Study on Recognition of Thermal Efficiency Operating Conditions of Cement Rotary Kiln Based on K-means

The calcination process of cement rotary kiln itself is a complex dynamic reaction process, and at the same time it will be affected by wind, coal, materials and other factors. The operating conditions will fluctuate greatly, which will make the thermal efficiency monitoring, energy consumption control of the entire rotary kiln firing system have become more difficult. In view of the above problems, this paper proposes a K-means-based method for recognizing thermal efficiency operating conditions of cement rotary kiln. By introducing relevant parameters that reflect the thermal efficiency of the rotary kiln: firing zone temperature, coal injection from the kiln head, and main current of the kiln, K-means cluster analysis was performed to find a reasonable range of operating conditions and a typical operating condition template for the rotary kiln was established. This method is of great significance for the thermal efficiency monitoring and energy consumption control of cement rotary kiln.