摘要
研究了生物质类废弃物在回转窑内的热解特性 ,讨论了物料种类、热解终温、加热方式、给料粒径和含水率对热解产物分布的影响。物料挥发份和热解终温高 ,加热快、粒径小 ,有利于燃气产率的提高以及炭产率的降低 ,而水分的提高会提高焦油的产率并降低炭的产率。同时 。
Kinds of typical biomass wastes including wood chips,rice husk,orange husk,vegetal and leaf were pyrolyzed in a technical scale rotary kiln under well defined conditions of industrial importance.The influences of final pyrolysis temperature,heating level,particle size and moisture content on the products distribution were determined.High final temperature,rapid heating rate or small particle size cause increased gas yield and reduced yields of both char and tar.With the increasing moisture content,the tar yield increases while the char decreases.The properties of material such as volatile content,C/H ratio and C/O ratio have certain impacts on pyrolysis product distribution.Meanwhile,the special temperature history of materials in rotary kiln and the transient gas release characteristics during pyrolysis process were discussed,which helps to explain the distribution and properties of pyrolytic products.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2000年第4期333-340,共8页
Acta Energiae Solaris Sinica
基金
国家211工程资助项目
国家自然科学基金重点项目资助(编号为59836210)
关键词
回转窑
生物质废弃物
热解条件
热解产物分布
热解气体析出
rotary kiln
biomass waste
reaction conditions
pyrolysis product distribution
pyrolytic gas release