Combustion characteristics of waste sewage sludge using oxy-fuel circulating fluidized bed

Ha Na Jang, Jin Ho Sung, Hang Seok Choi, Yongchil Seo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Cold bed and 30 kWth pilot bed tests using circulating fluidized bed (CFB) were conducted to apply oxyfuel technology for waste sludge combustion as a carbon capture and storage technology. In cold bed test, the minimum fluidization velocity (umf) and superficial velocity for fast fluidization was determined as 0.120 m/s and 2.5 m/s, respectively. In the pilot test, air and oxy-fuel combustion experiments for waste sludge were conducted using CFB unit. The flue-gas temperature in 21∼25% oxy-fuel combustion was higher than that of air and up to 30% oxy-fuel combustion. In addition, the concentration of carbon dioxide was more than 80% with the oxygen injection range from 21% to 25% in oxy-fuel CFB waste sludge combustion.

Original languageEnglish
Pages (from-to)846-853
Number of pages8
JournalKorean Chemical Engineering Research
Volume55
Issue number6
DOIs
Publication statusPublished - 2017 Dec 1

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Sewage sludge
Fluidized beds
Fluidization
Carbon capture
Air
Flue gases
Carbon Dioxide
Carbon dioxide
Oxygen
Experiments
Temperature

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

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abstract = "Cold bed and 30 kWth pilot bed tests using circulating fluidized bed (CFB) were conducted to apply oxyfuel technology for waste sludge combustion as a carbon capture and storage technology. In cold bed test, the minimum fluidization velocity (umf) and superficial velocity for fast fluidization was determined as 0.120 m/s and 2.5 m/s, respectively. In the pilot test, air and oxy-fuel combustion experiments for waste sludge were conducted using CFB unit. The flue-gas temperature in 21∼25{\%} oxy-fuel combustion was higher than that of air and up to 30{\%} oxy-fuel combustion. In addition, the concentration of carbon dioxide was more than 80{\%} with the oxygen injection range from 21{\%} to 25{\%} in oxy-fuel CFB waste sludge combustion.",
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Combustion characteristics of waste sewage sludge using oxy-fuel circulating fluidized bed. / Jang, Ha Na; Sung, Jin Ho; Choi, Hang Seok; Seo, Yongchil.

In: Korean Chemical Engineering Research, Vol. 55, No. 6, 01.12.2017, p. 846-853.

Research output: Contribution to journalArticle

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