生物质三组分二元混合热解特性研究  

Study on the pyrolysis characteristics of binary mixture of biomass three-component

作　　者：范洪刚[1,2,3] 赵丹丹 顾菁[1,2] 王亚琢 袁浩然[1,2,4,5] 陈勇 FAN Honggang;ZHAO Dandan;GU Jing;WANG Yazhuo;YUAN Haoran;CHEN Yong(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China;Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,Guangdong,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Energy,Xiamen University,Xiamen 361005,Fujian,China;School of Mechanical and Power Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]中国科学院广州能源研究所,广东广州510640 [2]南方海洋科学与工程广东省实验室(广州),广东广州511458 [3]中国科学院大学,北京100049 [4]厦门大学能源学院,福建厦门361005 [5]同济大学机械与能源工程学院,上海200092

出　　处：《化工学报》2021年第7期3788-3800,共13页CIESC Journal

基　　金：国家重点研发计划项目(2018YFC1901200);国家自然科学基金项目(51976223)。

摘　　要：采用TG-FTIR-MS研究了生物质三组分二元混合热解过程的失重特性和小分子气体逸出规律。结果表明二元混合组分热解过程降低了热解反应开始温度。纤维素与半纤维素混合热解过程热解反应受到抑制,热解失重率降低,H2、CH4和H2O产量减小,CO和CO2产量增加。木质素和半纤维素在混合热解过程中存在协同效应,促进热解反应进行,H2产量增加,然而其他小分子气体产物的生成被抑制,协同效应的效果更有利于可冷凝挥发分产物生成,这种效应随着半纤维素比例增大而减弱。半纤维素和纤维素在整个热解过程表现出相互抑制的效果,其小分子气体产物产量减小,但随着纤维素比例增大,影响减弱。TG-FTIR-MS was used to study the mass loss characteristics and the evolution of small molecule gas during the pyrolysis of binary mixtures,which were mixed by biomass three-component.The results showed that the initial pyrolysis temperature decreased in the co-pyrolysis process.During the co-pyrolysis of cellulose and hemicellulose,the pyrolysis reaction was inhibited and the mass loss rate was reduced.Additionally,the yield of H2,CH4 and H_(2)O decreased,while the yield of CO and CO_(2)increased.Synergistic effect was found in the co-pyrolysis of lignin and hemicellulose,which promoted the pyrolysis reaction process.For the volatile products,the formation of H_(2)O was promoted and its yield increased,however,the production of other small molecule gas products was inhibited.This synergistic effect was mainly conducive to the formation of condensable volatile products.Moreover,this effect decreased as the proportion of hemicellulose increased.The entire pyrolysis process of hemicellulose and cellulose exhibited mutual inhibition effects,and the production of small molecule gas products decreased,but the influence decreased with the increase of cellulose ratio.

关 键 词：生物质 纤维素 半纤维素 木质素 热解 二元混合物 协同效应 

分 类 号：X705[环境科学与工程—环境工程]