火电厂SCR脱硝系统故障分析及处理
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摘要
为降低火电厂SCR脱硝系统故障发生率,分析总结了故障发生的原因并进行了相应处理。结果表明:疏通供氨系统管道、优化喷氨调节阀自动调节逻辑、提高喷氨均匀能性等措施使SCR脱硝系统运行的安全性和经济性得到提高。
To lower the frequency of SCR de-NO_x system malfunctions, an analysis was conducted on the reasons leading to the faults, with effective measures put forward. Results show that the safe and economical operation of an SCR de-NO_x system in thermal power plant could be guaranteed when following measures are taken, like dredging the ammonia supply pipes, optimizing the automatic adjustment logic and improving the evenness of ammonia injection, etc.
To lower the frequency of SCR de-NO_x system malfunctions, an analysis was conducted on the reasons leading to the faults, with effective measures put forward. Results show that the safe and economical operation of an SCR de-NO_x system in thermal power plant could be guaranteed when following measures are taken, like dredging the ammonia supply pipes, optimizing the automatic adjustment logic and improving the evenness of ammonia injection, etc.
引文
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[7] 杨博,林坚辉,曾壁群.SCR脱硝技术在3 033 t/h锅炉上的应用和改进[J].发电设备,2014,28(1):66-69.
[2] 侯剑雄,洪小飞,廖世宁,等.超临界燃煤锅炉实NOx超低排放的研究与实践[J].发电设备,2017,31(5):348-352.
[3] 马立阁.燃煤电站烟气SCR脱硝控制系统改进[J].发电设备,2016,30(3):211-214.
[4] 武宝会,崔力.火电厂SCR烟气脱硝控制方式及其优化[J].热力发电,2013,42(10):116-126.
[5] 张树利,董务明,姚舜.锅炉空气预热器堵灰原因及对策[J].发电设备,2014,28(5):259-363.
[6] 邓均慈,李德波.某电厂SCR脱硝催化剂严重磨损原因分析[J].热能动力工程,2014,29(5):581-602.
[7] 杨博,林坚辉,曾壁群.SCR脱硝技术在3 033 t/h锅炉上的应用和改进[J].发电设备,2014,28(1):66-69.