O. Mete Kockar

Slow, fast and flash pyrolysis of rapeseed

Pyrolysis experiments have been conducted on a sample of rapeseed to determine particularly the effects of pyrolysis temperature, heating rate, particle size and sweep gas flow rate on the pyrolysis product yields and their chemical compositions. The maximum oil yield of 73% was obtained at the final pyrolysis temperature of 550–600 °C, particle size range of +0.6–1.25 mm, and sweep gas flow rate of 100 cm3min−1 (N2) at flash pyrolysis conditions in tubular transport reactor. Chromatographic and spectroscopic studies on the pyrolytic oil showed that the oil obtained from rapeseed can be used as a renewable fuel and chemical feedstock.

Fixed-bed pyrolysis of rapeseed (Brassica napus L.)

Abstract Fixed-bed slow and fast pyrolysis experiments have been conducted on a sample of rapeseed. The experiments were performed in two different pyrolysis reactors, namely a fixed-bed Heinze and a well-swept fixed-bed tubular retort to investigate the effects of heating rate, pyrolysis temperature, particle size, sweep gas velocity on the pyrolysis product yields and chemical compositions. The maximum oil yield of 51.7% was obtained in the Heinze reactor 550°C, with a particle size range of +0.6– 1.8 mm (sweep gas 100 cm 3 min −1 N 2 ) at a heating rate of 30° C min −1 . In the well-swept fixed-bed reactor, the maximum oil yield of 68% was obtained at a heating rate of 300° C min −1 . Chromatographic and spectroscopic studies on the pyrolytic oil showed that the oil obtained from rapeseed could be use as a renewable fuels and chemical feedstock.

Oil production from an arid-land plant: fixed-bed pyrolysis and hydropyrolysis of Euphorbia rigida

Abstract Fixed-bed pyrolysis and hydropyrolysis experiments at different temperature, heating rates and pressures have been conducted on a sample of Euphorbia rigida to investigate the product yields and characteristics. In hydrogen at 15 MPa and 550°C, the trends in yield and product composition markedly differ from those found previously for coals and oil shales, also the oil yield of 41.5 wt% is more than double that obtained from static retorting. This increase by using high hydrogen pressure is much greater when expressed on a carbon basis, due to the reduced oxygen contents of the oils, and the carbon conversion is increased by ∼25% relative to static retorting.

Pyrolysis of Walnut Shell in a Well-Swept Fixed-Bed Reactor

Fixed-bed fast pyrolysis experiments have been conducted on a sample of walnut shell to particularly determine the effects of pyrolysis temperature, heating rate, particle size, and sweep gas flow rate on the pyrolysis product yields and their chemical compositions. The maximum oil yield of 31.2% was obtained at the final pyrolysis temperature of 500°C, particle size range of +0.6–1.8 mm, with heating rate of 300°C min−1 and sweep gas flow rate of 100 cm3 min−1 (N2) in a well-swept fixed-bed reactor. Chromatographic and spectroscopic studies on the pyrolytic oil showed that the oil obtained from walnut shell can be used as a renewable fuel and chemical feedstock.

Pyrolysis of Euphorbia Rigida from Central Anatolia

In this study, Euphorbia rigida, which grows in large quantities in and lands like many regions in central Anatolia, was considered as a candidate for potential renewable energy source.