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Airflow Sawdust Dryer-Pipe Type

The airflow sawdust dryer, also called pipe dryer or flash dryer for sawdust , is professionally designed for drying materials like sawdust, rice hull, wood chips, wood shaving, wheat straw, and corn stalks, paddy straw etc.. Moisture in the raw materials of less than 40% can be drying one time to meet the requirement for wood pellets production.

Airflow sawdust dryer adopts impulse airflow drying principle to prolong the drying time to get a fast and efficient drying effect. This drying machine is specially designed for small particle materials and power materials. The biggest size limited to the raw materials is 5mm. With efficient, continuous and rapid drying effect, airflow sawdust dryer is widely used in food, feed, chemical, pharmaceutical and mine industries.

For pelletizing or briquetting making, the requirement for raw material moisture is below 13% While the raw material is usually higher a lot. Herein, you need pipe dryer, also known as hot flue impulse type dryer or hot air dryer. It can reduce the moisture from 40-45% to 8-12% one time. In addition, airflow sawdust dryer is considered as the most inexpensive sawdust dryer.

Airflow sawdust dryer have been exported to many foreign countries, such as Korea, Malaysia, Nigeria, Ghana, Saudi Arabia, South Africa, Indonesia, Philippines, Chile, Canada, etc.

Working Principle of Airflow Sawdust Dryer

Sawdust flash dryer includes heating stove, pipes, fan, and cyclone. It is also called airflow dryer or pipe dryer. Wet sawdust enters the airflow dryer through the feeding hopper, they are mixed with the hot air by the airflow force of the electric fan. Sawdust flows through the curved pipes and finally enters the cyclone. At last, water vapor of sawdust is taken out by the hot air and expelled out from the up outlet of the cyclone, and sawdust is discharged from the down outlet. The whole drying process only needs 3-5 seconds.

Sawdust Flash Dryer Application

Airflow sawdust dryer is widely used in wood pellet fuel, straw briquette fuel, charcoal machinery, sawdust briquettes, and agricultural engineering industries. For example, the drying of agricultural fiber materials such as corn straw, soybean straw, cotton stalks, wheat straw, sorghum stalks, sawdust , wood shavings, ginkgo leaves, mulberry leaves, etc.

  • 1. Drying the wet saw dust into optimal moisture (8-14%) for making wood briquettes.
  • 2. Drying the biomass material to the moisture (8-17%) for making biomass wood pellets
  • 3. Drying the wet wood flour into best moisture(below 3%) for making WPC products
  • 4. Essential drying equipment in wood pellet plant and biomass briquetting plant.

Parameters of Airflow Sawdust Drying Machine

ModelStove No.Power (kw)Capacity (kg/h)Material sizeDimension (m)Weight(kg)
BLF-IOne stove4300-400≤5mm2.44*1.72*1.91960
BLF-IIOne stove7.5+1.5+0.75600-700≤5mm2.45*1.72*1.91
BLF-IIIOne stove11+1.5+0.75800-900≤5mm2.45*1.72*1.91
BLF-IVTwo stoves5.5+1.5300-400≤5mm2.44*1.23*1.9
BLF-VTwo stoves7.5+1.5400-500≤5mm2.44*1.23*1.9
BLF-VITwo stoves11+1.5+0.751000-1200≤5mm2.45*1.72*1.91
BLF-VIITwo stoves15+1.5+0.751100-1300≤5mm2.45*1.72*1.91

Advantages Of Sawdust Flash Dryer

  • 1. The sawdust dryer can quickly reduce the moisture of the material to less than 10%, which is convenient for subsequent work, such as making wood pellets and biomass briquettes.
  • 2. When using a sawdust dryer, a fan and a cyclone dust collector are usually used together to collect the dried granular materials to avoid dust pollution and keep the production workshop clean.
  • 3. Our sawdust dryers come in many models and specifications. We can recommend the most suitable dryer model for customers according to the types of customers’ materials, moisture content and processing requirements. We can also customize the appropriate sawdust dryer according to customer needs.

Features Airflow Sawdust Dryer

  • 1. Airflow sawdust dryer adopts the impulse airflow drying principle, making the drying procedure efficient and rapid. The time only takes 0.5-5 seconds. No harm to wood material.
  • 2. High heating intensity. Due to the high hot air speed, every particle can get fully drying.
  • 3. Large drying ability and low equipment investment. The drying capacity is from 50kg/h to 1500kg/h to satisfy different drying demand for wood pellets processing.
  • 4. Airflow sawdust dryer is with features of compact structure , smooth operation, high reliability.
  • 5. Easy to operate and easy to maintain. We supply Perfect after-sales service.
  • 6. Wide Application. It is right for material drying for charcoal briquetting, pelletizing, wood chips and sawdust production
  • 7. Wide range of hot air source: oil burner, gas stove, hot air coal furnace and vapor heat exchanger.
  • 8. The pipes of dryer can be changed to any angle based on the production field, less floor area and easier installation.

Airflow Dryer VS Drum Dryer

Airflow dryer and drum dryer are both common equipment for drying sawdust and rice husk, but these two dryers are very different in appearance, structure, and working principle.

Airflow Dryer Main Structure And Functions

Airflow sawdust dryer machine, also known as a hot air duct dryer, is mainly composed of a series of pipes and pulse tubes. The machine should be connected with a combustion furnace and a cyclone dust collector in actual work.

The airflow dryer uses the principle of hot air to dry the materials instantly, and the hot air of the combustion furnace is extracted into the pipeline through the fan, which is fully mixed with the materials inside to achieve the purpose of rapid drying.

The machine has certain requirements for the size of the material to be dried. Rice husks with a length of less than 5mm and a diameter of less than 3mm, wood shavings, sawdust, wood chips, etc. can be dried. The diameter of the sawdust dryer pipe and the size of the fan determine the size of its processing capacity.

Drum Dryer Main Structure And Functions

The sawdust dryer has a cylindrical structure. The main parts include a combustion furnace (self-built or purchased), a feed port, a rotating drum, a built-in scraper, a cooling drum, a reduction motor, a fan, and a dust collector. The rotating drum of the machine is placed on the roller.

The roller is driven by the motor and deceleration drive to rotate the rotating drum at a low speed. When working, the fan will draw the hot air from the furnace into the drum. The material will be fully mixed with the hot air when turning in the drum to achieve the drying effect.

The drum diameter and length of the tumble dryer can be customized, and the size requirements of the materials are not strict. Therefore, the machine has a high drying efficiency and a wide range of applications. In addition to drying sawdust and rice husk, it can also It is used in industry to dry granular materials such as sand and coal slime.

Why Need Sawdust Dryer for Bio Pellets Production?

To get the superior quality of biomass pellets or briquettes with high density, it is necessary to control the moisture of material at 8-12% exactly before the sawdust is fed into the wood pellet mill. Actually, this moisture content of your sawdust will be a little higher or lower. Too high moisture content in your sawdust will make your wood pellets production failed, and then the wood pellets or wood briquette will be in low density and easy to be broken. Our airflow sawdust dyer makes a great compliment for use with a small wood hammer mill and wood pellet mill.

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