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生物质化学工程 ›› 2020, Vol. 54 ›› Issue (3): 18-24.doi: 10.3969/j.issn.1673-5854.2020.03.003

• 研究报告 • 上一篇    下一篇

赤泥对玉米秸秆催化热解生物油的影响规律研究

王一青,王丽红*(),张安东,汤文谈,李志合,蔡红珍   

  1. 山东理工大学 农业工程与食品科学学院, 山东 淄博 255000
  • 收稿日期:2019-08-05 出版日期:2020-05-30 发布日期:2020-06-13
  • 通讯作者: 王丽红 E-mail:wanglh@sdut.edu.cn
  • 作者简介:王一青(1991-),男,山东烟台人,硕士生,主要从事生物质高值化利用技术研究工作
  • 基金资助:
    国家自然科学基金资助项目(51406109);国家自然科学基金资助项目(51536009);山东省自然科学基金资助项目(ZR2017MEE004)

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

Yiqing WANG,Lihong WANG*(),Andong ZHANG,Wentan TANG,Zhihe LI,Hongzhen CAI   

  1. School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China
  • Received:2019-08-05 Online:2020-05-30 Published:2020-06-13
  • Contact: Lihong WANG E-mail:wanglh@sdut.edu.cn

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,1 000℃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1 000℃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。

关键词: 赤泥, 玉米秸秆, 快速热解, 生物油

Abstract:

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 1 000 ℃(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 1 000 ℃ posed a little effects on the bio-oil composition due to the sintering.

Key words: red mud, corn straw, fast pyrolysis, bio-oil

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