2018年第3期（总第243期）
doi:10.3969/j. issn. 1009 3230. 2018.03.006
应用能源技术
21
循环流化床锅炉掺烧污泥的氮氧化物超低排放研究
韩立鹏"，2，刘冠杰"2，张建东"2，孙剑”，王利勇"，张译”，郭安",2
（1.中国华能集团清洁能源技术研究院有限公司，北京102209；2.国家能源煤炭清洁低碳发电技术研发实验中心，北京102209;3.华能苏州热电有限责任公司，苏州215129）
摘要：对某240/h循环流化床锅炉开展了污泥协同掺烧研究、低氮燃烧调整试验和脱确系统优化。结果显示：污泥掺烧比例6%以下，对锅炉燃烧氮氧化物生成量无明显影响。随着烟气氧量增加锅炉燃烧氮氧化物生成量显著增加，飞灰和底渣的含碳量随风室静压的增加而升高。锅炉低氮燃烧调整试验后，脱硝剂消耗量明显下降，锅炉高负荷节省脱硝剂17.1L/h，低负荷节省脱确剂46.9L/h，NOx能够高效稳定实现超低排放。高负荷锅炉效率提高了0.15个百分点，优于设计的锅炉效率值；低负荷锅炉效率为91.35%，提高了0.15个百分点。SNCR脱确系统优化后，脱硝剂消耗量显著降低，节省脱硝剂消耗37.6%。
关键词：污泥；循环流化床锅炉；超低排放；低氮燃烧；锅炉效率
文章编号：10093230(2018)030021=06
中图分类号：TK16；X51
文献标志码：A
ResearchonNOxUltra-lowEmissioninCFBBoilerwithSludge
Co-combustion
HAN Li -peng"-,LIU Guan jie'2,ZHANG Jjian dong'2,SUN Jian' , WANG Li - yong ,ZHANG Yi”,GUO An'2
(1. National Energy R&D Center of Coal Clean and Lowcarbon Power Generation(Huaneng Clean Energy Research Institute),Beijing 102209,China; 2.National Research and Development Experiment Center of Clean and Low Carbon Power Generation Technology for Energy Coal,Beijing 102209, China; 3.Huaneng Suzhou Power Plant, Gaoxin District,
Suzhou215129,JiangsuProvince,China）
Abstract: Study of sludge co combustion and combustion adjustment test have been caried out in in 240/h CFB boiler. The results show that no significant effect of NOx emissions when below 6% sludge co combustion. As the amount of oxygen concentration increases in flue gas, the amount of NOx produced by the boiler increases significantly. The carbon content in ash and cinder increase with the increase of static pressure in the chamber. Afer the lowNOx combustion adjustment test, the consumption of deoxidizer decreased obviously, the boiler at high load saving deoxidizer agent 17. 10 L/h the boiler at low load saving deoxidizer agent 46. 9 L/h. Ultra low NOx emission can be achieved very steadily. The boiler thermal efficiency at high load increased by O. 15 percentage points, meanwhile boiler thermal efficiency at low load is 91.35% which increased by 0. 15. After the optimization of the selective non calalytic reduction system, the consumption of the deoxidizer agent is obviously reduced, saving deoxidizer by 37.6%.
Key words: Sludge; Circulating fluidized bed boiler; Ultra -low emission; Low NOx combustion; Boiler thermal efficiency
0
引言
我国是世界上主要的煤炭生产和消费国，也收稿日期：201712-21
修订日期：20180203
基金项目：中国华能集团科技项目（K-499016001循环流
化床锅炉流态优化改造与NOx超低排放工程应用研究）
作者简介：韩立鹏（1979－），男，河北邢台人，高级工程师，
博士研究生，从事清洁煤发电研发工作。主要研究方向清洁煤发电技术。
万方数据
是以煤炭为主要一次能源的国家。在未来相当长的时期内，我国以煤炭为主要能源的格局不会改变。煤炭燃烧产生的烟气中含有大量的烟尘、二氧化硫（SO,）和氮氧化物（NOx）等污染物，环境污染回题已经成为了制约我国经济可持续发展的重要问题，函待解决。《煤电节能减排升级与改