Influence of additives on NO<sub>x</sub>OUT denitration and formation of N<sub>2</sub>O and CO

ZHOU Hao; ZHANG Zhizhong; BAO Qiang; LIU Jiancheng; CEN Kefa

doi:10.3969/j.issn.0438-1157.2014.06.038

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Influence of additives on NO_xOUT denitration and formation of N₂O and CO

更新时间：2025-12-10

- Influence of additives on NO_xOUT denitration and formation of N₂O and CO
- CIESC Journal Issue 6, Pages: 2232-2240(2014)
- 作者机构：
  
  浙江大学能源清洁利用国家重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.06.038
  CLC： 511
- Online First：05 June 2014，
  
  Published：05 June 2014
- 稿件说明：
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ZHOU Hao, ZHANG Zhizhong, BAO Qiang, et al. Influence of additives on NO_xOUT denitration and formation of N₂O and CO[J]. CIESC Journal, 2014, (6): 2232-2240. DOI: 10.3969/j.issn.0438-1157.2014.06.038.
DOI：

ZHOU Hao, ZHANG Zhizhong, BAO Qiang, et al. Influence of additives on NO_xOUT denitration and formation of N₂O and CO[J]. CIESC Journal, 2014, (6): 2232-2240. DOI: 10.3969/j.issn.0438-1157.2014.06.038. DOI：

摘要

通过试验研究了NOx污染的NOxOUT脱除特点和温室气体N2O及CO的生成规律，结合动力学分析，探讨了添加剂的作用。结果表明：在不同氨氮比（NSR）下，最佳反应温度为950℃，最高脱硝效率可达76.33%；N2O随温度的生成曲线类似于效率曲线，在950℃左右达到最大排放量；N2O的排放随NSR和氧量的增加而升高；温度较高时，N2O的排放随停留时间的延长先增加后减少；碳酸钠、乙酸钠、谷氨酸钠及乙醇可有效提高低温侧的脱硝效率和拓宽相应的温度窗口，其中谷氨酸钠最为明显；脱硝效率随钠盐添加量的变化与温度有关，钠原子最佳添加量为60 ml·L-1；上述添加剂均可明显降低中高温段的N2O、CO排放，低温端则相反；N2O、CO的排放随温度、添加剂种类及浓度的不同而呈现各自的变化趋势。

Abstract

An experiment was performed to study the removal of NOx pollution and formation of greenhouse gas (N2O) and CO in NOxOUT process. Kinetic analysis was combined with the experiment results to discuss the effect of additives. The optimum reaction temperature was 950℃ and the highest denitration efficiency could reach 76.33% with different normalized stoichimetric ratios (NSR). The formation curves of N2O with temperature were similar to the efficiency curve and N2O emission reached a peak value at the temperature around 950℃. Increasing NSR and O2 concentration made N2O emission level higher. N2O emission first increased and then decreased with increasing residence time at higher temperatures (950℃

1000℃). Sodium carbonate

sodium acetate

sodium glutamate and ethanol could effectively improve the denitration efficiency on the low temperature side and extend corresponding temperature window

especially obviously for sodium glutamate. Denitration efficiency was related to temperature when altering the concentration of sodium salts and the optimum addition amount was 60 ml·L-1 for sodium atom. Above-mentioned additives could all remarkably reduce the emission of N2O and CO at medium and high temperatures

but adversely at the end point of low temperature. N2O and CO emission presented respective variation trends with the differences of temperature

type and concentartion of additives.

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Influence of additives on NOxOUT denitration and formation of N2O and CO

DOI：10.3969/j.issn.0438-1157.2014.06.038

摘要

Abstract

关键词

Keywords

references

Influence of additives on NO_xOUT denitration and formation of N₂O and CO