Fe基催化剂在生物质催化气化中制富氢气体的应用

doi:10.3969/j.issn.1674-1951.2021.10.004

摘要/Abstract

摘要：

生物质气化过程中产生的焦油,是阻碍生物质气化发展的一个主要原因。为减少合成气中的焦油、增加氢气产率,可以采用物理方法和化学方法去除生物质气化气中的焦油。介绍了生物质催化制氢常见的几类催化剂,分析了不同氧化状态的Fe基催化剂的催化能力、催化反应机理及性能。总结了气化炉中氧势、载体类型及其Fe催化剂相互作用对Fe基催化剂产生的影响。介绍了新型的化学链气化技术,并分析了生物质化学链气化中Fe基载氧体的性能、载体对Fe基载氧体的影响,以及添加了La,Mn,Ni等元素的新型复合Fe基载氧体的性能。最后,对Fe基催化剂的研究方向作出展望。

关键词: 生物质气化, 焦油, Fe基催化剂, 化学链气化, 碳中和, 催化活性, 水蒸气重整反应, 制氢

Abstract:

Tar, a by-production from biomass gasification, is a main obstacle that hinders the development of biomass gasification. The main methods of tar removal from gasified biomass can be classified into physical and chemical methods. The catalysts of biomass pyrolysis for hydrogen production were summarized. The catalytic ability, reaction mechanism and performance evaluation of Fe-based catalysts with different oxidation states were analyzed. Then, the influence of oxygen potential, carrier type and interaction between carriers and Fe catalyst on Fe-based catalyst was summarized.The new chemical looping gasification technology was introduced.The performance of Fe-based oxygen carrier in biomass chemical looping gasification and the performance of the new composite Fe-based oxygen carriers added with La, Mn, Ni and other elements were analyzed. The research direction of Fe-based catalysts is made.

Key words: biomass gasification, tar, Fe-based catalyst, biomass chemical looping gasification, carbon neutrality, catalytic activity, steam reforming, hydrogen production

中图分类号:

周瑜枫, 王学涛, 梁彦正, 罗绍峰. Fe基催化剂在生物质催化气化中制富氢气体的应用[J]. 华电技术, 2021, 43(10): 31-42.

ZHOU Yufeng, WANG Xuetao, LIANG Yanzheng, LUO Shaofeng. Research progress of Fe based catalysts for hydrogen-rich gas production from biomass catalytic gasification[J]. Huadian Technology, 2021, 43(10): 31-42.

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催化剂	预还原	体积分数/%				焦油产量/(g·m^-3）	焦油转化率/%	水转化率/%	文献
催化剂	预还原	H₂	CO₂	CO	CH₄	焦油产量/(g·m^-3）	焦油转化率/%	水转化率/%	文献
olivine	是	39.0	26.0	24.0	10.0	3.67		16	[20]
Fe/olivine	是	53.0	28.0	13.0	6.0	1.18		20	[20]
olivine	否	28.5	24.8	31.8	10.3	5.10			[21]
Fe/olivine	否	29.6	29.6	26.2	10.2	3.70			[21]
进口气体	是	35.0	17.0	35.0	10.0				[22]
olivine	是	39.2	19.1	30.2	11.4		39
10Fe/olivine1000^①	是	49.5	18.2	27.3	4.9		91