烧结矿余热回收竖罐热工参数确定方法及其应用

Determination method of thermal parameters of vertical tank for sinter waste heat recovery and its application

烧结矿余热回收竖罐热工参数的确定是保证竖罐式余热回收技术工程化实施效果的关键因素之一。针对烧结矿余热回收装置热工参数研究不足的问题,提出了以罐体出口热载体焓为判据的竖罐热工参数确定方法;以某年产260万t烧结机为实例,采用解析计算方法确定了竖罐适宜热工参数。热工参数确定的核心在于,首先确定竖罐热工参数范围,进而采用正交试验获得适宜热工参数组合。以单罐为例,计算实例的气固水当量比为1.06,冷却段直径为9.0 m,冷却段高径比为1.0,出口热载体焓为21.33 MW。

The determination of thermal parameters of the vertical tank for the sinter waste heat recovery is one of the key factors to ensure the engineering implementation of the vertical tank waste heat recovery technology. The insufficient research on the determination of thermal parameters of the sinter waste heat recovery equipment was focused on,and a determination method of thermal parameters of the vertical tank was proposed based on the enthalpy exergy of the outlet heat carrier. With a domestic 2.6 million t/a sintering machine as a research object,suitable thermal parameters of the vertical tank were obtained through the analytical calculation method. The main process of the determination of thermal parameters is summarized as following：Ranges of thermal parameters meet the temperature requirements of the vertical tank process are determined firstly,and the orthogonal test is designed to obtain suitable thermal parameters of the vertical tank. Based on the single tank,thermal parameters of calculation example are that the gas-solid water equivalent is 1.06,the cooling section diameter is 9.0 m,the height diameter ratio is 1.0,and the enthalpy exergy of the outlet heat carrier is 21.33 MW.