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中文摘要：
烟杆热解多联产是烟杆高值化利用的重要选择之一。文中主要研究了烟杆热解转化过程中气液固产物的形成析出机制以及联产机制。研究发现随着热解温度的升高,气体产率直线增加,固体焦逐渐减少,液体油产率则在20%左右变化不大。在低温下,热解气主要为CO2和CO,随着温度的升高,CO、H2和CH4的量逐渐增大,且在700℃时CO高达35.65%,热解气热值也升高到12.53 MJ/m3,是较理想的气体燃料。液体油的组成较为复杂,其中吡啶类、酯类和一些酸类大分子有机物含量在低温下较高,而在高温下由于二次反应而使其含量降低,苯酚类和芳环类有机物均在高温下含量较高。随着温度的上升,焦炭中的有机官能团逐渐减少,在600℃后,烟杆基本热解完全。
英文摘要：
Pyrolytic polygeneration is an important high-value utilization choice of tobacco stalk.This paper tended to catch the formation and evolution mechanism of gas,liquid and solid products during pyrolytic conversion process of tobacco stalk.The results show that with the temperature increasing,gas production rate increases linearly,solid production rate gradually reduces and liquid oil yield changes slightly at about 20%.At low temperature（300 ℃）,the main components of pyrolysis gas are CO2 and CO.With the increase of the temperature,the yields of CO,H2 and CH4 gradually increase.The content of CO is up to 35.65% at 700 ℃,and the low heating value of pyrolysis gas reaches to 12.53 MJ/m3,which is a relatively ideal gas fuel.The composition of liquid oil is relatively complex,in which the content of pyridine,esters and some macromolecular organic acids are high at low temperature.Due to the secondary reaction,they all diminished at high temperature,while,the phenol and aromatic rings become the main part in bio-oil.The organic functional groups decrease gradually in char particles as pyrolysis temperature heated up.After temperature gets to 600 ℃,the tobacco stalk mainly pyrolysis completely.
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