[1]顾中铸,许爱琴,吕留根,等.烟丝干燥特性实验研究[J].南京师范大学学报(工程技术版),2007,07(01):032-36.
　Gu Zhongzhu,Xu Aiqin,Lu Liugen,et al.Experimental Investigations on the Drying Characteristics of Cut Tobacco[J].Journal of Nanjing Normal University(Engineering and Technology),2007,07(01):032-36.
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烟丝干燥特性实验研究
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
07卷
期数:
2007年01期
页码:
032-36
栏目:
出版日期:
2007-03-30

文章信息/Info

Title:
Experimental Investigations on the Drying Characteristics of Cut Tobacco
作者:
顾中铸1;  许爱琴1;  吕留根1;  蔡  崧2;  解 俊2
1. 南京师范大学动力工程学院, 江苏南京210042; 2. 东南大学能源与环境学院, 江苏南京210096
Author(s):
Gu Zhongzhu1; Xu Aiqin1; Lu Liugen1; Cai Song2; Xie Jun2
1.School of Power Engineering,Nanjing Normal University,Nanjing 210042,China;2.Department of Power Engineering,Southeast University,Nanjing 210096,China
关键词:
烟丝;  干燥特性;  香味;  填充力
Keywords:
cut tobacco;  dry ing charac teristics;  flavo r;  filling pow er
分类号:
TS44
摘要:
目前烟草热质传递过程的研究,均采用静态实验研究方法,得出的实验结果与生产实际有一定程度的偏差.针对这种情况,为了使研究结果更加贴近生产实际,模拟了烟丝在转筒内的热质交换规律,自行设计、安装、调试了一座实验台.在该实验台进行了烟丝干燥过程动态试验研究,重点考察了湿烟丝增温减湿条件下的热质迁移的规律,以及该过程对烟草填充力的影响.结果表明,烟丝干燥过程分为恒速和降速两个阶段,恒速阶段干燥速率主要取决于外部干燥条件,提高风温或风速可大大缩短干燥周期.因而在保证烟丝干燥质量的前提下,应该改善流动和传热条件,争取在恒速阶段就把烟丝干燥到工艺要求.烘丝方式、来料温度和水分、干燥介质状态参数等对烘后烟丝的填充力有显著影响.对于转筒式烘丝机,采用顺流烘丝方式,较高的来料温度和水分,较大的热风流速,可获得较高的烘丝填充力.
Abstract:
At present, the resea rches on the mass and heat transfer m echan ism o f cut tobacco a re in the static process. These exper im ent resu lts have a ce rtain deg ree of dev ia tion from the industrial practice. In response, w e de signed, insta lled and put up a dynam ic exper im enta l fac ility, so as to sim ulate industr ia l reality. A dynam ic exper i m en t of cut tobacco dry ing w as m ade on this facility. The m ass and heat transferm echan ism o f we t cut tobacco and the filling pow er changes in heating or hum id ifing processes w ere also researched. The research results show that the dry ing process includes constant ra te period and fa lling rate per iod. The dry ing rate corresponding to the constant stage depends on the dry ing cond itions. Increasing the tem perature o r ve loc ity of a ir flow greatly shorten the dry ing process. From the perspective of im prov ing tobacco’ s dry ing properties, it is suggested tha t the a ir flow and hea t transfer rate shou ld be increased in the constant rate period. The filling pow er o f dr ied cut tobacco is significantly in fluenced by dry ingm ethods, the temperature and m o isture content of entranc ing cu t tobacco and dry ing m edium con ditions. Fo r ro lling dryer, the h ighe r filling pow er va lue corresponds to dow nstream quick ly dry ing way, higher in le t tem perature and m o isture content.

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相似文献/References:

[1]顾中铸,张奕.烘丝过程烟丝中某些化学成分变化数值模拟[J].南京师范大学学报(工程技术版),2002,02(02):075.
　Gu Zhongzhu,Zhang Yi.Numerical Simulation for Some Chemical Changes of Cut Tobacoo in Drying Process[J].Journal of Nanjing Normal University(Engineering and Technology),2002,02(01):075.

备注/Memo

备注/Memo:
基金项目: 国家烟草专卖局基金( 981025)资助项目.
作者简介: 顾中铸( 1963-) , 教授, 博士, 主要从事烟气除尘与净化、燃烧理论与技术、多孔介质传热与传质以及卷烟加工工艺等方面的教学与研究. E-m ail:gu zhongzhu@ n jnu. edu. cn
更新日期/Last Update: 2013-04-29