Water-In-Oil Emulsion as Boiler Fuel for Reduced NOx Emissions and Improved Energy Saving

被引:11
作者
Hsuan, Chung-Yao [1 ]
Hou, Shuhn-Shyurng [2 ]
Wang, Yun-Li [2 ]
Lin, Ta-Hui [3 ,4 ]
机构
[1] Kun Shan Univ, Green Energy Technol Res Ctr, Tainan 71070, Taiwan
[2] Kun Shan Univ, Dept Mech Engn, Tainan 71070, Taiwan
[3] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan
[4] Natl Cheng Kung Univ, Res Ctr Energy Technol & Strategy, Tainan 70101, Taiwan
关键词
water-emulsified fuel; boiler efficiency; NOx emissions; microexplosion; droplets evaporation; energy saving; COMBUSTION CHARACTERISTICS; DROPLET VAPORIZATION; ENGINE PERFORMANCE; MODEL;
D O I
10.3390/en12061002
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
An experimental system for observing the drop vaporization and microexplosion 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 microexplosion 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 fuel savings of 7%.
引用
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页数:14
相关论文
共 26 条
[1]   Engine performance using emulsified diesel fuel [J].
Alahmer, A. ;
Yamin, J. ;
Sakhrieh, A. ;
Hamdan, M. A. .
ENERGY CONVERSION AND MANAGEMENT, 2010, 51 (08) :1708-1713
[2]  
[Anonymous], 2018, ENERGIES, DOI [DOI 10.3390/EN11071830, DOI 10.3390/en11071830]
[3]   Multicomponent fuel droplet vaporization and combustion using spectral theory for a continuous mixture [J].
Arias-Zugasti, M ;
Rosner, DE .
COMBUSTION AND FLAME, 2003, 135 (03) :271-284
[4]   Combustion characteristics of heavy oil-water emulsions [J].
Ballester, JM ;
Fueyo, N ;
Dopazo, C .
FUEL, 1996, 75 (06) :695-705
[5]   Combustion Performance and Emission Characteristics of a Diesel Engine Using a Water-Emulsified Heavy Fuel Oil and Light Diesel Blend [J].
Feng, Liyan ;
Du, Baoguo ;
Tian, Jiangping ;
Long, Wuqiang ;
Tang, Bin .
ENERGIES, 2015, 8 (12) :13628-13640
[6]   COMBUSTION AND EMISSION CHARACTERISTICS OF BURNING SPRAYS OF A RESIDUAL OIL AND ITS EMULSIONS WITH WATER [J].
GOLLAHALLI, SR ;
NASRULLAH, MK ;
BHASHI, JH .
COMBUSTION AND FLAME, 1984, 55 (01) :93-103
[8]   A simple model for the vaporization of droplets with large numbers of components [J].
Hallett, WLH .
COMBUSTION AND FLAME, 2000, 121 (1-2) :334-344
[9]  
Hou S.S., 2009, PHYS TESTS ANAL WATE
[10]   Co-Combustion of Fast Pyrolysis Bio-Oil Derived from Coffee Bean Residue and Diesel in an Oil-Fired Furnace [J].
Hou, Shuhn-Shyurng ;
Huang, Wei-Cheng ;
Lin, Ta-Hui .
APPLIED SCIENCES-BASEL, 2017, 7 (10)