Study on Melting Characteristics of Zhundong Coal Under Oxygen-rich/H<sub>2</sub>O-O<sub>2</sub> Conditions

Hao ZHOU; Zhenhuan CHEN; Jiakai ZHANG; Chenying ZHOU

doi:10.12096/j.2096-4528.pgt.19041

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Study on Melting Characteristics of Zhundong Coal Under Oxygen-rich/H₂O-O₂ Conditions

Energy Clean and Efficient Utilization in Coal-fired Power Systems | 更新时间：2025-07-04

- Study on Melting Characteristics of Zhundong Coal Under Oxygen-rich/H₂O-O₂ Conditions
- Power Generation Technology Vol. 40, Issue 3, Pages: 208-212(2019)
- 作者机构：
  
  能源清洁利用国家重点实验室(浙江大学), 浙江省杭州市 310007
- 作者简介：
- 基金信息：
  
  National Basic Research Program of China(2015CB251501)
- DOI：10.12096/j.2096-4528.pgt.19041
  CLC：
- Received：31 March 2019，
  
  Published：30 June 2019
- 稿件说明：
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Hao ZHOU, Zhenhuan CHEN, Jiakai ZHANG, et al. Study on Melting Characteristics of Zhundong Coal Under Oxygen-rich/H₂O-O₂ Conditions[J]. Power Generation Technology, 2019, 40(3): 208-212.
DOI：

Hao ZHOU, Zhenhuan CHEN, Jiakai ZHANG, et al. Study on Melting Characteristics of Zhundong Coal Under Oxygen-rich/H₂O-O₂ Conditions[J]. Power Generation Technology, 2019, 40(3): 208-212. DOI： 10.12096/j.2096-4528.pgt.19041.

摘要

煤灰中矿物质在不同气氛条件下的转化机理影响煤的熔融结渣过程。为了研究在富氧/水-氧气氛下准东煤的熔融特性，并为预防燃用准东煤锅炉的结渣提供参考，使用电荷耦合器件（charge coupled device，CCD）相机记录准东煤粉样品在热台上形变的过程。通过图像处理技术对煤粉样品在不同温度下的面积变化进行分析计算，得到面积变化特征点对应的煤粉熔融温度，并对比不同富氧/水-氧气氛条件下准东煤粉开始熔融的温度。研究表明，随着氧气体积分数增加，煤粉开始熔融的温度降低；随着水蒸气体积分数减小，煤粉开始熔融的温度升高，水蒸气和富氧气氛能促进准东煤粉熔融行为。

Abstract

The transformation mechanism of minerals in coal ash under different atmospheric conditions affects the melting and slagging process of coal. In order to study the melting characteristics of Zhundong coal under oxygen-rich/H

O-O

atmosphere

and provide reference for preventing the slagging of Zhundong coal-fired boilers

the charge coupled device (CCD) camera was used to record the deformation process of the pulverized Zhundong coal on the hot stage. By calculating the sampling areas of the pulverized coal at different temperatures

the melting temperatures corresponding to the characteristic change points of the pulverized coal areas were obtained. The temperatures at which Zhundong coal powder began to melt under different oxygen-rich/H

O-O

atmosphere conditions were compared. The study have shown that as the oxygen concentration increases

the temperature at which the coal powder begins to melt decreases. As the water vapor concentration decreases

the temperature at which the coal powder begins to melt increases. Both water vapor atmosphere and oxygen-rich atmosphere can promote the melting behavior of Zhundong coal.

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references

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Study on Melting Characteristics of Zhundong Coal Under Oxygen-rich/H2O-O2 Conditions

DOI：10.12096/j.2096-4528.pgt.19041

摘要

Abstract

关键词

Keywords

references

Study on Melting Characteristics of Zhundong Coal Under Oxygen-rich/H₂O-O₂ Conditions