铜合成炉余热锅炉热平衡测试与分析

Testing and Analysis of the Heat Balance of a Copper Synthesizer Waste Heat Recovery Boiler

由于合成炉余热锅炉的烟气处理能力是合成炉提产的主要限制因素之一,通过对合成炉余热锅炉进行热平衡测试与分析,提出一种热平衡迭代算法计算余热锅炉的热平衡特性。计算结果表明:在合成炉处于正常连续生产的稳定工况下,余热锅炉有效热利用系数和综合换热系数可以视为常数;对数平均温差与出口烟气温度关系可回归为线性关系;通过热平衡迭代算法,得出满足工艺要求时合成炉最大烟气量与余热锅炉出口烟气温度的关系,计算结果显示采用该算法能预测余热锅炉热力性能,有利于铜合成炉稳定生产,提产增效。

The flue gas treatment capacity of a copper synthesizer waste heat recovery boiler is regarded as one of the main factors limiting the enhancement of the yield of the synthesizer. Through a heat balance testing and analysis of a synthesizer waste heat recovery boiler,proposed was a heat balance iterative algorithm for calculating the heat balance characteristics of a waste heat recovery boiler. The research results show that when the synthesizer is under the continuous and stable operating condition,the effective heat utilization coefficient and comprehensive heat exchange coefficient of the waste heat recovery boiler can be regarded as constants and the logarithmic mean temperature differ-ence can be regressed to a linear relationship with the flue gas temperature at the outlet. The heat balance iterative algorithm was adopted to obtain the relationship between the maximum flue gas flow rate of the synthesizer and the flue gas temperature at the outlet of the waste heat recovery boiler when the requirements for the process were met. The calculation results show that the algorithm in question can be used to predict the thermal performance of the waste heat recovery boiler,thus contributing to a stable production,yield and efficiency enhancement of the copper synthesizer.