Safety protection measures for high-temperature operation areas in lime kilns
The high-temperature working environment of lime kilns (800 ℃ -1200 ℃) poses multiple risks such as thermal radiation, burning, dust, and harmful gases, and requires the construction of a protective system through multidimensional technical means. A 100mm thick aluminum silicate fiber felt should be laid on the surface of the kiln body, covered with a 304 stainless steel protective plate to reduce the surface temperature to ≤ 60 ℃ and minimize accidental contact injuries. An infrared thermal imaging device is installed in the burner area to monitor the flame shape and temperature distribution in real time. An interlock shutdown is triggered when there is abnormal fluctuation (Δ T>50 ℃/min).
The air supply duct adopts a double-layer insulation structure (inner layer ceramic fiber+outer layer rock wool), with an air temperature loss rate of ≤ 8%, ensuring stable air temperature entering the kiln. The personnel operation area is equipped with a local forced ventilation system with a ventilation rate of ≥ 15 times/h, combined with a CO concentration sensor (range 0-1000ppm, accuracy ± 5ppm). When the limit is exceeded (>50ppm), the exhaust will automatically start.
The high-temperature protection of lime kilns requires the integration of material insulation, intelligent monitoring, ventilation and purification technologies, and the formation of closed-loop management through thermal radiation control, temperature interlocking, gas monitoring and other means. Strictly selecting high-temperature resistant materials, deploying high-precision sensors, and optimizing ventilation design can effectively reduce risks such as burning and poisoning, ensuring safe operations and stable equipment operation.
