废PET塑料资源化代谢结构与代谢效率的研究

发布时间：2018-03-08 22:22

本文选题：PET　切入点：网络分析　出处：《北京林业大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文选定PET为研究对象,基于其产品及再生产品的相关国家标准和相关PET性质的文献,建立产品分类关系网和产品指标体系。并在物质流分析和网络分析的基础上建立PET代谢结构和代谢效率的评价体系。结合案例地点PET回收再利用情况及相关工厂、企业、家庭作坊的数据收集和PET产品采样,应用评价方法对案例地点PET产品代谢结构进行定量化计算。通过测试样品的特征指标,定量化产品代谢效率。在此基础上分析案例地点PET代谢特征并针对关键环节制定网络优化方案。通过对案例地点PET代谢结构和代谢效率的分析,代谢网络系统储存PET能力为0.60,有效材料代谢效率为0.66。主要影响在于非包装容器用PET材料回收率不足20%。代谢网络中主要贡献组分集中在社会回收PET产品中,再生产品没有表现出良好的贡献能力,导致网络结构简单,代谢路径短。产品代谢效率较低,一级代谢对有效材料吸收率低,原因是下游代谢产品品质低,系统损失大量的有效材料。通过优化回收产品分级及添加品质较高的再生产品,系统储存PET能力大幅提高及网络PET有效材料代谢效率得到提升。一级代谢及下游代谢路径的代谢效率都有所提高。建议构建回收分级政策,并增加高品质非容器PET产品的回收量。通过技术水平的提升,生产高品质再生PET产品并丰富再生产品种类,提高系统对有效PET材料的代谢效率,全面达到资源有效利用,实现循环经济的政策和可持续发展的战略部署。
[Abstract]:In this paper, PET is selected as the research object, based on the relevant national standards and related PET properties of its products and recycled products, Establish the product classification relation network and product index system, and establish the evaluation system of PET metabolic structure and metabolic efficiency on the basis of material flow analysis and network analysis. The data collection and PET product sampling of family workshop were used to quantitatively calculate the metabolic structure of PET products in the case site. The characteristic indexes of the samples were tested. Quantitative product metabolic efficiency. Based on the analysis of metabolic characteristics of PET in case sites and network optimization scheme for key links, the metabolic structure and metabolic efficiency of PET in case sites are analyzed. The metabolic network system is capable of storing PET 0.60 and the metabolic efficiency of effective materials is 0.66.The main effect is that the recovery rate of PET used in unpackaged containers is less than 20%. The main contribution components of the metabolic network are concentrated in the social recovery of PET products. The regenerated products did not show good contribution ability, which resulted in simple network structure, short metabolic path, low metabolic efficiency and low absorptivity of primary metabolism to effective materials, which resulted from the low quality of downstream metabolized products. The system loses a large number of effective materials. By optimizing the grading of recycled products and adding high quality recycled products, The ability of system to store PET is greatly improved, and the metabolic efficiency of effective material of PET network is improved. The metabolic efficiency of primary metabolism and downstream metabolic pathway are improved. It is suggested that a recovery classification policy should be established. Through the improvement of technology level, the high quality regenerated PET products are produced and the kinds of regenerated products are enriched, so as to improve the metabolic efficiency of the system to the effective PET materials, so as to achieve the effective utilization of the resources in an all-round way, and increase the recovery amount of the high quality non-container PET products. The policy of realizing circular economy and the strategic plan of sustainable development.
【学位授予单位】：北京林业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：F713.2

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