Simulation and optimization of SNCR system of 300 MW circulating fluidized bed boiler

XIN Shengwei; HAN Ping; DUAN Caili; WANG Hu; GU Congyang; XIE Guowei; WU Wanzhu; DU Jiajun

doi:10.19666/j.rlfd.202103103

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Simulation and optimization of SNCR system of 300 MW circulating fluidized bed boiler

更新时间：2025-09-28

- Simulation and optimization of SNCR system of 300 MW circulating fluidized bed boiler
- Thermal Power Generation Vol. 50, Issue 11, Pages: 122-129(2021)
- 作者机构：
  
  1. 国家能源集团循环流化床技术研发中心
  2. 国家能源集团国源电力有限公司
  3. 国家能源集团国神技术研究院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202103103
  CLC： X773;TM621.2
- Published：2021
- 稿件说明：
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XIN Shengwei, HAN Ping, DUAN Caili, et al. Simulation and optimization of SNCR system of 300 MW circulating fluidized bed boiler[J]. Thermal power generation, 2021, 50(11): 122-129.
DOI：

XIN Shengwei, HAN Ping, DUAN Caili, et al. Simulation and optimization of SNCR system of 300 MW circulating fluidized bed boiler[J]. Thermal power generation, 2021, 50(11): 122-129. DOI： 10.19666/j.rlfd.202103103.

摘要

通过模拟300 MW机组循环流化床(CFB)锅炉的选择性非催化还原(SNCR)脱硝过程

研究了反应温度、氨氮摩尔比、还原剂雾化粒径、还原剂喷射速度等对SNCR脱硝效果的影响

并对某电厂300 MW机组CFB锅炉的SNCR脱硝系统进行了优化。结果表明:在800～1 000℃的反应范围内

随着温度和氨氮摩尔比的升高

脱硝效率随之提高;还原剂雾化粒径的增加和喷射速度的提高对脱硝效率提升的幅度很小;某300 MW机组CFB锅炉SNCR系统及运行参数优化后

锅炉在3个典型负荷下均实现了NOx的超低排放

最大脱硝效率达到了74.2%。

Abstract

By simulating the selective non-catalytic reduction(SNCR) denitration process of a 300 MW circulating fluidized bed(CFB) boiler

the effects of reaction temperature

ammonia-nitrogen molar ratio

reducing agent atomization particle size and reducing agent injection speed on denitrification efficiency of the SNCR flue gas denitration system were studied. The results show that

in the reaction range of 800～1 000 ℃

with the increase of temperature and ammonia-nitrogen ratio

the denitration efficiency increases. Increasing the reducing agent atomization particle size and the injection speed has little effect on enhancing the denitration efficiency. By optimizing the SNCR denitraiton system and the operating parameters

the 300 MW CFB boiler achieves ultra-low NOx emissions at three typical loads

and the maximum denitrification efficiency reaches 74.2%.

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Related Institution

Zhengzhou Electric Power College Power Engineering Department

College of Energy, Power and Mechanical Engineering, North China Electric Power University

Key Laboratory of Energy Heat Conversion and Process Measurement and Control, Ministry of Education, Southeast University

Dongfang Boiler Co., Ltd. of Dongfang Electric Group

Guangdong Power Grid Co., Ltd. Electric Power Science Research Institute

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