Sawdust Rotary Drum Dryer_Biomass Drying_Product

lntroduction

Sawdust rotary dryer is widely used to reduce the moisture content of the raw material in the biomass industries; and it is can dry the wet sawdust form moisture content of 40~50% to 12% to improve the thermal value of sawdust.
There is a high-speed rotating crushing device inside the dryer, which increases the contact area between sawdust and hot air. The specially designed lifting plate and guide plate inside the dryer prevent the raw material from sticking to the sheet and wall of the dryer; The sawdust dryer has good insulation and sealing performance, and high thermal efficiency.
We can provide triple pass sawdust rotary dryer, which includes heating part, feeding machine, rotary dryer, discharging machine and cyclone dust collector. We can also offer the full Drying and Pelleting Plant in order to make a one-stop solution for our customers.

System

The three pass rotary drum wood chip dryer adopts three layers of stacked drums and combines countercurrent and cocurrent drying technology to achieve efficient and uniform drying of the wood chips, Maximizing thermal efficiency. Brief Workflow 1. Material Feed and High-temperature Hot Air Wet wood chips are fed by the feeder, and high-temperature hot air enters from the discharge end in a reverse flow. 2. Three-Pass Drying First Pass (outer drum, countercurrent): The wood chips encounter the high-temperature hot air, evaporating water rapidly. Second Pass (middle channel, countercurrent): Semi-dry wood chips continue to move in a reverse flow for stable dehydration. Third Pass (inner channel, cocurrent): Nearly dry wood chips come into contact with the low-temperature exhaust gas in a cocurrent flow, drying slowly to prevent over-drying. 3.Discharge and Dust Removal Dried wood chips are discharged from the discharge end, and the low-temperature exhaust gas is purified and dusted before being discharged.

Advantage

1. Compared with the single-drum dryer, the length of the 3 pass rptary dryer is shortened by 50%, reducing the building area and saving about 40% project investment. 2. Multiple Heating Source. Customers can choose the heating source according their situation, we can design the customized solutions. 3. Designed inner structure for sawdust. High drying efficiency to 90-95%. 4. The system is equipped with PLC system and video monitoring system, with a high degree of automation and simple operation. 5. The system has a unique sealing structure, no thermal energy leakage. 6. Low investment, low operating cost, and short investment recovery time.

Sawdust Drying and Pelleting Plant Running Video

Technical Parameter

Model	DDSG2010/3	DDSG2210/3	DDSG2510/3	DDSG2512/3	DDSG2912/3
Output Capacity(t/d)	63.5-144.5	67.5-154.0	83.5-193.0	100-227.0	120.0-268.0
Vaporization(t/h)	1.850	1.976	2.427	2.912	3.432
Early moisture(%)	35-60	35-60	35-60	35-60	35-60
Final moisture(%)	12-15	12-15	12-15	12-15	12-15
Drying temperature(℃)	270	270	270	270	270
Total motor power(kw)	78	85	110	125	135
Total weight(kg)	25000	27000	35000	38000	43500
Plant area(m)	8m*18m	10m*18m	10m*18m	10m*20m	10m*20m

Except above models, we also can supply special model according to your requirements.

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