造纸法再造烟叶提取率测定方法研究
发布时间:2019-08-25 来源: 幽默笑话 点击:
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摘要 [目的]探讨造纸法再造烟叶提取率的检测方法,以寻求适合实验室研究和生产线在线检测的操作方法。[方法]对比研究残渣称重法、极限提取法和提取液固含量計算法3种造纸法再造烟叶提取率的测定方法,在实验室条件下以及实际生产过程中的应用。[结果]提取液固含量计算法测定的提取率与残渣称重法和极限提取法测定的提取率之间差异不显著。残渣称重法不适用于生产线在线检测,极限提取法和提取液固含量计算法都适用于生产线在线检测,极限称重法检测过程较繁琐,提取液固含量计算法操作简单快捷。[结论]将提取液固含量计算法应用于造纸法再造烟叶实验室研究以及生产线在线检测中提取率的测定是可行的。
关键词 造纸法再造烟叶;烟梗;烟末;碎片;提取率
中图分类号 S572 文献标识码 A 文章编号 0517-6611(2016)32-0102-04
Determination Methods for Extraction Rate in Reconstituted Tobacco Made by Papermaking Process
XUE Dong, YUAN Yi-lai, YUAN Guang-xiang et al (Reconstituted Tobacco Research Instituted of China Tobacco Jiangsu Industrial Co.Ltd.,Huaian, Jiangsu 223002)
Abstract [Objective]To discuss the determination methods for extraction rate in reconstituted tobacco made by papermaking process, and to find suitable determination methods for laboratory research and online inspection.[Method] Three determination methods for extraction rate such as classic method of residue weighting, limit extraction method and algorithm for solid content of extracts were chosen, their application in laboratory and productive process was studied contrastively.[Result] The difference among the results of the three methods was small.Classic method of residue weighting was not suitable to be applied in online inspection.The other two methods were applicable to be used in online inspection.However, limit extraction method had accurate results but complicated inspection process, algorithm for solid content of extracts had less accurate results compared to limit extraction method but simple and effective inspection process.[Conclusion] It is practicable to apply algorithm for solid content of extracts in laboratory research and online inspection for extraction rate determination of reconstituted tobacco by papermaking process.
Key words Reconstituted tobacco by papermaking process; Tobacco stem; Tobacco scrap; Tobacco dust; Extraction rate
提取又稱萃取、浸取、浸提,是造纸法再造烟叶生产工艺中的关键环节,它决定了烟草原料中的不溶固形物和可溶物是否能够充分分离,对后续工艺会产生一系列的影响[1-3]。提取率高则得到的涂布液充足,有利于生产过程以及产品品质的调控;提取率高同时也提高了浆料的洁净程度,有利于基片的抄造以及基片物理性能的改善。造纸法再造烟叶的提取率测定普遍采用的经典计算方法,即残渣称重法[1-提取后残渣干物质重量/提取原料干物质重量)×100%],该方法需要将原料按批次进行处理,因此仅适用于实验室操作。造纸法再造烟叶生产线为连续生产,通常还采用了逆流提取的形式,上述经典计算方法并不适用,因此,寻找一种适用于生产线在线检测的提取率测定方法具有重大的意义。
施建在[4]、黄申元[5]设计了再造烟叶提取率检测的极限提取法,并对残渣称重法与极限提取法在实验室的应用效果进行了对比,但是对于实际生产中提取率检测方法的应用少有相关研究报道。
笔者根据造纸法再造烟叶提取工艺的特点,设计了一种全新的提取率测定方法——提取液固含量计算法。该方法操作简单快捷,检测结果重现性好,适用于造纸法再造烟叶实验室研究以及生产线在线检测中提取率的测定。
1 材料与方法
1.1 材料
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