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HWAHAK KONGHAK,
Vol.30, No.3, 357-367, 1992
유동층 석탄 가스화 반응기 수치해석
Simulation of Fluidized Bed Coal Gasifier
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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