Abstract

This paper presents a study of the atomization and combustion of coal-water slurry fuel sprayed by a pneumatic nozzle based on the use of wall and cumulative jets and the Coanda effect. The droplet size distribution of coal-water slurry at the nozzle outlet was measured by shadow photography. In the region of fuel ignition, the characteristic droplet size in the flow is 20 \(\mu\)m and the coal particle size is 100 \(\mu\)m. The results of experiments on an uncooled firing stand with an uncooled 5 MW furnace showed the possibility of efficient co-combustion of coal-water slurry fuel and pulverized coal using the developed burner.

中文翻译：

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气动喷嘴喷射煤水浆燃料的雾化与燃烧

摘要

本文基于壁面和累积射流的使用以及附壁效应，对气动喷嘴喷射的水煤浆燃料的雾化和燃烧进行了研究。喷头出口水煤浆液滴粒径分布采用阴影摄影法测量。在燃料点火区域，流动中的特征液滴尺寸为20  \(\mu\) m，煤颗粒尺寸为100  \(\mu\) m。在带有非冷却 5 MW 炉的非冷却燃烧台上的实验结果表明，使用开发的燃烧器可以有效地混合水煤浆燃料和粉煤。