Research progress in preparation of liquid fuels and chemicals by microwave pyrolysis of biomass

doi:10.16085/j.issn.1000-6613.2020-1322

Abstract

Abstract:

Microwave pyrolysis is an efficient technology for biomass conversion and utilization, which has unique thermal and non-thermal effects and can transform biomass into liquid fuels and chemicals, effectively relieving energy pressure and reducing environmental pollution. This paper focused on the influence of biomass feedstock characteristics, microwave absorbers and catalysts on the preparation of high-quality liquid fuels and chemicals by microwave pyrolysis of biomass. The influence of raw material characteristics was discussed from three aspects: water content, ash content and H/C_eff of biomass and catalysts included metal salts, metal oxides, ZSM-5, microwave-driven catalysts and other catalysts, such as HY, MCM-41 and carbon-based catalysts. The pyrolysis characteristics, product composition and transformation mechanism of biomass were summarized. In addition, the existing problems such as complex pyrolysis mechanism, complex and unstable products, poor selectivity of target products, as well as easy coking, inactivation and poor repeatability of catalysts were analyzed, and the future development direction was prospected, so as to provide the basis for efficient conversion and utilization of biomass.

Key words: biomass, microwave pyrolysis, raw material characteristics, microwave absorber, catalyst

摘要：

微波热解是一种高效的生物质转化利用技术，具有独特的热效应和非热效应，可将生物质转化为液体燃料和化学品，能有效缓解能源压力，减少环境污染。本文着重探讨了生物质原料特性、微波吸收剂、催化剂对生物质微波热解制备高品质液体燃料和化学品的影响。原料特性的影响主要从生物质的水分含量、灰分含量和有效氢碳比三方面展开论述，催化剂包括金属盐、金属氧化物、ZSM-5、微波驱动型催化剂以及其他一些催化剂，如HY、MCM-41和碳基催化剂等。简述了生物质的微波热解特性、液体燃料的组成以及转化机理，并对现存的热解机理复杂、产物复杂不稳定、目标产物选择性差、催化剂易结焦失活、重复性差等问题进行了分析，展望了未来的发展方向，以期为生物质的高效转化利用提供依据。

关键词: 生物质, 微波热解, 原料特性, 微波吸收剂, 催化剂

CLC Number:

ZENG Yuan, WANG Yunpu, ZHANG Shumei, XIA Meiling, WU Qiuhao, LIU Yuhuan, RUAN Roger. Research progress in preparation of liquid fuels and chemicals by microwave pyrolysis of biomass[J]. Chemical Industry and Engineering Progress, 2021, 40(6): 3151-3162.

曾媛, 王允圃, 张淑梅, 夏美玲, 吴秋浩, 刘玉环, RUAN Roger. 生物质微波热解制备液体燃料和化学品的研究进展[J]. 化工进展, 2021, 40(6): 3151-3162.

Figures/Tables 1

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[11]	WANG Weitao, BAO Tingyu, JIANG Xulu, HE Zhenhong, WANG Kuan, YANG Yang, LIU Zhaotie. Oxidation of benzene to phenol over aldehyde-ketone resin based metal-free catalyst [J]. Chemical Industry and Engineering Progress, 2023, 42(9): 4706-4715.
[12]	GE Yafen, SUN Yu, XIAO Peng, LIU Qi, LIU Bo, SUN Chengying, GONG Yanjun. Research progress of zeolite for VOCs removal [J]. Chemical Industry and Engineering Progress, 2023, 42(9): 4716-4730.
[13]	WU Haibo, WANG Xilun, FANG Yanxiong, JI Hongbing. Progress of the development and application of 3D printing catalyst [J]. Chemical Industry and Engineering Progress, 2023, 42(8): 3956-3964.
[14]	XIANG Yang, HUANG Xun, WEI Zidong. Recent progresses in the activity and selectivity improvement of electrocatalytic organic synthesis [J]. Chemical Industry and Engineering Progress, 2023, 42(8): 4005-4014.
[15]	WANG Yaogang, HAN Zishan, GAO Jiachen, WANG Xinyu, LI Siqi, YANG Quanhong, WENG Zhe. Strategies for regulating product selectivity of copper-based catalysts in electrochemical CO₂ reduction [J]. Chemical Industry and Engineering Progress, 2023, 42(8): 4043-4057.