油菜秸秆与褐煤共燃反应性能研究  

A study on co-combustion reaction performance of rape straw and lignite

作　　者：陈家琳 李雪梅 付莹莹 宋银敏[1,2] 何润霞[1,2] CHEN Jialin;LI Xuemei;FU Yingying;SONG Yinmin;HE Runxia(College of Chemical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Inner Mongolia Key Laboratory of High-Value Functional Utilization of Low Rank Carbon Resources,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学化工学院,呼和浩特010051 [2]内蒙古工业大学内蒙古自治区低阶碳质资源高值功能化利用重点实验室,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2024年第6期535-541,共7页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：内蒙古自治区自然科学基金项目(2019MS02025,2020MS02023)。

摘　　要：以油菜秸秆和褐煤为研究对象,对油菜秸秆进行不同温度(300、400、500℃)的热处理,在此基础上,将热处理后的油菜秸秆以一定比例分别掺混到褐煤中,通过SEM、FT-IR、XRD等表征手段分析热处理油菜秸秆的结构差异,同时利用热重分析仪考察热处理油菜秸秆及其与褐煤掺混物的燃烧反应性能,并分析对比掺混物之间的协同效应。结果表明,热处理的油菜秸秆由于挥发分的分解析出使其燃烧反应性能下降,且随着热处理温度的增加,脂肪族基团和含氧官能团减少,稳定的芳香化合物相对增多。热处理的油菜秸秆和褐煤的掺混物均出现燃烧滞后现象,随油菜秸秆处理温度的增加,二者掺混物挥发分的燃烧失重峰逐渐减弱,而固定碳燃烧的失重速率在500℃时最小,最大失重速率对应的温度相差不大。热处理温度大于400℃时掺混物之间燃烧的协同效应明显减弱。This study makes an investigation of the co-combustion performance of rape straw and lignite.First,rape straw was heat-treated at different temperatures(300,400,500 ℃).Then,the heat-treated rape straw was mixed into lignite in a certain proportion.The structural differences of heat-treated rape straw were analyzed by SEM,FT-IR,XRD and other characterization methods.At the same time,the combustion reaction performance of heat-treated rape straw and its blends with lignite was investigated by thermogravimetric analyzer,and the synergistic effect between the blends was analyzed and compared.The results showed that the combustion reaction performance of heat-treated rape straw is decreased due to the decomposition and precipitation of volatile matter.With the increase of heat treatment temperature,aliphatic groups and oxygen-containing functional groups are decrease,and stable aromatic compounds increase relatively.The blends of heat-treated rape straw and lignite show combustion hysteresis.With the increase of rape straw treatment temperature,the combustion weight loss peak of the volatiles of the blends is gradually weakened,while the weight loss rate of fixed carbon combustion is the smallest at 500 ℃,and the temperature corresponding to the maximum weight loss rate is not much different.When the heat treatment temperature is higher than 400 ℃,the synergistic effect of combustion between the blends is significantly weakened.

关 键 词：褐煤 油菜秸秆 热处理 共燃烧 协同效应 

分 类 号：TQ534[化学工程—煤化学工程]