中国电力 ›› 2015, Vol. 48 ›› Issue (4): 23-26.DOI: 10.11930.2015.4.23

• 火电厂烟气脱硝技术专栏 • 上一篇    下一篇

SNCR脱硝装置对CFB锅炉运行的影响研究

杨用龙1,赵凯2,苏秋凤3,张杨1,王丰吉1,朱跃1   

  1. 1. 华电电力科学研究院,浙江 杭州 310030;
    2. 华电天津军粮城发电有限公司,天津 300300;
    3. 浙江大学能源清洁利用国家重点实验室,浙江 杭州 310027
  • 收稿日期:2015-01-13 出版日期:2015-04-25 发布日期:2015-12-03
  • 作者简介:杨用龙(1985—),男,湖北荆州人,硕士,工程师,从事火电厂烟气环保工程技术及研究工作。E-mail: yangyonglonghao@163.com
  • 基金资助:
    This work is supported by China Huadian Engineering Co., Ltd. Technology Project, the study of inactivation of SCR catalyst regeneration and recycling utilization technology (No. CHEC-KJ-2011-39).

Influence of SNCR System on CFB Boiler Operation

YANG Yonglong1, ZHAO Kai2, SU Qiufeng3, ZHANG Yang1, WANG Fengji1, ZHU Yue1   

  1. 1. Huadian Electric Power Research Institute, Hangzhou 310030, China;
    2. Huadian Tianjin Junliangcheng Power Generation Co., Ltd., Tianjin 300300, China;
    3. State Key Laboratory of Clean Energy Utilization of Zhejiang University, Hangzhou 310027, China
  • Received:2015-01-13 Online:2015-04-25 Published:2015-12-03
  • Contact: 中国华电工程(集团)有限公司科技项目:失活SCR催化剂再生与循环回收利用技术的研发(CHEC-KJ-2011-39)

摘要: 介绍了CFB锅炉性能试验情况,并结合性能试验分析了SNCR脱硝装置对CFB锅炉运行的影响。结果表明:CFB锅炉SNCR脱硝工艺的脱硝效率可以达到60%以上;氨逃逸浓度高会加速空气预热器积灰阻塞;烟气中的逃逸氨与SO3相互作用,极易在空气预热器低温段形成积垢,引起空气预热器阻力增加,但能降低二者在空气预热器出口的排放浓度。

关键词: 火电厂, CFB锅炉, SNCR, 氨逃逸, 脱硝效率

Abstract: In this paper, the performance testing of a CFB boiler is introduced. And then through the testing, the impact of SNCR system on CFB boiler operation is analyzed. The results show that the deNOx efficiency of SNCR system can reach over 60%. High ammonia slip will accelerate the block of air preheater by fly ash. The interaction between the slipped ammonia and SO3 can cause fouling at the low-temperature end of the air preheater, which makes the resistance of the air preheater increase, but on the other hand it may lower the emission concentrations of ammonia slip and SO3.

Key words: thermal power plant, SNCR, CFB boiler, ammonia slip, deNOx efficiency

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