Department of Energy, Politecnico di Milano, Milan, Italy.
Waste Manag. 2010 Jan;30(1):145-53. doi: 10.1016/j.wasman.2009.06.009. Epub 2009 Oct 22.
Shredding is the common end-of-life treatment in Europe for dismantled car wrecks. It produces the so-called Automotive Shredded Residue (ASR), usually disposed of in landfill. This paper summarizes the outcome of a study carried out by Politecnico di Milano and LEAP with the support of Actelios SpA on the prospects of a technology based on sequential gasification and combustion of this specific waste stream. Its application to the treatment of ASR allows the recovery of large fractions of metals as non-oxidized, easily marketable secondary raw materials, the vitrification of most of the ash content and the production of power via a steam cycle. Results show that despite the unfavourable characteristics of ASR, the proposed technology can reach appealing energy performances. Three of four environmental impact indicators and the cumulative energy demand index are favourable, the main positive contributes being electricity production and metal recovery (mainly aluminium and copper). The only unfavourable indicator is the global warming index because, since most of the carbon in ASR comes from fossil sources, the carbon dioxide emissions at the stack of the thermal treatment plant are mainly non-renewable and, at the same time, the avoided biogas production from the alternative disposal route of landfilling is minor.
切碎是欧洲拆解汽车残骸的常见最终处理方法。它产生了所谓的汽车切碎残余物（ASR），通常被填埋处理。本文总结了米兰理工大学和 LEAP 在 Actelios SpA 的支持下进行的一项研究的结果，该研究探讨了一种基于该特定废物流的顺序气化和燃烧技术的前景。该技术应用于 ASR 的处理，可以回收大量未氧化的、易于销售的金属作为二次原料，将大部分灰分玻璃化，并通过蒸汽循环生产电力。结果表明，尽管 ASR 具有不利的特性，但所提出的技术可以达到有吸引力的能源性能。四个环境影响指标中的三个和累计能源需求指数都是有利的，主要的积极贡献是电力生产和金属回收（主要是铝和铜）。唯一不利的指标是全球变暖指数，因为 ASR 中的大部分碳来自化石资源，因此，热处理厂烟囱中的二氧化碳排放主要是非可再生的，同时，从替代处置方法填埋中避免的沼气生产也较小。
