석탄유동층 연소로에서의 Freeboard 연소특성 II. 수학적 모델링

박영성; 김영성; 손재익; 맹기석

HWAHAK KONGHAK, Vol.32, No.1, 18-27, February, 1994

Export Citation

석탄유동층 연소로에서의 Freeboard 연소특성 II. 수학적 모델링

Characteristics of the Freeboard Combustion in a Fluidized-Bed Coal Combustor-II. Mathematical Modeling

박영성, 김영성, 손재익, 맹기석

초록

국내 무연탄을 대상으로하는 유동층 연소로에 있어서 freeboard에서 일어나는 탄소연소반응을 해석하기 위해 연소로내 탄소비산구조를 설정하고 관련된 reaction kinetics 를 적용하여 freeboard 탄소연소반응의 수식모델을 전개하였다. 모델의 해석을 통해 산출된 탄소연소율, 가스농도분포 및 온도분포 등의 freeboard 탄소연소반응의 주요 특성치는 실험치와 비교적 근사한 일치를 보였으며, 모델에 적용된 kinetic parameter중 탄소연소반응의 표면반응속도상수는 freeboard내 온도 및 가스조성에 커다란영향을 주며 CO 재연소반응속도상수는 CO 농도분포에 지배적인 영향을 주는 것으로 나타났다.

A mathematical model for the carbon combustion reaction in the freeboard of a fluidized bed combustor using domestic anthracite coal was developed by using the entrainment mechanism of unburned carbon particle and applying the related reaction kinetics. The extent of carbon combustion, gas composition and temperature distributions in the freeboard can be determined from the proposed model. It was also found that among the kinetic parameters, the surface reaction rate constant gives significant effects on the temperature and gas compositions in the freeboard, while the CO combustion reaction rate constant gives a dominant effect on CO composition in the freeboard.

[References]

Chen LH, Wen CY, AIChE J., 28, 1019 (1982)
Chen GT, Shang JY, Wen CY, Proc. of the 1st China-Japan Symp. on Fluidization, Vol. 1, 1 (1985)
Walsh PM, Chaung TZ, Dutta A, Beer BM, Sarofim AF, Prepr. Paper Am. Chem. Soc. Div. Fuel, 27, 243 (1982)
Gibbs BM, Beer JM, J. Chem. Eng. Symp. Ser., 43 (1975)
Tang JT, Duqun JN, Modrak TM, Aulisis CJ, Proc. of the 7th Int. Conf. of the 7th Int. Conf. on FBC, 373 (1982)
Martens FJA, Brouw H, van Koppen CWJ, Proc. of the 7th Int. Conf. on FBC, 1054 (1982)
Hirama J, Hosoda H, Nishizaki H, Chiba T, Kobayashi H, Int. Chem. Eng., 24(3), 502 (1984)
Wells JW, Byrd JR, Krishnan RP, Proc. of the 7th Int. Conf. on FBC, 2, 284 (1982)
Tung SE, Chaung TZ, Sharma PK, Hodges J, Louis JF, Proc. of the 6th Int. Conf. on FBC, 3, 1131 (1980)
Zhang XH, Cao YQ, Ren YZ, Chen J, Hong YH, Proc. of the 8th Int. Conf. on FBC, Vol. 1, 75 (1985)
Tomita M, Hirama T, Adachi T, Fluidization Science and Technology, ed. by Kwauk, M. and Kunii, D., 1-11 (1982)
Park YS, Ghim YS, Son JE, Maeng KS, HWAHAK KONGHAK, 28(5), 568 (1990)
Sarofim AF, Beer JM, Colloquium Coal Combus., 189 (1979)
Choi JH, Park YS, Park YO, Park WH, Son JE, Korean J. Chem. Eng., 2(2), 111 (1985)
Rajan RR, Wen CY, AIChE J., 26, 642 (1980)
Wen CY, Lee S, Coal Conversion Technology, Addison-Wesley Publishing Co., 130 (1979)
Arthur JR, Trans. Faraday Soc., 47, 165 (1951)
Yates JG, Rowe PN, Trans. Inst. Chem. Eng., 55, 137 (1977)
Pillai KK, Fuel, 60, 163 (1981)
Hottel HC, Williams GC, Nerheim NM, Schneider GR, 10th Int. Symp. on Combustion, 111 (1965)
Park YS, Son JE, HWAHAK KONGHAK, 28(3), 320 (1990)
Bak YC, Son JE, Kim SD, HWAHAK KONGHAK, 23(4), 213 (1985)
Barrett D, Commonwealth of Australia National Energy Research Development and Demonstration Program, ISSN 0811-9570 (1984)
Babu SP, Shah B, Talwalker A, AIChE Symp. Ser., 176(74), 176 (1978)
Kuni D, Levenspiel O, Fluidization Engineering, John Wiley & Sons, 76 (1969)
Froessling W, Chapter 24 in Momentum, Heat, and Mass Transfer, ed. by Bennett, C.O. and Myers, J.E., 2nd ed., McGraw-Hill Inc. (1974)
Wang TS, Zhang YF, Pan ZG, Ren AF, Zhang Y, Proc. of the 1st China-Japan Symp. on Fluidization, Vol. 2, 1 (1985)
Park YS, Son JE, HWAHAK KONGHAK, 31(3), 287 (1993)
박영성, 석탄유동층 연소로에서의 Freeboard 연소특성에 관한 연구, 충남대학교 박사학위논문 (1989)
남궁원, 조용준, 김상돈, 화학공학회 추계학술발표회 논문초록집, 220 (1992)

[Referenced By]

[1] Chen LH, Wen CY, AIChE J., 28, 1019 (1982)

[2] Chen GT, Shang JY, Wen CY, Proc. of the 1st China-Japan Symp. on Fluidization, Vol. 1, 1 (1985)

[3] Walsh PM, Chaung TZ, Dutta A, Beer BM, Sarofim AF, Prepr. Paper Am. Chem. Soc. Div. Fuel, 27, 243 (1982)

[4] Gibbs BM, Beer JM, J. Chem. Eng. Symp. Ser., 43 (1975)

[5] Tang JT, Duqun JN, Modrak TM, Aulisis CJ, Proc. of the 7th Int. Conf. of the 7th Int. Conf. on FBC, 373 (1982)

[6] Martens FJA, Brouw H, van Koppen CWJ, Proc. of the 7th Int. Conf. on FBC, 1054 (1982)

[7] Hirama J, Hosoda H, Nishizaki H, Chiba T, Kobayashi H, Int. Chem. Eng., 24(3), 502 (1984)

[8] Wells JW, Byrd JR, Krishnan RP, Proc. of the 7th Int. Conf. on FBC, 2, 284 (1982)

[9] Tung SE, Chaung TZ, Sharma PK, Hodges J, Louis JF, Proc. of the 6th Int. Conf. on FBC, 3, 1131 (1980)

[10] Zhang XH, Cao YQ, Ren YZ, Chen J, Hong YH, Proc. of the 8th Int. Conf. on FBC, Vol. 1, 75 (1985)

[11] Tomita M, Hirama T, Adachi T, Fluidization Science and Technology, ed. by Kwauk, M. and Kunii, D., 1-11 (1982)

[12] Park YS, Ghim YS, Son JE, Maeng KS, HWAHAK KONGHAK, 28(5), 568 (1990)

[13] Sarofim AF, Beer JM, Colloquium Coal Combus., 189 (1979)

[14] Choi JH, Park YS, Park YO, Park WH, Son JE, Korean J. Chem. Eng., 2(2), 111 (1985)

[15] Rajan RR, Wen CY, AIChE J., 26, 642 (1980)

[16] Wen CY, Lee S, Coal Conversion Technology, Addison-Wesley Publishing Co., 130 (1979)

[17] Arthur JR, Trans. Faraday Soc., 47, 165 (1951)

[18] Yates JG, Rowe PN, Trans. Inst. Chem. Eng., 55, 137 (1977)

[19] Pillai KK, Fuel, 60, 163 (1981)

[20] Hottel HC, Williams GC, Nerheim NM, Schneider GR, 10th Int. Symp. on Combustion, 111 (1965)

[21] Park YS, Son JE, HWAHAK KONGHAK, 28(3), 320 (1990)

[22] Bak YC, Son JE, Kim SD, HWAHAK KONGHAK, 23(4), 213 (1985)

[23] Barrett D, Commonwealth of Australia National Energy Research Development and Demonstration Program, ISSN 0811-9570 (1984)

[24] Babu SP, Shah B, Talwalker A, AIChE Symp. Ser., 176(74), 176 (1978)

[25] Kuni D, Levenspiel O, Fluidization Engineering, John Wiley & Sons, 76 (1969)

[26] Froessling W, Chapter 24 in Momentum, Heat, and Mass Transfer, ed. by Bennett, C.O. and Myers, J.E., 2nd ed., McGraw-Hill Inc. (1974)

[27] Wang TS, Zhang YF, Pan ZG, Ren AF, Zhang Y, Proc. of the 1st China-Japan Symp. on Fluidization, Vol. 2, 1 (1985)

[28] Park YS, Son JE, HWAHAK KONGHAK, 31(3), 287 (1993)

[29] 박영성, 석탄유동층 연소로에서의 Freeboard 연소특성에 관한 연구, 충남대학교 박사학위논문 (1989)

[30] 남궁원, 조용준, 김상돈, 화학공학회 추계학술발표회 논문초록집, 220 (1992)