洁净煤技术

2017, v.23;No.111(05) 98-104

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330 MW燃贫煤机组SCR脱硝系统分析及诊断
Analysis and diagnosis of SCR denitrification system in 330 MW lean coal-fired boiler

王民武;孟文宇;任杰;张锴;杨凤玲;程芳琴;
WANG Minwu;MENG Wenyu;REN Jie;ZHANG Kai;YANG Fengling;CHENG Fangqin;Changzhi Thermal Power Company;Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes,Shanxi University;North China Electric Power University;

摘要(Abstract):

为了解决山西某330 MW燃贫煤火电厂SCR脱硝系统存在的脱硝效率偏低、催化剂寿命短的问题,对SCR反应器进行了现场测试,使用烟气分析仪、温度测试仪、流量测试仪等仪器对烟道内烟气组分浓度、温度场、速度场进行检测。测试结果表明,SCR反应器运行过程中存在流场、温度场不均匀的现象,这是导致催化剂磨损严重,进而影响脱硝效率的主要原因。在测量结果的基础上,分析并确定运行过程中的问题根源所在,可为火电厂优化运行与改造提供建议。
To solve the low efficiency and the short life of the catalyst in the SCR denitrification system of a 330 MW coal-fired thermal power plant,field test and analysis were conducted.The flue gas concentration,temperature field and velocity field were measured using flue gas analyzer,temperature test equipment,and flow test instrument etc.The results show that the flow field and temperature field were inhomogeneously distributing during operation.This is thought be the main factor for the low denitrification efficiency and the catalyst abrasion.On the basis of measurement results,the critical issues in the operation process were systematically investigated and confirmed.It provides suggestions for the optimization and operation of the thermal power plant,and offers available reference for the engineering practice and stable operation.

关键词(KeyWords): SCR;烟气脱硝;现场试验;优化运行;催化剂磨损
SCR;flue gas denitrification;field experiment;optimized operation;catalyst abrasion

Abstract:

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基金项目(Foundation): 山西省科技重大专项资助项目(MD2014-03,MD2015-01);; NSFC-山西省联合基金重点项目(U1610245)

作者(Author): 王民武;孟文宇;任杰;张锴;杨凤玲;程芳琴;
WANG Minwu;MENG Wenyu;REN Jie;ZHANG Kai;YANG Fengling;CHENG Fangqin;Changzhi Thermal Power Company;Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes,Shanxi University;North China Electric Power University;

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DOI: 10.13226/j.issn.1006-6772.2017.05.019

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