4-Layer Slagging Model을 적용한 300MW급 Shell형 1단 분류층 석탄 가스화기 전산수치해석
Numerical Study on the 300 MW Shell-type One-stage Entrained Flow Coal Gasifier Apllied with 4-Layer Slagging Model
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초록
A slag building simplified model was developed to determine wall heat flux of a Shell 300MW coal gasifier. In the model 4 layers(particulate, sintered, molten slag, solidified slag) were considered and mass conservation and energy balance were used to obtain each slag layer's thickness and surface temperature. Thermo-chemical and fluid charateristics of the gasifier were studied with and without considering the slag model using commercial CFD code FLUENT. Consideration of the slag layer did not affect syn-gas mole fractions. However, the slag layer caused to increase the exit gas temperature by about 50K.
Abstract
A slag building simplified model was developed to determine wall heat flux of a Shell 300MW coal gasifier. In the model 4 layers(particulate, sintered, molten slag, solidified slag) were considered and mass conservation and energy balance were used to obtain each slag layer's thickness and surface temperature. Thermo-chemical and fluid charateristics of the gasifier were studied with and without considering the slag model using commercial CFD code FLUENT. Consideration of the slag layer did not affect syn-gas mole fractions. However, the slag layer caused to increase the exit gas temperature by about 50K.
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