Oxy-fuel co-combustion of sewage sludge and wood pellets with flue gas recirculation in a circulating fluidized bed

Jin Ho Sung; Seung Ki Back; Bup Mook Jeong; Jeong Hun Kim; Hang Seok Choi; Ha Na Jang; Yong Chil Seo

doi:10.1016/j.fuproc.2017.12.005

Oxy-fuel co-combustion of sewage sludge and wood pellets with flue gas recirculation in a circulating fluidized bed

Jin Ho Sung, Seung Ki Back, Bup Mook Jeong, Jeong Hun Kim, Hang Seok Choi, Ha Na Jang, Yong Chil Seo

Division of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Oxy-fuel co-combustion of waste sludge and biomass with flue gas recirculation was conducted to observe the combustion characteristics and enrichment of CO₂ using a 30 kWth circulating fluidized bed. The combustion reaction was accelerated and the ignition time was shortened by increasing the blending ratio of wood pellets and oxygen mixing ratio. The best combustion performance was observed at a 30% blended biomass ratio, with 23% oxygen mixing rate as oxy co-combustion with respect to heat recovery and enrichment of CO₂; this study included experiments with ranges of 0 to 70% for the blending ratio and 21 to 30% for the oxygen mixing ratio. With flue gas recirculation at 60%, the oxy-fuel co-combustion of sludge with biomass was optimized in high enrichment of CO₂ (over 90%) with less pollutant emissions, specifically 0.91% CO and 14 ppm NO.

Original language	English
Pages (from-to)	79-85
Number of pages	7
Journal	Fuel Processing Technology
Volume	172
DOIs	https://doi.org/10.1016/j.fuproc.2017.12.005
Publication status	Published - 2018 Apr

Bibliographical note

Funding Information:
This work was supported by the Korea Ministry of Environment (MOE) as the Knowledge-based Environmental Service (Waste to Energy and Recycling) Human Resource Development Project. This work was also supported by a grant from the Human Resources Development program (No. 20164030201250) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean Ministry of Trade, Industry and Energy.

Funding Information:
This work was supported by the Korea Ministry of Environment (MOE) as the Knowledge-based Environmental Service (Waste to Energy and Recycling) Human Resource Development Project. This work was also supported by a grant from the Human Resources Development program (No. 20164030201250 ) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean Ministry of Trade, Industry and Energy .

Publisher Copyright:
© 2017 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology

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10.1016/j.fuproc.2017.12.005

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title = "Oxy-fuel co-combustion of sewage sludge and wood pellets with flue gas recirculation in a circulating fluidized bed",

abstract = "Oxy-fuel co-combustion of waste sludge and biomass with flue gas recirculation was conducted to observe the combustion characteristics and enrichment of CO2 using a 30 kWth circulating fluidized bed. The combustion reaction was accelerated and the ignition time was shortened by increasing the blending ratio of wood pellets and oxygen mixing ratio. The best combustion performance was observed at a 30% blended biomass ratio, with 23% oxygen mixing rate as oxy co-combustion with respect to heat recovery and enrichment of CO2; this study included experiments with ranges of 0 to 70% for the blending ratio and 21 to 30% for the oxygen mixing ratio. With flue gas recirculation at 60%, the oxy-fuel co-combustion of sludge with biomass was optimized in high enrichment of CO2 (over 90%) with less pollutant emissions, specifically 0.91% CO and 14 ppm NO.",

author = "Sung, {Jin Ho} and Back, {Seung Ki} and Jeong, {Bup Mook} and Kim, {Jeong Hun} and Choi, {Hang Seok} and Jang, {Ha Na} and Seo, {Yong Chil}",

note = "Funding Information: This work was supported by the Korea Ministry of Environment (MOE) as the Knowledge-based Environmental Service (Waste to Energy and Recycling) Human Resource Development Project. This work was also supported by a grant from the Human Resources Development program (No. 20164030201250) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean Ministry of Trade, Industry and Energy. Funding Information: This work was supported by the Korea Ministry of Environment (MOE) as the Knowledge-based Environmental Service (Waste to Energy and Recycling) Human Resource Development Project. This work was also supported by a grant from the Human Resources Development program (No. 20164030201250 ) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Korean Ministry of Trade, Industry and Energy . Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

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AU - Kim, Jeong Hun

AU - Choi, Hang Seok

AU - Jang, Ha Na

AU - Seo, Yong Chil

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PY - 2018/4

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AB - Oxy-fuel co-combustion of waste sludge and biomass with flue gas recirculation was conducted to observe the combustion characteristics and enrichment of CO2 using a 30 kWth circulating fluidized bed. The combustion reaction was accelerated and the ignition time was shortened by increasing the blending ratio of wood pellets and oxygen mixing ratio. The best combustion performance was observed at a 30% blended biomass ratio, with 23% oxygen mixing rate as oxy co-combustion with respect to heat recovery and enrichment of CO2; this study included experiments with ranges of 0 to 70% for the blending ratio and 21 to 30% for the oxygen mixing ratio. With flue gas recirculation at 60%, the oxy-fuel co-combustion of sludge with biomass was optimized in high enrichment of CO2 (over 90%) with less pollutant emissions, specifically 0.91% CO and 14 ppm NO.

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Oxy-fuel co-combustion of sewage sludge and wood pellets with flue gas recirculation in a circulating fluidized bed

Abstract

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