摘要
采用热重分析仪研究了不同混合比的小球藻和稻壳的热解特性,并采用FWO(Flynn-Wall-Ozawa)法计算了共热解反应的活化能。研究结果发现:由于组分的差别,小球藻比稻壳热解更充分,但稻壳的热解速率较快。小球藻的热解活化能普遍高于稻壳,但小球藻和稻壳以5∶5比例的共热解可以降低反应的活化能。使用热解-气相色谱/质谱联用仪对小球藻和稻壳单独热解和混合热解的产物分析结果显示,小球藻和稻壳的共热解提高了产物中烃类和苯系物的含量,也提高了酸类物质的含量。分析认为,这是由于小球藻和稻壳灰分中含有的碱金属导致的。
In order to make better use of biomass energy and agricultural waste,chlorella vulgaris(CV),rice husk(RH)and their mixture were pyrolyzed rapidly.The pyrolysis characteristics of chlorella vulgaris(CV)and rice husk(RH)under different mixing ratios were preliminarily studied by thermogravimetric analyzer,and the activation energy of co-pyrolysis reaction was calculated by Ozawa-Flynn-Wall(OFW)method.The results showed that CV pyrolyzed more fully than RH due to different compositions,but the pyrolysis rate of RH was faster.The activation energy of CV pyrolysis was higher than RH,and the co-pyrolysis of CV and RH in a ratio of 5∶5 could reduce the activation energy of reaction.The pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS)was used to analyze the products of CV and RH pyrolysis.the results showed that the co-pyrolysis of CV and RH increased the content of hydrocarbons and benzene series,and also increased the content of acids,which may be caused by alkali metals contained in the ash of CV and RH.
作者
夏雨晴
廖艳芬
马晓茜
沈娜
Xia Yuqing;Liao Yanfen;Ma Xiaoqian;Shen Na(School of Electric Power Engineering,South China University of Technology,Guangzhou 510641,China;Guangzhou City University of Technology,Guangzhou 510800,China)
出处
《可再生能源》
CAS
CSCD
北大核心
2021年第12期1570-1575,共6页
Renewable Energy Resources
基金
国家重点研发项目(2018YFC1901200)。
关键词
小球藻
稻壳
共热解
活化能
chlorella vulgaris
rice husk
co-pyrolysis
activation energy
