6533b827fe1ef96bd1286f54

RESEARCH PRODUCT

Experimental study of the pyrolysis of waste bitumen for oil production

Pasquale IannottaMarco ManiscalcoFranco GrisafiAlberto BrucatoGiuseppe CaputoLaura MistrettaFrancesca Scargiali

subject

Maximum temperatureMaterials scienceSettore ING-IND/25 - Impianti Chimici020209 energyAnalyserAnalytical chemistryBitumen Kinetic parameters Oil Product yields Pyrolysis Syngas Thermo-gravimetric analysis Waste to fuel02 engineering and technologyKinetic energy020401 chemical engineeringAsphaltOil production0202 electrical engineering electronic engineering information engineeringHeat of combustionGas chromatography0204 chemical engineeringPyrolysis

description

Abstract This work focuses on bitumen slow pyrolysis. Mass and energy yields of oil, solid and gas were obtained from pyrolysis experiments using a semi-batch reactor in a nitrogen atmosphere, under three non-isothermal conditions (maximum temperature: 450 °C, 500 °C and 550 °C). The effect of temperature on the product yields was discussed. The gas compositions were analysed using gas chromatography (GC) and the heating value of oil and solid residue was also measured. Using a thermo-gravimetric analyser, kinetic parameters were evaluated through Ozawa-Flynn-Wall (OFW) method. Results showed that oil yield is maximum at 500 °C (50%). Moreover, gas yield increased with increasing pyrolysis temperature from 18% to 36%. On the other hand, solid yield showed an opposite trend: it decreased from 39% to 32%. As regard energy yields, they showed a similar trend with the mass ones. H2, CH4, C2H4, C2H6 and C3H8 are the main components of the produced gas phase. It has been noticed that the recovery of bitumen to liquid oil through pyrolysis process had a great potential since the oil produced had high calorific value comparable with commercial fuels.

yearjournalcountryeditionlanguage
2020-12-01Journal of the Energy Institute
https://doi.org/10.1016/j.joei.2020.08.003