不同结晶度纤维素与1-丁基-3-甲基咪唑氯混合热解特性研究  

Study on the Mixed Pyrolysis Characteristics of Cellulose with Different Crystallinity and 1-Butyl-3-Methylimidazolium Chloride

作　　者：张涛 泮浩翔 吕为智 龚勋[2] ZHANG Tao;PAN Haoxiang;LüWeizhi;GONG Xun(Shanghai Power Equipment Research Institute Co.,Ltd.,Shanghai 200240,China;State Key Laboratory of Coal Combustion,School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China Collapse)

机构地区：[1]上海发电设备成套设计研究院有限责任公司,上海200240 [2]华中科技大学能源与动力工程学院,煤燃烧国家重点实验室,武汉430074

出　　处：《动力工程学报》2024年第2期196-202,共7页Journal of Chinese Society of Power Engineering

摘　　要：通过等体积浸湿的方法对不同结晶度的纤维素负载1-丁基-3-甲基咪唑氯([Bmim]Cl)离子液体,获得了负载离子液体的纤维素和再生纤维素样品,在固定床反应器上探究了不同结晶度纤维素负载离子液体的热解行为,并分别对其三态产物生物焦、生物油、生物气进行了分析。结果表明:纤维素再生过程会破坏内部晶体结构,使其无定形区域变大,脱水反应更加容易发生;热解温度为275℃时,与纤维素相比,结晶度更低的再生纤维素能够促进挥发物的生成以及抑制固体碳的生成,液体产率及固体产率分别从48.23%、48.81%变化至55.7%、37.67%,而热解温度在300~350℃的高温下却相反;负载离子液体后可以促进LGO等物质的生成,最高产率可达到16.1%,高结晶度能够促进离子液体对LGO的催化作用。By means of equal volume wetting,cellulose with different crystallinity was loaded with 1-butyl-3-methylimidazolium chloride([Bmim]Cl)ionic liquid,and cellulose and regenerated cellulose samples loaded with ionic liquids were obtained.The pyrolysis behavior of ionic liquid-loaded cellulose with different crystallinity was investigated in a fixed-bed reactor,and the three-phase products of biochar,biooil,and biogas were analyzed.Results show that the process of cellulose regeneration can destroy the internal crystal structure,making the amorphous region larger and making dehydration easier to occur.When the pyrolysis temperature is 275℃,compared with cellulose,the regenerated cellulose with lower crystallinity can promote the production of volatiles and inhibit the production of solid carbon,and the liquid yield and solid yield will change from 48.23%and 48.81%to 55.7%and 37.67%,respectively.However,at high temperature of 300-350℃,the opposite is true.Loading ionic liquid can promote the production of substances such as LGO,with a maximum yield of 16.1%.High crystallinity can promote the catalytic effect of ionic liquid on LGO.

关 键 词：混合热解 纤维素 离子液体 结晶度 

分 类 号：TK2[动力工程及工程热物理—动力机械及工程]