中国农业科技导报2025，Vol.27Issue(5)：164-172,9.DOI:10.13304/j.nykjdb.2023.0880
栎树皮与玉米秸秆共热解行为及热解产物分析研究
Investigation of Co-pyrolysis Behavior and Pyrolysis Product Analysis of Oak Bark and Corn Stalks
摘要
Abstract
Co-pyrolysis of corn stalk as an agroforestry waste with oak bark helps to improve the thermal conversion efficiency of oak bark,which is of great significance for its large-scale application as an energy substance.In order to investigate the co-pyrolysis characteristics of oak bark and corn stalk,the weight loss behavior,product yield during co-pyrolysis process were investigated by thermogravimetric analyzer and tube furnace,and the pyrolysis gas,pyrolysis oil and char were also analyzed.The results showed that the co-pyrolysis process increased the peak of weight loss rate,and with the increase of addition amount of corn stalk,the peak of weight loss rate in the temperature range of 350～425℃gradually increased,indicating that the co-pyrolysis promoted the volatile release of oak bark.In addition,the increase of corn stalk addition promoted the generation of both pyrolysis char and gas products,and the increase rate of pyrolysis gas was increased.The production rate of pyrolysis oil was suppressed,and the polycyclic aromatic hydrocarbon(PAHs)(tricyclic and tetracyclic)had the highest decreasing rates of 6.30%and 18.49%,respectively.However,at the high addition of corn stalk,the decrease rates of yield of monocyclic and bicyclic PAHs were relatively low.Furthermore,the Raman band area ratio I(Gr+Vl+Vr)/ID of char gradually decreased with the increase of addition amount of corn stalk,and its decrease rate gradually increased,showing the increase in aromatization of char.The main reason for the above phenomenon was due to the faster weight loss rate of corn stalk during pyrolysis,and the alkali metal catalysts in corn straw promoted the conversion of high molecular hydrocarbons to low molecular hydrocarbons.This leaded to an increase in the weight loss activity of and gas yield during the co-pyrolysis process with high corn stalk additions,as well as a significant decrease in the yield of more cyclic PAHs.关键词
栎树皮/玉米秸秆/共热解/产物产率/碱金属Key words
oak bark/corn stalk/co-pyrolysis/product yield/alkali metal分类
资源环境引用本文复制引用
段丽君,丁献华,李为琴,闫双堆..栎树皮与玉米秸秆共热解行为及热解产物分析研究[J].中国农业科技导报,2025,27(5):164-172,9.基金项目
山西省重点研发计划项目(201803D221003-2) （201803D221003-2）
山西农业大学博士启动计划项目(2022BQ37) （2022BQ37）
山西省教育科学"十四五"规划课题项目(GH-220737). （GH-220737）
