Influence of steam on NO formation during oxy-coal combustion

HU Xiaowei; WU Wangchen; YAO Hong

doi:10.3969/j.issn.0438-1157.2014.11.050

您当前的位置：

首页 >

文章列表页 >

Influence of steam on NO formation during oxy-coal combustion

更新时间：2025-12-10

- Influence of steam on NO formation during oxy-coal combustion
- CIESC Journal Issue 11, Pages: 4564-4570(2014)
- 作者机构：
  
  华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.11.050
  CLC： 705
- Online First：05 November 2014，
  
  Published：05 November 2014
- 稿件说明：
移动端阅览
HU Xiaowei, WU Wangchen, YAO Hong. Influence of steam on NO formation during oxy-coal combustion[J]. CIESC Journal, 2014, (11): 4564-4570.
DOI：

HU Xiaowei, WU Wangchen, YAO Hong. Influence of steam on NO formation during oxy-coal combustion[J]. CIESC Journal, 2014, (11): 4564-4570. DOI： 10.3969/j.issn.0438-1157.2014.11.050.

摘要

为了研究H2O对燃料N向NO转化各个阶段的影响

采用可沿程取样的沉降炉反应器

研究了一种烟煤在1273 K温度下

O2/N2、O2/CO2以及O2/CO2/H2O气氛下燃烧的燃尽与NO生成的情况.并通过在停留时间为0.2、0.3、0.5、1.1 s与O2浓度为5%、21%及30%情况下的实验来研究H2O对NO生成的影响.实验结果表明

相对于O2/CO2气氛

H2O的添加抑制了NO的生成

且该影响主要集中在燃烧初期挥发分N的氧化过程.随着O2浓度的增加

H2O添加对oxy-coal燃烧方式下NO生成影响加大.

Abstract

The influence of H2O on NO formation during oxy-coal combustion was investigated in a drop-tube furnace. A bituminous coal was selected and burnt at temperature of 1273 K under O2/N2

O2/CO2 and O2/CO2/H2O atmospheres

respectively. At different O2 contents 5%

21%

and 30%

the samples were analyzed for increasing residence time from 0.2 s to 1.1 s. The results show that NO formation is suppressed by addition of H2O. The mechanism of NO reduction is due to the change of volatile-N chemistry with H2O addition. The H2O influence on homogeneous NO formation goes up with the increase of O2 concentration.

关键词

Keywords

references

Views

256

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Affected mechanisms of oxygen-deficient pretreatment on reduction of NO by biochar

Research and progress of volatile-char interaction during biomass and coal (co-)pyrolysis/gasification process

Origin of low productivity of underground coal gasification: diffusion and reaction in stagnant boundary layer and gasification tunnel

Fluidized bed two-stage gasification of coal with steam/O2 for production of low-tar syngas

Fundamentals and pilot demonstration of coal directional pyrolysis to high quality tar and gas products based on process intensification and reaction regulation

Related Author

ZHANG Lei

KANG Jiawei

LI Haoran

HONG Wenpeng

MA Meng

BAI Yonghui

WEI Juntao

YAN Lunjing

Related Institution

School of Energy and Power Engineering, Northeast Electric Power University

Institute of Clean Coal Technology, East China University of Science and Technology

State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University

State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology

College of Materials Science and Engineering, Nanjing Forestry University

⁰