Roller dryer exhaust gas recycling system

2022-03-17 10:08:15

The roller dryer is a very important equipment in the drying process of the raw material wood veneer in the production of plywood.The material of the wood veneer directly affects the quality of the plywood, and the dryness of the veneer determines the bonding state between the layers of the plywood.

The traditional roller dryer uses steam or heat transfer oil to heat the inside of the dryer, and moves the wood veneer in one direction through several upper and lower rollers, thereby evaporating the water in the peeled veneer. drying.

Our dryer adopts a patented biomass burner, which uses the bark and waste wood after wood peeling as fuel. After burning, the hot air is guided to the special flue inside the roller dryer, and passes through the heat exchanger. Convert the exhaust gas of combustion into hot air to dry wood veneer.

In this drying process, a considerable part of the heat is not fully utilized and is lost along with the operation of the fan.By redesigning the air duct and increasing the exhaust gas recovery system, we guide this part of the hot air into a separate drying kiln, specially for some veneers that are not suitable for drying with a roller dryer, thereby improving the drying rate by 20%. Yield.