赤泥对玉米秸秆催化热解生物油的影响规律研究  

Effect of Red Mud on Bio-oil from Catalytic Pyrolysis of Corn Straw

作　　者：王一青 王丽红[1] 张安东[1] 汤文谈 李志合[1] 蔡红珍[1] WANG Yiqing;WANG Lihong;ZHANG Andong;TANG Wentan;LI Zhihe;CAI Hongzhen(School of Agricultural Engineering and Food Science,Shandong University of Technology, Zibo 255000, China)

机构地区：[1]山东理工大学农业工程与食品科学学院,山东淄博255000

出　　处：《生物质化学工程》2020年第3期18-24,共7页Biomass Chemical Engineering

基　　金：国家自然科学基金资助项目(51406109,51536009);山东省自然科学基金资助项目(ZR2017MEE004)。

摘　　要：将经过不同温度煅烧的赤泥与玉米秸秆按照一定质量比混合,在500℃下进行催化热解实验,研究赤泥对玉米秸秆生物油组成的影响规律。经TG-DTG和XRD分析发现:600℃煅烧后赤泥(RM600)中含水矿物失水,1000℃煅烧后赤泥(RM1000)中碳酸盐类化合物分解完全,并且发生了烧结反应。对生物油进行GC/MS分析发现:经过干燥的赤泥(RM)和600℃煅烧的赤泥对羧酸酮基化反应具有明显促进作用,酸类的量降低,酮类的量相应增加,同时对呋喃类的生成也有促进作用。其中,干燥赤泥降酸作用更明显,玉米秸秆与赤泥质量比1∶5时,生物油中酸类的量由未添加赤泥时的23.85%降至0.90%。此外,2种赤泥对糖类和醛类都有抑制作用,而1000℃煅烧的赤泥发生烧结反应,催化作用大幅降低,对生物油组分影响较小。Corn stalk was pyrolyzed at 500℃with red mud,which calcined under different temperature,to investigate the effect of red mud addition on the bio-oil composition.TG-DTG and XRD analysis of the calcined red mud indicated that the red mud dehydrated after being calcined under 600℃(RM600),and decomposed completely and sintered when it calcined at 1000℃(RM1000).GC/MS analysis of the bio-oil implied that both the red mud dried at 105℃(RM)and that calcined at 600℃substantially promoted the ketonization reactions of carboxylic acids.With the addition of RM and RM600,the carboxylic acids content in the bio-oil decreased,correspondingly the ketones content in the bio-oil increased.The acid-reducing effect of RM was wore obvious,as the mass ratio of corn stalk and RM was 1∶5,the amount of acids in the bio-oil decreased to 0.90%from 23.85%which was obtained without red mud.In addition,RM and RM600 had a positive effect on the furans formation while suppressed the formation of sugars and aldehydes.However,the red mud calcined under 1000℃posed a little effects on the bio-oil composition due to the sintering.

关 键 词：赤泥 玉米秸秆 快速热解 生物油 

分 类 号：TQ35[化学工程]