630MW对冲旋流燃烧锅炉低氮燃烧系统优化改造  

Retrofit of Low Nitrogen Combustion System of a 630 MW Opposed-firing Boiler with Swirl Burner

作　　者：邹磊[1] 张恩先[1] 岳峻峰[1] 

机构地区：[1]江苏方天电力技术有限公司,江苏南京211102

出　　处：《锅炉技术》2015年第2期65-69,共5页Boiler Technology

摘　　要：针对某电厂1台630 MW前后墙对冲旋流燃烧锅炉NOx排放质量浓度高的问题,对燃烧系统进行了改造,采用Aire JetTM燃烧器替代原低NOx轴向旋流燃烧器(LNASB)。改造后测试结果表明:在600 MW、500MW和400 MW电负荷工况下,锅炉NOx排放质量浓度分别为352 mg/m3、327 mg/m3和238 mg/m3,相比于改造前,降幅达到50%以上;锅炉热效率分别为93.90%、93.93%和94.05%,略低于改造前测试值。改造后飞灰含碳质量分数略有上升,炉内结渣较改造前明显减轻。In order to reduce NOxemission of a 630 MW opposed-firing boiler with swirl burner in a power plant,technical retrofit of low NOxcombustion had been carried out by using Aire JetTMburner to replace the original LNASB burner. The test results after retrofit showed that at 600 MW,500 MW and 400 MW,the mass concentration of NOxemission was 352 mg / m3,327 mg /m3 and 238 mg / m3,respectively. The mass concentration of NOxemission declined by more than 50% compared with the test results before retrofit. The boiler efficiency,slightly lower than the test results before retrofit,was 93. 90%,93. 93% and 94. 05%,respectively. After retrofit fly ash carbon content increased slightly and furnace slagging was reduced significantly.

关 键 词：对冲燃烧锅炉 AireJetTM燃烧器 低NOx技术改造 NOX排放 结渣 

分 类 号：TK223.2[动力工程及工程热物理—动力机械及工程]