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

Research output: Contribution to conferencePaper

Abstract

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).

Original languageEnglish
Publication statusPublished - 2019 Jan 1
Event12th Asia-Pacific Conference on Combustion, ASPACC 2019 - Fukuoka, Japan
Duration: 2019 Jul 12019 Jul 5

Conference

Conference12th Asia-Pacific Conference on Combustion, ASPACC 2019
CountryJapan
CityFukuoka
Period19-07-0119-07-05

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Condensed Matter Physics

Cite this

Hsuan, C. Y., Hou, S. S., Wang, Y. L., & Lin, T. H. (2019). Micro-explosion of emulsified fuel droplet and its combustion characteristics in a boiler. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.