Experimental study on fouling performance of coal ash from Zhundong de-sodium coal

CAO Peiqing

doi:10.19666/j.rlfd.201711121

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Experimental study on fouling performance of coal ash from Zhundong de-sodium coal

更新时间：2025-09-28

- Experimental study on fouling performance of coal ash from Zhundong de-sodium coal
- Thermal Power Generation Vol. 47, Issue 9, Pages: 84-90(2018)
- 作者机构：
  
  神华国神集团公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201711121
  CLC： TK16
- Published Online：03 September 2018，
  
  Published：2018
- 稿件说明：
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CAO Peiqing. Experimental study on fouling performance of coal ash from Zhundong de-sodium coal[J]. Thermal power generation, 2018, 47(9): 84-90.
DOI：

CAO Peiqing. Experimental study on fouling performance of coal ash from Zhundong de-sodium coal[J]. Thermal power generation, 2018, 47(9): 84-90. DOI： 10.19666/j.rlfd.201711121.

摘要

为了分析准东高钠煤经过脱钠工艺处理以后的煤灰沾污性能

采用煤灰烧结强度、煤灰烧结比例以及200 kW沾污试验台对脱钠煤进行了相关试验研究。结果表明:高钠煤经过脱钠工艺处理以后

仅煤灰中的钠含量降低

其他煤质指标基本不变;准东脱钠煤的沾污性能较原煤有较大幅度降低

但仍属于严重沾污等级

这主要和本次准东高钠原煤煤灰成分中的CaO和MgO质量分数较高有关;对于本文准东脱钠煤

建议炉膛出口温度T_(FEGT)(折烟角尖端垂直方向)960℃

或者将原煤中的钠脱至更低值。

Abstract

In order to analyze the fouling characteristics of coal ash from Zhundong high-sodium coal after sodium removal process

related experiments are carried out on de-sodium coal using the coal ash sintering strength

the coal ash sintering ratio

and the 200 kW fouling test bench. The results show that

after sodium removal process of high-sodium coal

only the sodium content in the coal ash reduces and the other coal quality indicators are basically unchanged. The fouling performance of Zhundong de-sodium coal is significantly lower than that of the raw coal

but it is still a serious contamination grade. This is mainly related to the high content of CaO and MgO in the coal ash from Zhundong high-sodium coal. For Zhundong de-sodium coal in this study

it is recommended that the furnace exit gas temperature T_(FEGT)(vertical direction of the tip of the smoke deflecting corner) be less than 960 ℃

or that the sodium in the raw coal be removed to a lower value.

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