循环流化床燃煤锅炉铁基载氧体辅助燃烧性能研究  

Research on the performance of Fe-based oxygen carrier assisted combustion in circulating fluidized bed boilers

作　　者：陈千惠 齐文义 郝代军 李小苗 黄延召 孟学峰 邓向军 Chen Qianhui;Qi Wenyi;Hao Daijun;Li Xiaomiao;Huang Yanzhao;Meng Xuefeng;Deng Xiangjun(Luoyang R&D Center of Technology of SINOPEC Engineering(Group)Co.,Ltd.,Luoyang,Henan 471000)

机构地区：[1]中石化炼化工程(集团)股份有限公司洛阳技术研发中心,河南省洛阳市471000

出　　处：《炼油技术与工程》2024年第10期35-39,共5页Petroleum Refinery Engineering

基　　金：中国石油化工股份有限公司科技开发合同项目(CLY22065)。

摘　　要：双碳目标下,循环流化床(CFB)锅炉技术既是炼化企业极具商业价值和发展潜力的燃煤发电技术,也给炼化企业带来了碳排放问题。随着CFB锅炉技术的发展,锅炉容量日益增大,大型工业CFB锅炉运行过程中由进料、进风的位置和方式带来的空气-燃料混合不良问题逐渐凸显。为提高燃煤CFB锅炉燃烧效率和燃烧稳定性,降低碳排放,基于载氧体辅助燃烧(oxygen carrier aided combustion,OCAC)技术原理,开发了一种Fe基载氧体,并在鼓泡床反应器和0.3 MW/h CFB燃煤反应器上对载氧体性能进行了分析。分析发现,研究开发的Fe基载氧体具有优良的吸氧释氧性能,鼓泡床CO转化率达到88%以上,CFB反应器CO转化率达到52%~65%,烟气中NO_(x)和SO_(2)等污染物排放有所降低。Under the dual carbon target,circulating fluidized bed boilers are not only a coal-fired power generation technology with great commercial value and development potential for refining enterprises,but also the main source of carbon emissions in refining enterprises.With the development of CFB boiler technology and the increasing capacity of boilers,the problem of poor air-fuel mixing caused by the position and method of inletting feedstock and air during the operation of large industrial CFB boilers has gradually become prominent.In order to improve the combustion efficiency and stability of coal-fired circulating fluidized bed boilers and reduce CO_(2) emissions,this study developed an Fe-based oxygen carrier based on the principle of OCAC technology,and analyzed the performance of the oxygen carrier on a bubbling bed reactor and a 0.3 MW/h CFB coal-fired reactor.Fe-based oxygen carrier has excellent performance of oxygen absorption and oxygen release,the CO conversion rate can reach more than 88%on the bubbling bed reactor,and reach 52%~65%on the 0.3 MW/h CFB reactor.The emissions of pollutants such as NO_(x) and SO_(2) in the flue gas have been reduced.

关 键 词：循环流化床 燃煤锅炉 Fe基载氧体 辅助燃烧性能 CO转化率 反应温度 反应时间 过量空气系数 

分 类 号：X74[环境科学与工程—环境工程] TE683[石油与天然气工程—油气加工工程] TQ038[化学工程]