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In order to improve the quality of particleboard, a company in Guangdong needs to dry wood shavings efficiently. Traditional coal-fired hot air furnaces have problems such as high pollution and large temperature fluctuations, which affect the moisture content of shavings (target ≤2%) and the strength of finished boards. To this end, a clean hot air furnace + high-efficiency heat exchanger system was introduced to achieve environmentally friendly, stable and efficient shaving drying.
1. Improve drying quality
Uniform heating: The clean hot air output by the heat exchanger has no local high temperature, avoiding shavings coking or uneven moisture content.
Retain fiber strength: Low temperature and slow drying (120~150℃) reduces wood fiber damage and increases the bending strength of the board by 10%~15%.
2. Reduce energy consumption
Waste heat recovery: Flue gas waste heat preheats fresh air, with a comprehensive thermal efficiency of 90%.
3. Environmental compliance
Ultra-low emissions: NOx <100mg/m³, particulate matter <20mg/m³, meeting the "Comprehensive Emission Standards for Air Pollutants" (GB16297).
No sulfide pollution: Natural gas combustion does not produce SO₂, avoiding the problem of yellowing of planed boards.
4. Automated production
Intelligent adjustment: Automatically adjust the drying time (30~60 minutes) according to the initial moisture content of the shavings (20%~40%).
Fault warning: Real-time monitoring of the heat exchanger pressure difference and temperature to prevent blockage or overheating.
This case fully demonstrates the technical advantages of clean hot air furnace in the field of wood shavings drying, has achieved significant economic and environmental benefits, and provided the carbon industry with an efficient and environmentally friendly heat source solution.
