摘要
Abstract
A one-dimensional steady-state mathematical model for coal slurry-fed gasifiers was developed by incorporating entrained-flow bed configuration, coal properties, chemical reactions, and heat and mass transfers within the gasifier. The external shell temperature was used as the heat transfer boundary condition, and an implicit variable step-size method was used to solve the momentum, heat and mass transfer ODEs considered in the model. Huating coal, Australia/UBE coal, Illinois no.6 coal and Eastern coal were used as examples to validate the model. The calculated results were in good agreement with the literature data. The relationship between the gasifier size and gaseous compositions, particle residence time, and carbon conversion rate was discussed using a GE gasifier with feedstock of 750 tons of Huating coal per day, and the developed model could be helpful to design and operate slurry-fed gasifiers.关键词
水煤浆/气化/气流床/数值模拟Key words
coal slurry/gasification/entrained-flow bed/numerical simulation分类
化学化工
