ABSTRACT

In this study a batch-type fixed-bed fire-tube heating pyrolysis system has been designed and fabricated to produce liquid oil from scrap tires. Waste materials in the form of bicycle/rickshaw and truck scrap tire were pyrolysed in an internally heated batch-type fixed-bed fire-tube heating reactor system. The solid waste tires in pieces form was pyrolyzed in a 10 cm diameter and 27cm height reactor. The feed sizes were 10cmxO.5cmxO.25cm to 25cmx2cmx0.25cm. The reactor was heated by means of uniformly distributed electric coils of total capacity 2800wt and LPG burner preheated the purging N2 gas. The products were oils, char and gas. The liquid and char products were collected separately while the gas was flared into atmosphere. The product liquid was collected in a series of ice-cooled liquid collector. The maximum liquid and char yield were 52% and 35% for bicycle/rickshaw tire and 60% and 23% for truck tire for feed size of 10cmxO.5cmxO.25cm and 10cmx2cmxlcm respectively. The condensed pyrolytic oils were analyzed for their physical properties. The fuel properties compared were physical properties and calorific value. The heat values of the liquids of truck tire and bicycle/rickshaw are 40733 kJ/Kg and 41000 respectively. The results of the analysis showed that the oils were favorable viscosity and high heat value. From this study it is found that the pyrolysis of solid tire wastes may be a potential source of liquid hydrocarbon fuels.

Click Here to download full report.