Fe_2O_3为载氧体的煤/秸秆化学链燃烧循环特性研究  

Study on Cycling Performance of Coal/Straw Blending Chemical Looping Combustion with Oxygen Carrier Fe_2O_3

作　　者：狄海生[1] 王翠苹[1] 张家斌 张淑娟 黄飞 

机构地区：[1]青岛大学能源工程研究所,青岛266071 [2]潍坊市节能监察中心,潍坊261061 [3]中石化安全工程研究院,青岛266071

出　　处：《动力工程学报》2013年第11期902-906,共5页Journal of Chinese Society of Power Engineering

基　　金：山东省自然科学基金资助项目(ZR2010EM004);青岛市建委科技发展计划资助项目(JK2011-6)

摘　　要：对煤、秸秆与Fe2O3以不同质量掺混比混合后化学链燃烧过程中载氧体还原/再生的多循环反应特性进行了研究,重点分析了固体燃料带入的灰分对化学链反应速率的影响以及秸秆的掺入对化学链反应的改善.结果表明:载氧体Fe2O3质量掺混比的增大有利于化学链反应的进行,燃烧起始反应温度降低;Fe2O3作为载氧体受灰分积累的影响较大,其可持续循环能力较差;煤中掺入秸秆改善了煤的化学链燃烧特性,提高了燃烧反应速率和载氧体的再生反应速率.Multi-cycle reduction/oxidization characteristics of oxygen carrier Fe2O3 were studied during the chemical looping combustion （CLC） of coal-straw-Fe2O3 mixtures in different blending ratios,with focus on the influence of ash content brought in by solid fuel on the reaction rate of chemical looping,and on the improvement effect of straw on the chemical looping reaction.Results show that the chemical looping reaction can be improved by increasing the mass ratio of oxygen carrier Fe2O3,when the initial reaction temperature is lowered; ash content plays a negative role in influencing the cycleability of the oxygen carrier Fe2O3 ; the addition of straw helps to improve the CLC property of coal,which results in both improved combustion reaction rate and increased regeneration reaction rate of the oxygen carrier.

关 键 词：煤 秸秆掺混 化学链燃烧 Fe2O3 多循环 

分 类 号：TK16[动力工程及工程热物理—热能工程]