纸铝塑复合包装材料的分离工艺研究

论文编号:BZ063  论文字数:15051.页数:31

摘   要
 纸/铝/塑复合包装材料是一种重要的复合包装材料，在日常生活中获得广泛应用，其中最成功和最经典的产品就是利乐包包装材料。利乐包以其方便携带和使用安全的特点，在生活中越来越多地被应用。利乐包的飞速发展也使得利乐包的资源回收受到了更多的重视。本文主要研究利乐包的回收工艺及回收工艺的影响因素，寻找更经济、更环保、更有效的方法。在综合考虑各种因素下，选择了硝酸溶解和水力浆的两种回收工艺对利乐包的各成分进行回收利用。
 硝酸溶解工艺主要从利乐包的块状大小、硝酸的浓度、搅拌的影响及液固比方面进行考察研究，测量利乐包中PE、铝、纸的回收比例。水力分解实验主要考察了利乐包的块状大小、湍流装置输出的能量及液固比等方面的影响因素，进行相应的比较，得出利乐包的最佳回收工艺。两种工艺都能充分有效地回收利乐包，对利乐包的资源回收有着重要的意义。

关键词：纸/铝/塑复合包装材料；利乐包；资源回收；硝酸；水力分解

Abstract
 The compound packing material of the paper/aluminum/plastic is a kind of important packing material which acquires extensively application in the daily life. Among them, the most successful and the most classical product is tetrapak packing material. The tetrapak is more and more applied owing its convenience with usage safety of characteristics. The development of tetrapak reveals the resources recovery of tetrapak is subjected to more values. This article mainly studied the recovery process of the tetrapak and impact factor of the recovery process and look for more economic, more environmental protection, more valid method. At comprehensive consider under various factor, choose nitric acid resolve and water power resolve of two kinds of recovery processes to recovery the tetrapak materials.
 The process of nitric acid resolve mainly study the influence of tetrapak piece form size, the density of nitric acid, mix blend of the influence and liquid/solid ratio, and measure the recovery rate of PE, aluminum, paper in the tetrapak. The process of water power resolve mainly investigate the influence of the size of tetrapak piece, swift flow device output''s energy and liquid/solid ratio, then carry on a homologous comparison, get the best recovery process of the tetrapak. Two kinds of processes all can well valid recovery tetrapak, have important meaning to the resources recovery of tetrapak.
 
Keyword: Paper/aluminum/plastic packaging material; Tetrapak; Resources recovery; Nitric acid; Water power resolve.
目   录

摘   要 I
Abstract II
第一章 课题背景 1
第二章 文献综述 3
2.1 纸/塑/铝复合包装材料 3
2.2复合包装材料的经典—利乐包 3
2.3利乐包的分离工艺 6
2.4 课题的提出及主要研究内容 8
第三章 实验部分 9
3.1硝酸溶解工艺实验 9
3.2 水力浆工艺实验 10
第四章 硝酸溶解工艺实验 12
4.1 利乐包材料结构 12
4.2 实验结果 12
第五章 水力浆工艺实验 20
5.1利乐包纸块大小对水力浆实验的影响 20
5.2 打碎时间对水力浆实验的影响 21
5.3 液固比对水力浆实验的影响 24
第六章 结论与展望 25
6.1 硝酸溶解分离工艺 25
6.2 水力浆分离工艺 26
6.3 硝酸溶解工艺和水力浆分离工艺的对比 26
6.4 展望 26
参考文献 27
致  谢 28