Bio-oils from arid land plants: Flash pyrolysis of Euphorbia characias bagasse
| Autor: | G. Scano, J. Boufala, Leonetto Conti |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
biology
Atmospheric pressure Moisture Renewable Energy Sustainability and the Environment Euphorbia characias Chemistry Biomass chemistry.chemical_element Forestry biology.organism_classification Pulp and paper industry Nitrogen Fluidized bed Botany Bagasse Waste Management and Disposal Agronomy and Crop Science Pyrolysis |
| Zdroj: | Biomass and Bioenergy. 7:291-296 |
| ISSN: | 0961-9534 |
| DOI: | 10.1016/0961-9534(94)00071-z |
| Popis: | The devolatilization of the bagasse obtained by solvent extraction of dried Euphorbia characias , a bushy plant growing in arid land of the Mediterranean area, was investigated under rapid heating conditions at atmospheric pressure using a bench-scale fluidized bed pyrolyser. Particle heating rates exceeded 10 4 °C s −1 . Bagasse was fed continuously at the rate of 6 g h −1 directly into a sand bed fluidized by nitrogen operating in the temperature range of 400°–750°C. The yields of oils, gases and chars are reported. A maximum oil yield of 44% (wt/wt) (moisture free bagasse) was obtained at 500°C. Yields of gases, CO, CO 2 , C 1 –C 4 hydrocarbons increased with the rise in temperature, reaching a maximum at 750°C. Elemental analyses showed that the composition of oils and chars was dependent on pyrolysis temperature. The nitrogen content is fairly high; an upgrading process could be necessary for its remotion before the use of the bio-oil as combustible. The other characteristics of oils fall in the range of oils derived from other biomass feedstocks. Chars have a high HHV (15.36 MJ kg −1 at 500°C), representing a valuable fuel. |
| Databáze: | OpenAIRE |
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