Mechanisms of steady-state establishment and denitrification performance of reverse electrodialysis denitrification reactor

HUANG Jiaxin; HU Junyong; TAN Xueyi; ZHANG Miaoqi; ZENG Junli; ZHANG Jiajie; MA Suxia

doi:10.11949/0438-1157.20260187

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Mechanisms of steady-state establishment and denitrification performance of reverse electrodialysis denitrification reactor

更新时间：2026-06-03

- Mechanisms of steady-state establishment and denitrification performance of reverse electrodialysis denitrification reactor
- CIESC Journal (2026)
- 作者机构：
  
  1.太原理工大学电气与动力工程学院，山西太原 030024
  2.煤电清洁智能控制教育部重点实验室，山西太原 030024
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260187
  CLC： TK 09
- Received：06 February 2026，
  
  Revised：2026-06-01，
  
  Accepted：02 June 2026，
- 稿件说明：
移动端阅览
HUANG Jiaxin, HU Junyong, TAN Xueyi, et al. Mechanisms of steady-state establishment and denitrification performance of reverse electrodialysis denitrification reactor[J/OL]. CIESC Journal, 2026.
DOI：

HUANG Jiaxin, HU Junyong, TAN Xueyi, et al. Mechanisms of steady-state establishment and denitrification performance of reverse electrodialysis denitrification reactor[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-1157.20260187.

摘要

在燃煤烟气治理趋近“近零排放”的背景下，低浓度NO的深度脱除与烟气余热利用具有重要意义。为此，构建逆电渗析（RED）脱硝反应器，通过改变常规逆电渗析反应器的氧化还原反应类型，以实现NO的深度氧化脱除。实验研究了反应器运行过程中电极液pH值的变化规律，并分析进料盐溶液流速和电极液流速对反应器脱硝性能的影响。结果表明，电极液pH值具有自稳定性，不同初始pH值条件下均可自趋稳定在2左右，反应器在实验时段内表现出较好的稳定运行特征；同时，提高进料盐溶液流速和电极液流速均可显著缩短反应器稳态建立时间，并提升其脱硝效率。该研究为烟气末端低浓度NO深度脱除及低温余热利用提供了实验基础。

Abstract

Against the backdrop of coal-fired flue gas treatment approaching "near-zero emissions

" the deep removal of low-concentration NO and the utilization of flue gas waste heat are of significant importance. To this end

a reverse electrodialysis (RED) denitrification reactor was constructed

modifying the type of redox reaction typically employed in conventional RED reactors to achieve the deep oxidative removal of NO. Experimental investigations examined the variations in electrode solution pH during reactor operation and analyzed the impact of the feed salt solution flow rate and electrode solution flow rate on the reactor's denitrification performance. The results demonstrate that the electrode solution pH exhibits self-stabilizing characteristics; regardless of the initial pH value

it consistently converges toward a stable value of approximately 2

indicating that the reactor maintained excellent operational stability throughout the experimental period. Furthermore

increasing both the feed salt solution flow rate and the electrode solution flow rate was found to significantly reduce the time required for the reactor to reach a steady state

while simultaneously enhancing its denitrification efficiency. This study provides an experimental foundation for the deep removal of low-concentration NO in flue gas tail streams

as well as for the utilization of low-temperature waste heat.

关键词

Keywords

references

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