An Investigation on Thermal Recycling of Recycled Plastic Resin (Optical Analysis of Abrupt Heating Characteristics of a Micro Plastic-Resin Particle)

Yamakita, Ryuji; Ishino, Yuji; Ohiwa, Norio

doi:10.1299/kikaib.72.1060

Cited by 2 publications

(3 citation statements)

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“…3(a) ~ (d). To improve the accuracy and reproducibility of image processing and to solve the problem how to support surely a micro plastic resin particle, spherically reformed particles having a diameter of about 200 µm are used (3), (9) . An original rugged resin particle is first attached to a fine tungsten wire of 5 µm diameter and is heated to its melting point by radiation heat transfer from an incandescent Nichrome wire.…”

Section: Experimental Apparatus and Methodsmentioning

confidence: 99%

“…The possibility and availability of thermal recycling of waste plastic resin have been investigated (1) ~ (9) by proposing a twin-fueled industrial burner and by supplying plastic resin powder to the proposed burner as an auxiliary fuel. The preceding studies suggested the necessity of a series of fundamental investigations, such as high-speed microscopic observation of heating and burning processes of a micro plastic resin particle under abrupt heating.…”

Section: Introductionmentioning

confidence: 99%

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Microscopic Approaches to Decomposition and Burning Processes of a Micro Plastic Resin Particle under Abrupt Heating

Ohiwa

Ishino

Yamamoto

et al. 2008

JTST

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To elucidate the possibility and availability of thermal recycling of waste plastic resin from a basic and microscopic viewpoint, a series of abrupt heating processes of a spherical micro plastic particle having a diameter of about 200 µm is observed, when it is abruptly exposed to hot oxidizing combustion gas. Three ingenious devices are introduced and two typical plastic resins of polyethylene terephthalate and polyethylene are used. In this paper the dependency of internal and external appearances of residual plastic embers on the heating time and the ingredients of plastic resins is optically analyzed, along with appearances of internal micro bubbling, multiple micro explosions and jets, and micro diffusion flames during abrupt heating. Based on temporal variations of the surface area of a micro plastic particle, the apparent burning rate constant is also evaluated and compared with those of well-known volatile liquid fuels.

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Section: Experimental Apparatus and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microscopic Approaches to Decomposition and Burning Processes of a Micro Plastic Resin Particle under Abrupt Heating

Ohiwa

Ishino

Yamamoto

et al. 2008

JTST

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“…The preceding experimental investigations (1)(2)(3)(4)(5)(6)(7)(8)(9) have emphasized the necessity of fundamental investigations, such as high-speed and magnifying tracking of a series of processes of heating, melting, decomposing, gasifying, igniting and burning of micro plastic particles flying through a laminar premixed flame front. The latter can simulate the real situation which plastic particles experience during their passage through the combustion zone in the industrial burner.…”

Section: Introductionmentioning

confidence: 99%

Magnifying and Tracking Observation of Micro PET Particles Passing through a Plane Premixed Flame Front

Ohiwa

Ishino

Tomatsu

et al. 2007

JTST

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In order to observe detailed behavior of micro plastic particles under rapid heating, a fundamental investigation is made by introducing two ingenious devices; one is the construction of a plane laminar premixed burner exhibiting extremely excellent two-dimensionality, the other is the construction of a magnifying particle-tracking system composed of a pair of rotating plane mirrors and a fixed high-speed video camera. Taking account of the flow patterns obtained using a PIV/PTV system, a series of heating processes from melting to burning of micro PET particles passing through a laminar flame sheet is optically observed. It is found that the proposed high-speed and magnifying tracking system can realize a wide straight range of particle tracking up to 50 mm and clarify many interesting facts concerning the ignition and burning processes of micro PET particles.

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An Investigation on Thermal Recycling of Recycled Plastic Resin (Optical Analysis of Abrupt Heating Characteristics of a Micro Plastic-Resin Particle)

Cited by 2 publications

References 0 publications

Microscopic Approaches to Decomposition and Burning Processes of a Micro Plastic Resin Particle under Abrupt Heating

Microscopic Approaches to Decomposition and Burning Processes of a Micro Plastic Resin Particle under Abrupt Heating

Magnifying and Tracking Observation of Micro PET Particles Passing through a Plane Premixed Flame Front

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