化工进展 ›› 2022, Vol. 41 ›› Issue (7): 3597-3607.DOI: 10.16085/j.issn.1000-6613.2021-1833

• 工业催化 • 上一篇    下一篇

催化型多孔陶瓷球制备及催化玉米秸秆热解

李玉峰1,2(), 王绍庆1,2, 张安东1,2, 毕冬梅1,2, 李志合1,2(), 高亮1,2, 万震1,2   

  1. 1.山东理工大学农业工程与食品科学学院,山东 淄博 255000
    2.山东省清洁能源工程技术研究中心,山东 淄博 255000
  • 收稿日期:2021-08-26 修回日期:2021-09-08 出版日期:2022-07-25 发布日期:2022-07-23
  • 通讯作者: 李志合
  • 作者简介:李玉峰(1995—),男,硕士研究生,研究方向为生物质能源与材料。E-mail:lyf1067176193@163.com
  • 基金资助:
    国家重点研发计划(2019YFD1100600);国家自然科学基金(52176192);山东省自然科学基金(ZR2020ME184);周村区校城融合发展计划(2020ZCXCZH09)

Preparation of catalytic porous ceramic balls and catalytic pyrolysis of corn stover

LI Yufeng1,2(), WANG Shaoqing1,2, ZHANG Andong1,2, BI Dongmei1,2, LI Zhihe1,2(), GAO Liang1,2, WAN Zhen1,2   

  1. 1.School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, Shandong, China
    2.Shandong Research Center of Engineering & Technology for Clean Energy, Zibo 255000, Shandong, China
  • Received:2021-08-26 Revised:2021-09-08 Online:2022-07-25 Published:2022-07-23
  • Contact: LI Zhihe

摘要:

针对生物质热解液化过程中生物油品质差的问题,本文以陶瓷球作热载体为研究基础,制备了5种负载金属氧化物(ZnO、NiO、CeO2、Cr2O3、Fe2O3)的多孔陶瓷球,在固定床反应器上研究多孔陶瓷球催化剂对玉米秸秆热解过程的催化效果。结果表明:多孔陶瓷球基体在热解过程中有一定催化活性,经浸渍改性处理后,都能促进生物油产率的提高,其中Ni基多孔陶瓷球热解的产率高达41.62%。多孔陶瓷球负载的5种金属氧化物可促使生物油中酚类、呋喃类物质的含量明显增加,酸类物质的含量明显降低,且种类减少,其中CeO2降酸效果显著,降低幅度为37.15%。此外,催化型多孔陶瓷球的引入促进了不可冷凝气中C n H mn≥2)的生成,烯烃类中乙烯的增长幅度最大,为50.53%,同时生物炭的理化特性在一定程度上得到改善和提高。

关键词: 多孔陶瓷球, 催化热解, 生物质, 生物油

Abstract:

In order to solve the problems of poor product quality in the process of biomass pyrolysis liquefaction, the research was based on the ceramic ball as a heat carrier, porous ceramic balls loaded with (ZnO, NiO, CeO2, Cr2O3, and Fe2O3) were produced, and the catalytic effect of porous ceramic balls catalyst in the pyrolysis process of corn stover was investigated on a fixed bed reactor. The results indicated that the prepared porous ceramic balls matrix had catalytic activity in the pyrolysis of corn stover. All modified porous ceramic balls could improve the production rate of bio-oil, and the Ni-based porous ceramic balls had the highest production rate of 41.62%. The five metal oxides supported by the porous ceramic balls could increase the content of phenols and furans obviously and reduce the acid substances in bio-oil and its types. Among them, the acid reduction effect of Ce-based porous ceramic balls was significant, with a reduction of 37.15%. The addition of catalytic porous ceramic balls promoted the production of C n H m (n≥2) in non-condensable gases, and among the olefins the ethylene increases the most, which was 50.53%. Meanwhile, the physicochemical properties of biochar were improved. The research would provide an important reference for the efficient preparation of liquid fuels and fine chemicals by the catalytic pyrolysis of biomass.

Key words: porous ceramic balls, catalytic pyrolysis, biomass, bio-oil

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