The effect of pyrolysis atmosphere on bio-oil yields and structure |
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Authors: | Eylem Önal Ayşe Eren Pütün |
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Affiliation: | 1. Faculty of Engineering, Chemical and Process Engineering, Bilecik Seyh Edebali University, Bilecik, Turkey;2. Department of Chemical Engineering, Anadolu University, Iki Eylul Campus, Eskisehir, Turkey |
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Abstract: | A food industry waste, almond shell, was pyrolyzed under three different environment static, nitrogen, and steam to produce bio-oil and its derivatives. The oil yield obtained at pyrolysis temperature of 600°C was 24.23% in a static atmosphere, whereas it increased to 27.25% and 33.05% in nitrogen and steam atmospheres, respectively. The bio-oil obtained under steam atmosphere is very efficient due to the production of high liquid and gas yields. Moreover, co-feeding steam during the pyrolysis altered the bio-oil structure by increasing the aliphatics and reducing the asphaltenes. Moreover, steam treatment also increases H/C and heating value of bio-oils. According to the obtained results, steam pyrolysis is an alternative option for future applications in refineries. |
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Keywords: | Almond shell pyrolysis bio-oil production steam pyrolysis |
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