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, Yongchil Seo

Research output: Contribution to journalArticle

7 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 languageEnglish
Pages (from-to)79-85
Number of pages7
JournalFuel Processing Technology
Volume172
DOIs
Publication statusPublished - 2018 Apr 1

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Sewage sludge
Flue gases
Fluidized beds
Wood
Biomass
Oxygen
Waste heat utilization
Carbon Monoxide
Ignition
Experiments

All Science Journal Classification (ASJC) codes

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

Cite this

Sung, Jin Ho ; Back, Seung Ki ; Jeong, Bup Mook ; Kim, Jeong Hun ; Choi, Hang Seok ; Jang, Ha Na ; Seo, Yongchil. / Oxy-fuel co-combustion of sewage sludge and wood pellets with flue gas recirculation in a circulating fluidized bed. In: Fuel Processing Technology. 2018 ; Vol. 172. pp. 79-85.
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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.",
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Oxy-fuel co-combustion of sewage sludge and wood pellets with flue gas recirculation in a circulating fluidized bed. / Sung, Jin Ho; Back, Seung Ki; Jeong, Bup Mook; Kim, Jeong Hun; Choi, Hang Seok; Jang, Ha Na; Seo, Yongchil.

In: Fuel Processing Technology, Vol. 172, 01.04.2018, p. 79-85.

Research output: Contribution to journalArticle

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