Annular Cooler
The annular cooler is an important piece of equipment in the pellet production process, known for its extensive use in pellet cooling. It serves two primary functions. It rapidly cools high-temperature oxidized pellets after they exit the rotary kiln, lowering their temperature for easier handling and further processing. Additionally, it plays a vital role in the overall process system's heat balance by recovering heat from the hot pellets for pre-heating, reducing the entire system's fuel consumption.
Constructed with precision, the annular cooler comprises several key components: a driving mechanism, rotating parts, support rollers, side retaining rollers, pressure rails, a frame, bellows, and a cover. Its design features a dual-drive system to ensure synchronized operation across the equipment. Additionally, an auxiliary drive mechanism is incorporated to maintain low-speed operation, safeguarding the equipment in the event of a malfunction. The rotating section is the cooler's core, enabling efficient material transfer from the inlet to the outlet, including the discharge of materials. This design ensures a seamless and efficient cooling process, essential for the high-quality production of pellets while maintaining energy efficiency and operational reliability.
| Effective Cooling Area (m²) | 35 | 50 | 69 | 90 | 121 | 150 | 248 |
| Capacity (t/h) | 78 | 125 | 152 | 190 | 270-304 | 310-385 | 630-700 |
| Intermediate Diameter (m) | Ø12.5 | Ø12.5 | Ø12.5 | Ø15 | Ø18.5 | Ø22 | Ø25 |
| Trolley Width (mm) | 1320 | 1800 | 2200 | 2400 | 2500 | 2500 | 3750 |
| Number of Trolley | 28 | 28 | 28 | 28 | 45 | 45 | 40 |
| Material Thickness (mm) | 760 | 760 | 760 | 760 | 760 | 800 | 850 |
| Installation Power (kW) | 2×11 | 2×11 | 2×11 | 2×11 | 2×15 | 2×15 | 2×22 |
- Users can choose from various sealing solutions, including water seals, sand seals, heat-resistant rubber, and labyrinth seals. This diversity allows for customization of the cooler to specific operational conditions.
- Using multiple sealing styles in tandem enhances energy conservation, emissions reduction, and the reuse of residual heat, aligning with sustainability goals.
- Unlike belt coolers, annular coolers require less floor space, offering cost savings on investments and higher equipment utilization rates.
- This feature improves the operational stability of the equipment and reduces the likelihood of misalignment, ensuring smoother operations.
- Equipped with speed detectors, these coolers facilitate production adjustments and control, making them adaptable to changing operational needs.
- A built-in leveling device helps even out material distribution, preventing air shortcutting and enhancing cooling efficiency, ensuring optimal performance.
