铁基添加剂调质石灰石用于O_2/CO_2燃煤脱硫的实验研究  

Experimental Study on Desulfurization of Limestone Modified by Iron-based Additives during O_2/CO_2 Coal Combustion

作　　者：李辉[1] 韩奎华[1] 刘洪涛[1] 路春美[1] 

机构地区：[1]山东大学燃煤污染物减排国家工程实验室,山东济南250061

出　　处：《锅炉技术》2013年第1期76-80,共5页Boiler Technology

基　　金：山东大学自主创新基金项目(2010TS020);山东大学研究生自主创新基金项目(YZC11058)

摘　　要：利用水平高温管式炉实验装置探讨了O2/CO2气氛下铁基添加剂调质石灰石燃烧中脱硫特性。实验结果表明:铁基添加剂能改善石灰石的脱硫性能,950℃时氧化铁与二茂铁分别可以将石灰石的脱硫率由56.57%提高到61.97%和70.46%;铁基调质石灰石的脱硫性能受温度、钙铁摩尔比以及煤的含硫量的影响,850℃至950℃燃烧温度内,石灰石的脱硫率随温度升高而升高,氧化铁与二茂铁调质石灰石均在钙铁摩尔比为20时取得最大脱硫率。铁基添加剂可以改善煤的着火和燃烧性能。The desulfurization characteristics of limestone modified by iron-based additives were experimented on a horizontal tube furnace reactor during O2/CO2 coal combustion.The experiment results indicate that iron-based additives can improve the desulfurization characteristics of limestone.The desulfurization efficiency is raised from 56.67%to 61.97% and 70.46% by Fe2O3 and(C5H5)2Fe at 950 ℃ respectively.Temperature,calcium/iron ratio and sulfur content are important factors as for removing SO2.The desulfurization efficiency raises with temperature increases from 850℃to 950℃.The optimal efficiency can be reached as calcium/iron ratio being 20for both Fe2O3and(C5H5)2Fe.Iron-based additives can improve the ignition and combustion characteristics of coal.

关 键 词：O2/CO2 铁基添加剂 脱硫 

分 类 号：TK229.6+6[动力工程及工程热物理—动力机械及工程] O614.81+1[理学—无机化学]