Preliminary study for the suitability of eucalyptus chips and coal for combustion in a fluidized bed reactor
| Autor: | Angenor Geovani Auler, Matheus Vilares Mem de Sá, Paulo Eichler, Jaqueline Lidorio de Mattia, Guilherme Silva, Guilherme de Souza, Fernando Almeida Santos |
|---|---|
| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Pesquisa Florestal Brasileira, Vol 40 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1809-3647 1983-2605 |
| DOI: | 10.4336/2020.pfb.40e201801739 |
| Popis: | The combustion with fluidized bed reactors has as main advantages the best energy utilization of combustible materials and a lower generation of pollutants. The fluidization success depends on the characteristics of the particles that compose the bed. This research aimed to perform a preliminary evaluation and characterization of the energy potential and the fluidization curves in fluidized beds formed by binary mixtures of eucalyptus chips + sand and mineral coal + sand. We tested: 1) physical characterization of solid fuels; 2) chemical characterization of combustible materials; 3) thermogravimetric analysis of fuels; 4) determination of the fluidization curves and minimum fluidization velocity for a polydisperse bed. We observed 19.15 MJ kg-1 of lower calorific value for eucalyptus chips and 10.1 MJ kg-1 for coal. The increase in biomass percentage in mixture caused a pressure drop in bed, indicating the formation of preferred paths and a necessity to increase fluid velocity. The fluidization of coal and Eucalyptus chips can be viable in a bubbling fluid bed process, motivating future theoretical and experimental studies involving the application of this methodology in the development of clean and sustainable technologies. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|