Fe/CaO载氧体作用下生物质化学链气化研究

doi:10.3976/j.issn.1002-4026.2019.05.012

山东科学 ›› 2019, Vol. 32 ›› Issue (5): 94-103.doi: 10.3976/j.issn.1002-4026.2019.05.012

Fe/CaO载氧体作用下生物质化学链气化研究

李敏^1,2, 孙来芝², 陈雷², 杨双霞²，冯洪庆¹, 张晓东^3*

1.中国石油大学（华东）储运与建筑工程学院，山东青岛 266580；2.齐鲁工业大学（山东省科学院），山东省科学院能源研究所，山东省生物质气化重点实验室，山东济南 250014；3.集美大学机械与能源工程学院，福建厦门 361021

收稿日期:2019-07-01 出版日期:2019-10-20 发布日期:2019-10-09
通信作者: 张晓东，男，教授，研究方向为生物质热转化与清洁燃料。E-mail: xd_zhang77@aliyun.com
作者简介:李敏（1993—），女，硕士研究生，研究方向为生物质定向热转化。E-mail: leemin_upc@sina.com
基金资助:
山东省自然科学基金 (ZR2018MEE029)；国家自然科学基金(51876108)

Biomass chemical looping gasification based on Fe/CaO oxygen carriers

LI Min^1,2, SUN Lai-zhi², CHEN Lei², YANG Shuang-xia², FENG Hong-qing¹, ZHANG Xiao-dong^3*

1.School of Pipeline and Civil Engineering, University of Petroleum, Qingdao 266580, China; 2. Shandong Provincial Key Laboratory of Biomass Gasification Technology, Energy Research Institute Qilu University of Technology(Shandong Academy of Sciences),Jinan 250014, China；3. School of Mechanical and Energy Engineering, Jimei University, Xiamen 361021, China

Received:2019-07-01 Online:2019-10-20 Published:2019-10-09

摘要/Abstract

摘要： 生物质化学链气化技术是一种高效的生物质能源利用技术，其过程中载氧体能够起到载氧、载热和催化的作用。为了提高载氧体的氧化还原特性，同时提高生物质气化得到合成气的产率，研究了机械混合法和浸渍法制备的Fe/CaO载氧体在生物质化学链气化过程中的作用。制备了不同Fe负载量的Fe/CaO载氧体，对其进行了XRD、CO₂-TPD和H₂-TPR表征以分析其物理化学性能。随着Fe负载量的增大，载氧体的还原性增强，同时CO₂吸收性减弱。在固定床装置上对其反应性能进行了实验研究，结果表明在反应温度为850 ℃时，随着Fe负载量增大，气体转化率逐渐增大，CO2和CO的产气量逐渐增大，H₂的产气量减少。当Fe负载量为40%得到的载氧体能够得到最大合成气产量453.4 mL，H₂和CO的产气量分别为146.6 mL和306.8 mL。

关键词: 生物质, 化学链气化, 载氧体, 合成气

Abstract: The chemical looping gasification of biomass is a promising and efficient biomass gasification technology. During this process, oxygen carriers (OCs) could play the oxygen-providing and tar-reforming roles; therefore, OC selection is a crucial factor for the chemical looping gasification of biomass. To improve the redox characteristics of the OC and optimize the yield of the syngas product, the OCs of Fe/CaO with different concentrations were prepared using the mechanical mixture and impregenation methods for biomass chemical looping gasification and studied in this article. Multiple techniques, such as XRD, CO₂-TPD and H₂-TPR were performed to analyze the characterization of the Fe/CaO OCs. The biomass chemical looping gasification experiments were conducted on a fixed bed reactor. The results denoted that the gas conversion rate increases, the output of CO₂ and CO also increases, and the output of H₂ decreases at a reaction temperature of 850°C with an increase in Fe loading. With a Fe/CaO oxygen carrier exhibiting 40% Fe loading, the experiment obtained a maximum syngas production of 453.4 mL, and the H₂ and CO gas yields were 146.6 and 306.8 mL, respectively.

Key words: biomass, chemical looping gasification;oxygen carrier, syngas

中图分类号:

李敏, 孙来芝, 陈雷, 杨双霞, 冯洪庆, 张晓东. Fe/CaO载氧体作用下生物质化学链气化研究[J]. 山东科学, 2019, 32(5): 94-103.

LI Min, SUN Lai-zhi, CHEN Lei, YANG Shuang-xia, FENG Hong-qing, ZHANG Xiao-don. Biomass chemical looping gasification based on Fe/CaO oxygen carriers[J]. Shandong Science, 2019, 32(5): 94-103.

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Fe/CaO载氧体作用下生物质化学链气化研究

Biomass chemical looping gasification based on Fe/CaO oxygen carriers

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