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Improvement of the recycling of plastics in lightweight packaging treatment plants by a process control concept

机译:通过过程控制概念改善轻型包装处理厂中塑料的回收利用

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摘要

In Germany, only approximately 30% by mass of plastics from lightweight packaging waste is recycled; 65% by mass is transferred to inferior residual fractions (sorting residue and mixed plastics), which are currently only utilized thermally. An increase in the recycling of valuable resources in the sense of material recycling would both contribute to the saving of resources and improve the economic situation of plant operators. It is generally known from operating and planning experience that fluctuation in the amount of material loaded into the sorting process is one of the main reasons for suboptimal recycling quotas. In particular, overfilling in the input stream leads to a deterioration of the separation result of the entire process. A novel process control concept envisages equalizing the material flow in such a way that all separation steps are operated in the intended design range. For the example of a lightweight packaging treatment process, the requirements and technological solutions for a sensor-based process control concept will be presented.
机译:在德国,仅回收了约30%的轻质包装废料中的塑料。 65%的质量被转移到次要的残留部分(分类残留物和混合的塑料)中,目前仅将其热利用。从材料循环利用的角度来看,增加宝贵资源的循环利用将有助于节省资源并改善工厂经营者的经济状况。从操作和计划经验中通常可以了解到,装入分拣过程的物料量的波动是回收配额不理想的主要原因之一。特别地,输入流中的过量填充导致整个过程的分离结果的恶化。一种新颖的过程控制概念设想以以下方式均衡物料流:所有分离步骤均在预期的设计范围内进行。对于轻量级包装处理过程的示例,将提出基于传感器的过程控制概念的要求和技术解决方案。

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