The recycle system of the discarded vehicles in Taiwan has promoted for many years, and around 70% of the discarded vehicles could be recycled by the recovery techniques. The remaining 30% is called ASR and it was very difficult to recycle. Recycling of ASR was driven by the material recovery, the thermal recovery and the energy recovery and the all most of ASR was treated by the incineration. Unfortunately, the ASR was rejected by the incinerator in recent years, because the incineration of ASR could cause the air pollution and damage the incineration. Therefore, it is a very important thing to develop the recovery technology for ASR. In this study, the several commercial technologies were proposed and assessed from the feasibility and the economic. Finally, the most feasible solution was presented to improve the recovery of the ASR and to reduce the amount of the ASR in Taiwan. These proposed technologies in this study have commercial operation factors and the wasted PU in the ASR was used as raw material in these factors. The results show the wasted PU could be recycled by these technologies. After the feasibility assessment, the cost-benefit analysis was also conducted by questionnaires and field visits. In economic and financial analysis, the soil conditioner derived from the sub-critical water treatment had the better profitability. If the market sales were considered, the hassock was better than the soil conditioner.

ASR, PU, Pyrolysis