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Coconut shreds and coconut pith are byproducts of coconut processing and are widely used in gardening, building materials and environmental protection. However, fresh coconut shreds and coconut pith have a high moisture content (usually 50%-70%), and the moisture content needs to be reduced to 10%-15% through drying to meet storage and processing requirements. The traditional drying method is inefficient and limited by weather. When using a hot air dryer, the performance of the grate directly determines the thermal energy utilization efficiency and drying uniformity.
1. Uneven drying: some coconut pith agglomerates, and internal moisture remains, leading to the risk of mildew.
2. Excessive energy consumption: Traditional fixed grates do not burn fully, with heat losses of up to 30%.
3. Frequent maintenance: The grate is prone to dust accumulation and clogging, and needs to be shut down and cleaned daily, affecting production capacity.
The company introduced a drying system with adjustable speed chain grate, which has significant effects:
1. Efficient combustion
The grate adopts a segmented design, which adjusts the moving speed to match the combustion rate of biomass fuel (such as coconut shell) to ensure full combustion, improve thermal efficiency by 25%, and evenly distribute the air to avoid local high temperature and prevent the coconut shreds from being over-scorched.
2. Drying uniformity
The stable heating of the grate keeps the hot air temperature in the dryer constant (controlled at 120±5℃), and with the multi-layer conveyor belt, the moisture fluctuation of coconut bran is reduced from ±8% to ±2%.
3. Automation and durability
The automatic ash cleaning grate reduces manual intervention, and the maintenance cycle is extended to once a week. The high-temperature resistant alloy material can withstand long-term combustion and has a service life of more than 5 years.
