Effect of the impeller speed on the melting of natural rubber scraps in biofuel production via fast pyrolysis
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Abstract
This article aims to study and develop the pyrolysis process for converting rubber waste into biofuel through the design of a continuous liquefaction process. A prototype liquefaction machine was designed and constructed to test optimal conditions, focusing on impeller speeds of 0, 22, and 44 rpm, with a controlled liquefaction temperature of 300°C. Key performance indicators included the melting rate and specific energy consumption. The results indicate that an impeller speed of 44 rpm provided the best liquefaction efficiency, achieving a melting rate of 1.598 ± 0.045 kg/hr and a specific energy consumption of 1269.914 ± 17.510 Wh/kg, translating to a melting cost of 5.59 ± 0.09 THB/hr. The total time required to liquefy the rubber waste was 104 ± 5 minutes. This study concludes that liquefying rubber waste can reduce both the reaction time and heating time in the pyrolysis reactor. The findings can be applied to continuous pyrolysis processes for biofuel production, contributing to the conversion of agricultural waste into alternative bioenergy.
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References
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