Application of steam injection in iron ore sintering:fuel combustion efficiency and CO emissions
作者机构：School of Metallurgical EngineeringAnhui University of TechnologyMa’anshan 243032AnhuiChina Department of Chemical/Biochemical EngineeringWestern UniversityLondon N6A 5B9OntarioCanada Key Laboratory of Metallurgical Emission Reduction&Resources Recycling(Anhui University of Technology)Ministry of EducationMa’anshan 243002AnhuiChina
出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)
年 卷 期：2023年第30卷第1期
页 面：31-39页
核心收录：
学科分类：0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0806[工学-冶金工程] 080601[工学-冶金物理化学]
基 金：support from the National Natural Science Foundation of China (NSFC) (Grant No.52174290) the China Scholarship Council (CSC)via the Joint-Training Ph.D.Program (Grant No.202008340093)for supportingthis research
主 题：Sintering Steam injection Fuel Combustion efficiency CO emission
摘 要：Improving the combustion efficiency of fuels is essential to reducing pollutant emissions in the iron ore sintering *** sintering bed surface steam-injection technology has attracted significant research interest for its potential advantages in low-energy consumption and low *** effect of steam injection on fuel combustion efficiency and CO emission was studied by comparing the thermodynamic response from the sintering process before and after steam *** mechanism of improving combustion efficiency was also *** results indicated that the sintering gas medium of H_(2)O-H_(2)-N_(2)-O_(2) with the blown steam improved the heat transfer conditions of fuel combustion and promoted the water gas *** optimum state of steam injection was achieved at 15 min after ignition with 0.02 m^(3) min^(-1).The CO emission reduction is 10.91% compared with the base *** combustion efficiency was 88.83%,6.15% higher than conventional sintering,and the solid fuel consumption was reduced by 1.15 kg t^(-1).It was indicated that steam injection would improve combustion efficiency and reduce solid fuel ***,the steam injection could improve the combustion kinetic conditions in the zone of unburned fuel and low oxygen partial *** was conducive to the reaction of H_(2)O with C and CO to convert the CO of reducing atmosphere to CO_(2),which in turn realized the complete combustion of fuel and CO and improved the efficiency of fuel combustion.
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