烟草科技2016，Vol.49Issue(11)：33-41,9.DOI:10.16135/j.issn1002-0861.2016.0166
钾盐对烟草燃烧热解特性的作用机制
Functional mechanism of potassium salts on combustion and pyrolysis of tobacco
摘要
Abstract
In order to investigate the functional mechanism of potassium salts on combustion and pyrolysis of tobacco, the influences of potassium citrate and potassium nitrate on the characteristics of combustion and pyrolysis of flue-cured tobacco were analyzed by synchronous thermal analyzer (STA), automated physisorption analyzer (APA), microscale combustion colorimeter (MCC) and real-time temperature-rising infrared spectrometer (RTR-IR). The results showed that: 1) Both potassium citrate and potassium nitrate had dual effects on the combustion and pyrolysis of tobacco, which were the acceleration of the degradation of tobacco’s biopolymers at low temperatures (230 ℃-360 ℃) and deceleration of the coke pyrolysis at high temperatures (370 ℃-550 ℃). 2) The addition of potassium salts reduced the total pore volume and specific surface area of the coke, thus improving the compactness of coke. 3) Potassium ion catalyzed the degradation of oxygen-containing organic functional groups (O—H, C—O and C O), while retarded the degradation of oxygen-free organic functional groups (C—H bond, C C bond and aromatic moieties). 4) The nitrate ion from potassium nitrate displayed an oxidation acceleration effect on the decomposition of C—H moiety in flue-cured tobacco.关键词
烟草/燃烧/热解/钾盐/作用机制Key words
Tobacco/Combustion/Pyrolysis/Potassium salt/Functional mechanism分类
轻工纺织引用本文复制引用
周顺,朱栋梁,佘世科,汪华,陈刚,王孝峰,宁敏,徐迎波,何庆,张亚平,杨滢,田忠,鲍穗..钾盐对烟草燃烧热解特性的作用机制[J].烟草科技,2016,49(11):33-41,9.基金项目
安徽中烟工业有限责任公司科技项目“烟草低温加热状态下烟气释放规律、物化特性及影响因素研究”（2015103）；“细支卷烟燃烧调控技术研究及产品开发”（2016118）。 （）
