Process

The dried beet pulp is not being produced as livestock feed in this installation. Its downstream use is the customer's horse bedding product. After the pulp reaches the required moisture and is cooled, it enters the existing blending system together with prepared peat. The customer can adjust the formulation according to physical characteristics such as bulk density, moisture, absorbency and compression behavior rather than depending on one permanently fixed ratio.

This distinction also affects dryer design. RICHI did not size the system as a feed dryer based on nutritional preservation targets or as a pellet-line dryer based on subsequent pellet-mill moisture. The required endpoint is instead a dry, manageable fibrous ingredient that can be blended, conveyed and compressed reliably in the customer's bedding facility. Keeping the equipment selection tied to the actual end use avoids unnecessary process sections and reduces the chance of overengineering the project.

Why Peat Is Not Dried Together with the Beet Pulp

One important engineering decision was to keep peat preparation separate from beet pulp drying. The two materials can have substantially different incoming moisture, particle behavior, density and drying response. Feeding a highly variable peat/beet-pulp mixture into one drum would make the evaporation load harder to predict and could create uneven discharge moisture between the two fractions.

Instead, the customer prepares the peat through its existing material-handling route while the new RICHI dryer concentrates on wet beet pulp. The streams meet only after the beet pulp has reached its controlled endpoint and passed through cooling. For a processor that already owns part of the bedding-production infrastructure, this modular arrangement is easier to control and leaves each material free to receive the preprocessing it actually needs.

Capacity Planning Around Water Evaporation

The most useful figure for this Sugar Beet Pulp Rotary Dryer in Estonia is not just the 4–6 T/H wet-feed range. The 2–3 T/H evaporation range explains why production changes when incoming pulp moisture changes. For example, two batches may both weigh five tonnes before drying but contain very different quantities of dry solids. The wetter batch requires more thermal energy and more evaporation capacity to reach the same 12–14% final moisture.

This is why RICHI asks dryer buyers for incoming moisture, target moisture and required finished-product tonnage before final equipment sizing. A customer who needs 5 T/H of dry finished product requires a substantially different system from one who needs to feed 5 T/H of wet material into a dryer. For agricultural residues, confusing these two capacity definitions is one of the easiest ways to undersize a drying section.

Preparing the Dryer for Estonia's Seasonal Conditions

Estonia's operating environment also matters. Outdoor temperature and humidity vary significantly between summer and winter, and wet agricultural by-products can behave differently after transport and storage. The customer therefore needed enough operating adjustment to maintain final moisture rather than assuming identical conditions throughout the year.

The system uses controlled feeding, adjustable drum operation and coordinated hot-air supply to accommodate normal feed variation. Moisture checks at receiving and discharge give operators a practical basis for adjustment. The objective is a repeatable 12–14% endpoint, not an artificially precise single moisture number that would be unrealistic for a fibrous agricultural by-product.

Fuel Selection for the Tartu Drying Project

The thermal system was configured around solid biomass fuel available to the customer, including suitable wood-based fuel from regional supply channels. Fuel choice matters because the dryer requires a stable heat supply during continuous evaporation. The combustion section must therefore be sized together with the maximum expected water-removal load rather than simply matched to the drum's physical dimensions.

RICHI also reviewed hot-air delivery and exhaust handling as part of the dryer configuration. Drying fibrous agricultural material carries fine particles into the exhaust stream, so gas velocity and downstream collection need to be considered during system design. The objective is to maintain effective heat and mass transfer without unnecessarily increasing entrainment losses from the drum.

Integrating the Dryer with Existing Bedding Equipment

Because the customer already had downstream material handling and compression-baling capability, the installation work concentrated on the interfaces around the new dryer. The receiving and feeding section had to supply wet beet pulp evenly; the discharge had to connect to cooling; and the cooled material then had to enter the existing blending and baling arrangement without creating a new bottleneck.

This integration work is particularly important when a customer buys one machine rather than an entire RICHI line. A correctly sized rotary dryer can still perform poorly if the upstream feeder delivers material in large surges or if downstream equipment cannot remove the dried product fast enough. Before manufacturing, RICHI therefore reviews the customer's available equipment, elevations, conveying direction, operating capacity and available installation space so the standalone machine functions as part of the actual plant rather than as an isolated unit.

Compression Baling After Drying and Cooling

The final bedding material has relatively low loose bulk density, making volume reduction important for distribution across Estonia and neighboring Baltic markets. The customer's existing compression equipment forms compact bales after the dried beet pulp has been cooled and blended with the prepared bedding material. This lowers transport volume and makes storage at equestrian facilities more practical than shipping the product loose.

Drying is central to that packaging step. If the beet pulp enters the blend with unstable moisture, bale weight, compression behavior and storage condition become more difficult to control. By holding the dried pulp around the 12–14% target range before cooling and blending, the customer gains a much more predictable material for the downstream baling process.

Shipping the Rotary Dryer from Qingdao to Estonia

The φ1.8×20 rotary dryer and its project components were prepared for export from Qingdao, China, and shipped by sea to the Port of Tallinn. From Tallinn, the equipment was moved by road to the customer's facility in the Tartu region. Because a 20 m drying drum is very different logistically from a compact standalone biomass pellet mill or mixer machine, transport planning had to consider component dimensions, loading method and inland handling before dispatch.

RICHI supplied the equipment arrangement and installation information required for site preparation before arrival. Commissioning focused on drum alignment and rotation, feeding stability, hot-air operation, exhaust performance and moisture adjustment. Test production then established operating settings around the customer's actual beet pulp rather than assuming that nominal design conditions would exactly match every incoming batch.

What the Customer Gained from the Single-Machine Upgrade

The principal result was control over a raw material that had previously been difficult to incorporate consistently into the customer's bedding process. The new drying section gives the processor a defined 4–6 T/H wet-feed operating range and approximately 2–3 T/H water-removal capability, with dried beet pulp targeted at 12–14% moisture. This provides a much clearer production basis for downstream cooling, blending and compression than purchasing wet pulp and attempting to compensate for moisture elsewhere in the process.

The project also leaves room for expansion. If bedding sales increase beyond the present drying capacity, RICHI can evaluate whether the next constraint is evaporation capacity, wet-material feeding, cooling, blending or baling before recommending another machine. Expansion therefore follows the actual bottleneck rather than automatically duplicating every piece of equipment in the facility.

Planning a Sugar Beet Pulp Rotary Dryer Project

• Define capacity correctly: Specify both wet-feed tonnes per hour and the required dry-product output.
• Provide incoming moisture: Dryer sizing depends heavily on how much water must actually be removed.
• Set a realistic final moisture range: For this project, the customer targets approximately 12–14% after drying.
• Describe the physical feed condition: Pressed pulp, loose pulp and compacted stored material can require different feeding arrangements.
• Confirm the heat source: Fuel availability and cost affect the combustion-system configuration.
• Review downstream equipment: Cooling, conveying, blending and packaging must be able to accept the dryer's actual output.

A 4–6 T/H Sugar Beet Pulp Drying Solution for Estonia

The Sugar Beet Pulp Rotary Dryer in Estonia provides the Tartu processor with a dedicated 4–6 T/H wet-material drying stage for its horse bedding operation. The φ1.8×20 single-pass drum is configured around approximately 2–3 T/H of water evaporation and a final beet pulp moisture target of 12–14%. By drying the beet pulp separately and blending it only after cooling, the customer can manage two very different bedding ingredients without forcing them through the same thermal process.

For a similar project, RICHI needs more than a requested dryer capacity to select the correct equipment. Send us the raw material, incoming moisture range, required final moisture, wet feed volume per hour, required dry output per hour, daily operating hours, available fuel, existing upstream and downstream equipment, and site conditions. RICHI Machinery can then calculate the water balance and determine the appropriate drum size, evaporation capacity, feeding system, heat source and dust-control configuration for the actual material.