|Conventional Process||GDEPL Process|
|Purchasing of waste plastics from rag-pickers or scrap dealer||Purchasing of waste plastics from rag-pickers or scrap dealer|
|Cleaning of dirty plastics with detergent and water||No cleaning only segregation of plastic from non plastic|
|Drying of cleaned plastics in air.||Nil|
|Feeding of dried and cleaned plastics into agglomerator (approx. temperature 90°C).||Feeding of plastic into pyrolysis autoclave by hydraulic pressure with continuous heating to plastic melting temperature.|
|Cutting of big lumps of plastic into smaller pieces with water/air spraying for cooling.||Not Applicable|
|Feeding of smaller pieces into a grinding machine (addition of colour and additives)||Not Applicable|
|Cutting of smaller pieces into tiny pieces in the grinding machine. Feeding of plastic pieces into a mixer machine (approx. temperature 600C-700C).||Not Applicable|
|Heating in mixer until it gives a spongy feeling||Not Applicable|
|Feeding of spongy plastics into a granule extruder machine consists of wire filter plates in order to remove foreign particles.||Not Applicable|
|Forming of thin plastic extruded wires in Granules extruder machine (Temperature: 170-250 deg. C), falling of semi-solid plastic wires||Closing the feeder and heating the plastic to pyrolysis temperature.Useing the gas generated in process for reheating plastic.|
|Thin wires to a cutter and cutting of wire into very small pieces (Granules).||Getting 70 % oil recovery from system|
|Present process needs improvement, because it generates fugitive emissions||Process does not generate any fugitive emissions.
Does not produce any liquid effluent
Solid waste is charcoal which is again reused as fuel.
|Effective segregation of plastic based on its type is a must or it will render the end product with little commercial value||The plastic is just segregated on its specific gravity; any plastic which floats on water is acceptable.|