Journal: | Brazilian journal of chemical engineering |
Database: | PERIÓDICA |
System number: | 000308872 |
ISSN: | 0104-6632 |
Authors: | Pisani-Junior, R1 Moraes-Junior, D2 |
Institutions: | 1Universidade Federal de Sao Carlos, Departamento de Engenharia Quimica, Sao Carlos, Sao Paulo. Brasil 2Universidade Santa Cecilia, Santos, Sao Paulo. Brasil |
Year: | 2003 |
Season: | Jun |
Volumen: | 20 |
Number: | 2 |
Pages: | 95-103 |
Country: | Brasil |
Language: | Inglés |
Document type: | Artículo |
Approach: | Experimental, aplicado |
English abstract | In this work, SO2 was treated by reaction with dolomite limestone (24 µm) in a fluidized bed reactor composed of 500-590 µm sand particles. The influence of operating temperature (500, 600, 700 and 800ºC), superficial gas velocity (0.8, 1.0 and 1.2 m/s) and Ca/S molar ratio (1, 2 and 3) on SO2 removal efficiency for an inlet concentration of 1000 ppm was examined. Removal of the pollutant was found to be dependent on temperature and Ca/S molar ratio, particularly at 700 and 800°C. A maximum removal of 76% was achieved at a velocity of 0.8 m/s, a temperature of 800°C and a Ca/S of 3. The main residence time of the powder particles was determined by integrating normalized gas concentration curves as a function of time; the values found ranged from 4.1 to 14.4 min. It was concluded that the reactor operated in bubbling fluidization under every operational condition |
Disciplines: | Química |
Keyword: | Ingeniería química, Reactor de lecho fluidizado, Dióxido de azufre, Remoción quimica, Dolomita, Fluidización de burbujas, Reacciones gas-sólido |
Keyword: | Chemistry, Chemical engineering, Fluidized bed reactor, Sulfur dioxide, Chemical removal, Dolomite, Bubbling fluidization, Gas-solid reactions |
Full text: | Texto completo (Ver HTML) |