Retrofitting for burning Zhundong coal for a 480t/h boiler

CHANG Jiaxing; YANG Zhongcan; LI Shanghua; YAO Wei

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Retrofitting for burning Zhundong coal for a 480t/h boiler

更新时间：2025-09-28

- Retrofitting for burning Zhundong coal for a 480t/h boiler
- Thermal Power Generation Vol. 43, Issue 3, Pages: 116-119(2014)
- 作者机构：
  
  1. 国网能源新疆阜康发电有限公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK227.1
- Published：2014
- 稿件说明：
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CHANG Jiaxing, YANG Zhongcan, LI Shanghua, et al. Retrofitting for burning Zhundong coal for a 480t/h boiler[J]. Thermal power generation, 2014, 43(3): 116-119.
DOI：

CHANG Jiaxing, YANG Zhongcan, LI Shanghua, et al. Retrofitting for burning Zhundong coal for a 480t/h boiler[J]. Thermal power generation, 2014, 43(3): 116-119. DOI：

摘要

国网能源新疆阜康发电有限公司在改烧准东煤过程中存在NOx排放过高、锅炉结焦和沾污严重、制粉系统干燥能力不足等问题

对此提出了采用空气深度分级、燃烧器小切圆布置、在易结焦和沾污部位增加吹灰器和利用热炉烟管道提高热一次风温等措施。改造后

在NOx排放浓度低于200mg/m3的情况下

锅炉可以全烧准东煤长期连续高负荷运行

锅炉效率可达92.50%

较改前的91.69%约提高0.8百分点。

Abstract

Several problems occurred in Fukang thermal power plant

such as high NOxemission

severe boiler coking and fouling

and insufficient drying capacity of pulverizing system

during the onversion to Zhundong coalfiring.To solve these problems

various measures were taken

like using deep air-staged combustion technology

arranging burners in small tangential forms

adding new soot blowers around the easy-coking and contaminated regions

enhancing the primary air temperature through high-temperature flue

an so on.After the retrofiting

with the NOxemission of below 200mg/m3

the boiler can run continually at high load by firing Zhundong coal only

and the boiler efficiency can reach up to 92.50%

about 0.8%higher than that before the retrofitting.

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