Sludge dryer can be widely used in activated sludge drying, sewage sludge drying, petrochemical sludge drying, paper sludge drying, printing and dyeing sludge drying, tanning sludge drying, electroplating sludge drying, municipal sludge drying, Drying of various sludges such as biological fermentation bacteria residues and high-humidity materials such as various slags.
With the strengthening of the country's economic strength and the improvement of national awareness of environmental protection, the urban sewage treatment industry has developed rapidly, and the output of urban sludge is increasing day by day. The disposal and development and utilization of sludge are increasingly concerned. The sludge of rivers and canals with many kinds of microorganisms has been neglected by people for a long time, and it also brings many problems to urban environmental governance. The sludge dryer developed by Nanjing Group Heavy Machinery can dry the sludge, which is convenient for the production of sludge bio-organic fertilizer. It is the preferred drying equipment for organic fertilizer manufacturers. The drying treatment of sludge makes it possible for the sludge to be used in agriculture, as a fuel, incineration, and even to reduce landfill sites.
Performance characteristics
The sludge sludge dryer is mainly composed of an induced draft fan, a feeder, a feeder, a rotary drum, a heat source, a discharger, an unloader and a power distribution cabinet. Therefore, the working area of the sludge dryer includes a discharge area, an inclined lifting plate area, a cleaning area, and a material guide area.
working principle
The sludge dryer can dry materials with 80% water content to finished products at one time. Aiming at the characteristics of easy agglomeration and agglomeration during the sludge drying process, the material plate structure of the general single-channel dryer is changed, and the combined self-cleaning device is adopted, which greatly expands the application range of the single-channel dryer. It can also dry various high-viscosity materials.
The sludge enters the guide plate of the dryer from the feeder through the chute. With the rotation of the cylinder, the sludge is guided to the inclined lifting plate and then lifted to the center of the cylinder, gradually falling to form a material curtain , The high-temperature air flows through it to preheat the sludge and evaporate part of the moisture. When the sludge is spilled and moved to the movable grate wing, the material is mixed with the preheated grate wing, which transfers heat to the material and evaporates part of the water. At the same time, the material entrained by the wing plate is lifted and scattered, repeated many times, and the material conducts convection and contact heat exchange with the hot air flow. At the same time, the cleaning device buried in the material also slides down the inner side of the arc-shaped lifting plate to clean the material adhering to the inner wall of the lifting plate. When the sweeping device rotates along the vertical line with the cylinder, it is dragged on the back of the arc hoisting plate to clean up the materials adhered to the outer wall of the hoisting plate. With the continuous rotation of the cylinder, part of the water evaporates and the sludge is further dried. At the same time, the sweeping device also played a role in breaking up the sludge pellets, increasing the drying speed, and finally the sludge was dried into loose materials with low moisture and discharged from the discharge port.
