Improvement measures for ineffective lime cooler
The outlet material temperature of the lime cooler is too high, which can cause thermal deformation of downstream conveying equipment, scalding of packaging materials, and storage safety hazards. The core limiting factors for its cooling effect are the heat exchange efficiency between the gas-solid phase and the residence time of the material. Improving efficiency requires multidimensional optimization from the perspective of system integration.
Low heat transfer efficiency often stems from insufficient contact between the cooling medium and lime particles. Improving the air duct design is key, optimizing the single-sided air intake to evenly distribute air, ensuring that cold air penetrates the entire material layer, and avoiding the formation of "ventilation dead zones" due to airflow short circuits. Choosing a reasonable wind chamber inclination angle and aperture ratio is the technical key to achieving uniform airflow distribution. At the same time, calculate and match the air volume with the full pressure of the fan to ensure the ability to overcome material layer resistance and carry heat.
The residence time of materials in the cooler directly determines the degree of cooling. For rotary coolers, the cylinder speed can be adjusted to change the material filling rate; For vertical gravity coolers, it is necessary to optimize the internal plate structure and angle to guide the lime particles to form a uniform material curtain instead of disorderly falling. Extend the effective heat exchange path to allow sufficient time for the hot lime to release heat to the cold air.
The insulation and sealing performance of the equipment itself have a significant impact on the cooling effect. The surface heat dissipation of the cylinder or box not only wastes energy, but also reduces the temperature difference that drives heat exchange. The use of high-performance insulation materials for external insulation is a necessary measure. At the same time, the sealing device at the junction of movement and stillness must be intact to prevent a large amount of cold air from being short circuited and sucked in from areas where it should not have entered, which will seriously disrupt the preset airflow and temperature fields of the system. Through systematic improvement, the thermal performance and operational reliability of the cooler can be significantly enhanced.
