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Drop Tube Reactor에서 석탄슬러리 가스화 특성

Gasification Characteristics of Coal-Slurry in a Drop Tube Reactor

김용전 이종민 이재구 김재호 김정래 김상돈

Kim YJ Lee JM Lee JG Kim JH Kim JR Kim SD

HWAHAK KONGHAK, October 1997, 35(5), 799-804(6), NONE

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Abstract

Drop tube reactor(0.05m-I.D*1m-high)에서 석탄슬러리 가스화반응특성을 파악하고자 반응온도(1,200-1,500℃), 산소/석탄비(0.3-1.5), 슬러리 농도(50, 55, 58wt.%), 탄종에 따른 영향을 실험하였다. 반응온도가 증가함에 따라, H₂와 CO의 조성은 증가하나 CO₂는 감소하였다. 산소/석탄비가 증가함에 따라 탄소전환율, 황전환율, 생성가스 수율, CO2의 농도는 증가하고 CO와 H₂의 수율은 산소/석탄비가 0.6일 때 최대값을 보였다. 슬러리 농도의 증가는 탄소전환율, 황전환율, 생성가스 수율을 증가시키나 H₂/CO의 비는 감소시켰다. 고등급탄의 경우, 동일한 석탄가스화 전환율을 얻기 위해서는 더 긴 체류시간이 필요하였다.

The effects of reaction temperature(1,200-1,500℃), oxygen/coal ratio(0.3-1.5), slurry concentration(50, 55, 58wt%), and coal type on gasification characteristics of coal-slurry in a drop tube reactor(0.05m-I.D.×1m-high) have been determined. The contents of H₂ and CO increase whereas, CO₂ decrease with increasing reaction temperature. Carbon conversion, sulfur conversion, product gas yield and concentrations of CO₂ increase with increasing O₂/coal ratio whereas, the product gas yield of H₂ and CO exhibit the maximum values at O₂/coal=0.6. With increasing slurry concentration, carbon conversion, sulfur conversion, total product gas yield increase, but the molar ratio of H₂/CO decrease. The longer residence time is required to gasify the higher rank coals.

Keywords

Coal-slurry Gasification Drop Tube Reactor

References

Takematsu T, Maude C, "Coal Gasification for IGCC Power Generation," IEACR/37, IEA Coal REsearch, London (1991)
Wen CY, Chaung TZ, Ind. Eng. Chem. Process Des. Dev., 18, 684 (1979)
Kwon TW, Kim SD, Fung DPC, Fuel, 67, 530 (1988)
Kwon TW, Kim JR, Kim SD, Park WH, Fuel, 68, 416 (1988)
Song BH, Kim SD, Fuel, 72, 797 (1993)
Lee WJ, Kim SD, Fuel, 74, 1387 (1995)
Lee JM, Kim YJ, Lee WJ, Kim SD, HWAHAK KONGHAK, 35(1), 121 (1997)
Brown BW, Smoot LD, Hedman PO, Fuel, 65, 673 (1986)
Flaxman RJ, Hallett WLH, Fuel, 66, 607 (1987)
Lee JG, Kim JH, Lee HJ, Park TJ, Kim SD, Fuel, 75, 1035 (1996)
Badzioch S, Hawksley GW, Ind. Eng. Chem. Process Des. Dev., 9, 521 (1970)
Scaroni AW, Walker PL, Essenhigh RH, Fuel, 60, 71 (1981)
Artos V, Scaroni AW, Fuel, 72, 927 (1993)
Saito M, Sato M, Sadakata M, Fuel, 70, 709 (1991)
Abi Ei-Samed AK, Hampartsoumian E, Farag TM, Williams A, Fuel, 69, 1029 (1990)
Shu-Cai G, Hedden K, Bd. 35, Hett 7,329 (1982)
Nsakala NY, Patel RL, Lao TC, "Combustion and Gasfication Characteristics of Chars from Four Commercially Significant Coal of Different Rank," CE Research Project AP-2601, Final Report for EPRI (1982)
Azuhata S, Hedman PO, Smoot LD, Fuel, 65, 212 (1986)
Cornils B, Hibbel J, Ruprecht P, Durrfeld R, Langhoff J, Hydrocarb. Process., 149 (1981)
Lee JG, Ph.D. Dissertation, KAIST, Korea (1997)
Tsai CY, Scaroni AW, Fuel, 66, 1400 (1987)