In sugarcane sugar factories, after extracting sugar from sugarcane juice, the remaining sugarcane bagasse can be used as fuel for power plants or boilers. Sugarcane bagasse usually contains 48% to 52% moisture, and due to the energy consumption required for water evaporation, it can affect its calorific value, so it must be dried. The traditional drying method is to spread wet sugarcane bagasse flat on the ground and air dry it in sunlight, but this method is time-consuming, takes up a large area, and is greatly affected by weather conditions. During the rainy season, this drying method is difficult to implement due to the lack of strong sunlight. Therefore, we have developed a fast and labor-saving sugarcane bagasse drying process that can replace the traditional sun drying process.

Introduction of bagasse drying plant

The sugarcane bagasse drying plant adopts a rotary dryer structure and a high-temperature rapid drying process, which has the advantages of high heat transfer coefficient, high thermal efficiency, and strong processing capacity. Sugarcane bagasse is directly fed into the dryer by the feeding screw and repeatedly picked up and dispersed by the lifting plate on the cooling pipe wall inside the drum. The material is in full contact with the high-temperature medium to complete the heat and mass transfer process. Due to the inclination angle and air guiding effect of the dryer, the material slowly moves from the feeding end, and after drying, it is discharged by the discharge screw. The exhaust gas is discharged into the atmosphere after being removed by the dust collector. Especially the combustion chamber walls are specially designed and manufactured to recover waste heat for drying wet sugarcane bagasse, improving thermal efficiency.

Set up a small-scale bagasse drying plant

Sugarcane bagasse has a moisture content of up to 40% -50%, while as a high-quality fuel, it is usually necessary to reduce the moisture content to around 10% -15%. To establish a small-scale sugarcane bagasse drying device for biofuel production, the following factors need to be considered:

1. Equipment

A sugarcane bagasse dryer system includes a drum, feeding and discharging equipment, a hot blast stove, and a dust collector. If the sugarcane bagasse particle size is too large, a hammer crusher needs to be added to crush the particle size to below 5mm, which can increase the surface area of the raw material, facilitate heat exchange, and prevent uneven drying.

2. Processing capacity

The sugarcane bagasse rotary dryer can dry 1-10 tons of wet sugarcane bagasse in one hour, and each model corresponds to different treatments. It is necessary to choose the appropriate model based on the actual processing capacity, not too large or too small.

3. Heat source

Sugar factory waste heat can be used for steam heating or biomass combustion self-sufficiency. If the factory already has a boiler, boiler flue gas can also be used as a heat source. In addition, natural gas, diesel, and coal can also be used as heat sources, depending on the actual situation.

4. Factory building

The sugarcane bagasse dryer occupies a large area and requires sufficient factory space for storing raw materials and finished products. A new factory can be built based on the production layout plan of the sugarcane bagasse dryer manufacturer, or the existing factory can be sent to the sugarcane bagasse dryer manufacturer to develop a production line layout plan according to the factory layout.

5. Subsequent processing docking

After drying, sugarcane bagasse can be directly used as fuel or processed into biomass pellets, biomass sticks, and biomass charcoal. It is necessary to confirm whether the dried sugarcane bagasse is directly used or sold or connected to downstream biomass pellet machines, biomass stick making machines, and carbonization machines.

If you are looking for a sugarcane bagasse drying solution and believe that Jiutian Company can assist you, please feel free to learn more about our rotary drum dryer and material handling system technology.