Investigation progress on the interaction between coal and biomass during co-pyrolysis

doi:10.16085/j.issn.1000-6613.2020-1725

Abstract

Abstract:

Co-pyrolysis of coal and biomass is an important way to achieve efficient and clean utilization of coal. Co-pyrolysis can alleviate the pollution caused by coal pyrolysis and limit the disadvantages of low energy density and unbalanced seasonal supply during individual utilization of biomass, so that both of the efficiency of coal conversion and the oil quality are improved. This article reviews recent researches on co-pyrolysis of coal and biomass from the aspects of influencing factors, research methods and the interaction of components during co-pyrolysis process. The effects of biomass types, pyrolysis process parameters and pyrolysis reactor types on the co-pyrolysis process of coal and biomass are summarized, while the interaction between coal and biomass and the catalysis of alkali in volatile matter are also pointed out. Furthermore, development directions to further understand the interaction mechanism between coal and biomass, and improve the efficiency of co-pyrolysis are discussed.

Key words: coal, biomass, co-pyrolysis, interaction

摘要：

煤炭与生物质共热解是实现煤炭高效清洁利用的重要途径之一。共热解可改善煤炭单独热解产生的污染问题和生物质单独利用时能源密度低、季节性供应不平衡的问题，不仅能提高煤炭转化效率，还能获得更高品质油品。本文从煤与生物质共热解的影响因素、研究方法和共热解过程中组分间相互作用等方面出发，对近期国内外煤与生物质共热解的研究进行综述。总结了生物质种类、热解工艺参数和热解反应器的类型对煤与生物质共热解过程的影响规律以及煤与生物质在共热解过程中的相互作用过程，即半焦与挥发分间的相互作用、挥发分间的相互作用、生物质中碱金属对共热解的催化作用，并针对如何进一步认识煤与生物质相互作用机理、提高共热解效率等问题和发展方向作了展望。

关键词: 煤, 生物质, 共热解, 相互作用

CLC Number:

TQ536.9

ZHANG Yujie, WANG Jiaofei, BAI Yonghui, SONG Xudong, SU Weiguang, YU Guangsuo. Investigation progress on the interaction between coal and biomass during co-pyrolysis[J]. Chemical Industry and Engineering Progress, 2021, 40(7): 3693-3702.

张玉洁, 王焦飞, 白永辉, 宋旭东, 苏暐光, 于广锁. 共热解过程中煤与生物质相互作用的研究进展[J]. 化工进展, 2021, 40(7): 3693-3702.

Figures/Tables 6

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