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유동층 석탄 가스화 반응기 수치해석
Simulation of Fluidized Bed Coal Gasifier
HWAHAK KONGHAK, June 1992, 30(3), 357-367(11), NONE
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Abstract
직경 7.5cm 실험실용 유동층 석탄 가스화 반응기를 수치 해석하기 위하여 기체의 경우 bubble assemblage model, 고체의 경우 population balance model을 기초로 하여 지수함수형태의 단위 기초반응속도식을 적용 해석하였다. 반응기 온도(750-1000℃), 공기 유량(1.5-5.0kg/hr-air/kg/hr-char), 수증기 유량(0.5-2.5kg/hr-steam/kg/hr-char)변화 조건에서 생성가스는 H2(10-30%), CO(5-20%), CO2(6-12%), CH4(2-4%)의 몰 농도 조성 변화를 나타내었다.
The numerical analysis for the 7.5cm I.D. atmospheric lab. scale fluidized bed coal gasifier was conducted with the bubble assemblage model for gas, the population balance model for solid, and the basic coal gasification kinetic equation in the form of power law. The mole percent of H2 in the product gas was 10-30%, that of CO was 5-20%, that of CO2 was 6-12%, and that of CH4 was 2-4% with variation of the simulation condition such as temperature(750-1000℃), air flow rate(1.5-5.0kg/hr-air/kg/hr-char),and steam flow rate(0.5-2.5kg/hr-steam/kg/hr-char).
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Johnson JL, Adv. Chem. Ser.(131), 145 (1974)
Sundaresan S, Amundson NR, Chem. Eng. Sci., 34, 355 (1979)
Weimer AW, Clough DE, Chem. Eng. Sci., 36, 549 (1981)
Neogi D, Chang CC, Walawender WP, Fan LT, AIChE J., 32, 17 (1986)
Rheinhart RR, Felder RM, Ferrell JK, Ind. Eng. Chem. Res., 26, 2048 (1987)
Bak YC, Yang HS, Son JE, HWAHAK KONGHAK, 29(3), 323 (1991)
박영철, 양현수, 손재익, 에너지 R&D, 13(1), 85 (1991)
Bak YC, Yang HS, Son JE, HWAHAK KONGHAK, 30(1), 80 (1992)
Field MA, Gill DW, Morgan BB, Hawksley PG, "Combustion of Pulverized Coal," Bcura, Leatherhead, England (1967)
Bak YC, Son JE, Kim SD, HWAHAK KONGHAK, 23(4), 213 (1985)
Barrett D, "Gasification of Char in Fluidized Bed System," Commonwealth of Australia National Energy Research Development and Demonstration Program, ISSN 0811-9570 (1984)
Babu SP, Shar B, Talwalker A, AIChE Symp. Ser., 176(74), 176 (1978)
Wen CY, Hashinger RF, AIChE J., 6, 220 (1960)
Geldart D, Powder Technol., 7, 285 (1973)
Mori S, Wen CY, AIChE J., 21, 109 (1975)
Horio M, Wen CY, AIChE Symp. Ser., 73(161), 9 (1979)
Harrison D, Davidson JF, Kock JW, Trans. Instn. Chem. Eng., 39, 202 (1961)
Davidson JF, Harrison D, "Fluidized Particles," Cambridge Univ. Press (1963)
Kobayashi H, Ari F, Sunagawa T, Kagaku Kogaku, 31, 239 (1967)
Kunii D, Levenspiel O, "Fluidization Engineering," John Wiley & Sons, N.Y. (1969)
Davidson JF, Harrison D, "Fluidized Particles," Cambridge Univ. Press (1963)
Merry JMD, AIChE J., 21, 507 (1975)
Behie LA, Kehoe P, AIChE J., 19(5), 1070 (1973)
Geldart D, Cullinam J, Georghiades S, Gilvray D, Pope DJ, Trans. IChemE, 57, 269 (1979)
Merrick D, Highley J, AIChE Symp. Ser., 137(70), 366 (1974)
Johnson JL, "Chemistry of Coal Utilization," ed. by Elliott, M.A., 2nd Supplementary Volume, John Wiley & Sons, Chap. 23, 1491-1598 (1981)
Kato K, Wen CY, Chem. Eng. Sci., 24, 1351 (1969)
Levenspiel O, Kunii D, Fitzgerald T, Powder Technol., 2, 87 (1968)
Szekely J, Evans JW, Sohn HY, "Gas-Solid Reactions," Academic Press, N.Y. (1976)
Froment GF, Bischoff KB, "Chemical Reactor Analysis and Design," John Wiley & Sons, N.Y., p. 180 (1979)
Denn MM, Yu W, Ind. Eng. Chem. Process Des. Dev., 18, 286 (1979)
