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根据某公司烧结机的现场调研测试数据,通过火用计算数学模型对烧结工序各个系统进行火用分析,得出:整个烧结工序不完全燃烧及化学反应等热力过程造成的火用损最大,占43.3%;回收的部分环冷机热废气火用量占6.8%,未回收的烧结排烟废气火用量占19.6%,其中化学火用占17.8%,远大于显热热量火用量;整个烧结系统火用效率较低,为26.23%,其中烧结机部分不可逆损失最大,火用效率只有34.37%。通过这些分析,为下一步烧结节能技术改造提出了建议。
According to the field investigation and test data of a sintering machine in a company, the exergy analysis of each system in the sintering process is carried out by the mathematical model of exergy calculation. It is concluded that the exergy loss caused by the thermal process such as incomplete combustion and chemical reaction in the whole sintering process is the largest 43.3%; part of the recovery of the hot gas circulating gas cooler accounted for 6.8%, unburnt sintered exhaust gas consumption accounted for 19.6%, of which chemical exergy accounted for 17.8%, far greater than the sensible heat heat consumption; the entire sintering system fire The efficiency is low, which is 26.23%, of which the sintering machine part has the largest irreversible loss and the exergy efficiency is only 34.37%. Through these analyzes, suggestions for the technological transformation of sintering energy saving are put forward.