MH-RD26
MINGHUNG
841939
Do you know what is the Difference between Single-pass dryer and Three-pass dryer?
 | Function of Rotary Drum Dryer |
| The Comparison of Single-pass dryer and Triple-pass dryer |
-Single pass dryer
Structural features:
- Single-layer drum: Materials and hot air are dried in a single drum.
- Lifting plate design: Internal installation of L-shaped or lifting plate, turning shavings to increase the thermal contact area.
- Hot air flow direction: Can be configured to flow (same direction) or countercurrent (reverse)
Advantages:
- Simple structure: low maintenance cost, low failure rate.
- Strong adaptability: Can handle different particle sizes of shavings (0.5~5mm).
- Low investment cost: Suitable for small and medium-sized production lines (production capacity ≤10t/h)
-Triple pass dryer
Structural features:
- Three-layer sleeve: The material is successively passed through the inner, middle and outer three layers of drums, and the hot air is recycled many times.
- Hot air classification heating: Hot air (400℃) first contact the innermost layer of high humidity material, layer by layer cooling to the outer layer (about 120℃).
- Lifting system: Each layer of independent lifting board, optimize the material throwing path.
Advantages
- High thermal efficiency: exhaust gas temperature can be reduced to 80~100℃, heat utilization rate of 75%~85%.
- Significant energy saving: 20%~30% energy saving compared to the single channel dryer.
- Uniform drying: multi-layer slow Su drying, the final moisture content is more stable (±1%).
- The Comparison of Key features
| Comparison | Single pass dryer | Tirple pass dryer |
| Heating efficiency | 50%-60% | 75%-85% |
| Energy consumption | High (1000-1200kcal/kg water) | Low (700-900kcal/kg water) |
| Capacity | Suitable for small and middel (≤10t/h) | Suitable for Big capacity (10-30t/h) |
| Water content control | ±2% | ±1% |
| Maintainence | Low | Medium to High |
| Application | Common and small particle board plant | High quality particle board, OSB and continuous press |
- The Comparison of Structure
| Items | Single pass dryer | Triple pass dryer |
| Drum quantity | Single cylindrical roller | Three concentric columns nested |
| Length | Longer (same capacity, longer 1.5 times) | Shorter |
| Diameter | smaller | Bigger |
| Support shelf | Two sets of support wheels (front and rear support) | More than three sets support wheels |
| Access door | Few (1-2 pcs on the side) | More (every layers have ) |
- The Comparison of Inlet and Outlet
| Single pass dryer | Triple pass dryer | |
| Inlet | Unilateral opening (hot air and material enter at the same end) | Multilayer inlet (hot air into each layer channel) |
| Outlet | Simple hopper type | Multistage separation structure (with material guide plate) |
So, as your budget and production capacity, you can choose the suitable dryer type
Our factory manufacture and offer Wood based panel machinery like OSB equipment, MDF production line, Particle board making machines, and another our department make Plywood machine and veneer machine.
Therefore if you need related dryer or other machines, welcome contact us for more information
Do you know what is the Difference between Single-pass dryer and Three-pass dryer?
| Function of Rotary Drum Dryer |
| The Comparison of Single-pass dryer and Triple-pass dryer |
-Single pass dryer
Structural features:
- Single-layer drum: Materials and hot air are dried in a single drum.
- Lifting plate design: Internal installation of L-shaped or lifting plate, turning shavings to increase the thermal contact area.
- Hot air flow direction: Can be configured to flow (same direction) or countercurrent (reverse)
Advantages:
- Simple structure: low maintenance cost, low failure rate.
- Strong adaptability: Can handle different particle sizes of shavings (0.5~5mm).
- Low investment cost: Suitable for small and medium-sized production lines (production capacity ≤10t/h)
-Triple pass dryer
Structural features:
- Three-layer sleeve: The material is successively passed through the inner, middle and outer three layers of drums, and the hot air is recycled many times.
- Hot air classification heating: Hot air (400℃) first contact the innermost layer of high humidity material, layer by layer cooling to the outer layer (about 120℃).
- Lifting system: Each layer of independent lifting board, optimize the material throwing path.
Advantages
- High thermal efficiency: exhaust gas temperature can be reduced to 80~100℃, heat utilization rate of 75%~85%.
- Significant energy saving: 20%~30% energy saving compared to the single channel dryer.
- Uniform drying: multi-layer slow Su drying, the final moisture content is more stable (±1%).
- The Comparison of Key features
| Comparison | Single pass dryer | Tirple pass dryer |
| Heating efficiency | 50%-60% | 75%-85% |
| Energy consumption | High (1000-1200kcal/kg water) | Low (700-900kcal/kg water) |
| Capacity | Suitable for small and middel (≤10t/h) | Suitable for Big capacity (10-30t/h) |
| Water content control | ±2% | ±1% |
| Maintainence | Low | Medium to High |
| Application | Common and small particle board plant | High quality particle board, OSB and continuous press |
- The Comparison of Structure
| Items | Single pass dryer | Triple pass dryer |
| Drum quantity | Single cylindrical roller | Three concentric columns nested |
| Length | Longer (same capacity, longer 1.5 times) | Shorter |
| Diameter | smaller | Bigger |
| Support shelf | Two sets of support wheels (front and rear support) | More than three sets support wheels |
| Access door | Few (1-2 pcs on the side) | More (every layers have ) |
- The Comparison of Inlet and Outlet
| Single pass dryer | Triple pass dryer | |
| Inlet | Unilateral opening (hot air and material enter at the same end) | Multilayer inlet (hot air into each layer channel) |
| Outlet | Simple hopper type | Multistage separation structure (with material guide plate) |
So, as your budget and production capacity, you can choose the suitable dryer type
Our factory manufacture and offer Wood based panel machinery like OSB equipment, MDF production line, Particle board making machines, and another our department make Plywood machine and veneer machine.
Therefore if you need related dryer or other machines, welcome contact us for more information
