Effect of Ash Compositions on Air Pollutant Emissions during Fluidized Bed Sludge Incineration

Mi-Ran Kim; Jeong-Gook Jang; Jea-Keun Lee

Korean Journal of Chemical Engineering, Vol.22, No.1, 61-66, January, 2005

DOI10.1007/BF02701463 Export Citation

Effect of Ash Compositions on Air Pollutant Emissions during Fluidized Bed Sludge Incineration

Mi-Ran Kim, Jeong-Gook Jang¹, and Jea-Keun Lee^†

Dept. of Environ. Eng., Pukyong National University, Busan 608-737, Korea
¹Dept. of Environ. Eng., Dongseo University, Busan 617-716, Korea

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A simulation using a thermodynamic equilibrium model was performed to predict the effect of ash compositions on the behavior of air pollutants during fluidized bed sludge incineration. To investigate emission characteristics, the incineration temperature, air-fuel ratio ( λT) and contents of calcium and chlorine were chosen as major operating parameters. For the analyses of the desulfurization of SOx and the pollutant emissions by the limestone addition, the Ca/S molar ratio was changed from 0.5 up to 7.0. According to the simulation, NOx was not influenced markedly by the air-fuel ratio, though greatly influenced by operating temperature. The effect of desulfurization with limestone addition was greatly influenced by ash composition, and desulfurization occurred over the Ca/S molar ratio of 5.5. This was attributed to the fact that the reactivity of the P component in ash to the added CaO was higher than that of sulfur in fuel.

Keywords:Ash Composition;Desulfurization;Phosphoric Compound;Equilibrium Model

[References]

Cooper CD, Alley FC, Air Pollution Control: A Design Approach, PWS Engineering, Boston (1986)
Desroches-Ducarne E, Dolignier JC, Marty E, Martin G, Delfosse L, Fuel, 77(13), 1399 (1998)
Fenimore CP, "Nitric Oxide in Premixed Hydrocarbon Flames", 13th. Symp. (Int.) Combust., 373 (1971)
Gibbs BM, Hampartsoumian E, Limiting Air Pollution from Atmospheric Fluidized Bed Combustors in Fluidized Bed Boilers: Design and Applications, Pergamon Press, Canada (1984)
Jang JG, Kim WH, Kim MR, Chun HS, Lee JK, Korean J. Chem. Eng., 18(4), 506 (2001)
Kawaguchi M, J. Envrion. Pollut. Contr., 21, 853 (1985)
Lee JK, Lee KH, Jang JG, Lim JH, Lim JS, Chun HS, HWAHAK KONGHAK, 30(4), 499 (1992)
Lee KH, "Combustion Characteristics of Sewage Sludge and Reduction of Pollutants in Fluidized Bed Incinerators", Ph D. Dissertation, National Fisheries University of Pusan, Korea (1992)
Lin SY, Shawabkeh A, Matsuda H, Horio M, Hasatani M, J. Chem. Eng. Jpn., 28, 708 (1994)
Manzoori AR, Agarwal PK, Fuel, 72, 7 (1993)
Outokumpu Research Oy Information Service, "Outokumpu HSC Chemistry for Windows", ISBN 952-9507-05-4, Pori, Filand (1999)
Seo YS, Kim MR, Eom KS, Lee JK, J. Korean Society of Environmental Envineers, 21, 1621 (1999)
Yan R, Gauthier D, Flamant G, Badie JM, Fuel, 78(15), 1817 (1999)
Zeldovich YB, Sadovnikov PY, Frank-Kamenetskill DA, Oxidation of Nitrogen in Combustion, Academy of Science, U.S.S.R. (1947)
Zevenhoven-Onderwater M, Blomquist JP, Skrifvars BJ, Backman R, Hupa M, Fuel, 79, 1353 (2000)

[Referenced By]

[1] Cooper CD, Alley FC, Air Pollution Control: A Design Approach, PWS Engineering, Boston (1986)

[2] Desroches-Ducarne E, Dolignier JC, Marty E, Martin G, Delfosse L, Fuel, 77(13), 1399 (1998)

[3] Fenimore CP, "Nitric Oxide in Premixed Hydrocarbon Flames", 13th. Symp. (Int.) Combust., 373 (1971)

[4] Gibbs BM, Hampartsoumian E, Limiting Air Pollution from Atmospheric Fluidized Bed Combustors in Fluidized Bed Boilers: Design and Applications, Pergamon Press, Canada (1984)

[5] Jang JG, Kim WH, Kim MR, Chun HS, Lee JK, Korean J. Chem. Eng., 18(4), 506 (2001)

[6] Kawaguchi M, J. Envrion. Pollut. Contr., 21, 853 (1985)

[7] Lee JK, Lee KH, Jang JG, Lim JH, Lim JS, Chun HS, HWAHAK KONGHAK, 30(4), 499 (1992)

[8] Lee KH, "Combustion Characteristics of Sewage Sludge and Reduction of Pollutants in Fluidized Bed Incinerators", Ph D. Dissertation, National Fisheries University of Pusan, Korea (1992)

[9] Lin SY, Shawabkeh A, Matsuda H, Horio M, Hasatani M, J. Chem. Eng. Jpn., 28, 708 (1994)

[10] Manzoori AR, Agarwal PK, Fuel, 72, 7 (1993)

[11] Outokumpu Research Oy Information Service, "Outokumpu HSC Chemistry for Windows", ISBN 952-9507-05-4, Pori, Filand (1999)

[12] Seo YS, Kim MR, Eom KS, Lee JK, J. Korean Society of Environmental Envineers, 21, 1621 (1999)

[13] Yan R, Gauthier D, Flamant G, Badie JM, Fuel, 78(15), 1817 (1999)

[14] Zeldovich YB, Sadovnikov PY, Frank-Kamenetskill DA, Oxidation of Nitrogen in Combustion, Academy of Science, U.S.S.R. (1947)

[15] Zevenhoven-Onderwater M, Blomquist JP, Skrifvars BJ, Backman R, Hupa M, Fuel, 79, 1353 (2000)