Why do sawdust need to be dried quickly?

Wood chips have a high moisture content (usually 40% -60%), and if not dried in time, they are prone to mold and rot, which affects their subsequent use (such as biomass fuel, feed, and board processing). Traditional air drying has low efficiency and industrial production relies on specialized equipment.

2、 The core factor of rapid drying

1. Initial moisture content control

Problem: A moisture content greater than 60% will consume a large amount of heat energy and reduce efficiency.

Solution: Use a dehydrator (such as a centrifuge) for pretreatment to reduce the moisture content to below 40%.

Keywords: sawdust dewatering machine, pretreatment equipment

2. Heat source selection

Drum dryer: using coal, wood or biomass as fuel, suitable for large-scale production with a daily processing capacity of 5-10 tons.

Steam drying system: By uniformly heating with high-temperature steam, local overheating is avoided, and the moisture content of the finished product is stabilized below 10%.

Keywords: steam sawdust dryer, biomass fuel dryer

3. Air volume and temperature control

Temperature setting: 100-150 ℃ (too high is prone to burning, too low is inefficient).

Wind speed regulation: 3-5m/s, ensuring that the hot air penetrates the wood chip layer evenly.

Keywords: sawdust drying temperature control, high-efficiency air volume regulation

4. Optimization of internal structure of equipment

Advantages of drum dryer:

The internal copying board design repeatedly flips the wood chips to increase the contact area with hot air.

The three-layer drum structure (combining forward and backward flow) increases the thermal energy utilization rate by more than 30%.

3、 Recommended high-efficiency drying equipment

1. Drum dryer

Applicable scenario: Large scale continuous production (daily processing capacity of 5-10 tons).

Advantages: Low energy consumption (30-50 yuan per ton cost), high degree of automation.

Model reference:

DLGT1212 (1-1.5 tons/hour)

DLGT2912/3 (7-10 tons/hour)

2. Steam drying system

Applicable scenarios: High quality requirements for finished products (such as export grade wood chips).

Advantages: Environmental protection and safety, precise control of moisture content.

4、 Summary of Practical Techniques

Pre treatment dehydration: Reduce the initial moisture content to below 40%.

Parameter optimization: Temperature 100-150 ℃, wind speed 3-5 m/s.

Regular maintenance: Clean the accumulated material on the drum and check if the insulation layer is damaged.

5、 Take action immediately!

If you need to customize an efficient drying solution, click the button below for free consultation or equipment quotation!