Chemical and Environmental Engineering Department, School of Engineering of Bilbao, Alameda Urquijo s/n, 48013 Bilbao, Spain.
Waste Manag. 2012 May;32(5):826-32. doi: 10.1016/j.wasman.2011.06.016. Epub 2011 Jul 26.
Pyrolysis may be an alternative for the reclamation of rejected streams of waste from sorting plants where packing and packaging plastic waste is separated and classified. These rejected streams consist of many different materials (e.g., polyethylene (PE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyethylene terephthalate (PET), acrylonitrile butadiene styrene (ABS), aluminum, tetra-brik, and film) for which an attempt at complete separation is not technically possible or economically viable, and they are typically sent to landfills or incinerators. For this study, a simulated plastic mixture and a real waste sample from a sorting plant were pyrolyzed using a non-stirred semi-batch reactor. Red mud, a byproduct of the aluminum industry, was used as a catalyst. Despite the fact that the samples had a similar volume of material, there were noteworthy differences in the pyrolysis yields. The real waste sample resulted, after pyrolysis, in higher gas and solid yields and consequently produced less liquid. There were also significant differences noted in the compositions of the compared pyrolysis products.
热解可能是一种替代方法，可以对分拣厂废弃物流的回收进行再利用，这些废弃物流是在分拣和分类过程中分离和分类出来的包装和包装塑料废物。这些废弃物流由许多不同的材料组成（例如，聚乙烯（PE）、聚丙烯（PP）、聚苯乙烯（PS）、聚氯乙烯（PVC）、聚对苯二甲酸乙二醇酯（PET）、丙烯腈-丁二烯-苯乙烯（ABS）、铝、 tetra-brik 和薄膜），完全分离在技术上是不可能的，或者在经济上是不可行的，通常它们被送到垃圾填埋场或焚烧炉。在这项研究中，使用非搅拌半分批反应器对模拟的塑料混合物和来自分拣厂的实际废物样品进行了热解。赤泥，铝工业的副产品，被用作催化剂。尽管两个样品的材料体积相似，但热解产率有显著差异。实际废物样品在热解后产生了更高的气体和固体产率，因此产生的液体更少。比较热解产物的组成也有显著差异。
