H2020Индивидуална стипендия2015–2016

IMPRECSIM · Improving wet plastic recycling through innovative lagrangian particle-fluid simulations

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2015-06-01 → 2016-11-30
Финансиране от ЕС: 128 596 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Симулациите на движението на частици в течности помагат за по-доброто разделяне на различни видове пластмаси, като например PET и PVC. Това е важно, за да се повиши качеството на рециклираните материали и да се намали количеството отпадъци в сметищата.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Improving wet plastic recycling through innovative lagrangian particle-fluid simulations

With the beginning of the 20th century plastic has become a broadly used material and today modern life is unthinkable without it. Unfortunately its advantages such as its durability, light weight and low cost, also makes it problematic when it comes to its end of its life phase. Tens of millions of tons of plastic waste float in the world's oceans as broken debris. In addition, plastic is not inert, and chemical additives of which some are endocrine disrupting substances can migrate into body tissues or the food chain. The massive pollution of the oceans with plastic waste is therefore emerging as a global challenge that requires a global response. Currently a coherent strategy to optimize plastic waste policy is built up in the European Union. However, still nearly 50% of plastic waste in the EU is landfilled. Mechanical plastic recycling is currently one of the weakest points in the recycling system, because only a low percentage of plastic is reused compared to the amount of recovered metal, glass and waste paper. Recycling of wastes generally requires the separation of different materials. As the raw mixture of plastic waste usually includes various kinds of plastics (e.g. Acrylonitrile-butadiene-styrene (ABS), Polyethylene terephthalate (PET), Polystyrene (PS), Polyethylene (PE), Polypropylene (PP), Polyvinyl chloride (PVC)), the separation process should classify waste into a number of reclaimable plastic fractions, so as to meet the requirements for the purity and cleanliness of a polymer type that are needed in a high-quality plastic recycling process. The separation of different polymers by type is necessary because contamination in recycling of one type of plastic by another type can severely lower the quality of plastic products and cause serious processing problems. Wet particle separation is used widely in mineral processing as well as plastic recycling to separate mixtures of particulate materials into further usable fractions due to density differences. Despite its wide usage wet particle separation processes are often attributed to operational problems especially if density differences of the feed material are low. Objective of this project was to develop a numerical method with which the wet plastic particle separation process can be simulated and to apply the developed framework for modelling of a technical wet separation process.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Wet particle separation is used widely in mineral processing as well as plastic recycling to separate mixtures of particulate materials into further usable fractions due to density differences. Despite its wide usage wet particle separation processes are often attributed to operational problems especially if density differences of the feed material are low. A review of the state of the art clearly indicates that numerical modelling has not yet been applied to wet separation processes due to the lack of applicable numerical schemes. On this background numerical modelling can strongly contribute towards improving the design and process parameters of wet particle separation technologies especially in the field of plastic recycling - improvements have a strong environmental impact such as reduced landfill and lower overall pollution.The proposed research consists of two parts. The first objective is the development of a novel, fully Lagrangian particle-fluid modelling framework applicable to systems of particles of complex shape in a wet environment. For modelling the particles, the Discrete Element Method (DEM) will be employed. For the fluid part, the Lagrangian Smooth Particle Hydrodynamics (SPH) will be used which enables handling free surfaces and large movements of the fluid, inherently. While unresolved fluid flow around particles is already used in mesh based methods, coupling the DEM and SPH in one computational framework is a challenging task addressed in this project. Thereby, a framework is developed for representing technical scale systems of complex shaped particles in a wet environment for the first time. In the second part of the project, the developed framework will be applied to the modelling of a wet separation process involving a sink-float drum separator for plastic recycling. Both design and operational parameters will be optimized and results exchanged towards technology improvements with interested European companies from the recycling sector.

Оригинален текст от CORDIS (на английски).

Участници

RUHR-UNIVERSITAET BOCHUM · BochumКоординаторГермания