摘要
为了更全面地研究新鲜生物质的热解气化过程,对2种新鲜生物质不同热解气化条件下的半焦特性进行了研究.采用X-射线衍射(XRD)法分别考察了温度、催化剂和水分对生物质热解气化半焦微晶结构的影响.实验结果表明,生物质及其热解残炭中存在类似晶体的微晶;随着热解气化温度的升高,微晶层片直径逐渐增大;加入不同催化剂热解气化后的生物质半焦微晶变小,不同催化剂对微晶结构参数影响方式不同;水分增大也使生物质热解后半焦的微晶变小.随着生物质热解气化的深入,生物质逐渐脱除了非碳原子,其结构趋于有序化;催化剂的加入和生物质中的水分对生物质的热解气化有利.
Pyrolysis gasification semicoke charateristics of two kinds of fresh biomass was studied in order to investigate the pyrolysis gasification of fresh biomass. The influences of temperature, catalysts and moisture on microcrystallite structure of pyrolysis gasification semicoke were investigated using X-ray diffraction （XRD）. The result shows that there is the microcrystallite resembling crystallite in biomass and its char, and the diameter of microcrystallite increases with the increasing of pyrolysis temperature. The size of microcrystallite become smaller in different approaches while using different catalysts. The size of microcrystallite will decrease with the increasing of moisture. Non carbon atom is detached from biomass and its structure tends to be in order as further pyrolysis gasification. Catalysts and moisture are favorable to the pyrolysis gasification of biomass.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2006年第3期336-340,366,共6页
Journal of China University of Mining & Technology
基金
国家自然科学基金项目(50474056)
安徽省教育厅自然科学基金项目(2004KJ124)
安徽省高等学校青年教师基金项目(2004JQ144)
关键词
新鲜生物质
热解气化
X-射线衍射
半焦
微晶
fresh biomass
pyrolysis gasification
X-ray diffraction
semieoke
microcrystallite
