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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。
As the flue gas treatment capacity of the synthetic waste heat boiler is one of the main limiting factors in the raising of the synthetic furnace, a heat balance iterative algorithm is proposed to calculate the heat balance characteristics of the waste heat boiler by testing and analyzing the heat balance of the waste heat boiler. The calculation results show that the effective heat utilization coefficient and the overall heat transfer coefficient of the waste heat boiler can be regarded as a constant under the steady operation condition of the normal continuous production of the synthesis furnace. The logarithmic mean temperature difference can regress to a linear relationship with the outlet flue gas temperature. Heat balance iterative algorithm, the relationship between the maximum flue gas quantity and the flue gas temperature at the outlet of the waste heat boiler is obtained when meeting the technological requirements. The calculation results show that the algorithm can predict the thermal performance of the waste heat boiler, which is favorable for the stable production of the copper synthesis furnace, effect.