生物质与煤（共）热解/气化过程中挥发分-半焦交互作用研究与进展

doi:10.11949/0438-1157.20220827

化工学报 ›› 2022, Vol. 73 ›› Issue (11): 5186-5200.DOI: 10.11949/0438-1157.20220827

• 生物质与有机固废热化学转化专栏 • 上一篇下一篇

生物质与煤（共）热解/气化过程中挥发分-半焦交互作用研究与进展

马萌¹(), 白永辉¹(), 卫俊涛², 闫伦靖³, 吕鹏¹, 王焦飞¹, 宋旭东¹, 苏暐光¹, 于广锁¹^,⁴()

^1.宁夏大学省部共建煤炭高效利用与绿色化工国家重点实验室，化学化工学院，宁夏银川 750021
^2.南京林业大学材料科学与工程学院，江苏南京 210037
^3.太原理工大学省部共建煤基能源清洁高效利用国家重点实验室，山西太原 030024
^4.华东理工大学洁净煤技术研究所，上海 200237

收稿日期:2022-06-14 修回日期:2022-08-29 出版日期:2022-11-05 发布日期:2022-12-06
通讯作者: 白永辉,于广锁
作者简介:马萌（1994—），男，博士研究生，mameng1021@163.com
基金资助:
宁夏回族自治区优秀青年科学基金项目(2022AAC05016);国家自然科学基金项目(21968024);宁夏回族自治区重点研发计划项目(2019BEB04001)

Research and progress of volatile-char interaction during biomass and coal (co-)pyrolysis/gasification process

Meng MA¹(), Yonghui BAI¹(), Juntao WEI², Lunjing YAN³, Peng LYU¹, Jiaofei WANG¹, Xudong SONG¹, Weiguang SU¹, Guangsuo YU¹^,⁴()

^1.State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, Ningxia, China
^2.College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
^3.State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
^4.Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai 200237, China

Received:2022-06-14 Revised:2022-08-29 Online:2022-11-05 Published:2022-12-06
Contact: Yonghui BAI, Guangsuo YU

摘要/Abstract

摘要：

生物质和煤协同热化学转化是实现非化石能源和化石能源耦合高效利用的技术手段，对实现“双碳”目标具有重要现实意义。基于生物质等含碳燃料高挥发分组成和富氧特性，热化学转化过程不可避免地发生挥发分-半焦交互作用并影响原料性质和设备过程参数。综述了生物质与煤（共）热解/气化过程中挥发分-半焦交互作用的研究进展，总结了交互作用对挥发分的催化裂解规律、对半焦结构与性质的影响及生物质和煤协同热化学转化下的解耦研究思路三方面具体内容。针对目前挥发分-半焦交互作用机制解析过程所采用的研究方法及思路，提出了新的见解并对未来交互作用的重点研究方向进行了展望，以期为进一步认识交互作用的物理化学本质提供理论指导。

关键词: 生物质, 煤, 共热解, 共气化, 挥发分-半焦交互作用

Abstract:

The synergistic thermochemical conversion of biomass and coal is a technical means to realize the efficient coupling utilization of non-fossil energy and fossil energy, which has great practical significance to realize the goal of “Dual Carbon”. Due to the high volatile composition and oxygen-enriched characteristics of carbonaceous fuels such as biomass, the volatile-semi-coke interaction inevitably occurs in the thermochemical conversion process and affects the properties of raw materials and equipment process parameters. This article reviews the research progress of volatile-char interaction between biomass and coal during the (co-)pyrolysis/gasification process, and three specific contents of the volatile-char interaction on catalytic cracking of volatiles, the effect on char chemical structure and properties, and research approach of decoupling of synergetic thermochemical transformation are summarized. In view of the current research methods and thought used in the mechanism analysis of volatile-char interaction, some new insights were proposed and the future research directions of the interaction were prospected, so as to provide theoretical guidance for further understanding the physicochemical nature of the interaction.

Key words: biomass, coal, co-pyrolysis, co-gasification, volatile-char interaction

中图分类号:

TQ 530.2

马萌, 白永辉, 卫俊涛, 闫伦靖, 吕鹏, 王焦飞, 宋旭东, 苏暐光, 于广锁. 生物质与煤（共）热解/气化过程中挥发分-半焦交互作用研究与进展[J]. 化工学报, 2022, 73(11): 5186-5200.

Meng MA, Yonghui BAI, Juntao WEI, Lunjing YAN, Peng LYU, Jiaofei WANG, Xudong SONG, Weiguang SU, Guangsuo YU. Research and progress of volatile-char interaction during biomass and coal (co-)pyrolysis/gasification process[J]. CIESC Journal, 2022, 73(11): 5186-5200.

图/表 13

图1 含碳燃料热化学转化过程中挥发分-半焦的交互作用

Fig.1 The basic concept of volatile-char interactions on carbonaceous fuels thermochemical conversion processes

图2 生物质/煤半焦催化裂解挥发分实验样品排列示意图[22]

Fig.2 The schematic diagram of the arrangement of experimental samples[22]

图3 生物质半焦为催化剂时不同制焦温度对挥发分催化裂解产物分布和组成的影响[23]

Fig.3 Effect of different coking temperatures on the distribution and composition of volatile catalytic cracking products over biochar catalyst[23]

图4 800℃下H2O和CO2气氛生物质半焦催化重整生物焦油的裂解机理[38]

Fig.4 Heterogeneous reforming mechanism of biomass tar over biochar in the presence of H2O and CO2 at 800℃[38]

图5 热解半焦内AAEM元素残余百分含量[49]

Fig.5 Retention of AAEM species in pyrolysis biochar[49]

图6 交互反应中不同进料速率下褐煤焦的IGR/ID和I(GR+VL+VR)/ID值变化规律[59]

Fig.6 IGR/ID and I(GR+VL+VR)/ID values of lignite char under different feeding rates in the volatile-char interactions[59]

图7 实验方案设计简图[63]

Fig.7 Schematic diagram of experimental scheme design[63]

图8 催化重整模式下新鲜煤焦和反应后煤焦的CO2反应活性图[64]

Fig.8 CO2 reactivity of fresh and reacted coal char under catalytic reforming mode [64]

图9 交互作用下半焦失活原理示意图[50]

Fig.9 A schematic diagram of char inactivation principle under volatile-char interaction[50]

图10 (a) 丝网反应器; (b) 流化床/固定床反应器; (c) 褐煤在丝网反应器和流化床/固定床反应器热解过程中Na的挥发[46, 50]

Fig.10 Volatilisation of Na during the brown coal pyrolysis in a wire-mesh reactor and a fixed-bed/fluidised-bedreactor [46, 50]

图11 挥发分-半焦交互作用调控反应器示意图[76]

Fig.11 Schematic diagram of volatile-char interaction regulating reactor[76]

图12 雪松锯末热解一次挥发分和二次挥发分释放示意图[81]

Fig.12 Release diagrams of primary and secondary volatiles from cedar sawdust pyrolysis[81]

图13 热重坩埚结构设计示意图[83]

Fig.13 Schematic diagram of thermal crucible structure [83]

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生物质与煤（共）热解/气化过程中挥发分-半焦交互作用研究与进展

Research and progress of volatile-char interaction during biomass and coal (co-)pyrolysis/gasification process

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