After the sludge dryer dehydrates and dries the sludge, the water content is greatly reduced, and the volume is also very small. After drying, the moisture content of the sludge can be reduced to about 20%, and the volume is reduced accordingly, which is convenient for transportation, utilization or final treatment. Aiming at the characteristics of sludge solidification in the process of sludge drying, the inside of the dryer adopts a multi-channel spiral structure, and changes the structure of the plate structure of the drum dryer. It adopts a combined lifting plate structure and increases the movable purlin the wing plate and self-cleaning device can dry all kinds of sludge and dry all kinds of high viscosity materials.
How we design a high performance sludge drying machine?
- Sludge dryer is a sludge drying equipment specially developed for sludge, which has such characteristics as high moisture, high viscosity, high water holding capacity and low heating value.
- The sludge dryer adopts a new transmission device. Compared with ordinary sludge dryers, it can save nearly 20% of coal consumption and save costs for customers.
- The sludge dryer adopts multi-stage purification and dust removal equipment, which meets and exceeds national environmental protection standards and reduces the equipment’s environmental pollution.
Sludge dryer can dry 90% moisture content to finished product at one time. Aiming at the characteristics of sludge solidification in the process of sludge drying, the structure of the general single-channel dryer has been changed. The combined self-cleaning device has been adopted, which greatly expands the application range of the single-channel dryer. Similar sludge, can also dry a variety of high viscosity materials.
How to dry sludge?
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, which is lifted to the center of the cylinder, and gradually falls to form the material curtain. The high-temperature airflow passes through it, preheating the sludge and evaporating part of the water. When the sludge is spilled and moved to the moving rafter wing, the material is mixed with the preheated rafter wing, which transfers heat to the material and evaporates part of the water. At the same time, the material carried by the wing plate is lifted, dropped, and repeated several times. The material and the hot air flow are convicted and contacted to exchange heat. At the same time, the cleaning device buried in the material also slides down the inside of the arc-shaped lifting plate to clean the material adhered to the inner wall of the lifting plate. After the cleaning device rotates along the vertical line with the cylinder, it is dragged on the back of the arc lifting plate to clean the material adhered to the outer wall of the lifting plate. With the continuous rotation of the cylinder, part of the water is evaporated, and the sludge is further dried. At the same time, the cleaning device also plays a role in crushing the sludge pellets, improving the drying speed, and finally the sludge is dried into a low-moisture loose material and discharged from the discharge port.
Technical Parameters of sludge drying equipment
| Model(m) | Volume（m³) | Temperature（℃ ) | Thickness（mm) | Power（kw） | Induced fan power（kw） | Capacity（t/h） |
| DH 1.2×12 | 13.6 | ≤700 | 12 | 11 | 7.5 | 2.5 |
| DH 1.5×14 | 24.7 | ≤700 | 12 | 15 | 11 | 4-6 |
| DH 1.5×16 | 28.3 | ≤700 | 12 | 15 | 11 | 6-8 |
| DH 1.8×16 | 40.7 | ≤700 | 14 | 18.5 | 15 | 7-12 |
| DH 2.0×20 | 62.8 | ≤700 | 16 | 30 | 22 | 10-16 |
| DH 2.0X22 | 69 | ≤700 | 16 | 30 | 22 | 12-18.5 |
| DH 2.2×24 | 91.1 | ≤700 | 16 | 30 | 22 | 20-25 |
| DH 2.4X24 | 108.2 | ≤700 | 20 | 55 | 37 | 25-30 |
| DH 2.4X28 | 126.6 | ≤700 | 20 | 75 | 55 | 30-35 |
| DH 2.5X24 | 117.7 | ≤700 | 20 | 75 | 55 | 25-30 |
| DH 2.5X28 | 137.4 | ≤700 | 20 | 90 | 75 | 35-40 |