选择性催化还原脱硝技术与蓄热式换热技术联合应用方案分析  

Analysis of Schemes Combining Selective Catalytic Reduction DeNOx Technology and Regenerative Heat Exchange

作　　者：田中君[1] 靳世平[1] 黄素逸[1] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《石油化工设备》2014年第5期72-76,共5页Petro-Chemical Equipment

基　　金：湖北省中小企业创新基金资助项目(10C26214204555)

摘　　要：以同时回收烟气余热并脱除氮氧化物为目的,提出了用于工业加热炉和电厂锅炉换热与脱硝联合应用的方案,包括选择性催化还原技术与工业炉用高温空气燃烧烧嘴的组合、与燃煤锅炉用回转蓄热式或者固定蓄热式空气预热器的组合。分析了这些方案的优劣,建议在不同温度区采用具有不同温度窗口的催化剂,尽量减小烟气与还原剂氨的混合空间。通过蓄热式换热数学模型预测了某电厂锅炉改造方案的可能性。In order to recover heat of flue gas and remove nitrogen oxides （NOx） simultaneously,the heat exchange and NOx removal coupled schemes are proposed for industrial furnaces and plant boilers.The coupled schemes include the combinations of selective catalytic reduction （SCR） reactors with high temperature air combustion （HiTAC） burners for furnaces and with fixed-or rotary-matrix regenerative air preheaters for coal-fired boilers.These schemes are analyzed,and some ideas are suggested,such as catalysts with different temperature windows should be prepared for suitable temperature regimes,the mixed space for flue gas and ammonia should be decreased as far as possible.The feasibility of reconstruction design for a boiler of a plant is predicted numerically in conjunction with regenerative heat exchange mathematical model.

关 键 词：烟气余热回收 高温空气燃烧 选择性催化还原 氮氧化物 脱硝 

分 类 号：X701.3[环境科学与工程—环境工程] TQ050[化学工程]