6-2-3 縦型沈降分離装置を用いたプラスチックの回収率向上

抄録

It was necessary to improve the sorting performance and decrease the energy consumption, install small space of sorting device in mechanical recycling system using waste plastics. It was known that a sink float separation tank was designed taking several conditions into consideration for example shape of tank, flow rate of the fluid and the angle of the nozzle to the tank. Fluid simulation was carried out for the shape of tank before the experiment. The flow rates and the Reynolds number (Re) were considered during the simulation analysis. In this study, wet sorting system on waste plastics by vertical tank was designed on three dimensional computer-aided design (3D-CAD) and a test apparatus was made by a three dimensional printer. A spiral dashboard was installed in the cylinder. The experimental results showed that in the case of spiral angle 20-30 degree, recovery rate was highest 90% as Re were calculated on 2000 to 3000. It was concluded that an improved vertical tank indicates the high performance separate higher than 80%.