Investigation on ash deposition characteristics during Zhundong coal combustion
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Investigation on ash deposition characteristics during Zhundong coal combustion
- 发表刊物：
- Journal of the Energy Institute
- 摘要：
- The reserves of Zhundong (ZD) coal in China are huge. However, the high content of Na and Ca induces serious slagging and fouling problems. In this study, the ZD coal was burned in a DTF (drop tube furnace), and the ashes collected at different gas temperature with non-cooling probe were analyzed to obtain the ash particle properties and their combination mode. The results showed that Na, Ca and Fe are the main elements leading to slagging when the gas temperature is about 1000 °C during ZD coal combustion, but their mechanisms are quite different. Some sodium silicates and aluminosilicates and calcium sulfate keep molten state in the ashes collected at 1000 °C. These molten ash particles may impact and adhere on the bare tube surface, and then solidified quickly. With the growth of slag thickness, the depositing surface temperature is increased. The molten ash particles might form a layer of molten film, which could capture the other high fusion temperature particles. The Fe2O3 sphere were captured by the formed molten slag and then they blended together to form a new molten slag with lower melting temperature.
- 合写作者：
- Bo Wei, Houzhang Tan, Xuebin Wang, Renhui Ruan, Zhongfa Hu, Yibin Wang
- 卷号：
- 91（01）
- 页面范围：
- 33-42
- 是否译文：
- 否
- 发表时间：
- 2018-02-01