“链-回-环”系统能质平衡核算及优化  

Calculation and optimization of energy-mass balance of"chain grate-rotary kiln-ring cooler"system

作　　者：路明 刘旭 刘征建[2] 王耀祖 张建良[2] 陈舒月 Lu Ming;Liu Xu;Liu Zhengjian;Wang Yaozu;Zhang Jianliang;Chen Shuyue(Dagushan Pelletizing Plant,Ansteel Group;University of Science and Technology Beijing)

机构地区：[1]鞍山钢铁集团有限公司大孤山球团厂 [2]北京科技大学冶金与生态工程学院 [3]北京科技大学人工智能研究院

出　　处：《冶金能源》2024年第5期8-12,共5页Energy For Metallurgical Industry

基　　金：国家自然科学基金资助项目(52374319)。

摘　　要：文章以某球团厂200万t“链—回—环”系统为例,根据现场采集到的生产数据,核算得到该系统的热利用率为22.36%,余热回收率为71.62%。优化后得到当喷煤量在5.00~5.40 t/h,煤粉固定碳含量在76%~82%,煤粉燃尽率在97.5%以上时,预热Ⅱ段氧含量可以稳定在14.0%~16.0%,有利于球团矿的氧化且能有效抑制氮氧化物的生成。The paper calculates and optimizes the energy-quality balance of the 2 million t"chain grate-rotary kiln-ring cooler"system in a Pelletizing Plant,according to the data collected on site,the heat utilization rate of this system is 22.36%,the waste heat recovery rate is 71.62%.Optimized when the amount of coal sprayed is 5.00~5.40 t/h,the fixed carbon content of pulverized coal is 76%~82%,the burn-out rate of pulverized coal is above 97.5%,the oxygen content of preheating section II can be stabilized at 14.0%~16.0%,which is conducive to the oxidation of pellet ores and the effective suppression of nitrogen oxides generation.

关 键 词：链篦机—回转窑—环冷机系统 能质平衡核算 优化操作 

分 类 号：TF046.6[冶金工程—冶金物理化学]