摘要
在一台自行研制的循环流化床气化炉上进行了模拟城市生活垃圾低温气化试验.结果表明,随气化温度升高,气化气体低位热值明显增高,可燃组分含量也随之增大,尤其是当气化温度从500℃升高到600℃时,气化气体中CO、H2和CH4含量显著增加;随着过量空气系数的增大,气化气体中可燃组分含量和气化气体低位热值均减小;垃圾中适当保持一定水分含量,有利于提高其气化气体中可燃组分含量和气化气体低位热值.同时采用ASPENPLUS软件建立了垃圾流化床气化模型,通过改变气化温度、过量空气系数和垃圾全水分含量进行模拟计算,结果显示,各工况下生成气化气体低位热值的模拟值和试验值符合较好,证明该模型可用于城市生活垃圾气化特性的预测和分析.
The experiment for low-temperature gasification of municipal solid waste （MSW） was performed in a fluidized bed gasifier. The results can be summarized as follows. As gasification temperature rises, both the gasified gas low heating value （LHV） of and the content of fuel gases in the gasified gas will increase. When gasification temperature increases from 500℃ to 600℃, CO, H2 and CH4 in gasified gas increase obviously. With the increase of excessive air ratio（EAR） , the content of fuel gases in and the LHV of the gasified gas will both decrease. With the increase of water content （ M1 ）, the content of fuel gases in and the LHV of gasified gas will both increase. In addition, model of MSW gasification was established by ASPEN PLUS. Under different gasification temperatures, EAR and Mt of MSW, the model predictions of gasified gas LHV were compared with the experimental data, and the comparison result shows that they are in satisfying agreement. Therefore, the model can be used to predict and analyze the characteristics of gasification of MSW.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2009年第2期161-166,共6页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(50676021)
关键词
城市生活垃圾
循环流化床
气化
municipal solid waste
circulated fluidized bed
gasification
