Evaluation and Analysis of Composition of Shredder Residue from End-of-life Vehicle

폐자동차 차피파쇄잔류물의 組咸에 대한 分析評價硏究

A research was performed to evaluate a use of shredder residue to currently dispose of at landfills. Laboratory analyses were conducted to determine especially the fuel characteristics of shredder residue. For this aim, shredder residue was classified by the particle size as well as by the type of material and the content of Cl, S, ash, and calorific value were determined. Due to the chlorinated plastic content of shredder residue, mean concentration of Cl was found to exceed 4wt% except one sample while that of S was ranged from 0.25 to 0.39 wt%. As far as calorific value was concemed, plastic was observed to be more than 10,000 kcal/kg while wood/paper and fiber accounted for approximately 4,000 kcal/kg. Shredder residue was found to contain varying trace amounts of metal elements, including Fe of 6∼8.5 wt%. Hg and Cr(VI) were not detected, however, while Cd was contained as small as 0.0004-0.0009 wt%.

현재 전량매립 처분되고 있는 차피파쇄잔류물(shredder residue)의 연료로써의 활용 가능성을 모색하기 위한 분석평가시험을 실시하였다. 수집한 차피파쇄잔류물을 입도별 및 재질별 선별작업을 통해 분류하고 이들 시료에 대한 Cl, S, 회분 및 발열량에 대한 화학분석을 실시하였다. 플라스틱에 함유된 PVC의 영향으로 대상시료 3종류 중 1 종류만을 제외하고는 시료의 평균 Cl 함량은 모두 4wt%를 상회하였다 반면, S 함량은 0.25∼0.39wt%로써 비교적 낮았다. 발열량의 경우 플라스틱이 10,000kcal/kg 이상으로 가장 높았으며, 나무/종이 및 섬유류가 4,000 kcal/kg 정도로써 가장 낮게 나타났다. 차피파쇄잔류물 중의 금속성분은 Fe 가 6∼8.5 wt%인 것을 제외하고는 모두 미량인 것으로 확인되었으며, 유독성 중금속인 Hg와 Cr(VI)은 검출이 되지 않았고, Cd은 0.0004∼0.0009wt%로 극미량이 검출되었다.