纤维素与木质素共热解对轻质产物形成的影响  

Effects of Co-pyrolysis of Cellulose and Lignin on Formation of Light Products

作　　者：杨华美 陈紫钦 李靖[1] 堵锡华[1] 王鹏[1] 刘云飞 杨萧意辞 YANG Huamei;CHEN Ziqin;LI Jing;DU Xihua;WANG Peng;LIU Yunfei;YANG Xiaoyici(School of Materials and Chemical Engineering,Xuzhou Institute of Technology,Xuzhou 221018,China)

机构地区：[1]徐州工程学院材料与化学工程学院,江苏徐州221018

出　　处：《徐州工程学院学报（自然科学版）》2022年第4期36-41,共6页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：江苏省自然科学基金项目(BK20190156)。

摘　　要：采用居里点裂解反应器进行纤维素、木质素及不同混比样品(30%、50%和70%)的热解实验,利用在线气相色谱对CO、CO_(2)和C_(1)~C_(5)烃等轻质产物产率进行了定量分析和理论预测.结果显示:两者共热解对轻质产物的形成存在明显的相互作用,能够有效促进CO、CO_(2)和C_(1)~C_(5)烃的形成,而共热解对残渣形成的影响与混合比例具有较强的相关性;木质素单独热解所得CO和CO_(2)产率(4.03%和1.07%)高于纤维素单独热解所得CO和CO_(2)产率(3.23%和0.67%),两者共热解有效促进了CO和CO_(2)的形成,且在纤维素与木质素等比例混合(50%cel)共热解时获得最高产率(4.63%和1.25%);C_(1)~C_(5)烃总产率则随纤维素质量分数的增加而不断降低.Pyrolysis experiments of cellulose, lignin and their mixing ratios(30%, 50% and 70%) were conducted using Curie-Point pyrolysis reactor, and yields of light products(CO, CO_(2)and C_(1)~C_(5)hydrocarbons) were quantified by online gas phase. Quantitative results and theoretical calculation show that there is an obvious interaction between the two co-pyrolysis on the formation of light products, which can effectively promote the formation of CO, CO_(2)and C_(1)~C_(5)hydrocarbons. The effect of co-pyrolysis on the formation of residue has a strong correlation with the mixing ratio. The yields of CO and CO_(2)(4.03% and 1.07%) obtained from lignin pyrolysis were higher than those obtained by cellulose pyrolysis(3.23% and 0.67%). The co-pyrolysis of lignin and cellulose effectively promoted the formation of CO and CO_(2), and the highest yields of CO and CO_(2)(4.63% and 1.25%) were obtained when cellulose and lignin were mixed in equal proportion(50% cel). The total yields of C_(1)~C_(5)hydrocarbons decreased with the increase of cellulose mass fraction.

关 键 词：纤维素 木质素 共热解 无机气体 C1~C5烃 

分 类 号：TK6[动力工程及工程热物理—生物能]