MINGHUNG
 | Key Advantages |
1. Extremely high thermal efficiency: Hot air circulation utilization rate exceeds 85%, reducing energy consumption by 30%-40% compared to traditional direct-exhaust dryers.
2. Stable and controllable drying: Closed-loop air path design minimizes interference from outside temperature, keeping outlet moisture fluctuation within ±1%.
3. Compact footprint: Occupies approximately 25% less floor space compared to other dryer types with the same capacity.
4. Low environmental emissions: Only a small amount of purified exhaust gas is released, easily meeting international environmental standards when combined with a dust removal system.
5. Simple operation and maintenance: Uses standard fans and air ducts with few wear parts, resulting in low maintenance costs.
6. Fast startup and response: The hot air circulation system allows rapid heating of the drying zone, with startup to normal operation time ≤15 minutes.
| Working Principle |
During system operation, high-temperature hot air generated by the hot air furnace is driven by the main circulating fan into the drying drum. Wet fibers are continuously lifted by lifting plates inside the drum, where they fully contact with the hot air and moisture evaporates. The hot air containing water vapor passes through a cyclone dust collector to remove dust, after which most (approximately 80%-90%) is directly returned to the hot air furnace via the return air duct for reheating, forming a closed-loop circulation. A small portion of the exhaust air is deeply purified by a bag filter before discharge. A fresh air inlet automatically supplements outside air to balance system pressure and control humidity. By adjusting the ratio between return air and exhaust air, the temperature and humidity inside the drying drum can be precisely controlled.
| Main Components |
1. Hot air furnace system: Optional biomass/gas/oil fuel, equipped with a heat exchanger, thermal efficiency ≥90%.
2. Main circulating fan: High-temperature centrifugal fan with VFD control, adjustable air volume.
3. Drying drum: With wear-resistant lifting plates, inner cylinder made of heat-resistant steel plate.
4. Cyclone dust collector: Primary dust removal for large particles, protecting the fan and return air duct.
5. Bag filter: Secondary deep dust removal, emission concentration ≤20mg/Nm³.
6. Return air duct system: Insulated design to minimize heat loss, equipped with air volume control dampers.
7. Fresh air and exhaust system: Automatically controlled fresh air supplementation and exhaust of moist waste gas.
8. Temperature and humidity control system: PLC + sensors, automatically adjusts return air ratio and furnace temperature.
9. Inlet and outlet sealing devices: Rotary airlock or double flap design to prevent cold air entry and hot air leakage.
| Main Specifications |
Processing capacity: 3 – 40 t/h (based on bone-dry fiber)
Inlet moisture content: 35% – 60%
Outlet moisture content: 6% – 12% (adjustable)
Drying temperature: 130 – 220℃
Hot air circulation rate: 80% – 90%
Thermal efficiency: ≥85%
Drum dimensions: diameter 0.8 – 2.6m, length 6 – 20m
Drum rotation speed: 3 – 10 rpm (VFD adjustable)
Main circulating fan power: 15 – 160 kW
Total installed power: 35 – 350 kW (depending on model)
Dust removal efficiency: ≥99.8%
Startup to stable operation time: ≤15 minutes
| Company Profile |
