| Journal: | Brazilian journal of chemical engineering |
| Database: | PERIÓDICA |
| System number: | 000309034 |
| ISSN: | 0104-6632 |
| Authors: | Birchal, V.S1 Passos, M.L2 |
| Institutions: | 1Universidade Federal de Minas Gerais, Programa de Pos-Graduacao em Engenharia Mecanica, Belo Horizonte, Minas Gerais. Brasil 2Universidade Federal de Sao Carlos, Centro de Secagem, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2005 |
| Season: | Jun |
| Volumen: | 22 |
| Number: | 2 |
| Pages: | 293-302 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | This work aims at modeling and simulating the drying of whole milk emulsion in spray dryers. Drops and particles make up the discrete phase and are distributed into temporal compartments following their residence time in the dryer. Air is the continuous and well-mixed phase. Mass and energy balances are developed for each phase, taking into account their interactions. Constitutive equations for describing the drop swelling and drying mechanisms as well as the heat and mass transfer between particles and hot air are proposed and analyzed. A set of algebraic-differential equations is obtained and solved by specific numerical codes. Results from experiments carried out in a pilot spray dryer are used to validate the model developed and the numerical algorithm. Comparing the simulated and experimental data, it is shown that the model predicts well the individual drop-particle history inside the dryer as well as the overall outlet air-particle temperature and humidity |
| Disciplines: | Química |
| Keyword: | Química de alimentos, Ingeniería química, Emulsión láctea, Secado por aspersión, Distribución de partículas, Simulación numérica |
| Keyword: | Chemistry, Food chemistry, Chemical engineering, Milk emulsion, Spray drying, Particle distribution, Numerical simulation |
| Full text: | Texto completo (Ver HTML) |
