Biomass rotary dryer

Biomass Rotary Dryer is a highly efficient industrial drying machine designed to remove moisture from biomass materials such as sawdust, wood chips, rice husk, straw, bagasse, palm fiber, and other agricultural residues.
The equipment uses a rotating drum and hot air circulation to achieve fast, uniform, and continuous drying. With low energy consumption and stable performance, it is widely used in biofuel production, pellet manufacturing, animal feed, and compost processing industries.

Working Principle of Biomass Rotary Dryer

The biomass rotary dryer works based on a direct or indirect heat exchange between hot air and wet materials inside a rotating drum.

1. Feeding: Moist biomass is fed into the drum through a screw feeder or conveyor.
2. Drying: As the drum rotates, the biomass is lifted and cascaded through a stream of hot air generated by a furnace or burner.
3. Heat Transfer: The moisture in the biomass evaporates as it moves along the drying zone.
4. Discharging: Dried biomass exits from the discharge end and is collected for cooling or pelletizing.
5. Dust Removal: The exhaust gas passes through a cyclone separator or bag filter to ensure environmental compliance.

This continuous drying process ensures uniform moisture reduction and maintains the physical quality of biomass materials.

Main Components of a Biomass Rotary Dryer

A complete biomass rotary drying system typically includes:

• Rotary Drum: Main drying chamber made of wear-resistant steel.
• Burner or Furnace: Heat source that can use wood, coal, gas, or biomass fuel.
• Feeding System: Controls the feeding speed and prevents clogging.
• Air Blower and Hot Air Duct: Ensures uniform heat distribution inside the drum.
• Cyclone Dust Collector: Removes dust particles and protects the environment.
• Electric Control Cabinet: Monitors temperature, speed, and air volume.
• Discharging System: Automatically collects dried materials for the next process.

Technical Features of Biomass Rotary Dryer

• High Drying Efficiency: Unique lifting plate design ensures full contact between hot air and material.
• Wide Material Compatibility: Suitable for various organic and agricultural residues.
• Energy-Saving Design: Optimized heat utilization and waste heat recovery reduce fuel consumption.
• Durable Construction: Made from wear-resistant steel plates for long service life.
• Adjustable Operation: Temperature, air volume, and rotation speed can be customized.
• Environmentally Friendly: Equipped with multi-stage dust collection system to reduce emissions.
• Large Capacity: Production capacity ranges from 0.5–20 tons per hour, customizable as required.

Advantages of Using a Biomass Rotary Dryer

1. Consistent Drying Quality

Uniform hot air distribution guarantees that every particle of biomass is evenly dried, preventing over-drying or burning.

2. Energy Efficiency

Biomass rotary dryers recycle exhaust heat, reducing fuel consumption by up to 30% compared to traditional drying methods.

3. Stable Continuous Operation

Designed for 24-hour operation with automatic feeding and discharge systems for high productivity.

4. Strong Adaptability

Handles different types of biomass materials with varying moisture content, density, and particle size.

5. Low Maintenance

Simple structure with durable parts means lower maintenance cost and minimal downtime.

6. Eco-Friendly Design

Equipped with dust collectors, scrubbers, and silencers to meet international environmental standards.

Applications of Biomass Rotary Dryer

Biomass rotary dryers are widely used in many industries, including:

Paper and Pulp Industry: Drying fiber residues for recycling.

Biofuel Production: Drying raw materials for wood pellets, briquettes, and biochar.

Agriculture: Processing agricultural residues such as straw, husk, and stalks.

Forestry Industry: Drying sawdust, bark, and wood chips.

Animal Feed Industry: Drying feed ingredients like alfalfa, grass, or brewer’s grains.

Composting Industry: Reducing moisture content in organic waste and compost materials.

Biomass Rotary Dryer Technical Parameters

Model	Cylinder diameter(mm)	Cylinder length(mm)	Cylinder volume(m3)	Cylinder rotary speed (r/min)	Power(kW)	Weight(t)
0.6×5.8	600	5800	1.7	1-8	3	2.9
0.8×8	800	8000	4	1-8	4	3.5
1×10	1000	10000	7.9	1-8	5.5	6.8
1.2×5.8	1200	5800	6.8	1-6	5.5	6.7
1.2×8	1200	8000	9	1-6	5.5	8.5
1.2×10	1200	10000	11	1-6	7.5	10.7
1.2×11.8	1200	11800	13	1-6	7.5	12.3
1.5×8	1500	8000	14	1-5	11	14.8
1.5×10	1500	10000	17.7	1-5	11	16
1.5×11.8	1500	11800	21	1-5	15	17.5
1.5×15	1500	15000	26.5	1-5	15	19.2
1.8×10	1800	10000	25.5	1-5	15	18.1
1.8×11.8	1800	11800	30	1-5	18.5	20.7
1.8×15	1800	15000	38	1-5	18.5	26.3
1.8×18	1800	18000	45.8	1-5	22	31.2
2×11.8	2000	11800	37	1-4	18.5	28.2
2×15	2000	15000	47	1-4	22	33.2
2×18	2000	18000	56.5	1-4	22	39.7
2×20	2000	20000	62.8	1-4	22	44.9
2.2×11.8	2200	11800	44.8	1-4	22	30.5
2.2×15	2200	15000	53	1-4	30	36.2
2.2×18	2200	18000	68	1-4	30	43.3
2.2×20	2200	20000	76	1-4	30	48.8
2.4×15	2400	15000	68	1-4	30	43.7
2.4×18	2400	18000	81	1-4	37	53
2.4×20	2400	20000	91	1-4	37	60.5
2.4×23.6	2400	23600	109	1-4	45	69.8
2.8×18	2800	18000	111	1-3	45	62
2.8×20	2800	20000	123	1-3	55	65
2.8×23.6	2800	23600	148	1-3	55	70
2.8×28	2800	28000	172	1-3	75	75
3×20	3000	20000	14	1-3	55	75
3×23.6	3000	23600	170	1-3	75	85
3×28	3000	28000	198	1-3	90	91
3.2×23.6	3200	23600	193	1-3	90	112
3.2×32	3200	32000	257	1-3	110	129
3.6×36	3600	36000	366	1-3	132	164
3.8×36	3800	36000	408	1-3	160	187
4×36	4000	36000	452	1-3	160	195

Biomass rotary dryer video