燃煤电站SCR催化剂寿命在线预测研究  

Research on SCR catalyst service life on-line prediction in coal-fired power plants

作　　者：胡小夫 王云 郝正 沈建永 王桦 HU Xiaofu;WANG Yun;HAO Zheng;SHEN Jianyong;WANG Hua(China Huadian Engineering Corporation Limited,Beijing 100070,China)

机构地区：[1]中国华电科工集团有限公司,北京100070

出　　处：《华电技术》2021年第3期65-69,共5页HUADIAN TECHNOLOGY

基　　金：中国华电科工科技项目(CHECKJ20-01-03,CHECKJ19-01-08)。

摘　　要：选择性催化还原技术(SCR)催化剂作为脱硝系统的核心,其催化性能直接影响着系统的脱硝效率,但在实际运行过程中催化剂会缓慢失活,催化剂的寿命决定着SCR脱硝系统的运行成本。通过对SCR催化剂寿命进行在线预测,使电厂及时掌握催化剂的失活程度和剩余使用寿命,有利于提高该系统的经济性和稳定性。根据催化剂活性模型和催化剂失活模型,通过对催化剂失活曲线进行修正,提出了SCR催化剂寿命在线评估方法。该评估方法对某电厂SCR催化剂的物化性能和部分运行数据进行分析,绘制出SCR催化剂的寿命在线预测曲线,并结合年检数据验证了该在线预测系统具有较高的准确性,可以在各电厂中广泛推广使用。As the core of SCR denitration system,the catalyst directly affects the denitration efficiency of the system.But catalyst will gradually deactivated during operation.The catalyst service life determines the operation cost of SCR denitration system.Through on-line prediction on SCR catalyst service life,a power plant can master the deactivation degree and remained service life of its catalyst in time,which is beneficial to improve the economy and stability of the system.Based on the catalyst activity model and catalyst deactivation model,by modifying the catalyst deactivation curve,an SCR catalyst life cycle on-line prediction method was proposed.The physical and chemical performance,and partial operation data of the SCR catalyst in a power plant were analyzed by this evaluation methods,and life cycle prediction curve of the SCR catalyst was obtained.Compared with the annual inspection results,it is verified that the on-line prediction system is of high accuracy and can be widely applied in power plants.

关 键 词：电厂 SCR 脱硝 催化剂 失活 寿命管理 预测 平台 

分 类 号：TQ426[化学工程] X701[环境科学与工程—环境工程]