ZnCl2催化生物质热解液化制呋喃类及醛类化学品研究  

Catalytic Pyrolysis of Biomass to Produce Specific High Value-added Furans and Aldehydes Chemicals

作　　者：李泊铮 毕冬梅[1] 李永军[1,2] 姜梅 LI Bozheng;BI Dongmei;LI Yongjun;JIANG Mei(School of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255000,China;Shandong Reseach Center of Engineering and Technology for Clean Energy,Zibo 255000,China)

机构地区：[1]山东理工大学农业工程与食品科学学院,山东淄博255000 [2]山东省清洁能源工程技术研究中心,山东淄博255000

出　　处：《林产化学与工业》2020年第2期117-124,共8页Chemistry and Industry of Forest Products

基　　金：国家重点研发计划资助项目(2019YFD1100600);国家自然科学基金资助项目(51536009,51406108)。

摘　　要：以油菜秸秆、玉米秸秆和樟木粉为原料,选择ZnCl2为催化剂,在水平管式炉反应器上热解液化,以所得生物油中呋喃类和醛类化学品组分产率,以及糠醛、多聚甲醛和5-甲基糠醛3种高附加值化学品的产率为指标,探讨不同反应条件对生物油中主要呋喃类和醛类组分分布及产率的影响。研究结果表明:无催化剂时,樟木粉热解所得生物油产率最高,达51.76%,当加入与生物质原料质量比为1∶1的ZnCl2催化剂时,3种原料热解所得生物油的产率均有所降低,其中樟木粉的生物油产率(30.50%)降低最为明显;玉米秸秆和樟木粉所得生物油中醛类组分的产率均有增加,产率分别为0.48%和0.84%。与未加入催化剂相比,油菜秸秆、玉米秸秆和樟木粉催化热解后所得生物油中呋喃类组分的产率增加明显,增长幅度分别为253.72%、85.05%和202.32%;糠醛的产率增长幅度分别为470.41%、313.87%和340.99%,5-甲基糠醛的产率增长幅度分别为318.18%、200.00%和213.04%;同时玉米秸杆催化热解所得生物油中多聚甲醛产率略有提升。Using rape straw,corn straw and camphor wood powder as raw materials,ZnCl2 was selected as a catalyst to carry out catalytic pyrolysis experiments in a horizontal tubular furnace reactor.The yields of the high value-added chemicals,e.g.furfural(FF),paraformaldehyde and 5-methylfurfural,in the bio-oil were taken as evaluation indexes.The results showed that the bio-oil yield of camphor wood powder was the highest,up to 51.76%,without catalyst.When ZnCl2 was the catalyst with a mass ratio of 1∶1 in the pyrolysis,the bio-oil yield of the three raw materials decreased.And the bio-oil yield of camphor wood powder(30.50%)decreased significantly.The yield of aldehydes in the bio-oil obtained from corn straw and camphor wood powder increased to 0.48%and 0.84%,respectively.After catalytic pyrolysis of rape straw,corn straw and camphor wood powder,the yield of furans in the bio-oil increased by 253.72%,85.05%,and 202.32%,respectively.The yield of FF in bio-oil increased by 470.41%,313.87%,and 340.99%,respectively.The yield of 5-methylfurfural increased by 318.18%,200.00%,and 213.04%,respectively.Meanwhile,the yield of paraformaldehyde in the bio-oil obtained from the catalytic pyrolysis of corn straw by ZnCl2 increased increased slightly.

关 键 词：生物质 快速热解 化学品 ZNCL2 糠醛(FF) 呋喃类 

分 类 号：TQ35[化学工程] TK6[动力工程及工程热物理—生物能]