• 제목/요약/키워드: Plastic waste

검색결과 397건 처리시간 0.022초

Dry Separation of PVC Film from Plastic Film Mixture by Using Air Table

  • Song, Young-Jun;Hiroki Yotsumoto;Lee, Gye-Seung
    • 자원리싸이클링
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    • 제11권1호
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    • pp.37-42
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    • 2002
  • This study was conducted in order to remove Poly vinyl chloride(PVC) from the waste plastic film mixture. The fittings of Air Table was modified to increase the separation efficiency of PVC and PE(poly ethylene). PE and PVC was successfully separated from PVC-PE film mixture with the yield of PE 90% or more and with his grade of 99% or more, using the improved Air Table. The details of the separation condition and results will be discussed in this paper. Dry separation, Waste plastic film, PVC, Air Table. The details of the separation condition and results will be discussed in this paper.

폐비닐을 이용(利用)한 재생원료화(再生原料化) 기술(技術) (Feedstock Recycling Technologies using Waste Vinyls)

  • 정수현;나정걸;김상국;우희명;김영태
    • 자원리싸이클링
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    • 제22권4호
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    • pp.46-54
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    • 2013
  • 국내에서 발생하는 폐플라스틱의 양은 폐비닐류를 포함하여 연간 500만톤에 이르며 이 가운데 재활용 선별장을 통하여 배출되는 폐비닐류의 양은 연간 100만톤 정도에 이르는 것으로 추정되고 있다. 재활용 선별장의 폐비닐류는 RPF(Refuse Plastic Fuel) 또는 재생원료로 전환되어 재활용이 이루어지고 있다. 본 연구에서는 재활용 선별장에서 발생하는 폐비닐을 열매체 가열공정에 의하여 용융처리하여 재생 폐비닐 원료로서 이용가능성을 인장강도를 통하여 분석하고 기존의 재생품과 비교함으로서 용융재생원료의 이용 가능성을 판단하였다. 상업용으로 사용하기 위해서는 폐비닐류를 이용한 재생원료의 인장강도는 100 $kgf/cm^2$ 정도가 적합함을 알 수 있었다.

Triboelectrostatic Separation of PVC Materials from Mixed Plastics for Waste Plastic Recycling

  • Lee, Jae-Keun;Shin, Jin-Hyouk;Ku, Jae-Hyun;Kim, Doo-Hyun;Cho, Jae-Min;Hwang, Yu-Jin
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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    • pp.597-601
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    • 2001
  • Waste plastics amount is more than 3.5 million tons and 30% of industrial waste in 1998, Korea but recycling rate of industrial waste plastics is quite low because the material separation technology from the mixed waste plastic powders is not commercially available so far. This study covers the triboelectrostatic separation of polyvinylchloride (PVC) materials collection chambers and controllers. PVC and PET powders can be imparted negative and positive surface charges, respectively, due to the difference of triboelectric charging series between particles and particles in the fluidized bed tribocharger, and can be separated by passing them through an external electric field. The extract content and yield of PVC separation from the mixed PVC and PET plastic powders are 90.0% and 98.2%, respectively. The electrostatic separation system using the fluidized bed tribocharger shows the potential to be an effective method for removing PVC materials from other mixed plastics.

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폐기프라스틱의 재활용에 관한 연구 (A Study on Reclamation of Waste Plastic: Plant Design)

  • 김용욱;차시환
    • 한국안전학회지
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    • 제3권1호
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    • pp.37-45
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    • 1988
  • This research investigated the condition for plant design on reclamation of waste plastic by heat decomposition. The results were summarized as follows 1. The highest of oil product by heat decomposition is about 54.7%. 2. The optimum reaction temperature is about 300­40$0^{\circ}C$. 3. The optimum reaction time is 2­3 hours. 4. When the flow rate of 8­16 cm/sec in column reactor the yield is maximum. 5. Waste plastics yielded of carbon black product by heat decomposition at the optimum condition is about 23.5%. 6. Calorific values 0:1 were 9820 Kcal/kg.

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A Simple Distillation Process Produce Fuel from Plastic Waste using Incorporate Heat Source

  • Thawichsri, Kosart;nilnont, Wanich
    • International journal of advanced smart convergence
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    • 제4권1호
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    • pp.127-136
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    • 2015
  • This paper is a study of a simple distillation process. Its objective is to compare fuel production from plastic waste, its data collecting is from the factory and simple data calculated a suitable evaluation on the simple distillation plant built before calculation. The experiment with a simple distillation process is separated into three sections. The first section is a simple distillation process of distillation producing diesel using heat source by biomass. The second section is distillation process which produces fuel using heat source by burner. The third section uses heat source by burner incorporate with biomass. The experiment reveals that the result of the second section is the most efficient. In comparison with the experiments and the simple calculation, the result on the efficiency of work has error less than 5% and it is sufficient for the next experimental process. Thus, the study and design on a simple distillation process produces fuel from plastic waste has to concern mainly on design heat exchangers, flow rate and optimized temperature. Further study on this plant can be developed throughout the county due to its low cost and efficiency.

폐플라스틱 필름의 액상 열분해 특성에 관한 연구 (Liquid-phase Thermal Degradation Properties of Waste Plastic Film)

  • 황택성;김영수;강태원;황의환
    • 한국자원리싸이클링학회:학술대회논문집
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    • 한국자원리싸이클링학회 2003년도 추계정기총회 및 국제심포지엄
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    • pp.116-121
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    • 2003
  • In this study, the thermal degradation process has been investigated at various reaction temperature$(350{\sim}400^{\circ}C)$ and times$(30{\sim}120\;min)$ in order to recycle waste plastic films as solid state wax. Waste plastic films were easily melted by adding a small amount of waxes. The effects of wax addition and nitrogen flow rate on their thermal degradation properties were investigated. FT-IR, GPC and viscometer were used to analyze properties of the solid wax including the structure, molicular weight distribution and melt viscosity. The average molecular weight of solid wax was decreased with increasing the reaction time, temperature and amount of wax added, Also, the viscosity of solid wax decreased with increasing the stirring speed at a constant reaction temperature and time, and its viscosity got close to zero above $390^{\circ}C$.

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폐플라스틱/폐섬유소 복합체의 기계적 물성 (Mechanical Properties of Plastic Waste/Cellulose Waste Composites)

  • 홍영근
    • Elastomers and Composites
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    • 제38권1호
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    • pp.19-26
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    • 2003
  • 혼합폐플라스틱과 섬유소로서 폐신문지를 혼합하여 복합체를 구성하고 그 기계적인 물성을 조사하였다. 수지-수지 및 수지-섬유소 사이의 계면접착력을 증대시키고자 섬유소와 친화성을 가진 아비틱산을 소량 첨가하였다. 섬유소의 투입량이 많아질수록 인장강도는 플라스틱자체보다 저하되었으며 아비틱산은 강도에 좋은 영향을 주지 못하였다. 파단신장률 및 충격강도는 섬유소만의 투입량에 따라서는 감소하였으나, 섬유소가 적은 양이고 아비틱산이 적게 포함되어 있을 경우에 놀라운 상승을 나타내었다. 물성의 향상은 아비틱산의 화학적인 양면성에 기인한다고 여겨진다.

Municipal waste classification system design based on Faster-RCNN and YoloV4 mixed model

  • Liu, Gan;Lee, Sang-Hyun
    • International Journal of Advanced Culture Technology
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    • 제9권3호
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    • pp.305-314
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    • 2021
  • Currently, due to COVID-19, household waste has a lot of impact on the environment due to packaging of food delivery. In this paper, we design and implement Faster-RCNN, SSD, and YOLOv4 models for municipal waste detection and classification. The data set explores two types of plastics, which account for a large proportion of household waste, and the types of aluminum cans. To classify the plastic type and the aluminum can type, 1,083 aluminum can types and 1,003 plastic types were studied. In addition, in order to increase the accuracy, we compare and evaluate the loss value and the accuracy value for the detection of municipal waste classification using Faster-RCNN, SDD, and YoloV4 three models. As a final result of this paper, the average precision value of the SSD model is 99.99%, the average precision value of plastics is 97.65%, and the mAP value is 99.78%, which is the best result.

환경성 평가를 위한 폐플라스틱 재활용 방법들의 비교 (Comparison of Waste-Plastic Recycling Methods for Environmental Assessment)

  • 박찬혁;최석순
    • 유기물자원화
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    • 제14권2호
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    • pp.101-111
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    • 2006
  • 본 연구에서는 폐플라스틱의 재활용방법 (물질재활용, Refused Derived Fuel(RDF), 고로원료화 및 유화)에 대한 환경 영향을 분석하기 위하여 전과정평가(LCA)가 수행되었다. 이 연구에서는 6가지 환경영향 범주를 사용하였다. 폐플라스틱의 재활용방법 중 가장 큰 영향을 미치는 범주는 지구온난화로 나타났으며, 나머지들의 영향은 미비한 것으로 나타났다. 지구온난화의 영향을 살펴보면 물질재활용, RDF화 및 고로원료화에 대해서는 환경성이 음(-)의 값으로 나타났으며, 이러한 현상은 신재 플라스틱의 대체재로 사용함으로써 환경부하 삭감효과가 크기 때문인 것으로 밝혀졌다. 그러나, 유화는 양(+)의 값으로 나타나 환경부하가 증가하는 것으로 나타났으며, 이것은 사용량이 많은 전력의 생산과정에서 발생하는 $CO_2$가 주원인으로 밝혀졌다. 오존층파괴에 대한 영향은 유화방법이 환경부하가 크게 나타났으며, 이러한 현상은 유화 공정자체에서 발생되는 오존층파괴 물질에 의한 영향으로 판단되었다. 본 연구 결과들은 폐플라스틱 재활용을 향상시키는데 유용한 자료로 활용될 수 있음을 보여주었다.

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마찰하전형(摩擦荷電型) 정전선별(靜電選別)에 의한 폐플라스틱 맥주병 재질분리(材質分離)에 관한 연구(硏究) (A Study on Material Separation of Waste Plastics Beer Bottle by Triboelectrostatic Separation)

  • 전호석;;백상호;박철현;최우진
    • 자원리싸이클링
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    • 제17권1호
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    • pp.43-50
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    • 2008
  • 본 연구에서는 마찰하전형정전선별법을 적용하여 폐플라스틱 맥주병(PET, Nylon)의 재활용을 위한 재질분리 연구를 수행하였다. 하전재질 선정을 위한 하전특성 연구결과, PMMA가 폐플라스틱 맥주병(PET, Nylon)의 재질분리에 가장 효과적인 하전재질로 확인되어, PMMA를 사용한 pipe line와 cyclone 하전장치를 개발하였다. 본 연구에서 개발된 pipe line과cyclone 하전장치를 이용한 재질분리 실험결과, 최적 실험조건에서 PET의 품위와 회수율이 각각 99.6%와 88.2%인 결과를 얻어, 폐플라스틱 맥주병(PET, Nylon) 재활용을 위한 재질분리 기술을 확립하였다.