化工学报 ›› 2019, Vol. 70 ›› Issue (8): 2835-2853.DOI: 10.11949/0438-1157.20190309

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生物质化学链转化技术研究进展

吴志强(),张博,杨伯伦()   

  1. 西安交通大学化学工程与技术学院,陕西省能源化工过程强化重点实验室,陕西 西安 710049
  • 收稿日期:2019-04-01 修回日期:2019-05-13 出版日期:2019-08-05 发布日期:2019-08-05
  • 通讯作者: 杨伯伦
  • 作者简介:吴志强(1987—),男,博士,副教授,zhiqiang-wu@mail.xjtu.edu.cn
  • 基金资助:
    国家自然科学基金项目(51606149)

Research progress on biomass chemical-looping conversion technology

Zhiqiang WU(),Bo ZHANG,Bolun YANG()   

  1. Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
  • Received:2019-04-01 Revised:2019-05-13 Online:2019-08-05 Published:2019-08-05
  • Contact: Bolun YANG

摘要:

生物质通过化学链转化制备燃料及化工原料是工程热化学领域发展的重要方向,如何有效借助化学链转化实现生物质能源的高效清洁利用是工业界和学术界关注的热点。本文回顾了生物质化学链燃烧、气化、氧解耦、重整/制氢研究进展,重点综述了载氧体在生物质化学链转化过程中的理化特性变化规律及热力学与动力学特性,对比分析了反应装置及系统的特性。基于生物质主要组分的化学特性探究预处理及灰成分对化学链转化的影响机制,充分考虑电子及氧离子传输特性的载氧体理性设计及精准构筑,在时间尺度和空间尺度上的反应器与反应本征特征匹配特性,生物质化学链转化与其他工程热化学技术耦合的多联产系统是后续研究需要关注的几个方面。

关键词: 生物质, 二氧化碳捕集, 化学链转化, 载氧体, 反应器, 过程系统

Abstract:

Preparation of fuels and chemical materials through biomass chemical looping is an important direction in the field of engineering thermochemistry. How to effectively use chemical conversion to achieve efficient and clean utilization of biomass energy is a hot spot in industry and academia. This paper reviews the research progress from the aspects of chemical-looping combustion(CLC), chemical-looping gasification(CLG), chemical looping with oxygen uncoupling(CLOU), chemical-looping reforming (CLR), and chemical-looping hydrogen generation (CLHG), and focuses on the changes of physicochemical properties of oxygen carriers in the of biomass chemical looping conversion process (BCLP). The characteristics of reaction devices and systems were compared and analyzed. Based on the chemical characteristics of the main components of biomass, the influence mechanism of pretreatment and ash composition on the chemical looping conversion process should be investigated. The rational design and accurate construction of oxygen carrier based on electron and oxygen ion transport characteristics should be fully considered. The matching of reactor and intrinsic characteristics of the reaction on time scale and spatial scale, polygeneration system coupled with biomass chemical looping conversion technology and other engineering thermochemical technologies are several aspects that need to be addressed in further research.

Key words: biomass, CO2 capture, chemical looping conversion, oxygen carrier, reactors, process systems

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