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

Fuel Oils
fuel oils
Residual fuels
boilers
Fuel oils
Explosions
Boilers
explosions
Water content
moisture content
Sulfur
sulfur
high temperature environments
fuel consumption
Emulsions
Vaporization
Fuel consumption
ambient temperature
emulsions
Energy conservation

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.
Hsuan, Chung Yao ; Hou, Shuhn Shyurng ; Wang, Yun Li ; Lin, Ta-Hui. / 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.
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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).",
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Hsuan, CY, Hou, SS, Wang, YL & 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, 19-07-01 - 19-07-05.

Micro-explosion of emulsified fuel droplet and its combustion characteristics in a boiler. / Hsuan, Chung Yao; Hou, Shuhn Shyurng; Wang, Yun Li; Lin, Ta-Hui.

2019. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.

Research output: Contribution to conferencePaper

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AU - Hsuan, Chung Yao

AU - Hou, Shuhn Shyurng

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N2 - 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).

AB - 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).

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Hsuan CY, Hou SS, Wang YL, Lin T-H. Micro-explosion of emulsified fuel droplet and its combustion characteristics in a boiler. 2019. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.