Characteristics and product generation pathway of NO oxidation by H<sub>2</sub>O<sub>2</sub> thermal decomposition in different size reactors

ZHAO Haiqian; DONG Ming; WANG Huaiyuan; LIU Lijun; LI Dong; LIU Xiaoyan

doi:10.11949/j.issn.0438-1157.20180377

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Characteristics and product generation pathway of NO oxidation by H₂O₂ thermal decomposition in different size reactors

更新时间：2025-12-10

- Characteristics and product generation pathway of NO oxidation by H₂O₂ thermal decomposition in different size reactors
- CIESC Journal Issue 9, Pages: 4037-4043(2018)
- 作者机构：
  
  1. 东北石油大学土木建筑工程学院,黑龙江,大庆,163318
  2. 东北石油大学化学化工学院,黑龙江,大庆,163318
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180377
  CLC： 511
- Online First：05 September 2018，
  
  Published：05 September 2018
- 稿件说明：
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ZHAO Haiqian, DONG Ming, WANG Huaiyuan, et al. Characteristics and product generation pathway of NO oxidation by H₂O₂ thermal decomposition in different size reactors[J]. CIESC Journal, 2018, (9): 4037-4043. DOI: 10.11949/j.issn.0438-1157.20180377.
DOI：

ZHAO Haiqian, DONG Ming, WANG Huaiyuan, et al. Characteristics and product generation pathway of NO oxidation by H₂O₂ thermal decomposition in different size reactors[J]. CIESC Journal, 2018, (9): 4037-4043. DOI: 10.11949/j.issn.0438-1157.20180377. DOI：

摘要

采用实验方法研究了不同尺寸滴管炉反应器内H2O2热分解氧化NO特性。对比了不同H2O2蒸发条件对NO氧化率的影响规律。分析了气体温度、H2O2溶液浓度、H2O2：NO摩尔比、NO初始浓度及气体流量对NO氧化率的影响。检测了氧化产物并分析了产物的生成路径。结果表明：H2O2的快速蒸发是其热分解氧化NO的前提。减小H2O2液滴尺寸或液膜厚度可加速H2O2蒸发与分解，提高NO氧化率，扩宽NO氧化的温度范围。保证蒸发速率可削弱H2O2浓度对NO氧化率的影响。当H2O2：NO < 10时，NO氧化率随H2O2：NO的增加而增加；当H2O2：NO>10时，NO氧化率几乎不随H2O2：NO变化。H2O2热分解对于较高浓度的NO具有更高的氧化效率。H2O2热分解氧化NO的主要产物为NO2。HO2·直接将NO氧化为NO2，·OH则先将NO转化为HONO，然后进一步氧化为NO2。

Abstract

Characteristics of NO oxidation by H2O2 thermal decomposition in different size reactors in drop tube furnaces were studied. The effects of different H2O2 evaporation conditions on NO oxidation ratio were compared. The effects of gas temperature

H2O2 concentration

H2O2:NO

initial NO concentration and gas flow rate on NO oxidation ratio were analyzed. The oxidation product was detected and the generation pathway of the product was analyzed. The results showed that the rapid evaporation of H2O2 was the precondition for NO oxidation by H2O2 thermal decomposition. Reducing H2O2 droplet size or liquid film thickness could accelerate H2O2 evaporation and decomposition rate which enhanced NO oxidation ratio and broadened the NO oxidation temperature range. Ensuring the evaporation rate of H2O2 decreased the effect of H2O2 concentration on NO oxidation. When H2O2:NO < 10

the NO oxidation ratio increased with the increase of H2O2:NO; when H2O2:NO>10

the NO oxidation ratio did not change with it. H2O2 thermal decomposition had higher oxidation efficiency for high concentrations of NO. The main product of NO oxidation by H2O2 thermal decomposition was NO2. HO2· directly oxidized from NO to NO2. However

·OH converted NO to HONO firstly

and then further oxidized HONO to NO2.

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Characteristics and product generation pathway of NO oxidation by H2O2 thermal decomposition in different size reactors

DOI：10.11949/j.issn.0438-1157.20180377

摘要

Abstract

关键词

Keywords

references

Characteristics and product generation pathway of NO oxidation by H₂O₂ thermal decomposition in different size reactors