Studies on pyrolysis and gasification of automobile shredder residue in China

Abstract

With increasing automobile ownerships in China, the number of end-of-life vehicles has also rapidly increased. However, the automobile shredder residue generated during the dismantling of end-of-life vehicles in China is not treated properly and has caused great resource waste and environmental problems. In this work, automobile shredder residue from a domestic end-of-life vehicles dismantling company was comprehensively studied through element analysis, combustion heat experiment, proximate analysis, and thermogravimetric analysis. The feasibility of using pyrolysis combined with gasification to treat and recycle automobile shredder residue was investigated. The produced gas, oil, and residue yield was measured and the correlation between their yield and the experimental temperature and ratio of air to automobile shredder residue feed was studied. It is found that when ratio of air and experimental temperature are 1.5 mol kg(-1) and 900 °C, respectively, the heat energy of the gas produced per kilogram treated automobile shredder residue reaches a maximum value of 11.28 MJ. The characteristics of pyrolysis oil and solid residue were studied. The solid residue takes up 4.65%~5.57% of the original end-of-life vehicles weight. This greatly helps to reach the target of a 95% recycling rate.

Application of pyrolysis in dealing with end-of-life vehicular products: a case study on car bumpers

“…Metal components still exist in char after the pyrolysis of ASR (Galvagno et al, 2001;Ni and Chen, 2014). The results obtained are relevant to the heavy metals released (ppm) during the leaching tests conducted on char at different temperatures.…”

Influence of Interactions among Polymeric Components of Automobile Shredder Residue on the Pyrolysis Temperature and Characterization of Pyrolytic Products

“…In particular, pyrolysis oil and gas can be used as renewable alternative energy resources. High calorific value syngas (H 2 , CO and CH 4 ) and bio-oil produced by ASR pyrolysis can be used for energy recovery [ 11 , 20 ]. Additionally, metal components in pyrolytic solid products can be recycled, where carbides can be used as fuel and inorganic materials in the production of building materials [ 21 ].…”

Recycling Polyurethane Materials to Improve Properties of Wood Composite Panels

“…In China, about 6 million vehicles reach the end of their service lives annually, generating automobile shredder residue (ASR) of 9 million tons. 12-16% of the ASR wastes are PU foam materials [1]. A Chinese professional standard (SB/T 11160-2016) "Technical Specification for Crushing of Waste Vehicles" was released in the year of 2016.…”