Slagging Real-time Analysis of Coal-fired Boiler Based on Dynamic Track Image

被引：0

作者：

Xue Z. ^{[1
]}

Long D. ^{[1
]}

Song Z. ^{[2
]}

Zhou Y. ^{[1
]}

Qian X. ^{[2
]}

Sha W. ^{[2
]}

Huang Q. ^{[1
]}

机构：

[1] State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027, Zhejiang Province

[2] Jiaxing Power Generation Co. Ltd., Jiaxing, 314201, Zhejiang Province

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 17期

关键词：

Coal-fired utility boiler; Scaling-off location; Slag track; Slagging diagnosis; Slagging in furnace;

D O I：

10.13334/j.0258-8013.pcsee.200170

中图分类号：

学科分类号：

摘要：

The safe and economic operation of coal-fired boiler are influenced by slagging in the furnace. Acquiring the precise information on location and falling frequency of slag is very important to conduct combustion adjustment and avoid the dropping of bulk slag. At the bottom of the furnace, a slag track image recording system was arranged above the ash bucket to obtain the image of slag track during high load and load reduction. High-pressure air source was used to cool the lens and the camera, and prevent the lens from being contaminated. The slag track image processing software was used to calculate the location, size and brightness of the slag. The result showed that slag track could be accurately extracted by subtracting adjacent frames. The slag falling in the furnace was not evenly distributed, and mainly concentrated in the burner area. The amount of slag falling near the front-right wall was significantly higher than other locations. With the boiler load reducing, high-frequency slag falling occurred, and the size and average height of slag falling increased. The measurement results were consistent with the trend of the slag extractor oil pressure. At the same time, the brightness difference of the slag track was obvious, and the proportion of bright slag rise with the increase of the scaling height. © 2020 Chin. Soc. for Elec. Eng.

引用

页码：5566 / 5573

页数：7

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