摘要
为明确打叶风分后片烟中梗的主要来源,进一步提升叶梗分离质量和片烟纯净度,分析了不同尺寸片烟与所含烟梗质量间的关系,基于此设计了定向去梗工艺并开展了工艺验证。结果表明:①振动分选筛可较好地将打后片烟按尺寸进行分离,其中≥42 mm超大尺寸片烟(A+)的叶中含梗率和叶中含粗梗率最高,A+中烟梗质量占比是其片烟质量占比的3.5倍;25.40 mm筛网上的大片中烟梗质量占比可达56.34%,是叶中含梗率控制的重点;②大尺寸片烟质量与所含烟梗质量间的关系符合单指数衰减函数(ExpDec1)分布,≥25.4 mm的大尺寸片烟质量与总梗质量及长梗质量关系密切,且粗梗主要来源于超大尺寸片烟;③定向去梗工艺能够有针对性地去除大尺寸片烟中的烟梗,叶中含梗率和粗梗率分别由原工艺的1.64%和0.31%降低至0.98%和0.09%,尤其是粗梗率的降幅高达70.97%。因此,定向去梗环节可为打叶复烤片烟含梗率的精准控制及片烟纯净度的优化提供手段。
To investigate the source of stems in lamina after threshing and pneumatic separation,and to effectively separate stems from lamina and promote the purity of lamina,the relationship between lamina size and stem content in lamina was analyzed.A directional separation technology was designed based on the above relationship and validated by experiments.The results showed that:1)Vibration screen could effectively separate threshed lamina according to size.The lamina with size bigger than 42 mm(A+)had the highest stem content and the highest undesired stem content,the stem weight proportion was 3.5 times of lamina weight proportion in the A+class.The stem weight proportion in large lamina on the screen mesh of 25.4 mm reached 56.34%,which was the key control point for the stem content in lamina.2)The relationship between the weights of large lamina and stems was consistent with an ExpDec1 function.The weight of large lamina with size≥25.4 mm closely correlated to the total stem weight and long stem weight,and the undesired stems mainly came from the super large lamina(A+).3)The directional separation technology could separate stems from the large lamina effectively,the stem content in lamina was reduced from 1.64%to 0.98%,the undesired stem content decreased from 0.31%to 0.09%with a decrease percentage of 70.97%.Therefore,the directional stem separation technology provides a precise control of stem content in threshed and redried lamina and the promotion of lamina purity.
作者
梁淼
刘茂林
刘向真
李庆祥
牛洋洋
赵森森
张峻松
吴殿信
LIANG Miao;LIU Maolin;LIU Xiangzhen;LI Qingxiang;NIU Yangyang;ZHAO Sensen;ZHANG Junsong;WU Dianxin(School of Food and Biological Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;Technology Center,China Tobacco Henan Industrial Co.,Ltd.,Zhengzhou 450000,China)
出处
《烟草科技》
EI
CAS
CSCD
北大核心
2020年第5期77-82,共6页
Tobacco Science & Technology
基金
河南中烟工业有限责任公司科技项目“烟叶打叶复烤加工质量稳定性研究”(ZW2016006),“黄金叶品牌打叶复烤专线技术集成与应用”(ZW201801)。
关键词
打叶复烤
烟梗
片烟尺寸
叶中含梗率
Threshing and redrying
Tobacco stem
Lamina size
Stem content
