烟草科技2017，Vol.50Issue(5)：38-44,7.DOI:10.16135/j.issn1002-0861.2016.0507
不同结构烟草纤维素的燃烧热解特性
Combustion and pyrolysis characteristics of tobacco celluloses with different structures
摘要
Abstract
In order to study the combustion and pyrolysis characteristics of tobacco celluloses with different structures, the celluloses were extracted from flue-cured tobacco, burley tobacco, oriental tobacco and tobacco stem, and their crystal structures were characterized. The combustion behavior and pyrolysis process of different types of tobacco celluloses were comparatively studied with thermogravimetric (TG) analyser and micro combustion calorimeter (MCC). The composition of pyrolysis products and the releasing behaviors of carbonyl compounds were measured by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and an off-line pyrolysis furnace. The results showed that: 1) The cellulose structure of the different types of tobacco differed significantly, the cellulose of oriental tobacco had higher crystallinity, secondary fiber content, larger accessible fibril surface and fibril size. 2) The flammability of oriental tobacco cellulose was poor, its thermal stability was the worst at low temperatures (<350 ℃), however its carbon residue was the highest at high temperatures. 3) Tobacco stem cellulose produced more small molecular compounds, and the release of carbonyl compounds from oriental tobacco cellulose was slightly different with the other three tobacco celluloses. The structure differences of tobacco celluloses resulted in different combustion and pyrolysis characteristics.关键词
烟草纤维素/烤烟/白肋烟/香料烟/烟梗/结构/燃烧/热解产物Key words
Tobacco cellulose/Flue-cured tobacco/Burley tobacco/Oriental tobacco/Tobacco stem/Structure/Combustion/Pyrolysis product分类
轻工纺织引用本文复制引用
杨滢,何庆,张亚平,周顺,王孝峰,杨俊,张晓宇,田振峰,葛少林,杨莫愁,徐迎波..不同结构烟草纤维素的燃烧热解特性[J].烟草科技,2017,50(5):38-44,7.基金项目
安徽中烟工业有限责任公司-中国科学技术大学联合实验室科技项目"纤维素微观结构表征与热解特性研究"(20160828). （20160828）
