Environmental and Energy Systems Department, Korea Institute of Machinery and Materials, Daejeon, Korea.
J Air Waste Manag Assoc. 2013 Oct;63(10):1137-47. doi: 10.1080/10962247.2013.801373.
Automobile shredder residue (ASR) from end-of-life vehicles (ELVs) in Korea has commonly been disposed of in landfills. Due to the growing number of scrapped cars and the decreasing availability of landfill space, effective technology for reducing ASR is needed. However ASR is a complex mixture, and finding an appropriate treatment is not easy on account of the harmful compounds in ASR. Therefore, research continues to seek an effective treatment technology. However most studies have thus far been performed in the laboratory, whereas few commercial and pilot studies have been performed. This paper studies the pyrolysis and gasification-melting of ASR. The pyrolyis characteristics have been analyzed in a thermogravimetric analyzer (TGA), a Lindberg furnace, and a fixed-bed pyrolyzer to study the fundamental characteristics of ASR thermal conversion. As a pilot study, shaft-type gasification-melting was performed. High-temperature gasification-melting was performed in a 5000 kg/day pilot system. The gas yield and syngas (H2 and CO) concentration increase when the reaction temperature increases. Gas with a high calorific value of more than 16,800 kJ/m3 was produced in the pyrolyzer. From the gasification-melting process, syngas of CO (30-40%) and H2(10-15%) was produced, with 5% CH4 produced as well. Slag generation was 17% of the initial ASR, with 5.8% metal content and 4% fly ash. The concentration of CO decreases, whereas the H2, CO2, and CH4 concentrations increase with an increase in the equivalence ratio (ER). The emission levels of dioxin and air pollution compounds except nitrogen oxides (NO(x)) were shown to satisfy Korean regulations.
韩国报废车辆（ELV）的汽车破碎机残渣（ASR）通常被处置在垃圾填埋场。由于报废汽车数量的增加和垃圾填埋场空间的减少，需要有效的减少 ASR 的技术。然而，ASR 是一种复杂的混合物，由于 ASR 中的有害物质，找到合适的处理方法并不容易。因此，研究仍在继续寻找有效的处理技术。然而，迄今为止，大多数研究都是在实验室进行的，而很少有商业和试点研究。本文研究了 ASR 的热解和气化-熔融。通过热重分析仪（TGA）、林德伯格炉和固定床热解器分析了热解特性，以研究 ASR 热转化的基本特性。作为初步研究，进行了轴式气化-熔融。在 5000 公斤/天的试验系统中进行了高温气化-熔融。随着反应温度的升高，气体产率和合成气（H2 和 CO）浓度增加。热解器中产生了热值超过 16800kJ/m3 的高热值气体。从气化-熔融过程中，产生了 CO（30-40%）和 H2（10-15%）的合成气，同时还产生了 5%的 CH4。炉渣生成量为初始 ASR 的 17%，金属含量为 5.8%，飞灰含量为 4%。随着当量比（ER）的增加，CO 浓度降低，而 H2、CO2 和 CH4 浓度增加。除氮氧化物（NOx）外，二恶英和空气污染物（如一氧化碳、二氧化碳和甲烷）的排放水平符合韩国法规。
