响应曲面优化NaClO2湿法氧化燃气锅炉烟气脱硝

doi:10.14088/j.cnki.issn0439-8114.2023.01.011

湖北农业科学 ›› 2023, Vol. 62 ›› Issue (1): 71-76.doi: 10.14088/j.cnki.issn0439-8114.2023.01.011

响应曲面优化NaClO₂湿法氧化燃气锅炉烟气脱硝

钱莉莉^a,b, 周慧敏^a,b, 朱梦钰^a,b, 夏逢婕^a,b, 朱承驻^a,b,c

合肥工业大学,a.资源与环境工程学院; b.大气环境与污染控制研究所; c.纳米矿物与污染控制安徽普通高校重点实验室,合肥 230009

收稿日期:2021-10-18 出版日期:2023-01-25 发布日期:2023-03-07
通讯作者: 朱承驻（1967-）,男,安徽安庆人,教授,主要从事大气污染控制、光化学机理研究,（电话）18655176809（电子信箱）czzhu@hfut.edu.cn。
作者简介:钱莉莉（1996-）,女,安徽马鞍山人,在读硕士研究生,研究方向为环境污染与控制,（电话）15730139506（电子信箱）15730139506@163.com
基金资助:
安徽省科技重大专项（201903a07020023; 201903b06020016）

Optimization of NaClO₂ wet oxidation denitration conditions for flue gas from gas-fired boiler by response surface methodology

QIAN Li-li^a,b, ZHOU Hui-min^a,b, ZHU Meng-yu^a,b, XIA Feng-jie^a,b, ZHU Cheng-zhu^{a,b, c}

a. School of Resources and Environmental Engineering; b. Institute of Atmospheric Environment & Pollution Control; c. Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei 230009, China

Received:2021-10-18 Online:2023-01-25 Published:2023-03-07

摘要/Abstract

摘要： 针对燃气锅炉烟气氮氧化物超标排放,研究了NaClO₂湿法氧化脱硝的工艺条件,分析了NaClO₂浓度、pH、溶液温度及空塔气速对脱硝效率的影响。在此基础之上,基于响应曲面法进行试验设计,以NO_x去除率为响应值,建立了工艺影响因素与响应值之间的数学模型,分析了影响因素间的交互作用。结果表明,NaClO₂质量浓度、pH和空塔气速对NO_x去除率影响显著（P<0.05）,NaClO₂质量浓度与pH、空塔气速与pH均存在显著的交互作用（P<0.05）。响应曲面优化后的最佳工艺条件为NaClO₂质量浓度为1.2 g/L、溶液pH为5.02、反应温度为59.86 ℃及空塔气速为1.01 L/min。

关键词: 燃气锅炉烟气, NO_x, 湿法脱硝, NaClO₂, 响应曲面法

Abstract: In view of the excessive emission of nitrogen oxides from flue gas of gas-fired boiler, the process conditions of NaClO₂ wet oxidation denitration were studied. The effects of NaClO₂ concentration, pH, solution temperature and empty tower gas velocity on the denitration rate in NaClO₂ wet oxidation denitration process were studied. The response surface method was used for the experimental design. Taking the NO_x removal rate as the response value, the mathematical model between the factors and the response value was established, and the interaction among the influencing factors was analyzed. The results showed that NaClO₂ mass concentration, pH and empty tower gas velocity had significant effects on NO_x removal rate（P<0.05）, and there was significant interaction between NaClO₂ mass concentration and pH, as well as between pH and empty tower gas velocity（P<0.05）. The optimized process conditions were that the mass concentration of NaClO₂ was 1.2 g/L, the pH of the solution was 5.02, the reaction temperature was 59.86 ℃, and the empty tower gas velocity was 1.01 L/min.

Key words: flue gas from gas-fired boiler, NO_x, wet denitration, NaClO₂, response surface method

中图分类号:

X511

钱莉莉, 周慧敏, 朱梦钰, 夏逢婕, 朱承驻. 响应曲面优化NaClO₂湿法氧化燃气锅炉烟气脱硝[J]. 湖北农业科学, 2023, 62(1): 71-76.

QIAN Li-li, ZHOU Hui-min, ZHU Meng-yu, XIA Feng-jie, ZHU Cheng-zhu. Optimization of NaClO₂ wet oxidation denitration conditions for flue gas from gas-fired boiler by response surface methodology[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(1): 71-76.

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响应曲面优化NaClO₂湿法氧化燃气锅炉烟气脱硝

Optimization of NaClO₂ wet oxidation denitration conditions for flue gas from gas-fired boiler by response surface methodology

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