铜精炼炉最优测温点研究

铜精炼炉内,热电偶安装位置直接影响热电偶测温性能和炉温辨识精度。越靠近炉内壁,炉温辨识精度越高,但热电偶测温漂移随之增加。在研究了优化试验设计理论以及热电偶测温特性的基础上,提出一种炉温测量优化定位指标,以确定优化的热电偶安装位置。根据铜精炼炉多层炉墙结构和傅立叶定理,建立炉墙水平厚度方向非线性瞬态导热模型;在Comsol Multiphysics和Matlab环境下进行了有限元仿真试验,研究模型的传热特性;通过仿真计算得到炉墙内测温优化定位指标值分布曲线和最优测温位置。

Study on Optimal Location Problem of Temperature Sensor in Copper Refining Furnace

The position of thermalcouple’s installition in copper refining furnace directly affects its measurement performance and temperature identification precision.The closer to the inside wall it’s placed,the more precisely temperature is measured,however,thermocouple’s temperature drift error will increase.Based on investigating optimum experimental design theory and thermocouple characteristics,temperature measurement optimum location criterion is presented to determine an optimal location.A nonlinear transient heat transfer model of copper furnace wall in the horizontal direction was established based on the Fronier theory and multi-layer wall characteristics.A FEM simulation was conducted based on Comsol Mutipfysics and Matlab softwares to understand wall heat transfer characteristics.Finally,the criteria distribution was calculated to find out the optimal measurement position in the minimum point by the simulation calculation.