CIESC Journal ›› 2023, Vol. 74 ›› Issue (6): 2249-2263.DOI: 10.11949/0438-1157.20230170

• Reviews and monographs • Previous Articles     Next Articles

Research progress in downer fluidized bed reactor for biomass fast pyrolysis

Zhenghao YANG1(), Zhen HE1, Yulong CHANG1,2,3, Ziheng JIN1,2, Xia JIANG1,2()   

  1. 1.College of Architecture & Environment, Sichuan University, Chengdu 610065, Sichuan, China
    2.College of Carbon Neutrality Future Technology, Sichuan University, Chengdu 610065, Sichuan, China
    3.Tianfu Yongxing Laboratory, Chengdu 610213, Sichuan, China
  • Received:2023-02-27 Revised:2023-06-09 Online:2023-07-27 Published:2023-06-05
  • Contact: Xia JIANG

生物质快速热解下行式流化床反应器研究进展

杨峥豪1(), 何臻1, 常玉龙1,2,3, 靳紫恒1,2, 江霞1,2()   

  1. 1.四川大学建筑与环境学院,四川 成都 610065
    2.四川大学碳中和未来技术学院,四川 成都 610065
    3.天府永兴实验室,四川 成都 610213
  • 通讯作者: 江霞
  • 作者简介:杨峥豪(1998—),男,硕士研究生,645854663@qq.com
  • 基金资助:
    四川省科技厅重点研发项目(2023YFS0357);四川省科技创新基地(平台)和人才计划项目(2021ZYCD006)

Abstract:

Under the goal of carbon neutrality, the future development path is to change from the raw material system of fossil energy to the raw material system of renewable energy. As an important substitute for fossil resources, biomass is the only renewable carbon resource that can replace fossil resources on a large scale. Fast pyrolysis of biomass is an important way to convert biomass resources into liquid fuels, and its core technology is the reactor. The downer circulating fluidized bed reactor has the advantages of short product residence time and near-plug flow performance, and has broad application prospects in fast pyrolysis of biomass. In this paper, the characteristics of fluidized bed reactor and the research status of pilot and demonstration/commercial units are introduced. The characteristics, structure, classification and hydromechanical properties of downer reactor are summarized in detail, and the bottleneck problems in the process of downer reactor scale-up and the direction of further research are analyzed, which can provide reference for promoting the industrial application of downer reactor in fast pyrolysis of biomass.

Key words: biomass, pyrolysis, downer reactor, fluidized bed

摘要:

在碳中和目标下,未来发展之路是从化石能源的原料体系转变到可再生能源的原料体系。作为化石资源的重要替代品,生物质是唯一能够大规模取代化石资源的可再生碳资源。生物质快速热解技术是实现生物质资源转化为液体燃料的重要途经,其技术核心是反应器。下行式循环流化床反应器具有产物停留时间短、近平推流性能等优点,在生物质快速热解方面具有广阔的应用前景。本文介绍了流化床反应器的特点及其中试和示范/商业级装置的研究现状,详细总结了下行床反应器的特点、结构、分类及流体力学特性,并分析了目前下行床反应器放大过程中的瓶颈问题以及进一步研究的方向,为推动下行床反应器在生物质快速热解工业应用提供参考。

关键词: 生物质, 热解, 下行床反应器, 流化床

CLC Number: