| SNCR+SCR烟气联合脱硝工艺在电站锅炉中的应用 |
| |
| 引用本文： | 朱晨曦,郑迎九,周昊. SNCR+SCR烟气联合脱硝工艺在电站锅炉中的应用[J]. 中国电力, 2016, 49(2): 164-169. DOI: 10.11930/j.issn.1004-9649.2016.02.164.06 |
| |
| 作者姓名： | 朱晨曦 郑迎九 周昊 |
| |
| 作者单位： | 1.杭州华电半山发电有限公司，浙江 杭州 310015; 2.浙江大学 热能工程研究所，浙江 杭州 310027 |
| |
| 摘 要： | 简述了选择性非催化还原（SNCR）+选择性催化还原（SCR）烟气联合脱硝技术原理，针对某电厂5号机组（装机容量130 MW）氮氧化物（NOx）排放超标问题，通过CFD数值模拟，制定了SNCR+SCR烟气联合脱硝工艺。首先采用低氮燃烧技术，将锅炉NOx排放控制在350 mg/m3以下，并且保证SNCR区域较低CO浓度；其次采用SNCR技术，将SCR脱硝装置前NOx质量浓度控制在200 mg/m3以下；最后采用SCR技术，将锅炉出口烟气NOx质量浓度控制在90 mg/m3以下，实现了重点地区NOx达标排放。
|
| 关 键 词： | 火电厂 烟气脱硝 SNCR SCR CFD 流场 脱硝效率 氨逃逸 |
| 收稿时间： | 2015-04-17 |
| 修稿时间： | 2016-03-21 |
The Application of SNCR+SCR United Flue Gas Denitration Technique in Power Generation Boilers |
| |
| ZHU Chenxi,ZHENG Yingjiu,ZHOU Hao. The Application of SNCR+SCR United Flue Gas Denitration Technique in Power Generation Boilers[J]. Electric Power, 2016, 49(2): 164-169. DOI: 10.11930/j.issn.1004-9649.2016.02.164.06 |
| |
| Authors: | ZHU Chenxi ZHENG Yingjiu ZHOU Hao |
| |
| Affiliation: | 1. Hangzhou Huadian Banshan Power Generation Co., Ltd., Hangzhou 310015, China;2. Institute for Thermal Power Engineering of Zhejiang University, Hangzhou 310027, China |
| |
| Abstract: | Regarding the NOx emission over national standard in Unit 5 of(130 MW) a power plant, this article briefly introduces the fundamentals of SNCR+SCR united flue gas denitration technique and establishes the corresponding implementation procedures through CFD numerical simulation. Firstly, the low-nitrogen combustion technique is utilized to control the boiler NOx emissions under 350 mg/m3 and guarantee low CO concentration in the SNCR zone. Secondly, the SNCR technique is adopted to control the NOx concentration before SCR under 200 mg/m3. At last the SCR technique is adopted to control the NOx emission concentration under 90 mg/m3. In this way, the NOx emissions can meet the related standards in major regions. |
| |
| Keywords: | SNCR SCR CFD flow field denitration efficiency ammonia escape |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国电力》浏览原始摘要信息 |
|
点击此处可从《中国电力》下载全文 |
