Abstract
In the present study, pyrolysis of pine needles has been conducted in a semi-batch reactor at different operating parameters such as particle size, temperature and flow rate of nitrogen for bio-oil production. The maximum bio-oil yield of 43.5% was obtained at a temperature of 550 °C, N2 flow rate of 100 ml/min and particle size of 462μ. At the above optimum conditions, catalytic pyrolysis was observed that bio-oil yield decreased up to 35.2%. The analysis of bio-oil by using gas chromatography-mass spectrometry (GC-MS) shows that zeolite HZSM-5 catalyst increases the production of aromatic hydrocarbon compounds and reduces the oxygenated compounds as compared to non-catalytic pyrolysis bio-oil. From the analysis, it has been confirmed that catalytic bio-oil produces more diesel and gasoline range compounds in comparison to non-catalytic bio-oil. In pyrolysis, products such as 2, 5 dimethyl furan compounds have been found that can be easily used as gasoline range compounds as well as rocket engine fuel.
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