首页> 外文会议>International Conference on Electrical Sciences and Technologies in Maghreb >Technico-economic comparison between two new triboelectric charging processes of insulating granular products and their application to the electrostatic separation of WEEE Comparaison technico-économique entre deux nouveaux procédés de chargement triboéle
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Technico-economic comparison between two new triboelectric charging processes of insulating granular products and their application to the electrostatic separation of WEEE Comparaison technico-économique entre deux nouveaux procédés de chargement triboéle

机译:两种新的绝缘颗粒产品摩擦带电过程的技术经济比较及其在WEEE静电分离中的应用两种新型摩擦带电过程的技术经济比较

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摘要

It seems important to point out that the combination of triboelectric charging and electrostatic separation techniques is one of the best alternatives for the recycling of waste electrical and electronic equipment (WEEE). Our job is to evaluate and study two new tribo-charging devices to isolate particles from products to be recycled; the first device consists of a PMMA cylinder in which one or more coaxial propellers drive the plastic pellets in a helical motion which promotes their triboelectric charging; the second device is arranged on two parallel axes of rotation, in the same cylinder, to create two descending helical aerodynamic movements, either in the same direction or in opposite directions, and thus to cause a large number of collisions between insulating granules , which will charge by triboelectric effect. The experimental design methodology was used for the modelling and optimization of two charging processes for electrostatic separation application using a treadmill separator where the products used are mainly: PA, PC, HIPS, ABS and PVC. The effectiveness of the device was evaluated by experiments carried out with mixtures of three different plastics, on an electrostatic separator with a metal conveyor. The feasibility of the separation is related to the nature of the walls of the tribo-aero electric charging device, but is not significantly influenced by the mass flow.
机译:需要指出的是,摩擦带电和静电分离技术的结合是废弃电气电子设备(WEEE)回收的最佳替代方法之一。我们的工作是评估和研究两个新的摩擦带电装置,以从要回收的产品中分离出颗粒。第一个设备由一个PMMA圆柱体组成,其中一个或多个同轴螺旋桨以螺旋运动方式驱动塑料粒料,从而促进它们的摩擦带电。第二个装置布置在同一圆柱体上的两个平行旋转轴上,以沿相同方向或相反方向产生两个下降的螺旋空气动力学运动,从而在绝缘颗粒之间引起大量碰撞,这将导致通过摩擦电效应充电。实验设计方法用于通过跑步机隔板进行静电分离应用的两种充电过程的建模和优化,其中所使用的产品主要是:PA,PC,HIPS,ABS和PVC。在带有金属传送带的静电分离器上,通过对三种不同塑料的混合物进行的实验,评估了该设备的有效性。分离的可行性与摩擦航空充电装置的壁的性质有关,但不受质量流量的显着影响。

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