It issuitable for dryingsensitive material like sawdust,rice hull, milledwheat straw, milled cotton/ corn stalks and so on.It is made up of heat stove, tube, impulse jar, function tube, fan, and cyclone separator.It can reduce moisture from 40-45% to 8-12%.
Fuel for the furnace: wood waste, coal. Waste oil and so on.
For raw materials with heavy humidity which is above 12%, you need to install a Dryer before further pelletizing or briquetting. This Air Current Type Dryer can reduce the humidity of wood materials below 12% per time. The Cost of this Air Current Dryer is much lower than Rotary Dryer.
It is professionally designed for drying different kinds of wood sawdust. It has advantages of low cost, low consumption, high capacity, easy operation and maintainace, etc. In addition, the round places of pipes can be changed to any angle which can save space and solve plant dimension limitation.
Operation Principle of biomass dryer:
The whole system consists of fan blower, motor engine, fuel boiler, steel pipe, cyclone and air lock.
In this system, wet material is input into hopper by screw feeder. Fuel furnace produces large volume of hot air. The hot air is driven into steel pipes, mixed with wet sawdust and moved through curving pipes and drying chamber by the power of fan blower. Fast moving hot air sustains and is mixed with raw material sent by spiral feeder in the suspending state through the steel pipe; moisture evaporates as the material traverses along the steel pipe and is rendered dry at the discharge end. Humid air is continuously exhausted, thus the material is dried.
Different type of biomass dryer:
1). Single Stove:
The Moisture reducing rate of the sawdust dryer is 8-12%. This sawdust dryer is equipped with one hot air boiler, it is suitable for drying raw material with moisture content less than 20-25%.If the moisture content of the raw material is higher than that, it will need several times of drying to achieve the requested moisture content for briquetting,palletizing.
This double stove sawdust dryer is a newly developed dryer with two hot air boilers, it is suitable for drying raw material with moisture content of 20% -50%, it can reduce moisture from 20%-50% to 8-12% via only one passage.