Characteristics of NO-char reaction in O<sub>2</sub>/CO<sub>2</sub> atmosphere

ZHANG Yongchun; ZHANG Jun

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Characteristics of NO-char reaction in O₂/CO₂ atmosphere

更新时间：2025-09-28

- Characteristics of NO-char reaction in O₂/CO₂ atmosphere
- Thermal Power Generation Vol. 44, Issue 7, Pages: 12-17(2015)
- 作者机构：
  
  1. 江苏省特种设备安全监督检验研究院无锡分院
  2. 东南大学能源与环境学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ534
- Published：2015
- 稿件说明：
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ZHANG Yongchun, ZHANG Jun. Characteristics of NO-char reaction in O₂/CO₂ atmosphere[J]. Thermal power generation, 2015, 44(7): 12-17.
DOI：

ZHANG Yongchun, ZHANG Jun. Characteristics of NO-char reaction in O₂/CO₂ atmosphere[J]. Thermal power generation, 2015, 44(7): 12-17. DOI：

摘要

利用固定床反应器装置对李家塔烟煤和锦界烟煤在高浓度CO2气氛下煤焦异相还原NO的反应特性进行了实验研究

考察了反应气氛、制焦气氛、升温速率、煤粉粒径、煤焦中矿物质对煤焦异相还原NO的影响规律。结果表明:反应气氛中高浓度CO2的存在不利于煤焦还原NO;相较N2气氛

高浓度CO2气氛下

反应过程中生成了大量CO

但其并未对NO还原起促进作用;制焦气氛主要影响煤焦的含碳量

而对煤焦反应性的影响较小;升温速率对煤焦还原NO能力的影响较小;煤粉粒径越小其煤焦还原NO能力越强;煤焦中矿物质对煤焦还原NO能力的影响不尽相同

取决于煤焦中矿物质的具体组分。

Abstract

Taking Lijiata bituminous chars and Jinjie bituminous chars as the object

the characteristics of NO-char reaction in atmosphere with high CO2 concentration were investigated in a fixed-bed reactor.The effects of reaction atmosphere

pyrolysis atmosphere

heating rate

coal particle size and minerals on the NO-char were obtained.The experimental results show that

high concentration of CO2 was detrimental to NO reduction by chars.There was a higher production of CO in high-concentration CO2 atmosphere than in N2 atmosphere

but it didn't accelerate the NO reduction.Pyrolysis atmosphere and heating rate had little effect on char reactivity.The char formed from smaller coal particle exhibited a stronger reactivity.Effects of mineral matters in coal char on NO reduction were different

depending on the specific ingredients.

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Related Institution

College of Electrical and Power Engineering, Taiyuan University of Technology

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Xi'an Thermal Power Research Institute Co.,Ltd.,Suzhou Branch

School of Energy Power Engineering, Northeast Dianli University

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Characteristics of NO-char reaction in O2/CO2 atmosphere

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Characteristics of NO-char reaction in O₂/CO₂ atmosphere