竹屑热解过程及产物特征研究  

STUDY ON BAMBOO PYROLYSIS PROCESS AND PRODUCT CHARACTERISTICS

作　　者：杨华[1] 黄丽[1] 刘石彩[1] 侯敏[1] 孙康[1] 孙云娟[1] 

机构地区：[1]中国林业科学研究院林产化学工业研究所生物质化学利用国家工程实验室国家林业局林产化学工程重点开发实验室江苏省生物质能源与材料重点实验室,南京210042

出　　处：《太阳能学报》2017年第5期1431-1439,共9页Acta Energiae Solaris Sinica

基　　金：国家科技支撑计划(2012BAD30B03);浙江省省院合作项目(2013SY15);中央级公益性科研院所基本科研业务费专项(CAFINT2014K04)

摘　　要：以竹屑为原料,选择250~950℃温度范围,在小型固定床反应器上探究竹材热解过程及产物特征。研究发现:随着热解温度的升高,固体焦炭产率减小,气体产率规律与之相反,液体产率先增后减,且在450℃时达到最大(52.28%)。固体焦炭中化学官能团的种类随温度的升高逐渐减少,含量随之减小,650℃之后除苯环结构外,基本无其他官能团,说明竹屑热解主要发生在650℃之前。在较低温度下,热解油中以呋喃类、醛酮类、酚类等含氧化合物为主,气体产物中主要以CO、CO_2为主,当温度超过750℃后,热解油以萘、苊等多环芳烃为主要含量,由于挥发分的二次裂解加剧,使CO和H_2体积分数增大,CH_4比例随温度变化缓慢。The pyrolysis tests were performed on bamboo sawdust in a small fixed bed across a range of temperatures from 250 to 950 ℃ in order to explore the bamboo pyrolysis process and product characteristics. The study showed that the yield of solid char decreases but increasing gas yield, with the pyrolysis temperature increasing, the liquid yield at first increases and then decreases and reached a maximum yield of 52.28%. The types and content of chemical function groups in solid char gradually reduced with the increase of temperature and was rarely after 650 ℃. The changes of chemical function groups proved that bamboo pyrolysis occurred before 650 ℃. At low temperature, the compositions of pyrolysis oil were based on furan, aldehydes and ketons, phenols and other containing oxygen compounds, meanwhile gas products mainly consist of CO and CO2. When pyrolysis temperature was over 750 ℃, pyrolysis oil was principally compose of naphthalene, acenaphtbene and other polycyclic aromatic hydrocarbons. The proportion of CO and H2 increase due to intensifying of secondary reaction and the proportion of CH4 changed slowly with temperature.

关 键 词：竹屑 热解 产物特性 热解油 GC-MS分析 FTIR分析 GC分析 

分 类 号：TK16[动力工程及工程热物理—热能工程]