Denitrification technology of biomass boilers and its engineering application

ZHOU Jianqiang; GAO Pan; DONG Changqing; YANG Yongping

doi:10.19666/j.rlfd.201802049

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Denitrification technology of biomass boilers and its engineering application

更新时间：2025-09-28

- Denitrification technology of biomass boilers and its engineering application
- Thermal Power Generation Vol. 47, Issue 10, Pages: 1-5(2018)
- 作者机构：
  
  华北电力大学生物质发电成套设备国家工程实验室
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201802049
  CLC： TK6;X511
- Published Online：28 September 2018，
  
  Published：2018
- 稿件说明：
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ZHOU Jianqiang, GAO Pan, DONG Changqing, et al. Denitrification technology of biomass boilers and its engineering application[J]. Thermal power generation, 2018, 47(10): 1-5.
DOI：

ZHOU Jianqiang, GAO Pan, DONG Changqing, et al. Denitrification technology of biomass boilers and its engineering application[J]. Thermal power generation, 2018, 47(10): 1-5. DOI： 10.19666/j.rlfd.201802049.

摘要

生物质是未来不可或缺的可再生能源

但由于其氮元素含量相对较高

在燃烧过程中会生成大量的氮氧化物

造成环境污染。通过分析生物质氮氧化物产生的机理和工程实践发现:生物质在锅炉燃烧时

其氮氧化物的生成及脱除过程受燃料类型、燃烧温度、过量空气系数影响较大;选择性非催化还原法是适合生物质锅炉的一种脱硝的技术

还原剂的类型、喷射点及喷射方式是影响脱硝效率的关键;控制好脱硝技术的关键点

选择性非催化还原法在生物质锅炉脱硝中就可以获得较高的效率

但要达到稳定的脱硝效率

还需要锅炉具备良好的运行控制。

Abstract

Biomass is an indispensable renewable energy in the future. However

due to relatively high nitrogen content in biomass

a large amount of nitrogen oxides are generated during the combustion process

which cause the environmental pollution. Through analysis on the mechanism of NOx formation and engineering practice

it is found that

during biomass combustion in boilers

the formation and removal process of NOx is greatly influenced by fuel type

combustion temperature and excess air coefficient. The non-catalytic reduction technology is a kind of denitrification technology suitable for biomass boiler

and the type of reducing agent

injection point and injection mode are the key factors affecting denitrification efficiency. By controlling the key point of the denitrification technology

the non-catalytic reduction method can achieve higher efficiency during the denitrification process in biomass boilers. However

to achieve a stable denitrification efficiency

it is necessary to have a good operational control of the boiler.

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