# Micro-explosion of emulsified fuel droplet and its combustion characteristics in a boiler

Chung Yao Hsuan, Shuhn Shyurng Hou, Yun Li Wang, Ta Hui Lin

## 摘要

An experimental system for observing the drop vaporization and micro-explosion characteristics of emulsified droplets in high-temperature environments was conducted to analyze the effects of environmental temperature, droplet size, and water content on droplet behavior. In addition, emulsified low-sulfur heavy fuel oil (HFO) with a 20 vol% water content and pure low-sulfur HFO were used as fuels for burning in an industrial boiler under normal operating conditions. The results showed that by using an emulsified HFO with a 20 vol% water content, the boiler efficiency can be improved by 2%, and that a reduction of 35 ppm in NOx emissions (corresponding to a NOx reduction rate of 18%) can be achieved. These advantages are due to the occurrence of a micro-explosion during the combustion of the emulsified droplets. It was observed that when emulsified HFO with a 20 vol% water content was used, the fuel (HFO) consumption rate was 252 L/h. On the other hand, the fuel consumption rate was 271 L/h when pure low-sulfur HFO was used. Therefore, a reduction of 19 L/h in the fuel (HFO) consumption rate was achieved when using the water-in-oil emulsion, corresponding to a 7% increment in energy savings (fuel savings).

原文 English Published - 2019 12th Asia-Pacific Conference on Combustion, ASPACC 2019 - Fukuoka, Japan持續時間: 2019 七月 1 → 2019 七月 5

### Conference

Conference 12th Asia-Pacific Conference on Combustion, ASPACC 2019 Japan Fukuoka 19-07-01 → 19-07-05

• 化學工程 (全部)
• 能源工程與電力技術
• 燃料技術
• 凝聚態物理學