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Looking For A Wood Chip Rotary Dryer With A Drying Rate Of 2 Tons/Hour And Moisture Content From 40% To 10%

2025-02-12 09:48:04
Baichy
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Calculation of basic parameters of wood chip dryer

 
- Initial wet wood chip processing capacity: 2 tons/hour (moisture content 40%).
- Dry matter weight: 2 tons × (1 - 40%) = 1.2 tons/hour.
- Total weight after drying: 1.2 tons ÷ (1 - 10%) ≈ 1.333 tons/hour.
- Amount of water to be evaporated: 2 tons - 1.333 tons ≈ 0.667 tons/hour (667 kg/hour).
 

Heat load demand of wood chip dryer

 
- Heat required to evaporate each kilogram of water: about 2571 kJ/kg (including sensible heat + latent heat of vaporization heated to 100℃).
- It is actually necessary to increase heat loss compensation by 10-20%, and it is recommended to choose a heat source of 500-570 kW.
 

Key parameters of rotary dryer

 
- Size recommendations:
- Diameter: 1.5-2.5 meters
- Length: 8-15 meters
- Aspect ratio: 5:1 to 8:1 (to ensure sufficient residence time).
- Speed: 5-20 rpm, adjustable.
- Tilt angle: 1-3°, adjusted according to residence time.
- Lifting plate design: lifting or fan type to improve material dispersion.
- Hot air temperature: 200-400℃ (adjusted according to heat source and material temperature resistance).
 

Supporting system requirements

 
- Heat source selection:
- Direct heating with gas/oil (high efficiency, pollution prevention).
- Indirect heating with steam (clean materials, suitable for high-demand scenarios).
- Biomass combustion (economical and environmentally friendly, if wood chips are used as fuel).
- Dust removal system:
- Cyclone separator + bag filter (dust handling, explosion-proof design).
- Exhaust gas emissions meet environmental standards (optional catalytic combustion or wet treatment).
- Safety measures:
- Explosion-proof valves, temperature sensors, spark detection systems.
- Inert gas protection (optional, to reduce the risk of explosion).
 
Looking-For-A-Wood-Chip-Rotary-Dryer-With-A-Drying-Rate-Of-2
 

What role does the dryer play in sawdust processing?

 

1. Improve the economic value of sawdust

 
As a clean energy source: dried sawdust can be used as biomass fuel, such as made into bio-pellets for combustion, becoming a new type of environmentally friendly fuel and alternative energy. This fuel not only has low investment costs, but also has a high rate of return, which helps to reduce dependence on traditional energy and achieve sustainable energy utilization.
 
Manufacture of artificial boards: dried sawdust can be used to produce various artificial boards, such as particleboards, fiberboards, etc. These boards can be used in furniture manufacturing, interior decoration and other fields, and have high economic value.
 

2. Broaden the scope of application of sawdust

 
Production of chemical raw materials: dried sawdust can be made into a variety of chemical raw materials such as glucose, bioethanol, formaldehyde, aldehyde and organic acid after hydrolysis. These raw materials are widely used in the pharmaceutical, food, chemical and other industries.
 
Cultivating edible fungi: Dried sawdust can also be used to cultivate edible fungi such as Tremella, Oyster mushroom, and Shiitake mushroom. This use not only improves the utilization rate of sawdust, but also provides high-quality culture medium for the edible fungi industry.
 

3. Improve the processing efficiency of sawdust

 
The dryer can quickly remove moisture from sawdust, so that the moisture content of sawdust reaches the requirements suitable for subsequent processing. This can not only shorten the processing cycle of sawdust and improve production efficiency, but also reduce energy consumption and production costs.
 

4. Improve the physical properties of sawdust

 
The dried sawdust has better physical properties, such as strength and hardness. The improvement of these properties makes the sawdust easier to handle and shape in the subsequent processing, improving the quality and stability of the product.