Combustion characteristics of waste sludge at air and oxy-fuel combustion conditions in a circulating fluidized bed reactor

Ha Na Jang, Jeong Hun Kim, Seung Ki Back, Jin Ho Sung, Heung Min Yoo, Hang Seok Choi, Yongchil Seo

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Oxy-fuel combustion and circulating fluidized bed (CFB) technologies were applied to waste sewage sludge using a cold-bed and a 30 kWth CFB pilot test bed. In the cold-bed tests, the minimum fluidization velocity (umf) and the superficial velocity were determined as 0.120 m/s and 2.5 m/s, respectively. In pilot tests, the combustion characteristics of waste sewage sludge in oxy-fuel condition were very distinctive compared with that in air condition in terms of operation parameters such as the distribution of pressure drop and temperature, flue-gas temperature, and the composition of ash and flue-gas. Based on cold-bed and pilot bed tests, the oxygen injection rate was optimized in the range from 21% to 25% in oxy-fuel condition for waste sludge combustion to apply oxy-fuel combustion and CFB technologies with considering technologies for stable and economic operation.

Original languageEnglish
Pages (from-to)92-99
Number of pages8
JournalFuel
Volume170
DOIs
Publication statusPublished - 2016 Apr 15

Fingerprint

Fluidized beds
Sewage sludge
Air
Ashes
Flue gases
Fluidization
Pressure drop
Oxygen
Temperature
Economics
Chemical analysis

All Science Journal Classification (ASJC) codes

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

Cite this

Jang, Ha Na ; Kim, Jeong Hun ; Back, Seung Ki ; Sung, Jin Ho ; Yoo, Heung Min ; Choi, Hang Seok ; Seo, Yongchil. / Combustion characteristics of waste sludge at air and oxy-fuel combustion conditions in a circulating fluidized bed reactor. In: Fuel. 2016 ; Vol. 170. pp. 92-99.
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abstract = "Oxy-fuel combustion and circulating fluidized bed (CFB) technologies were applied to waste sewage sludge using a cold-bed and a 30 kWth CFB pilot test bed. In the cold-bed tests, the minimum fluidization velocity (umf) and the superficial velocity were determined as 0.120 m/s and 2.5 m/s, respectively. In pilot tests, the combustion characteristics of waste sewage sludge in oxy-fuel condition were very distinctive compared with that in air condition in terms of operation parameters such as the distribution of pressure drop and temperature, flue-gas temperature, and the composition of ash and flue-gas. Based on cold-bed and pilot bed tests, the oxygen injection rate was optimized in the range from 21{\%} to 25{\%} in oxy-fuel condition for waste sludge combustion to apply oxy-fuel combustion and CFB technologies with considering technologies for stable and economic operation.",
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Combustion characteristics of waste sludge at air and oxy-fuel combustion conditions in a circulating fluidized bed reactor. / Jang, Ha Na; Kim, Jeong Hun; Back, Seung Ki; Sung, Jin Ho; Yoo, Heung Min; Choi, Hang Seok; Seo, Yongchil.

In: Fuel, Vol. 170, 15.04.2016, p. 92-99.

Research output: Contribution to journalArticle

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AU - Jang, Ha Na

AU - Kim, Jeong Hun

AU - Back, Seung Ki

AU - Sung, Jin Ho

AU - Yoo, Heung Min

AU - Choi, Hang Seok

AU - Seo, Yongchil

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AB - Oxy-fuel combustion and circulating fluidized bed (CFB) technologies were applied to waste sewage sludge using a cold-bed and a 30 kWth CFB pilot test bed. In the cold-bed tests, the minimum fluidization velocity (umf) and the superficial velocity were determined as 0.120 m/s and 2.5 m/s, respectively. In pilot tests, the combustion characteristics of waste sewage sludge in oxy-fuel condition were very distinctive compared with that in air condition in terms of operation parameters such as the distribution of pressure drop and temperature, flue-gas temperature, and the composition of ash and flue-gas. Based on cold-bed and pilot bed tests, the oxygen injection rate was optimized in the range from 21% to 25% in oxy-fuel condition for waste sludge combustion to apply oxy-fuel combustion and CFB technologies with considering technologies for stable and economic operation.

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