Temperature Soft-sensing of Cement Clinker in Grate Cooler

doi:10.3901/JME.2016.06.159

Abstract

Abstract: Since the temperature of high-temperature cement clinker in grate cooler is very difficult to be measured on line, the control of grate cooler, as well as the heat recovery optimization, have become a big challenge to researchers. In order to solve this problem, a temperature soft-sensing model for clinker layer in grate cooler based on the seepage heat transfer theory of porous media is proposed . Then a flow thermal coupling algorithm is designed to solve the model by combining analytical method and implicit difference method skillfully. Thus the temperature change predictive value of high-temperature cement clinker from inlet to outlet in grate cooler can be gained since the soft-sensing model is solved by the algorithm in the two-way coupling of seepage and heat transfer. Besides, an experimental platform is designed independently to test the cooling tendency for high-temperature clinker accumulation body. The results show that the simulated data is relatively close to the experimental data and the soft-sensing model has a high measurement accuracy for the temperature of cement clinker in grate cooler.

Key words: clinker temperature, grate cooler, seepage heat transfer, soft-sensing model

CLC Number:

TQ172

WANG Meiqi, LIU Bin, WEN Yan, LIU Haoran. Temperature Soft-sensing of Cement Clinker in Grate Cooler[J]. Journal of Mechanical Engineering, 2016, 52(6): 159-165.

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